Results 111 to 120 of about 4,496,230 (391)

The Quantum Absorption Refrigerator

, 2011
A quantum absorption refrigerator driven by noise is studied with the purpose of determining the limitations of cooling to absolute zero. The model consists of a working medium coupled simultaneously to hot, cold and noise baths. Explicit expressions for
Kosloff, Ronnie, Levy, Amikam
core   +1 more source

A Perspective on Powder Metallurgy and Additive Manufacturing of High‐Nitrogen Alloyed Stainless Steels

Advanced Engineering Materials, EarlyView.
This perspective article explores an innovative powder metallurgical approach to producing high‐nitrogen steels by utilizing a mixture of stainless steel and Si3N4. This mixture undergoes hot isostatic pressing followed by direct quenching. The article also examines adapting this method to laser powder bed fusion (PBF‐LB/M) to overcome nitrogen ...
Louis Becker, Felix Radtke, Jonathan Lentz, Simone Herzog, Christoph Broeckmann, Sebastian Weber   +5 more
wiley   +1 more source

A Modular multilevel converter with hybrid redundant strategy for HVDC system

Energy Reports, 2021
As a typical voltage source converter topology, Modular multilevel converter (MMC) widespread used in high voltage direct current (MMC-HVDC) power systems due to its modularization, low harmonic, easy expansion, and high efficiency.
Wanli Jing, Lixin Jia, Lixia Yang, Mengyi Li, Yuxin Ma, Wenyao Sun   +5 more
doaj  

Effect of Hot Working Parameters on Microstructure and Texture Evolution of Hot-Deformed Zr-45Ti-5Al-3V Alloy. [PDF]

Materials (Basel), 2022
Lei Y, Yang Y, Tan Y, Zhang W, Wu S, Ma M.   +5 more
europepmc   +1 more source

Mini-Proceedings of ECT Workshop "Strangeness in Nuclei"

, 2011
This workshop brought together international experts in the research area of strangeness in nuclei physics, working on theory as well as on experiments, to discuss the present status, to develop new methods of analysis and to have the opportunity for ...
Curceanu, C., Zmeskal, J.
core  

Sco X-1: The Evolution and Nature of the Twin Compact Radio Lobes [PDF]

, 2001
The radio components associated with the LMXB Sco X-1 have been monitored with extensive VLBI imaging at 1.7 and 5.0 GHz over four years, including a 56-hour continuous VLBI observation in 1999 June.
Ables J. G., B. J. Geldzahler, Ball L., Black A. R. S., Blandford R. D., C. F. Bradshaw, Cox C. I., E. B. Fomalont, Geldzahler B. J., Hasinger G., Hjellming R. M., Hjellming R. M., Hughes P. A., Margon B. A., Mirabel I. F., Perley R. A., Schalinski C. J., Spencer R. E., Titarchuk L. G., Westphal J. A.   +19 more
core   +4 more sources

Dimensionless Investigations on Energy Conversion and Analysis of Interlayer Time in Laser‐Based Powder Bed Fusion of Polymers for Polyamide 12 with Nanoadditives and Polypropylene

Advanced Engineering Materials, EarlyView.
This study explores the energy conversion in powder bed fusion of polymers using laser beam for polyamide 12 and polypropylene powders. It combines material and process data, using dimensionless parameters and numerical models, to enable the prediction of suitable printing parameters.
Christian Schlör, Moritz Grünewald, Kevin Popp, Ihsan Murat Kusoglu, Stephan Barcikowski, Stan Gann, Thomas Schuffenhauer, Martin Bastian, Claas Bierwisch, Johannes Rudloff   +9 more
wiley   +1 more source

SUMMA hot-ion plasma heating research at NASA Lewis Research Center [PDF]

The SUMMA superconducting magnetic mirror facility and the associated hot-ion plasma research were described. SUMMA is characterized by intense magnetic fields and a large-diameter working bore (41 cm diameter) with room-temperature access.
Lauver, M. R., Patch, R. W., Reinmann, J. J.   +2 more
core   +1 more source

Performance evaluation of an Organic Rankine Cycle (ORC) connected to two-phase closed thermosyphons [PDF]

, 2016
peer reviewedThis paper aims at evaluating the performance of a waste heat-to-power plant using an organic Rankine cycle (ORC) connected to two-phase closed thermosyphons (or gravity-assisted heat pipes or wickless heat pipes).
Declaye, Sébastien, Dumas, Xavier, Ferrand, Ludovic, Le, Van Long, Lemort, Vincent   +4 more
core  

A Novel Approach on Rapid Alloy Development of Tool Steels for Laser Powder Bed Fusion by In Situ Alloying

Advanced Engineering Materials, EarlyView.
A novel approach for alloy development in laser powder bed fusion is introduced. Instead of producing massive samples of one composition at a time, prepressed powder bed samples produced from powder mixtures are processed. Guidelines for the selection of precursor powders are developed.
Felix Großwendt, Anna Strauch, Jonathan Lentz, Arne Röttger, Rainer Fechte‐Heinen, Sebastian Weber, Werner Theisen   +6 more
wiley   +1 more source