نتایج جستجو برای: because the average annual precipitation is less than 1000 mm

تعداد نتایج: 16413502  

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...

Journal: :محیط شناسی 0
فرامرز خوش اخلاق استادیار جغرافیای طبیعی، دانشکدۀ جغرافیا، دانشگاه تهران محمد امین مرادی مقدم دانشجوی کارشناسی ارشد اقلیم شناسی، دانشکدۀ جغرافیا، دانشگاه تهران محمدامین حیدری دانشجوی دکتری اقلیم شناسی، دانشکدۀ جغرافیا، دانشگاه تهران شیرین صفایی دانشجوی کارشناسی ارشد اقلیم شناسی، دانشکدۀ جغرافیا، دانشگاه تهران

today, climate change is one of the most important scientific and even the political – social issues. the causes of climate change can be divided into natural and human - made. natural factors have the long-term performance and long history, such as the cycle of solar activity, dusts and gases of volcanic eruptions, geodetic and static agents and etc. human-made factors was mainly formed and ac...

پایان نامه :دانشگاه آزاد اسلامی واحد کرمانشاه - دانشکده مهندسی برق و الکترونیک 1393

a novel ultra wideband microstrip bandpass filter using radial stub loaded resonator and interdigital coupled lines is presented in this paper. the radial stub loaded resonator and decagonal patch form a resonator named m to create tuneable multiple notches in the passband for suppression wlan interference. to realize sharp roll-off, two adjustable transmission nulls are located at the lower an...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1388

legal establishment of court is the birth of social life; each person should define him/herself against others offence or violation. when a society forms and the legal character appears, the thought of society refers to a person name prosecuting attorney who is the president of the court for defending his/her rights. prosecuting attorney remindterms such as court, crime and punishment. accordi...

Journal: :مرتع و آبخیزداری 0
مجتبی نساجی زواره دانشجوی دکتری اقلیم شناسی دانشگاه تبریز، عضو هیئت علمی مؤسسه آموزش عالی علمی-کاربردی جهاد کشاورزی، سازمان تحقیقات آموزش و ترویج کشاورزی، تهران، ایران علی محمد خورشید دوست استاد گروه اقلیم شناسی دانشگاه تبریز، ایران علی اکبر رسولی ستاد گروه اقلیم شناسی دانشگاه تبریز، ایران علی سلاجقه استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران

temperature and precipitation are among important atmospheric parameters for watershed planning. assessment of temperature and precipitation trends is very important for future watershed planning. in this paper, trends of atmospheric parameters such as seasonal and annual temperature and precipitation were examined for the synoptic stations of bandar anzali, rasht, ramsar, babolsar and gorgan. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اصفهان - دانشکده زبانهای خارجی 1390

apart from other aspects, desert is a natural environment and is one of the appealing terrestrial elements. putting its symbolic and fictional senses aside, the term “desert” bears mystic sense more than material sense. in addition to the worlds materialistic experiences, desert has attracted the attention of writers because it creates a kind of inner experience, which returns the individual in...

Journal: :iranian journal of public health 0
reza beiranvand asrin karimi ali delpisheh kourosh sayehmiri samira soleimani shahnaz ghalavandi

background: tuberculosis (tb) spread pattern is influenced by geographic and social factors. nowadays geographic information system (gis) is one of the most important epidemiological instrumentation identifying high-risk population groups and geographic areas of tb. the aim of this study was to determine the correlation between climate and geographic distribution of tb in khuzestan province usi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده زبانهای خارجی 1392

abstract since heubners (1985) pioneering study, there have been many studies on (mis) use/ non-use of articles by l2 learners from article-less and article languages. the present study investigated how persian l2 learners of english produce and interpret english definite descriptions and demonstrative descriptions. it was assumed that definite and demonstrative descriptions share the same cen...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - پژوهشکده ادبیات 1393

testing plays a vital role in any language teaching program. it allows teachers and stakeholders, including program administrators, parents, admissions officers and prospective employers to be assured that the learners are progressing according to an accepted standard (douglas, 2010). the problems currently facing language testers have both practical and theoretical implications but the first i...

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