نتایج جستجو برای: flooding
تعداد نتایج: 13699 فیلتر نتایج به سال:
Foam injection is widely applied in amounts of fields to drilling, production, and formation protection. Sometimes, the application result is disappointing, which is caused by the failure of bubble generation in foam flooding. Therefore, it is necessary to seek ways for improving the performance of foam injection. An increased disturbance to the stratum, like the vibration caused by a seismic o...
BACKGROUND In winter 2013/14 there was widespread flooding in England. Previous studies have described an increased prevalence of psychological morbidity six months after flooding. Disruption to essential services may increase morbidity however there have been no studies examining whether those experiencing disruption but not directly flooded are affected. The National Study of Flooding and Hea...
Many ad hoc network protocols (e.g., routing, service discovery, etc.) use flooding as the basic mechanism to propagate control messages. In flooding, a node transmits a message to all of its neighbors. The neighbors in turn transmit to their neighbors and so on until the message has been propagated to the entire network. Typically, only a subset of the neighbors is required to forward the mess...
The objectives of this study were to test the effects of soil temperature, flooding, and raw organic matter input on N2O emissions in a soil sampled at Hongze Lake wetland, Jiangsu Province, China. The treatments studied were-peat soil (I), peat soil under flooding (II), peat soil plus raw organic matter (III), and peat soil under flooding plus organic matter. These four treatments were incubat...
Rice (Oryza sativa L.) can successfully germinate and grow even when flooded. Rice varieties possessing the submergence 1A (Sub1A) gene display a distinct flooding-tolerant phenotype, associated with lower carbohydrate consumption and restriction of the fast-elongation phenotype typical of flooding-intolerant rice varieties. Calcineurin B-like interacting protein kinase 15 (CIPK15) was recently...
The unpredictable location of nodes in Ad-hoc and Sensor networks has caused new challenges to the known routing Algorithms. Flooding is the most frequently used method to ease these new difficulties. Flooding also plays an important role in unicast and multicast protocols in ad hoc networks. Unfortunately Flooding suffers from immense unnecessary overhead and thus wastes a great deal of energy...
Mobile ad hoc networks will often be deployed in environments where the nodes of the networks are unattended and have little or no physical protection against tampering. The nodes of mobile ad hoc networks are thus susceptible to compromise. The networks are particularly vulnerable to denial of service (DOS) attacks launched through compromised nodes or intruders. In this paper, we present a ne...
Myricaria laxiflora is distributed along the riverbanks of the Yangtze River valley. The Three Gorges Dam has dramatically changed the habitat of M. laxiflora, which has evolved to develop increased resistance to flooding stress. In order to elucidate the relationship between plant endophytic fungi and flooding stress, we isolated and taxonomically characterized the endophytic fungi of M. laxif...
Coastal wetlands of the southeastern United States are threatened by increases in flooding and salinity as a result of both natural processes and man-induced hydrologic alterations. Furthermore, global climate change scenarios suggest that, as a consequence of rising sea levels, much larger areas of coastal wetlands may be affected by flooding and salinity in the next 50 to 100 years. In this p...
This paper studies distributed topology control algorithms to support the efficient Open Shortest Path First (OSPF) link state routing in multi-hop wireless networks. It is highly desirable to retain the basic OSPF model of reliable flooding, especially when large quantities of external, rarelychanging routing data must be carried across the radio network. However, it is not easy to implement r...
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