Results 41 to 50 of about 4,570,024 (235)

Preparation of Nanocomposites from Styrene and Modified Graphite Oxides [PDF]

open access: yes, 2004
Graphite oxide was prepared and modified with several ammonium salts and these modified graphite oxides were used to prepare nanocomposites with polystyrene by in situ polymerization of styrene monomer and by melt blending with polystyrene ...
Uhl, Fawn Marie, Wilkie, Charles A.
core   +2 more sources

Experimental Study on the Effect of Thermal Shock on Physical and Mechanical Properties of Limestone

open access: yesApplied Sciences, 2023
Thermal shock is the physical process of rapid cooling of a hot object. The physical and mechanical properties of rocks that have undergone thermal shock will change.
Yunsheng Dong   +3 more
doaj   +1 more source

Cilia-Inspired Bionic Tactile E-Skin: Structure, Fabrication and Applications

open access: yesSensors
The rapid advancement of tactile electronic skin (E-skin) has highlighted the effectiveness of incorporating bionic, force-sensitive microstructures in order to enhance sensing performance. Among these, cilia-like microstructures with high aspect ratios,
Jiahe Yu   +6 more
doaj   +1 more source

In Situ Formation of Oxygen Vacancies Achieving Near‐Complete Charge Separation in Planar BiVO4 Photoanodes

open access: yesAdvances in Materials, 2020
Despite a suitable bandgap of bismuth vanadate (BiVO4) for visible light absorption, most of the photogenerated holes in BiVO4 photoanodes are vanished before reaching the surfaces for oxygen evolution reaction due to the poor charge separation ...
Songcan Wang   +6 more
semanticscholar   +1 more source

In-situ Particle Acceleration in Collisionless Shocks [PDF]

open access: yes, 2005
The outflows from gamma ray bursts, active galactic nuclei and relativistic jets in general interact with the surrounding media through collisionless shocks. With three dimensional relativistic particle-in-cell simulations we investigate such shocks. The
Frederiksen, J. T.   +3 more
core   +3 more sources

Influence of Amplitude-phase Error on MVDR Beamforming of Volume Array

open access: yes水下无人系统学报
Volume array is a kind of three-dimensional array composed of multiple hydrophones, which can increase the aperture of the receiving array of the submarine target and obtain a large spatial gain.
Yan HUANG   +3 more
doaj   +1 more source

In situ analysis for intelligent control [PDF]

open access: yes, 2007
We report a pilot study on in situ analysis of backscatter data for intelligent control of a scientific instrument on an Autonomous Underwater Vehicle (AUV) carried out at the Monterey Bay Aquarium Research Institute (MBARI).
Fox, M.   +4 more
core   +1 more source

Fracture Evolution Mechanisms and Roof Failure Assessment in Shallow-Buried Soft Coal Seams Under Fully Mechanized Caving Mining

open access: yesApplied Sciences
To address the challenges in the collaborative control of strong mine pressure and surface damage during fully mechanized shallow soft coal seam top-coal caving mining, this study takes the 22,031 working face of Xindeng (Zhengzhou, China) Coal Mine as ...
Yongkang Yang   +4 more
doaj   +1 more source

Comparative study of in situ and ex situ MgB2 films deposited by pulsed laser deposition

open access: yes, 2003
Two types of MgB2 films were prepared by pulsed laser deposition (PLD) with in situ and ex situ annealing processes respectively. Significant differences in properties between the two types of films were found.
Bugoslavsky Y   +6 more
core   +1 more source

Building Late-Type Spiral Galaxies by In-Situ and Ex-Situ Star Formation [PDF]

open access: yes, 2014
We analyze the formation and evolution of the stellar components in "Eris", a 120 pc-resolution cosmological hydrodynamic simulation of a late-type spiral galaxy. The simulation includes the effects of a uniform UV background, a delayed-radiative-cooling
Madau, Piero   +2 more
core   +1 more source

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