filtration degree
121Silicon dioxide — Silica redirects here. For other uses, see Silica (disambiguation). Silicon dioxide …
122YMCA — The Young Men s Christian Association ( YMCA or the Y ) was founded on June 6, 1844 in London, England, by a young man named George Williams. At the time, the organization was dedicated to putting Christian principles into practice, as taught by… …
123Blood transfusion — Intervention Plastic bag containing packed red blood cells in citrate, phosphate, dextrose, and adenine (CPDA) solution …
124Wetland — For other uses, see Wetland (disambiguation). The Florida Everglades massive wetland system in the United States saw 1.7 billion gallons of fresh water flushed from it daily and pumped into the ocean following one of the most successive water… …
125Appropriate technology — (AT) is technology that is designed with special consideration to the environmental, ethical, cultural, social and economical aspects of the community it is intended for. With these goals in mind, AT typically requires fewer resources, is easier… …
126T-54/55 — Infobox Weapon name= T 54/55 caption= Polish T 55A, Poznań Citadel Museum of Arms () origin= Soviet Union type= Main battle tank is vehicle= yes is UK= yes service= 1947–present used by= wars= designer= Morozov (T 54), OKB 520 (T 54A and later)… …
127Indoor air quality — (IAQ) is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. IAQ can be affected by microbial contaminants (mold, bacteria), gases (including… …
128Aramid — fibers are a class of heat resistant and strong synthetic fibers. They are used in aerospace and military applications, for ballistic rated body armor fabric, and as an asbestos substitute. The name is a shortened form of aromatic polyamide .… …
