Results 41 to 50 of about 292,701 (300)

Exergy analysis of a direct-expansion solar-assisted heat pump system considering the effects of pressure drop of the R134a refrigerant flow [PDF]

مجله مدل سازی در مهندسی, 2018
In this paper, the exergy analysis of a direct-expansion solar-assisted heat pump system (DX-SAHP) has been presented considering the effects of the pressure drop associated with the ï‌‚ow of R134a refrigerant through the condenser, collector/ evaporator
Sobhan Fathollahi, Habibollah Safarzadeh
doaj   +1 more source

Secular dynamics around small bodies with solar radiation pressure [PDF]

Communications in Nonlinear Science and Numerical Simulation, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Feng, J., Hou, X.-Y.
openaire   +3 more sources

Effect of weather conditions on somatic cell score in Sicilian Valle del Belice ewes

Italian Journal of Animal Science, 2010
Mastitis susceptibility of Valle del Belice ewes from the south of Sicily to temperature, humidity, precipitation, solar radiation, sun hours, air pressure, wind-speed and wind-direction measured by a public weather station was investigated using 65,848 ...
B. Portolano, J. B. C. H. M. van Kaam, R. Finocchiaro   +2 more
doaj   +1 more source

Solar Radiation Pressure Modeling and Application of BDS Satellites [PDF]

Journal of Geodesy and Geoinformation Science, 2020
Solar radiation pressure (SRP) model is the basis of high precise orbit determination and positioning of navigation satellites. At present, it is common to see the study of SRP model of BDS satellites.
Qiuli CHEN,Hui YANG,Zhonggui CHEN,Haihong WANG,Chen WANG
doaj   +1 more source

Electrochromic orbit control for smart-dust devices [PDF]

, 2012
Recent advances in MEMS (micro electromechanical systems) technology are leading to spacecraft which are the shape and size of computer chips, so-called SpaceChips, or ‘smart dust devices’.
Atchison J. A., Camilla Colombo, Charlotte Lücking, Colin R. McInnes, Colombo C., De Juan Ovelar M., Kawaguchi J., Krivov A. V., Lücking C., Oyama T., Schaub H., Stark J. P. W.   +11 more
core   +1 more source

Pc5 Magnetic Pulsations during the Outer Electron Radiation Belt

International Journal of Technology, 2014
Since the discovery of the radiation belt decades ago, there still remain some fundamental questions as to which one is the mechanism responsible for the acceleration of electrons. Ground-based Pc5 magnetic pulsation during the process of increasing of 2-
L. Muhammad Musafar K, Triyanta, W. Sugitomo, A. Yoshikawa, T. Uozumi   +4 more
doaj   +1 more source

Evapotranspiration Estimation Using Machine Learning Methods

Journal of Horticultural Research, 2023
The study examined the performance of four machine learning algorithms (regression trees, boosted trees, random forests, and artificial neural networks) for estimating evapotranspiration (ETo) based on incomplete meteorological data.
Treder Waldemar, Klamkowski Krzysztof, Wójcik Katarzyna, Tryngiel-Gać Anna   +3 more
doaj   +1 more source

Atmospheric Factors Affecting Global Solar and Photosynthetically Active Radiation Relationship in a Mediterranean Forest Site

Atmosphere, 2022
Light availability and its composition in components affecting plant growth as photosynthetically active radiation (PAR), are of critical importance in agricultural and environmental research.
Nikolaos D. Proutsos, Aristotle Liakatas, Stavros G. Alexandris, Ioannis X. Tsiros, Dimitris Tigkas, George Halivopoulos   +5 more
doaj   +1 more source

Microscopic Approach to Analyze Solar-Sail Space-Environment Effects

, 2008
Near-sun space-environment effects on metallic thin films solar sails as well as hollow-body sails with inflation fill gas are considered. Analysis of interaction of the solar radiation with the solar sail materials is presented.
Abramov, Berger, Bethe, Causey, Gregory L. Matloff, Hubbell, Janhunen, Jones, Kezerashvili, Kezerashvili, Kezerashvili, Koblik, Matloff, Matloff, McInnes, McInnes, Michalsky, Murphy, Obanian, Roman Ya. Kezerashvili, Salama, Strobl, Vulpetti   +22 more
core   +1 more source

A Comparative Evaluation of Artificial Neural Network and Sunshine Based models in prediction of Daily Global Solar Radiation of Lalibela, Ethiopia

Cogent Engineering, 2022
Due to a lack of solar radiation measurement instruments in various regions across the world, particularly in Ethiopia, many empirical models have been developed to estimate global solar radiation. Reliable global solar radiation information is essential
Tegenu Argaw Woldegiyorgis, Ashenafi Admasu, Natei Ermias Benti, Ashenafi Abebe Asfaw   +3 more
doaj   +1 more source