نتایج جستجو برای: ballast lamp
تعداد نتایج: 11675 فیلتر نتایج به سال:
A prominent vector of aquatic invasive species to coastal regions is the discharge of water, sediments, and biofilm from ships' ballast-water tanks. During eight years of studying ships arriving to the lower Chesapeake Bay, we developed an understanding of the mechanisms by which invasive microorganisms might arrive to the region via ships. Within a given ship, habitats included ballast water, ...
بیماری پژمردگی ورتیسلیومی، که توسط قارچ verticillium dahliae ایجاد می¬شود، یکی از مهم¬ترین بیماری¬های زیتون در دنیا می-باشد. روش¬های مولکولی متعددی جهت استخراج dna از قارچ v. dahliae به منظور استفاده از آن¬ها در روش¬های تشخیص مولکولی ارایه شده است که اغلب مبتنی بر pcr هستند. تکنیک lamp روش جدیدی جهت تشخیص بسیاری از عوامل بیماری¬زا به خصوص ویروس¬های آلوده کننده گیاهی می¬باشد که در آن تمام واکنش¬...
We characterized the physical/chemical conditions and the algal and bacterial assemblages in ballast water from 62 ballast tanks aboard 28 ships operated by the U.S. Military Sealift Command and the Maritime Administration, sampled at 9 ports on the U.S. West Coast and 4 ports on the U.S. East Coast. The ballast tank waters had been held for 2–176 days, and 90% of the tanks had undergone ballas...
Ships transport about 80 percent of world trade and transfer approximately three to five billion tons of ballast water internationally every year. Due to the likely presence of pollutants, the ballast water discharged by ships can have negative effects on aquatic ecosystems. This study was conducted on 10 ships that entered the Bushehr port to determine the effectiveness of the ballast water ex...
The introduction of aquatic species in resting life stages by the release of ballast water is a less well-known but potentially important invasive species vector. Best-management practices designed to minimize transport of ballast water cannot eliminate this threat, because residual water and sediment are retained in ballast tanks after draining. To evaluate the potential efficacy of chemical t...
Studies of marine viromes (viral metagenomes) have revealed that DNA viruses are highly diverse and exhibit biogeographic patterns. However, little is known about the diversity of RNA viruses, which are mostly composed of eukaryotic viruses, and their biogeographic patterns in the oceans. A growth in global commerce and maritime traffic may accelerate spread of diverse and non-cosmopolitan DNA ...
Biological invasions via ship ballast are a major driver of biodiversity change in aquatic systems. In the Laurentian Great Lakes basin, unique shipping operations pose a particular invasion risk. The majority (>90%) of incoming vessels are not fully loaded with ballast water but carry ballast sediments and residual water. Ballast sediments contain viable diapause organisms that could hatch and...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید