Fiber

Kevlar properties Chemical make-up Kevlar is a weaved fibre known as poly-paraphenylene terephthalamide. Kevlar is part of the aramid family. (Kevlar-The Super Tough Fiber)Aramid chemical name is aromatic polyamide. Aramids was the first organic fibre to reinforce advanced composites. The reason being it strength, and tensile modulus was high enough to be used in advance composites. The fibre mechanical properties of an aramid are higher then most materials like steel and glass fibres if…

Centriole (E) Their structure is a small network of protein fibers which are not surrounded by a membrane but are located in an area of the cell called the centrosome. The centriole has its appearance and structure the way it is because its arrangements must be a circular and the triplet fibers that it’s made out of will eventually create a shape that is similar to a barrel when it it is arranged. One of their main function is to contribute/help with processes that involve cellular activities.…

Cross Checking Information, Always a Good Idea With the increase in the availability of information on nutrition it is sometimes hard to know if the information is up to date or even valid. Even trusted sources sometimes need to be questioned. In 1993 Marrion Nestle head of the department of nutrition at New York University expressed his concern by stating “ Every single dietary intake survey…

Marie-Pierre St-Onge, PhD, assistant professor in the department of medicine and Institute of Human Nutrition at Columbia University Medical Center in New York, N.Y., ran the study and was surprised at how a greater fat and sugar intake and less fiber affected sleep. The tests were taken on 26 adults, 13 male and 13 female, all normal weight and around the same age of 35. The entire study only lasted 5 nights in a sleep lab. All of the adults were given fixed meals administered by a nutritionist…

pain that does not respond to oral medications. This block can also be indicated if the side effects for a pain relieving medication are unacceptable to the patient. Since the superior hypogastric plexus contains efferent sympathetic fibers to and afferent pain fibers from the bladder, urethra, uterus, vagina,…

Tasty, attractive and highly ritualized in our culture, wine and other alcoholic beverages are approved for responsible use despite the fact that alcoholism and attendant problems are a plague, while responsible use of a weed that, at worst, makes people boring and hungry, is criminal,” (Parker, 2007). Many people find it hard to believe that the United States government has fought so hard to keep marijuana illegal. Especially since marijuana remains one of the most popular recreational drugs…

Introduction Bench Press Exercise: The bench press is a key exercise in strength and conditioning programs. It is one of the most popular exercises amongst competitive and recreational athletes. The bench press commonly measures and evaluates upper-body strength, muscle-mass, power and, in some cases, muscular endurance. The lift is typically performed lying supine on a bench using a barbell. There are several variations of the bench press exercises to include the wide-grip bench press,…

Neuroscientists at the John Hopkins University School of Medicine were able to determine that a group of cells found in the adult brain remain highly active by transforming into insulating nerve fibers. These nerve fibers then formed scars that contributed to tissue repair when they were artificially inserted into a group of mice. Their work brings to light how these multifunctional cells communicate with one another in the central nervous system (CNS), also known as the brain and spinal cord.…

This causes the release of acetylcholine in the vesicles into neuromuscular junction. Acetylcholine is an excitatory neurotransmitter that binds to the acetylcholine receptors on the muscle, This opens the sodium channels that depolarize the muscle fiber. Depolarization of the muscle continues along the membrane and then down into the T-tubules, which is continuous with muscle fiber’s membrane. The depolarization activates dihydropyridine receptors on T-tubule and causes calcium release from the…

failure to use state required tests while conducting analysis and falsifying records. As the investigation continued, more issues were discovered stemming from previous employees and management. Veeder failed to conduct state required tests during fiber analysis and successfully hid it for many years. Poor training prior to obtaining his position was the basis for his reasoning. An individual employee has an ethical responsibility to the company for which they work for, to provide the best work…