Zinc Countertops: Pros and Cons
A zinc countertop is hip, trendy, and very cool. But is it worth the price?
Image: Mio Metals/Copperworks
Zinc is an industrial-looking countertop material that's got unique characteristics. Primarily, zinc develops a patina with age that some home owners really like.
Zinc reacts with water, fingerprints, lemon juice, and all sorts of other things that land on a kitchen counter. Eventually, the marks blend together and leave the countertop with a beautiful, dark blue-gray patina. But that can take a year — a long time if you cringe at seeing a spot.
Zinc is also bound to disappoint if you try to keep a shiny new look by polishing the countertop frequently. It's possible, but why do so much work? You'd be better off with stainless steel, since it stays shiny with no special effort.
What's Likeable About Zinc?
1. Zinc is a less-pristine alternative to stainless steel because it's a "living metal" that changes color over time in reaction to its surroundings.
2. It's naturally non-porous, so you can clean it with just soap and water.
3. It has anti-bacterial properties similar to copper, making it a great surface for prepping food.
4. The metal is easy to work with, so it's easy to include decorative edges in various shapes and styles. Fabricators also can create an integral zinc sink by welding parts together and grinding seams smooth, making cleanup a breeze.
What's Not to Like?
1. Zinc is soft, so it scratches easily if you cut directly on it. Be sure to have cutting boards handy.
2. It can warp if someone sets down a pot hotter than about 300 degrees (set down a red-hot iron pot and the zinc could melt). Be sure to tell guests not to set hot items on your zinc countertop! Keep trivets nearby.
3. Price is an eye-opener. A zinc countertop costs $150 to $200 per sq. ft., depending on the thickness of the metal (you'll want 15-gauge material that's at least.060 thick). Stainless steel costs less, and granite is even cheaper.
Other Cost Considerations
1. Zinc is an expensive material that's not for everybody. Make sure your decision to install a zinc countertop is in line with the style and features of other homes in your neighborhood. Less-expensive options may have a better return on your investment.
2. You'll pay an additional 10% to 15% installation charge for unusual or complex countertop shapes.
3. Be sure to get several bids before committing to a zinc countertop. Ask if your countertop fabricator has had experience making zinc countertops, and ask to see examples of their work. Try getting bids from sheet metal fabricators, not just companies that specialize in installing countertops.
4. Some zinc sheets are "seconds" — meaning they already have stains and discolorations. If that kind of patina isn't objectionable, you can save 10% to 20% on your countertop by opting for seconds.


Летние мастер-классы в Исландии
Летние мастер-классы в Исландии
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When is summer in Iceland?
The summer months in Iceland occur between May and August. This is the high season, during which the most people travel to Iceland for landscape photography tours.
What is the Midnight Sun?
 Find out why Iceland is the perfect place for Midnight Sun photography.The Midnight Sun is a natural phenomenon that occurs during the summer months, from around June to July. During this period, there is daylight even at midnight, with the sun being visible for almost 24 hours. Find out why Iceland is the perfect place for Midnight Sun photography.
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What is the weather like for photography during summer in Iceland?
The weather in Iceland can be very fickle. One second, it may be sunny and then raining the next. Conditions are generally mild, though it can get windy at times. Find out the best time to visit Iceland for photography.
What is there to photograph during summer in Iceland?
Summer is when the magnificent landscapes in Iceland come alive with blooming wildflowers and lush green moss. The glacial rivers are at full flow and you'll be able to see a variety of wildlife, including puffins, Arctic foxes, whales and seals. Not to mention countless Icelandic horses and sheep wandering through the fields! We've put together a wildlife photography guide to help you take great pictures of the animals in Iceland.


Ronin - Meaning of Ronin, What does Ronin mean?
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Ronin - Meaning of Ronin
What does Ronin mean?
Meaning of the name Ronin
[ 2 syll. ro-nin, ron-in ] The baby boy name Ronin is pronounced as ROWNihN †. Ronin is used mostly in Hebrew and English, and its language of origin is Hebrew and Celtic.
Ronin is a derivative (Hebrew) of the English, Spanish, Dutch, and Hebrew name Ron.
Ronin is also a derivative (English) of the English and Irish name Ronan.
Ronin is somewhat popular as a baby name for boys. The name has been rising in popularity since the 2000s; prior to that, it was of infrequent use only. At the modest peak of its usage in 2012, 0.015% of baby boys were named Ronin. Its ranking then was #771. In 2012, out of the group of boy names directly related to Ronin, Ronan was the most commonly used. The name was twice as popular as Ronin in that year.
Baby names that sound like Ronin include Ronan (English and Irish), Raam (Hebrew), Racham (Hebrew), Raemonn, Rahaeim, Raham (English and Hebrew), Rahan, Rahane, Raheem (Arabic and English), Rahiem, Rahim (Arabic, English, and Iranian), Rahma, Rahmahn, Rahman (Arabic and Turkish), Rahmen, Rahmin, Rahym, Raimee, Raimey, and Raimi.
Ronin Baby Name Explorer
Meaning of Ronin Meaning of Ron Meaning of Ronny Meaning of Ronnie Meaning of Roni Meaning of Ron Meaning of Ronny Meaning of Veronica Meaning of Ronnie Meaning of Aaron Meaning of Ronald Meaning of Rowena Meaning of Rhonda Meaning of Cameron Meaning of Byron Meaning of Jaron Meaning of Myron Meaning of Ronan Meaning of Lerone Meaning of Taron
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Ronin - Meaning of Ronin, What does Ronin mean?


In'swine production' (pig farming), the verb 'Farrow' means to give birth to pigs. Needless to say, farrowing is something that only sows do.
The noun farrow means 'a litter of piglets'.
This is an interesting contrast when compared to its definition in regards to cattle farming, where it means a cow is 'not in calf', that is, not pregnant.


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Poy Sang Long
The Poy Sang Long (Shan: ပွႆးသၢင်ႇလွင်း; lit. "Festival [of the] Crystal Sons") is a rite of passage ceremony among the Shan peoples, in Myanmar (also known as Burma) and in neighbouring Northern Thailand, undergone by boys at some point between seven and fourteen years of age. It consists of taking novice monastic vows and participating in monastery life for a period of time that can vary from a week to many months or more. Usually, a large group of boys are ordained as novice monks at the same time.
It can also be observed in neighbouring Thailand, where Shan immigrants have brought over the traditions from Myanmar. The ceremony goes on for three days, as the boys (dressed up like princes in imitation of the Lord Buddha, who was himself a prince before setting out on the religious path) spend the entire time being carried around on the shoulders of their older male relatives. On the third day, they are ordained, and enter the monastery for a period of at least one week, and perhaps many years.
See also
- "The Poy Sang Long Festival" in Chiangrai Magazine
- "The Poy Sang Long Festival" by Thanapol Chadchaidee
- Poi Sang Long Festival in Chiang Dao
- Shan Tradition Rules in a Northern Thai Town Sai Silp, The Irrawaddy, April 2007
- "Shan - Rites of Passage - Sang Long" in Chiang Mai
|This Burma-related article is a stub. You can help Wikipedia by expanding it.|
|This culture-related article is a stub. You can help Wikipedia by expanding it.|

source: HuggingFaceFW/fineweb-edu


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Psi-calculi revisited: Connectivity and compositionality
Johannes Åman Pohjola
UNSW Sydney
Best paper award.
Psi-calculi is a parametric framework for process calculi similar to popular pi-calculus extensions such as the explicit fusion calculus, the applied pi-calculus and the spi calculus. Mechanised proofs of standard algebraic and congruence properties of bisimilarity apply to all calculi within the framework. A limitation of psi-calculi is that communication channels must be symmetric and transitive. In this paper, we give a new operational semantics to psi-calculi that allows us to lift these restrictions and simplify some of the proofs. The key technical innovation is to annotate transitions with a provenance - a description of the scope and channel they originate from. We give mechanised proofs that our extension is conservative, and that the standard algebraic and congruence properties of bisimilarity are maintained. We show correspondence with a reduction semantics and barbed bisimulation. We show how a pi-calculus with preorders that was previously beyond the scope of psi-calculi can be captured, and how to encode mixed choice under very strong quality criteria.
BibTeX Entry
 author = {{\AA}man Pohjola, Johannes},
 doi = {\_1},
 month = jun,
 year = {2019},
 keywords = {Process algebra; Psi-calculi; Nominal logic; Interactive theorem proving; Bisimulation},
 title = {Psi-Calculi Revisited: Connectivity and Compositionality},
 address = {Lyngby, Denmark},
 pages = {3-20},
 volume = {11535},
 booktitle = {FORTE 2019: International Conference on Formal Techniques for Distributed Systems},
 paperurl = {},
 publisher = {Springer},
 isbn = {9783030217587}


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Quick Start Guide
- vMAP overview
- Manage users and rights
- View your data on vMAP
- Analyse your data
- Style your map
- Print and share your map
- vMAP Glossary
- Admin Center Guide
Split a polygon
To split two polygons, follow these steps:
Step 1. Select a polygon on the mapview by clicking on the polygon. To open the Split Polygon window, select from the icon in toolbar on the mapview.
Step 2. The polygon Name and Target layer will be displayed in the Split Polygon window. Choose a target layer where the split two layers will be saved later.
Step 3. To draw a line across the selected polygon for splitting, click the Create Line button. Hold down the [Shift] key while moving the cursor, click on the map to mark the start point and double-click to mark the end point, forming a line.
To reset the Split Polygon window and select another polygon, click the Select Another Polygon button.
Step 4. To save the splitting operation, click the button to proceed.
Step 5. Set the Name and Description of the two new split polygons. Also set the field values if needed (see the screenshot below). vMAP offers two approaches to set the field values:
Approach 1: Set the field value by batch processing.
Approach 2: Set the field value one by one manually.
Approach 1: Set the field values by batch processing
Follow these steps to batch process values of split polygons:
Step 1. To copy the value of each field from the original polygon to the corresponding values of the two split polygons, click the Copy button.
Step 2. To split the value of each field from the original polygon to the two split polygons evenly, click the Average button.
Step 3. To reset the value of each field of the two split polygons, click the Clearbutton.
Step 4. To save the split polygons, click the button. Then you can locate these two split polygons on the target layers.
Approach 2 :Set the field values one by one manually
Approach 2 is different from Approach 1 in that you can set the field values one by onem and they will not be affected by the original polygon's values. The icons have the same functionalities as Approach 1.
When getting back to vMAP center map panel and selecting the polygon, you will find it will be three polygons now: the original polygon, two split polygons in target layer.

