نتایج جستجو برای: physico chemical parameters

تعداد نتایج: 932553  

Journal: :Minerals 2022

Flux formulations are specified to target chemical and physico-chemical parameters. Chemical parameters set flux element transfer behaviours weld metal oxygen contents. Physico-chemical such as slag viscosity, surface tension melting range targeted ensure an acceptable bead profile appearance. Slag detachability is important property required high welding productivity, smooth no entrapment. Her...

2011
C. K. YAP M. W. CHEE S. SHAMARINA F. B. EDWARD W. CHEW S. G. TAN

Coastal water samples were collected from 20 sampling sites in the southern part of Peninsular Malaysia. Seven physicochemical parameters were measured directly in-situ while water samples were collected and analysed for 6 dissolved trace metal concentrations. The surface water (0-20 cm) physico-chemical parameters including temperature, salinity, dissolved oxygen (DO), pH, total dissolved soli...

A. Ranjbar A.R. Sepaskhah, S. Emadi

This research was conducted to study and classify the physico-chemicalproperties of soil, yield components of wheat and to determine the significance ofthese parameters on the grain yield formation. In this research, seven statisticalmethods consisting of simple correlation analysis (SCA), multiple linear regression(MLR), stepwise regression (SR), factor analysis (FA), principal componentanalys...

Journal: :Journal of oleo science 2011
N A M Yanty J M N Marikkar Y B Che Man K Long

Lard being an edible fat could be used in different forms in food systems. In this study, composition and thermal analysis of lard stearin (LS) and lard olein (LO) were undertaken to determine some common parameters which would enable their detection in food. A sample of native lard was partitioned into LS and LO using acetone as solvent and the fractions were compared to the original sample wi...

2008
T. T. Ajith Kumar T. Thangaradjou

The physico-chemical and biological characteristics of the Muthupettai mangrove waters, south of Chennai in India, indicated marked spatial and temporal variation in various parameters. Most of these parameters were found to be largely influenced by the northeast monsoon. The study also found the presence of higher nutrient and dissolved oxygen concentration and were comparable to conditions in...

Journal: :Journal of environmental management 2005
Lars Herngren Ashantha Goonetilleke Godwin A Ayoko

Urban stormwater from simulated rainfall on three different landuses in Queensland State, Australia (residential, industrial, commercial) was analysed for heavy metals and physico-chemical parameters such as Dissolved Organic Carbon (DOC) and Total Suspended Solids (TSS). Rainfall events were simulated using a specially designed rainfall simulator for paved surfaces. Event mean concentration sa...

Journal: :The Analyst 2013
Jie Zhang Jian Yan Si Li Bo Pang Cheng-Gang Guo Cheng-Xi Cao Xin-Qiao Jin

In this paper, a mathematical model was proposed for calculating physico-chemical parameters and simulating the separation process of solutes in free-flow zone electrophoresis (FFZE). Computer software was developed and implemented in a Delphi XE2 environment based on the model, which comprises zone electrophoresis, electrolyte solution, hydrodynamics and diffusion as well as conversion equatio...

Journal: :Water research 2007
Michele A Burford Suzanne A Johnson Andrew J Cook Timothy V Packer Bradley M Taylor E Robert Townsley

This study examined the correlations between watershed and reservoir characteristics, and water quality parameters related to algal blooms in seven subtropical reservoirs. Analysis of the dissimilarity of physico-chemical parameters resulted in separation of the reservoirs into three main groups: four reservoirs with the highest proportion of agriculture and/or urban land use in their watershed...

2000
W. Heine I. Sekoulov H. Burkhardt J. Behrendt

By the consideration of the microscopic picture of activated sludge samples it is possible to introduce a further biological parameter apart from the conventional physico-chemical parameters for the evaluation and control of biological stages of waste water treatment plants. It is reported that different parameters have certain influences on the activated sludge floc and on the developing bioze...

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