Results 51 to 60 of about 5,119,526 (356)

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Application of Response Surface Methodology in Lunar Deep Rock Layer Drilling Experiments in Low-Temperature and Anhydrous Environments

open access: yesAerospace
The Chang’e project has completed a sampling mission of the shallow lunar soil layer; however, the exploration of the deep lunar rock layer remains unaddressed.
Xinyue Zou, Qian Li, Lanlan Xie
doaj   +1 more source

Full Dip Drill and Drilling Technology in Bottom Suction Roadway

open access: yesMeikuang Anquan, 2020
To improve the construction efficiency of bottom suction roadway through layer hole, the ZDY3600LQ type crawler drill was developed, meanwhile, the hard rock drilling tool assembly with hydraulic DTH hammer and PDC bit was developed. Test results showed
WU Di, ZHAO Jiangpeng, XU Pengbo
doaj   +1 more source

Impregnated drill bits strengthened by nanoparticles for mineral exploration drilling [PDF]

open access: yes, 2018
In order to improve the drilling efficiency and service life of impregnated diamond drill bit, WC and ZrO2 nanoparticles were introduced into traditional drill bit matrix.
Baochang, L.   +3 more
core  

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Testing of Sealing Elements for FIB Apparatus Designed to Liquidate Open Eruption by Drilling Tools [PDF]

open access: yes, 2018
Petroleum and natural gas still have their place among the most important resources in many industrial areas. Their global consumption influences an increasing demand on the quality of drilling works and the efficiency ...
Bujok, Petr   +4 more
core  

The IceCube Neutrino Observatory: Instrumentation and Online Systems [PDF]

open access: yes, 2016
The IceCube Neutrino Observatory is a cubic-kilometer-scale high-energy neutrino detector built into the ice at the South Pole. Construction of IceCube, the largest neutrino detector built to date, was completed in 2011 and enabled the discovery of high ...
Aartsen, M. G.   +352 more
core   +3 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

Rate of Penetration Optimization using Moving Horizon Estimation [PDF]

open access: yesModeling, Identification and Control, 2016
Increase of drilling safety and reduction of drilling operation costs, especially improvement of drilling efficiency, are two important considerations in the oil and gas industry. The rate of penetration (ROP, alternatively called as drilling speed) is
Dan Sui, Bernt Sigve Aadnøy
doaj   +1 more source

Bi-cropping fodder maize in an existing (grass)clover sward [PDF]

open access: yes, 2006
Organic cultivation of fodder maize is still considered to be difficult. Weed pressure, soil structure degradation during harvest and low nutrient efficiency are some of the common problems.
Eekeren, N. van   +2 more
core  

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