Results 61 to 70 of about 517,779 (310)

Real-time adaptive filtering of dental drill noise using a digital signal processor [PDF]

open access: yes, 2006
The application of noise reduction methods requires the integration of acoustics engineering and digital signal processing, which is well served by a mechatronic approach as described in this paper.
Atherton, MA   +3 more
core  

Assessing Altered Coating Adhesion on Plasma‐Deoxidized Surfaces Under Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates the effectiveness of atmospheric pressure plasma pretreatment in modifying silicon and stainless steel surfaces to improve adhesion. Argon‐hydrogen plasma increases surface roughness and improves adhesion strength, whereas pure argon results in smoother surfaces and structural changes.
Selina Raumel   +6 more
wiley   +1 more source

Push-and-Twist Drillstring Assemblies [PDF]

open access: yes, 2017
Deep drilling using a rigid drillstring requires the assembly and disassembly of multiple drill pipes. The interfaces between these pipes provide a challenge for automation because they must transmit large drilling forces and movements while, at the same
Firstbrook, David G.   +5 more
core  

Investigation of Oxygen‐Free Wetting Behavior of Aluminum on Copper via Molecular Dynamics Simulations and Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
The wettability of aluminum droplets (Al) on different copper substrates (Cu), where liquid Al spreads on solid Cu surfaces to form a liquid–solid interface, is studied numerically and experimentally. The experimental and numerical results show good agreement in the fast‐spreading regime.
Shan Lyu   +8 more
wiley   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

open access: yesAdvanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht   +5 more
wiley   +1 more source

Use of Disaster Management Computerized Simulation System in a teaching hospital of Tehran University of Medical Sciences [PDF]

open access: yesحیات, 2004
Introduction: With a dramatic increase in costly mass casualty incidents over the past few decades, disaster planning and preparedness now represent a prominent part of health care policy and practice.
J Nasl Seraji, H Dargahi
doaj   +1 more source

Rock drill for recovering samples [PDF]

open access: yes, 1969
Rotary impact-type rock drill for recovering rock ...
Ford, A. G.
core   +1 more source

Deterministic Detection of Single Ion Implantation

open access: yesAdvanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead   +6 more
wiley   +1 more source

A Few Considerations About the Action of Vibration on the Human Elbow Joint

open access: yesRomanian Journal of Transport Infrastructure
Vibrations produced by modern equipment and machines used at work or in various other situations affect the human body over time. Studies have shown that the organs of our body have a certain resonance frequency.
Gabriela Dogaru Marina
doaj   +1 more source

Survey of information concerning large diameter deep hole drilling [PDF]

open access: yes, 1972
Data are presented, covering drilling techniques, factors affecting penetration rates, cost estimation, and system improvement.

core   +1 more source

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