نتایج جستجو برای: water vapor permeability response surface

تعداد نتایج: 2060353  

Journal: :پژوهش های جغرافیای طبیعی 0
حسین عساکره دانشیار اقلیم شناسی دانشگاه زنجان، زنجان، ایران مهدی دوستکامیان دانشجوی دکتری تغییرات آب وهوایی دانشگاه زنجان، زنجان، ایران هوشنگ قائمی استاد هواشناسی وابسته به پژوهشکدة هواشناسی ایران، ایران

extended abstractintroductionwater vapor is considered to be one of more significant atmospheric constituents as it contributes in precipitation and is also a critical element of the climate system. this climate element extended from earth surface to upper level of troposphere that potentially precipitable. accordingly it called perceptible water. therefore the total atmospheric water vapor con...

2012
Kenneth G. Libbrecht

We describe a novel crystal growth instability that enhances the development of thin edges, promoting the formation of plate-like or hollow columnar morphologies. This instability arises when diffusion-limited growth is coupled with structure-depdendent attachment kinetics, specifically when the nucleation barrier on a facet surface decreases substantially as the facet width approaches atomic d...

1999
HUI WANG RONG FU

This study examines the interannual variability of winter upper-troposphere water vapor over the Northern Hemisphere using the National Aeronautics and Space Administration Water Vapor Project, the International Satellite Cloud Climatology Project data, and the European Centre for Medium-Range Weather Forecasting reanalysis. The El Niño–Southern Oscillation related tropical sea surface temperat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

2002
WILLIAM J. O’BRIEN

Anomalous liquid behavior is viewed as a result of an increase in surface tension in isolated capillaries. Using a derived prime equation for this change several phenomena are treated including the strength of liquid bridges between solids, the lowering of vapor pressure, increased solubility, and adsorption-desorption hysteresis. Using experimental data available on thestrengthofliquid bridges...

2017
Andrii V. Uklein Volodymyr V. Multian Bogdan V. Oliinyk Volodymyr V. Doroshchuk Sergei A. Alekseev Volodymyr V. Lysenko Mykhailo S. Brodyn Volodymyr Ya. Gayvoronsky

The porous silicon (PS) surface modification diagnostics due to functionalization and water adsorption/desorption processes were provided by the self-action effects of picosecond range pulsed laser radiation at 1064 nm. It was shown that the PS surface functionalization-oxide removal, alkylation, and oxidation-resulted in a refractive nonlinear optical (NLO) response sign turn to self-focusing ...

Journal: :Optics express 2010
K B Mao H T Li D Y Hu J Wang J X Huang Z L Li Q B Zhou H J Tang

An algorithm based on the radiance transfer model (RM) and a dynamic learning neural network (NN) for estimating water vapor content from moderate resolution imaging spectrometer (MODIS) 1B data is developed in this paper. The MODTRAN4 is used to simulate the sun-surface-sensor process with different conditions. The dynamic learning neural network is used to estimate water vapor content. Analys...

2012
Pamela L. Dickrell N. Argibay Osman L. Eryilmaz Ali Erdemir Gregory Sawyer

Microtribological measurements of a hydrogenated diamondlike carbon film in controlled gaseous environments show that water vapor plays a significant role in the friction coefficient. These experiments reveal an initial high friction transient behavior that does not reoccur even after extended periods of exposure to low partial pressures of H2O and O2. Experiments varying both water vapor press...

2001
ALEXANDER E. MACDONALD YUANFU XIE RANDOLPH H. WARE

In recent years techniques have been developed to obtain integrated water vapor along slant paths between ground-based Global Positioning System (GPS) receivers and the GPS satellites. Results are presented of an observing system simulation (OSS) to determine whether three-dimensional water vapor fields could be recovered from a high-resolution network (e.g., with 40-km spacing) of GPS receiver...

2015
Paul R. Jones Xiuqing Hao Eduardo R. Cruz-Chu Konrad Rykaczewski Krishanu Nandy Thomas M. Schutzius Kripa K. Varanasi Constantine M. Megaridis Jens H. Walther Petros Koumoutsakos Horacio D. Espinosa Neelesh A. Patankar

Rough surfaces immersed under water remain practically dry if the liquid-solid contact is on roughness peaks, while the roughness valleys are filled with gas. Mechanisms that prevent water from invading the valleys are well studied. However, to remain practically dry under water, additional mechanisms need consideration. This is because trapped gas (e.g. air) in the roughness valleys can dissol...

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