Results 251 to 260 of about 415,894 (316)
Triple-junction perovskite-perovskite-silicon solar cells with power conversion efficiency of 24.4.
Energy Environ SciHu H +16 more
europepmc +1 more source
Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley +1 more source
Karl Popper and the Mechanisms of Hydrogen Embrittlement
Advanced Engineering Materials, EarlyView.Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley +1 more source
Robust Spot Melting by 3D Spot Arrangements in Electron Beam Powder Bed Fusion
Advanced Engineering Materials, EarlyView.This work proposes an approach to replace separately melted contours for spot melting in electron beam powder fusion. Adapting the spot arrangements close to the contour combined with stacking yields a comparable surface quality without the inherent challenges of separate contours, as demonstrated, by electron optical images and roughness measurements.
Tobias Kupfer +4 more
wiley +1 more source
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2023
Abstract When implementing energy storage systems, different forms of energy usually have to be converted into each other. For example, the battery voltage is often not high enough to be used for the conversion of direct current into alternating current. Therefore, inverters and converters are necessary. This chapter explains these power
openaire +1 more source
Abstract When implementing energy storage systems, different forms of energy usually have to be converted into each other. For example, the battery voltage is often not high enough to be used for the conversion of direct current into alternating current. Therefore, inverters and converters are necessary. This chapter explains these power
openaire +1 more source
AJN, American Journal of Nursing, 2017
Danielle Ofri's new book makes the case for listening closely to what patients say.
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Danielle Ofri's new book makes the case for listening closely to what patients say.
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Bell System Technical Journal, 1970
This article describes the constant current, high voltage power facilities which power the SF Submarine Cable repeaters. The overall power system description includes discussions of the power connections to the cable, and a review of overall design requirements and objectives.
E. T. Calkin, I. Golioto
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This article describes the constant current, high voltage power facilities which power the SF Submarine Cable repeaters. The overall power system description includes discussions of the power connections to the cable, and a review of overall design requirements and objectives.
E. T. Calkin, I. Golioto
openaire +1 more source
On the design of a power conversion circuit
APCCAS 2008 - 2008 IEEE Asia Pacific Conference on Circuits and Systems, 2008A kind of power conversion circuit, which converts positive voltage into negative one is presented according to the principle of negative voltage charge pump, so the DC output voltage is doubled. Factors affecting the speed and accuracy of MOS switches are fully considered, and a charge pump with MOS switches working in linear region is designed ...
Mei Jiao +3 more
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Asthma, Power, and the Therapeutic Conversation
Family Process, 1994Previous research has indicated that family therapy may be of use when a child has chronic, uncontrolled asthma. The significant power relations were considered to be those between the child and the parents. In this article, I examine the wider contextual relations that the family encounters when asthma is a problem, and suggest that these relations ...
openaire +2 more sources