Look through 570 acronyms and abbreviations related to Veterinary: AAAP: Asian-Australasian Association of Animal Production Societies : AAAP The hot wet air leaves the top of the hopper and is first run through an after-cooler, because it is easier to remove moisture from cold air than hot air. Whinfield, John Rex and Dickson, James Tennant (1941) "Improvements Relating to the Manufacture of Highly Polymeric Substances", UK Patent 578,079; "Polymeric Linear Terephthalic Esters", Wyeth, Nathaniel C. "Biaxially Oriented Poly(ethylene terephthalate) Bottle", NPCS Board of Consultants & Engineers (2014) Chapter 6, p. 56 in, Gupta, V.B. The majority of the world's PET production is for synthetic fibres (in excess of 60%), with bottle production accounting for about 30% of global demand. Detailed evaluation of dynamic internal features is feasible with this technique. Spinning non-woven—in the fine titer field for textile applications as well as heavy spinning non-woven as basic materials, e.g. Note: We have 250 other definitions for PET in our Acronym Attic. Drying is achieved through the use of a desiccant or dryers before the PET is fed into the processing equipment. PET has been used with fludeoxyglucose F 18 to identify and localize regional lymph node metastases and to help assess response to therapy. The second transesterification step proceeds at 270–280 °C, with continuous distillation of ethylene glycol as well. ACT – activated clotting time. The particle size distribution of impurities is very wide, the big particles of 60–1000 µm—which are visible by naked eye and easy to filter—representing the lesser evil, since their total surface is relatively small and the degradation speed is therefore lower. Is this a result of a pet allergy or did I just come down with a cold? PET was patented in 1941 by John Rex Whinfield, James Tennant Dickson and their employer the Calico Printers' Association of Manchester, England. Mechanical recycling or direct circulation of PET in the polymeric state is operated in most diverse variants today. Return to: Medical Student Instruction Below is a list of abbreviations that you may see while rotating on the otolaryngology service: ABR: auditory brainstem response; ACC: adenoid cystic carcinoma Cost-efficiency can already be achieved with plant capacities within a range of 5000–20,000 tons/year. These kinds of processes are typical of small and medium-size industry. This process is accelerated by ultraviolet light. Abbreviations Commonly Used in Obstetrics and Gynecology Physical Examination V/V Vulva/Vagina BUS Bartholin’s glands, urethra, Skene’s gland Compressed air dryers do not reuse drying air. Computed tomographic (CT) images that are obtained as the CT table moves continuously during a single, held breath. PET consists of polymerized units of the monomer ethylene terephthalate, with repeating (C10H8O4) units. It makes a good gas and fair moisture barrier, as well as a good barrier to alcohol (requires additional "barrier" treatment) and solvents. I also came down with a sore throat and a bad cough. Inside the dryer, hot dry air is pumped into the bottom of the hopper containing the resin so that it flows up through the pellets, removing moisture on its way. abscess. PET, like many plastics, is also an excellent candidate for thermal disposal (incineration), as it is composed of carbon, hydrogen, and oxygen, with only trace amounts of catalyst elements (but no sulfur). MSD and the MSD Veterinary Manual Merck & Co., Inc., Kenilworth, NJ, USA (known as MSD outside of the US and Canada) is a global healthcare leader working to help the world be well. High-speed spinning processes for the manufacture of POY normally need a viscosity of 0.62–0.64 dℓ/g. PET preform for injection stretch blow moulding of a bottle. Results are decreased reactivity during re-polycondensation or re-SSP and broadening the molecular weight distribution. POSITRON EMISSION TOMOGRAPHY: PET SCAN revealing lung cancer. Recycled materials are increasingly introduced into manufacturing processes, which were originally designed for new materials only. Color-conferring dyes can easily be formulated into PET sheet. A PET scan uses a radioactive drug (tracer) to show this activity. The main degradations that can occur are hydrolytic, and probably most important, thermal oxidation. What does PET stand for in Medical? My nose plugged and I had to blow almost constantly. In some cases, the modified properties of a copolymer are more desirable for a particular