نتایج جستجو برای: dma
تعداد نتایج: 2516 فیلتر نتایج به سال:
OBJECTIVE Little is known about arsenic and diabetes in youth. We examined the association of arsenic with type 1 and type 2 diabetes in the SEARCH for Diabetes in Youth Case-Control (SEARCH-CC) study. Because one-carbon metabolism can influence arsenic metabolism, we also evaluated the potential interaction of folate and vitamin B12 with arsenic metabolism on the odds of diabetes. RESEARCH D...
Aging of a sheet explosive contain RDX explosive and HTPB binder is studied at temperatures of 50, 60 and 70 oC in times 60, 120 and 180 days. Dynamic-mechanical analysis (DMA), sol – gel analysis (SGA) and hardness measurements methods are used in this research. The changes of tan_delta in DMA, hardness amounts and soluble fraction in SGA are measured for unaged and aged samples. The obtained...
Dynamic mechanical analysis was used to study the viscoelastic behavior of nanocomposites consisting thermoplastic corn starch plasticized with glycerol and/or urea and addition 2 or 5 wt. % montmorillonite-type nanofiller. Motional heterogeneity studied materials inferred from temperature dependences damping factor. Relaxation processes in composites only one plasticizer proceeded a similar ma...
In this work, modification of carbon paste electrode surface with poly (2, 5-Dimethyl aniline) (P-2,5-DMA) by using electrochemical polymerization was described. Then, transition metal ions of Ni(II) were incorporated into the polymer film by two ways. At first way, the polymeric modified electrode was immersed in 0.2 M NiSO4 solutions and the second way was carried out by electrodeposition of ...
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