Results 81 to 90 of about 353,031 (193)

Effect of the Dynamic Cone Angle on the Atomization Performance of a Piezoceramic Vibrating Mesh Atomizer

Applied Sciences, 2019
In this paper, we find that the dynamic cone angle of a piezoceramic atomizer is linked to periodic changes in the volume of the micro-cone hole of the atomizer, and such changes affect atomization performance.
Qiufeng Yan, Chuanyu Wu, Jianhui Zhang
doaj   +1 more source

Horizons, Constraints, and Black Hole Entropy

, 2006
Black hole entropy appears to be ``universal''--many independent calculations, involving models with very different microscopic degrees of freedom, all yield the same density of states.
A. Achúcarro, A. Ashtekar, A. Ashtekar, A. Giacomini, A. Strominger, A. Strominger, A.J.M. Medved, A.J.M. Medved, A.W. Peet, B.S. DeWitt, B.S. Kay, C. Barceló, C. Teitelboim, C.-G. Huang, D. Birmingham, D. Birmingham, D. Grumiller, D. Kutasov, D. Louis-Martinez, D.J. Navarro, E. Witten, E. Witten, E. Witten, G. ’t Hooft, G.W. Gibbons, G.W. Gibbons, H.E. Camblong, H.W.J. Blöte, J. Jing, J. Koga, J.A. Cardy, J.D. Brown, J.M. Izquierdo, K. Fredenhagen, K. Skenderis, K.S. Gupta, L. Bombelli, L. Susskind, M. Bañados, M. Bañados, M. Cvitan, M. Cvitan, M.-I. Park, M.K. Parikh, N. Pinamonti, O. Aharony, O. Coussaert, O. Dreyer, P. Di Francesco, P.A.M. Dirac, P.A.M. Dirac, P.G. Bergmann, R. Emparan, R. Manvelyan, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Carlip, S. Coleman, S. Elitzur, S. Silva, S.D. Mathur, S.N. Solodukhin, S.N. Solodukhin, S.P. Robinson, S.W. Hawking, S.W. Hawking, T. Jacobson, T. Regge, V.P. Frolov, V.P. Frolov, W.G. Unruh, W.G. Unruh, Y.-J. Chen   +81 more
core   +1 more source

Self-rounding fabrication of micro-cylindrical electrode arrays and comparative EDM performance in single-crystal and polycrystalline nickel-based superalloys

Journal of Materials Research and Technology
Nickel-based superalloys are widely used in aerospace and energy systems, and their surfaces often feature high-density micro-hole arrays for cooling or fluidic functions.
Liya Jin, Xingwei Sun, Yadong Gong, Heran Yang, Zhixu Dong   +4 more
doaj   +1 more source

Micro Black Hole Production and Evaporation

, 2013
It has been conjectured that Micro Black Holes (MBH) may be formed in the presence of large extra dimensions. These MBHs have very small mass and they decay almost instantaneously. Taking into consideration quantum effects, they should Hawking radiate mainly to Standard Model particles, this radiation then gets modified by the non trivial geometry ...
Nafooshe, Saeede, O'Loughlin, Martin, Garzelli, Maria Vittoria   +2 more
openaire   +2 more sources

Current Research of Micro Electrical Discharge Machining of Micro-hole

Journal of Harbin University of Science and Technology, 2018
In this paper，by analyzing the double-sided lapping /polishing processing mechanism，the stress analysis was carried out on the workpiece，and we establish the pads relatively workpiece in machining the movement principle of trajectory model，pads，relative ...
XIE Bao-cheng, CUI He-xin, ZHANG Yuan, LIU Xian-li   +3 more
doaj   +1 more source

The Response of Sorghum, Groundnut, Sesame, and Cowpea to Seed Priming and Fertilizer Micro-Dosing in South Kordofan State, Sudan

Agronomy, 2015
This study was undertaken with the objective of evaluating micro-dosing of mineral fertilizer combined with seed priming in sorghum, groundnut, sesame, and cowpea.
Elgailani A. Abdalla, Abdelrahman K. Osman, Mahmoud A. Maki, Fadlalmaola M. Nur, Salah B. Ali, Jens B. Aune   +5 more
doaj   +1 more source

Laser Micromachining for the Nucleation Control of Nickel Microtextures for IR Emission

Micromachines
Femtosecond laser micromachining was utilized to build up a micro-through-hole array into a sacrificial film, which was coated onto a copper specimen. This micro-through hole was shaped in the paraboloidal profile, with its micro-dimple on the interface ...
Tatsuhiko Aizawa, Hiroki Nakata, Takeshi Nasu   +2 more
doaj   +1 more source

EFFECTIVENESS OF DIFFERENT METHODS FOR FATIGUE LIFE ENHANCEMENT OF FASTENER HOLES IN D16AT ALUMINUM ALLOY [PDF]

, 2019
An evaluation of the effectiveness of three different methods for enhancement of fatigue life of fastener holes in D16AT aircraft Al-alloy has been made.
Anchev A.P., Duncheva G.V., Ganev N., Maximov J.T.   +3 more
core  

Twist and teleportation analogy of the black hole final state

, 2007
Mathematical connection between the quantum teleportation, the most unique feature of quantum information processing, and the black hole final state is studied taking into account the non trivial spacetime geometry.
Doyeol Ahn, K. Kraus, M. S. Kim, M. A. Nielsen, N. D. Birrell, R. M. Wald   +5 more
core   +1 more source

Micro-hole drilling by tightly focused vector beams

Optics Letters, 2018
We demonstrated that azimuthally polarized beams offer high-speed laser micro-hole drilling compared with radially and linearly polarized beams under a tight focusing condition. The speed was evaluated by piercing time by vector beams for several objective lenses with different numerical apertures (NAs).
Shugo Matsusaka, Yuichi Kozawa, Shunichi Sato   +2 more
openaire   +2 more sources