Results 111 to 120 of about 188,421 (295)

Fatigue evaluation in maintenance and assembly operations by digital human simulation [PDF]

, 2010
Virtual human techniques have been used a lot in industrial design in order to consider human factors and ergonomics as early as possible. The physical status (the physical capacity of virtual human) has been mostly treated as invariable in the current ...
A Garg, A Hill, A Ren, AR Tilley, B Witmer, Bo Hu, D Anderson, D Chaffin, D Chaffin, D Roman-Liu, D Wood, Damien Chablat, DB Chaffin, Fouad Bennis, François Guillaume, G Chryssolouris, G Li, H Bubb, H Hou, H Iridiastadi, H Sato, I Ben-Gal, J Ding, J Fuller, J Liu, J Ritchie, J Yang, K El ahrache, K El ahrache, L Ma, Liang Ma, M Damsgaard, NI Badler, P Chedmail, S Mathiassen, T Komura, T Xia, W Khalil, W Rohmert, Wei Zhang, Y Arzi, Y Chen, Y Giat   +42 more
core   +5 more sources

Insight into the Internal Structure of Biogenic, Synthetic and Geological Apatite by Electron Microscopy and X‐Ray Scattering

Advanced Functional Materials, EarlyView.
Apatite occurs in many forms in nature, e.g. in teeth and geological minerals. Internally, biological apatite contains nanocrystals that are also found in synthetically prepared calcium phosphate nanoparticles which are used in biomedicine, e.g. for gene and drug delivery and for bone regeneration. Abstract Calcium phosphate is the inorganic component (
Kathrin Kostka, Oleg Prymak, Kateryna Loza, Matthias Epple   +3 more
wiley   +1 more source

Enhanced Lithology Recognition in Coal Mining: A Data-Driven Approach with DBO-BiLSTM and Wavelet Denoising

Applied Sciences
This study investigates the relationship between anchor cable drilling parameters and roadway roof strata properties. The goal is to enable rapid and accurate rock type identification.
Jian Cui, Ziwei Ding, Chaofan Zhang, Jiang Liu, Wenxing Zhang   +4 more
doaj   +1 more source

Test-Bed Performance of an Ice-Coring Drill Used with a Hot Water Drilling System

Journal of Marine Science and Engineering, 2019
Ice cores from ice shelves contain abundant paleoclimatic information and provide essential information concerned with the prediction of future climatic change and global sea level variations.
An Liu, Rusheng Wang, Xiaopeng Fan, Yang Yang, Xingchen Li, Liang Wang, Pavel Talalay   +6 more
doaj   +1 more source

Full and half-wavelength ultrasonic percussive drills [PDF]

, 2018
Ultrasonic-percussive drills are a leading technology for small rock drilling applications where power and weight-on-bit are at a premium. The concept uses ultrasonic vibrations to excite an oscillatory motion in a free-mass, which then delivers ...
Harkness, Patrick, Li, Xuan, Lucas, Margaret   +2 more
core   +1 more source

Laser‐Based Sculpturing of Embedded Ultrathin Metal‐Oxide Nanopores for Enhanced Biomolecular Sensing

Advanced Functional Materials, EarlyView.
Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby, Yulia Marom, Guocong Lin, Aleksandra Baron‐Wiechec, Amit Meller   +4 more
wiley   +1 more source

Results of the experimental research of the heat-transfer jet pressure to the rock surface during thermal reaming of the borehole [PDF]

, 2018
The performed analysis of scientific sources confirms the existence of a small number of publications devoted to the experimental research of the gasdynamics and plasmodynamics of jets used as a heat- transfer medium in the thermal ...
Potapchuk, Iryna, Voloshyn, Oleksii, Zhevzhyk, Oleksandr, Zhovtonoha, Mykola   +3 more
core   +1 more source

Domain‐Wall‐Free Sliding Ferroelectricity in Fully Commensurate 3R Transition Metal Dichalcogenide Bilayers

Advanced Functional Materials, EarlyView.
It is reported that the ferroelectric switching behavior of rhombohedral (3R) phase transition metal dichalcogenide (TMD) bilayers strongly depends on their domain structures. Single‐domain TMDs (SD‐TMDs) with domain‐wall‐free structures exhibit robust and stable polarization switching, whereas poly‐domain TMDs (PD‐TMDs) with randomly distributed ...
Ji‐Hwan Baek, Seong Chul Hong, Jinwoo Kim, Hyeongseok Lee, Hyun Woo Jeong, Kenji Watanabe, Takashi Taniguchi, Min Hyuk Park, Gwan‐Hyoung Lee   +8 more
wiley   +1 more source

Foam used during EPB tunnelling in saturated sand, parameters determining foam consumption [PDF]

, 2012
The amount of foam injected during drilling with an EPB-shield in saturated sand is quite often based on experience and/or empiric relations. A method is presented in to calculate the amount of foam needed to create a muck with limited or no grain stress.
Bezuijen, Adam
core   +1 more source

Single Solid‐State Ion Channels as Potentiometric Nanosensors

Advanced Functional Materials, EarlyView.
Single gold nanopores functionalized with mixed self‐assembled monolayers act as solid‐state ion channels for direct, selective potentiometric sensing of inorganic ions (Ag⁺). The design overcomes key miniaturization barriers of conventional ion‐selective electrodes by combining low resistivity with suppressed loss of active components, enabling robust
Gergely T. Solymosi, Gyula Jágerszki, Levente Illés, Péter Fürjes, Róbert E. Gyurcsányi   +4 more
wiley   +1 more source