Sediment particles originating from erosion processes in the catchment are propagated along with the river flow. When the flow of a river is stored in a reservoir, the sediment settles in the reservoir and reduces its capacity. Reduction in the storage capacity of a reservoir beyond a limit hampers the purpose for which it was designed. Thus assessment of sediment deposition becomes very import...

INTO SEDIMENTARY SEQUENCES ON EARLY MARS. D. C. Fernández-Remolar, O. Prieto-Ballesteros, S. M. Chemtob, R. V. Morris, D. Ming, A. K. Knoll, L. Hutchison, J. F. Mustard, R. Amils and R. Arvidson. Centro de Astrobiológica (INTA-CSIC), Ctra Ajalvir km 4, 28850 Torrejón de Ardoz, Spain, [email protected], Dept. of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130. Johnson ...

In this contribution, we examine how people living around industrial gold mining concessions in eastern Democratic Republic of Congo (DRC) view themselves relation to the extractive industries. We apply Hall’s notion articulation grasp layering subject formation time and space, or what call “sedimentation subjectivities”. The lens allows for a better understanding engage with positions they are...

BACKGROUND Amazonian populations are exposed to diverse parasites and pathogens, including protozoal, bacterial, fungal and helminthic infections. Yet much knowledge of the immune system is based on industrialised populations where these infections are relatively rare. AIM This study examines distributions and age-related differences in 22 measures of immune function for Bolivian forager-hort...

sedimentation is one of the most important problems in harbors that results in considerable economic costs. harbor planforms affects the flow pattern in the harbor basin and consequently, plays an important role in sediment transport and sedimentation. in the present study, a two dimensional depth-averaged hydrodynamic and sediment transport model has been developed to investigate the effect of...

Pain of the ear, nose, sinuses, and throat is commonly encountered in clinical practice. For the most part, the pathologic process responsible for the patient's symptoms is easily identifiable after the physician performs a targeted history and physical examination. Unfortunately, the nature of this anatomic region makes it possible for the most thorough physician to miss pathologic factors tha...

The putative Ca(2+)-channel blocker LaCl3 prevented the gravitropic bending of cut snapdragon (Antirrhinum majus L.) spikes (S. Philosoph-Hadas, S. Meir, I. Rosenberger, A.H. Halevy [1996] Plant Physiol 110: 301-310) and inhibited stem curvature to a greater extent than vertical and horizontal stem elongation at the bending zone. This might indicate that LaCl3, which modulates cytosolic Ca2+, d...

The nickel removing by electrocoagulation of Ni(II)-NH3-CO2-SO2-H2O system was studied in a batch reactor 50 L useful volume, with stirring, and two pairs aluminum electrodes. operating parameters were concentration between 255 342 mg L-1, current density 11.0 16.6 mA cm-2, pH 8.34±0.06, mean temperature 58.4±3.9 oC retention time min. maximum removal 99.7 % at specific energy consumption 16.86...

There is an increasing awareness that rivers need more room in order to safeguard flood safety under climate change conditions. Contemporary river management is creating room in the floodplains and allowing, within certain bounds, natural processes of sedimentation and erosion. One of the aims is to restore dynamic conditions, so as to get a sustainable and more diverse river ecosystem that can...

background: ocsillator system is recognized by many water plant treatment designers for having many advantages, such as combination of mixing processes, flocculation and sedimentation processes in the same unit, the possibility of softening and lucidity simultaneously, and relatively acceptable efficiency. despite using this process in number of the regions in the country, enough researches hav...