نتایج جستجو برای: coasts
تعداد نتایج: 3587 فیلتر نتایج به سال:
In this work, in vitro antioxidant activity of two Brazilian red seaweeds, Gracilaria birdiae and Gracilaria cornea, was characterized. The total phenolic content, the radical-scavenging activity and the antioxidant activity were determined in two solvent extracts of the algae. Liquid chromatography-mass spectrometry (LC-MS/MS) allowed identification of important antioxidant compounds. The etha...
persian gulf and its coastal areas are the world's largest source of crude oil and related industries govern the region. one of the contaminants in this area is heavy metals associated with oil spill. more importantly, vanadium, nickel and zinc can be named in this regard. in this study, the contamination of northern coasts of persian gulf is selected to investigate for trace metals of v, ni, c...
There are two species of garfish belonging to the genus Belone (garfish B. belone and short-beaked svetovidovi) in coastal regions Türkiye. It is known that distributed all around Turkish coasts, svetovidovi only Mediterranean Aegean coasts These species’ morphological similarities mainly overlapped characters led confusions for years. The present study represents first detailed molecular analy...
The antioxidant activity, contents of total phenolics and flavonoids were quantified in the methanolic extracts of four Ulva species(U.clathrata,U.linza,U.flexuosa and U.intestinalis) grown at different parts of northern coasts of the Persian Gulf in south of Iran.The seaweeds were collected from Dayyer,Taheri and Northern Ouli coasts in April 2011. Methanolic extracts of the seaweeds were asse...
Tidal energy is a clean, reliable and available energy that exits vastly. Moreover, it can be offered to most of coastal regions and cities. This clean energy can be used in littoral zones worldwide , together with islands and coasts ofIransuch as Chabahar. Furthermore, from ecosystem point of view, this energy is useful for increasing coral reefs and also using organic materials in diffe...
Population structure of sea cucumber Holothuria parva in the coasts of Bushehr and Halileh from Persian Gulf was determined by 16S rRNA of mitochondrial genome sequencing in autumn and winter seasons of 2019. In Bushehr and Halileh populations, 2 and 4 haplotypes were identified out of 374 nucleotide sites, respectively, and haplotype 2 was the most abundant in Bushehr population and was observ...
Due to coastal areaschr('39') dynamic nature, sediment transport frequently changes the shape and morphology of coastal profiles. During the time, coastal areas adjust their sedimentation regimes to such changes. Although constructing structures such as breakwaters and jetties in coastal areas results in disorder in their natural sedimentation regime. To restore the natural regime, Sand Bypassi...
We investigated the composition and spatial distribution of hydrocarbons found in Tunisian’s marine environments. Although moderate, these hydrocarbon concentrations should ideally be reduced. Then, we investigated the characterization of bacterial diversity of polluted seawater. Molecular analysis of bacterial composition associated with hydrocarbon composition analysis provided evidence that ...
Organisms face continual fluctuations in global climatic processes to which they must adapt or perish. Considering that many species are key habitat formers and energy producers, such responses to climate change can have significant population, community and even ecosystem consequences. Paleo-records of ecosystem responses to past environmental variability have proven invaluable for studying im...
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