نتایج جستجو برای: when it occupies a river valley

تعداد نتایج: 13738187  

2016
Kobina Assan Ampah Beatrice Nickel Prince Asare Amanda Ross Daniel De-Graft Sarah Kerber Ralf Spallek Mahavir Singh Gerd Pluschke Dorothy Yeboah-Manu Katharina Röltgen Pamela L. C. Small

The debilitating skin disease Buruli ulcer (BU) is caused by infection with Mycobacterium ulcerans. While various hypotheses on potential reservoirs and vectors of M. ulcerans exist, the mode of transmission has remained unclear. Epidemiological studies have indicated that children below the age of four are less exposed to the pathogen and at lower risk of developing BU than older children. In ...

2015
J. Ji E. Lee M. Yu J. Ahn J. Yi

Power production in Korea can be classified into nuclear, thermal, and hydropower generation. The nuclear power plant occupies the largest portion of power generation, whilst hydropower only accounts for 2%. Nevertheless, many people are interested in hydropower generation, because its power generation time is shorter than that of nuclear and thermal power. In addition, it is considered as clea...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...

Journal: : 2021

The purpose of this study, which covers the Aras River valley and its immediate surroundings, drained Kagizman Depression in Eastern Anatolia, Erzurum-Kars Section is to deal with development process river that settled region by incising Kars Plateau, geomorphological features, response tectonic movements area factors affecting morphological structure region. selected research both an important...

Journal: :River Research and Applications 2021

We examined how communities of macroinvertebrates occurring in functional process zones (FPZs) are affected by the location FPZs river continuum. delineated for three rivers displaying significant disparities elevation, annual precipitation, valley shape, and other valley-scale hydrogeomorphic variables. extracted corresponding macroinvertebrate community data from US National Water Quality Mon...

2013
Desiree Tullos Hsiao-Wen Wang

The rates and styles of channel adjustments following an abrupt and voluminous sediment pulse are investigated in the context of site and valley characteristics and time-varying sediment transport regimes. Approximately 10.5 x 10m of stored gravel and sand was exposed when Barlin Dam failed during Typhoon WeiPa in 2007. The dam was located on the Dahan River, Taiwan, a system characterized by s...

2006
WILFRED J CARR

While mapping the American Falls region, we found evidence that contributes to the middle Pleistocene to Recent history of the Snake River, and indirectly to the history of overflow of Lake Bonneville. Middle Pleistocene to recent rocks in the valley are mainly lacustrine and fluvial silts and clays, with some sand, gravel, basalt, and a few thin tuff beds. The formation of terraces can be corr...

2013
James M Shultz Andrew McLean Holly B Herberman Mash Alexa Rosen Fiona Kelly Helena M Solo-Gabriele Georgia A Youngs Jr Jessica Jensen Oscar Bernal Yuval Neria

Introduction. In 2011, following heavy winter snowfall, two cities bordering two rivers in North Dakota, USA faced major flood threats. Flooding was foreseeable and predictable although the extent of risk was uncertain. One community, Fargo, situated in a shallow river basin, successfully mitigated and prevented flooding. For the other community, Minot, located in a deep river valley, preventio...

2012
Barbara P. Nash Michael E. Perkins

Sedimentary sequences in the Columbia Plateau region of the Pacific Northwest ranging in age from 16-4 Ma contain fallout tuffs whose origins lie in volcanic centers of the Yellowstone hotspot in northwestern Nevada, eastern Oregon and the Snake River Plain in Idaho. Silicic volcanism began in the region contemporaneously with early eruptions of the Columbia River Basalt Group (CRBG), and the a...

One of the unique properties of northern landforms of zanjanrood catchment is having smooth surfaces that have been interrupted by deep valleys. Rivers that don’t have a wide catchment upper their front mount are running in parallel deep valleys that the topographical situations don’t let them to receive around surface runoffs. This situation has made them to move in parallel form and not to jo...

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