نتایج جستجو برای: sieving

تعداد نتایج: 1939  

Journal: :Scientific reports 2016
Yuanyuan Qu Feng Li Hongcai Zhou Mingwen Zhao

Light isotopes separation, such as (3)He/(4)He, H2/D2, H2/T2, etc., is crucial for various advanced technologies including isotope labeling, nuclear weapons, cryogenics and power generation. However, their nearly identical chemical properties made the separation challenging. The low productivity of the present isotopes separation approaches hinders the relevant applications. An efficient membra...

Journal: :Journal of the Research Association of Powder Technology, Japan 1976

Journal: :The Electronic Journal of Combinatorics 2019

Journal: :Journal of the Research Association of Powder Technology, Japan 1974

2011
Michael Schneider

Lattice based cryptography is gaining more and more importance in the cryptographic community. It is a common approach to use a special class of lattices, so-called ideal lattices, as the basis of lattice based crypto systems. This speeds up computations and saves storage space for cryptographic keys. The most important underlying hard problem is the shortest vector problem. So far there is no ...

2003
Matthew Jordan Lazzara

The ultrafiltration of plasma in the mammalian glomerulus is the first step in the processing of blood by the kidney. Proper functioning of this process is critical to the kidney’s ability to effectively eliminate waste and retain desirable substances. The glomerular barrier has long been regarded as both a size and charge selective screen for plasma solutes. The origin of this selectivity is f...

Journal: :CoRR 2017
Thijs Laarhoven

To overcome the large memory requirement of classical lattice sieving algorithms for solving hard lattice problems, Bai–Laarhoven–Stehlé [ANTS 2016] studied tuple lattice sieving, where tuples instead of pairs of lattice vectors are combined to form shorter vectors. Herold–Kirshanova [PKC 2017] recently improved upon their results for arbitrary tuple sizes, for example showing that a triple sie...

Journal: :Physical chemistry chemical physics : PCCP 2013
Piotr Kowalczyk Julong He Meng Hu Piotr A Gauden Sylwester Furmaniak Artur P Terzyk

Applying pore size analysis, Monte Carlo simulations, and transition state theory, we study the molecular sieving properties of recently discovered crystalline exotic cubic carbon allotropes (Hu et al., J. Phys. Chem. C, 2012, 116, 24233-24238) at 298 K and infinite dilution. The fcc-C10 cubic carbon crystal shows unusual molecular sieving characteristics. The carbon cavities of the fcc-C10 cub...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2009
Vamilton Alvares Santarém Luciana Puga Magoti Tathiana Dias Sichieri

The purpose of this study was to evaluate the influence of variables in a flotation technique for the recovery of Toxocara canis eggs from soil. The trials were done under standardized conditions on one gram of previously sterilized soil samples contaminated with 200 eggs of T. canis. The following variables were evaluated in serial steps: sieving; type of wash; time of stirring; resuspension o...

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