text:
Oscillatory ventilation during exercise in patients with chronic heart failure: Clinical correlates and prognostic implications
Ugo Corrà, Andrea Giordano, Enzo Bosimini, Alessandro Mezzani, Massimo Piepoli, Andrew J S Coats, Pantaleo Giannuzzi
Istituti Clinici Scientifici Maugeri Spa – Società Benefit
Study objectives: Although breathing disorders are often found in patients with chronic heart failure, exertional oscillatory ventilation (EOV) has been occasionally described. The aim of this study was to determine the prevalence, clinical characteristics, and outcome of patients with chronic heart failure and EOV. Setting: Cardiology division at tertiary-care hospital. Study population: We studied 323 patients with chronic heart failure and left ventricular ejection fraction (LVEF) ≤ 40%. Measurements and results: All patients performed a symptom-limited cardiopulmonary exercise test and were followed up for 22 ± 11 months (mean ± SD). EOV was defined as cyclic fluctuations in minute ventilation (V̇E) at rest that persist during effort lasting ≥ 60% of the exercise duration, with an amplitude ≥ 15% of the average resting value. Patients with EOV (12%), as compared to those without, showed higher New York Heart Association (NYHA) class (p <0.05) and lower LVEF (p <0.0001) and peak oxygen consumption (V̇O2) [p <0.0001]. During the follow-up period, 53 patients died or underwent urgent cardiac transplantation; this group showed higher NYHA class (p <0.05) and V̇E/V̇CO2 slope (p <0.0001) and lower LVEF (p <0.0001), mitral Doppler early deceleration time (p <0.01), and peak V̇O2 (p <0.0001). EOV was more frequent in nonsurvivors than in survivors (28% vs 9%, p <0.01). Multivariate analysis revealed peak V̇O2 (X2, 51.5; p <0.0001), EOV (X2, 45.4; p <0.0001), and LVEF (X2, 20.6; p <0.0001) as independent predictors of major cardiac events. Conclusions: EOV is not unusual in patients with chronic heart failure, and is associated with worse clinical status, cardiac function, and exercise capacity. EOV is a powerful predictor of poor prognosis and, consequently, it may be considered a valuable guide in the management of patients with chronic heart failure and should suggest a more aggressive medical treatment policy when detected.
https://doi.org/10.1378/chest.121.5.1572
Exertional oscillatory ventilation
10.1378/chest.121.5.1572
Dive into the research topics of 'Oscillatory ventilation during exercise in patients with chronic heart failure: Clinical correlates and prognostic implications'. Together they form a unique fingerprint.
Stroke Volume Medicine & Life Sciences 40%
Heart Medicine & Life Sciences 14%
Deceleration Medicine & Life Sciences 13%
Heart Transplantation Medicine & Life Sciences 11%
Cardiology Medicine & Life Sciences 11%
Corrà, U., Giordano, A., Bosimini, E., Mezzani, A., Piepoli, M., Coats, A. J. S., & Giannuzzi, P. (2002). Oscillatory ventilation during exercise in patients with chronic heart failure: Clinical correlates and prognostic implications. Chest, 121(5), 1572-1580. https://doi.org/10.1378/chest.121.5.1572
Oscillatory ventilation during exercise in patients with chronic heart failure : Clinical correlates and prognostic implications. / Corrà, Ugo; Giordano, Andrea; Bosimini, Enzo et al.
In: Chest, Vol. 121, No. 5, 2002, p. 1572-1580.
Corrà, U, Giordano, A, Bosimini, E, Mezzani, A, Piepoli, M, Coats, AJS & Giannuzzi, P 2002, 'Oscillatory ventilation during exercise in patients with chronic heart failure: Clinical correlates and prognostic implications', Chest, vol. 121, no. 5, pp. 1572-1580. https://doi.org/10.1378/chest.121.5.1572
Corrà U, Giordano A, Bosimini E, Mezzani A, Piepoli M, Coats AJS et al. Oscillatory ventilation during exercise in patients with chronic heart failure: Clinical correlates and prognostic implications. Chest. 2002;121(5):1572-1580. doi: 10.1378/chest.121.5.1572
Corrà, Ugo ; Giordano, Andrea ; Bosimini, Enzo et al. / Oscillatory ventilation during exercise in patients with chronic heart failure : Clinical correlates and prognostic implications. In: Chest. 2002 ; Vol. 121, No. 5. pp. 1572-1580.
