Results 31 to 40 of about 283,659 (304)

Pyrite oxidation under initially neutral pH conditions and in the presence of Acidithiobacillus ferrooxidans and micromolar hydrogen peroxide [PDF]

, 2012
Hydrogen peroxide (H2O2) at a micromolar level played a role in the microbial surface oxidation of pyrite crystals under initially neutral pH. When the mineral-bacteria system was cyclically exposed to 50 μM H2O2, the colonization of Acidithiobacillus ...
Lin, C., Ma, Y.
core   +2 more sources

Determination of chromium valence state in the CaO–SiO2–FeO–MgO–CrOx system by X-ray photoelectron spectroscopy

High Temperature Materials and Processes, 2020
The chromium valence states in the CaO–SiO2–FeO–MgO–CrOx system were investigated by X-ray photoelectron spectroscopy (XPS). The results indicated that the XPS peaks of Cr 2p3/2 and Cr 2p1/2 locate at the binding energy of ∼577 and ∼586 eV, respectively.
Liu Deman, Diao Jiang, Qiu Yiyu, Wang Guang, Li Gang, Xie Bing   +5 more
doaj   +1 more source

Effect of magnesium on the XPS and Raman spectra of (Ba0.5Sr0.5)(Al0.2-xMgxFe0.8)O3-ξ (x ≤ 0.2)

Journal of Asian Ceramic Societies, 2021
The perovskite-type cubic oxides have found useful applications in catalysis, solid oxide fuel cells, gas sensors, and membrane technology. XPS and Raman studies of a recently developed (Ba0.5Sr0.5)(Al0.2-xMgxFe0.8)O3-ξ (x = 0–0.2) oxygen-permeable ...
Shivendra Kumar Jaiswal, Vijay Kumar Kashyap, Jitendra Kumar   +2 more
doaj   +1 more source

Ultrasound wave propagation through rough interfaces: Iterative methods [PDF]

, 1996
Two iterative methods for the calculation of acoustic transmission through a rough interface\ud between two media are compared. The methods employ a continuous version of the conjugate\ud gradient technique.
Berg, P.M. van den, Berkhoff, A.P., Thijssen, J.M.   +2 more
core   +5 more sources

Structure and Property of Cu Coating on Ultra-thin PI Film Surface Regulated by Substrate Bias Voltage

Yuanzineng kexue jishu
Surface metallization of ultrathin polyimide films is an important development direction in the field of microelectronics, and the deposition of high-performance metal coatings on the surface of ultrathin polyimide films by vacuum coating technology is a
ZHONG Li, CHEN Meiyan, LIU Xuan, ZHANG Yue, YAO Ke, JIANG Yanan, WEI Yuping
doaj   +1 more source

Structure, bonding and morphology of hydrothermally synthesised xonotlite [PDF]

, 2009
The authors have systematically investigated the role of synthesis conditions upon the structure and morphology of xonotlite. Starting with a mechanochemically prepared, semicrystalline phase with Ca/Si=1, the authors have prepared a series of xonotlite ...
A. Stumm, Black L., Black L., Black L., Black L., Chan C. F., Churakov S. V., Hejny C., K. Garbev, L. Black, Liebau F., Low N. M. P., Mamedov K. S., McWhinney H. G., Mekki A., Mollah M. Y. A., Qian G. R., Regourd M., Saito F., Thomassin J. H.   +19 more
core   +1 more source

Site-specific probing of charge transfer dynamics in organic photovoltaics

, 2015
We report the site-specific probing of charge-transfer dynamics in a prototype system for organic photovoltaics (OPV) by picosecond time-resolved X-ray photoelectron spectroscopy.
Arion, Tiberiu, Bluhm, Hendrik, Eberhardt, Wolfgang, Gessner, Oliver, Hussain, Zahid, Nepp, Stefan, Roth, Friedrich, Shavorskiy, Andrey   +7 more
core   +1 more source

Change of Nano Material Electrical Characteristics for Medical System Applications [Corrigendum]

International Journal of Nanomedicine, 2022
Chen P, Zhang X, Jiang K, et al. Int J Nanomedicine. 2019;14:10119–10122. Page 10120, left column, Materials And Methods section, line 2, the text “30 ~ 50 nm thick” should read “30 ~ 60 nm thick”.
Chen P, Zhang X, Jiang K, Zhang Q, Qi S, Man W, Webster TJ, Dai M   +7 more
doaj  

Introduction of functional groups on polyethylene surfaces by a carbon dioxide plasma treatment [PDF]

, 1995
Poly(ethylene) (PE) films were treated with a carbon dioxide (CO2) plasma to study the formation of oxygen-containing functional groups at the surface. Modified and nonmodified films were characterized by X-ray photoelectron spectroscopy (XPS) and water ...
Feijen, Jan, Gerritsen, Hermina F.C., Hoffman, Allan S., Terlingen, Johannes G.A.   +3 more
core   +2 more sources

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source