For building facades, roofing, and other applications for sheet metal formed by deep drawing, roll forming, or bending, zinc alloys with titanium and copper are used. Unalloyed zinc is too brittle for these manufacturing processes.As a dense, inexpensive, easily worked material, zinc is used as a lead replacement. In the wake of lead concerns, zinc appears in weights for various applications ranging from fishing to tire balances and flywheels.Cadmium zinc telluride (CZT) is a semiconductive alloy that can be divided into an array of small sensing devices. These devices are similar to an integrated circuit and can detect the energy of incoming gamma ray photons. When behind an absorbing mask, the CZT sensor array can determine the direction of the rays. Other industrial uses
Roughly one quarter of all zinc output in the United States in 2009 was consumed in zinc compounds; a variety of which are used industrially. Zinc oxide is widely used as a white pigment in paints and as a catalyst in the manufacture of rubber to disperse heat. Zinc oxide is used to protect rubber polymers and plastics from ultraviolet radiation (UV). The semiconductor properties of zinc oxide make it useful in varistors and photocopying products. The zinc zinc-oxide cycle is a two step thermochemical process based on zinc and zinc oxide for hydrogen production.Zinc chloride is often added to lumber as a fire retardant and sometimes as a wood preservative. It is used in the manufacture of other chemicals. Zinc methyl (Zn(CH3)2) is used in a number of organic syntheses.
A paraumbilical (or umbilical) hernia is a hole in the connective tissue of the abdominal wall in the midline with close approximation to the umbilicus. If the hole is large enough there can be protrusion of the abdominal contents, including omental fat and/or bowel. These defects are usually congenital and are not noticed until they slowly enlarge over an individuals life time and abdominal contents herniate through the hole creating either pain or a visible lump on the abdominal wall. If abdominal contents get incarcerated (or stuck) in the hole this can cause pain. If the abdominal contents become strangulated by losing their blood supply from pinching or twisting those tissue will die. If it is omental fat this will cause pain and could potentially lead to an infection. If the strangulated contents are bowel then in addition to pain the individual will develop a bowel obstruction. And if the dead bowel is not surgically removed in an emergent fashion the condition could be fatal. Treatment
There is no medical treatment to cure a hernia. It requires surgical intervention which involves closing the hole. If the hole is very small this can sometimes be accomplished by simply reapproximating the connective tissue. However for best long term success most hernias require a permanent barrier to cover the defect much like repairing a hole in a tire. This material is commonly referred to as mesh and can be made of different substances depending on the brand.