Results 261 to 270 of about 7,826,326 (312)
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High-temperature liquid chromatography
Journal of Chromatography A, 2003The present state of the active use of elevated temperatures in liquid chromatography is reviewed, including the effects on retention, selectivity and efficiency. Separations in aqueous mobile phases as well as non-aqueous media are discussed, with particular emphasis on narrow-bore columns.
Tyge, Greibrokk, Thomas, Andersen
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Superstrings at High Temperature
Physical Review Letters, 1985The behavior of ten-dimensional superstrings at high temperatures is studied by use of the microcanonical ensemble. We focus on closed superstring theories. The massive string excitations alone have negative specific heat. Such a system can reach equilibrium with the zero modes of the string if the energy carried by zero modes is less than a given ...
, Bowick, , Wijewardhana
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1996
Abstract ln this method electrical current is used to heat a sample placed in the DAC chamber. Liu and Bassett (1975) first studied melting of iron wire which was resistively heated in an ungasketed DAG. The phase diagram of iron was studied to pressures up to 43 GP a by Boehler et al. (1986) and up to 36 GP a by Mao et al.
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Abstract ln this method electrical current is used to heat a sample placed in the DAC chamber. Liu and Bassett (1975) first studied melting of iron wire which was resistively heated in an ungasketed DAG. The phase diagram of iron was studied to pressures up to 43 GP a by Boehler et al. (1986) and up to 36 GP a by Mao et al.
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High-Temperature Chemical Transport
Journal of Crystal Growth, 1971The increasing importance of high-temperature materials for science and technology has in the last ten years created a great demand for single crystals of compounds with a high melting point. Although the operating temperatures for methods of growing crystals from the melt have been pushed up continuously, crystals of many high-melting compounds cannot
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High‐Entropy High‐Temperature High‐Piezoelectricity Ceramics
Advanced MaterialsAbstractHigh‐temperature piezoelectric materials are essential components of transducers and accelerometers applied in the fields of aircraft engines, automobiles, nuclear power units, etc., yet how to achieve large piezoelectricity accompanied by high Curie temperature and superior resistivity is still a big challenge.
Jie Wu +10 more
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Science, 1985
Water environments with temperatures up to and above boiling are commonly found in association with geothermal activity. At temperatures above 60°C, only bacteria are found. Bacteria with temperature optima over the range 65° to 105°C have been obtained in pure culture and are the object of many research projects.
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Water environments with temperatures up to and above boiling are commonly found in association with geothermal activity. At temperatures above 60°C, only bacteria are found. Bacteria with temperature optima over the range 65° to 105°C have been obtained in pure culture and are the object of many research projects.
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New High-Temperature Chlorella
Science, 1967Growth characteristics of Chlorella 1-9-30, a new strain of green, high-temperature algae, are compared with those of the widely used Chlorella 7-11-05. Under comparable conditions. Chlorella 1-9-30 has the same temperature range for growth as has Chlorella
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High-Temperature Structural Ceramics
Science, 1980The unique properties of ceramics based on silicon carbide and silicon nitride make them prime candidates for use in advanced energy conversion systems. These compounds are the bases for broad families of engineering materials, whose properties are reviewed. The relationships between processing, microstructure, and properties are discussed.
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