maintain contamination
71Car wash — For other uses, see Car wash (disambiguation). Studio City Hand Car Wash, Studio City, California A car wash (also written as carwash ) or auto wash is a facility used to clean the exterior and, in some cases, the interior of motor vehicles …
72Wilderness and diarrhea — Diarrhea acquired in the wilderness, sometimes calledWilderness diarrhea (WD), wilderness acquired diarrhea (WAD) or backcountry diarrhea, and is a much discussed hazard among backpackers, hikers, campers and other outdoor recreationalists who… …
73Parts cleaning — is essential to many industrial processes, as a prelude to surface finishing or to protect sensitive components. Electroplating is particularly sensitive to part cleanliness, since molecular layers of oil can prevent adhesion of the coating. ASTM …
74Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… …
75Mercury (element) — gold ← mercury → thallium Cd ↑ Hg ↓ Cn …
76Egg (food) — Chicken egg redirects here. For the causality dilemma, see Chicken or the egg. On the left a chicken egg, the egg most commonly e …
77literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …
78Health and Disease — ▪ 2009 Introduction Food and Drug Safety. In 2008 the contamination of infant formula and related dairy products with melamine in China led to widespread health problems in children, including urinary problems and possible renal tube… …
79performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
80building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
