The genetic variation and population structure of narrow-clawed crayfish (Astacus leptodactylus) was examined by means of polymerase chain reaction (PC R) restriction fragment length polymorphism (RF LP) analysis of the cytochrome oxidase subunit I (COI) of mitochondrial DNA. A total of 194 adult specimens were collected from seven sample sites including, two in the south Caspian Sea and one ea...

in this study the genetic diversity of wild caspian trout (salmo trutta caspius) in the sardabroud and astara rivers was evaluated using d- loop region sequencing. for this purpose, 35 specimens of adult caspian brown trout were collected from these rivers in the mazandarn and gilan provinces in fall and winter 2011. approximately 3-5 g of soft and fresh fin tissue was isolated and fixed in eth...

We determined the prevalence and risk factors for 3,4-methylenedioxy-methamphetamine (MDMA, "ecstasy") use among college students in Astara, a northern border city of Iran. In a cross-sectional questionnaire survey of 1226 students, the lifetime prevalence of ecstasy use was 5.6%. The lifetime prevalence of use of other drugs, mostly cannabis and opium, was 4.6%. A fifth of students (21.8%) wer...

Sustainable tourism development, its rules and management practices can be applied to all forms of tourism, including mass different types it in directions. Important achievements have been made this field our country. The principles sustainability development should take into account environmental, economic socio-cultural aspects, an appropriate balance created between these three factors ensu...

during recent years, a series of climate projections provided for surface temperature increase and precipitation changes over the next century in various time slices. national institutes are using downscaling projections for more precise results. in this research study, various climate change projections in global, continental, regional and local scales have been examined in special forest ecos...

To study the intraspecific diversity of Caspian Asp, Leuciscus aspius in South Sea region, Iran, we collected 2016–2017 a total 101 specimens from Aras River and Astara, Anzali, Kiashahr Langeroud shores, analysed 41 morphometric nine meristic characteristics with multivariate statistical methods. Significant differences were found between these populations 27 traits. A Principal Component Anal...

Tujuan penelitian ini adalah untuk menganalisa kinerja karyawan dalam meningkatkan kualitas pelayanan kepada konsumen yang membeli produk sepeda motor merek honda pada PT. Astra Motor Cabang Mataram. informan dan Mataram periode tahun 2022. Metode pengumpulan data Dengan menggunakan dokumentasi, wawancara. Hasil menunjukkan 1) terdiri dari Tingkat kerapian pekerjaan, Ketetapan waktu meneyelesai...