نتایج جستجو برای: maximum relative humidity

تعداد نتایج: 677967  

Journal: :environmental resources research 0
mehdi sarparast , gorgan university of agricultural sciences and natural resources muosa hesam gorgan university hamidraza asgari gorgan university

the fact that water is the most important factor of life on earth is not a new concept. alteration and reduction in the amount of precipitation, population explosion and contamination of underground water pressurize governments severely to find solution for water resources. the air moisture is one of fresh water resources which has not been noticed and well exploited. in this study proper place...

2015
John Ojur Dennis Abdelaziz Yousif Ahmed Mohd Haris M. Khir

This paper reports on the fabrication and characterization of a Complementary Metal Oxide Semiconductor-Microelectromechanical System (CMOS-MEMS) device with embedded microheater operated at relatively elevated temperatures (40 °C to 80 °C) for the purpose of relative humidity measurement. The sensing principle is based on the change in amplitude of the device due to adsorption or desorption of...

2003
W. Haag B. Kärcher J. Ström A. Minikin U. Lohmann A. Stohl

Freezing thresholds and cirrus cloud formation mechanisms inferred from in situ measurements of relative humidity W. Haag, B. Kärcher, J. Ström, A. Minikin, U. Lohmann, J. Ovarlez, and A. Stohl Deutsches Zentrum für Luftund Raumfahrt (DLR), Institut für Physik der Atmosphäre (IPA), Oberpfaffenhofen, Germany Stockholm University, Institute of Applied Environmental Research (ITM), Stockholm, Swed...

2010
W. Ingram Y. Tsushima M. Satoh M. Roberts P. L. Vidale P. A. O'Gorman Steven C. Sherwood William Ingram Yoko Tsushima Masaki Satoh Malcolm Roberts Pier Luigi Vidale Paul A. O’Gorman

[1] Key climate feedback due to water vapor and clouds rest largely on how relative humidity R changes in a warmer climate, yet this has not been extensively analyzed in models. General circulation models (GCMs) from the CMIP3 archive and several higher‐ resolution atmospheric GCMs examined here generally predict a characteristic pattern of R trend with global temperature that has been reported...

2007
Raymond T. Pierrehumbert Hélène Brogniez Rémy Roca

Water is a nearly miraculous molecule that enters into the operation of the climate system in a remarkable variety of ways. A wide-ranging overview can be found in Pierrehumbert (2002). In the present chapter, we will be concerned only with the radia-tive effects of atmospheric water vapor on climate, and with the kinematics of how the water vapor distribution is maintained. These effects are i...

2002
CK Wilkins P Wolkoff PA Clausen M Hammer GD Nielsen

Earlier, we reported the formation of unidentified strong irritants in reaction mixtures of terpenes and ozone. The identified products included aldehydes, ketones and carboxylic acids. Here we report the effects of relative humidity and reaction time on irritant formation in our flow reaction system using limonene and isoprene. Upper airway irritation was measured in mice (via reduction of res...

2016
V. Koteswara Rao

Biodeterioration of poultry feed by fungal load due to improper storage is a major concern. The present investigation was carried out to determine the effect of relative humidity (RH) on biodeterioration of poultry feed, biochemical changes and ochratoxin A (OTA) production by Penicillium species examined during September 2009 to July 2010. All the relative humidities studied were supported 16 ...

2006
L. F. Arauz T. B. Sutton

Arauz, L. F., and Sutton, T. B. 1989. Influence of temperature and moisture on germination of ascospores and conidia of Botryosphaeria obtusa. Phytopathology 79:667-674. Maximum germination of conidia of Botryosphaeria obtusa occurred requirements for germination. Requirements for ascospore germination in free water and declined as relative humidity (RH) was reduced from were similar to those f...

Journal: :روش های عددی در مهندسی (استقلال) 0
محمدتقی کاظمی m. t. kazemi

realistic prediction of concrete shrinkage and creep requires the calculation of the distributions of relative humidity at various times. although the distributions of the relative humidity can be computed by numerical methods from the differential equation for diffusion, simple prediction formulas can facilitate structural analysis. the purpose of this paper is to present a simple formula for ...

2015
A. Skupin

Introduction Conclusions References Tables Figures

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