source: openbmb/Ultra-FineWeb


Quick Answer: What Is Short For Gregory?
What does the name Ryan mean?
Ryan is an English-language given name of Irish origin, and is used by both males and females.
It comes from the Irish surname Ryan, which in turn comes from the Old Irish name Rian.
Popular modern sources typically suggest that the name means "little king" or "illustrious", but the original meaning is unknown..
What does Gregory mean in the Bible?
The name Gregory comes from the Greek Gregōrios, derived from the verb "gregōrien" meaning 'watchful, vigilant'. … The name was adopted by early Christians heedful of the Biblical passage located in 1 Peter 5:8, "Be sober-minded; be watchful.
Who is Gregory in Romeo and Juliet?
Gregory is a minor character in the play. He is of the house of Capulet, and a friend to Sampson. Gregory confronts Sampson about the fact that he complains, yet does not act on the fact that he hates all Montagues.
What does the name Kimberly mean?
The given name Kimberley is derived from place of Kimberley, in Northern Cape, South Africa. … This place name is derived from two Old English elements: the first is the feminine personal name Cyneburg, which means "royal fortress"; the second element is lēah, which means "woodland" or "clearing".
What is Greg a nickname for?
Greg is a name that's been used primarily by parents who are considering baby names for boys. Short form of Gregory. Greg Kinnear, actor.
What nationality is Gregory?
Gregory (surname)OriginWord/nameGreek, Latin, Celtic, RussianMeaningSon of "Gregory" or "Gregor"Region of originEngland (Derbyshire), Scotland (Highlands)Other names1 more row
What is the female version of the name Gregory?
I found several female versions of Gregory, actually: Gregoria (this name has already been mentioned – it's the most popular one, I think) Gregorina. Gregorine.
Who is Gregory FNAF?
Gregory is the implied child protagonist of the upcoming game Five Nights at Freddy's: Security Breach.
Is Greg a male or female name?
Gender Popularity of the Name "Greg" Boy or Girl? Greg: It's a boy! Since 1880, a total of 75,845 boys have been given the name Greg while we have no record of any girls being named Greg.
Is Gregory a unisex name?
The name Gregory is a boy's name of Greek origin meaning "vigilant, a watchman".
What kind of name is Greer?
Meaning: Greer is a girl's name of Scottish origin that means "alert or watchful.
How do you spell the name Greg?
The surname is of Scottish origin and is derived from a shortened form of the personal name Gregory and Greg. As a given name, Greig is of English and Scottish origin. This name is a short form of the names Gregory or Gregor. In some cases it is derived from the surname of the same spelling.
What does the name Gregory stand for?
The masculine first name Gregory derives from the Latin name "Gregorius", which came from the late Greek name "Γρηγόριος" (Grēgórios) meaning "watchful, alert" (derived from Greek "γρηγoρεῖν" "grēgorein" meaning "to watch").
What does the name Gregory mean in Hebrew?
Gregory is a common masculine first name and family name. It is derived from the Latin "Gregorius," which was from the late Greek name "Γρηγόριος" (Gregorios), which was derived from "γήγορος" (gegoros) meaning "watchful, alert". … Because of this background, it is also a very common name for saints.
What name means a gift from God?
Is Gregory a Russian name?
Grischa (alternatively spelled Grisha or Gricha) is a short form for the name Gregory or Grigorij, and sometimes for the name Georgi as well, used in Russia and some other Slavic countries, including Ukraine and Bulgaria. The "sha" ending is a typical short form in the Russian language for names.


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The post about Wooden Paddle With Holes was uploaded on November 1, 2017 at 5:59 am. It is published at the Wooden category. Wooden Paddle With Holes is tagged with Wooden Paddle With Holes, Wooden, Paddle, With, Holes..
Woodenwood•en (wŏŏd′n),USA pronunciation adj.
- consisting or made of wood;
wood: a wooden ship.
- stiff, ungainly, or awkward: a wooden gait.
- without spirit, animation, or awareness.
- dull or stupid.
- indicating the fifth event of a series, as a wedding anniversary.
Paddlepad•dle1 (pad′l),USA pronunciation n., v., -dled, -dling.
- a short, flat bladed oar for propelling and steering a canoe or small boat, usually held by both hands and moved more or less through a vertical arc.
- any of various similar implements used for mixing, stirring, or beating.
- any of various similar but smaller implements with a short handle for holding in one hand and a wide or rounded blade, used for a racket in table tennis, paddle tennis, etc.
- such an implement or a similarly shaped makeshift one, used to spank or beat someone.
- an implement used for beating garments while washing them in running water, as in a stream.
- Also called float, floatboard. a blade of a paddle wheel.
- See paddle wheel.
- any of the blades by which a water wheel is turned.
- a flipper or limb of a penguin, turtle, whale, etc.
- an act of paddling.
- Also, pattle. Brit. Dial. a small spade with a long handle, used to dig up thistles.
- (in a gate of a lock or sluice) a panel that slides to permit the passage of water.
- to propel or travel in a canoe or the like by using a paddle.
- to row lightly or gently with oars.
- to move by means of paddle wheels, as a steamer.
- to propel with a paddle: to paddle a canoe.
- to spank or beat with or as with a paddle.
- to stir, mix, or beat with or as with a paddle
- to convey by paddling, as a canoe.
- to hit (a table-tennis ball or the like) with a paddle.
- paddle one's own canoe. See canoe (def. 3).
Withwith (with, wiᵺ),USA pronunciation prep.
- accompanied by;
accompanying: I will go with you. He fought with his brother against the enemy.
- in some particular relation to (esp. implying interaction, company, association, conjunction, or connection): I dealt with the problem. She agreed with me.
- characterized by or having: a person with initiative.
- (of means or instrument) by the use of;
using: to line a coat with silk; to cut with a knife.
- (of manner) using or showing: to work with diligence.
- in correspondence, comparison, or proportion to: Their power increased with their number. How does their plan compare with ours?
- in regard to: to be pleased with a gift.
- (of cause) owing to: to die with pneumonia; to pale with fear.
- in the region, sphere, or view of: It is day with us while it is night with the Chinese.
- (of separation) from: to part with a thing.
- against, as in opposition or competition: He fought with his brother over the inheritance.
- in the keeping or service of: to leave something with a friend.
- in affecting the judgment, estimation, or consideration of: Her argument carried a lot of weight with the trustees.
- at the same time as or immediately after;
upon: And with that last remark, she turned and left.
- of the same opinion or conviction as: Are you with me or against me?
- in proximity to or in the same household as: He lives with his parents.
- (used as a function word to specify an additional circumstance or condition): We climbed the hill, with Jeff following behind.
- in with. See in (def. 22).
- with child, pregnant.
- with it:
- knowledgeable about, sympathetic to, or partaking of the most up-to-date trends, fashions, art, etc.
- representing or characterized by the most up-to-date trends, fashions, art, etc.
- with that. See that (def. 10).
Holeshole (hōl),USA pronunciation n., v., holed, hol•ing.
- an opening through something;
aperture: a hole in the roof; a hole in my sock.
- a hollow place in a solid body or mass;
a cavity: a hole in the ground.
- the excavated habitation of an animal;
- a small, dingy, or shabby place: I couldn't live in a hole like that.
- a place of solitary confinement;
- an embarrassing position or predicament: to find oneself in a hole.
- a cove or small harbor.
- a fault or flaw: They found serious holes in his reasoning.
- a deep, still place in a stream: a swimming hole.
- a small cavity, into which a marble, ball, or the like is to be played.
- a score made by so playing.
- the circular opening in a green into which the ball is to be played.
- a part of a golf course from a tee to the hole corresponding to it, including fairway, rough, and hazards.
- the number of strokes taken to hit the ball from a tee into the hole corresponding to it.
slot: The radio program was scheduled for the p.m. hole. We need an experienced person to fill a hole in our accounting department.
- (in wire drawing) one reduction of a section.
- a mobile vacancy in the electronic structure of a semiconductor that acts as a positive charge carrier and has equivalent mass.
- an air pocket that causes a plane or other aircraft to drop suddenly.
- burn a hole in one's pocket, to urge one to spend money quickly: His inheritance was burning a hole in his pocket.
- hole in the wall, a small or confining place, esp. one that is dingy, shabby, or out-of-the-way: Their first shop was a real hole in the wall.
- in a or the hole:
- in debt;
in straitened circumstances: After Christmas I am always in the hole for at least a month.
- [Baseball, Softball.]pitching or batting with the count of balls or balls and strikes to one's disadvantage, esp. batting with a count of two strikes and one ball or none.
- [Stud Poker.]being the card or one of the cards dealt face down in the first round: a king in the hole.
- make a hole in, to take a large part of: A large bill from the dentist made a hole in her savings.
- pick a hole or holes in, to find a fault or flaw in: As soon as I presented my argument, he began to pick holes in it.
- to make a hole or holes in.
- to put or drive into a hole.
- [Golf.]to hit the ball into (a hole).
- to bore (a tunnel, passage, etc.).
- to make a hole or holes.
- hole out, [Golf.]to strike the ball into a hole: He holed out in five, one over par.
- hole up:
- to go into a hole;
retire for the winter, as a hibernating animal.
- to hide, as from pursuers, the police, etc.: The police think the bank robbers are holed up in Chicago.
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- Choose a seat in line with the budget / wants of the firm.
- Choose a couch that has a comfortable foam or gentle when you sit back.
- Change the color of the seat along with shade and your preference of your furniture.
- Select A certain brand office chairs, office chairs usually have both thighs of the chair, hydraulic, a guarantee of 24 months, as well as the forearms of the chair through the agreed.


