نتایج جستجو برای: backwash effects

تعداد نتایج: 1544431  

Journal: :Colloids and Surfaces A: Physicochemical and Engineering Aspects 2021

The results of the characterisation anaerobic sludge-derived extracellular polymeric substances (EPS) under different extraction conditions and their effects on fouling in submerged hollow fibre membranes are presented. A wide range EPS was obtained depending conditions. Proteins, polysaccharides, humic represented 80–99% total organic matter extracted, with 54–60% identified as substances. Ult...

Journal: :Journal of social sciences & humanities 2022

This study primarily focused the EFL undergraduate students at a public university in Pakistan. In this study, task-based language assessment (TBLA) was used to assess reading skills because it is one of most assessed Reading an academic skill. Supposedly, should have good higher education. Thus, there are three courses taught specifically focusing on English education and prime focus all them....

2010
Paul Clarke Claire Crawford Fiona Steele Anna Vignoles

We discuss the use of fixed and random effects models in the context of educational research and set out the assumptions behind the two modelling approaches. To illustrate the issues that should be considered when choosing between these approaches, we analyse the determinants of pupil achievement in primary school, using data from the Avon Longitudinal Study of Parents and Children. We conclude...

2009
Minjung Kyung Jeff Gill George Casella

An alternative to the classical mixedmodel with normal random effects is to use a Dirichlet process to model the random effects. Such models have proven useful in practice, and we have observed a noticeable variance reduction, in the estimation of the fixed effects, when the Dirichlet process is used instead of the normal. In this paper we formalize this notion, and give a theoretical justifica...

2007
Mark Gersovitz Ann Harrison Larry Katz Daniel Sichel ANNE C. CASE

In this paper I discuss economic processes that may give rise to spatial patterns in data, and explore the relative merits of alternative modeling approaches when data are spatially correlated. Specifically, I present an estimation scheme that allows for spatial random effects, and focus attention on cases in which such a framework may be preferred to the more general fixed effects framework th...

Journal: :Water Research 2021

Researchers and industrials need decision-making tools to make informed decisions on environmental mitigation strategies proceed with the overall ecodesign of processes. In this study, a tool that couples membrane filtration process modelling life cycle analysis has been developed, for which material energy flows are calculated variable operating conditions basis impact assessment. The resultin...

Journal: :Proceedings of ... Conference on Coastal Engineering 2023

Gravel beaches are prevalent natural features on many coastlines and play a vital role in shore protection, often inspiring protection structures (Bayle et al., 2020) nature-based solutions. Dynamic revetments constructed features, designed to mimic gravel beaches, dissipating wave energy preventing or limiting erosion. Compared sand dissipate incident dampen backwash intensity by percolating t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید