نتایج جستجو برای: manganese dioxide

تعداد نتایج: 117555  

Journal: :Batteries 2022

Nowadays, lithium-ion batteries (LIBs) are one of the most convenient, reliable, and promising power sources for portable electronics, tools, hybrid electric vehicles. The characteristics positive electrode (cathode active material, CAM) significantly contribute to battery’s functional properties. Applying various coatings is productive ways improve work batteries. there many methods depositing...

Journal: :Minerals Engineering 2021

The increasing demand of manganese in the industries and various hindrances its production from low grade ores by conventional method has made it imperative for researchers around world to develop a extraction that is both environment-friendly economical. Bioleaching shown significant potential efficiencies have been found be 70–98% with help bacteria fungi. This study focuses on mixed bacteria...

Journal: :The Journal of General Physiology 1948
George Wald

Ball, Goodwin, and Morton (1946) have reported that vitamin A(1) in contact with solid manganese dioxide is transformed slowly into a substance which displays spectroscopic properties of retinene(1). The latter is known to be the precursor of vitamin A(1) in the rhodopsin cycle of the retinal rods. The synthetic product is here referred to as "retinene(1)." In the present experiments this obser...

2010
Paweł Grabowski Henryk Bem

A method for the determination of uranium and 210Po in high salinity water samples has been elaborated. Both radionuclides are preconcentrated from 0.5 dm3 saline media by co-precipitation with hydrated manganese dioxide, followed by dissolution of the precipitate in 200 mL of 1 M HCl. Uranium isotopes 235U and 238U can be directly determined by ICP MS method with a detection limit of 0.01 ppb ...

2013
Manickam Minakshi Mark G. Blackford Gordon J. Thorogood Touma B. Issa

Boron carbide (B4C) added manganese dioxide (MnO2) used as a cathode material for a Zn–MnO2 battery using aqueous lithium hydroxide (LiOH) as the electrolyte is known to have higher discharge capacity but with a lower average discharge voltage than pure MnO2 (additive free). The performance is reversed when using potassium hydroxide (KOH) as the electrolyte. Herein, the MnO2 was mixed with 0, 5...

2012
Y. E. Yaish A. Katsman G. M. Cohen M. Beregovsky

Related Articles Faster radial strain relaxation in InAs–GaAs core–shell heterowires J. Appl. Phys. 111, 044301 (2012) Controlling domain walls velocities in ferromagnetic ring-shaped nanowires Appl. Phys. Lett. 100, 072405 (2012) Manganese dioxide modified silicon nanowires and their excellent catalysis in the decomposition of methylene blue Appl. Phys. Lett. 100, 063104 (2012) Growth and phot...

2013
H. Roeser

Tritium-labeling o f the ingenol monoester 3-O-tetradecanoylingenol (3-TI), the prototype tumor promoter o f the ingenane type diterpene esters, is described. The preparation starts with oxidation o f 3-TI by manganese dioxide to yield 3-TI-20-aldehyde which is reduced by [3H]sodium borohydride in the presence o f equimolar amounts o f cerium trichloride hexahydrate to give [20-3H]-3-TI. The la...

2009
Manickam Minakshi Gordon Thorogood

The objective of the proposed study is to use ANSTO’s transmission electron microscopy (TEM) and elastic recoil detection analysis (ERDA) combined with Rutherford back scattering (RBS). TEM and its associated techniques like HR-TEM (High resolution) and electron energy loss spectroscopy (EELS) are proposed to determine the lattice fringes and electron diffraction pattern with d-spacing correspo...

Journal: :Nanoscale 2016
Sixiang Cai Hang Hu Hongrui Li Liyi Shi Dengsong Zhang

Manganese based catalysts are highly active in the NH3-SCR reaction for NOx removal. Unfortunately, manganese oxides can be easily deactivated by sulfur dioxide in the flow gas, which has become the main obstacle for their practical applications. To address this problem, we presented a green and facile method for the synthesis of multi-shell Fe2O3@MnOx@CNTs. The morphology and structural proper...

2010
Kazuo Kondo Yoshitami Saito Kiyoo Sato Tatsuya Katayama

as ferromagnetic alloys composed exclusively of non magnetic elements. However, the electrical properties of the alloys have not been studied in details. The purpose of the present report is to present our data on the electrical resistivity of an In-Heusler Cu2.0Mn0.94In1.0 single crystal. The purities of the elements used are 99.9% for electrolytic manganese, 99.9% for oxygen free copper plate...

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