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HyperCube™ (Hyperspectral CubeSat Mission - 3D Wind Measurement)
Accurate wind measurement information has been identified as a top priority to improving weather forecasting models. Harris provides HyperCube, a cost-effective solution. HyperCube is a spaceborne three-dimensional sounding instrument designed to measure the speed, direction, and elevation of wind in Earth's atmosphere. A Fourier Transform Spectrometer, the HyperCube 6U CubeSat is much smaller and less expensive than conventional systems, and offers a more expedient implementation alternative to complex LiDAR wind measurement programs. 1)
Enabled by the sounding technology of Harris, HyperCube provides hundreds of hyperspectral bands for the best instrument resolution in the small satellite market. It delivers more vertical layers of wind vector data at fine spatial resolution, resulting in more accurate data than other available solutions.
Data accuracy is maintained using an onboard calibration target capable of precise, absolute calibration. HyperCube™ also offers collection time flexibility, allowing for more mission coverage than alternative technologies.
The design of HyperCube improves upon the highly successful CrIS (Cross-track Infrared Sounder) aboard the Suomi NPP satellite. The CrIS, also a Fourier transform spectrometer, has been providing more accurate atmospheric temperature, pressure, and moisture observations since 2011. Harris packages this proven technology in a smaller, lower mass solution, called the HyperCube CubeSat.
The smallsats are developed in connection with the SDL/USU (Space Dynamics Lab of Utah State University), who provides the spacecraft for the HyperCube mission.
The HyperCube mission and operational concept: 2)
HyperCube is a constellation of 6U CubeSats equipped with MWIR (Mid-Wave Infrared) hyperspectral instruments. The instruments measure three-dimensional (3D) distributions of atmospheric water vapor, and by measuring the same region of the atmosphere at different times, they are able to infer wind velocities at multiple vertical locations in the atmosphere (i.e., 3D wind measurements).
An operational CubeSat constellation would consist of 12 satellites, grouped into four "triplets" of satellites that have identical ground tracks but separated by about 15 minutes. The swath width allows for full global 3D wind measurements every 6 hours. This allows frequent wind data ingestion into numerical weather forecast models.
The HyperCube satellite consists of two major sections; the instrument section and the spacecraft section. The instrument contains an FTS (Fourier Transform Spectrometer)-based hyperspectral sounder, and its design utilizes heritage components from prior Harris hyperspectral instruments. The instrument includes an FTS interferometer, a cross-track step-stare scanner, a compact aft-optics telescope, a two-dimensional (2D) infrared FPA (Focal Plane Array), and an internal calibration target.
The step-stare scanner performs cross-track step-stares, each with a fixed stare time. Earth radiance passes through the scanner and feeds a corner-cube Michelson interferometer. The interferometer performs an OPD (Optical Path Difference) sweep and creates a double-sided interferogram in each sweep. Simple focusing optics behind the interferometer place the optical beam onto a 2D FPA. The FPA is cooled to cryogenic temperatures using a two-stage passive cooler, similar to the cooler used by the Harris HIRS (High-resolution Infrared Radiation Sounder) instrument, with some new, innovative advancements to fit in the compact CubeSat geometry.
The mass of the full satellite is 12.2 kg, while the overall volume is 11.6 x 24 x 36.6 cm (6U). The instrument section requires 11 W of the total 21 W power distribution.
Figure 1: Observation concept of the future HyperCube constellation (image credit: Harris)
HyperCube flight demonstration mission:
Harris is developing a flight demonstration version of a HyperCube satellite that could be flown as early as 2019. During the flight demonstration, HyperCube will collect different types of data to demonstrate different types of missions. MWIR spectra, with high spatial and spectral resolution, will be collected providing moisture profiles at various altitudes in the atmosphere. Retrievals will be compared with those of CrIS (Cross-track Infrared Sounder) on Suomi NPP, AIRS (Atmospheric Infrared Sounder) on Aqua, and IASI (Infrared Atmospheric Sounding Interferometer) flown on MetOp. On subsequent passes of the CubeSat over the polar regions, polar winds are extracted from two 3D moisture data cubes. Simultaneous nadir overpasses with CrIS and IASI are used to demonstrate calibration accuracy. An alternate collection method will allow trace atmospheric gases to be detected.
Figure 2: HyperCube flight demonstration satellite design (right view), image credit: Harris
Figure 3: HyperCube flight demonstration satellite design (left view), image credit: Harris
Flight demonstration instrument details: Photographs of the key HyperCube instrument components are shown in Figures 4 and 5. Figure 3 shows the main optomechanical portion of the instrument, which includes the cross-track step-stare scanner, internal calibration target, cornercube interferometer, and aft optics. Figure 5 shows the FPA used in the flight demonstration. It is a 6 x 6 MWIR FPA with a 9.5 µm cutoff.
Figure 4: Main optomechanical portion of the HyperCube instrument (image credit: Harris)
Figure 5: FPA used in the HyperCube instrument (image credit: Harris)
Instrument environmental test program: Near-term goals of the flight demonstration program were to demonstrate the maturity of the HyperCube instrument technology and confirm that it is ready for launch. These have now been achieved.
The HyperCube instrument has undergone a complete space environmental test program. This included an initial TVAC (Thermal-Vacuum) test to establish baseline instrument performance and show vacuum operation, a vibration test to prove that the instrument was capable of surviving typical launch conditions, and a post-vibration TVAC to verify that the instrument was functional after vibration and that its performance had not been degraded by the vibration exposure. Figure 5 shows the instrument in TVAC. The instrument is shown attached to a fixture that serves both as the cooler for the detectors and as the vibration test fixture. No significant issues were observed during the vibration test. Figure 7 is a photograph of the instrument while in vibration test.
Figure 6: HyperCube instrument during TVAC testing (image credit: Harris)
Figure 7: HyperCube instrument during vibration testing (image credit: Harris)
The noise equivalent spectral radiance (NEdN) performance of the HyperCube instrument was recorded in TVAC before and after vibration testing. Data collected during TVAC were consistent with NEdN simulations, and no changes were noted due to environmental exposure.
Since the HyperCube instrument has now been successfully exposed to a relevant space environment, it is now considered to be at TRL6 (Technology Readiness Level 6). Harris is currently in the process of completing the build of the remainder of the HyperCube satellite, with the goal of having it ready for launch in 2019.
1) "HyperCubeTM3D Wind Measurement," Harris Corporation, 2017, URL: _URL_
2) Ronald Glumb, Michael Lapsley, Peter Mantica, Anna Glumb, "TRL6 Testing of Hyperspectral Fourier Transform Spectrometer Instrument for CubeSat Applications," Proceedings of the 31st Annual AIAA/USU Conference on Small Satellites, Logan UT, USA, Aug. 5-10, 2017, paper: SSC17-VI-08,URL: _URL_
The information compiled and edited in this article was provided by Herbert J. Kramer from his documentation of: "Observation of the Earth and Its Environment: Survey of Missions and Sensors" (Springer Verlag) as well as many other sources after the publication of the 4th edition in 2002. - Comments and corrections to this article are always welcome for further updates (_EMAIL_).


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Online Lindy Hop Dance Lesson Pack: Texas Tommy: Beginner To Masters (4 lessons)
Title: Texas Tommy: Beginner to Masters
The Texas Tommy is a figure that many people learn early on in their dancing, and remains an important piece of their repertoire throughout their development. This lesson pack explores the wide range of options this versatile figure has to offer, from the simple to the very complex.
Dance genre: Lindy Hop


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GOLDEN SEALóGive a description of golden seal?
Golden seal grows to about a foot in height and has a hairy, purplish stem, branching out at the top. There are only two branches and usually only two leaves, one on each branch. One leaf is larger than the other and they are both of irregular outline, deeply notched and with from three to nine lobes. The flower and fruit grow on the stem holding the smaller leaf. The fruit when ripe resembles a red raspberry. The plant has a thick yellow rootstock with a mass of small branching roots.
Harding, A.R.. 3001 Questions and Answers. Columbus, Oh: A.R. Harding, 1913.
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When you're talking about a topping for bagels and cream cheese, lox is the name most tossed around — it just sounds natural to order a bagel with lox and cream cheese. But is lox really just smoked salmon? Here's a guide to what lox really is, as well as a primer on how different types of smoked salmon are made.
Lox was traditionally only made from the belly of salmon, although other parts of the fish are now also used. The salmon is salt-cured or brined but never cooked or smoked, so it has a very silky, rich texture and translucency. Lox is the traditional topping of bagels with cream cheese and is most often served thinly sliced.
- Get a recipe: How To Salt Cure Salmon (Lox) at Home
There are two other versions of lox where the preparation methods do vary a bit:
- Nova Lox: This lox, which comes from Nova Scotia, is actually cold-smoked after the curing or brining process.
- Gravlax: Gravlax is the Scandinavian preparation of lox, where lots of fresh dill and spices such as juniper berries and pepper, as well as some liquor such as aquavit or brandy, are additional ingredients used during the curing process.
- Get a recipe: Gravlax
Smoked salmon is a much more generic term than lox. Smoked salmon can be made from any part of the fish, and it starts with salt curing or brining, just as in lox.
The next step is where smoked salmon is different from lox. The salmon can be covered in spices or a dry rub after curing, then smoked in one of two ways:
- Cold-Smoked Salmon: The salmon is slowly exposed to smoke in about an 80°F environment for a few days. The salmon doesn't get cooked, so the flesh of cold-smoked salmon stays very moist and silky and has a beautiful translucent pink color. Cold-smoked salmon has a similar texture to lox, but has an additional layer of smoky flavor. It is also a common topping for bagels and cream cheese and is usually sold thinly sliced.
- Hot-Smoked Salmon: The salmon is smoked with heat in the same way meat gets smoked. The fish gets cooked all the way through and ends up with a firm, flaky, and drier texture, but it also has a distinct smoky flavor. When shopping for hot-smoked salmon, it looks very similar to a piece of cooked or grilled salmon.
- Get a recipe: How To Make Hot-Smoked Salmon
Updated from a post originally published in March 2011.


