Results 51 to 60 of about 152,932 (167)

Energy Efficiency Analysis and Modeling the Relationship between Energy Inputs and Wheat Yield in Iran [PDF]

open access: yesInternational Journal of Agricultural Management and Development, 2015
Wheat is the dominant cereal crop constituting the first staple food in Iran. This paper studies the energy consumption patterns and the relationship between energy inputs and yield for Wheat production in Iranian agriculture during the period 1986 –
Fakher Kardoni   +2 more
doaj  

Energy Input in the Production of Cassava

open access: yesEnergy and Environment Research, 2015
Energy is one of the largest components of the production cost in Agricultural activities. The efficiency of its use will often be compromised in favour of other equally important factors. Data were collected in 10 cassava farms by using face to face questionnaire method to determine the energy input in cassava production. Mathematical expressions were
A. Isaac Bamgboye, Babajide S. Kosemani
openaire   +2 more sources

Tracing energy inputs into the seafloor using carbonate sediments. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Smith BP, Edie SM, Fischer WW.
europepmc   +1 more source

HYSTERETIC ENERGY TO ENERGY INPUT RATIO SPECTRUM IN NONLINEAR SYSTEMS

open access: yesDeu Muhendislik Fakultesi Fen ve Muhendislik, 2016
Literatürde histeretik enerji (EH)/enerji oranı (EI) için bazı ampirik bağıntılar olmasına rağmen, tüm bu bağıntılar anılan oranı her bir periyot aralığı için sabit kabul etmekte ve deprem yer hareketi özellikleri veya yapısal özellikleri gözönüne almamaktadır. Bu çalışma, doğrusal olmayan tek serbestlik dereceli sistemler için EH/EI oranlarının hesabı
AKBAŞ, Bülent   +3 more
openaire   +3 more sources

Energy Efficient Transceiver Design for NOMA VLC Downlinks with Finite-Alphabet Inputs

open access: yesApplied Sciences, 2018
Non-orthogonal multiple access (NOMA) is considered as a promising technique in visible light communication (VLC) systems for performance enhancement.
Zhen-Yu Wang, Hong-Yi Yu, Da-Ming Wang
doaj   +1 more source

Evaluation of Energy Efficiency of Conventional and Mechanized Farmimg System on Potato Production in East Azarbyjan Province

open access: yesپژوهشهای زراعی ایران, 2011
The aims of this study were to evaluation and comparison energy consumption of input and output to potato production by systems of conventional and mechanized farmimg.
M. Izadkhah   +2 more
doaj   +1 more source

Model-based calibration of the elasticity of substitution in energy under high flexibility

open access: yesEnergy Strategy Reviews
Macroeconomic models of the energy transition depend crucially on elasticity of substitution (EOS) parameters between dirty and clean energy inputs, which are, however, hard to calibrate for future energy systems. Thus, in this paper, we seek determining
Thomas Baldauf   +3 more
doaj   +1 more source

Energy input and food output: The energy imbalance across regional agrifood systems

open access: yesPNAS Nexus
Abstract Biomass was the principal energy source in preindustrial societies; their agriculture provided more energy than it required. Thus, the energy return on energy investment (EROEI) needed to be >1. Recent studies have indicated that this may not be the case for modern industrialized agrifood systems (AFSs).
Kajwan Rasul   +4 more
openaire   +4 more sources

Energy inputs imprint seasonality and fractal structure on river metabolic regimes

open access: yesLimnology and Oceanography Letters
The temporal structures of gross primary production (GPP) and ecosystem respiration (ER) vary across time scales in response to complex interactions among dynamic drivers (e.g., flow, light, temperature, organic matter supply).
Yuseung Shin   +2 more
doaj   +1 more source

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