منابع مشابه
Mobilities of Ions in Air, Hydrogen, and Nitrogen.
Preliminary communication. s The paper will appear shortly in Science, New York, N. S., 1918. All the precautions mentioned in this account were carefully observed in the present investigation. 3 The methods previously used in studying the photosynthesis of aquatic plants are not as accurate as the one here described, nor do previous experiments afford the kind of data needed for our purpose. C...
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A supercritical hydrogen liquefaction cycle is proposed and analyzed numerically. If hydrogen is to be used as an energy carrier, the efficiency of liquefaction will become increasingly important. By examining some difficulties of commonly used industrial liquefaction cycles, several changes are suggested and a readily scalable, supercritical, helium-cooled hydrogen liquefaction cycle is propos...
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In this paper, the effect of adding hydrogen to the composition of methane and air in a micro combustor is investigated by a three-dimensional numerical method. First, the results of the current study in determining the wall temperature of the micro combustion chamber are compared with those obtained from the experimental and numerical results of the previous research. By confirming the numeric...
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This review summarizes recent aspects of (di)nitrogen fixation and (di)hydrogen metabolism, with emphasis on cyanobacteria. These organisms possess several types of the enzyme complexes catalyzing N(2) fixation and/or H(2) formation or oxidation, namely, two Mo nitrogenases, a V nitrogenase, and two hydrogenases. The two cyanobacterial Ni hydrogenases are differentiated as either uptake or bidi...
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The fact that our northern trees and shrubs after they become dormant in the fall require a period of chilling before warm weather will start them into growth again, is a protective adaptation of the highest importance to these plants, for if warmth alVne would start them into growth they would begin growing in Indian summer and the stored food that the plant requires for its normal vigorous gr...
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ژورنال
عنوان ژورنال: Journal of the Franklin Institute
سال: 1878
ISSN: 0016-0032
DOI: 10.1016/0016-0032(78)90421-0