نتایج جستجو برای: net energy

تعداد نتایج: 754208  

2014
Chris G. Antonopoulos Ezequiel Bianco-Martinez Murilo S. Baptista

We present novel results that relate energy and information transfer with sensitivity to initial conditions in chaotic multi-dimensional Hamiltonian systems. We show the relation among Kolmogorov-Sinai entropy, Lyapunov exponents, and upper bounds for the Mutual Information Rate calculated in the Hamiltonian phase space and on bi-dimensional subspaces. Our main result is that the net amount of ...

Journal: :Sustainability 2023

It is often claimed that marine renewable energy alone could meet the electricity demand of current and future human societies. However, such claims are based on highly uncertain estimations global potentials sources (including tidal, ocean currents, wave, offshore wind salinity thermal gradients), do not take into account embedded technologies. To better understand effective potential energy, ...

Journal: :Journal of animal science 2008
S W El-Kadi K R McLeod N A Elam S E Kitts C C Taylor D L Harmon B J Bequette E S Vanzant

This study aimed to establish the relationship between ME intake and energy and nutrient absorption across the portal-drained viscera (PDV) of forage-fed beef steers. Eight Angus (328 +/- 40 kg of BW) steers were surgically fitted with portal, mesenteric arterial, and mesenteric venous catheters, and were fed alfalfa cubes in a replicated 4 x 4 Latin square design with 4 levels of energy intake...

Journal: :ماشین های کشاورزی 0
مرتضی تاکی یحیی عجب شیرچی رضا عبدی محمد اکبرپور

in this research energy efficiency for greenhouse cucumber production in shahreza township located in esfahan province using data envelopment analysis (dea) technique was studied. in this study, data were obtained from 25 randomize active vegetable greenhouses from 60 greenhouses in shahreza township and villages environs. the results showed that the highest and lowest consumed energy were rela...

Journal: :مهندسی بیوسیستم ایران 0
کامران خیرعلی پور عضو هیئت علمی/گروه مهندسی مکانیک بیوسیستم، دانشگاه ایلام. زهرا پاینده دانشگاه ایلام محمود کریمی دانشگاه اراک

in this study, energy consumption pattern, efficiency and the percentage of saved energy and inputs of poultry production farms in isfahan, nain and najafabad townships with different capacities were evaluated. the average of net energy gain per 1000 bird for capacities less than 10, 10-30 and more than 30 thousand pieces was calculated as -143.66, -129.58 and -94.99 gj/1000 bird, respectively....

Journal: :مهندسی بیوسیستم ایران 0
محمد منافی دستجردی دانشجو امیر لاری دانشجو/دانشگاه آزاد واحد علوم تحقیقات تهران

the our purpose of objective is evaluation and comparison the energy flow in wheat lands of cities in alborz province. we try to calculate the indexes of energy ratio, gross energy, specific energy, energy efficiency, energy intensity, total input and output energy. population of the study consisted of farmers of cities in alborz province in the year of 1391-92. it was a best way that we use po...

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