@article{0b3213153cee4aeba7fe93230b607d6e,
title = "Oscillatory ventilation during exercise in patients with chronic heart failure: Clinical correlates and prognostic implications",
abstract = "Study objectives: Although breathing disorders are often found in patients with chronic heart failure, exertional oscillatory ventilation (EOV) has been occasionally described. The aim of this study was to determine the prevalence, clinical characteristics, and outcome of patients with chronic heart failure and EOV. Setting: Cardiology division at tertiary-care hospital. Study population: We studied 323 patients with chronic heart failure and left ventricular ejection fraction (LVEF) ≤ 40%. Measurements and results: All patients performed a symptom-limited cardiopulmonary exercise test and were followed up for 22 ± 11 months (mean ± SD). EOV was defined as cyclic fluctuations in minute ventilation ({\.V}E) at rest that persist during effort lasting ≥ 60% of the exercise duration, with an amplitude ≥ 15% of the average resting value. Patients with EOV (12%), as compared to those without, showed higher New York Heart Association (NYHA) class (p <0.05) and lower LVEF (p <0.0001) and peak oxygen consumption ({\.V}O2) [p <0.0001]. During the follow-up period, 53 patients died or underwent urgent cardiac transplantation; this group showed higher NYHA class (p <0.05) and {\.V}E/{\.V}CO2 slope (p <0.0001) and lower LVEF (p <0.0001), mitral Doppler early deceleration time (p <0.01), and peak {\.V}O2 (p <0.0001). EOV was more frequent in nonsurvivors than in survivors (28% vs 9%, p <0.01). Multivariate analysis revealed peak {\.V}O2 (X2, 51.5; p <0.0001), EOV (X2, 45.4; p <0.0001), and LVEF (X2, 20.6; p <0.0001) as independent predictors of major cardiac events. Conclusions: EOV is not unusual in patients with chronic heart failure, and is associated with worse clinical status, cardiac function, and exercise capacity. EOV is a powerful predictor of poor prognosis and, consequently, it may be considered a valuable guide in the management of patients with chronic heart failure and should suggest a more aggressive medical treatment policy when detected.",
keywords = "Exertional oscillatory ventilation, Heart failure, Prognosis",
author = "Ugo Corr{\`a} and Andrea Giordano and Enzo Bosimini and Alessandro Mezzani and Massimo Piepoli and Coats, {Andrew J S} and Pantaleo Giannuzzi",
doi = "10.1378/chest.121.5.1572",
journal = "Chest",
T1 - Oscillatory ventilation during exercise in patients with chronic heart failure
T2 - Clinical correlates and prognostic implications
AU - Corrà, Ugo
AU - Giordano, Andrea
AU - Bosimini, Enzo
AU - Mezzani, Alessandro
AU - Piepoli, Massimo
AU - Coats, Andrew J S
AU - Giannuzzi, Pantaleo
N2 - Study objectives: Although breathing disorders are often found in patients with chronic heart failure, exertional oscillatory ventilation (EOV) has been occasionally described. The aim of this study was to determine the prevalence, clinical characteristics, and outcome of patients with chronic heart failure and EOV. Setting: Cardiology division at tertiary-care hospital. Study population: We studied 323 patients with chronic heart failure and left ventricular ejection fraction (LVEF) ≤ 40%. Measurements and results: All patients performed a symptom-limited cardiopulmonary exercise test and were followed up for 22 ± 11 months (mean ± SD). EOV was defined as cyclic fluctuations in minute ventilation (V̇E) at rest that persist during effort lasting ≥ 60% of the exercise duration, with an amplitude ≥ 15% of the average resting value. Patients with EOV (12%), as compared to those without, showed higher New York Heart Association (NYHA) class (p <0.05) and lower LVEF (p <0.0001) and peak oxygen consumption (V̇O2) [p <0.0001]. During the follow-up period, 53 patients died or underwent urgent cardiac transplantation; this group showed higher NYHA class (p <0.05) and V̇E/V̇CO2 slope (p <0.0001) and lower LVEF (p <0.0001), mitral Doppler early deceleration time (p <0.01), and peak V̇O2 (p <0.0001). EOV was more frequent in nonsurvivors than in survivors (28% vs 9%, p <0.01). Multivariate analysis revealed peak V̇O2 (X2, 51.5; p <0.0001), EOV (X2, 45.4; p <0.0001), and LVEF (X2, 20.6; p <0.0001) as independent predictors of major cardiac events. Conclusions: EOV is not unusual in patients with chronic heart failure, and is associated with worse clinical status, cardiac function, and exercise capacity. EOV is a powerful predictor of poor prognosis and, consequently, it may be considered a valuable guide in the management of patients with chronic heart failure and should suggest a more aggressive medical treatment policy when detected.