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The Influence of Low Melt Point, High Modulus Fibers in Blended Fiber Ballistic Resistant Nonwovens
Type of DegreeThesis
Polymer and Fiber Engineering
MetadataShow full item record
The purpose of this research was to examine the presence of a thermal phase change as a means of energy dissipation in nonwoven needlepunched felts used in soft body armor applications. The investigation was carried out using Differential Scanning Calorimetry, Polarized Light Microscopy and standardized V50 ballistic testing. A mathematical formula was developed to approximate the residual kinetic energy of the nonwoven felt. The overall conclusion from the testing was that a thermal phase change did occur as a result of projectile impact; however, the energy dissipation ensuing from this phase change has not proven to be a major contribution to the nonwoven felt's elevated anti-ballistic properties.


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Women's and Gender Studies Clothesline Project
The Clothesline project is a participatory exhibit and a visual display that bears witness and attempts to break the silence surrounding violence against women and girls. The exhibit is comprised of t-shirts decorated to represent a particular woman's or girl's experience, by the survivor herself or by someone who cares about her, or cares about the issue. The shirts are hung on a clothesline for viewing. Participants walk through the rows of clothesline to bear witness to these tragedies. The project focuses on providing healing for survivors of violence, educating the public about violence, and preventing violence. The t-shirts on the clothesline were made by VSU students, faculty, staff and persons from the Valdosta community. The Clothesline is displayed each year in October, during Domestic Violence Awareness Month.


MQTT time stamp
I've set up a simple test that has a couple ESP32's that publish Temp/Humidity pairs to the MQTT connector. I'm able to display a graph with the published data that covers a 24 hour period. The problem I have is with the time display on the graph, it is UTC. Both the ESP32's and RaspberryPi are set to the correct local time. But the incoming data is always displayed using UTC. Is there a way to change this to local time?
Hi tresark,
If you are referring to the timestamp in the metadata, you can add the missing hours with a formular.
In Exceltime 1 represents 1 day. So adding 1/24 to your current time adds one hour to the total. :slight_smile:
Time in A1
In B1 you write =A1+(1/24)
The time in B1 is one hour later then the time in A1.
Thanks for the quick response. I'm not sure though how to use that with the draw.chart function.
What is your Streamsheet looking like at the moment, what do you use as your DataRange for the Chart?
The streamsheet is fairly trivial at the moment. It is based on the Windmill demo included during install. I was able to get the esp32 to post the data using MQTT. The current sensor values are moved from the 'inbox' to a pair of cells D5, D6. I then use the TIMEAGGREGATE function to keep a running average over the course of an hour (=TIMEAGGREGATE(D5,86400,1) in cell D7 and for the other in D8. Then I use (=DRAW.CHART("ID1","Chart1",13743,7594,11668,6191,"scatterLine",D7).
All that said, the demo Wind Cockpit that displays the moving chart for Wind Speed does the same thing. Across the bottom of that chart the times are in UTC.
In the Timeaggregate function you can use the parameter "timeserial".
This defaults to NOW() which is UTC. If you enter "NOW()+1/24" you added one hour to the UTC time! :slight_smile:
Example: =TIMEAGGREGATE(B11,,0,NOW()+1/24)
Perfect, thanks very much.
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What is Minimum Production Speed, and why is it necessary?
Minimum Production Speed is the minimum speed at which the machine is considered to be running in production operation; for most machines it should be set to 1 unit rate of production. This parameter is defined to provide some customers with a method to represent actual machine status for specific machines in a way that […]
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Scientists propose storing DNA 'ark' on the Moon to preserve our planet
Written on 03/15/2021
By Ciarán Mather
It would seem that some scientists are planning to give a futuristic twist to the old phrase 'don't keep all your eggs in the one basket.'
A group of researchers have suggested sending an 'ark' full of DNA from Earth, consisting of various types of sperm, eggs and seeds from plants.
In their proposal, they outlined that this 'gene bank' would be hidden inside the moon's lava tubes: hollowed-out tunnels and caves sculpted by lava more than 3 billion years ago inside the moon.
In addition, the banks would be powered by solar panels.
Jekan Thanga, head of the Space and Terrestrial Robotic Exploration (SpaceTREx) Laboratory at the University of Arizona, explained his team's back-up plan to LiveScience: 'There's this strong interconnectedness between us and nature. '
'We have a responsibility to be guardians of biodiversity and [to also be] the means to preserve it.'
He added the lunar ark approach is preferable to simply preserving it on Earth, in the event of our planet potentially succumbing to a disastrous event such as a super-volcano or even nuclear war.
The ark would hold the cryogenically (frozen) genetic material of all 6.7 million known species of plants, animals and fungi on Earth.
This would require at least 250 rocket launches to transport the cargo to the moon from Earth, according to researchers.
Not all the technology needed for this ambitious project exists yet, but the researchers think that it could realistically be built within the next 30 years.
The idea of an ark containing Earth's DNA echoes similar concepts seen in science fiction stories before, such as in 2017's Alien: Covenant.


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Images Paint for OneNote crop
Because in OneNote, there is no direct function, with the help of which you crop images, you need to to Paint draw:
- Open Paint.
- Insert your image by Drag & Drop or via "file" and "Open".
- At the top, click "Select" and you cut, holding down the right mouse button to your desired area.
- Click with the right mouse button on the selected area and select "cut".
- You delete the entire image ("Select All" and then [Del]) and then paste with "Paste" the cut-out neckline. Save the image and paste it in OneNote.
OneNote has notes of additional functions. You can, for example, a check-list in OneNote, create.


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The algorithm for extracting number plate can be summarized as:-
- 1.Capture image from webcam.
- 2.Store the captured image into a image file for further processing.
- 1.Identify the intensity of the image.
If image intensity = high Reduce intensity Else if intensity = low Increase intensity Else No change.2.Convert image into grayscale.
- 3.Calculate appropriate threshold value for the image.
- 4.Convert the image into binary image using the calculated threshold.
- 1.Fill small holes including numbers of Number plate so that number plate area will be large to isolate from figure. 2.Determine width and height of the image. 3.Scan each pixel of line counting number of white pixels in the following system,
If number of 'white' pixels < x; pixels become 'black' Else; no change If number of 'white' pixels > y; pixels become 'black' Else; no change The value of x and y may be changed according the image intensity and plate area.4. Use the step no. 3 for both horizontal and vertical direction.
- 5.Check number of possible areas.
- 6. Logically AND with binary image obtained at "Convert image into binary algorithm.
- 7.Crop the required area.
- 1.Filter the noise level present in the image.
- 2.Clip the plate area in such a way that only numbers of plate area extracted.
- 3.Separate each character from the plate.
- 1.Create the template file from the stored template images.
- 2.Resize image obtained from segmentation to the size of template.
- 3.Compare each character with the templates.
- 4.Store the best matched character.
- 1.Open a text file in write mode (append mode in case of the multiple records).
- 2.Store the character obtained from the number identification process to text file in given format.
- 3.Close the file
Pic 1:- Number plate that is to be extracted.
Open the main.m file in MATLAB.
Now run the main.m file in the MATLAB. It may prompt you to change the default directory. You can either change folder or Add to Path. Better change the directory.
You will get a messagebox showing the extracted number plate. Message box like this:-
The log file ( log.txt ) is maintained to keep track of the saved number plates ( which can be used in application level ). The log file content contains the number plate with the date saved.
In main.m there are certain lines which when commented can be used to see the step by step characters extraction.
Feel free to ask any queries if any problem occurred. I am using MATLAB 7.12.0 (R20011a) but it should work in all version.
Download the whole project here.
The project involving the number plate extraction :- ANPR(Automatic Number Plate Recognition) Using ALR(Automatic Line Tracking Robot).


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The goal for the Senior Firewall Engineer is to ensure the integrity of high availability security infrastructure in order to provide maximum performance and stability for critical applications and services.
The Sr. Firewall Engineer is additionally responsible for providing guidance and mentorship to other Firewall and Networking members.
As the Senior Firewall Engineer your responsibilities will include:
- Supporting the firewalls and security devices within the data system
- Install, support and maintain firewall and other security hardware and software infrastructure according to industry best practices, including firewalls, intrusion detection and prevention devices, and VPN concentrators
- Diagnose advanced problems and solve issues, often under time constraints
- Subject matter expert for the firewall team and consult with other business units when necessary.
- Monitors network performance and implements performance tuning when necessary.
- Create and update documentation utilizing organizational standards to ensure retention and collaboration of knowledge
- Updates job knowledge by participating in educational opportunities; reading professional publications; maintaining personal networks; participating in professional organizations.
- Manage firewall/security systems by establishing and enforcing policies; defining and monitoring access.
- Reporting firewall operational status by gathering, prioritizing information; managing projects.
- Work closely with colleagues to meet team goals and improve processes and practices
This is a W2 only role.
Send updated resume to _EMAIL_.
A little about us:
Founded in 1948, Robert Half (NYSE: RHI) is the world's first and largest specialized staffing services firm.


