نتایج جستجو برای: vaporization

تعداد نتایج: 2459  

Journal: :American journal of obstetrics and gynecology 2003
Paolo Vercellini Charles Chapron Olga De Giorgi Dario Consonni Giada Frontino Pier Giorgio Crosignani

A systematic review was undertaken to determine whether coagulation or laser vaporization of endometriomas is associated with an increase in the risk of cyst recurrence compared with excision of the pseudocapsule. In the four comparative trials identified, endometrioma recurrence was reported in 39 of 212 (18.4%) women treated with coagulation or laser vaporization compared with 19 of 295 (6.4%...

2007
James Chickos Tracy Wang Esseim Sharma

The temperature dependence of gas chromatographic retention times of tetracontane to hexaheptacontane is reported. These data are used in combination with earlier work to evaluate the vaporization enthalpies and vapor pressures of these n-alkanes from T ) (298.15 to 540) K. The vapor pressure and vaporization enthalpy results obtained are compared with data calculated by the program PERT2 and A...

Journal: :Fluid Phase Equilibria 2009

2015
R. Colin

The mass spectromctnc study of the vaporization of the compounds GeO (hex) and GeO(am) and of the mixture GeO (hex) + Ge(c) made it *Z possible to establish their mode of vaporization: Ge02(hex) GeO(g) + 1/20 (I) n GeO(am) (GeO) (g) (n 1. 2. 3) (II) n n/2 GeOJhex) + n/2 Ge(c) (GeO) (g) (n = 1,2,3) (III) c. n The enthalpies of vaporization are AH° (I) 121. 2± 1.6 kcal/mole AH» (II, n=l) = 53.4 ±...

2004
James S. Chickos Hui Zhao Gary Nichols

9 Vapor pressures and vaporization enthalpies for methyl heptadecanoate and methyl heneicosanoate to methyl octacosanoate exclusive of methyl tricosanoate are evaluated as a function of temperature over the temperature range T= 298.15–450 K by correlation gas chromatography. The results are generated by an extrapolative process using literature values for methyl tetradecanoate to methyl eicosan...

Journal: :The journal of physical chemistry. A 2008
Sergey P Verevkin Vladimir N Emel'yanenko Svetlana A Kozlova

This work has been undertaken in order to obtain data on thermodynamic properties of organic carbonates and to revise the group-additivity values necessary for predicting their standard enthalpies of formation and enthalpies of vaporization. The standard molar enthalpies of formation of dibenzyl carbonate, tert-butyl phenyl carbonate, and diphenyl carbonate were measured using combustion calori...

2012
Joe A. Wilson James Chickos

The vaporization enthalpy of valproic acid (2-propylpentanoic acid) is reported, and the vapor pressures of a series on aliphatic carboxylic acids are used to evaluate its vapor pressure as a function of temperature. The vaporization enthalpy was derived by correlation-gas chromatography. This resulted in a vaporization enthalpy, ΔHvap(298.15 K) of (74.8 ± 2.4) kJ·mol−1. Vapor pressures from T/...

2010
Myungsun Shim Taekmin Kwon Seong Chul Kim Seong-Heon Ha Tai Young Ahn

PURPOSE The prostate-specific antigen (PSA) level decreases after transurethral resection of the prostate (TURP). However, changes in the PSA level after potassium-titanyl-phosphate (KTP) laser vaporization of the prostate are not well known. The aim of this study was to investigate the effect of KTP laser vaporization of the prostate on PSA levels in patients with benign prostatic hyperplasia ...

2012
LEY SAMUEL J. BRIAN FOWLKES JOSEPH BULL

Submitted for the DFD09 Meeting of The American Physical Society Acoustic Droplet Vaporization through PDMS DAVID LI, STANLEY SAMUEL, J. BRIAN FOWLKES, JOSEPH BULL, The University of Michigan — Acoustic droplet vaporization (ADV) involves the generation of bubbles from albumin-encapsulated perfluorocarbon (PFC) droplets that have been insonated with high intensity ultrasound (US). Gas embolothe...

Journal: :Physical chemistry chemical physics : PCCP 2014
Mathias Ahrenberg Marcel Brinckmann Jürn W P Schmelzer Martin Beck Christin Schmidt Olaf Kessler Udo Kragl Sergey P Verevkin Christoph Schick

The determination of vaporization enthalpies of extremely low volatility ionic liquids is challenging and time consuming due to the low values of vapor pressure. In addition, these liquids tend to decompose even at temperatures where the vapor pressure is still low. Conventional methods for determination of vaporization enthalpies are thus limited to temperatures below the decomposition tempera...

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