Results 31 to 40 of about 202,313 (303)

CONSTRUÇÃO DA CURVA DE EQUILÍBRIO LÍQUIDO-VAPOR USANDO UMA EQUAÇÃO DE ESTADO CÚBICA: USO DO EXCEL NO ENSINO DE FÍSICO-QUÍMICA

open access: yesQuímica Nova, 2016
Cubic equations of state are able to predict the liquid-vapour coexistence curve of volatile substances. However, this property is rarely used to teach Physical Chemistry because solving the resulting equations require numerical technics and many ...
Josefredo R. Pliego Jr.
doaj   +1 more source

Vapour Pressure Analysis. I

open access: yesNIPPON KAGAKU KAISHI, 1942
固相又は液相の状態を研究せんとして,著者等の新たに唱道した蒸氣壓分析に依り,先づKCl-KBr固溶體の4種の組成に就き590°Cに於ける全蒸氣壓並びに蒸氣の組成を測定した.次に夫れ等固溶體の格子常數を精密に測定した.その結果各鹽類の活動濃度間にはLewisの式が満足に適用することを確めた.又各分壓が示すRaultの法則よりの偏移は格子常數と組成との直線關係よりの偏移と平行なることを見出した.
Zen-ichi SHIBATA, Masao YOSHIYAMA
openaire   +2 more sources

Experimental Study of Pressure and Velocity Fluctuations Induced by Cavitation in a Small Venturi Channel

open access: yesEnergies, 2020
The purpose of this paper is to investigate experimentally the influence of the cavitation extent on the pressure and velocity fluctuations in a small convergent–divergent channel.
Linrong Zhang   +3 more
doaj   +1 more source

The critical assessment of vapour pressure estimation methods for use in modelling the formation of atmospheric organic aerosol [PDF]

open access: yesAtmospheric Chemistry and Physics, 2010
A selection of models for estimating vapour pressures have been tested against experimental data for a set of compounds selected for their particular relevance to the formation of atmospheric aerosol by gas-liquid partitioning. The experimental vapour
M. H. Barley, G. McFiggans
doaj  

Automation of Vapour Pressure Osmometry measurements [PDF]

open access: yesJournal of Analytical Methods in Chemistry, 1991
A program has been developed for the control of Vapour Pressure Osmometry (VPO) measurements. The output signal of a Vapour Pressure Osmometer is read by an A/D converter card installed in one of the expansion slots of a PC microcomputer. The stability of the measurements is checked by analysing the first derivative of the smoothed signals, which is ...
Belaustegi, Y.   +2 more
openaire   +2 more sources

Vapour Pressure of Hexadeuterobenzene [PDF]

open access: yesNature, 1935
THE point at issue between Dr. Sterne and myself is ultimately whether consistency is equivalent to significance or not. Evidently it is not easy to clear it up in a few sentences, and the Editor has invited me to write an article on the whole question of probability which will appear in NATURE shortly.
openaire   +2 more sources

Pressure Build-up in a Diesel Tank Exposed to Fire

open access: yesChemical Engineering Transactions, 2013
In the event of a large hydrocarbon fire in a fuel storage site, atmospheric tanks are exposed to a heat flux of long duration. Accidents experienced in the past (Port Edouard Herriot, Buncefield) shows that large bund fires can last several days.
N. Noel, J. Metayer
doaj   +1 more source

Study of Hg vacancies in (Hg,Cd)Te after THM growth and post-growth annealing by positron annihilation [PDF]

open access: yes, 1990
Positron lifetime measurements have been performed to study vacancy defects in Hg0.78Cd0.22Te. Post-growth annealing under various Hg vapour pressure conditions have been used to create a well-defined number of Hg vacancies.
Gille, Peter   +5 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Zusammensetzung und Dichte der Harnstoffschmelze und der koexistierenden Gasphase

open access: yesCHIMIA, 1975
An experimental method for the determination of the composition and density of the coexisting phases in the vapour-liquid carbon dioxide/ammonia/water equilibrium system at high pressure and temperature is presented. Apart from the elemental analysis of
W. Durisch, A. Buck
doaj   +1 more source

Home - About - Disclaimer - Privacy