Fun & Lifestyle
What Does It Mean When Cats Lick Each Other?
Feline interaction is an amusing sight to behold. But, to understand why cats interact a certain way is a different kettle of fish.
Today's post will dive into the world of cat grooming, licking, or washing. More specifically, Allogrooming (social grooming) and mutual grooming.
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In a nutshell, cats lick each other for hygiene and social bonding. However, licking is not always a positive experience for all cats involved. Tension may build up and fighting starts.
An awareness of the many different reasons why cats lick each other will help the cat guardian detect acceptance, hierarchy, and even illness among cats. Read on.
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What does it mean if a cat licks another cat?
Licking is first learned and experienced by cats at birth. The Queen will lick her kitten clean including its amniotic sac, fluids, and umbilical cord.
The reason is both for hygiene and transferring the "family scent" to her litter. The Queen should do this immediately with each kitten while in labor for the rest of her litter. This should provide the Queen with essential nutrients and prevent infections from her litter.
Eventually, sibling cats and felines that grow up together will mirror the Queen's act and lick each other to help keep everyone clean. Mating cats may also bond through licking.
If you introduce a new cat to the household, the other cats may start licking the new cat. This means they welcome and accept the new cat.
Why do cats lick each other's private areas?
It is normal for cats to help each other keep their bums and privates clean by licking these hard to reach areas. With newborn kittens, it is essential.
At birth, you will notice the Queen will lick its kittens' abdomen and private areas. This is necessary to encourage the kitten to poop and pee.
Newborn kittens will not excrete without stimulation. If the kitten is abandoned or its mum dies during birth, you need to stimulate its private areas with a warm, wet cloth.
If you adopt kittens, your existing cat may take on a motherly role and lick the other cat's bum. Be careful as not all Queens will care for adopted kittens. Often, they will reject a cat that does not have its scent. This is why it is vital to leave the Queen with her instinct to lick her kittens clean. This way, she is less likely to abandon them.
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Why does my cat lick my other cat's head?
You know when you have someone scratch your back, you won't let just anyone scratch it for you. It has to be someone you trust.
Cats are like this, too. Your cat may approach a fellow feline to be groomed. They may stretch out and expose their head or neck.
When self-grooming, cats will lick their paws to wash their head and neck. It just feels cleaner when another cat can lick those hard to reach areas.
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Why do cats bite each other's necks while grooming?
Biting is as much a sign of affection as licking is. It is built on trust, familiarity, and feeling at ease.
But, the biter can also be showing its dominance. It is not necessarily aggression or bullying, rather showing who the alpha is in the household.
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Cats grooming each other show dominance
Research has revealed that dominant and confident cats are most likely to lick more submissive or shy cats. The alpha will stand or sit upright while licking the other cat (lying or sitting lower) often in the head-neck area only.
You see, even cats lay boundaries on where they can be licked. Some cats would allow their back or even their ears to be licked clean. Often cats would hit the other if it licks their paws.
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Why do my cats lick each other and then start fighting?
Watch out for signs of tension especially from the cat being groomed. The same goes for when petting your cat. If the groomed cat stiffens up, stops purring, and twitches the tip of its tail this can result in aggression.
If a cat is not used to being licked, it can either resist or tolerate. This depends on the temperament of your cat and when they are fighting to establish a pecking order.
Allogrooming ends when the cat being licked will move away, fight or flee. This does not mean they don't like being groomed. It means they had enough like when we move away after a hug that lingered too long.
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Cats licking each other and then fighting could be a sign of illness, too.
Cats are sensitive to physical and emotional unease, both from their own kind as well as from their human companions. Licking can be done to soothe a stressed or unwell cat.
Your cat can lick a family feline that is suffering from pain in a certain area. Lingering grooming in a certain spot could be a sign of illness, such as pain in the bones, muscles, ligaments, or organs.
However, instead of soothing a fellow cat, some cats would sound the alarm by showing aggression. It can hiss or start a fight. Check the groomed cat for signs of fleas or infection.
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Why don't my cats groom each other?
There is no reason to worry about cats that do not groom each other. As long as they self-groom, it is okay.
Cats show affection in different ways. They may sit or lie next to each other. They may play with, chase, protect, or even play-fight with each other.
Licking each other takes a whole new level of trust and intimacy. It is a matter of preference. Some are really cozy and like to snuggle.
Their temperament may change as they grow old, too. Sibling kittens may lick and snuggle while they are young and grow up and stop showing affection this way.
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How does a cat feel when being licked by another cat?
In general, cats will relax and feel reduced tension when licked by another cat. This is most evident with the Queen and her litter. You may notice kittens feel calmer after being licked by their mum. However, excessive licking can cause tension and stress, too resulting in fights.
It is quite amusing to see a feline simply tolerate a cat who likes to lick others clean. Even dominant cats will let younger cats lick them clean to reinforce social bonds. Among siblings, younger cats can try to establish a higher hierarchy than their older siblings by licking, too.
Sometimes, cats will get annoyed by licking and will walk away. Lickers may do this explicitly to get what they want such as a window perch the other feline was sitting on.
Why do cats groom other pets?
In a multi-pet household, you may find cats grooming your dog or other pets to show affection and bonding. A dominant cat may groom a younger or more submissive dog, too. Licking is also done to spread the communal scent within members of the household, including their human companions.
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What does it mean when cats lick you?
It is a privilege for a cat parent to be licked by family felines. It means they like you and branding you as their own. Again, your cat not licking you does not mean it cares less for you.
Your cat can lick and then bite you, or bite then lick you. In turn, when you pet it you have to keep within boundaries. You will notice when you have crossed the line because your cat will be tense, be aggressive, or move away.
How to stop a cat from licking you
Do you have a clingy cat, but you prefer not to have affection shown this way? After all, a cat's tongue is rough. You may distract your cat with food or play, but do not scold or punish the little feline.
Avoid letting your cat lick you if it had been out hunting to avoid passing on infections. For your cat's safety, you may want to keep it indoors. Discretion should be exercised.
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Wrap Up
Cats lick each other mean positive social interactions, helping each other groom, showing acceptance and dominance. Licking is an acquired trait from the mother cat. Felines can spot stress and illness in a fellow cat when they are licking.


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Graceful Tree Conjecture is one of my favorite open problems (See this earlier post). Trees with diameter 4 and 5 are known to be graceful a decade ago.
One of my advisees, Matt Superdock, made progress towards proving that all diameter 6 trees are graceful. Matt is an undergraduate senior in our Mathematics Department. He proved that an interesting class of diameter 6 trees are graceful. His thesis is available here.
I hope his work motivates more researchers to make progress towards resolving Graceful Tree Conjecture, particularly for diameter 6 trees. Matt's work really tests the limit of current techniques. Perhaps we need new techniques/insights to prove that all diameter 6 trees are graceful.
Graceful Tree Conjecture (GTC) is one of my favorite open problems. I posted it on Open Problem Garden couple of years back. I enjoy reading papers related to graceful labeling and try to keep as up-to-date as possible with the progress towards GTC. Here is a brief introduction to GTC.
Graceful Labeling : Label the vertices of a simple undirected graph (where and ) with integers from to. Now label each edge with absolute difference of the labels of its incident vertices. The labeling is said to be graceful if the edges are labeled through inclusive (with no number repeated).
A graph is called graceful if it has at least one such labeling. This labeling was originally introduced in 1967 by Rosa [Rosa'67]. The name graceful labeling was coined later by Golomb. It is easy to see that stars and paths are graceful. Some known graceful graphs are paths, stars, complete bipartite graphs, prism graphs, wheel graphs, caterpillar graphs, olive trees, and symmetrical trees, gear graphs, rectangular grids.
Gracefully labeled graphs have applications in coding theory and communication network addressing. Look at this paper [Basak'04] for an application in MPLS Multicasting. The following conjecture is due to Kotzig, Ringel and Rosa.
Graceful Tree Conjecture (GTC) : All trees are graceful.
Ringel's Conjecture : If is a fixed tree with edges, then complete graph on vertices decomposes into copies of.
Exercise : The existence of a graceful labeling of a given graph G with n edges is a sufficient condition for the existence of a cyclic decomposition of a complete graph of order 2n+1 into subgraphs isomorphic to G. In particular, GTC implies Ringel's conjecture.
A caterpillar graph is a tree such that if all leaves and their incident edges are removed, the remainder of the graph forms a path. Here's a cute exercise. There is an elegant inductive proof.
Exercise : Prove that all caterpillar graphs are graceful.
Open Problems :
- Graceful Tree Conjecture (GTC) is still open. There are couple of papers on arxiv claiming to have settled GTC. I went through the proofs and found some mistakes.
- As an intermediate problem, prove that all lobster graphs are graceful. This is also an open problem. Some special cases of lobsters (eg : lobsters with perfect matching) are proved graceful [Morgan'02].
- Complexity of graceful labeling is open. A related problem called harmonious labeling was shown to be NP-complete.
- Improve approximate factors of relaxed graceful labeling [Bussel'02].
- [Rosa'67] Alex Rosa, On certain valuations of the vertices of a graph. Theory of Graphs, (1967) 349–355
- [Bussel'02] Frank Van Bussel: Relaxed Graceful Labellings of Trees. Electr. J. Comb. 9(1): (2002)
- [Morgan'02] David Morgan: All Lobsters with Perfect Matchings are Graceful. Electronic Notes in Discrete Mathematics 11: 503-508 (2002)
- [Basak'04] Ayhan Basak, MPLS Multicasting Using Caterpillars and a Graceful Labelling Scheme, Eighth International Conference on Information Visualisation (IV'04), pp.382-387, 2004


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India's First Comic Book on Organ Donation
A non-governmental organization Shatayu working in the field of voluntary organ donation has come up with a comic book to inspire school students and their parents. The illustrated comic titled 'Super Donor' is meant for students of standard VI to XII.
India's First Comic Book on Organ Donation - Super Donor
The comic on organ donation will be distributed among all the students. Chairman of Shatayu Dipak Patel says, "The objective behind this is to initiate the young generation and their parents in organ donation. If any family member is brain dead, then the relatives are the ones who can take the decision to donate organs. This can help save several other lives."
The comic also has a voluntary organ donation form which is meant for the children to give to their parents to be filled up. "The comic, we hope, will tell the youngsters as well as their guardians how each one of us has the power to save lives".
- Copyright © 2021. Published by MOHAN Foundation
- Keywords: Comic Book, India


