Different species of gazelles are among the most endangered mammals on the Asian steppes and occur in the central, southern and northwestern regions of Iran. The previous conservation efforts in this region have been incomplete due to confusion about the phylogenetic relationship among various populations. So that, different conservation programs such as ex-situ breeding and transfer of captive...

Parrondo’s paradox is a well-known situation where losing strategies can be combined to win, and is based on a thermodynamic Brownian ratchet principle. We demonstrate a new extension of Parrondo’s paradox called the Allison mixture where it is possible to paradoxically generate random sequences with nonzero autocovariance, out of subsequences of zero autocovariance. We explain the effect with ...

The occurrence of severe and inclusive dust storms has caused a lot damage every year in the Persian Gulf region it destructive environmental effects this area. aim study is to investigate monthly changes frequency over Khark, Kish Qeshm islands located during 10-year period (2007–2017) using satellite model observations. results show that highest was observed Island followed by Khark Islands. ...

0

Field studies were conducted in a number of intertidal and offshore islands in the Persian Gulf between 2006 to 2013. SCUBA and skin diving surveys were conducted around Larak, Hormuz, Qeshm, Hengam, Farur, Kish, Lavan, Khark and Farsi islands in the northern region of the Persian Gulf. Marine invertebrates including nudibranchs were photographed up to 32 m. Several species of nudibranchs are r...

Field studies were conducted in a number of intertidal and offshore islands in the Persian Gulf between 2006 to 2013. SCUBA and skin diving surveys were conducted around Larak, Hormuz, Qeshm, Hengam, Farur, Kish, Lavan, Khark and Farsi islands in the northern region of the Persian Gulf. Marine invertebrates including nudibranchs were photographed up to 32 m. Several species of nudibranchs a...

background: much of the environment is affected by petroleum contamination. it imposes serious health problems for humans as well as serious environmental impact. bioremediation is an important consideration for removing environmental pollutants because, compared with other technologies, it incurrs lower costs and is environmentally compatible. methods: crude oil degrading bacteria were isolate...