نتایج جستجو برای: sediment injection

تعداد نتایج: 194023  

Journal: :مهندسی عمران فردوسی 0
حسین آسیائی حسین منتصری

the mechanism of flow and sediment transport in channel bend is much complex. because of secondary current, the sediment moves away from outer bank toward inner bank and therefore outer bank of the bend is one of best positions for lateral diversion. in this paper, the mechanism of sediment transport was simulated with ssiim software in the u shape channel with lateral intake. in order to verif...

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...

Journal: :دانش آب و خاک 0
محمدحسین جوشن دانش آموخته کارشناسی ارشد سازه های آبی، دانشگاه آزاد اسلامی واحد شوشتر محمد همتی -استادیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه ارومیه مهدی قمشی استاد گروه سازه های آبی، دانشکده مهندسی علوم آب، دانشگاه شهید چمران اهواز

0

2015
Tan T. Nguyen Bjarne Landfald

Spatial variations in composition of marine microbial communities and its causes have largely been disclosed in studies comprising rather large environmental and spatial differences. In the present study, we explored if a moderate but temporally permanent climatic division within a contiguous arctic shelf seafloor was traceable in the diversity patterns of its bacterial and archaeal communities...

Journal: :Chemosphere 2013
De-Gao Wang Helena Steer Tara Tait Zackery Williams Grazina Pacepavicius Teresa Young Timothy Ng Shirley Anne Smyth Laura Kinsman Mehran Alaee

A comprehensive surveillance program was conducted to determine the occurrence of three cyclic volatile methylsiloxanes (cVMS) octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6) in environmental compartments impacted by wastewater effluent discharges. Eleven wastewater treatment plants (WWTPs), representative of those found in Southern O...

2015
Yoo Seok Lee Junyeong An Bongkyu Kim HyunJun Park Jisu Kim In Seop Chang Arum Han

We report a methodology for enhancing the mass transfer at the anode electrode of sediment microbial fuel cells (SMFCs), by employing a fabric baffle to create a separate water-layer for installing the anode electrode in sediment. The maximum power in an SMFC with the anode installed in the separate water-layer (SMFC-wFB) was improved by factor of 6.6 compared to an SMFC having the anode embedd...

2016
Emily Denise Melton Dimitry Y Sorokin Lex Overmars Olga Chertkov Alicia Clum Manoj Pillay Natalia Ivanova Nicole Shapiro Nikos C Kyrpides Tanja Woyke Alla L Lapidus Gerard Muyzer

Desulfurivibrio alkaliphilus strain AHT2(T) is a strictly anaerobic sulfidogenic haloalkaliphile isolated from a composite sediment sample of eight hypersaline alkaline lakes in the Wadi al Natrun valley in the Egyptian Libyan Desert. D. alkaliphilus AHT2(T) is Gram-negative and belongs to the family Desulfobulbaceae within the Deltaproteobacteria. Here we report its genome sequence, which cont...

2015
C. Seabird McKeon Björn G. Tunberg Cora A. Johnston Daniel J. Barshis Alex Ford

Community composition of the infaunal bivalve fauna of the St. Lucie Estuary and southern Indian River Lagoon, eastern Florida was sampled quarterly for 10 years as part of a long-term benthic monitoring program. A total of 38,514 bivalves of 137 taxa were collected and identified. We utilized this data, along with sediment samples and environmental measurements gathered concurrently, to assess...

2016
James T. Morris Donald C. Barber John C. Callaway Randy Chambers Scott C. Hagen Charles S. Hopkinson Beverly J. Johnson Patrick Megonigal Scott C. Neubauer Tiffany Troxler Cathleen Wigand

A mixing model derived from first principles describes the bulk density (BD) of intertidal wetland sediments as a function of loss on ignition (LOI). The model assumes that the bulk volume of sediment equates to the sum of self-packing volumes of organic and mineral components or BD = 1/[LOI/k1 + (1-LOI)/k2], where k1 and k2 are the self-packing densities of the pure organic and inorganic compo...

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