Results 61 to 70 of about 466,925 (163)

Identifying heterostructured materials

open access: yesMaterials Research Letters
Heterostructured materials comprise domains with markedly different properties whose interactive coupling produces synergistic effects beyond the rule of mixtures.
Yuntian Zhu, Xiaolei Wu
doaj   +1 more source

Effect of different mini implant assisted rapid palatal expansion (MARPE) designs on maxillary protraction in skeletal class III malocclusion: An FEM study

open access: yesContemporary Clinical Dentistry
Background: Four different designs of mini-implant-assisted rapid palatal expansion (MARPE) and protraction in nasomaxillary complex and mid-palatal sutures in late adolescent skeletal Class III malocclusion were compared using a three-dimensional finite
Ashik Suresh   +4 more
doaj   +1 more source

Experimental Study on Stress Evolution and Microseismic Signals under Vibration Conditions of Coal during Excavation and Subsequent Waiting Time

open access: yesShock and Vibration, 2019
An experiment designed to simulate coal during excavation was conducted. Microseismic signals of coal under vibration conditions during excavation and subsequent waiting time of the coal roadway at different excavation speeds were collected and analyzed.
Qifei Wang   +5 more
doaj   +1 more source

A Very Robust AlGaN/GaN HEMT Technology to High Forward Gate Bias and Current

open access: yesActive and Passive Electronic Components, 2012
Reports to date of GaN HEMTs subjected to forward gate bias stress include varied extents of degradation. We report an extremely robust GaN HEMT technology that survived—contrary to conventional wisdom—high forward gate bias (+6 V) and current (>1.8 A/mm)
Bradley D. Christiansen   +4 more
doaj   +1 more source

Analysis of technical specifications of reversible and forward plate compactors

open access: yesВестник СибАДИ
Introduction. Self-propelled plate compactors are soil compaction machines with a flat working body that provide layer-by-layer soil compaction with small-thickness layers. Depending on the method of travel, reversible and forward plate compactors may be
M. A. Afanasev, I. S. Tyuremnov
doaj   +1 more source

轴对称载荷作用下的旋转薄壳类零件的应力分析

open access: yesJixie chuandong, 2004
On the basis of the stress distribution of the rotary thin shell parts under the symmetrical axial loads, the characteristics of stress distribution for the several typical thin shell parts are put forward and the simple design approach to the shell ...
梁治国, 吴春英, 王宁侠
doaj  

On the plastic stress and strain distribution in a forward extrusion

open access: yesOn the plastic stress and strain distribution in a forward extrusion
Summaries of Doctor and Master ...
openaire  

On the origin of acoustic emission in the stress-induced martensite regime of shape memory alloys. [PDF]

open access: yesNat Commun
Lauhoff C   +10 more
europepmc   +1 more source

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