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Some molecules or conditions are exclusively toxic to biological systems and classified as being non-essential; others are essential for life. Nevertheless, above certain threshold even the essential will become toxic. Tightly controlled homeostatic control mechanisms are thus vital drivers of well being, longevity and survival. The identification and characterization of these intricate pathways form the foundations of Toxicogenomics. The initiation, and indeed completion, of numerous non-mammalian genome-sequencing projects, has driven the exponential growth of available genetic sequences. Collating this vast amount of data into functional and mechanistically meaningful units will provide n...
Written by a scientist and researcher with more than 25 years of experience in the field, this serves as a complete guide to catalyst activity loss during the hydroprocessing of heavy oils. Explores the physical and chemical properties of heavy oils and hydroprocessing catalysts; the mechanisms of catalyst deactivation; catalyst characterization by a variety of techniques and reaction conditions; laboratory and commercial information for model validations; and more Demonstrates how to develop correlations and models for a variety of reaction scales with step-by-step descriptions and detailed experimental data Contains important implications for increasing operational efficiencies within the petroleum industry An essential reference for professionals and researchers working in the refining industry as well as students taking courses on chemical reaction engineering
Many English language learners (ELLs) require extra support to become successful writers. This book helps teachers understand the unique needs of ELLs and promote their achievement by adapting the effective instructional methods teachers already know. Engaging and accessible, the book features standards-based lesson planning ideas, examples of student work, and 15 reproducible worksheets, rubrics, and other useful materials. It describes ways to combine instruction in core skills with ample opportunities to write and revise in different genres. Invaluable guidance is provided for assessing ELLs' writing development at different grade levels and language proficiency levels.
Many oil refineries employ hydroprocessing for removing sulfur and other impurities from petroleum feedstocks. Capable of handling heavier feedstocks than other refining techniques, hydroprocessing enables refineries to produce higher quality products from unconventional- and formerly wasted- sources. Hydroprocessing of Heavy Oils and Residua
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