Results 21 to 30 of about 599,718 (310)

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

open access: yes, 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.   +48 more
core   +1 more source

Differenzierung der Unkrautgesellschaften auf unterschiedlichen Bewirtschaftungsintensitäten im Bernburger Anbausystem-Versuch

open access: yesJulius-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   +3 more
doaj   +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

open access: yesGCB 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   +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

open access: yesSensors, 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

Gain-gain and gain-lossless PT-symmetry broken from PT-phase diagram

open access: yes, 2022
Parity-time (PT) symmetry and broken in micro/nano photonic structures have been investigated extensively as they bring new opportunities to control the flow of light based on non-Hermitian optics.
Yali Jia (251680)   +7 more
core   +1 more source

Efficiency Focused Energy Management Strategy Based on Optimal Droop Gain Design for More Electric Aircraft

open access: yes, 2022
Due to the substantial increase of the number of electrically-driven systems on-board More Electric Aircraft (MEA), the on-board Electric Power Systems (EPS) are becoming more and more complex.
Hussaini, Habibu   +6 more
core   +1 more source

Equal-Gain Combining with Unequal Energy Constellations [PDF]

open access: yesIEEE 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   +1 more
openaire   +1 more source

Potential impact of contrails on solar energy gain [PDF]

open access: yesAtmospheric 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   +6 more
doaj   +1 more source

Predicting Adaptations to Resistance Training Plus Overfeeding Using Bayesian Regression: A Preliminary Investigation

open access: yesJournal of Functional Morphology and Kinesiology, 2021
Relatively few investigations have reported purposeful overfeeding in resistance-trained adults. This preliminary study examined potential predictors of resistance training (RT) adaptations during a period of purposeful overfeeding and RT.
Robert W. Smith   +10 more
doaj   +1 more source

Resource Transitions and Energy Gain: Contexts of Organization

open access: yesEcology and Society, 2003
Energy gain constrains resource use, social organization, and landscape organization in human and other living systems. Changes in energy gain have common characteristics across living systems.
Joseph A. Tainter   +3 more
doaj   +1 more source

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