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تعداد نتایج: 16977537 فیلتر نتایج به سال:
A mid-infrared difference frequency generator (DFG) based on a periodically poled thin-film lithium niobate rib waveguide sapphire substrate is theoretically studied. mode analysis carried out at the region, and focuses effects of geometry effective refractive indices few lower-order modes. complete theory suitable for modeling DFG structure described. Its validity confirmed by comparing theore...
Evaporation of water in food during frying causes fat break down into hydroperoxides. The peroxide indicates the initial stage oxidation. This study aims to determine exact temperature and time effect frequency on peroxide. research was carried out 2 stages, namely preliminary aimed at getting right cooking time, main value oil. used experimental research, a completely randomized design with fi...
A single-trim, highly accurate Colpitts-based frequency reference is presented. Our analysis shows that the Colpitts-topology outperforms cross-coupled LC -topology in terms of temperature stability. Measurements on prototypes a 0.13- ...
This study aimed to assess the effect of mechanical pretreatment on bleached eucalyptus kraft pulp fibers and investigate influence reaction time temperature properties yield nanocrystalline cellulose (NCC) microcrystalline (MCC). Two types pulps were hydrolyzed, 1 (control, whole fibers) 2 (mechanically pretreated, disintegrated fibers). NCC MCC particles obtained by sulfuric acid hydrolysis (...
Methods 127 sedentary women (47±11 yr, 45.8±5% body fat, 35.4±5 kg/m) were randomized to participate in a no diet or exercise control group (C) or the Curves Complete 90-day Challenge (CC), Weight Watchers Points Plus (WW), Jenny Craig (JC), or Nutrisystem Advance SelectTM (NS) weight loss programs for 12-wks. Participants in the diet groups were encouraged to exercise (WW, JC, NS) while those ...
Sago starch is a locally grown and produced starch resource in Malaysia. In this study, corn starch to sago starch ratios (CS:SS) of 0:20, 5:15, 10:10, 15:5 and 20:0 were included in feed mixture to contain 20% starch and produce five isonitrogenous and isocaloric (30% crude protein and 16.7 kJ/g, respectively) tilapia Oreochromis sp < em>. diets. Diets were preconditioned to contain 40% moistu...
assume ? ? l2(rd) has fourier transform continuous at the origin, with ˆ ?(0) = 1, and thatcan be represented by an affine series f = j>0 k?zd c j,k?j,k for some coefficients satisfying c 1(2) = j>0 k?zd |c j,k|2 1/2 <?. here ?j,k(x) = |deta j |1/2?(a jx ?k) and the dilation matrices a j expand, for example a j = 2j i. the result improves an observation by daubechies that t...
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