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Maintenance III - 1990 Folsom
San Francisco, CA 94103
Position: Maintenance III – 1990 Folsom
Location: San Francisco, CA
Mission: Tenderloin Neighborhood Development Corporation (TNDC) provides affordable housing and services for low-income people in the Tenderloin and throughout San Francisco, to promote equitable access to opportunity and resources.
Established in 1981, TNDC has grown to employ more than 400 staff, to develop, own, manage and provide supportive services in 41 properties that offer deeply affordable housing for nearly 4,700 tenants, and to expand its work in community organizing and after school programming. TNDC is viewed as a trusted and well-organized community ally locally and a practice leader nationally. In San Francisco, TNDC envisions diverse communities where people with low incomes can fulfill their potential and meet their basic needs. In the Tenderloin, TNDC stands as a catalyst for advancing community interests and a force for expanding the choices that enhance livability, such as housing, employment, education, food, cultural activities, and open spaces.
TNDC values are: Integrity, Excellence, Diversity, Collaboration and Equity
Under the supervision of the General Manager or Senior General Manager, the Maintenance III is responsible for responding to daily maintenance requirements and overall upkeep of TNDC buildings and facilities and staff supervision.
- Directly hire, supervise and manage maintenance and custodial staff including preparation of employee evaluations and recommendations for discipline or promotions.
- Respond to daily work orders and maintenance requests including:
- Plumbing: Replace faucets, Snake drains (sink and tubs), Install toilet valves
- Carpentry: Hang windows and doors, Repair hinges, Repair/replace door and window locks
- Electrical: Door buzzer repairs, Low voltage electrical repairs
- Paint and patch walls.
- Sheetrock repairs.
- Report unusual occurrences or suspicious activities to supervisor.
- Keep supervisor informed of maintenance problems.
- Provide effective and courteous service to residents, guests and coworkers.
- Conduct work tasks safely in compliance with safety rules.
- Inspect units during monthly pest control; notes the condition of the unit.
- Perform and keep record of all fire and life safety, and operational equipment preventive maintenance.
- Establish and follow building preventive maintenance schedule.
- Respond to building emergencies on after hour's on-call schedule.
- Other duties as assigned.
REQUIRED SKILLSKnowledge and Skills:
- Ability, willingness and sensitivity to work with a diverse, low-income population.
- Maturity, honesty, dependability, initiative and follow-through.
- Ability to read and communicate in English sufficiently to follow directions and communicate with supervisor, coworkers and residents.
- Ability and willingness to work tactfully under pressure; cope with stress.
- Problem-solving ability.
- Ability to perform medium to heavy work involving sitting, standing, walking, lifting up to 75 pounds and climbing ladders and stairs.
- Ability to use a variety of hand and power tools necessary to perform mechanical, carpentry, electrical, plumbing and other building repairs and maintenance work.
- Ability to operate a variety of equipment including mechanic tools, carpenter tools, electrical tools, plumbing tools, shovels, rakes, etc.
- Ability to move objects, occasionally requiring exertion of considerable force.
- Ability to differentiate shades of color in performing electrical maintenance, painting and other work.
- Ability to coordinate eyes, hands and fingers in performing maintenance tasks.
- Ability to drive motor vehicles, including trucks.
- Visual acuity necessary to inspect buildings and review work orders.
- Hearing acuity sufficient to use telephone and communicate with residents and staff.
- Ability to add, subtract, multiply, divide.
Judgment and Reasoning Ability:
- Ability to judge situations where supervisor's involvement is needed.
- Ability to apply common sense understanding to semi-repetitive tasks.
Language and Communication Ability:
- Ability to comprehend and correctly use maintenance logs, work orders, time sheets, etc.
- Ability to comprehend resident handbook and employee manuals.
- Ability to communicate effectively with coworkers and staff at all levels, residents, both verbally and in writing.
- Ability to adapt to changes in policy, methods, operations, etc. as they apply to property management operations and activities.
- Ability to work in an office environment and in and outside a variety of residential buildings.
- Ability to work under hot and cold conditions.
- Ability to work under conditions of moderate noise.
- Six months of consecutive experience in residential housing maintenance/property management.
- One year of supervisory experience.
- Two years of experience in the building trades plumbing, electrical, carpentry or appliance repair.)
- Excellent interpersonal skills, ability to work on a team.
- Capacity to work with a culturally diverse, low-income population.
- Ability to work independently and to follow instructions with minimal supervision.
- Ability to operate hand and power tools.
- Ability to lift 75 pounds and climb ladders.
- Ability to order supplies and maintain workable inventories.
- Excellent plumbing, electrical carpentry and painting skills.
- Knowledge of Cal/OSHA safety/code requirements.
- Certification of high rise and fire safety training.
- HVAC certification.
- Knowledge of lead paint/asbestos abatement training/certification.
- Valid California drivers' license and a motor vehicle report that matches TNDC's insurer's minimum guidelines.
Tenderloin Neighborhood Development Corporation is an Equal Opportunity Employer.
In compliance with the San Francisco Fair Chance Ordinance (August 13, 2014), all qualified applicants with criminal histories will be considered for the position.


Cookbook:Charoset Maghrebi
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Cookbook | Ingredients | Recipes
Maghrebi Charoset is a dried fruit and nut based paste served during the Jewish celebration of Passover by Jews from Northwest Africa.
See also: Cookbook:Charoset
 1. Plump dried fruit in juice.
 2. Mash reconstituted fruit with almond and spices to get a mortar-like texture.
 3. Adjust texture with matsoh meal and if needed, sweeten with honey.
 4. Serve as part of the Seder. The north west African tradition uses bitter greens such as endive rather than horseradish with the Charoseth.


Which Countries are Most Similar to United Arab Emirates?
Have you ever wondered how similar or different two countries are? The Country Similarity Index attempts to quantify how similar countries are to each other relative to other countries. The index is a statistically-based objective way to measure this. The index weights equally five major aspects of countries: their demographics, culture, politics, technology, and geography. In addition each aspect was roughly balanced evenly between quantity/percentage and quality/type. See this post for a full explanation: _URL_
Similar to countries in the Gulf Cooperation Council
The top 5 countries most similar to the United Arab Emirates are all part of the Gulf Cooperation Council. The GCC is similar to the European Union in that people and goods are allowed to flow freely between their countries (although this is not the case for Qatar since 2017). Furthermore, while these countries do not have a shared currency, all of their currencies have a fixed exchange rate with the US dollar. They are also all monarchies and are some of the richest Arab countries.
Top 10 Places Most Similar to the United Arab Emirates
 1. Qatar is another country on the Persian Gulf Coast that was once a British protectorate. Both countries are highly developed and have a massive amount of male immigrants, especially from India. However, political relations between the United Arab Emirates and Qatar have broken down recently. The UAE government has even banned travel to it. Despite this, these countries have an incredibly high degree of similarity.
 2. Bahrain is an island in the Persian Gulf, near Qatar. It is also quite similar to the UAE. One difference is that most Bahrainis are Shi'tes, not Sunnis. The country also has less immigrants than those countries.
 3. Kuwait is a small oil-rich country between Saudi Arabia and Iraq. Like Bahrain, it has many Shi'ites, although they are not the majority. It relies more on oil than gas to generate electricity, unlike the other countries on this list.
 4. Oman is located to the south of the United Arab Emirates. It is more conservative than the UAE and has less tourists. In stark contrast to other countries on this list, it does not have any skyscrapers. In fact, they are illegal. Furthermore, most of its people are Ibadis, not Sunnis.
 5. Saudi Arabia is another oil-rich Muslim country with a high level of development. However, UAE is far more cosmopolitan than Saudi Arabia. Its laws are more liberal and nearly 90% of its inhabitants are immigrants. In addition, UAE is much more densely populated.
 6. Jordan, 7. Egypt, 8. Iraq, 9. Libya, 10. Lebanon
Top 10 Places Least Similar to the United Arab Emirates
 1. Burundi is a densely populated, landlocked African country. It was a colony of Belgium, before becoming independent. So it is mostly Catholic and one of its official languages is French. It is one of the poorest countries in the world, in contrast to the UAE.
 2. Papua New Guinea is a tropical Christian country in the Pacific Ocean. In contrast to the deserts of UAE, it is one of the wettest countries on Earth. While UAE is highly developed, Papua New Guinea has little infrastructure. Like Burundi, it is also a Christian country, but it is mostly Protestant. One similarity is that it both were controlled by Britain.
 3. Lesotho is another poor Christian country on this list. It is completely surrounded by South Africa. Although both countries are monarchies, Lesotho's monarch only has ceremonial powers and the government is mostly democratic.
 4. Mozambique is a tropical country, next to Malawi. It was a colony of Portugal before its independence. Although it is mostly Christian, it has the highest percentage of Muslims on this list with around 20%. Its technology is also far different from UAE, since it drives on the left, has different electrical outlets, and uses a different train gauge.
 5. Democratic Republic of Congo, like Burundi, is another former Belgian colony that is extremely poor. In contrast to UAE, a vast majority of its land is forested. In addition, it also has little demographic or cultural similarity to UAE as well.
 6. Madagascar, 7. East Timor, 8. Haiti, 9. Rwanda, 10. Malawi
 Full Ranking of Countries and Territories Most Similar to the United Arab Emirates
Do you agree with the list?
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Sermon June 21: The Fear of Suffering
Sermon given by the Rev. Andy James at Choctaw United Methodist Church on Sunday, June 21, "The Fear of Suffering."
Scripture 1: Romans 5:1-8
Scripture 2: 1 Peter 4:12-19
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Church Services:
* Nursery care is provided for children three and under.
* Social-distancing wristbands will be available on greeting tables. These wristbands are used to indicated a person's willingness for close interaction: Green = okay with high-fives and handshakes, Yellow = okay with talking but no touching, Red = would like to maintain a distance of six feet.


