نتایج جستجو برای: agcfsr و gpcc

تعداد نتایج: 760656  

2015
Zhong Liu Menglin Susan Jin

The NASA/JAXA Tropical Rainfall Measuring Mission (TRMM) has been in operation for over 17 years since 1997. The length of TRMM is far shorter than those from ground observations, raising a question as to whether TRMM derived climatology products are good enough for research and applications. In this study, three climatologies derived from a blended product (the TRMM Multi-Satellite Precipitati...

2010
Luay A. Ali

صخلملا Seasonal variation of zooplankton biomass has been carried out at two selected sites on Greater Zab River. Monthly samples of water were collected during period from January to December 2008. Some physico-chemical properties of water were studied including water temperature (from 8 to 30.5 C), hydrogen ion concentration (from 6.3 to 8), EC (from 255 to 821 μs.cm), turbidity (1085 NTU), d...

Journal: :فیزیک زمین و فضا 0
مرتضی میری دانشگاه تهران طیب رضیئی پژوهشکده حفاظت خاک و آبخیزداری مجتبی رحیمی دانشگاه تهران

the lack of reliable and updated precipitation datasets is the most important limitation in the study of many climatological and hydrological subjects, including climate change and temporal variability of precipitation in many data sparse areas around the globe. this is particularly valid for iran where vast areas of central-eastern country that host the iranian deserts, suffer from an inadequa...

2010
Nuha A. S. Alwan Zahir M. Hussain

خلا صلا ـ ة : عون نم يفيكتلا ةانقلا ردقم ءادلأ اًضرع ثحبلا اذه مدقي LMS ةيئاضفلا ةرفشملا تاعومجملا مظن يف نييئاوه مدختست يتلا ةينمزلا لإل اسر ل لابقتسلال اًدحاو اًيئاوهو . و ةانق يه ةمدختسملا ةيكلسلالا ةانقلا Rayleigh ءاضوضلا دوجوب ىسواجلا (Gaussian) يمجتلا جارخلاا يف يع . و حضوت ثحبلا جئاتن إ دحاو لماعم يذ ةانق ردقم مادختساب زاحنم ريغ ريدقت ىلع لوصحلا ةيناكم ) يراسم نم لكل لإا ةراش .( و وحن ةيف...

2011

In this work we study the effect of some electrical prosperities on synthetic rubber reinforced with carbon black diluted in heptanes with concentrations from 0.2% gm/mole to 2.0% gm/ mole in temperatures range (100, 150, 200, 250, 300) C associated with amount weight of black carbon 5wt% added to the diluted rubber. The results of electrical properties measurement of Buna rubber reinforced wit...

2004
B. Moshiri

In this paper, utilization of clustering algorithms for data fusion in decision level is proposed. The results of automatic isolated word recognition, which are derived from speech spectrograph and Linear Predictive Coding (LPC) analysis, are combined with each other by using fuzzy clustering algorithms, especially fuzzy k-means and fuzzy vector quantization. Experimental results show that the ...

2008
Hazem Akel Farouk Al-Quadan Manar Atoum Mohammed Battikhi

Three strains of facultatively anaerobic thermotolerant and moderately halophilic bacteria were isolated from two Jordanian hot spring locations. The novel Bacillus strains were short rods, Gram-positive, motile and spore formers. The strains were capable of anaerobic (but not aerobic) growth at 63C, moderately halophilic, able to grow at NaCl concentration range of 12 15 % and at temperatures ...

Journal: :European Journal of Agronomy 2022

Solar radiation ( S RAD ) plays a pivotal role for crop growth and development, is, therefore, an indispensable input simulation models. Lack of weather data, particularly , is problematic issue in many agricultural zones. To handle this dearth, there have been recent advances the improvement application gridded which provide realistic alternatives to observed data. The main objective present r...

مسعودیان, سید ابوالفضل, کیخسروی کیانی, محمدصادق, رعیت پیشه, فاطمه ,

بارندگی نقش مهمی در چرخه ی آب و انرژی جهانی بازی می کند. خاستگاه علاقه مندی ما نسبت به واکاوی بلند مدت ریزش های آسمانی به دلیل ارزیابی تغییر اقلیم و اثراتی است که این رویداد بر جنبه های گوناگون زندگی ما می گذارد. بر مبنای چنین نیازی سازمان های ملی و فرا ملی آغازگر بسیاری از پژوهش ها و برنامه-های پایشی شده و از آن ها پشتیبانی نمودند. در جهان مراکز بسیاری هستندکه داده های شبکه ای بارش را در مقیاس...

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