نتایج جستجو برای: 2 growing demand for consumption and 3 climate change

تعداد نتایج: 19627972  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده تربیت بدنی علوم ورزشی 1390

this research was conducted to examine the effect of a concurrent training on rest level of leptin of plasma and some hormonal factors in non-athlete subjects. the research population included non-athlete men who didn’t participate in any organized sport activities. 30 men were chosen voluntarily among the above-mentioned population and were divided into 2 groups: experimental (15 subjects) an...

G. Pan J. Wang Q. Luo Q. Yu, Zh. Ouyang,

Water shortage is the primary limiting factor for crop production and long-term agricultural sustainability of the North China Plain. Forage cultivation emerged recently in this region. A fiver-year field experiment studies were conducted at Yucheng Integrated Experiment Station to quantify the water requirement and water use efficiency of seven forage varieties under climate variability, that ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2017
Maximilian Auffhammer Patrick Baylis Catherine H Hausman

It has been suggested that climate change impacts on the electric sector will account for the majority of global economic damages by the end of the current century and beyond [Rose S, et al. (2014) Understanding the Social Cost of Carbon: A Technical Assessment]. The empirical literature has shown significant increases in climate-driven impacts on overall consumption, yet has not focused on the...

Journal: :Ambio 2005
H Ricardo Grau T Mitchell Aide N Ignacio Gasparri

Deforestation ?1 is the product of complex interaction among local idiosyncratic properties of natural and social systems and driving forces that commonly operate at large spatial scales (1). Social and economic globalization, particularly reduced communication and transportation barriers, has increased the relative importance of global drivers of environmental change (e.g. deforestation). For ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Christoph Müller Wolfgang Cramer William L Hare Hermann Lotze-Campen

The Intergovernmental Panel on Climate Change (IPCC) assessment of major risks for African agriculture and food security caused by climate change during coming decades is confirmed by a review of more recent climate change impact assessments (14 quantitative, six qualitative). Projected impacts relative to current production levels range from -100% to +168% in econometric, from -84% to +62% in ...

2009
C.-Y. Cynthia Lin Lea Prince Paul Leiby Ian Parry

This paper calculates the optimal gasoline tax for the state of California. According to our analysis, the optimal gasoline tax in California is $1.37/gallon, which is over 3 times the current California tax when excluding sales taxes. The Pigovian tax is the largest part of this tax, comprising $0.85/gallon. Of this, the congestion externality is taxed the most heavily, at $0.27, followed by o...

Journal: :محیط زیست طبیعی 0
سمیه حدادی نیا کارشناس ارشد محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، ایران افشین دانه کار دانشیار گروه محیط زیست، دانشکدۀ منابع طبیعی، دانشگاه تهران، ایران کورش عشقی استاد دانشکدۀ صنایع، دانشگاه صنعتی شریف، تهران، ایران علی اصغر درویش صفت استاد دانشکدۀ منابع طبیعی، دانشگاه تهران، تهران، ایران محمد کابلی دانشیار دانشکدۀ منابع طبیعی، دانشگاه تهران، تهران، ایران

tourism as a growing industry needs special attention in developing countries. during last decades, nature based tourism has been growing faster than other tourism fields and it seems to grow even faster. ever growing demand for nature based tourism emphasizes the necessity of a holistic planning for preserving environment against degradation. objective of this study is to present a nature base...

2010
Philip J Ward Kenneth M Strzepek W Pieter Pauw Luke M Brander Gordon A Hughes Jeroen C J H Aerts

Despite growing recognition of the importance of climate change adaptation, few global estimates of the costs involved are available for the water supply sector. We present a methodology for estimating partial global and regional adaptation costs for raw industrial and domestic water supply, for a limited number of adaptation strategies, and apply the method using results of two climate models....

2010
Serge M. Garcia Andrew A. Rosenberg

World population is expected to grow from the present 6.8 billion people to about 9 billion by 2050. The growing need for nutritious and healthy food will increase the demand for fisheries products from marine sources, whose productivity is already highly stressed by excessive fishing pressure, growing organic pollution, toxic contamination, coastal degradation and climate change. Looking towar...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

chapters 1 and 2 establish the basic theory of amenability of topological groups and amenability of banach algebras. also we prove that. if g is a topological group, then r (wluc (g)) (resp. r (luc (g))) if and only if there exists a mean m on wluc (g) (resp. luc (g)) such that for every wluc (g) (resp. every luc (g)) and every element d of a dense subset d od g, m (r)m (f) holds. chapter 3 inv...

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