نتایج جستجو برای: energy productivity

تعداد نتایج: 746847  

2009
MATHIS WACKERNAGEL CHAD MONFREDA

biocapacity The potential productivity of the biologically productive space within a specified country, region, or territory. biologically productive space Areas of land and water capable of supporting photosynthesis at sufficient rates to provide economically useful concentrations of biomass. Marginal and unproductive regions, such as deserts, tundra, and the deep oceans, are excluded. The glo...

Journal: :The Ceylon medical journal 2003
I Hettiarachchi

OBJECTIVE To assess the impact of nutritional status on productivity of tea pluckers. DESIGN Cross-sectional, analytical. SETTING AND PARTICIPANTS OF STUDY: All tea pluckers in five divisions of a tea estate in Hatton. MEASUREMENTS A dietary survey was conducted using the 24 h dietary recall method. Nutritional status was assessed by measurement of body mass index (BMI) and haemoglobin (Hb)...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه لرستان - دانشکده علوم پایه 1393

در این تحقیق اثر الکترونگاتیوی برای استخلاف های f, cl, no2 , cf3 برروی آروماتیسیته مولکول بنزن مورد مطالعه قرار گرفته است. nics, ase, homa, homo-lumo energy gapsشاخص هایی هستند که برای نمایش تاثیر استخلاف ها به کار برده می¬شوند.علاوه بر این الکترون های انتقالی توسط پیوند سیگما وپای نیز برای همه مولکول های استخلاف شده مورد نظر محاسبه شده¬اند.نتایج بدست آمده برای این روش ها با یکدیگر متفاوت است.ب...

2003
Théophile Azomahou Raouf Boucekkine Phu Nguyen

We rst provide an empirical study of the energy-saving technological progress on the ENERDATA database. Energy intensity is shown to decrease over the period 1971-1999 in OECD countries, indicating a signi cant energy-saving technical progress trend. We also show via semi-parametric partially linear estimations that: (i) this trend is positively correlated with the investment rate, and (ii) the...

2005
Kevin J. Fox

The problem of assessing the impact of firm entry and exit on aggregate productivity growth is addressed. The proposed method overcomes some problems with currently proposed methods. The paper also addresses some of the problems involved in aggregating outputs and inputs when firms enter and exit so that the one output and one input aggregate productivity decompositions can be applied. It turns...

2017
Sumanta Bid

PH (Puissance de Hydrogen) is an essential ingredient of soil that effects on fertility and productivity of dirt. Barddhaman district is a part of Lower Gangetic Plain fully covered by alluvial soil and popularly known as 'rice bowl of West Bengal' owing to its lofty production. This data article provides a block level data on soil PH that is essential for further investigation of the relations...

2010
Lifang Du Xuezhong Zhang

Morphological productivity is one of the key issues in the study of derivational morphology. This paper makes a survey of the quantitative measurements of morphological productivity so far proposed by different scholars, and tentatively attempts to point out the pros and cons and also feasibility of each measurement, with a view to provide some assistance for the future researcher who is going ...

2012
Eleonora Sforza Diana Simionato Giorgio Mario Giacometti Alberto Bertucco Tomas Morosinotto

Biofuels from algae are highly interesting as renewable energy sources to replace, at least partially, fossil fuels, but great research efforts are still needed to optimize growth parameters to develop competitive large-scale cultivation systems. One factor with a seminal influence on productivity is light availability. Light energy fully supports algal growth, but it leads to oxidative stress ...

Journal: :Nutrition reviews 2006
Patrick J O'Connor

Conceptualizing mental energy as a mood is impor tant, because these feelings are important to people and can influence behavior in the real world. If a person feels a lack of energy, for example, he or she is more likely to avoid physical or mental work if it is possible to do so. Alternatively, this person may seek to improve feelings of energy by eating, drinking, taking dietary supplements ...

2016
Huan Zhang Kangning Xu

This research aims to study the main influencing factors of China’s industrial carbon productivity by incorporating environmental regulation and technical progress into an econometric model. The paper focuses on data from 35 of China’s industrial sectors and covers the period from 2006 to 2014, in order to examine the impact of environmental regulation and technical progress on carbon productiv...

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