نتایج جستجو برای: effective parameters

تعداد نتایج: 1219590  

Journal: :international journal of environmental research 0
m.a. abdoli graduate faculty of environment, tehran university tehran, iran f. mohamadi graduate faculty of environment, tehran university tehran, iran b. ghobadian dept. of mechanics engineering of agricultural machinery, tarbiat modares university, iran e. fayyazi dept. of mechanics engineering of agricultural machinery, tarbiat modares university, iran

using low-cost feedstocks such as rendered animal fats in biodiesel production willreducebiodieselexpenditures. one of the low-cost feedstocksfor biodiesel production could be the fatextracted from poultry feathers producedin slaughterhouses abundantly. this paper describes a new andenvironmentally friendly process for developing biodiesel production technology from feather waste producedin pou...

Journal: :international journal of environmental research 2014
m.a. abdoli f. mohamadi b. ghobadian e. fayyazi

using low-cost feedstocks such as rendered animal fats in biodiesel production willreducebiodieselexpenditures. one of the low-cost feedstocksfor biodiesel production could be the fatextracted from poultry feathers producedin slaughterhouses abundantly. this paper describes a new andenvironmentally friendly process for developing biodiesel production technology from feather waste producedin pou...

The environmental pollution crisis caused by the excessive use of fossil fuels and the risk of the destruction of natural resources and reserves, as well as the excessive production of greenhouse gases and, consequently, global warming, led many energy researchers to use renewable energy As a fossil fuel alternative. Solar chimneys are one of the types of renewable energies that have been taken...

1998
Wayne A. Shiroma Zoya Basta Popović

A method for assessing and optimizing the feedback level in a transistor-grid oscillator is presented. Based on the approximate large-signal S-parameters of the transistor, an equivalent circuit model for the grid is synthesized for maximum oscillator power. The resulting circuit serves as a convenient benchmark for determining the level of feedback for a given grid. Experimental results are pr...

ژورنال: مرتع 2023

Abstract Background and objectives: Access to real information and data on the impact of watershed management projects and their technical and economic evaluation is possible through representative and paired catchments. Since management operations and topographic characteristics have a great impact on carbon retention in ecosystems, this study aimed to determine the amount of soil organic ca...

2007
MARTIN L. MARTENS JENNIFER E. JENNINGS

The authors contributed equally to this paper and are listed in increasing order of seniority. We are grateful to Hillary Higgins, Jason Moschella, and Melissa Toffanin for their research assistance, and to Kai Lamertz, Mike Lounsbury, Noam Wasserman and three anonymous reviewers for their valuable feedback on earlier versions of this work. We recognize the funding provided by the Entrepreneuri...

Journal: :Photonics and Nanostructures - Fundamentals and Applications 2010

Journal: :Applied sciences 2021

Focal vibration therapy can provide neurophysiological benefits. Unfortunately, standardized protocols are non-existent. Previous research presents a wide range of with effectiveness. This paper is part broader effort to identify effective, for focal therapy. In this study, the authors evaluated characteristics (frequency and peak-to-peak intensity) four commercially available devices: (1) Vibr...

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