AB - Study objectives: Although breathing disorders are often found in patients with chronic heart failure, exertional oscillatory ventilation (EOV) has been occasionally described. The aim of this study was to determine the prevalence, clinical characteristics, and outcome of patients with chronic heart failure and EOV. Setting: Cardiology division at tertiary-care hospital. Study population: We studied 323 patients with chronic heart failure and left ventricular ejection fraction (LVEF) ≤ 40%. Measurements and results: All patients performed a symptom-limited cardiopulmonary exercise test and were followed up for 22 ± 11 months (mean ± SD). EOV was defined as cyclic fluctuations in minute ventilation (V̇E) at rest that persist during effort lasting ≥ 60% of the exercise duration, with an amplitude ≥ 15% of the average resting value. Patients with EOV (12%), as compared to those without, showed higher New York Heart Association (NYHA) class (p <0.05) and lower LVEF (p <0.0001) and peak oxygen consumption (V̇O2) [p <0.0001]. During the follow-up period, 53 patients died or underwent urgent cardiac transplantation; this group showed higher NYHA class (p <0.05) and V̇E/V̇CO2 slope (p <0.0001) and lower LVEF (p <0.0001), mitral Doppler early deceleration time (p <0.01), and peak V̇O2 (p <0.0001). EOV was more frequent in nonsurvivors than in survivors (28% vs 9%, p <0.01). Multivariate analysis revealed peak V̇O2 (X2, 51.5; p <0.0001), EOV (X2, 45.4; p <0.0001), and LVEF (X2, 20.6; p <0.0001) as independent predictors of major cardiac events. Conclusions: EOV is not unusual in patients with chronic heart failure, and is associated with worse clinical status, cardiac function, and exercise capacity. EOV is a powerful predictor of poor prognosis and, consequently, it may be considered a valuable guide in the management of patients with chronic heart failure and should suggest a more aggressive medical treatment policy when detected.
KW - Exertional oscillatory ventilation
U2 - 10.1378/chest.121.5.1572
DO - 10.1378/chest.121.5.1572
JO - Chest
JF - Chest


UK x JP 2016 has completed. Thank you very much for your support.
For details of the latest conference, please visit here.
As developed countries, Japan and the United Kingdom share similar issues that are different from issues in developing countries: stagnation in economic growth; disparity of wealth; etc. Comparative studies of poverty amongst developed countries are still yet to be made, and there is a definite space for contribution. In the 1st UK-Japan Student Conference, we will examine both the similarities and differences between the two countries with the hope of arriving at a shared solution.
Cost Participation fee: around 80 GBP, excluding accommodation fee.


text:
Q: Flatten control flow graph to list of bytecode instructions I am using the ObjectWeb ASM library found here to parse jar files and read the bytecode of methods. I have already written code to generate a control flow graph from the bytecode instruction lists.
However, after I perform some operations on the control flow graph I want to be able to "export" the control flow graph back to a (simple) list of instructions.
In theory, I should be able to iterate through all of the basic blocks and print out the instructions that are stored in each one. However, doing this will most likely result in the instructions being in a very bizarre order because there is no ordering to the list of basic blocks.
I have read that forming a "dominator tree" can help figure out the best (most logical) ordering of the basic blocks.
I'm not sure how to calculate the dominator tree and how to use it to sort the basic blocks.
Does anyone have any knowledge on this topic that they could share?
Thanks.

redpajama_set_name: RedPajamaStackExchange


text:
Facebook Twitter LinkedIn Youtube Instagram RSS
How APIs Can Help Rebuild Customer Relationships Going Forward
Prior to the global crisis, many businesses struggled to effectively execute digital transformation strategies
By Rob Thorne
You're reading Entrepreneur Asia Pacific, an international franchise of Entrepreneur Media.
Businesses across the globe have had to radically rethink how they operate and interact with their customers in recent times. While the impact will be varied and, for some businesses, volatile, there is a definitive need, now more than ever, to digitize with speed and scale in order to thrive and rebuild revenue.
Prior to the global crisis, many businesses struggled to effectively execute digital transformation strategies. In fact, MuleSoft's Connectivity Benchmark Report revealed that only 12 per cent of organizations surveyed have a company-wide API strategy. While this period in time has rapidly accelerated digital transformation journeys for many businesses in the region, the pressing question that's on many leaders' minds now is how to move forward and ensure their digital transformation roadmaps are equipped for a post-pandemic world.
As more and more new business users emerge in the wake of the pandemic, there is a need to amplify the implementation and reuse of APIs. Outside of IT, the top three business roles with integration needs include business analysts (46 per cent), HR (46 per cent), sales (40 per cent) and marketing (40 per cent).
In order to facilitate the democratization of technical integration, the perception of IT's role in business needs to urgently change, and priorities need to be re-evaluated. Digital transformation is achievable once businesses understand how an API-led roadmap can help manage priorities and deliver customer-centric initiatives quickly.
Innovation is top priority for enterprises that are looking to prepare themselves for the new normal, but it is also a challenge. Consumers' expectations and behaviours have rapidly evolved this year, increasing the pressure for businesses to keep pace. Those that were already struggling to manage legacy systems with more modern architecture could find themselves falling behind at an even faster rate now, as the rest of the business world sprints forward in the race for consumer engagement.
