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Throughout the world many projects have been underway to investigate the conversion of renewable biomass into energy and synthetic fuels by thermo chemical methods such as combustion, pyrolysis, gasification and lique faction. While many of these represent prior art used during the early 20th century, the recent decade since the 1970s oil shock has immeasurably increased the knowledge base for such processes. Much of the new knowledge has been gained by persons who were not trained in classical wood chemistry and there have not yet been many attempts to synthesize the knowledge into a corpus of systematic information. To bring this about the International Energy Agency's Forestry Energy coll...
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Photosynthesis : the light reaction -- Carbon dioxide fixation -- Storage and utilization of fixed carbon -- Primary cell walls -- Nitrogen and sulfur metabolism -- Lipids -- Isoprenoid compounds (terpenes) -- Aromatic and phenolic compounds -- Alkaloids -- Plant peptides and proteins.
The utilization of polymers in medicine has become a reality in the last decade. This book is a concise presentation of the fundamentals, applications, and methods of optimization of polymeric drugs and polymeric drug delivery systems for medicinal purposes. The basic rationale for the use of polymeric drugs and polymer delivery systems is the possibility to alter the pharmacokinetics and pharmacodynamics of therapeutic agents so as to maintain an adequate therapeutic environment at the site of disfunction for an extended period of time. The primary objectives for using polymeric drugs and polymeric drug delivery systems are to introduce new and efficient methods of drug administration, to improve efficacy and patient compliance, to decrease toxicity, and to ensure safety. The following factors influence the design and performance of polymers for medicinal applications: disease, drug properties, type of therapy (acute or chronic), physiology of the patient, administration route, and the site requiring therapy.
Advances in Carbohydrate Chemistry
Ozone, an important trace component, is critical to life on Earth and to atmospheric chemistry. The presence of ozone profoundly impacts the physical structure of the atmosphere and meteorology. Ozone is also an important photolytic source for HO radicals, the driving force for most of the chemistry that occurs in the lower atmosphere, is essential to shielding biota, and is the only molecule in the atmosphere that provides protection from UV radiation in the 250-300 nm region. However, recent concerns regarding environmental issues have inspired a need for a greater understanding of ozone, and the effects that it has on the Earth's atmosphere. The Mechanisms of Reactions Influencing Atmosph...