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Showing 1 to 20 of 81 for “"pressure dependence"”.
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Investigation of the Pressure Dependence of SO3 Formation
The kinetics of the pressure dependent O + SO2 + Ar reaction have been investigated using laser photolysis resonance fluorescence at temperatures of 289 K, 399 K, 581 K, 699 K, 842 K and 1040 K and at pressures from 30-665 torr. Falloff was observed for the first time in the pressure dependence. …
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Pressure dependence of the luminescence and Raman modes in polyfluorene
… analysis of the Raman spectra under hydrostatic pressures for three oligo(para-phenylene) materials (p-terphenyl, 3P; p-quaterphenyl, 4P; and p-hexaphenyl, 6P) under hydrostatic pressure up to 80 kbar, with a focus on the 15-25 kbar region where the molecules are known to be forced into a more …
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Pressure dependence of superconductivity in amorphous Ni x Zr 100-x alloys
Pressure variations of the superconducting transition temperature Ic of a series of amorphous NixZr 1 OO-x alloys have been studied under quasmydrostatic pressures upto 8 G Pa. For amorphous samples having Ni-concentration less than 40%, i)Tc/dP is positive in sign and it decreases non linearly …
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The Pressure Dependence of the Low Temperature Thermal Properties of an Amorphous Polymer
… and as universal for its apparently weak dependence on chemical composition of the glass. For temperatures below 1 K the phenomemological Tunneling Model and the existence of phonons can account for the observed behavior, which is indicative of localized two-level excitations. For …
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The pressure dependence of the low-temperature thermal properties of an amorphous polymer
… and as universal for its apparently weak dependence on chemical composition of the glass. For temperatures below 1 K the phenomemological Tunneling Model and the existence of phonons can account for the observed behavior, which is indicative of localized two-level excitations. For …
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The Pressure Dependence of The Thermoelectric Power of Sodium Between 5 and 14 Degrees K
Made available in DSpace on 2015-05-12T22:39:08Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7414639.PDF: 3420470 bytes, checksum: bc27fdb902fdeb577847a836d7570c5d (MD5) Previous issue date: 1974
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The pressure dependence of the thermoelectric power of sodium between 5°K and 14°K
"The effect of pressure has been measured on the thermoelectric power of sodium between 5°K and l4°K where phonon drag is believed to play a prominent role. A Superconducting Quantum Interference Device (""SQUID"") was used to measure the tiny voltages involved. At 1 and 2 kilobars no effect was …
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Pressure dependence of the Néel temperature in Co0 and Ni0, measured with a new dilatometer
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 1960
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Integrated pressure-dependence in automated mechanism generation : a new tool for building gas-phase kinetic models
… by their inability to capture the effects of pressure-dependence and falloff - even though these effects are important in almost every gas-phase system of interest to engineers and designers. Pressure-dependent reactions cannot be included using simple rate rules. Until now they presented an …
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Pressure dependence of spin fluctuations in metallic glasses Zrâ â Niâ â ,Zrâ â (Nix/Feâ â â -x)â â and /Zrx/feâ â â -x
… CU2SZr75 were measured under quasi-hydrostatic pressure up to 8 OPa (80kbar). The volume (pressure) dependence of the electron-phonon coupling parameters Aep for CU25Zr75 was calculated using the McMillan equatio11. Using this volume dependence of Aep and the modified McMillan equation which …
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The Influence of Pressure on The Low-Temperature Kinetics of Myoglobin
… temperatures (60 - 160K) was studied using high pressure flash photolysis techniques. By comparing the pressure dependence when the system is first frozen and then pressurized with the pressure dependence when the system is first pressurized and then frozen, the total volume change for the …
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Applications of High Pressure Dynamic NMR
The effects of temperature and pressure on the conformational isomerization of 1,1-difluorocyclohexane in solution have been studied using $\sp $F FT-NMR spectroscopy. The pressure dependence of the isomerization of 1,1-difluorcyclohexane in acetone-d$\sb6$, n-pentane and methylcyclohexane compared …
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High pressure Mössbauer studies of magnetic interactions in palladium-cobalt alloys
The pressure dependence of the Fe57 hyper fine field has been studied by means of the Mossbauer effect in a series of PdCo alloys consisting of 5, 8, 9, 12, and 15 atomic percent Co, up to 180 kilobarsat 297 oK. The Curie temperatures (Tc) of the 8% and 9% alloys are observed to increase with …
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Molecular Insights on the Boundary Behavior of Liquids
… very fundamental factors, namely the thickness dependence and the pressure dependence on the centre-of-mass diffusion of the confined polymer melt have been investigated. A strong pressure dependence within a highly confined melt suggests that the dynamics within the molecular thin melt are …
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Experimental Correlation and Self Consistent Analysis of an Infrared, Fir, Mw Triple Resonant System in Amonnia
… by the experiments. The measurements for the MW pressure dependence were justified by the density matrix calculations.
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Effect of high pressure on the Fermi surfaces of zinc and aluminum
The effect of pressures up to 7 kbar on portions of the Fermi surfaces of zinc and aluminum has been determined by using the field-modulation technique to detect de Haasvan Alphen oscillations and by using solid helium as a pressure medium. The primary result obtained in the study of zinc was that …
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Testing theories for thermal transport using high pressure
… gem anvil cell techniques. I demonstrated that pressure tuning of physical properties of materials is an elegant approach to test the validity of theories for thermal transport. Pressure dependence of the cross-plane thermal conductivity Λ(P) of a layered muscovite mica crystal was measured by …
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