"Distillative separation, particularly of thermolabile volatile substances, is often associated with a significant reduction in quality due to the thermal degradation of the substances being distilled. For example, many substances containing plant matter, such as essential oils, can scarcely be dist.....
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Shallow wells dug to trap rain water, to be used for irrigation and for domestic use.Wells are 80 feet in diameter.
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"Weed infestations cause considerable crop yield losses worldwide. C4 weeds like Black-Grass, Cleavers, Green foxtail, Kochia and Barnyard Grass reduce yields of important C3 cereals such as rice, wheat, barley and oat. For example, Barnyard Grass, the most important weed species in rice, which is n.....
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An improved photoimagable cationically polymerizable epoxy based solder mask is provided that contains a non-brominated epoxy resin system and from about 0.1 to about 15 parts, by weight per 100 parts of resin system, of a cationic photoinitiator. The non-brominated epoxy-resin system has solids tha.....
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