Building a strategy that leverages APIs will prepare businesses to be on the front foot no matter what challenges arise. It can help to improve the customer experience online, create efficiencies and provide opportunities to generate new revenue streams.
A recent report found that IT leaders report an average of 31 per cent of their company's revenue is generated from APIs. This number is set to increase as organizations begin to embrace the API economy and recognize its business value.
However, while revenue generation plays an integral role for most companies, the impact of APIs is far reaching as it enables transformation and agility at many levels. It deploys apps quickly, in a continuous way, which leads to a faster pace of delivery, enhancing the ability to create new and innovative experiences quickly.
The real opportunity of the API ecosystem lies in the ability to access and convert data into meaningful patterns that can attract customers, nurture employee relationships and improve digital experiences.
Within the first few weeks of the global crisis, the team at Mulesoft had already observed the impact that it was having on our stakeholders, communities and customers. We realize that important decisions had to be made, quickly, based on the data available—which was very fragmented then.
Companies from retail to healthcare have achieved major success through their open API approach, and we'll see a continuous uptake in this trend as businesses in other sectors begin to follow a similar strategy.
We built a COVID-19 data platform and created the Crisis Response Developer Portal, which includes carefully curated data and resources, which makes it easier to digest the data so that better decisions—such as a safe return to the workplace—can be made based on real-time information.
API-first platforms are designed to allow businesses greater freedom and flexibility, which is invaluable in times of crisis. They allow the transmission of data from system to system, creating connectivity and easy access to application data, device or cloud applications - like online shopping or buying a flight on your mobile device.
Brands like ASICS and Unilever have attested to the value of APIs in keeping pace with consumers' evolving expectations. Taking an API-led approach has successfully accelerated the execution of their respective ecommerce strategies, while removing bottlenecks and supporting line-of-business innovation.
Anypoint Platform redefines integrated systems that allows retailers to use APIs to better manage customer data, which enhances user experience by offering targeted personalisation. What would normally take months to build can now be completed in weeks, saving a lot of valuable time and resources.
This improved collaboration with the community enforces confidence and trust, and keeps customers coming back.
The pandemic has revealed the importance of digital transformation and preparedness, which enables business continuity during a crisis. An API management system will provide the right infrastructure to support the latest developments in technology that will remain critical for businesses to stay competitive in the new era.
10 Tips from the Real Estate Passive Income Playbook
Mike Koenigs
Entrepreneur Store
Innovation: How Banks and Businesses Can Fight Fraud and Chargebacks Should Regulation Fail
Monica Eaton
Copyright © 2023 Entrepreneur Media, Inc. All rights reserved.
Entrepreneur® and its related marks are registered trademarks of Entrepreneur Media Inc.
Successfully copied link

redpajama_set_name: RedPajamaCommonCrawl


text:
Q: QList, appending object, loosing static members I'm using building a QList in my object:
QList<clsXMLnode*> mlstChildren;

In my method to append a child node:
void clsXMLnode::appendChild(clsXMLnode* pobjChild) {
assert(pobjChild != NULL);
mlstChildren.append(pobjChild);
// ...

When I use the debugger to single step I can see that pobjChild has all the static data that it should have associated with it, however the node that is appended to 'mlstChildren' has none of the static members.  Using the debugger I can see the 'pobjChild' is still correct and 'mlstChildren' whilst it has the same pointer address for the child node, the contents of it do not match the contents of 'pobjChild', why?
Edit:
It seems to be a bug in the debugger, I modified my appendChild method as follows:
void clsXMLnode::appendChild(clsXMLnode* pobjChild) {
assert(pobjChild != NULL);
int intNewIdx = mlstChildren.length();
mlstChildren.append(pobjChild);
clsXMLnode* pobjCheck = mlstChildren.at(intNewIdx);
// ...

I can see in the debugger that the contents of pobjCheck matches the contents of pobjChild exactly and all static members are intact, but if I expand mlstChildren in the debugger, whilst the class address matches pobjChild, the contents of the static data does not.

A: This isn't really an answer, however I think I've proven that it is one of several ongoing bugs in the Qt Debugger, which I have reported to the Qt developers forum:
https://forum.qt.io/topic/82279/debugger-and-static-data


Gray Poly/Cotton Upholstery Deck Padding is used in upholstery as insulation between the base springs and decking. It's ¼" thick when compressed. Sold by the yard.
For decking and back on a couch that I am reupholstering.
It looked thin and like it would be easily stapled.
To cover the springs and metal strapping in an armchair with a wooden frame. Will also use deck cover material on top of this.
It will work better than burlap to cover to springs.
Recovering my couch, and this should work nicely for the decking.
