Results 221 to 230 of about 1,547,004 (264)
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Medium and Temperature Effects on the Redox Chemistry of Cytochromec
European Journal of Inorganic Chemistry, 2001Cytochromes c (cytc) are ubiquitous heme-containing metalloproteins that shuttle electrons in a variety of electron-transport chains, most often central to the production of the chemical energy necessary for cell life. The reduction potential (E°′) of the Fe3+/2+ couple is central to the physiological role of these species in that it influences the ...
BATTISTUZZI, Gianantonio +2 more
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Sensible Heat Storage for Medium and High Temperatures
2008Storage systems using sensible heat storage have been developed for operation temperatures up to 400°C. These systems are intended for integration into solarthermal power plants demanding storage capacities in the MWh-range. Research has been focused on the development of cost effective storage systems using concrete with embedded heat exchangers ...
Laing, Doerte +2 more
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Composite Membranes for Medium-Temperature PEM Fuel Cells
Annual Review of Materials Research, 2003▪ Abstract The main obstacles to greater commercialization of polymer electrolyte fuel cells are mostly related to the low-proton conductivity at low-relative humidity of the known ionomeric membranes, to their high methanol permeability and poor mechanical properties above ∼130°C.
ALBERTI, Giulio, CASCIOLA, Mario
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Temperature Green Function for a Cylindrically Anisotropic Medium
ZAMM, 1998Summary: The two- and three-dimensional temperature Green functions for a cylindrically anisotropic medium are obtained in a closed form. These Green functions would be useful for thermoelastic BEM and FEM analysis of the cylindrically orthotropic composite materials.
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Sub-ambient and medium temperature calibration
Journal of Thermal Analysis, 1993With some attention to temperature calibration but no other special precautions the temperatures of both solid-solid and melting transitions can be determined to within a few tenths of a Kelvin of absolute values in a range of heat-flux and power-compensation DSC instruments.
E. L. Charsley +9 more
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Brownian motion in a medium with inhomogeneous temperature
Physica A: Statistical Mechanics and its Applications, 1989Abstract We consider the motion of a Brownian particle in a medium with inhomogeneous temperature in the presence of an external potential. We start from the Klein-Kramers equation; in this equation a thermophoretic force, proportional to the temperature gradient, should in general be included to obtain a correct description of thermodiffusion ...
M.E. Widder, U.M. Titulaer
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Limiting temperatures of medium mass nuclei
Nuclear Physics A, 1987Abstract A limiting temperature of ∼6 MeV is found for αa emission from medium mass nuclei having excitation energies of 2 to 4.5 MeV/nucleon. This result is consistent with model predictions for a “cracking” phase transition.
D. Fabris +23 more
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Temperature of interstellar warm ionized medium
Astrophysics and Space Science, 2012This investigation on the temperature of the interstellar warm ionized medium (WIM) is characterized by the number and energy balance of the constituents of the WIM complex plasma viz. H plasma (electrons/ions/neutral atoms) and graphite dust, having a size distribution, characterized by the MRN (Mathis, Rumpl and Nordsieck) power law.
Sanjay K. Mishra +2 more
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High-temperature processes in a porous medium
High Temperature, 2009A study is made into a nonlinear filtration problem on the flow of gas in a porous weakly conducting medium, which simulates the process of superheating in a reactor. Explicit estimates are obtained of two critical values of the similarity parameter of the problem, which define the condition of existence of the steady-state mode of cooling a system ...
V. P. Maslov, I. A. Molotkov
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IV–VI Compounds for Medium Temperatures
2017Lead chalcogenides are traditional thermoelectric materials with decent ZT values. Lead (Pb) chalcogenides in particular are widely studied for the last few decades for medium-temperature power generation applications due to their decent ZT values at high temperature. Both PbTe and PbSe have intrinsic two valence bands contributing to high hole density
Qian Zhang +7 more
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