introduction: laser-assisted vaporization of prostate tissue by means of the potassiumtitanyl- phosphate (ktp) laser is in clinical use. alternative laser sources are available but are lacking clinical experience.the 980 nm wavelength diode laser provides good hemostasis, in addition to a more rapid ablation rate. the aim of this study is approving the capability, feasibility, and good post-ope...

During plasma instabilities in tokamak devices, metallic plasma facing components (PFC) can undergo surface melting and vaporization. Macroscopic losses of melt layers developed during these instabilities are of a serious concern to the lifetime of PFC, the damage of nearby components, and potential core plasma contamination. Due to the presence of impurities and dissolved gas, boiling occurs i...

The objective of this study was to obtain vapor pressure and heat of vaporization values of the less volatile heavy end of the Kukersite oil shale primary pyrolysis oil and therefore to have a quantitative insight into the vaporization ability of the oil during the pyrolysis process. The shale oil was produced via rapid pyrolysis in a laboratory scale reactor and collected in a solvent filled c...

The use of correlation-gas chromatography to measure the vaporization enthalpy {∆l Hm(298.15 K)} of complex fuels is demonstrated using RP-1, JP-7, and JP-8, which are all rocket and jet fuels. Vaporization enthalpies of 308, 341, and 441 kJ/kg have been obtained assuming average compositions of C12H23.4, C12H25, and C11H21, respectively. The H/C ratio in these fuels has been measured by 1H NMR...

INTRODUCTION Cytoreduction of all visible disease has been associated with improved survival in patients with advanced-stage ovarian or peritoneal cancer. This is best achieved by minimizing injury to normal tissues. We report on the tumor destruction potential, in an ex vivo model, of a novel energy source that uses an electrically neutral beam of pure plasma to vaporize tissue. METHODS Tumo...

The vaporization enthalpies of 1-methyl-, 1-ethyl-, 1-phenyl-, and 1-benzylimidazole, 1-methyl- and 1-phenylpyrazole, and trans-azobenzene are evaluated by correlation-gas chromatography (C-GC) using a variety of azines and diazines as standards. The vaporization enthalpies obtained by C-GC when compared to literature values are approximately 14 kJ·mol(-1) smaller for the imidazoles and 6 kJ·mo...

PURPOSE We report on the first randomized trial to our knowledge comparing holmium laser ablation and photoselective vaporization of the prostate in patients with a small to moderate size prostate. MATERIALS AND METHODS Between March 2005 and April 2007, 109 patients with lower urinary tract symptoms secondary to benign prostatic hyperplasia and prostate size 60 cc or smaller were randomized ...

BACKGROUND AND PURPOSE While the power needed to initiate bipolar vaporization is higher than conventional monopolar resection, the energy needed to maintain bipolar vaporization is significantly lower and may result in less thermal tissue injury. This may have implications for hemostasis, scarring, and perioperative morbidity. The objective of this study is to assess histopathologic changes in...

A new model for the vapor phase of a pressurized liquid called "the cluster model: which is originally introduced in this work, along with an accurate equation of state for the liquid phase called the LIR, is used to derive an accurate equation for the vapor pressure of liquid as a function of external pressure. The chemical Potential of both phase have been found to be in good agreement wi...