1,3-Butadiene is a chemical made from the processing of petroleum. It is the 36th highest volume chemical produced in the United States. It is a colorless gas with a mild gasoline-like odor. About 75% of the manufactured 1,3-butadiene is used to make synthetic rubber.
Chemical composition of plant silica phytoliths SpringerLinkJan 11, 2013 · Silica phytoliths are a subgroup of biogenic opal. Silica phytoliths are formed in many plant species and remain preserved in soil and sediments after plant decay. The chemical composition of fossil phytoliths may reveal ancient plant taxa, soil composition and climate. However, actually detailed knowledge on silica phytolith composition is scarce.
Apr 25, 2005 · The composition of propolis varies according to the plants that can be found in a specific region (Ghisalberti, 1979; Markham et al., 1996). The constituents of propolis vary widely due to climate, season, location and year, and its chemical formula is not stable (Ghisalberti, 1979; Cheng and Wong, 1996). The most important pharmacologically
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Vesicular Mare Basalt15556 DRAFT Vesicular Mare Basalt 1542.3 grams Figure 1:Photo of 15556,0. Largest vesicles are about 6 mm. NASA S87-48187. Introduction . 15556 was collected about 60 meters from the edge of
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