نتایج جستجو برای: 45 isotropic mask
تعداد نتایج: 205977 فیلتر نتایج به سال:
A nematic elastomer film with a 90 o twist orientation between the top and bottom surfaces is prepared by chiral imprinting methods. The reactive achiral nematic monomers and crosslinkers are photopolymerized in the presence of a controlled amount of unreactive chiral dopant. The elastomer films possess a 90 o twist orientation even after the removal of the chiral dopant. The films exhibit an e...
Microcalorimetry was used to show that transition-temperature ranges of phospho- and glycolipids of the brown marine alga Laminaria japonica were similar (from -62 to -47 degrees C up to 62-65 degrees C), except for monogalactosyldiacylglycerol, the low-temperature limit of which was shifted to -78 degrees C. As was shown by polarizing microscopy, the low-enthalpy peaks at temperatures of appro...
I develop an implicit finite-difference migration method for vertical transversely isotropic (VTI) media with laterally varying anisotropy parameters. I approximate the dispersion relation of VTI media with a rational function series, the coefficients of which are estimated by least-squares optimization. These coefficients are functions of Thomsen anisotropy parameters. They are calculated and ...
the technique of applying mask is one of the most important techniques in arabic contemporary poetry in which the ancient characters would be recalled by mentioned technique in order to express the desired concepts. this literary technique plays an important role in egyptian modernism contemporary poetry. thus the present research intends to survey the lexical and expressional meaning of mask a...
Background and Aim: Bioaerosols are one of the most important agents that cause post operating infections in hospitals. Surgical masks are recommended for prevention of bioaerosols transmition in operating rooms. This study aimed at evaluation of submicron particle filtration efficiency of domestic and imported surgical masks. Materials and Methods: In this cross sectional study, 5 types of...
Cephalometric evaluation of patients with Class III malocclusion after face mask therapy in mixed dentition period Dr. MS. A Akhoundi * - Dr. A. Khorshidian ** * Associate Professor of Orthodontics Dept., Faculty of Dentistry and Dental Research Center, Tehran University of Medical Sciences. ** Dentist. Abstract Background and Aim: Among different treatment options for patients with Class III m...
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