Covering the woven deck of two antique chairs.
I chose it because i needed a cheap way to upholster my convention display boards, i'll be wrapping them in linen.
To put over the fill for my chair cushions.
Should this be washed before using?
BEST ANSWER: No..it is padding for under the "deck" fabric... deck fabric is usually what cushions for chairs and sofas "rest" on...The padding usually sits on top of springs or webbing. Hope this is helpful answer.
If it is being used as deck padding, it does not need to be washed prior to using.
Could this be used as padding on an ironing board?
This gray pad is perfect instead of the saggy burlap. Width is a little short but I double layered it and hand stitched to hold in place in my MCM chair. Wish the width was 36" is the only downside.


Mold in masonry - why can this be?
Our PC should be more beautiful: Although Case Modding is actually not one of the classic tasks of the handyman, here is plentytechnical precision and creativity asked.
Case modding is by no means limited to simple visual effects on the PC: even tangible technical Improvements in cooling and ventilation as well as in the usability can be achieved.
We give you a little insight into the fascinating world of case modding and a few suggestions for your home PC.
Acrylic glass is a highly sought-after material for case modders. The material, which is comparatively easy to process, can be processed and shaped using handyman tools. In addition, acrylic glass is deformable under the action of heat (thermoplastic).
Put one of the Floor or cover plates on an exactly flat surface, Then glue the Front and back with Plexiglas adhesive exactly flush at the back and front on the edge. A helper is useful here, alternatively, objects can be used to support the pages.
Below left and right are now, with a distance of exactly 0.8 mm to the edge, the two Plexiglas strips for screw mounting (see picture) glued. Now glue the Housing cover on top of the front and rear wall on. Then the two remaining strips are glued. The frame is now ready and should dry overnight.
To assemble the side covers, you must first four holes at a distance of one centimeter to the back wall and 0.5 cm to the lid drill into the four corners of the Plexiglas strips (see picture). Pay attention to the drilling depth: 10 mm are sufficient, use a stop.
Then be here with gentle pressure and something plexiglass adhesive the screw sleeves inserted. These must be glued exactly flush with the surface of the strips. Then you can test the two housing covers and mark the drill holes for the thumbscrews. These must then be set absolutely exactly. So go with extreme peace of mind and precision as well as a slowly rotating cordless drill and a sharp one 8mm plastic drill in front.
Then the knurled screws are screwed into the housing protected with a plastic washer - the plexiglas cube for your computer is already finished. If everything is sitting straight and has minimal clearances, you can now continue working on the Plexiglas PC.
To accommodate the motherboard must have a so-called Motherboard tray to be built in. This is usually screwed firmly in the right half of the housing to the bottom and lid. Since the specifications of the various motherboards are individual, we can not give any more details here. For fixing both screws and Plexiglas adhesive are recommended.
The Drive tray for 5.25 and 3.5 inch drives is mounted on the lid and front; corresponding openings must be sawn precisely in the front. Here also the power switch and the various operating status LEDs must be installed.
For a good one "Draft" in the housing can be attached to the Front also an additional fan to be assembled. This "scoops" cooling air into the housing, which is blown out by the rear fans again.
At the back of the housing now has an opening for the Panel connectors be sawn; after ATX standard their position is relatively the same for all motherboards. Also the Plug-in slots for the PCI cards are standardized. Here you can possibly take measurements and distances from an old ATX case. Also the openings for Case fan and power supply are now sawn into the back wall, openings for a PC lighting or LED holes should now be made.
Plexiglas can be easily and with "Home remedies" Engrave - ideal conditions for case modders who want to add a personal touch to their finished case. The engraving will be either freehand or from a template in the sandblasting process executed.
Engravings in Plexiglas can easily and with a little manual skill with a commercial Gravurset be executed. It should, however, to one low speed and short material contact be respected: Plexiglas tends to be at temperatures 100° C to thermal deformation and can melt on the surface. Special plastic engraving attachments are available on the market.
In more complicated processes engravings can also be transmitted by machine. Graphics created on the computer are in this case transferred to the material by a computer-controlled engraving head. However, this procedure is quite complex and can only be carried out professionally - for home users, the purchase of an engraving machine hardly worth.
When engraving with a sandblasting gun, any complex motifs can be transferred to the Plexiglas surface by means of a template. This will only one Sandblasting gun, a compressor and suitable masking material needed.
When carrying out the work, please note that theClose the template tightly with the Plexiglas surface and can not be destroyed by the blasting material; thick, coated cardboard or better plastic sheets are a good choice.
The remaining part of the Plexiglas disk must be very carefully covered to prevent scratches in the rest of the material. Again, sufficiently stable material should be used for masking; For example, tissue adhesive tape and dense cardboard.
