نتایج جستجو برای: caspian provinces
تعداد نتایج: 20635 فیلتر نتایج به سال:
The study of interaction between fish cage culture and sediment population dynamics heterotrophic bacteria in the southern Caspian Sea (Nowshahr region)
Introduction: In Iran, few studies have been carried out on the frequency of drowning cases in the country's southern and northern coasts. The aim of this study is to evaluate the frequency of drowning cases in the provinces with northern and southern coastal margins from 2011 to 2014 and to examine the risk factors related to drowning mortality. Methods: This cross-sectional analytical study ...
Although carp is still widely sold and used in its fresh form, a range of value additions may also be observed. It is essential to know the development and management of a carp farm production costs and their evolution. In Iran, warm-water fish farming is based on common, silver, grass, and bighead carps. The carp is easy to rise in hatcheries in very large numbers at little cost, and is distri...
Aim . The aim of the study is to analyze current state artificial reproduction Caspian sturgeon and identify problems reducing efficiency ways solve them. Discussion critical sturgeon, which accounts for up 90% world's related resources, concern entire community, due threat extinction these relic individuals on planet. This can be prevented by increasing reproduction. However, natural practical...
Cordylophora caspia, a colonial hydrozoan native to the Ponto-Caspian region, has become a common invader of both fresh and brackish water ecosystems of North America and Europe. We describe 11 polymorphic microsatellite loci for this species. Preliminary analyses indicate that population substructure may contribute to departures from Hardy-Weinberg equilibrium. In addition, new loci failed to ...
Prediction of Coastal Wave Height using Hybrid-Wavelet Methods Artificial Intelligence (Case study: Amirabad Port the Caspian Sea)
This paper developed an estimation model for the contribution of exports to a country's regional economy based on the Chenery-Moses model and conducted an empirical analysis using China's multi-regional input-output tables for 1997, 2002, and 2007. The results indicated that China's national exports make significantly different contributions to the provincial economy in various regions, with th...
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