Concise Binary Object Representation (CBOR) Tags for Date Microsoft
pdv Financial Software GmbH
Applications CBOR Working Group Compact Binary Object Representation CBOR Tag Date Internet-Draft The Concise Binary Object Representation (CBOR, RFC 7049) is a data format whose design goals include the possibility of extremely small code size, fairly small message size, and extensibility without the need for version negotiation. In CBOR, one point of extensibility is the definition of CBOR tags. RFC 7049 defines two tags for time: CBOR tag 0 (RFC 3339 date/time string) and tag 1 (Posix "seconds since the epoch"). Since then, additional requirements have become known. This specification defines a CBOR tag for an RFC 3339 date text string, for applications needing a textual date representation within the Gregorian calendar without a time. It also defines a CBOR tag for days since the date 1970-01-01 in the Gregorian calendar for applications needing a numeric date representation without a time. It is intended as the reference document for the IANA registration of the CBOR tags defined.
The Concise Binary Object Representation (CBOR) provides for the interchange of structured data without a requirement for a pre-agreed schema. RFC 7049 defines a basic set of data types, as well as a tagging mechanism that enables extending the set of data types supported via an IANA registry. This specification defines a CBOR tag for a text string representing a date without a time. The tagged text string is represented as specified by the RFC 3339 full-date production. Per RFC 3339, this represents a date within the Gregorian calendar. This specification also defines a CBOR tag for an integer representing a date without a time. The tagged integer is an unsigned or negative value indicating the number of days since the Gregorian calendar date 1970-01-01. As an implementation note, this value has a constant offset from the Modified Julian Date value (which is defined by the Smithsonian Astrophysical Observatory as the number of days since November 17, 1858); this value is the Modified Julian Date minus 40587. Note that since both tags are for dates without times, times of day, time zones, and leap seconds are not applicable to these values. These tags are both for representations of Gregorian calendar dates.
Calendar dates are used for numerous human use cases, such as marking the dates of significant events. For instance, John Lennon was born on October 9, 1940 and died on December 8, 1980. One such common use case is driver's licenses, which typically include a date of birth. The dates used in this specification use the Gregorian calendar, as do those in RFC 3339. The time zones and actual times of these events are intentionally not represented in the calendar date. The epoch chosen for the second tag, which represents days since the Gregorian calendar date 1970-01-01, is related to the IEEE Std 1003.1, 2013 Edition time epoch 1970-01-01T00:00:00Z UTC only insofar as both contain the date 1970-01-01. This should not be construed as indicating that dates using this tag represent either a specific time of day and/or time zone. The day of the week (Sunday, Monday, Tuesday, etc.) is not explicitly represented in either of these date formats. However, deterministic algorithms that are beyond the scope of this specification can be used to derive the day of the week in the Gregorian calendar from dates represented in both of these formats.
Comparison of dates in full-date format can be accomplished by normal string comparison, since by design, the digits representing the date are in fixed format and ordered from most significant to least significant. Comparison of numeric dates representing days since 1970-01-01 can be performed by normal integer comparison. Comparison of dates in other formats or using other calendars require conversions that are beyond the scope of this specification.
Comparing dates with times is beyond the scope of this specification. That said, if a date is augmented with a time zone and time of day, comparing that augmented date with other times becomes possible. For instance, if one were to augment John Lennon's birth date of October 9, 1940 with the time of day and time zone of his birth, then it would be possible to derive a time at which he was born that could be compared with other times.
This section registers the following values in the IANA "Concise Binary Object Representation (CBOR) Tags" registry. Tag: 1004 (value requested) Data Item: UTF-8 text string Semantics: RFC 3339 full-date string Reference: [[ this specification ]] Tag: 100 (ASCII 'd') (value requested) Data Item: Unsigned or negative integer Semantics: Number of days since the epoch date 1970-01-01 Reference: [[ this specification ]]
The security considerations of RFC 7049 apply; the tags introduced here are not expected to raise security considerations beyond those. A date, of course, has significant security considerations. These include the exploitation of ambiguities where the date is security relevant or where the date is used in access control decisions. When using a calendar date for decision making, for example access control, it needs to be noted that since calendar dates do not represent a specific point in time, the results of the evaluation can differ depending upon where the decision is made. For instance, a person may have reached their 21st birthday in Japan while simultaneously being a day short of their 21st birthday in Hawaii.
Concise Binary Object Representation (CBOR) Tags IANA The Open Group Base Specifications Issue 7 IEEE
Thanks to Carsten Bormann for supporting creation of this specification. Parts of the explanatory text in this specification come from draft-bormann-cbor-time-tag-02. Thanks to these people for reviews of the specification: Henk Birkholz, Carsten Bormann, Thiago Macieira, Francesca Palombini, Michael Richardson, Jim Schaad, Juergen Schoenwaelder, and Dale Worley.
[[ to be removed by the RFC Editor before publication as an RFC ]] -04 Addressed shepherd comments by Francesca Palombini. Addressed additional review comments by Jim Schaad and Michael Richardson. -03 Added statement that these tags are both for representations of calendar dates. Described consequences of using calendar dates in access control decisions. -02 Addressed working group last call comments, including stating that time zones are not applicable to these values. -01 Changed "positive or negative" to "unsigned or negative". Added an implementation note about the relationship to Modified Julian Dates. -00 Initial working group version based on draft-jones-cbor-date-tag-01 with no normative changes.


Review of John Q – Essay Sample
Home Essay Examples Movies Review of John Q – Essay...
John Q is an emotionally-packed movie that surrounds the unfortunate medical circumstances of John, played by Denzel Washington, and his son. The purpose of the film was to raise the many issues surrounding poor health care in the United States, and even less empathy from hospital administration and insurance companies. After John's son collapses at a baseball game, the doctors diagnose him as having a heart that is too large for his body and declare that he must receive an immediate transplant to survive. Quickly, the hospital administration informs John that his insurance plan does not cover such an operation and an immediate payment of $100,000 must be made just to get his son's name on the donor list. There are multiple issues surrounding the problems of John and his family, and through the use of cinematic techniques the director, Nick Cassavetes, brings these issues to life and sparks a national discussion on health care.
The movie contains multiple scenes of close-up camera shots, highly emotional scenes and the use of poignant music to emphasize the heightened emotions of the situation. In many scenes where John is speaking with his sick son, the camera is zoomed in to show the particular facial expressions of the characters. As the actors and actresses begin to shed emotional tears of fear and joy, the audience is able to experience the heightened emotional pull on the importance of the scene. The quality actors are able to act in a way that makes the audience believe in the magnitude of the situation. Washington convinces viewers as he immerses himself in the role and communicates an exceptional believability through communicating with the doctors, administrators and even his own wife. Finally, the director utilizes the power of music to express the heightened emotions surrounding the situation. For instance, in the first scene classical music is playing in the car of a woman as she performs dangerous turns in her car while driving. Quickly, the audience is able to understand that the woman's death has a higher purpose in the overall story and her imminent death is preceded by the poignant, emotional music.
The overall goal of the movie is to communicate the importance of health care reform and the problems surrounding the current health care system with employer-sponsored health insurance. Within the first half hour of the movie, the villain becomes clear: "it's all the fault of a healthcare system that caters to the rich and well-insured middle classes while denying quality care — or even life itself — to the uninsured and to poor people" (Lockard). This villain becomes magnified through the events of the plot; whereby, the employer has changed John's insurance plan without notification and the hospital administrators and doctors are unsympathetic towards the pleas of the family. Through the use of and excellently written screenplay, John Q is able to explain the goal of the movie. The audience is educated from the hospital administrator, played by Anne Heche, "that over forty million Americans do not have health insurance, and many more have inadequate insurance" that increases morbidity and mortality rates through insufficient health care (Lockard). Part of the goal of this movie has been to begin a strong nationwide discussion for changes in the health care system, including the potential of moving towards a universal health care system.
Many individuals place blame on the entire health care system in the United States as being flawed and based solely around putting more money in the pockets of doctors and medical or insurance companies, rather than providing quality health care. Some individuals even claim that if the United States had universal health care, such as the system found in the northern neighbors in Canada, John Q and millions of other individuals would not experience nearly the headaches and heartaches. Unfortunately, universal health are poses its own problems for John Q, as explained by John Vincent from the Objectivist Center. First of all, the Canadian government has total control over paying for the health care system and makes all decisions on the wait lists and treatments that can be provided to all people. In other words, similar care would have been provided to John Q and his son in Canada, and would have likely reached the same diagnosis. However, the government becomes responsible for placing his son on the donor list and the government also decides if and when the patient will receive the surgery (Vincent). Therefore, the financial problems for John Q and the insurance struggles would no longer be the concern, instead the Canadian government would become the villain and John Q's son may never receive his transplant, even with John Q's decision to take hostages – it is out of the control of hospital administrators and doctors.
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GSvit documentation
open source FDTD solver with GPU support
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GSvit in a nutshell
GSvit is an open source software for electromagnetic field propagation calculations via Finite Difference in Time Domain method (FDTD). In this numerical technique, electric and magnetic field values (vectors) in some computational volume are calculated iteratively, solving Maxwell equations, step by step. In order to do this, computational volume needs to be discretized very densely, which affects computational demandness of FDTD, being very large both in processor time and in memory.
Original motivation for writing GSvit was to explore parallelization possibilities offered by graphics cards in the field of numerical electromagnetics. By successive improvements it became rather universal software that can be used in different fields of physics and engineering and we continue in improving the applicability for different tasks. Already now, GSvit features both command line and graphical user interface, can be run on different operating systems and can be used with many different geometries, materials, source conditions, boundaries, etc.
To start your work with GSvit, follow the instructions on Gettng started page.
If you find GSvit valuable for your work, you can cite some of our articles describing its core parts:
motivation/gsvit_in_a_nutshell.txt · Last modified: 2018/01/24 08:14 (external edit)


text:
The Chandrasekhar H-function plays an important role in a wide class of problems of analytical radiative transfer theory. The H-function is the solution of well-known integral equations, both non-linear and linear. The physics of a particular problem under consideration determines the form of the so-called characteristic and dispersion functions, Ψ(μ) and T(μ), respectively. They appear in H-equations and determine their solutions. We show that Ψ(μ) and T(μ) can be restructured in such a way that the solutions of H-equations transforms from H(μ) to Hn(μ),n=2,3,4,… provided Ψ(μ) and T(μ) are replaced with Ψn(μ) and Tn(μ). The structure of the non-linear and linear H-equations does not change under this transformation. The basis of this restructuring is a recursion relation that gives Ψn(μ) and Tn(μ) in terms of Ψ(μ) and T(μ).
|Журнал||Journal of Quantitative Spectroscopy and Radiative Transfer|
|Состояние||Опубликовано - мая 2020|
Предметные области Scopus
- Атомная и молекулярная физика и оптика


