One of the most important issues in water supply for agriculture or drinking is sediment control.Sedimentation in water conveyance channels reduces transmission efficiency. this study evaluated theefficiency of settling basin of Kamandan intake that is located in the village of Aligoodarz in Lorestanprovince. At first sample from water and sediment in inlet and outlet of settling basin in diffe...

Settling-thickening tanks are used to achieve separation of the liquid and solid fractions of faecal sludge (FS). They were fi rst developed for primary wastewater treatment, and for clarifi cation following secondary wastewater treatment, and it is the same mechanism for solids-liquid separation as that employed in septic tanks. Settling-thickening tanks for FS treatment are rectangular tanks,...

in this research work, the parameters affecting the settling velocity within the thickeners were studied by introducing an equivalent shape factor. several thickener feed samples of different densities including copper, lead and zinc, and coal were prepared. the settling tests were performed on the samples, and the corresponding settling curves were plotted. using the linear regression analysis...

Density interfaces in the water column are ubiquitously found in oceans and lakes. Interaction of settling particles with pycnoclines plays a pivotal function in nutrient transport between ocean layers and settling rates of marine particles. We perform direct numerical simulations of an elongated particle settling through a density interface and scrutinize the role of stratification on the sett...

We analyse high-resolution archival UVES data of turnoff and subgiant stars in the nearby globular cluster NGC6397 ([Fe/H]≈−2). Balmer-profile analyses are performed to derive reddening-free effective temperatures. Due to the limited S/N and uncertainties related to blaze removal, we find the data quality insufficient to exclude the existence of gravitational settling. If the newly derived effe...

We develop and investigate an advection–diffusion-settling model of deep-sea mining collector plumes, building on the analysis midwater plumes in Part 1. In case deposition plays a predominant role controlling mass sediment suspension, thus setting extent plume. first discuss competition between settling, which leads to deposition, vertical turbulent diffusion, stretches plume vertically reduce...

Received Jun 12, 2011 Revised Aug 20, 2011 Accepted Feb 26, 2012 A gain modified CMOS Operational Transconductance Amplifier (OTA) for a 16 bit pipeline Analog-to-Digital Converter (ADC) is presented. The circuit is designed to be used for a high resolution and low sampling rate ADC. Gain boosting technique is implemented in the design to achieve high DC gain and settling time as required. Post...

A high performance and buffer amplifier for liquid crystal display system is presented here. The proposed architecture contains self biased RAIL TO RAIL complementary differential pair , and class B output driving stage which is suitable for large and small size liquid crystal display, compensation capacitor and resistance are used to improve the settling time and slew rate of the buffer amplif...

A 2.4GHz frequency synthesizer is proposed as a part of a low cost RF front end for ISM band applications. The frequency synthesizer employed a new dual loop architecture to improve the settling time, while keeping a fine frequency resolution. With a settling time of 30µs, the frequency synthesizer is able to hop at 2k hop/s with less than 10% overhead. When utilized in a digital wireless syste...

Despite of few research works on municipal sludge, still there is a lack of actual data. Thus, this work was focused on the conditioning and rheology of fresh activated sludge. The effect of cationic polyelectrolyte has been investigated at different concentrations and pH values in a comparative fashion. Yield stress is presented in all results indicating the minimum stress that necessary to re...