Polymer Fuel Cells
Polymer fuel cells operate at a much lower temperature than traditional fuel cells used as power supply.
Polymers
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Polymer: A natural or synthetic chemical structure where two or more like molecules are joined to form a more complex molecular structure (e.g. polyethylene in plastic).
polymerase chain reaction(PCR)
Technique by which specific DNA segments are amplified selectively using cycles of annealing, chain extension, and thermal dissociation.
After [9] ...
polymer A chemical formed by the union of many monomers (a molecule of low molecular weight). Polymers are used with other chemical coagulants to aid in binding small suspended particles to larger chemical flocs for their removal from water.
Polymer: Natural or synthetic chemical compounds composed of up to millions of repeated linked units, each of a relatively light and simple molecule ...
rna polymerase An enzyme that catalyzes the synthesis of rna in transcription. See ribonucleic acid.
rodenticide Any substance or chemical used to kill or control rodents.
roentgen (R) A unit of exposure to ionizing gamma radiation in air.
a polymer suspension used as the standard for turbidity.
formazin nephelometric unit (FNU)
an industry standard unit measurement used in the European Union, equivalent to NTU.
One of many high-polymeric substances, including both natural and synthetic products, but excluding rubbers. At some stage in its manufacture every plastic is capable of flowing, under heat and pressure, if necessary, into the desired final shape ...
Cellulose A complex polymer of glucose molecules. The fundamental cell wall constituent in all green plants. Census In ecology, an attempt to count every member of a population.
Fluorinated polymers may not be a household name, but they show up in a lot of household products-from microwave popcorn bags and fast-food wrappers to stain-free carpets and windshield washer fluid.
Health risks from high concentrations of vinyl chloride (not the polymer) include liver cancer and lung cancer, as well as cancer of the lymphatic and nervous systems.
Bag filter
textile or sintered polymer filters used to remove dust and fume particles from gas streams. Used also on liquid waste to provide a final polish or remove floc particles ...
DBP-Dibutyl phthalate, used in the manufacture of cellulose polymers, adhesives, inks and caulking. Also used in small amounts in cosmetics and nail polish.
DEP-Diethyl phthalate used in cosmetics and nail polish and as a solvent.
PHOTODEGRADABLE A process where ultraviolet radiation degrades the chemical bond or link in the polymer or chemical structure of a plastic. See also: Degradability.
PL Plastic, all grades.
PM Precious metals.
A colorless, volatile liquid with a sweet, mild smell. It is an intermediate in production of vinylidene polymer plastics like SARAN, and is an irritant to the skin and mucous membranes. It is a Group C, probable human carcinogen.
Purge-and-Trap (P&T): Analytical technique (device) used to isolate volatile (purgeable) organics by stripping the compounds from water or soil by a stream of inert gas, trapping the compounds on an adsorbent such as a porous polymer trap, ...
While this makes it good for use in cooler temperatures, double bonds can allow polymerization, leading to the formation of lacquers and possibly blockage and damage to engine or fuel train components.
humus high-molecular-weight organic molecules, polymeric, derived mostly from plant decay; humic acids with the COOH radical; humolimnic acids in lake waters and sediments ...
Plastics are typically polymers of high molecular weight, and may contain other substances to improve performance and/or reduce costs.
 See also: Environment, Organic, Environmental, Waste, Toxic
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