A New Determination of The Gas Constant has been made using a method in which the velocity of sound in argon was measured by means of an acoustic interferometer operated close to the triple point of water. Ninety eight independent velocity measurements were made over a pressure range from 30 ...
Limitations of a constant pressure-type testing system in determination of gas transport properties of hydrophilic films 来自 国家科技图书文献中心 喜欢 0 阅读量: 27 作者:B Kruczek,T Matsuura 摘要: Permeabilities of dense films made from high molecular weight sulfonated polyphenylene oxide in protonated...
BET constant a1b2/a2b1 is unity only when the differential entropy of adsorption to a standard state on the surface defined by s0 = s1 (the bare fraction of the surface being equal to the fraction covered by one layer of molecules) is equal to the entropy of liquefaction of the ...
Type: for the adsorption of mol.m (gamma The concentration of R (mol.L-1); Is the gas constant The change of surface tension temperature change with solution concentration rate ( Gamma? /? C) T <0, >0, gamma surface layer, the concentration is greater than the concentration of the in...
A method using a headspace autosampler and gas chromatograph (GC) was developed to measure Henry's law constant of volatile organic compounds (VOCs). Equil... J Peng,A Wan - 《Environmental Science & Technology》 被引量: 85发表: 2005年 Improved determination of VOCs in marine biota by using...
Vector of identified parameters (any unit) E Error functional, weighted root mean squared difference (-) λ Thermal conductivity (W/(m K)) V Volume (m3) A Surface area (m2), adsorption potential (J/kg), Amplitude (any unit) R Universal gas constant (J/(mol K)) Rw Specific gas const...
The absolute second-order rate constant for the reaction Na + O3→NaO + O2(k1) has been determined by time-resolved atomic resonance absorption spectroscopy at λ= 589 nm [Na(32PJ) Na(32S1/2)] following pulsed irradiation, coupled with monitoring of O3 by light absorption in the ultra-vi...
Reaction rate constants for the quenching and/or chemical reaction of equilibrated Cd(53P0,1) atoms with several molecules have been determined. The excited atoms were generated by 3261- resonance radiation flash photolysis of cadmium vapor in excess bath gas at 280°, and monitored by kinetic ab...
Thesurfacetensiontendstozerowhentheliquidandgasare separated.Thesurfacetensionoftheliquidisalsorelated tothepurityoftheliquid Inpureliquid (solvent), if the impurity (solute) is added, the surface tension will change, and the change will be great ...
Typical instrumentation conditions: ion spray voltage 5500 V, curtain gas 45 psi, ion source gas 1 and gas 2 at 40 psi and ion source temperature 550 °C. Method validation Validation characteristics were evaluated by evaluating specificity, linearity, limit of detection (LOD), limit of ...