نتایج جستجو برای: identified at species level isolatation frequency
تعداد نتایج: 5190030 فیلتر نتایج به سال:
in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...
objective: ecosystems with mixed species compared to the ones with pure compositions provide a broader range of options in the fields of biodiversity, conservation, protection and restoration. nearly all forest plantations are established as monocultures, but research has shown that there are potential advantages to be gained by using carefully designed species mixtures in place of monocultures...
Background: Enterococci faecalis are predominating species of Enterococci causing nosocomial infections. Acquisition of resistance to antibacterial agents, and ability to transfer the resistant genes made them clinically important. This study was performed to determine the frequency of isolation of different species of Enterococci, and the antibacterial resistance pattern of the isolated specie...
to study the population structure of decapods in the intertidal zone of bushehr rocky shores, some random sample collection from four rocky and rubble shores of bushehr were done using a 50×50 quadrates sampling unit, in four successive seasons from autumn 2009 to summer 2010. totally 8 speciesbelonging to 5 family of decapods were identified and counted. in the whole course of sample collectio...
Marine benthic macrophytes (seaweed and seagrasses) are key structural and functional components of some of the most productive ecosystems of the world. They absorb nutrients through their surface directly from the marine environment and thus they are very important biological elements for the estimation of ecological status, representing reliable indicators of coastal waters. The aim of this s...
background: genus acanthocolpus (trematoda: acanthocolpiidae) is one of the most important zoonotic digenean with wide geographic distribution in the world. the purpose of the present study was to describe morpholog-ical and morphometrical characteristics of acanthocolpus species, currently prevalent in marine fish fauna of puri coast, orissa, india. methods: gastro-intestinal organs of leiogna...
Abstract: Marine macro-algae are very important biological indicators of the ecological status of the marine environment because they are first to react to the pollution entering the sea including nutrients which determine the trophy of the ambient of the environment. The aim of this paper is to evaluate the present trophic level and the health status of the sampling stations according to the E...
The objective of this paper was determining population and species diversity of water birds and waders in Gandoman wetland during one year from mid-September 2017 to mid-September 2018 using SDR-IV software. Result showed from 70 identified birds, 28 species were waterfowl and 42 species were waders. The largest population was belong to Fulica atra. Anatidae with 33.19 percent frequency was the...
microorganisms constitute more than half of the earth's biomass and in addition to quantity,they represent great diversity. in january 2013, the number of officially registered names forprokaryotic microorganisms at the genus and species levels were, respectively, approximately2100 and 12000. current authorized methods for classification and identification of newmicrobial taxa are polyphasic ap...
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