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排序方式: 共有225条查询结果,搜索用时 15 毫秒
221.
Background
Clinical spinal cord injury in domestic dogs provides a model population in which to test the efficacy of putative therapeutic interventions for human spinal cord injury. To achieve this potential a robust method of functional analysis is required so that statistical comparison of numerical data derived from treated and control animals can be achieved. 相似文献222.
Delhomme O Raeppel C Teigné D Briand O Millet M 《Analytical and bioanalytical chemistry》2011,399(3):1325-1334
To measure dermal exposure of a non-agricultural occupationally exposed population to pesticides, a new method has been developed
for analysis of 13 pesticides from different classes (fungicides, herbicides, insecticides) on dermal patches. The method
includes extraction of the patches and analysis of the pesticides by GC–MS and/or HPLC–fluorescence. Water-soluble pesticides
(glyphosate and glufosinate) on patches were ultrasonically extracted twice with ultra-pure water for 10 min and analysed
by HPLC–fluorescence after derivatisation with FMOC. Organic-soluble pesticides (bifenthrin, cyprodinil, difufenicanil, fludioxonil,
oxadiazon, pyriproxyfen, clopyralid, 2,4-D, fluroxypyr, 2,4-MCPA, and triclopyr) were extracted ultrasonically twice for 10 min
with 70:30 dichloromethane–acetonitrile and analysed by GC–MS directly or after derivatisation with N-methyl-N-tert-butyldimethylsilyltrifluoroacetamide. Detection limits varied between 3 and 4 μg L−1 for water-soluble pesticides and between 1 and 10 μg L−1 for organic-soluble pesticides. 相似文献
223.
A linear one-dimensional model for thin-walled rods with open strongly curved cross-section, obtained by asymptotic methods
is presented. A dimensional analysis of the linear three-dimensional equilibrium equations yields dimensionless numbers that
reflect the geometry of the structure and the level of applied forces. For a given force level, the order of magnitude of
the displacements and the corresponding one-dimensional model are deduced by asymptotic expansions. In the case of low force
levels, we obtain a one-dimensional model whose kinematics, traction, and twist equations correspond to the Vlassov ones.
However, this model couples twist and bending effects in the bending equations, unlike the Vlassov model where the twist angle
and the bending displacement are uncoupled 相似文献
224.
We developed an interferometric microscopy technique, referred to as Jones phase microscopy, capable of extracting the spatially resolved Jones polarization matrix associated with transparent and anisotropic samples. This is a generalization of quantitative phase imaging, which is recovered from one diagonal element of the measured matrix. The principle of the technique is demonstrated with measurements of a liquid crystal spatial light modulator and the potential for live cell imaging with experiments on live neurons in culture. 相似文献
225.
Fabrício RS Pereira Andréa Alessio Maurício S Sercheli Tatiane Pedro Elizabeth Bilevicius Jane M Rondina Helka FB Ozelo Gabriela Castellano Roberto JM Covolan Benito P Damasceno Fernando Cendes 《BMC neuroscience》2010,11(1):1-13