Results 91 to 100 of about 739,516 (347)

Field Test Study on Supporting Technology of Granular Retaining Gangue by Cutting Roof and Retaining Roadway in Thick Coal Seam

open access: yesMeikuang Anquan, 2020
Based on the industrial test of cutting roof and retaining roadway mining in Ningtiaota Coal Mine, this paper designs two kinds of supporting schemes for retaining gangue, and compares and analyzes the deformation amount of bulk body and lateral ...
LI Shuai, WANG Hongyu, WEI Qinglong, HOU Shilin
doaj   +1 more source

Experimental Flow Investigation of a Truncated Ideal Contour Nozzle [PDF]

open access: yes, 2006
Various tests showed a significant side load peak for low nozzle pressure ratios during engine start-up and shut down phase. DLR Lampoldshausen carried out tests to examine the flow field in a truncated ideal contour nozzle for low NPR.
Stark, Ralf, Wagner, Bernd
core   +1 more source

Large‐Area 2D Metasurface‐Based Triboelectric E‐Skin Arrays: Contact & Proximity Tactile Mapping with Broadband Acoustic Readouts

open access: yesAdvanced Materials, EarlyView.
Metasurface‐engineered NC‐TENG arrays integrate tactile pressure mapping, non‐contact gesture sensing, and acoustic signal readouts in one ultrathin module, and outperforms pristine PDMS in terms of electrical output and real‐time spatial mapping for next‐gen wearables.
Injamamul Arief   +12 more
wiley   +1 more source

MILLING FORCE MODELING BASED ON EQUIVALENT TURNING FORCE AND OBLIQUE CUTTING FORCE MODEL (MT)

open access: yesJixie qiangdu, 2023
The accuracy of traditional milling force prediction model is low, and it is difficult to provide effective support for the reasonable selection of process parameters in practical production, by synthetically considering the equivalent turning force ...
WU MingZhou   +4 more
doaj  

A Review on Microreactor Design for Effective Fischer–Tropsch Process Intensification

open access: yesAdvanced Materials Technologies, EarlyView.
Design strategies for effective Fischer–Tropsch process intensification are summarized based on experimental and simulation experiences. Recommendations for catalyst loading of packed‐bed and wash‐coated microchannel, microtube, micromonolith, and microstructured reactors are discussed.
Yangjun Wei   +5 more
wiley   +1 more source

RESPONSE ANALYSIS OF SHEARER BEVELING FEEDING PROCESS POWER

open access: yesJixie qiangdu, 2018
The oblique condition of study on mining machine drum load characteristics is the drum( pick) squeeze coal judgment conditions,using the squeeze area and the coal and rock fracture theory,oblique roller axial additional load are obtained.
MAO Jun   +3 more
doaj  

Programmable Dimensional Lithography with Digital Micromirror Devices for Multifunctional Microarchitectures

open access: yesAdvanced Materials Technologies, EarlyView.
This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee   +5 more
wiley   +1 more source

Optimal design of cutting-disc of no-tillage planter based on kinematics analysis and FEA

open access: yesMATEC Web of Conferences, 2016
Excellent performances of cutting and anti-blockageis required for the no-tillage planter, a new model of cutting-disc with oblique ripples has been developed.
Zhao Xu, Chen Dong
doaj   +1 more source

Hand to mouth in a Neandertal : right-handedness in regourdou 1 [PDF]

open access: yes, 2012
We describe and analyze a Neandertal postcranial skeleton and dentition, which together show unambiguous signs of right-handedness. Asymmetries between the left and right upper arm in Regourdou 1 were identified nearly 20 years ago, then confirmed by ...
Bondioli, Luca   +5 more
core   +4 more sources

Wear Characteristic Study of the Flat Slipper of Shearer Considering Oblique Cutting

open access: yes, 2017
In order to investigate the wear characteristics of flat slippers of shearer, this study firstly built up the static model of the whole shearer machine. Basing on the static simulation research for the flat slipper by ANSYS, the maximum values of stress ...
Hui Liu   +3 more
semanticscholar   +1 more source

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