نتایج جستجو برای: color contaminant

تعداد نتایج: 129832  

Journal: :international journal of environmental research 2010
b.m. sadashiva murthy h.s. ramesh m. mahadevaswamy

the sources of groundwater pollution such as, industrial effluents, sewage and extensive farming have lead to agrochemical pollution. mathematical modeling helps to analyze the existing situation, allows forecasting, and to evaluate the effects of changes in the surrounding water quality. the present research has been focused mainly towards understanding the various processes affecting the tran...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده شیمی 1392

in the present work, a simple and sensitive method was developed for determination of morphine and heroin using gold nanoparticles as resonance rayleigh scattering (rrs) and colorimetric technique’s probe. synthesized gold nanoparticles by sodium citrate reduction method have a negative charge layer on their surfaces because of self-assembled citrate anions on their surface. binding of morphin...

Journal: :iranian journal of public health 0
ah mahvi school of public health and center for environmental research, tehran university of medical sciences

ultrasonic technology as an innovative technology may be used for water and wastewater treatment for pollution removal. this technology acts as an advanced oxidation process. application of this technology leads to the decomposition of many com­plex organic compounds to much simpler compounds during physical and chemical compounds during cavitation proc­ess. in this article review, some applica...

Journal: :Research, Society and Development 2021

This study aimed to evaluate in vitro the pharmacological stability of a herbal mouthwash based on Libidibia ferrea extract after aging, establishing its organoleptic and microbiological characteristics. It is 7.5% hydroalcoholic from pods, using reflux decoction technique, spray dried. The stability, pH, sedimentation, density, antimicrobial activity tests were performed with solutions stored ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه اراک - دانشکده مهندسی شیمی 1393

هدف از این تحقیق بررسی کارایی فرایند الکتروفنتون و بهینه سازی پارامترهای موثر بر فرایند به کمک طراحی آماری به منظور تصفیه پساب شرکت پتروشیمی شازند میباشد.در این تحقیق تاثیر پارامترهای : زمان واکنش ، چگالی جریان، ph پساب ، نسبت (?ml h?_2 o_2)/( lit pw) و نسبت مولی (mol h_2 o_2)/(mol fe^(2+) ) بر حذف cod و color از پساب پتروشیمی تحت فرایند الکتروفنتون( با الکترود های آهن و آلومینیوم به طور جداگان...

Journal: :Journal of contaminant hydrology 2002
Song-Bae Kim M Yavuz Corapcioglu

In riverbank filtration, contaminant transport is affected by colloidal particles such as dissolved organic matter (DOM) and bacterial particles. In addition, the subsurface heterogeneity influences the behavior of contaminant transport in riverbank filtration. A mathematical model is developed to describe the contaminant transport in dual-porosity media in the presence of DOM and bacteria as m...

1998
P. E. Geissler R. Greenberg G. Hoppa A. McEwen C. Phillips J. Veverka R. Greeley M. J. S. Belton T. Denk

landscape that has escaped erasure by heating from below is imprinted with generation after generation of intersecting Four distinct classes of lineaments can be described on the ridges at various scales and orientations. Relatively recent fracbasis of Galileo’s improved spectral and spatial coverage of tures expose coarse-grained, clean ice in the shallow subsurface, Europa: (1) incipient crac...

2000
Heather L. Morrison Edward W. Olszewski John E. Norris Paul Harding Kenneth C. Freeman

We critically examine the use of the Washington photometric system (with the 51 filter) for identifying distant halo giants. While this is the most powerful photometric technique for isolating G and K giant stars, spectroscopic follow-up of giant candidates is vital. There are two situations in which interlopers outnumber genuine giants in the diagnostic M−51/M−T2 plot, and are indistinguishabl...

2000
Heather L. Morrison Edward W. Olszewski John E. Norris Paul Harding Kenneth C. Freeman

We critically examine the use of the Washington photometric system (with the 51 filter) for identifying distant halo giants. While this is the most powerful photometric technique for isolating G and K giant stars, spectroscopic follow-up of giant candidates is vital. There are two situations in which interlopers outnumber genuine giants in the diagnostic M−51/M−T2 plot, and are indistinguishabl...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2008
Hideyuki Yamaguchi Mai Shinagawa Nobuhisa Shimba Hiroshi Miyano Eiichiro Suzuki

Recently, it has been reported that certain lots of heparin are associated with an acute, rapid onset of serious side effects indicative of allergic reaction, and (1)H NMR is one of the convenience but strong analytical methods to identify a contaminant in heparin. However, an NMR signal from the contaminant in some cases is overlapped with a satellite peak from heparin, leading a misunderstand...

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