From SPARQL Working Group
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SPARQL expressions use a 3-state logic: true, false and unknown. Unknown is the error-raised case. To make sure a processor only returns things known to be true, FILTER turns "unknown" into false.
For the expression;
"foo"^^xsd:string != "10"^^xsd:integer
then a minimal SPARQL 1.0 query processor is not required to know that the value spaces of xsd:string and xsd:integer are disjoint. For a processor that does not know this, the result of the comparison is "unknown" and an error is raised. If the processor did know they are disjoint, then it can return "true" -- such behavior would be adding a row to the dispatch table for functions for "xsd:string != xsd:integer".
NOT IN is value based and builds on this. If the processor understands that xsd:string and the numeric value spaces are disjoint, then it would return:
?book ?discount
<> "70"
<> "700.0"^^xsd:float
<> 41
which is what I think you are expecting. It's the additional fact of xsd:string and xsd:integer having disjoint value spaces that is key here.
Being value based:
"700"^^xsd:float IN (500, 600, 700) is true.
Using sameTerm it would be false which might be surprising.
Andy, on behalf of the SPARQL-WG


Take the 2-minute tour ×
The title explains it all. Do objects suspended in ice sink over time? You may remember the story of World War 2 planes that were found 260 ft under the ice which would be anachronistic with seasonal ice layering alone. I'm trying to establish other possible mechanisms. I know that ice flows up and down in glaciers, but will an object actually sink in ice over time?
Also, in what way would they sink? Would heavier parts sink faster than the lighter. Does buoyancy play a role.
share|improve this question
Isn't the title misleading? Ice is a solid, how can something sink inside it? – jinawee Feb 27 at 18:59
_USER_ It seems to be false: physics.stackexchange.com/q/65740 – jinawee Feb 27 at 19:16
_USER_ I'm not claiming this for ice or glass but some materials that seem to be solid actually experience viscoelastic creep. See for example the famous pitch drop experiment. – OSE Feb 27 at 19:41
_USER_ Under higher pressure, ice has a lower melting point. Technically if something heavy was placed on ice it could sink in due to this melting effect. If the surrounding climate is below 0 degrees C then as this happens more ice would freeze around the object. Perhaps this could constitute as sinking into a solid. – wgrenard Feb 27 at 19:46
_USER_: true, but you need a lot of pressure! – John Rennie Feb 27 at 20:10
2 Answers 2
up vote 5 down vote accepted
If the article you are referring to is this one, then the planes didn't sink into the ice but were buried by blizzards.
Ice does exhibit ductile flow at stress of around 1 to 10MPa, but this pressure is equivalent to around 100 to 1000 tons per square metre and this is far above the stresses normally produced by objects resting on ice. Glaciers flow because the stress is concentrated at the interface between the ice and the rock, and this can produce the enormous stresses required.
So the answer to your question is that no, objects don't sink into ice under their own weight (unless your object is made from neutronium). However freeze thaw cycles can give this impression.
share|improve this answer
Interesting. There is a corollary proposed by some creationists that since these plains were covered so rapidly, 260 feet (79.2 meters) in 40 years, certain core samples could not be as old as they are said to be. I was attempting to refute this particular proposition, or at least answer it as honestly as I can. I'm thinking another approach would be the change in density from the surface downward. I doubt it is constant, and I doubt it is linear. Thanks for your help. – Jordan Feb 27 at 20:54
_USER_ when it comes to creationists: don't feed the trolls. – Carl Witthoft Feb 27 at 22:20
_USER_, not all creationists are trolls. I consider myself one though I have no problems with evolution or modern cosmology. The Everett interpretation gives me heartburn sometimes, but we'll see how that turns out. – Jordan Feb 28 at 13:58
I say yes, things can sink in ice. Here's why: there's a thin layer of liquid on the surface of ice that is why ice is slippery. When you put a body on the surface of ice, it'll keep displacing the layer of liquid, getting deeper and deeper, and will eventually sink completely,
share|improve this answer
But how fast does that occur? Have there been measurements to determine the rate at which surface displacement occurs over extended timescales? Is it fast enough to explain the depth of the planes in question? Either way, interesting article, +1. – DumpsterDoofus Feb 27 at 20:34
But would this continue to happen when the object reaches the freezing point of water? – Jordan Feb 27 at 20:40
_USER_, the paper addresses the problem with the usual explanation of slippery ice through pressure melting. This liquid layer stays on even at very low temperatures, way below freezing. – Aksakal Feb 27 at 20:46
_USER_, I have no idea how fats this would work. It's probably at the speed of diffusion if not slower. – Aksakal Feb 27 at 20:47
Note that, while it's true that ice cqn develop a liquid layer when pressed, this is not enough to explain why ice is slippery, which is a rather more complicated question. – Emilio Pisanty Feb 27 at 21:27
Your Answer


Tag Archives: TV Shows
6 Biggest TV Shows
TV Shows
By fading of your radio signal we mean that incident wave change in the sector strength of signal received from distant transmitter. The fading of signal may be put in the following two categories namely general fading or synchronous fading and selective fading. The fading is caused because of interference between waves that have traveled by slightly different paths. The fading generally is slow taking some minutes to visit from maximum to minimum signal strength. Generally the entire signal fades synchronously. Such a fading is known as general fading or synchronous fading. Amplitude modulated signals traveling through ionosphere experience general fading. The fading might be sensitive to frequency. Thus in amplitude modulated carrier wave the carrier as well as the two side bands may well not fade inside and out synchronously. Such a fading is called as selective fading. Selective fading commonly ends in signals involving large bandwidth like frequency … Read the rest
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the job gets overwhelming, you might consider getting some assistance.
 Regular repair and maintenance
Having a regular inspection done on the hydronic baseboard will ensure it keeps running smoothly.
How do you maintain the hydronic baseboard heater?
First monitor the thermostatic pressure to make sure it measures the temperature, pressure and the height of the water in the unit. Failure to check the pressure gauge could put you in a potential risk if the pressure exceeds 30 pounds. The optimal pressure should be between 12 pounds to 15 pounds.
If the pressure is too high, drain the excess water. Locate the drain valve then turn off the power unit. Then drain off the excess water until the meter is reset.
Hydronic baseboard heaters covers
Perhaps you would want to put a cover on your hydronic baseboard heater. Either because you can't find a hydronic heater that matches interior decor or you simply want to replace the one you use for reasons which could be the cover is discolored or damaged.
Don't worry, you can find a hydronic baseboard heater cover that best suits you.
Baseboard Heat Covers, Baseboard Heater Cover With Caps
This is an elegant baseboard cover with superior quality that comes in a variety of measurements available from 2 to 8 feet. Besides having long-lasting qualities, they are also easy to clean.
1. What Is A Hydronic Baseboard Heater?
You may wonder, what is a hydronic baseboard heater?
To answer the question, let's isolate each component of the word Hydronic baseboard heater.
It's called hydronic because it uses a liquid as a medium. The liquid is typically water or mineral oil.
The use of the words baseboard heater means, that the heater is installed externally on a wall near the floor as opposed to mounting inside walls or freestanding.
So a hydronic baseboard heater is a unit that uses water to some capacity and is attached to a wall at the floor level at a central position. Heating pipes are run under the floor, which is designed to be used to transfer and emit heat across several rooms or zones. This creates an inbuilt heating system.
Hydronic baseboard heaters evolved from the old hollow cast iron radiators to today's trendy and beautiful and stylish baseboard heaters.
Hydronic baseboard heaters are long and relatively slim and provide a simple, cost-effective alternative to warm up your home.
2. How does a Hydronic baseboard heater work?
Hydronic baseboard heaters are common in many homes.
However many people do not know the technical aspect of the hydronic baseboard heater.
Basically a hydronic baseboard heater uses the same principle of radiation like the sun to warm up your home.
The baseboard heater contains a heating element surrounded by a metal tube. The metal tube is filled with water.
When the heater is switched on, the electricity heats the element in the tube which then heats the water inside.
The water turns to hot which then disperses the heat to the aluminum fins along the heater tube. This heat up the surrounding air before the air starts circulating throughout the room or heating zone.
The piping system then further channels heat into more rooms. Heat is sourced from the central baseboard heater, is maintained through flow control valves. In this way, hot water regulates the temperature according to the settings on the thermostat.
convection baseboard heaters are other baseboard heaters that typically resemble hydronic baseboard in terms of design characteristics.
They are placed under windows and are used to warm up small rooms. Unlike hydronic baseboard heaters, convection heaters aren't able to diffuse the heat produced so they require a fan.
They draw cool air in from close to the floor, through the bottom and project it up and a small fan pushes the warm air out overheated fins on top of the heating unit into the room.
3. Are hydronic baseboard heaters self-contained?
Hydronic baseboard heaters are self-contained types. You can move the baseboard heater anywhere in the room.
Nevertheless, you can opt for a central location for the baseboard heaters.
4. How many hydronic baseboard heaters do I need?
You only require one baseboard heater to warm your home with hydronic baseboard heaters. For small rooms or zones use an electric baseboard heater because they are most convenient and are quick to install.
5. Will hydronic baseboard heaters freeze?
The liquid inside hydronic baseboard heaters is made specially treated water that cannot freeze regardless of the outside temperature. The asbestos material used maintains the temperature of the liquid to continue emitting heat even when the baseboard heater has been turned off.
Technology has allowed us to bring comfort to our homes during the cold months with Hydronic baseboard heaters which give a very convenient and effective source of heat to add comfort to your home.
Whenever you go shopping for baseboard heaters, it's important to consider the proper dimensions of your room size and the baseboard heater.
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Was There a Boarding House Where Many of the Hudson River Painters Lived?
The first of its kind in the United States, the Tenth Street Studio Building was designed expressly for use by visual artists. Opening in 1857, the building provided outstanding work space as well as a place where artists could exchange ideas, teach, exhibit and sell their work, making it symbolic of an era in which artists promoted both their work and themselves.
Creative: Tronvig Group