نتایج جستجو برای: chlorinated poly p
تعداد نتایج: 1344166 فیلتر نتایج به سال:
While the role of fluorine on mass transport in polymers has been subject extensive research efforts, less attention paid to played by other halogens, such as chlorine. These efforts favored synthesis a plethora perfluoropolymers which, although exhibiting enhanced physical aging resistance relative conventional hydrocarbon-based polymers, suffer from swelling and plasticization presence hydroc...
Background: Poly chlorinated biphenyls (PCBs) are a class of chlorinated organic chemicals that do not easily degrade in the environment. This study was conducted to determine the effect of microwave rays, hydrogen peroxide, dioxide titanium and ethanol solvent on the degradation of PCBs. Methods: A 900w domestic MW oven with a fixed frequency of 2450 MHZ was used to provide MW irradiation. R...
In this paper, we use resource-bounded dimension theory to investigate polynomial size circuits. We show that for every i ≥ 0, P/poly has ith order scaled p 3 -strong dimension 0. We also show that P/poly i.o. has p 3 -dimension 1/2, p 3 -strong dimension 1. Our results improve previous measure results of Lutz (1992) and dimension results of Hitchcock and Vinodchandran (2004).
A number of commercial compounds having chlorinated aromatic hydrocarbon structures are used extensively for medical(3), industrial(4) and agricultural(5) purposes. Quantities of certain parent chlorinated aromatic hydrocarbons and metabolites have been repeatedly detected as residues in the food supply and tissues of birds, fish, and mammals(6-9) including man(10). Chlor-inated diphenyl-p-diox...
We consider approximate Bayesian analysis for the poly-Weibull model, which arises in competitive risk scenarios when the risks are independent and there is no knowledge about which factor was responsible for failure. Real and generated datasets illustrate the methodology, which is based on Laplace's method for integrals. is grateful to the Brazilian institutions UFSCar and CNPq for their nanci...
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