Results 271 to 280 of about 840,481 (311)

Transportation of Biological Materials

1987
As the use of genetically altered microorganisms increases, so will the need to transport these materials. Although the shipment of bioengineered materials raises fewer direct environmental concerns than intentional release or scale-up manufacturing, some important regulatory questions are presented.
Jeffrey N. Gibbs, Iver P. Cooper, Bruce F. Mackler   +2 more
openaire   +1 more source

Reactive Sites and Biological Transport

1961
Publisher Summary Biological barriers are studded with a variety of reactive sites that favor the passage of suitable molecules; in some cases, mechanisms that seem inherently improbable deliver the molecules from these sites against electrochemical gradients, either normally or when a gradient of an analog is artifically produced. In their aggregate,
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Biological Transport

Annual Review of Biochemistry, 1963
L E, HOKIN, M R, HOKIN
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Passive water transport in biological pores

2002
Three kinds of membrane proteins have been shown to have water channels properties: the aquaporins, the cotransporters, and the uniports. A molecular-kinetic description of water transport in pores is compared to analytical models based on macroscopic parameters such as pore diameter and length. The use and limitations of irreversible thermodynamics is
Zeuthen, Thomas, Macaulay, Nanna
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Biological transport processes

1989
Transport processes are an integral part of biological function. For example, the energy converting processes which we have discussed in the previous chapters need a continuous supply of substrates and a continuous disposal of products and waste. It is evident that there can be no respiration when there are no means for oxygen and substrates (glucose ...
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Transport Mechanisms of Biological Colloids^a

Annals of the New York Academy of Sciences, 1986
An effort was made to distinguish among various mechanisms by which colloidal particles can be transported through liquid solutions. Figures 1-3 provide a visual (Figure: see text) summary of these differences. The various "phoretic" motions (electrophoresis, diffusiophoresis, osmophoresis) differ from sedimentation in that the driving forces operate ...
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Atomic Force Microscopy as a Tool to Study Transport Phenomena in Biological Systems

Processes, 2023
Bingqian Xu, Sneha Kandapal, Xu Bingqian   +2 more
exaly  

Correlated particle transport enables biological free energy transduction

Biophysical Journal, 2023
Jonathon Yuly, David Beratan
exaly  

Ion Transport in Biological Membranes

2005
M. Baruscotti, G. Thiel, A. Moroni
openaire   +2 more sources

A modified and efficient phase field model for the biological transport network

Journal of Computational Physics, 2023
Xiaoyu Jiang, Yibao Li
exaly