Results 21 to 30 of about 1,262,730 (300)

The AIMSS Project - I. Bridging the star cluster-galaxy divide [PDF]

open access: yes, 2014
We describe the structural and kinematic properties of the first compact stellar systems discovered by the Archive of Intermediate Mass Stellar Systems project.
Bradley, D.   +18 more
core   +6 more sources

DEM investigation of the effect of particle breakage on compact properties [PDF]

open access: yesEPJ Web of Conferences, 2021
Particle breakage during compaction affects compaction behavior and the quality of the formed compact. This work conducted a numerical study based on the discrete element method (DEM) to investigate the effect of particle breakage on compaction dynamics ...
Gou Dazhao, An Xizhong, Yang Runyu
doaj   +1 more source

Compact Ultra Wide-Band and Tri-Band Antenna for Portable Device [PDF]

open access: yesRadioengineering, 2020
A compact ultra-wideband (UWB) and triband patch antenna with the partial ground plane is presented in this paper. Initially, the antenna is designed for UWB applications, operating at the UWB portion of the spectrum ranging from 3.1 GHz to 10.6 GHz ...
A. Ghaffar   +5 more
doaj  

Porous dust grains in debris disks [PDF]

open access: yes, 2013
When modeling the density and grain size distribution in debris disks, the minimum particle size is often significantly larger than the corresponding blowout size.
Kirchschlager, Florian, Wolf, Sebastian
core   +1 more source

Leaky-Wave Antenna With Wide Scanning Range Based on Double-Layer Substrate Integrated Waveguide

open access: yesIEEE Access, 2020
A leaky-wave antenna (LWA) based on the double-layer substrate integrated waveguide (SIW) that has a wide scanning range within a narrow bandwidth is proposed.
Peng Luo   +5 more
doaj   +1 more source

Constraining the Cosmological Density of Compact Objects with the Long-Term Variability of Quasars [PDF]

open access: yes, 2002
By comparing the results from numerical microlensing simulations to the observed long-term variability of quasars, strong upper limits on the cosmological density of compact objects in the 0.0001-1 solar mass range may in principle be imposed. Here, this
Alam   +34 more
core   +2 more sources

Bistability in the Shape Transition of Strained Islands [PDF]

open access: yes, 2007
The equilibrium shape of a monatomic strained island on a substrate depends on the step free energies and the difference in surface stress between the island and the substrate.
Gastel, R. van, Zandvliet, H.J.W.
core   +4 more sources

Compact Filtering Switch With Wide-Stopband Response

open access: yesIEEE Access, 2017
A compact filtering switch with wide-stopband responses is presented in this paper. The resonator is designed using microstrip transmission lines and lumped capacitors.
Jin-Xu Xu, Xiu Yin Zhang, Yan-Mei Xue
doaj   +1 more source

The diverse evolutionary paths of simulated high-z massive, compact galaxies to z=0 [PDF]

open access: yes, 2015
Massive quiescent galaxies have much smaller physical sizes at high redshift than today. The strong evolution of galaxy size may be caused by progenitor bias, major and minor mergers, adiabatic expansion, and/or renewed star formation, but it is ...
Genel, Shy   +8 more
core   +3 more sources

Novel Compact Three-Way Filtering Power Divider Using Net-Type Resonators [PDF]

open access: yesRadioengineering, 2015
In this paper, we present a novel compact three-way power divider with bandpass responses. The proposed power divider utilizes folded net-type resonators to realize dual functions of filtering and power splitting as well as compact size.
Wei-Qiang Pan   +2 more
doaj  

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