نتایج جستجو برای: marine

تعداد نتایج: 93074  

2015
Nate Seltenrich

Investigators are researching whether consumption of plastic debris by marine organisms translates into toxic exposures for people who eat seafood.

2016
Robert Ovetz

Industrial longline fishing can be understood as a case study of the cultural, economic, environmental and social impacts of unsustainable fishing technology. While much attention has been attributed to the impact of industrial longlines on the marine ecosystem, little is known about the impact of longline fishing on local food security, employment, cultural belief systems and traditions, reven...

Journal: :Ecological applications : a publication of the Ecological Society of America 2012
Malin L Pinsky Stephen R Palumbi Serge Andréfouët Sam J Purkis

Which populations are replenished primarily by immigrants (open) and which by local production (closed) remains an important question for management with implications for response to exploitation, protection, and disturbance. However, we lack methods for predicting population openness. Here, we develop a model for openness and show that considering habitat isolation explains the existence of su...

2015
F. Kucuksezgin

The average concentrations of TBT ngSng were found as 235 in fish, 116 in mussels and 635 in barnacles. All mussels sampled showed values of TBT+DBT, which were below the "tolerable average residue level (TARL)" as currently accepted. Barnacles have high potential as biomonitors for the presence of organotin in the Aegean Sea.

2014
Shi-Xin Wang Xiao-Shuang Zhang Hua-Shi Guan Wei Wang

Recently, the studies on the prevention and treatment of human papillomavirus (HPV) which is closely related to the cervical cancer and other genital diseases are attracting more and more attention all over the world. Marine-derived polysaccharides and other bioactive compounds have been shown to possess a variety of anti-HPV and related cancer activities. This paper will review the recent prog...

Journal: :global journal of environmental science and management 2015
c. zhou x. liu z. wang t. yang l. shi

compared with usa, uk, brazil, indonesia, australia, etc., marine debris research in china has received less attention and few studies have attempted to quantify the abundance and mass of marine debris. in this paper, the abundance, composition and source of beached marine debris, and debris collection system and frequency as well as dustbins’ conditionwere investigated in duodaohai, wanpingkou...

Journal: :international journal of marine science and engineering 2012
s. hamzehei a.a. bidokhti m. s. mortazavi a. h. gheiby

pollutions. recently, both persian gulf and gulf of oman are experiencing several types of pollution including oil spills and heavy metal pollutions as well as harmful algal bloom (hab) caused by biological and environmental changes. theiroccurrence of the red tide or harmful algal bloom during fall and winter 2008-2009 caused numerous unknown factors in the strait of hormuz, persian gulf and g...

Journal: :international journal of molecular and clinical microbiology 0
periasamy dhevagi tamil nadu agricultural university

l glutaminase, a therapeutic enzyme obtained from marine actinomycetes gains importance because of their adaptability to varied environmental factors. an experimental study was carried out to isolate the l glutaminase producing actinomycetes from the marine sediment of thoothukudi. marine sediment sample was collected from six different locations of the thoothukudi coastal ecosystem, enriched w...

Journal: :journal of paramedical sciences 0
javad baharara research center for applied biology, mashhad branch, islamic azad university, mashhad, iran elaheh amini department of animal biology, faculty of biological sciences, kharazmi university, tehran, iran najme nikdel research center for applied biology, mashhad branch, islamic azad university, mashhad, iran mahbubeh afzali research center for applied biology, mashhad branch, islamic azad university, mashhad, iran

cancer is the second important reason of mortality in the world. in this regard melanoma was accounted as the most aggressive type of coetaneous cancer. among drug extracted from natural products from marine organisms have been focused investigations related to chemotherapeutic agents derived from echinoderms such as sea cucumbers and starfish.  in the present study, cytotoxic and apoptosis ind...

Journal: :Current Biology 2015
Thomas J. Webb Beth L. Mindel

Despite increasing concern over the effects of human activities on marine ecosystems, extinction in the sea remains scarce: 19-24 out of a total of >850 recorded extinctions implies a 9-fold lower marine extinction rate compared to non-marine systems. The extent of threats faced by marine systems, and their resilience to them, receive considerable attention, but the detectability of marine exti...

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