نتایج جستجو برای: kopeh dagh

تعداد نتایج: 154  

ناصر اصغرزاده, , رقیه حاجی‌بلند, , زهرا مهرفر, ,

A great number of studies have been conducted on the role of Azotobacter - a free living N2-fixer - in agricultural soils, but our information is lacking on the importance of Azotobacter in pasture soils. This research was conducted to study the relationship between ecological and edaphical factors with the population of the bacteria in soil. Soil samples were taken from two sites in Azarbaidja...

Journal: :int. journal of mining & geo-engineering 2015
golnaz jozanikohan fereydoun sahabi gholam hossain norouzi hossein memarian

clay minerals are considered the most important components of clastic reservoir rock evaluation studies. the shurijeh gas reservoir formation, represented by shaly sandstones of the late jurassic-early cretaceous age, is the main reservoir rock in the eastern kopet-dagh sedimentary basin, ne iran. in this study, x-ray diffraction (xrd), x-ray fluorescence (xrf), scanning electron microscopic (s...

Journal: :زمین شناسی اقتصادی 0
سجاد مغفوری ابراهیم راستاد فردین موسیوند

introduction the mn mineralization occurs in the northeastern segment of the sabzevar zone (sz), north of the central iranian microcontinent (cim). this zone (sz) is located between the cim fragmentation in the south and the kopeh dagh sedimentary sequence in the north. the ore deposits of the northeastern segment of the sabzevar zone can be divided into three groups, each with different metal ...

Clay minerals are considered the most important components of clastic reservoir rock evaluation studies. The Shurijeh gas reservoir Formation, represented by shaly sandstones of the Late Jurassic-Early Cretaceous age, is the main reservoir rock in the Eastern Kopet-Dagh sedimentary Basin, NE Iran. In this study, X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopic (S...

ژورنال: علوم آب و خاک 2004
ناصر اصغرزاده, , رقیه حاجی‌بلند, , زهرا مهرفر, ,

A great number of studies have been conducted on the role of Azotobacter - a free living N2-fixer - in agricultural soils, but our information is lacking on the importance of Azotobacter in pasture soils. This research was conducted to study the relationship between ecological and edaphical factors with the population of the bacteria in soil. Soil samples were taken from two sites in Azarbaidja...

Journal: :نشریه دانشکده فنی 0
کاظم سید امامی

between the lower and upper cretaceous there were some diastrophic movements, belonging to the austrain phase. these movements, which can be traced in many parts of north and central iran, caused extensive precenomanian erosion. even in southwest iran a wide spread discontinuity is reported at the base of the kazhdumi formation, which is possibly related to these movements. in the kopet - dagh ...

Journal: :فیزیک زمین و فضا 0
احمد سدیدخوی استادیار،گروه فیزیک زمین، مؤسسه ژئوفیزیک دانشگاه تهران، ایران زهرا علیخانی دانش آموخته کارشناسی ارشد ژئوفیزیک (زلزله شناسی)، دانشگاه آزاد اسلامی، واحد علوم تحقیقات، تهران، ایران فروغ صدودی پژوهشگر، مؤسسه تحقیقاتی علوم زمین پتسدام، آلمان

iran is located in a roughly triangular deforming region, consisting of relatively undeformed shield areas to the southwest (arabia) and northeast and the more recently deformed, though currently inactive, southwest afghanistan block in the east. the current geological and tectonic setting of iran is due to the ongoing convergence between the arabian and eurasian plates, which resulted in the f...

Journal: :فیزیک زمین و فضا 0
اصغر آزادی پژوهشگاه بین المللی زلزله شناسی- دانشجوی دکتری غلام جوان دولویی پژوهشگاه بین المللی زلزله شناسی- استادیار ناصر حافظی مقدس دانشگاه صنعتی شاهرود- دانشیار خالد حسامی آذر پژوهشگاه بین المللی زلزله شناسی- استادیار

the nw-se trending tus fault is one of the active faults in the north-east of iran . geomorphologic evidences indicate that this fault is active and goes through mashhad city from near tus town. since the population and number of pilgrims in this city are high, the study of the tus fault is of great importance. hence, we have carried out a new investigation to evaluate the hazardous potential o...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2001
A Chakrabartty

T amyloidoses are diseases of protein conformation, in which a particular soluble innocuous protein transforms and aggregates into an insoluble fibrillar structure that deposits in extracellular spaces of specific organs (reviewed in refs. 1–4). Organ dysfunction accompanies fibrillar deposition, and the amyloid hypothesis proposes a cause and effect relationship between deposition and dysfunct...

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