Results 81 to 90 of about 3,200,666 (325)

Evaluation of rock mass quality and its mechanical properties through digital drilling process monitoring

open access: yesJournal of Rock Mechanics and Geotechnical Engineering
The evaluation of rock mass quality and its mechanical properties is crucial for tunnel construction. The basic quality (BQ) method is the national standard for rock mass classification in China, with the BQ value determined by the uniaxial compressive ...
Xinfang Li   +5 more
doaj   +1 more source

An experimental comparative study of drilling efficiency and temperature elevation with unmodified and modified medical drills in pig tibia bone

open access: yesHeliyon, 2019
Background: There are no medical drill specifications capable of achieving bone drilling in a short time under low-thrust and low-speed drilling. Gekkou-drill® is an industrial drill that enables drilling with low cutting resistance by its characteristic
Makoto Enokida   +4 more
doaj   +1 more source

Projekt for manufacturing of gears for Company Stab spol. s r. o. [PDF]

open access: yes, 2020
Diplomová práca opisuje projekt na založenie novej divízie pre firmu ktorá sa zaoberá generálnymi opravami strojov. V prvej časti práce je rozoberaná teoretická časť o výrobnom procese ozubenia a ekonomická časť tejto práce. Hlávne časti práce sú analýza
Štefan Staník
core  

Boron‐Doped Nano‐Crystalline Coated Carbon Fibers for Phasic Dopamine Sensing

open access: yesAdvanced Healthcare Materials, EarlyView.
This uniform coating presents a mix of graphitic and diamond‐like carbon to create a mechanically and electrically robust alternative for the electrochemical detection of dopamine. The electrodes in this work possess the equivalent sensitivity to the state‐of‐the‐art FSCV dopamine detecting electrodes, whilst demonstrating an ability to withstand ...
Simon J. Higham   +19 more
wiley   +1 more source

Research and Development of ZJ15/750Y Intelligent Hydraulic Drilling Rig

open access: yesShiyou jixie
Automatic and intelligent operation of drilling rig is the pursue of the drilling equipment industry, and there are less efforts on research and development of intelligent hydraulic drilling rig.
Zhou Linshuai   +4 more
doaj   +1 more source

Combining the effects of undersized drilling and bone density on implant insertion torque

open access: yesBrazilian Journal of Oral Sciences, 2017
Aim: This study evaluated the influence of surgical undersized drilling on insertion torque of an implant system at low bone density. Methods: Implant site preparations were made in two polyurethane foam blocks with different densities, where two ...
Bernardo Alievi Camargo   +5 more
doaj   +1 more source

Application of artificial intelligence methods for identifying and predicting complications in the construction of oil and gas wells: problems and solutions

open access: yesGeoresursy, 2020
This paper poses and solves the problem of using artificial intelligence methods for processing large volumes of geodata from geological and technological measurement stations in order to identify and predict complications during well drilling.
Alexander D. Chernikov   +5 more
doaj   +1 more source

Evaluation of the Dual Impact of Nanotechnologies on Health and Environment Through Alternative Bridging Models

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores how alternative invertebrate and small‐vertebrate models advance the evaluation of nanomaterials across medicine and environmental science. By bridging cellular and organismal levels, these models enable integrated assessment of toxicity, biodistribution, and therapeutic performance.
Marie Celine Lefevre   +3 more
wiley   +1 more source

Thermal Processing Creates Water‐Stable PEDOT:PSS Films for Bioelectronics

open access: yesAdvanced Materials, Volume 37, Issue 13, April 2, 2025.
Instead of using chemical cross–linkers, it is shown that PEDOT:PSS thin films for bioelectronics become water‐stable after a simple heat treatment. The heat treatment is compatible with a range of rigid and elastomeric substrates and films are stable in vivo for >20 days.
Siddharth Doshi   +16 more
wiley   +1 more source

Development and Practice of Cloud Collaborative Platform for Downhole Measurement Tools

open access: yesShiyou jixie
The digital transformation and intelligent development of the petroleum industry have become a consensus. The digital solution for surface equipment is relatively mature, while the digital upgrade of downhole tools is difficult. The measurement tools are
Che Yang   +5 more
doaj   +1 more source

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