نتایج جستجو برای: caspian vimba

تعداد نتایج: 3683  

Journal: :Atmospheric Research 2021

Levar wind is the dominant meteorological and climatic feature in east Iran, blowing from Central Asia to northern coast of Arabian Sea. It also known as “120-days wind” due its mean duration summer season. Although violent responsible for massive dust storms southwest Asia, long-term climatology atmospheric dynamics that facilitate genesis dissipation have not been well documented. This study ...

ابوالقاسم کمالی, سمیرا محمدیان سهراب رضوانی گیل کلائی, شقایق روح الهی فرامرز لالوئی محجوبه نیرانی محمد کاظمیان محمدجواد تقوی

در سواحل جنوبی دریای خزر (رودخانه حویق واقع در استان گیلان و رودخانه گرگانرود واقع در استان گلستان) با استفاده از نشانگرهای ریزماهواره تنوع ژنتیکی و ساختار جمعیت ماهی سیاه‌کولی دریای خزر (Vimba vimba persa) مطالعه شد. هدف از این تحقیق، مطالعه ساختار جمعیت‌های احتمالی مربوط به گونه سیاه‌کولی در دریای خزر و همچنین معرفی نشانگرهای ژنتیکی مربوط است. در این بررسی تعداد 50 نمونه ماهی سیاه‌کولی توسط ص...

Journal: :Remote Sensing 2013
Mehdi Gholamalifard Tiit Kutser Abbas Esmaili-Sari Ali A. Abkar Babak Naimi

Remotely sensed imagery is proving to be a useful tool in estimating water depths in coastal zones. On the other hand, many coastal zone studies in the southern part of the Caspian Sea are only concerned with areas of shallow water and would benefit from easily updated bathymetric estimates. In this study, we tested three different methods for extracting bathymetry information from Landsat 5 da...

2016
Hamid Reza Ghanavi Elena G Gonzalez Ignacio Doadrio

The Middle East contains a great diversity of Capoeta species, but their taxonomy remains poorly described. We used mitochondrial history to examine diversity of the algae-scraping cyprinid Capoeta in Iran, applying the species-delimiting approaches General Mixed Yule-Coalescent (GMYC) and Poisson Tree Process (PTP) as well as haplotype network analyses. Using the BEAST program, we also examine...

2015
Razieh Sadati Amin Barghi Reza Abbasi Larki

BACKGROUND Lipases (acylglycerol acylhydrolase, E. C. 3. 1. 1. 3) are widely distributed among microorganisms, animals and plants, catalyzing the hydrolysis of triglycerides to free fatty acids and glycerol. Their commercial application includes pharmaceutical, chemical, and paper industries. OBJECTIVES This study aimed to isolate and screen lipolytic fungi from coastal waters of the southern...

2012
Ali Davoudi-Kiakalayeh Reza Mohammadi Shahrokh Yousefzadeh-Chabok

BACKGROUND Drowning is a serious but neglected health problem in low-and middle-income countries. OBJECTIVES To describe the effectiveness of drowning prevention program on the reduction of drowning mortality rates in rural settings at the north of Iran, and guide its replication elsewhere. PATIENTS AND METHODS This interventional design included pre- and post-intervention observations in t...

Journal: :international journal of environmental research 2011
y. zeinolabedin m.s. yahyapoor z. shirzad

after the soviet union fragmentation, the attentions of regional and international countries have turned to this region for oil and gas discovery in the caspian basin. after that, this region enjoys more geopolitical importance increasingly. therefore, the main question is:” what factors can influence the new geopolitics of the caspian basin?” it seems that, some issues such as the lack of a...

Journal: :Ambio 2004
Valeriy Barannik Olena Borysova Felix Stolberg

Ecosystems in the Caspian Sea region have been heavily modified by anthropogenic activities, mainly as a result of changes in the water flow and degradation of the water quality in the ecosystems. Changes in the regional environment have influenced regional economies, particularly obvious in the impacts on fish stocks. Using the methodology developed in the GIWA project, experts in the region c...

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