نتایج جستجو برای: marine environmen

تعداد نتایج: 93154  

Journal: :Biointerphases 2013
Felicia Wong Yen Myan James Walker Odette Paramor

Many studies have examined the effects of surface topography on the settlement behaviour of marine organisms and this article reviews these investigations with more emphasis on the effects of topography scale. It has been observed that macro topographies (1-100 mm) are generally favoured by marine fouling taxa and are unsuitable for antifouling applications. This is because macro topographies a...

Journal: :Biology letters 2013
Stephanie J Kamel Richard K Grosberg

Until recently, little attention has been paid to the existence of kin structure in the sea, despite the fact that many marine organisms are sessile or sedentary. This lack of attention to kin structure, and its impacts on social evolution, historically stems from the pervasive assumption that the dispersal of gametes and larvae is almost always sufficient to prevent any persistent associations...

Journal: :Biofouling 2003
L Scott Godwin

The natural barriers to species invasions that exist in isolated marine environments such as Hawaii are overcome by anthropogenic influences on the dispersal patterns of marine organisms. This creates a situation where the marine habitats of the Hawaiian Archipelago are more readily exposed to marine non-indigenous species. A case study of a particular anthropogenic dispersal mode, maritime ves...

Journal: :asia pacific journal of medical toxicology 0
iraj nabipour the persian gulf tropical medicine research center, bushehr university of medical sciences, bushehr, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی بوشهر (bushehr university of medical sciences) ali reza khoshdel epidemiology research centre, aja university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ارتش (artesh university of medical sciences) ali reza golaghaei epidemiology research centre, aja university of medical sciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی ارتش (artesh university of medical sciences) ahmad tashakori beheshti addiction research centre, mashhad university of medical sciences, mashhad, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences) reza afshari addiction research centre, mashhad university of medical sciences, mashhad, iran british columbia centre for disease control, vancouver, canadaسازمان اصلی تایید شده: دانشگاه علوم پزشکی مشهد (mashhad university of medical sciences)

background: the persian gulf is a suitable habitat for various types of marine species. this study was conducted with the aim of determining the epidemiology and clinical findings of injuries inflicted by marine creatures in the persian gulf, south iran. methods: in this retrospective cross-sectional study, medical records of patients with diagnosis of marine animal exposures treated at 6 refer...

Journal: :international journal of environmental research 0

persistent organic pollutants (pops) have widely aroused public concern due to their ubiquity,environmental persistence, long-range transportability, bioaccumulation capacities and potentially adverse effectson living organisms. dakar is located in the industrial zone of senegal (80% of industrial activities) and inhabits25% of senegalese population leading to an ideal sink of these persistent ...

Journal: :iranian journal of microbiology 0
khouloudmohamed barakat microbiology lababoratoy, marine environment division, national institute of oceanography & fisheries yousrimahmoud gohar botany and microbiology depart, faculty of science, alexandria university.

background and objectives: mortality is highly variable within population of cultured fish due to virulent bacteria causing fish septicemia. the use of nano-silver marine fungal chitosan as antibiotic synergisers could be an alternative in the treatment of sepsis fish pathogens. materials and methods: different bulk chitosan solutions were prepared from the mycelia of four marine fungi ( asperg...

ژورنال: طب جنوب 2021
Marhamati , Zohre, Marhamatizadeh , Mohammad Hossein, Mohebbi , Gholam Hossein,

Background: Marine life has long been used for their bioactive compounds. Several amazing compounds with different biological activities have so far been identified in tunicates. The aim of the current study was to evaluate the antimicrobial activity of tunichrome released from phallusia nigra marine tunicates collected from Bushehr province coasts, against four strains of Staphylococcus aure...

قاسمی, حسن, یاری, احسان,

The main objective of this paper is to provide an applied algorithm for analyzing propeller-shaft vibrations in marine vessels. Firstly an underwater marine vehicle has been analyzed at different speed in unsteady condition using the finite volume method. Based on the results of this analysis, flow field of marine vehicle (wake of stern) and velocity inlet to the marine propeller  is extra...

Journal: :the iranian journal of pharmaceutical research 0
mahbobeh afzali mashhad branch,islamic azad university javad baharara 1. animal developmental biology, research center for animal development applied biology& dept. biology, mashhad branch, islamic azad university, mashhad, iran khadijeh shahrokhabadi mashhad branch,islamic azad university elah amini kharazmi university

leukemia is a blood disease which is caused by the inhibition of differentiation and an increased proliferation rate. nature has been known as a rich source of medically useful substances. high diversity of bioactive molecules extracted from marine invertebrates, makes them ideal candidates for cancer researches. the study has been done to investigate cytotoxic effects of dichloromethane brittl...

Journal: :international journal of maritime technology 0
mohd atif siddiqui department of ocean engineering & naval architecture, indian institute of technology, kharagpur vishwanath nagarajan department of ocean engineering & naval architecture, indian institute of technology, kharagpur

the increasing world demand for fish cannot be met by capture fisheries. aquaculture production is increasing and nowadays cage culture has an important role in meeting the world’s fish demand. the design of the physical structure of a cage is determined by the oceanographic conditions of the culture site. each design is site-specific and knowledge of the topography, wind force and direction, p...

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