Materials biologial

Fluoroxytiifluorouiethane ettectively fluorinates tertiary carbon-hydrogen bonds in materials with biologieal applications [2 3] (equations 23 and 24)... 

Artificial organs that perform the physical and biochemical functions of the heart, hver, pancreas, or lung are one class of organ replacements. A rather different target of opportunity is the development of biologieal materials that play a more passive role in the body for example,... 

Reviewed by Ru Ren, Sehool of Chemistry, University of St Andrews, U.K Min Shen, Sehool of Chemieal, Biologieal and Materials Engineering, University of Oklahoma, USA. 

Reis, R. L., Cunha, A. M. (2001). Starch and starch based thermoplasties. Biologieal and biomimetie materials. In ... 

Millqvist-Fureby, A., Malmsten, M., and Bergenstahl, B. (2000). An aqueous polymer two-phase system as carrier in the spray-drying of biologieal material. J. Colloid Interface Sci. 225, 54-61. 

The curcumin method (in either the rosocyanin or rubrocurcumin version) has been applied for determining traee amounts of boron in biologieal materials [10], soils and plants [17], waters [51], silicon [52], chlorosilanes [20], uranium [1,53], zirconium and its alloys [53,54], nickel [55,56], copper alloys [56], cast iron and steel [12,57-59], beryllium and magnesium [53], and phosphates [2]. This method was also used for determining boric acid admixtures (about 0.05%) in powdered boron [11]. Some synthetic compounds having the structure similar to that of curcumin, were used in determining boron in water [60]. 

Biological resistance of fiber-based materials can be improved by several methods. Bonding chemicals to the cell wall polymers increases resistanee due to the lowering of the equilibrium moisture content point below that needed for microorganism attack and by changing the conformation and configuration requirements of the enzyme-substrate reae-tions. Toxic chemicals can also be added to the composite to stop biologieal attack. This is the basis for the wood preservation industry. 

Materials in the biologieal group are related to wound healing, tissue regeneration, or maintenanee of normal tissue biology. Materials in the... 

Solutions in contact with polyvinyl chloride can become contaminated with trace amounts of lead, titanium, tin, zinc, iron, magnesium or cadmium from additives used in the manufaeture and moulding of PVC. A-Phenyl-2-naphthylamine is a contaminant of solvents and biologieal materials that have been in contact with black rabber or neoprene (in which it is used as an antioxidant). Although this naphthylamine was only an artifact of the isolation procedures, it was at first thought to be a genuine component of vitamin K preparations, extracts of plant lipids, algae, butter, animal livers, eye tissue and kidney tissue [Brown Chem Br 3 524 1967], Most of the above impurities can be removed by prior distillation of the solvent, and care should be taken to avoid further contact with plastic or black rabber materials. 

Wang, J., et al. 2008. Preparation and biologieal jnoperties of PLLA/p-TCP composites reinforced by chitosan fibtas. Biomedical Materials 3(2) 025004. 

British Standard (PAS 100) [8] defines composting as a process of eorrtrolled biological decomposition of biodegradable materials tmder managed conditions that are predominantly aerobic and that allow the development of thermophilic temperatures as a lesirlt of biologieally produced heat, in order to achieve compost that is sanitary and stable. 

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