Results 81 to 90 of about 2,183 (305)

Исследование свойств дуги в вакуумной дугогасительной камере при малых расстояниях между контактами [PDF]

, 2010
Изучены свойства вакуумной дуги, полученной при пробое межконтактного промежутка 0,25...1,00 мм. Показано, что свойства такой дуги идентичны свойствам вакуумной дуги, возникающей при отключении нагрузки вакуумным выключателем.
Лавринович, Валерий Александрович, Хоанг Туан Ань   +1 more
core  

Statistics of vacuum breakdown in the high-gradient and low rate regime [PDF]

, 2017
Peer ...
Calatroni, Sergio, Degiovanni, Alberto, Djurabekova, Flyura, Giner-Navarro, Jorge, Korsbäck, Anders, Rajamäki, Robin, Wuensch, Walter   +6 more
core   +2 more sources

3D Printed Multimaterial Microfluidic Transistors

Advanced Materials Technologies, EarlyView.
We introduce a biocompatible, high resolution photopolymer resin that closely mimics the Young's Modulus (elasticity) and reversible stretchability (no hysteresis) of poly(dimethylsiloxane) (PDMS), enabling the fabrication of microfluidic transistors (i.e., microvalves capable of proportional amplification) by multimaterial stereolithography (mSLA ...
Alireza Ahmadianyazdi, Wei Huang, Kaustav A. Gopinathan, Ivan Stepanov, Lisa Horowitz, Ting‐Yuan Tu, Mehmet Toner, Albert Folch   +7 more
wiley   +1 more source

Boltzmann equation studies on electron swarm parameters in Townsend breakdown of copper vapor plasma using independently assessed electron-collision cross sections

AIP Advances, 2019
Electron transport coefficients in copper vapor plasma are calculated both by two-term expansion of electron Boltzmann equation Bolsig+ and tracking the random motion of electrons using Monte Carlo collision code METHES based upon recently evaluated ...
Wei Yang, Xiaohui Meng, Qianhong Zhou, Zhiwei Dong   +3 more
doaj   +1 more source

Microstructure Formation and Resistivity Change in CuCr during Rapid Solidification

Metals, 2017
The formation of the surface-near microstructure after a current interruption of CuCr contact materials in a vacuum interrupter is characterized by a fast heating and subsequently rapid solidification process.
Ulla Hauf, Alexander Kauffmann, Sandra Kauffmann-Weiss, Alexander Feilbach, Mike Boening, Frank E. H. Mueller, Volker Hinrichsen, Martin Heilmaier   +7 more
doaj   +1 more source

Apollo command module mockup flammability tests [PDF]

Apollo command module mockup flammability tests using three different ...
Bricker, R. W., Crabb, J. P., Primeaux, G. R., Schomburg, C.   +3 more
core   +1 more source

Perfusion Bioreactor Culture Incorporating Mechanical Confinement Enhances Mesenchymal Stem Cell Extracellular Vesicle Production and Wound Healing Potential

Advanced Materials Technologies, EarlyView.
Scalable manufacturing challenges and limited potency remain two of the most intransigent issues limiting clinical translation of EV therapeutics. Mechanical cues can induce phenotypic changes and increased vesiculation in EV source cells without the use of extraneous reagents, chemicals, and/or cargo, thereby potentially drastically improving the ...
Emily H. Powsner, Raith Nowak, Stephanie M. Kronstadt, Nicholas H. Pirolli, Talia J. Solomon, Kristin Nikolov, William Pieper Holeman, Ian M. Smith, Kimberly M. Stroka, John P. Fisher, Steven M. Jay   +10 more
wiley   +1 more source

Analysis of Arc Re-Ignition in Vacuum Interrupter-Based HVdc Circuit Breakers

IEEE Access
The protection of HVdc systems has long been challenged by the absence of natural current zero-crossing, typically addressed using L-C branches. However, the phenomenon of multiple arc reignitions in vacuum interrupter (VI) based HVdc circuit breakers ...
Tamer Eliyan, Ali Saeed Almuflih, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

An improved rocket-borne electric field meter for the middle atmosphere [PDF]

Improvements in a rocketborne electric field meter designed to measure the atmosphere's electric field and conductivity in the middle atmosphere are described.
Burton, D. L., Smith, L. G.
core   +1 more source

Can I Have Your Attention? Implications of the Research on Distractions and Multitasking for Reference Librarians [PDF]

, 2014
The media have identified the last decade as “the age of distraction.” People today find it harder to work on long, sustained tasks because distractions are eroding their attention span, fostering a culture of discontinuity.
Dewan, Pauline
core   +3 more sources