Results 31 to 40 of about 161,873 (336)
Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
Applied SciencesDown-the-hole (DTH) hammer drilling has high rock-breaking efficiency and a decisive advantage in hard rock drilling, which can reduce the cost of geothermal drilling.
Hongyu Ye +5 more
doaj +1 more source
Core drill's bit is replaceable without withdrawal of drill stem - A concept [PDF]
, 1970 Drill bit is divided into several sectors. When collapsed, the outside diameter is forced down the drill stem, when it reaches bottom the sectors are forced outward and form a cutting bit.
Rushing, F. C., Simon, A. B.
core +1 more source
Advanced Functional Materials, EarlyView.A 3D bone scaffold with osteogenic properties and capable of hardening in vivo is developed. The scaffold is implanted in a ductile state, and a phase transformation of the ceramic induces the stiffening and strengthening of the scaffold in vivo. Abstract Calcium phosphate 3D printing has revolutionized customized bone grafting.
Miguel Mateu‐Sanz +7 more
wiley +1 more source
Analysis and optimization of traveling wave vibration of large diamond thin-wall drill bits
Jin'gangshi yu moliao moju gongchengObjectives: To reduce the vibration and noise generated by thin-walled drill bits during the drilling and cutting process, various designs of thin-walled drill bits were studied, including conventional thin-walled drill bits, open-hole thin-walled drill ...
Xingdong LIU +4 more
doaj +1 more source
Minimizing thermal damage to vascular nerves while drilling of calcified plaque
BMC Research Notes, 2019 Objective Drilling of calcified plaque (DCP) inside the artery is a method for removing calcified plaques. This study investigated the effect of drill. To validate the maximum temperature calculated by computer simulation, this value was also measured by
Seifollah Gholampour, Keyvan Hajirayat
doaj +1 more source
地质科技通报, 2023 Objective With the development of drilling technology for deep strata, the study of the dynamic characteristics and parametric response law of drill bits and deep complex strata during drilling has become a key and difficult point in research. Methods In
Guojun Wen +5 more
doaj +1 more source
Understanding Decoherence of the Boron Vacancy Center in Hexagonal Boron Nitride
Advanced Functional Materials, EarlyView.State‐of‐the‐art computations unravel the intricate decoherence dynamics of the boron vacancy center in hexagonal boron nitride across magnetic fields from 0 to 3 T. Five distinct regimes emerge, dominated by nuclear spin interactions, revealing optimal coherence times of 1–20 µs in the 180–350 mT range for isotopically pure samples.
András Tárkányi, Viktor Ivády
wiley +1 more source
Method for machining holes in composite materials [PDF]
, 1987 A method for boring well defined holes in a composite material such as graphite/epoxy is discussed. A slurry of silicon carbide powder and water is projected onto a work area of the composite material in which a hole is to be bored with a conventional ...
Clemons, Johnny M. +4 more
core +1 more source
THE EFFECT OF THE ANISOTROPY DRILLING INDEX ON THE DEVIATION OF THE WELL AXIS FROM THE DESIGN PROFILE [PDF]
, 2017 Analytical studies of the interaction of the load on the bottom and the bottom hole assembly of the drill string with the bottom itself and the wall of the well during drilling tilted formations have been carried out.
Dobrutsky, R. L. +2 more
core +2 more sources