Results 71 to 80 of about 1,271,550 (296)

Quasar Microlensing: when compact masses mimic smooth matter

, 2006
The magnification induced by gravitational microlensing is sensitive to the size of a source relative to the Einstein radius, the natural microlensing scale length.
Geraint F. Lewis, Kayser R., Lewis G. F., Refsdal S., Refsdal S., Refsdal S., Rodrigo Gil‐Merino   +6 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Design and Improvement Methodology of Super Compact Dual-Band Dual-Circularly Polarized Antennas for UHF/VHF Satellite IoT Communication

IEEE Open Journal of Antennas and Propagation
This paper proposes a design methodology to obtain a dual-band dual-circularly polarized antenna based on aperture-shared subsequently-fed quadruple inverted-F antennas (QIFAs) with an ultra-miniaturized size of only $100\times 100\times 18~{\mathrm ...
Zhenchuan Liang, Haidong Chen, Chengjian Zhang, Zhiye Zhou, Huibing Chen, Yuetong Fang, Huawei Yu, Wenquan Che   +7 more
doaj   +1 more source

How Robust Are the Size Measurements of High-redshift Compact Galaxies?

, 2014
Massive quiescent galaxies at $z \approx 2$ are apparently much more compact than galaxies of comparable mass today. How robust are these size measurements?
Davari, Roozbeh, Ho, Luis C., Huang, Song, Peng, Chien Y.   +3 more
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Finite size effects at phase transition in compact U(1) gauge theory [PDF]

, 1997
We present and discuss the results of a Monte-Carlo simulation of the phase transition in pure compact U(1) lattice gauge theory with Wilson action on a hypercubic lattice with periodic boundary conditions.
Billoire, Borgs, Claude Roiesnel, Cox, Evertz, Ferrenberg, Ferrenberg, Ferrenberg, Gupta, Jersák, Jersák, Jersák, Jersák, Kerler, Roiesnel   +14 more
core   +2 more sources

Electrochemical Evaluation of Compressed Selective Laser Melted AlSi7Mg and AlSi10Mg Alloys in Chloride Environment

Advanced Engineering Materials, EarlyView.
The corrosion performance of AlSi7Mg and AlSi10Mg alloys produced through selective laser melting (SLM) was examined under compressive stress in a chloride environment. Electrochemical analyses, including open‐circuit potential (OCP), potentiodynamic polarization (CPP), and electrochemical impedance spectroscopy (EIS), were complemented by scanning ...
Femi John Akinfolarin, Samson Dare Oguntuyi, Peter Apata Olubambi   +2 more
wiley   +1 more source

Flowing sand - a possible physical realization of Directed Percolation

, 1999
A simple model for flowing sand on an inclined plane is introduced. The model is related to recent experiments by Douady and Daerr [Nature 399, 241 (1999)] and reproduces some of the experimentally observed features.
Domany, Eytan, Hinrichsen, Haye, Jimenez-Dalmaroni, Andrea, Rozov, Yadin   +3 more
core   +1 more source

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

Advanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira, Marcella Gaute Cavalcante Xavier, Abdoul‐Aziz Bogno, Piter Gargarella, José Eduardo Spinelli   +4 more
wiley   +1 more source

SARS-CoV-2 Detection Using Reverse Transcription Strand Invasion Based Amplification And A Portable Compact Size Instrument [PDF]

Sci Rep, 2021
Rosenstierne MW, Joshi S, Danielsen ET, Webb H, Luong DM, Bjerring J, Hindkær J, Jørgensen L, Blauenfeldt J, Bojesen A, Holck F, Lau J, Bangsgaard L, Lind J, Dragheim M, Jacobsen M, Elkær R, Clauwaert S, Christensen K, Polacek C, Fomsgaard A, Ojalehto T, Tullila A, Brummer M, Jensen CAJ, Jensen FH, Schneider UV, Lisby JG, Jørgensen RL, Warthoe T, Finding E, Warthoe P.   +31 more
europepmc   +2 more sources