Results 1 to 10 of about 48,187 (212)

Length-weight relationship, condition factor and relative condition factor of Alosa braschnikowi and A. caspia in the southeast of the Caspian Sea (Goharbaran) [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2021
The main objectives of the present study were to determine the species composition of Caspian shad, genus Alosa and to estimate the LWR, CF, and Kn of A. braschnikowi and A. caspia during different months in the southeastern coast of the Caspian Sea. Two
Hasan Fazli   +5 more
doaj   +1 more source

Investigating the Impact of Air Injection on the Thermal Performance of Helical Tube with Varying Helix Diameters: Downward Flow [PDF]

open access: yesIranian Journal of Chemical Engineering, 2022
In this experimental investigation, the heat transfer and pressure drop of helical tubes with various helical diameters have been studied considering air injections. The tube was rested in vertical form and was put under the constant heat flux.
M. Moaf, O. Alizadeh, A. R. pendashteh
doaj   +1 more source

Effects of rainbow trout farming on water quality around the sea farms in the south of the Caspian Sea [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2022
The purpose of this study was to investigate the physical and chemical factors of seawater to determine the water quality index around two marine farms of rainbow trout in the south of the Caspian Sea.
Sayyed Mohammad Vahid Farabi   +4 more
doaj   +1 more source

Caspian Sea and its Ecological Challenges

open access: yesCaspian Journal of Environmental Sciences, 2010
Caspian Sea is the largest enclosed body of water on the earth. Since the collapse of Soviet Union in 1991 and discovering large oil and gas fields, some issues such as political, economic and environmental events, made the Caspian Sea important.
Nasrollahzadeh, A.
doaj   +3 more sources

Bacterial Contamination of Sanandaj Azad Dam Lake in Kurdestan Province in 2015-16 [PDF]

open access: yesPizhūhish dar Bihdāsht-i Muḥīṭ., 2018
Background and objective: Biological assessment of water resources is of particular importance and the presence of pathogens in these resources affects the health of consumers.
zahra yaghoubzadeh, Resa safari
doaj   +1 more source

Stocks status of kilka in Iranian waters of the Caspian Sea [PDF]

open access: yesEnvironmental Resources Research, 2014
The present study considered the situation of kilka stocks in last decades by using overfished biomass threshold, fishing effort ratio and fishing mortality proxy during 1991-2010.
Hasan Fazli
doaj   +1 more source

Review of the Book “Monsters and Monarchs: Serial Killers in Classical Myths and History”

open access: yesCorpus Mundi, 2023
Serial killers have been a popular topic in literature for centuries, appearing in works of fiction, non-fiction, and even poetry. In literature, serial killers often represent the dark side of human nature, and their stories often explore the depths of ...
Irena V. Lebedeva
doaj   +1 more source

Review of the Monograph “Women and Family Life in Early Modern German Literature” by Elisabeth W. Nivre

open access: yesCorpus Mundi, 2022
This paper reviews a monograph by the Swedish Germanist Elisabeth Waghall Nivre, “Women and Family Life in Early Modern German Literature”. The monograph is published by Camdan House, edited by James Hardin, 2004. ISBN: 1-57113-197-3.
Irena V. Lebedeva
doaj   +1 more source

Determining the water quality of the Tajan River (Sari City) to select the release station for economic fish juveniles of the Caspian Sea (2022) [PDF]

open access: yesعلوم زمین خوارزمی, 2023
Globally, rivers are under tremendous anthropogenic stress caused by stream fragmentation, land use changes, and regulation and water quality has been widely declined.
Hassan Nasrollahzadeh Saravi   +8 more
doaj  

Study on pollution indices based on biological characteristics of macrobenthos in the southern Caspian Sea (2018-2019) [PDF]

open access: yesبوم‌شناسی آبزیان, 2023
The aims of the present study were to investigate the macrobenthos communities in the Caspian Sea and to investigate the pollution of this ecosystem based on the pollution indices ABC (Abundance Biomass Comparison), BC (Biotic Coefficient) and ABC curve ...
Hasan Nasrollahzadeh Saravi   +4 more
doaj  

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