Results 21 to 30 of about 7,340,357 (294)

Design and Performance Evaluation of a Lightweight, Cost-Effective Residential Dual-Axis PV Tracking System Under Two Different Climatic Conditions in New Zealand [PDF]

Journal of Renewable Energy and Environment
As demand for clean energy grows, improving PV efficiency in residential systems becomes increasingly important. While dual-axis solar tracking effectively enhances energy capture, its adoption in residential applications remains limited due to high ...
Mustafa Fadhel, Ayman Aldarabie
doaj   +1 more source

Weight gain and dietary intake during pregnancy in industrialized countries - a systematic review of observational studies [PDF]

, 2011
Background: Gestational weight gain (GWG) above the recently recommended ranges is likely to be related to adverse pregnancy outcomes and therefore a challenge in industrialized countries.
Ina Streuling, Kries, Rüdiger von, Streuling, Ina, Rüdiger von Kries, Rosenfeld, Eva, Eva Rosenfeld, Britta Schukat, Beyerlein, Andreas, Schukat, Britta, Andreas Beyerlein   +9 more
core   +1 more source

A Blueprint for Ocean Energy Development 2010-2015 [PDF]

In an effort to foster a collaborative approach to advancing the ocean energy industry, OWET convened the OWET 2010 Developersʼ Summit on September 27 and 28, 2010 in Portland, Oregon.
Oregon Wave Energy Trust
core   +6 more sources

Differenzierung der Unkrautgesellschaften auf unterschiedlichen Bewirtschaftungsintensitäten im Bernburger Anbausystem-Versuch

Julius-Kühn-Archiv, 2020
In einem Feldversuch am Standort Bernburg (Sachsen-Anhalt) wurde untersucht, wie sich Anbausysteme (a1 konventionell, a2 und a3 ökologisch) in zwei Nährstoffstufen auf die Diversität (Shannon - Index), und die Individuenzahlen der Unkräuter insgesamt und
Dankert, Philipp, Pentschew, Silke, Koch, Wernfried, Heyer, Wolfgang   +3 more
doaj   +1 more source

Energy balance related behaviour: personal, home- and friend-related factors among schoolchildren in Europe studied in the ENERGY-project [PDF]

, 2014
To design interventions that target energy balance-related behaviours, knowledge of primary schoolchildren's perceptions regarding soft drink intake, fruit juice intake, breakfast consumption, TV viewing and physical activity (PA) is essential.
Vik, Froydis N., Moreno, L., Saskia J te Velde, Luis Moreno, Singh, A., Singh, A.S., Natasa Jan, Singh, Amika S, Chinapaw, Mai, Bere, Elling, Moreno, Luis, Chinapaw, M., Chin A Paw, M.J.M., Elling Bere, Froydis N Vik, Vik, F.N., Mai Chinapaw, Bringolf-Isler, Bettina, Bringolf-Isler, B., Jan, N., te Velde, Saskia J, Vik, Frøydis N., Jan, Natasa, Yannis Manios, Vik, Froydis N, de Bourdeaudhuij, I., Kovacs, Eva, Amika Singh, Kovacs, E., Te Velde, S. J., Vik, F. N., Brug, Johannes, Johannes Brug, Bere, E., Froydis N. Vik, Brug, J., Manios, Yannis, Bettina Bringolf-Isler, Bringolf-Ilser, Bettina, Te Velde, Saskia J., Chinapaw, Mai JM, Singh, Amika, Ilse De Bourdeaudhuij, Eva Kovacs, De Bourdeaudhuij, Ilse, Bourdeaudhuij, Ilse de, te Velde, S.J., Manios, Y., Saskia J. te Velde   +48 more
core   +1 more source

Biomass production and energy balance of Miscanthus over a period of 11 years: A case study in a large‐scale farm in Poland

GCB Bioenergy, 2019
Giant miscanthus (Miscanthus × giganteus Greef and Deuter) and Amur silver grass (Miscanthus sacchariflorus Maxim./Hack) are rhizomatous grasses with a C4 photosynthetic pathway that are widely cultivated as energy crops.
Bogdan Dubis, Krzysztof Józef Jankowski, Dariusz Załuski, Piotr Bórawski, Władysław Szempliński   +4 more
doaj   +1 more source

Design and Implementation of a Sun Tracker with a Dual-Axis Single Motor for an Optical Sensor-Based Photovoltaic System

Sensors, 2013
The dual threats of energy depletion and global warming place the development of methods for harnessing renewable energy resources at the center of public interest. Solar energy is one of the most promising renewable energy resources.
Chia-Liang Lu, Jing-Min Wang
doaj   +1 more source

Equal-Gain Combining with Unequal Energy Constellations [PDF]

IEEE Transactions on Wireless Communications, 2007
To compute the optimal bias in equal-gain combining (EGC) receivers with unequal energy constellations such as M-ary pulse amplitude modulation (M-PAM) and M-ary square quadrature amplitude modulation (M-QAM), the estimation of the instantaneous fading gain magnitude in each diversity branch is needed, thus defeating the usefulness of EGC.
Ranjan K. Mallik, George K. Karagiannidis   +1 more
openaire   +1 more source

Recommendations concerning energy information model documentation, public access, and evaluation [PDF]

, 1979
In this study we provide an analysis of the factors underlying Congressional concern regarding model documentation, policies for public access, and evaluation procedures of the Energy Information Administration (EIA) and its predecessor agencies; we also
Wood, D.O., Mason, M.J., Wood, David O., Mason, Martha J.   +3 more
core   +1 more source

Potential impact of contrails on solar energy gain [PDF]

Atmospheric Measurement Techniques, 2015
The effect of contrails on global short-wave radiation (sum of direct and downward diffuse solar radiation) and on solar energy gain was investigated. The study was performed during days with high contrail persistence and focused on situations where the ...
P. Weihs, M. Rennhofer, D. J. Baumgartner, J. Gadermaier, J. E. Wagner, J. E. Gehring, W. Laube   +6 more
doaj   +1 more source