نتایج جستجو برای: salinity less than 36.5 psu). upwelling from seabed upward to 9

تعداد نتایج: 11980394  

Journal: :فیزیک زمین و فضا 0
فرشته کمیجانی دانشجوی دکتری فیزیک دریا، دانشگاه علوم و فنون دریایی وحید چگینی استادیار، مرکز ملی اقیانوس شناسی، محمد رضا بنازاده ماهانی استاد، دانشگاه تربیت مدرس، محمدسعید سنجانی کارشناس ارشد فیزیک دریا، مرکز ملی اقیانوس شناسی،

in this study variations of field data such as temperature, salinity and density in and across the transects of chahbahar bay were analyzed using ctd data acquired between winter 2006 and spring 2007 (winter monsoon).the results showed that thermocline layer intensify in mouth of bay between 2m and 6m with 7.81 ?c decrease before the gonou hurricane occured (mid-may 2007). below thermocline lay...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1388

foreign policy takes root from complicated matters. however, this issue may be more truth about armenia. although the new government of armenia is less than 20 years, people of this territory are the first ones who officially accepted christianity. in very past times, these people were a part of great emperors like iran, rome, and byzantium.armenia is regarded as a nation with a privileged hist...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

پایان نامه :0 1391

uncertainty in the financial market will be driven by underlying brownian motions, while the assets are assumed to be general stochastic processes adapted to the filtration of the brownian motions. the goal of this study is to calculate the accumulated wealth in order to optimize the expected terminal value using a suitable utility function. this thesis introduced the lim-wong’s benchmark fun...

Journal: :فیزیک زمین و فضا 0
مریم شیعه علی دکتری فیزیک دریا، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران عباسعلی علی اکبری بیدختی استاد، گروه فیزیک فضا، مؤسسۀ ژئوفیزیک دانشگاه تهران، تهران، ایران

upwelling areas in the ocean are important places for fishing as nutrients can be transported from deeper area to the near surface region. in this study, the upwelling in the eastern coastal area of the caspian sea for 2004 was studied using coherens, a three-dimensional ocean model. in order to simulate the circulation in the caspian sea, the gridded fields were chosen as 0.046 × 0.046 degrees...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

پایان نامه :0 1374

the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...

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

there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...

2011
Lı́dia Delgado Guillermo Guerao Carles Ribera

Gammarus aequicauda is a euryhaline amphipod that is a common inhabitant of brackish environments of the Mediterranean Sea. In the Ebro delta, the population density of G. aequicauda is highly variable throughout the year. The main objective of this study is to investigate the effect of salinity on the growth of G. aequicauda juveniles. G. aequicauda embryos and juveniles can survive and grow i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1392

a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...

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