نتایج جستجو برای: cadmium zinc sulfide

تعداد نتایج: 109200  

2013
Carlos M. Bledt Jeffrey E. Melzer James A. Harrington

Metal coated Hollow Glass Waveguides (HGWs) incorporating single dielectric thin films have been widely used for the low-loss transmission of infrared radiation in applications ranging from surgery to spectroscopy. While the incorporation of single dielectric film designs have traditionally been used in metal/dielectric coated HGWs, recent research has focused on the development of alternating ...

The aim of this study was to investigate the effect of tartrate ion (C4H4O62-) on the extraction and separation of zinc and cadmium using D2EHPA extractant. The presence of tartrate ion in the solution caused the shift of  the  extraction curve of zinc and cadmium to the more alkaline pH; however, the shifting rate for the cadmium extraction curve was more significant. In the absence of tartrat...

Journal: :Environmental toxicology and chemistry 2001
K Lock C R Janssen

Uptake and elimination kinetics of zinc and cadmium were studied in the oligochaetes Enchytraeus albidus and Eisenia fetida. Even at the highest exposure concentrations where E. fetida survived, the internal zinc concentration was still regulated to a constant level. Enchytraeus albidus could not regulate the internal zinc concentration as well, and the body burden increased after exposure to h...

2005
Peter J. Stuckey Maria Garcia de la Banda Michael J. Maher Kim Marriott John K. Slaney Zoltan Somogyi Mark Wallace Toby Walsh

The G12 project recently started by National ICT Australia (NICTA) is an ambitious project to develop a software platform for solving large scale industrial combinatorial optimisation problems. The core design involves three languages: Zinc, Cadmium and Mercury (Group 12 of the periodic table). Zinc is a declarative modelling language for expressing problems, independent of any solving methodol...

Journal: :international journal of nanoscience and nanotechnology 2007
sh. jamali e. saievar-iranizad s. farjami shayesteh

cadmium sulfide nanoparticles were grown using wet chemical method by dissolving the reactants ofcadmium acetate and sodium sulfide in the presence of thioglycerol (tg) as capping agent in ethanolsolvent. different nanoparticle sizes and size distribution were obtained through varying the molaritiesof thioglycerol. at higher tg concentration, synthesis provides a nearly monodisperse nanoparticl...

Journal: :Environmental Health Perspectives 1984
M R Fox S H Tao C L Stone B E Fry

Experiments with young Japanese quail were conducted to determine whether combined moderate deficiencies of zinc, iron and copper would cause greater uptake and tissue retention of cadmium than the single deficiencies. Birds were fed the experimental diets containing 62 ppb cadmium from hatching to 16 days of age. On day 9 each bird received a dose of 109CdCl2 in its diet. On day 10, the duoden...

Journal: :Water research 2004
Ramiro J E Martins Rosana Pardo Rui A R Boaventura

The biosorption of cadmium(II) and zinc(II) ions onto dried Fontinalis antipyretica, a widely spread aquatic moss, was studied under different values of temperature, initial pH and water hardness. The equilibrium was well described by Langmuir adsorption isotherms. Maximum biosorption capacity of cadmium was independent on temperature and averaged 28.0 mg g(-1) moss, whereas for zinc, capacity ...

Journal: :Physical chemistry chemical physics : PCCP 2012
Christopher A Feigl Amanda S Barnard Salvy P Russo

This paper describes the equilibrium morphologies of zinc sulfide nanoparticles in the wurtzite phase as a function of size, determined using ab initio Density Functional Theory (DFT) simulations and a shape-dependent thermodynamic model predicting the Gibbs free energy of a nanoparticle. We investigate the relative stabilities of a variety of nanoparticle shapes based on the wurtzite structure...

2016
Yuval Ben-Shahar Francesco Scotognella Ilka Kriegel Luca Moretti Giulio Cerullo Eran Rabani Uri Banin

Semiconductor-metal hybrid nanostructures offer a highly controllable platform for light-induced charge separation, with direct relevance for their implementation in photocatalysis. Advances in the synthesis allow for control over the size, shape and morphology, providing tunability of the optical and electronic properties. A critical determining factor of the photocatalytic cycle is the metal ...

Journal: :Journal of Nanomaterials 2023

Group II–VI cadmium sulfide nanoparticles (CdS NPs), a potential alternative to antibiotics, were synthesized using acetate [Cd(Ac)2] as precursor, sodium sulfate reducing agent, and starch capping agent through chemical precipitation techniques. The CdS NPs characterized different characterizing techniques; X-ray diffraction selected area electron patterns verify that the had cubic zinc blende...

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