نتایج جستجو برای: aqueous solutions

تعداد نتایج: 406247  

2011
A. Bojanowska-Czajka H. Nichipor P. Drzewicz B. Szostek A. Gałęzowska S. Męczyńska M. Kruszewski Z. Zimek G. Nałęcz-Jawecki M. Trojanowicz

The radiolytic degradation of widely used fungicide, carbendazim, in synthetic aqueous solutions and industrial wastewater was investigated employing γ-irradiation. The effect of the absorbed dose, initial concentration and pH of irradiated solution on the effectiveness of carbendazim decomposition were investigated. Decomposition of carbendazim in 100 μM concentration in synthetic aqueous solu...

2003
Yang-Xin Yu Guang-Hua Gao Jean-Luc Daridon Bernard Lagourette

Solid–liquid equilibria in mixed electrolyte aqueous solution have been investigated using available thermodynamic data for solids and for aqueous electrolyte solutions. The mean spherical approximation (MSA) modified by Lu et al. [Fluid Phase Equilib. 85 (1993) 81] is used to calculate the mean ionic activity coefficients in mixed electrolyte solutions at saturation conditions. Solid–liquid eq...

آزادبخت, فاطمه, اسرافیلی, علی, امیری, مهناز, ساجدی فر, جواد, غلامی, میترا, یگانه بادی, مجتبی,

Background and purpose: Antibiotics are extensively used in treatment of diseases. Metronidazole is an antimicrobial agent and is a nitroimidazole derivative, which is widely used in treatment of infectious diseases caused by bacteria and protozoa. This compound is irrefrangible, toxic, carcinogenic, mutagenic, and has high solubility in water. Advanced oxidation process is an effective method ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1370

determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...

2015
JOSEPHINA WERNER Hendrik Bluhm

Werner, J. 2015. Exploring the Surface of Aqueous Solutions. X-ray photoelectron spectroscopy studies using a liquid micro-jet. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1313. 88 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9399-8. The surface behavior of biologically or atmospherically relevant chemical compounds in aque...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2013
Lucio Zennaro Massimiliano Magro Fabio Vianello Adelio Rigo Gino Mariotto Marco Giarola Elena Froner Marina Scarpa

Aqueous solutions of naked nanotubes with Ti concentration up to 10 mM are obtained by hydrothermal synthesis followed by extensive ultrasound treatment. The morphology, surface characteristics, and solution behavior of the solubilized nanotubes are investigated. The time course of the solubilization process driven by ultrasound follows a first-order kinetic law and is mediated by the competiti...

Journal: :Molecules 2012
Ahmad Fairuz Omar Hanafi Atan Mohd Zubir Matjafri

Acid content is one of the important quality attributes in determining the maturity index of agricultural product, particularly fruits. Despite the fact that much research on the measurement of acidity in fruits through non-destructive spectroscopy analysis at NIR wavelengths between 700 to 1,000 nm has been conducted, the same response towards individual acids is not well known. This paper pre...

Journal: :The Journal of chemical physics 2008
David A Turton Johannes Hunger Glenn Hefter Richard Buchner Klaas Wynne

When salts are added to water, generally the viscosity increases, suggesting that the ions increase the strength of the water's hydrogen-bond network. However, infrared pump-probe measurements on electrolyte solutions have found that ions have no influence on the rotational dynamics of water molecules, implying no enhancement or breakdown of the hydrogen-bond network. Here, we report optical Ke...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2007
S Tomić S Dolanski Babić T Vuletić S Krca D Ivanković L Griparić R Podgornik

We report on a detailed characterization of complex dielectric response of Na-DNA aqueous solutions by means of low-frequency dielectric spectroscopy (40 Hz-110 MHz). Results reveal two broad relaxation modes of strength 20<Deltaepsilon(LF)<100 and 5<Deltaepsilon(HF)<20, centered at 0.5 kHz<nu(LF)<70 kHz and 0.1 MHz<nu(HF)<15 MHz. The characteristic length scale of the low-frequency (LF) proces...

2016
Yann Gauduel A. Migus J. P. Chambaret A. Antonetti

2014 Femtosecond optical techniques allowing the generation of intense optical pulses from the near ultraviolet to the near infrared are used in the monitoring of ultrafast photophysical and photochemical reactions in aqueous solutions. Selected examples for dynamics of electron solvation in water and aqueous solution of ferrocyanide are discussed. Revue Phys. Appl. 22 (1987) -1759 DÉCEMBRE 198...

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