Sandblasting should be done with fine-grained quartz sand be performed - in the best case in a blast cabin. Those who do not have such a device, sandblasting can also perform outdoors, for example, on a large meadow.In this case, it is absolutely necessary to wear protective goggles and a mask suitable for quartz sand - inhaled quartz sand dust is very harmful to your health!
After completion of the blasting process, the masking material can be removed. Sand residue should be blown off with compressed air - anything else can cause scratches. Now the motif is ready and can be installed in the mod PC.
Neon and cold cathode lamps have been popular with Case Modders since the very first hour of their hobby: in all the colors and shapes that neon lights are available in, Plexiglass PC cases or Plexiglas windows can be imaginatively illuminated.
Unfortunately, neon tubes have tangible disadvantages when installed in a PC: So they need a ballast, colloquially Neontrafo or NST called. This is quite clunky and must be operated with 230 V voltage; a connection to the PC power supply is therefore not possible. In addition, neon tubes and ballasts are not cheap; certainly not in individual forms. Also, the glass tubes are prone to breakage and heat up in operation.
The advantages lie in a rich and warm light radiation and the individuality of the design possibilities. For demanding Casemods therefore also on neon tubes is used.
Cold cathode tubes are used billions of times as backlighting of the displays of notebooks, monitors and flat screen televisions. They are also used in scanners and fax machines.
With low voltage, low power consumption and correspondingly little waste heat However, functioning luminaires have also been used for years in case modding: With special adapters, they can be connected to the existing computer power supply with an inverter and have a power consumption of approximately 5 watts at 30 cm Length.
In a PC can therefore also several Cold cathode tubes operate in different colors. They create such a beautiful play of light and consume on top of that little power.
LEDs are also used in normal computer cases as a status indicator. In case modding, however, banal PC parts only really come into their own when they are illuminated with LEDs.
A good example is the adjoining fan, which becomes an eye-catcher with blue LED lighting. Equipped with a controller, LEDs can also conjure up entire plays of light in or on the PC.
Modern PCs are small power plants - also as far as the noise level is concerned. The ever more powerful components set in High-end PCs convert up to 30 percent of their electrical power into heat.
This is not only inefficient, but also very loud: Electric fans in the housing, the warm air must be transported outside. But hard disks, CD and DVD drives and the power supply contribute to the noise from the computer.
A PC usually has a metal housing that acts as a resonator in time with the vibration of hard disks and fans. A large part of the operating noise comes thus only from the sound amplifying effect of the housing.
One can with so-called "Silencing mats" Counteracting bitumen: Available in every DIY store, they are actually intended for use in the automotive industry, but they can also be easily adapted to complicated mounting positions with a hot air dryer and cutter.
By using a Festplattenentkopplers Further noise can be reduced: Hard disks operate at speeds above 10,000 rpm and get into vibration during the scanning process. These are transferred to the housing during rigid installation methods. With a hard disk decoupler, the direct connection between the case and the hard disk is interrupted by rubber - now nothing drones anymore.
In many finished PCs from the electronics discounter, although good components for the computing power are installed on fans and housing but saved. A whole lot of noise can be alone through the Replacing the case fans and power supply to reach.
High-quality, noise-optimized case fans can automatically adjust their speed to the internal temperature and the load of the PC. Also the simpler variant, the Setting the speed by means of a switch on the fan, brings relief: The optimum setting is reached when the internal temperature in the housing no longer increases with the gradual increase in speed.
The comparison with the automotive industry shows that air cooling with blowers is simple and quite effective, but also very loud. So a modern middle-class car is significantly quieter than a VW Beetle from Wirtschaftswundertagen.
The processor cooling, with high-performance PCs also the cooling of the graphics processor (GPU), is one of the main noise factors in the computer case: Small, cheap fans annoying here with high speeds and a sound that reminds rather of a bad bee than a PC.
To offer a way out of this problem Passive coolers: These dissipate the heat over as large a radiating surface as possible, are heavily ribbed and often have so-called "heat pipes", which additionally dissipate heat in the housing air. The disadvantage of these coolers, especially the price and space requirements: the better the cooling performance, the larger and more expensive the device. For small enclosures a real argument.
A useful combination offers the commonly used "Hybrid solution": A relatively large heat sink is installed with a slower rotating, large fan. Thus, even at low fan speeds sufficient cooling is achieved, the system is also cheaper and significantly more space-saving.
As mentioned at the beginning, PCs today are small power plants: power supplies with 800 watts of power consumption are no longer a rarity. So that the voltage converter gets enough air, most of the power supplies have large or multiple small fans installed.
In any case, low-cost manufacturers try to save on these: If too few fans are present, simply the speed is increased. The result is a pesky hum.
With the Replacing the power supply with a high-quality model with a well-mounted, slow-rotating and large fan In terms of noise reduction is usually already much won.
