نتایج جستجو برای: ecological

تعداد نتایج: 100566  

Biodiversity plays a crucial role in stability and productivity of natural ecosystem. The main goal of this research was to classify ecological groups in steppe rangeland and investigate their relationships with plant diversity indices. Therefore, fifty different Land Unit Tracts (LUT) were identified in Khod-Neuk basin, Yazd province, Iran, in 2010. Vegetation and soil samples were taken in th...

Journal: :تحقیقات نظام سلامت 0
هدایت عباس تبار دانشجوی دکتری، گروه اپیدمیولوژی، دانشکده بهداشت و تغذیه، دانشگاه علوم پزشکی شیراز، شیراز، ایران مسعود سلیمانی دودران استادیار، گروه اپیدمیولوژی، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران پروین حمیدی فرد کارشناس، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران. فرزاد جلیلیان کارشناس ارشد، گروه آموزش بهداشت، مدرس دانشگاه آزاد اسلامی، واحد همدان، همدان، ایران. مهدی میرزایی علویجه دانشجوی کارشناسی ارشد آموزش بهداشت، گروه آموزش بهداشت، دانشکده بهداشت، دانشگاه علوم پزشکی شهید صدوقی یزد، یزد، ایران. مصطفی نصیرزاده دانشجوی کارشناسی ارشد، کمیته تحقیقات دانشجویی، گروه آموزش بهداشت، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران

background: breast cancer is the most common cause of cancer-related deaths among women worldwide. each year it is newly diagnosed in more than 1.1 million women around the world. the aims of this study were to investigate the role of dietary factors such as consumption of vegetables, fruits, dairy products, fried food, fish, and salt along with food, and factors such as weight, physical activi...

Journal: :journal of agricultural science and technology 2014
n. izadi d. hayati

understanding people’s ecological behaviors and the impacts of human activities on natural environment is one of the most important concepts in ecological psychology research. the purpose of this study was to investigate causal relationship between factors and maize growers’ ecological behavior concerning the application of external inputs such as water, fertilizers, chemical pesticides, and ma...

سلگی, عیسی, یاراحمدی, فائزه,

  Background and Aim : Contamination of the surface soils of the urban ecosystem with heavy metals poses potential ecological risks. In this research, a preliminary investigation was carried out to evaluate the potential ecological risk of cadmium and lead contamination in urban park soils in Assadabed City, Iran.   Materials and Methods : Soil samples were taken from the urban parks of Asad...

ژورنال: سلامت و محیط زیست 2022

Background and Objective: Soils and sediments contamination with trace and toxic elements lead to potential ecological risk and adverse effects on human health and so have been the cause of increasing concern worldwide. Therefore, this study was carried out to potential ecological risk assessment of As, Cd, Ni and V in surface sediments of Khazar Abad, southern parts of Caspian Sea in 2019. M...

Introduction: Heavy metals (HMs) accumulated in the road dust may be transferred to the surrounding land and water bodies and pose ecological risks. Hence, such pollution should be considered, especially in coastal roads. This study focuses on the HMs pollution of dust settled on the surface of coastal roads along the Persian Gulf in Bandar Abbas city. Materials and Methods: In this study, ro...

Journal: :journal of herbal drugs (an international journal on medicinal herbs) 2013
vahid karimian mohammad reza vahabi mohammad fazilati fetemeh soleimani

background & aim: in the present research, we investigated phytochemical characteristics of two important species of verbascum genus. enormous reconnaissance and field surveys were conducted to identify the most important natural habitats of verbascum species in kohgiluyeh va buyerahmad province, southern iran. experimental: the aerial parts of verbascum songaricum and v.  cheirantifolium w...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :journal of rangeland science 0
mohsen sharafatmandrad natural resources department, rangeland and watershed management section, university of jiroft, jiroft, iran hossein naderi faculty of rangeland and watershed management, gorgan university of agricultural sciences and natural resources

biodiversity plays a crucial role in stability and productivity of natural ecosystem. the main goal of this research was to classify ecological groups in steppe rangeland and investigate their relationships with plant diversity indices. therefore, fifty different land unit tracts (lut) were identified in khod-neuk basin, yazd province, iran, in 2010. vegetation and soil samples were taken in th...

Journal: :محیط شناسی 0
حسن دارابی استادیار گروه مهندسی طراحی محیط، دانشکدة محیط زیست، دانشگاه تهران ایمان سعیدی مربی گروه مهندسی فضای سبز، دانشگاه ملایر

introduction urban landscape is experiencing rapid changes which put all urban domains under pressures. these processes revolutionize urban landscape into spaces without ecologic values. the sustainability of green patches and corridors has been scathed by lack of ecological approaches in planning and design. therefore, urban green spaces structures and functions have been damaged. green spaces...

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