نتایج جستجو برای: column experiment

تعداد نتایج: 520563  

H. Mir Seyed Hosseini R. Karimi S. Bagheri Novair S. H. Tabatabaei

ABSTRACT- As the world's population has grown and become more urban and affluent, waste production has raised drastically. Wastewater reuse has been identified as a way to alleviate water scarcity and improve crop productivity and environmental sustainability. To address the issue, a soil column experiment was carried out in a 3 × 3 factorial randomized block design including three treatments o...

Journal: :Environmental science & technology 2015
Lin Zhang Louis Thibodeaux Lee Jones Rainer Lohmann

The dynamics of persistent organic pollutants in the oceans are not well constrained, in particular during a bloom formation and collapse. Polychlorinated biphenyls (PCBs) and some pesticides were measured in air, water, and zooplankton tracking the North Atlantic Bloom in May 2008. Lower weight PCBs were entering the water column from the atmosphere during the main bloom period but reached equ...

Journal: :Trends in neurosciences 1995
G J Goodhill S Löwel

The development of ocular dominance columns in primary visual cortex has attracted much interest from both experimentalists and theoreticians. One key parameter of these columns is their periodicity - it is thus important to understand how this is determined. Novel experimental work demonstrates that the periodicity is influenced by the temporal patterning of afferent activity, as predicted by ...

2001
Grzegorz Malina

Setting up accurate and user-friendly models of physical, chemical and biological processes is particularly useful for design and optimization of vapor extraction/bioventing (SVE/SBV) systems, and prediction of residual concentrations and remediation time. Despite improvment of model structures, the optimum experiments should be designed for model calibration. The feasibility of parameter estim...

2013
D. P. Rana N. J. Mistry M. M. Raghuwanshi

The logical view of data is a two dimensional table and the physical storage is a single dimensional. Two approaches exist to map two dimensional data on to a single dimensional storage: Row oriented and Column oriented. Common database applications are developed using traditional roworiented database systems. Data Mining (DM) is a promising research area, deals with huge data with large number...

2005
Christian Steinberg

Within the scope of the interdisciplinary NASRI research project (Natural and Artificial Systems for Recharge and Infiltration) dealing with river bank filtration processes at Berlin water works, a semi-technical column experiment has been ongoing since January 2003 to simulate river bank filtration. Here a 30 m long group of 6 soil columns is operated by surface water sampled from lake Tegel (...

2014
Chenghao Wang Shangbin Xiao Yingchen Li Huayao Zhong Xuechen Li Feng Peng

Indoor simulation experiment was carried out to evaluate the formation and consumption rates of methane (CH4) in Xiangxi Bay of the Three Gorges Reservoir (TGR), China. The results show that both the CH4 formation and consumption rates were significantly positively correlated with temperature. CH4 efflux decreased with rising temperature due to its potential increasing oxidation rate. CH4 oxida...

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