نتایج جستجو برای: arid and humid regions show a significant decrease in annual precipitation

تعداد نتایج: 23956957  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1389

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده زبانهای خارجی 1391

the primary goal of the current project was to examine the effect of three different treatments, namely, models with explicit instruction, models with implicit instruction, and models alone on differences between the three groups of subjects in the use of the elements of argument structures in terms of toulmins (2003) model (i.e., claim, data, counterargument claim, counterargument data, rebutt...

Journal: :Remote Sensing 2023

Despite the fact that gross primary productivity (GPP) and water use efficiency (WUE) have been widely used as indicators to evaluate water-carbon cycle, uncertainties exist in patterns of GPP WUE responses climate variability along different aridity gradients. In this study, index was divide China into four arid-humid zones. The spatiotemporal multiple vegetation types response change under zo...

2015
Osvaldo E. Sala Laureano A. Gherardi Debra P. C. Peters

Climate change will result in increased precipitation variability with more extreme events reflected in more frequent droughts as well as more frequent extremely wet conditions. The increase in precipitation variability will occur at different temporal scales from intra to inter-annual and even longer scales. At the intra-annual scale, extreme precipitation events will be interspersed with prol...

Journal: :پژوهش های علوم و فناوری چوب و جنگل 0
جواد سوسنی عضو هیت علمی دانشکده کشاورزی دانشگاه لرستان عاطفه رادمهر فارغ التحصیل سید محمود حسینی قلعه بهمنی فارغ التحصیل کارشناسی ارشد شمس الدین بالاپور مربی دانشکده کشاورزی ساری اصغر سپهوند کارمند اداره منابع طبیعی

abstract       1   most tree characteristics such as annual growth ring are influenced by climatic changes. dendroclimatology, a branch of dendrochronology science, studies the effects of climate parameters such as temperature and precipitation on the characteristics of annual growth ring. to carry out this research, 30 quercus persica coppice trees were selected in oak forest in khorramabad, l...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده علوم انسانی 1388

abstract the aim of this study was threefold: (1) to investigate the relationship between knowledge of semantic prosody and efl learners general language proficiency; (2) to examine the relationship between qualitative as well as quantitative knowledge of words, and (3) to compare the performance of efl learner on receptive and productive measures of semantic prosody. the study is based on a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1390

abstract: advertisements are the most accessible type of authentic materials, and this is one reason why they are used more and more in english teaching classes. for this cause, studies in the field of advertisements are very widespread nowadays. for pun is one aspect which makes advertisements more interesting, it is used more than before in advertisements. use of puns makes an advertisement m...

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

the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...

2017
Fei Gao Gary Feng Ying Ouyang Huixiao Wang Daniel Fisher Ardeshir Adeli Johnie Jenkins

It is often necessary to find a simpler method in different climatic regions to calculate reference crop evapotranspiration (ETo) since the application of the FAO-56 Penman-Monteith method is often restricted due to the unavailability of a comprehensive weather dataset. Seven ETo methods, namely the standard FAO-56 Penman-Monteith, the FAO-24 Radiation, FAO-24 Blaney Criddle, 1985 Hargreaves, P...

ژورنال: علوم آب و خاک 2006
علیرضا برهانی داریان, , احمد فاتحی مرج, , محمد حسین مهدیان, ,

Orumiyeh Lake basin is one of the important regions in Iran from water resources and environment standpoints. In this basin, substantial part of the annual precipitation occurrs in spring, winter, and fall seasons. Due to semi-arid climate of the basin, rainfall forecasting is an important issue for proper water resources planning and management, particularly in drought years. On the other hand...

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