نتایج جستجو برای: arid region in sw iran

تعداد نتایج: 17027693  

2015

Extensive livestock grazing even in unsuitable land has increasingly grown in most parts of semi-arid rangeland. Therefore, it is of paramount importance to identify suitable land for livestock grazing for optimum utilization while causing minimum impact to the environment. This paper adapted the schematic model based on the concepts presented by the Food and Agriculture Organization of suitabi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی 1391

the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...

ژورنال: تحقیقات دامپزشکی 2007
حسن لدنی رضا آقا ابراهیمی سامانی, صادق رهبری, صدیقه نبیان, عباس گرامی صادقیان مهدی خلج, وحید عطارد

Two hundred and ninty four engorged female ticks were collected from 4 different geographical regions for assessment of tick resistance against acaricide compounds.The 15-21 day- old larvae have been tested in accordance with FAO recommended larvae packet test . Resistant factor for each region was calculated by LC50 and LC99. Minimum LC50 (0.008)and, Maximum LC50 (0.024) for Amitraz wer...

Journal: :Water 2023

Assessing the status of water resources is essential for long-term planning related to and many other needs a country. According climate reports, change on rise in all parts world; however, this phenomenon will have more consequences arid semi-arid regions. The aim study evaluate effects groundwater, surface water, their exchanges Shazand plain Iran, which has experienced significant decline st...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

growing demands and requires of high data rate systems cause significant increase of high frequency systems for wideband communication applications. as mixers are one of the main blocks of each receivers and its performance has great impact on receiver’s performance; in this thesis, a new solution for ku-band (12-18 ghz) mixer design in tsmc 0.18 µm is presented. this mixer has high linearity a...

2012
Y. Parvizi M. Gorji M. H. Mahdian M. Omid

Soil organic carbon (SOC) plays a key role in soil fertility, hydrology, contaminants control and acts as a sink or source of terrestrial carbon content that can affect the concentration of atmospheric CO2. SOC supports the sustainability and quality of ecosystems, especially in semi-arid region. This study was conducted to determine relative importance of 13 different exploratory climatic, soi...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Ryo Futahashi Ryouka Kawahara-Miki Michiyo Kinoshita Kazutoshi Yoshitake Shunsuke Yajima Kentaro Arikawa Takema Fukatsu

Dragonflies are colorful and large-eyed animals strongly dependent on color vision. Here we report an extraordinary large number of opsin genes in dragonflies and their characteristic spatiotemporal expression patterns. Exhaustive transcriptomic and genomic surveys of three dragonflies of the family Libellulidae consistently identified 20 opsin genes, consisting of 4 nonvisual opsin genes and 1...

2012
Peter J. Hotez Lorenzo Savioli Alan Fenwick

The neglected tropical diseases (NTDs) are highly endemic but patchily distributed among the 20 countries and almost 400 million people of the Middle East and North Africa (MENA) region, and disproportionately affect an estimated 65 million people living on less than US$2 per day. Egypt has the largest number of people living in poverty of any MENA nation, while Yemen has the highest prevalence...

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