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Composite materials are engineered materials made from two or more constituent materials with significantly different physical or chemical properties and which remain separate and distinct on a macroscopic level within the finished structure. Fibre Reinforced Polymers or FRPs include Wood comprising (cellulose fibers in a lignin and hemicellulose matrix), Carbon-fiber reinforced plastic or CFRP, Glass-fibre reinforced plastic or GFRP (also GRP). If classified by matrix then there are Thermoplastic Composites, short fiber thermoplastics, long fibre thermoplastics or long fibre reinforced thermoplastics There are numerous thermoset composites, but advanced systems usually incorporate aramid fi...
Evolution gave rise to a prominent insect diversity at every level of ecological niche. Since then, hordes of insects have threatened human and cattle health as well as most of all green lands and agricultural crops. Now, the insect problem expands from many mutant forms of yellow dengue fever mosquitoes to highly-resistant larvae of most all various phytophageous species. The tremendous expansion of insects is due not only to an increasing resistance capacity to insecticides, but also to a strong capacity for adapting to different climate and environmental changes, including global warming. Obviously insects display a number of rudimentary systems to build an extremely efficient organism to...
Our senses shape our reality and allow us to adapt to the everlasting changing environment. From all sensory modalities, olfaction is maybe the most intriguing one, probably because olfactory information influences our daily life without us even noticing. However, we can all relate to the powerful impact that the smell of our favorite food has on us. Likewise, olfactory cues could be determinants for partner selection (because love can be blind but not anosmic), mood regulation and cognition. Furthermore, recent studies link early olfactory dysfunctions to the occurrence of devastating pathologies, such as Alzheimer´s and Parkinson´s. Thus, the study of olfaction, at different levels from genetics to behavior, will pave the way for a better understanding of brain processes and associated disorders.
Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
This volume delivers the latest high-quality research on these compounds across the scientific disciplines for chemists, analysts. and health and nutritional scientists.