application. Pharmacology and Experimental Therapeutics (journal) PET. After purification, the monomers can be used to prepare new polyethylene terephthalate. By using several different radionuclides, researchers can measure regional cerebral blood flow, blood volume, oxygen uptake, and glucose transport and metabolism, and can locate neurotransmitter receptors. Therefore, efficient sorting, separation and cleaning processes become most important for high quality recycled polyester. [23] A positron emission tomography (PET) scan shows how organs and tissues are working. Water is eliminated in the reaction, and it is also continuously removed by distillation:[19]. [14], PET in its natural state is a colorless, semi-crystalline resin. After manufacturing, a detectable amount of antimony can be found on the surface of the product. See copolymers, above. List page number 2 Thus, the resin can be plastically formed at lower temperatures and/or with lower force. PET is commonly recycled, and has the number "1" as its resin identification code (RIC). The reactions are simply the reverse of those used in production. Medical professionals for humans instead use the term qd (an abbreviation for quaque die). The name Terylene was formed by inversion of (polyeth)ylene ter(ephthalate) and dates to the 1940s. Both amorphous PET and BoPET are transparent to the naked eye. In dimethyl terephthalate(DMT) process, this compound and excess ethylene glycol are reacted in the melt at 150–200 °C with a basic catalyst. A positron emission tomography (PET) scan is an imaging test that helps reveal how your tissues and organs are functioning. In this way, fiber waste is directly reused to produce fiber, preform waste is directly reused to produce preforms, and film waste is directly reused to produce film. With the exception of renal tomography most tomographic procedures have been replaced by computed tomography (CT). It may also be referred to by the brand names Terylene in the UK,[5] Lavsan in Russia and the former Soviet Union, and Dacron in the US. A method for determining the bone mineral density of a three-dimensional bony specimen, e.g., in the vertebral bodies or the forearms. PET is subject to various types of degradations during processing. This scattering means that crystalline PET is opaque and white in most cases. PET has a resin identification code of 1. abrasion. Synonym: Computed tomographic scanning that uses the inert gas xenon to improve the visual distinction between healthy and abnormal tissues, esp. There is considerable use of data from the attenuation coefficients in diagnosis. In view of technology there is not just one way to do it. Pre-eclamptic toxaemia (PET) is also called Toxemia of Pregnancy or pregnancy induced hypertension. The ester bonds in polyethylene terephthalate may be cleaved by hydrolysis, or by transesterification. This procedure is known as solid-state crystallization. In dam's the ability to conceive and carry a litter. At room temperature the molecules are frozen in place, but, if enough heat energy is put back into them by heating above Tg, they begin to move again, allowing crystals to nucleate and grow. Abbreviation for positron emission tomography. Introduction. This interferes with crystallization and lowers the polymer's melting temperature. Terylene (a trademark formed by inversion of (polyeth)ylene ter(ephthalate)) is also spliced into bell rope tops to help prevent wear on the ropes as they pass through the ceiling. [citation needed], "PETE" redirects here. Recently, molecular level stabilization of the material using nanostructured chemicals has also been considered. Increase of by-products content such as acetaldehyde, formaldehyde, Increase of extractable foreign contaminants, Decrease of crystallization temperature and increase of crystallization speed, Decrease of the mechanical properties like tensile strength, elongation at break or, Broadening of molecular weight distribution, Product selection and separation by quality, This page was last edited on 7 November 2020, at 06:34. to visualize blood flow to different regions of the brain in stroke. Aluminized Mylar ballons filled with helium. The technique minimizes patient movement artifacts and decreases scanning times to about 50 to 100 msec. for roof covers or in road building—can be manufactured by spinning bottle flakes. The scan uses … A colony of I. sakaiensis can disintegrate a plastic film in about six weeks.[25][26]. 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