نتایج جستجو برای: degradation indicators

تعداد نتایج: 258369  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده کشاورزی 1390

تخریب منابع طبیعی و محیط زیست از مهمترین دغدغه ها در مناطق مختلف جهان خصوصا نواحی خشک می باشد. بطوریکه سطوح وسیعی از این اراضی در طیف گسترده ای از فرآیندهای تخریب در حال نابودی می باشد. از این رو ارزیابی و تهیه نقشه آسیب پذیری به زوال پوشش گیاهی در کشورمان می تواند بسیار زیاد ما را در برنامه ریزیهای مدیریتی و اجرایی یاری نماید. درتحقیق حاضرمعیارهای مورد استفاده در یک مدل جدید برای ارزیابی زوال ...

2000
J. Dumanski

Indicators of land quality (LQIs) are being developed as a means to better coordinate actions on land related issues, such as land degradation. Economic and social indicators are already in regular use to support decision making at global, national and sub-national levels and in some cases for air and water quality, but few such indicators are available to assess, monitor and evaluate changes i...

2015
Xinghui Zhang Lei Xiao Jianshe Kang

Tracking degradation of mechanical components is very critical for effective maintenance decision making. Remaining useful life (RUL) estimation is a widely used form of degradation prediction. RUL prediction methods when enough run-to-failure condition monitoring data can be used have been fully researched, but for some high reliability components, it is very difficult to collect run-to-failur...

Journal: :I. J. Bifurcation and Chaos 2005
Shujun Li Guanrong Chen Xuanqin Mou

When chaotic systems are realized with finite precisions in digital computers, their dynamical properties are often found to be entirely different from the original versions in the continuous setting. In the literature, there does not seem to be much work on quantitative analysis of such degradation of digitized chaos and how to reduce its negative influence on chaos-based digital systems. Focu...

Journal: :Journal of the science of food and agriculture 2011
Feng Huang Ming Huang Xinglian Xu Guanghong Zhou

BACKGROUND Heating temperature is an important factor affecting meat palatability. This study aimed to evaluate the influence of heating temperature on some eating quality indicators, protein degradation and ultrastructure of pork muscle fibres and their correlations. RESULTS Cooking loss (CL) increased gradually (P < 0.05) with increasing temperature. Warner-Bratzler shear force (WBSF) incre...

ژورنال: علوم آب و خاک 2012
فرهاد خرمالی, , محمد عجمی, ,

In order to study land degradation from the soil genesis and micromorphological perspective, ten soil profiles were dug and described on five slope positions in both forest and deforested cultivated land. The soil samples were taken from all horizons for physico-chemical analysis and micromorphological studies. Forest soils had a well developed argillic and calcic horizons and also mollic epipe...

2004
Mark McGillivray Susan Harkness

A plethora of what are loosely described as social and political indicators of well-being exist. Both the range and country coverage of these indicators has increased appreciably in recent years. In this paper we ask what contribution these indicators can make towards our understanding of human well-being. There is currently a vast array of political and social indicators of development. These ...

Journal: :Ecological applications : a publication of the Ecological Society of America 2008
Mark S Reed Andrew J Dougill Timothy R Baker

Given the growing popularity of indicators among policy-makers to measure progress toward conservation and sustainability goals, there is an urgent need to develop indicators that can be used accurately by both specialists and nonspecialists, drawing from the knowledge possessed by each group. This paper uses a case study from the Kalahari, Botswana to show how participatory and ecological meth...

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