نتایج جستجو برای: sieving
تعداد نتایج: 1939 فیلتر نتایج به سال:
Immunocytochemical staining demonstrated N-acetylatedB-endorphin (N-AcB-End) and a -MSH in a few corticotrophs. RIA's of crude anterior pituitary extract and molecular sieving chromatography demonstrates that the major portion is B-End sized with a significant proportion being N-acetylated and an a-MSH peak. Molecular sieving chromatography of extracted plasma demonstrated a similar pattern to ...
We describe an enhanced version of the TWINKLE factoring device and analyse to what extent it can be expected to speed up the sieving step of the Quadratic Sieve and Number Field Sieve factoring algorithms. The bottom line of our analysis is that the TWINKLE-assisted factorization of 768-bit numbers is difficult but doable in about 9 months (including the sieving and matrix parts) by a large or...
Climatic conditions and in situ lithology govern the hydrogeological behaviour of badland surfaces in western Canada. Based on field observations, samples representing three distinct surfaces in the Avonlea badlands (60 km SSW of Regina) of Saskatchewan were collected. The influence of erosion on the engineering properties of this typical indigenous badland profile was investigated by measuring...
Four commercial samples of distillers dried grains with solubles (DDGS) were sieved. All sieved fractions except for the pan fraction, constituting about 90% of original mass, were then winnowed with an air blast seed cleaner. Sieving was effective in producing fractions with varying composition. As the particle size decreased, protein and ash contents increased, and total carbohydrate (CHO) de...
We prove a collection of conjectures of D. White [37], as well as some related conjectures of Abuzzahab-Korson-Li-Meyer [1] and of Reiner and White [21], [37], regarding the cyclic sieving phenomenon of Reiner, Stanton, and White [22] as it applies to jeu-de-taquin promotion on rectangular tableaux. To do this, we use Kazhdan-Lusztig theory and a characterization of the dual canonical basis of ...
A number of electromigration separation modes were applied to the separation of CNBr-released peptides from rat tail tendon collagen (microemulsion electrokinetic chromatography, methanol- or ethanol-modified background electrolytes and the separation in the presence of molecular sieving effect exerting polymer, both in the presence and absence of SDS). Electrodriven separations with a Hypersil...
We construct a large class of examples of the cyclic sieving phenomenon by exploiting the representation theory of semi-simple Lie algebras. Let M be a finite dimensional representation of a semi-simple Lie algebra and let B be the associated Kashiwara crystal. For r > 0, the triple (X, c, P ) which exhibits the cyclic sieving phenomenon is constructed as follows: the set X is the set of isolat...
Introduction: Sieving was used extensively until 1999 to determine the particle size distribution of lunar samples. This method is time-consuming, and requires more than a gram of material in order to obtain a result in which one may have confidence. This is demonstrated by the difference in geometric mean and median for samples measured by [1], in which a 14-gram sample produced a geometric me...
Duodenal samples from three lactating cows were used to measure the particle size distribution by wet sieving and by laser diffraction (LD). The median particle size was calculated in the size range where the methods overlapped, and the median particle size was not different between the methods (P = 0.98). The particle size data were also fitted to a log normal distribution function. The logari...
Trisacryl gelatin microspheres for therapeutic embolization, I: development and in vitro evaluation.
PURPOSE To develop a precisely calibrated, perfectly spherical, stainable, soft, and implantable but nonresorbable particulate embolization material. METHODS Calibrated particles with a trisacryl gelatin polymer core and hydrophilic surface characteristics were obtained by reversed emulsion synthesis followed by application of a wet-sieving technique. Particles were suspended in saline, bottl...
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