Results 191 to 200 of about 2,982,469 (235)

A high-resolution system for gradient analysis

Analytical Biochemistry, 1970
Abstract A high-performance semiautomatic apparatus for the analysis and fractionation of density gradient preparations is described. The critical parameters of length and diameter of the conducting system, smoothness of stream line, and nonpulsatile flow have been examined and brought close to a practical optimum. In this system, the centrifuge tube
B E, Morton, C A, Hirsch
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Pulsed gradient analysis using a dedicated magnetometer

Magma: Magnetic Resonance Materials in Physics, Biology, and Medicine, 1997
In magnetic resonance imaging and spectroscopy, knowledge of the magnetic field gradient behavior is very important. This work describes a simple way to characterize the temporal and spatial dependence of the main magnetic field when a gradient is switched. Records are performed with a home-built magnetometer.
P, Desgoutte, L, Chaabane, B, Favre, A, Deguin, C, Lapray, A, Briguet   +5 more
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Uncertainty Analysis with Gradient Information

Journal of Petroleum Technology, 1998
This article is a synopsis of paper SPE 48997, "Uncertainty Analysis in Predictive Reservoir Simulation Using Gradient Information," by O.J. Lepine and R.C. Bissell, SPE, Elf Exploration U.K.; S.I. Aanonsen, SPE, Norsk Hydro; I. Pallister, SPE, GeoQuest RT; and J.W.
openaire   +1 more source

Analysis of growth factor gradients in hydra

Journal of Cellular Physiology, 1968
AbstractDifferential equations have been written and solved to describe the concentration gradients for the two hydra growth factors. The equations consider diffusion, catabolism and synthesis of the materials based primarily on the model of hydra growth described by A. L. Burnett. Concentration gradient profiles were obtained which correspond with the
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A simplified high-pesolution gradient analysis system

Analytical Biochemistry, 1973
Abstract A simplified high-performance, semiautomatic apparatus for the analysis and fractionation of density gradient preparations is described. In this system the gradient, mounted directly under a standard recording spectrophotometer, is displaced upwards through a vertical straight-path flow cell, then downward to a fraction collector.
openaire   +2 more sources

Ribosomes: Analysis by Cesium Sulfate Gradient Centrifugation

Science, 1965
Ribosomes from the cytoplasm of a mammalian tissue, HeLa cells, were partially purified and then concentrated into a zone by prolonged centrifugation in Cs 2 SO 4 solution (density, 1.43 grams per milliliter).
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Analysis of Gradient Parametrized Measures

1997
In variational principles we are especially interested in integrands depending on gradients. For this reason we would like to study weak convergence associated to sequences of gradients. Parametrized measures associated to sequences of gradients are called gradient parametrized measures.
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GRADIENT ANALYSIS OF VEGETATION*

Biological Reviews, 1967
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Investigating Gradients in Ecosystem Analysis

2008
Fiedler, Konrad, Beck, Erwin
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