Everything about the theme of stretcher and canvas itself, art print on stretcher and design ideas for the canvas can be found on this page.
➤ current e-bike comparison 2018 on lets-rebuild.com. Compare now and order the best e-bike online!
➤ current treadmill comparison 2018 on lets-rebuild.com. Compare now and order top treadmill online!
Salt dough recipes for great crafting fun: make salt dough, knead and bake. Large collection of templates and ideas for crafting salt dough.
Bobbins for beginners and advanced: collection with instructions for bobbin lace and free bobbin lace.


"THE SOURCE FITNESS – FEBRUARY" Contest (the "Contest") is run by The Source (Bell) Electronics Inc. (the "Administrator") and will take place in all Canadian provinces and territories from February 5, 2019 at 12:01 a.m. (ET) to February 15, 2019 at 11:59 p.m. (ET) (the "Contest Period".
For the purposes of the Contest, the "Contest Group" is composed of the Administrator, together with franchisees, advertising and promotion agencies, suppliers of material and services related to the Contest, and any other corporation, partnership, sole proprietorship or other legal entity to the benefit of which this Contest is held, as well as their respective officers, directors, employees, agents, and other representatives.
(b) have reached the age of majority in their province of residence as of the date of entering the Contest.
Employees, agents and other representatives of the Contest Group, as well as any person with whom they reside, are not eligible to enter the Contest.
4.1. Method One – Provide your email address: You may enter the Contest by registering to receive promotional emails from The Source. You will then obtain one (1) entry into the Contest. There is a limit of one entry per entrant during the Contest Period. Any entrant may use only one (1) email address to enter the Contest.
4.2. Method Two – Mail-in entry/No purchase necessary: You may enter the Contest without purchase or without giving us your email address by mailing an original handwritten letter, at least fifty (50) words in length, explaining your reason for entering the Contest along with your full name (including middle initial), address (including postal code), age and daytime telephone number (including area code) to: "The Source Xbox" Contest, c/o Nancy Pickard, 279 Bayview Drive, Barrie, Ontario, L4M 4W5. To be eligible for the Contest, mailed entries must be postmarked by no later than the end of the Contest Period and received within three (3) days from the end of the Contest Period. Mailed entries are subject to the same entry conditions, eligibility requirements and other terms and conditions applicable to other entries. One mailed entry per envelope with sufficient postage.
Prize(s): There is one (1) prize available to be won valued at $449.98 CAD. The prize consists of one (1) FitBit Charge 3 Activity Tracker (retail value $199.99 CAD), and one (1) Powerbeats3 Wireless Earphones (retail value $249.99 CAD).
On February 21, 2019 at 10:00 a.m. (ET) in Barrie, Ontario at the offices of the Administrator, one (1) entry will be randomly drawn from all entries received during the Contest Period.
(c) Sign and have witnessed the declaration and release documentation and return it to the address indicated in the documentation for it to be received within three (3) days following its delivery by the Administrator or its representatives.
8.2. Disqualification:If any one of the conditions mentioned in the Rules is not met, the selected entrant will be disqualified and shall not be entitled to receive any prize, and the Administrator reserves the right, in its sole and absolute discretion, to select at random another eligible entrant as a potential prize winner or to cancel the prize.
8.3. Delivery of Prize(s):Following receipt of the selected entrant's signed declaration and release documentation, the Administrator or its representatives will send the prize(s) to the winner(s)]. Please allow two (2) to four (4) weeks for delivery.Shipped prize(s) shall not be insured and the Administrator shall not assume any liability for lost, damaged or misdirected prize(s).
9.1. Verification of Entries:The validity of any Entry is subject to verification by the Administrator. Any entries that are illegible, incomplete, fraudulent or otherwise non-compliant with the Rules, will be disqualified. Any entrant or other individual who enters or attempts to enter the Contest in a manner that is contrary to these Contest Rules or that is otherwise disruptive to the proper operation of the Contest or by its nature is unjust to other entrants or potential entrants will be disqualified. All decisions made by the Administrator or its representatives, including without limitation those concerning the eligibility or disqualification of entrants, are final and binding without right of appeal. All entries become the property of the Administrator and none will be returned.
9.2. Acceptance of Prizes:All prizes must be accepted as described in these Contest Rules and cannot be returned, transferred to another individual, substituted for another prize or exchanged in whole or in part for money, except as set out in Rule9.3.
9.3. Substitution of Prizes:The Administrator reserves the right, in its sole and absolute discretion, and for any reason whatsoever, to substitute for any prize, or part thereof, another prize of equivalent or greater value, including, without limitation, a cash award.
