نتایج جستجو برای: human activities

تعداد نتایج: 1949621  

2017
Jun Zhao Yanzheng Yang Qingxia Zhao Zhong Zhao

Changes in land cover have become key components of global environmental change and represent the impact of human activity. To better understand the fundamental processes of land transition characteristics before and after the implementation of ecological programmes, we determined the dominant systematic changes in land cover in Yongshou, a hilly-gully region on the Loess Plateau. This was achi...

Journal: :Public health nutrition 2003
Geoffrey Cannon

Readers ask what I meant in my previous column by saying: ‘The basis for all organised human activity, whether governing a country, changing a job or undertaking a randomised controlled trial, is not facts. It is ideas that drive us’. As with politics or employment, so it is with public health nutrition. Here’s how the philosopher of science Steve Fuller makes the point: ‘The most salient featu...

2011
J Da Silva CN Shimura A Giordani

Introduction / objectives Work accidents are events that occur in the environment of workers according to their activities. The work is an important human activity which brings a gain both professional and personal, but submittingfails as well . This study aims to analyze the main occupational risks that health professionals are subjected in their work activities, and reflect measures that can ...

2014
Yukai Chen Xiaobo Yang Qi Yang Donghai Li Wenxing Long Wenqi Luo

Understanding which factors affect the distribution pattern of extremely small populations is essential to the protection and propagation of rare and endangered plant species. In this study, we established 108 plots covering the entire Hainan Island, and measured the appearance frequency and species richness of plant species with extremely small populations, as well as the ecological environmen...

Journal: :Environmental Health Perspectives 2003
John Cairns

In this article, I examine the relationships between new concepts of human activity in the environment and several prevention strategies used to plot a course toward sustainable use. Natural capitalism and industrial ecology are relatively new concepts that provide a framework for environmental management. Although the precautionary principle puts into policy a determination to prevent environm...

Journal: :The American psychologist 2007
Paul Rozin

Like any other domain of human activity, psychology has its fads and fashions. One consequence of fads is an overconcentration of resources on specific problems or approaches, which leaves other important problems or approaches (holes) underappreciated and understudied. This article is primarily about different factors (such as negativity bias, polarization of positions, focus on internal cause...

Arash Javanshir Barzan Bahrami Kamangar Hadi Poorbagher, Tahsin Rahmani

The Zerebar Lake is a shallow freshwater lake located in the northwestern Iran. The lake is surrounded by three human activities: agriculture, tourism and dam. The present study aimed to investigate (1) which human activity has the greatest impact on eutrophication of the Zerebar Lake (2) If phytoplankton communities, as the indicator, are correlated with the human activities. Water samples wer...

Arash Javanshir Barzan Barzan Hadi Poorbagher, Tahsin Rahmani

The Zerebar Lake is a shallow freshwater lake located in the northwestern Iran. The lake is surrounded by three human activities: agriculture, tourism and dam. The present study aimed to investigate (1) which human activity has the greatest impact on eutrophication of the Zerebar Lake (2) If phytoplankton communities, as the indicator, are correlated with the human activities. Water samples wer...

Arash Javanshir Barzan Bahrami Kamangar Hadi Poorbagher, Tahsin Rahmani

The Zerebar Lake is a shallow freshwater lake located in the northwestern Iran. The lake is surrounded by three human activities: agriculture, tourism and dam. The present study aimed to investigate (1) which human activity has the greatest impact on eutrophication of the Zerebar Lake (2) If phytoplankton communities, as the indicator, are correlated with the human activities. Water samples wer...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1390

this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...

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