نتایج جستجو برای: marine system
تعداد نتایج: 2313691 فیلتر نتایج به سال:
extensive research in the last decade has defined that most chronic diseases display dysregulation of multiple cell signaling pathways that have been linked to inflammation. neuroinflammation is reaction of living nervous tissue to injury. it may be initiated in response to neurological disease. including infection, traumatic brain injury, toxic metabolites and autoimmunity. the natural compoun...
The existence of the Gulf of Mexico dead zone makes it clear that marine ecosystems can be damaged by terrestrial inputs. Marine and terrestrial conservation planning need to be aligned in an explicit fashion to fully represent threats to marine systems. To integrate conservation planning for terrestrial and marine systems, we used a novel threats assessment that included 5 cross-system threats...
چکیده : نظام انتخاباتی قواعد و چار چوب های به رسمیت شناخته شده ای است که بیانگر چگونگی تبدیل آرای مردم به مناصب و پست های سیاسی است. این نظام انتخابات باید به گونه ای عمل کند که نتیجه آن فراهم شدن مکانیسم و ساز و کار مطلوب و مناسب برای برگزاری انتخابات سالم و رقابتی باشد. به نظر می رسد نظام انتخاباتی جمهوری اسلامی ایران دارای ضعف ها و نواقصی است که به سبب آن ها نمی توان انتخابات مطلوب را برگزا...
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...
Marine organisms modify the distribution of radioisotopes in the oceanic ecosystem. Various vital processes of plants and animals concentrate elements. The distributions of the biota are often independent of their watery environment; they may actively migrate vertically or horizontally or may remain in place while the water moves past them. In the case of plankton, the concentrating organisms p...
Setting up a marine reserve involves access monitoring, with the goal of avoiding intrusions of not authorized boats – also considering that, typically, marine reserves are located in areas not easily accessible. Nowadays, intrusion detection in marine reserves is carried out by using radar systems or suitable cameras activated by movement sensors. In this paper, we present a multiagent system ...
This study aims at studying the reliability evaluation for the marine propulsion shaft system under the severe sea conditions. The variations of the contact stress between the bearings and the marine propulsion shaft under the severe sea conditions are analyzed using the finite element simulation. The stress-strength interference theory is used to evaluate the reliability of the marine propulsi...
alcanivorax borkumensis is a marine bacterium that has ability to grow on limited substrates that mainly is alkanes. the ability to use wide range of hydrocarbons is advantage of this bacterium to other marine community bacteria. a. borkumensis have two genetic systems for alkane biodegradation. the first system is alkane hydroxylase (alk-b1and alk-b2) and the second system is cytochrome p450....
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