نتایج جستجو برای: indium metallurgy
تعداد نتایج: 11424 فیلتر نتایج به سال:
An oxidative methyl esterification of aldehydes was effectively achieved. The trivalent indium reagent, indium(III) triflate, was revealed to accelerate the reactions in many cases. Aromatic aldehydes with various substituents were subjected to this method, and each produced the corresponding methyl esters in good to excellent yields within a relatively short reaction time.
An elastoplastic phase field model is developed to investigate the role of lateral confinement on morphology of thin films grown heteroepitaxially on patterned substrates. Parameters of the model are chosen to represent InxGa1-xAs thin films growing on GaAs patterned with SiO2. We determined the effect of misfit strain on morphology of thin films grown in 0.5μm patterns with non-uniform deposit...
A symmetric gain optoelectronic mixer based on an indium gallium arsenide (In0.53Ga0.47As)/indium phosphide (InP) symmetric heterojunction phototransistor structure is being investigated for chirpedAM laser detection and ranging (LADAR) systems operating in the ‘‘eye-safe” 1.55 lm wavelength range. Signal processing of a chirped-AM LADAR system is simplified if the photodetector in the receiver...
Occupational exposure to indium compound particles has recently been associated with lung disease among workers in the indium-tin oxide (ITO) industry. Previous studies suggested that excessive alveolar surfactant and reactive oxygen species (ROS) may play a role in the development of pulmonary lesions following exposure to indium compounds. However, toxicity at the cellular level has not been ...
A novel route called thermal replacement reaction was demonstrated for synthesizing eco-friendly ZnO@γ-In2Se3 hetero-structural nanowires on FTO glass by replacing the element cadmium with indium for the first time. The indium layer was coated on the surface of the ZnO nanowires beforehand, then CdSe quantum dots were deposited onto the coated indium layer, and finally the CdSe quantum dots wer...
Development of Market Strategies of Metallurgical Enterrprises after Restructuring of Steel Industry
B. Gajdzik, The Silesian University of Technology, Faculty of Materials Science and Metallurgy, Katowice, Poland Before metallurgical enterprises started implementation of marketing activities they had to go through restructuring processes which included all areas of their market activities. Privatised metallurgical enterprises after economic transformation gradually implemented marketing to th...
A probabilistic approach has been developed to extract recurrent serious Occupational Accident with Movement Disturbance (OAMD) scenarios from narrative texts within a prevention framework. Relevant data extracted from 143 accounts was initially coded as logical combinations of generic accident factors. A Bayesian Network (BN)-based model was then built for OAMDs using these data and expert kno...
V. A. Andreyachshenko Faculty of Nanotechnology and Metallurgy, Karaganda state technical University, Karaganda In the paper there is studied stressed-and-strained state formed in a billet by fullering in a tool with movable elements. It is determined that compressing stresses prevail in the studied tool; they improve the quality of the processed billets. Even maximum main normal stresses have ...
B. Gajdzik, A. Wyciślik, The Silesian University of Technology, Faculty of Materials Science and Metallurgy, Katowice, Poland The publication characterises the quantity and quality methods applied in the assessment of the environmental aspects. The method of cumulated environmental loads is particularly interesting, where the network of process connections within an enterprise and between it an...
This thesis focuses on studies of nano-scale materials in electronic packaging applications with respect to following aspects: surface analysis of nano-scale oxide of lead-free solder particles, and thermal performance and mechanical property studies of nano-scale fiber and metal composite-based thermal interface materials. The composition and thickness of the solder oxide have a direct impact ...
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