نتایج جستجو برای: sediment conveyance

تعداد نتایج: 37854  

2017
Remco H.A. Ebben Lilian C.M. Vloet Renate F. Speijers Nico W. Tönjes Jorik Loef Thomas Pelgrim Margreet Hoogeveen Sivera A.A. Berben

BACKGROUND This systematic review aimed to describe non-conveyance in ambulance care from patient-safety and ambulance professional perspectives. The review specifically focussed at describing (1) ambulance non-conveyance rates, (2) characteristics of non-conveyed patients, (3) follow-up care after non-conveyance, (4) existing guidelines or protocols, and (5) influencing factors during the non-...

2013
Darren L. Ficklin Yuzhou Luo Minghua Zhang

Agricultural pollutant runoff is a major source of water contamination in California’s Sacramento River watershed where 8500 km of agricultural land influences water quality. The Soil and Water Assessment Tool (SWAT) hydrology, sediment, nitrate and pesticide transport components were assessed for the Sacramento River watershed. To represent flood conveyance in the area, the model was improved ...

2001
D. L. Higgitt

The paper examines sediment yield and its response to catchment disturbance and environmental variables in the Upper Ž . Yangtze basin, where the attention of environmentalists has been drawn to the Three Gorges Project TGP . Information about the source and conveyance of sediment from the catchment area to the Three Gorges Reservoir has implications for management strategies. Methodologies for...

Sediment Bypass Tunnels (SBTs) are deviant channels that convey the current containing sediments from the upstream of the reservoir to the downstream of the dam. In this research, by applying submerged plates on the entrance of a 90-degree diversion channel for sediment transport, the effect of hydraulic parameters of flow and changes in the angle of plates on sediment transport and deviated fl...

Journal: :تحقیقات مهندسی کشاورزی 0
حسین حمیدی فر دانشجوی دکتری دانشگاه تهران محمدحسین امید استاد گروه مهندسی آبیاری و آبادانی، دانشگاه تهران علیرضا کشاورزی استاد بخش مهندسی آب، دانشکده کشاورزی، دانشگاه شیراز

the study of flow in compound channels with vegetated floodplains is essential to assessing the development of the stage-discharge relationship and sediment and pollutant transport. the present study experimentally investigated mean flow and turbulence characteristics in a prismatic compound channel. the experimental program consisted of vegetated and non-vegetated floodplains with different re...

2017
Mingqi Qiao Peng Sun Haijun Wang Yang Wang Xianghong Zhan Hongqi Liu Xiaoyun Wang Xia Li Xiaoru Wang Jibiao Wu Fushun Wang

We performed an epidemiological investigation of subjects with premenstrual dysphoric disorder (PMDD) to identify the clinical distribution of the major syndromes and symptoms. The pathogenesis of PMDD mainly involves the dysfunction of liver conveyance and dispersion. Excessive liver conveyance and dispersion are associated with liver-qi invasion syndrome, while insufficient liver conveyance a...

2011
M. Leite Ribeiro K. Blanckaert A. J. Schleiss

In the aim of assessing the potential of tributary widening with respect to river rehabilitation in fluvial systems, attention is focused on the effects of tributary widening on the morphodynamic processes of confluence zones. Systematic tests were performed in a confluence flume where the confluent channels are connected with an angle of 90° and the main channel is 0.50 m wide. Three different...

2016
Vahid Noroozi Karbasdehi Sina Dobaradaran Iraj Nabipour Hossein Arfaeinia Roghayeh Mirahmadi Mozhgan Keshtkar

In this data article, by using inductively coupled plasma optical spectrometry (ICP-OES), we aimed to (1) determine the concentration levels of As, Ag, Sr, Sn, Sb, and Mo in the sediments and the shells of Trachycardium lacunosum simultaneously in two separated areas (unpolluted and polluted areas) (2) comparison between the metal contents of sediments in the unpolluted and polluted areas as we...

2016
Purnomo Sejati Hiroshi Suzuki Takahiro Kitajima Akinobu Kuwahara Takashi Yasuno

This paper describes a determination method of a number of a team for multiple mobile robot object conveyance. The number of robot on multiple mobile robot systems is the factor of complexity on robots formation and motion control. In our previous research, we verified the use of the complex-valued neural network for controlling multiple mobile robots in object conveyance problem. Though it is ...

2013
Chase J. Christenson Scott F. Korom

Denitrification, the microbial reduction of nitrate (NO3) in groundwater, has three requirements: limited oxygen, bacteria capable of mediating the reaction, and electron donors for the bacteria to use in the redox reactions. The critical factor for aquifer denitrification is the concentrations of electron donors. Without an adequate supply of electron donors, bacteria cannot reduce concentrati...

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