9.4. Number of Prizes/Winners:By entering the Contest, each entrant acknowledges that the Administrator shall not be required under any circumstances to award more prizes than the number of available prizes, as set out in these Contest Rules. In the event that, for any reason whatsoever (including, without limitation, as a result of an error, malfunction or defect in the design, advertising, management, implementation or administration of the Contest, whether mechanical, electronic, human or otherwise) the number of declared winners or the number of prizes claimed by entrants is greater than the number of prizes available, the Administrator reserves the right, in its sole and absolute discretion, to end the Contest in whole or in part, without notice, subject only to the prior approval of theRégie des alcools, des courses et des jeux, if required, in respect of the Province of Quebec, and to award the correct number of prizes among the correct number of winners, selected in accordance with these Contest Rules from among those entries validly submitted prior to the termination of the Contest.
9.5. Other Changes to Contest Rules:Without limiting the provisions of Rule9.4;above, the Administrator reserves the right, in its sole and absolute discretion, to modify, cancel, terminate or suspend the Contest, in whole or in part, in the event of any cause or circumstance, including, without limitation, any virus, computer bug or unauthorized human intervention or any other cause that is beyond the control of the Administrator, that could corrupt or affect the administration, security, impartiality or normal course of the Contest, subject to, in respect of the Province of Quebec, the approval of theRégie des alcools, des courses et des jeux du Québec.
(a) By the Entrants:By entering or attempting to enter the Contest, each entrant and/or purported entrant agrees:(i)to release, discharge, and forever hold harmless the Contest Group and their shareholders from any and all claims, actions, damages, demands, manner of actions, causes of action, suits, debts, duties, accounts, bonds, covenants, warranties, indemnities, claims over, contracts and liabilities of whatever nature or kind arising out of, or in connection with the entrant's participation or attempted participation in the Contest, compliance or non-compliance with these Contest Rules and acceptance and use of the prize. Any entrant selected for a prize acknowledges that upon awarding of the prize, the obligations typically borne by the provider of services or goods become that provider's responsibility; and(ii)if selected as a potential winner, to sign the declaration and release documentation (see Rule8.1) in this regard before receiving his/her prize. The Contest Group and their shareholders will not be responsible for lost, incomplete, late or misdirected entries or for any failure of the Contest website, if applicable, during the Contest Period, or for any technical malfunction or other problems with, any telephone network or lines, computer on-line systems, servers, access providers, computer equipment or software or for any technical problems or traffic congestion on the Internet or at any website, or any combination of the foregoing, and will not be liable for any resulting death, injury or damage to any person or property arising from, or relating to, that person's or any other person's participation or attempted participation in the Contest. Any attempt to deliberately damage any website or to undermine the legitimate operation of this Contest is a violation of criminal and civil laws and, should such an attempt be made, the Administrator reserves the right to seek remedies and damages to the fullest extent permitted by law, including criminal prosecution.
9.7. Name/Image of Winners:By entering the Contest, each winner authorizes the Administrator and its advertising and promotional agencies and their respective employees or other representatives to broadcast, publish and otherwise use his or her name, photograph, image, statements regarding the Contest or any prize, place of residence and (or) voice for publicity purposes, without any form of remuneration.
9.8. Dispute – Québec Residents:Any litigation respecting the conduct or organization of a publicity contest may be submitted to theRégie des alcools, des courses et des jeuxfor resolution. Disputes about the awarding of a prize may be submitted totheRégieonly forthe purpose of helping the parties reach a settlement.
9.9. Email Consent:By providing the entrant's legitimate email address as a method of entering the Contest, the entrant agrees that Bell Mobility, Bell Canada, Bell ExpressVu, Bell Media, Bell Aliant, The Source and their affiliates ("Bell") can send the entrant communications via electronic means, which will include information that may be of interest to the entrant regarding Bell's products and services and the products and services of Bell's third-party marketing partners. If at any time the entrant wishes to stop getting such communications, the entrant can visit bell.ca/communicationpreferences or contact Bell by mail at the Corporate Secretary's Office at 1 Carrefour Alexander-Graham-Bell, Building A-7, Verdun, Quebec, H3E 3B3 (Attention: CASL).
9.10. Personal Information:Unless the entrant has otherwise authorized the Administrator or another entity related to the Contest to contact him or her, the personal information gathered about entrants in connection with this Contest will be used solely for the administration of the Contest and is subject to The Source's privacy policies (available athttps://www.thesource.ca/privacy) and no communication unrelated to the Contest, commercial or otherwise, will be sent to the entrant by the Administrator. Any inquiry concerning the personal information held by the Contest Sponsor should be addressed to Privacy Officer, The Source (Bell) Electronics Inc., 279 Bayview Drive, Barrie, Ontario, L4M 4W5.
9.11. Identity of the Entrant:For the purposes of these Contest Rules, the entrant is the person who is the holder of the e-mail account submitted in the entry form.It is to this individual that the prize will be awarded if selected and declared as the winner.