Results 91 to 100 of about 133,825 (302)
Advanced Engineering Materials, EarlyView.Aluminum and nitride coatings are used in industry because they are hard, resist wear, and protect against oxidation. Adding boron can improve friction behavior and other properties. This study tests coatings on surfaces with different finishes. Results show smoother surfaces perform better, while rough ones wear faster, although coatings can reduce ...
Adrián Claver +9 more
wiley +1 more source
Shiyou jixie, 2018 The PWD(pressure measurement-while-drilling) system can provide real-time bottom hole pressure data, improve the accuracy of bottom hole pressure control, prevent the occurrence of downhole complex conditions and improve the drilling time-effectiveness ...
吕海川, 艾维平, 盛利民, 邓乐
doaj
Electromagnetic measurement while drilling technology based on the carrier communication principle
Petroleum Exploration and Development, 2013 To improve data transfer rate and signal telemetry depth in electromagnetic measurement while drilling (EM-MWD), and to solve the problems of short life expectancy and poor reliability of drill pipes as well as serious electromagnetic scattering, this ...
Yi SU, Xin QI, Yang LIU, Jinguang ZHANG
doaj +1 more source
Monitoring and Analysis of Frozen Debris Lobes, Phase I [PDF]
, 2012 INE/AUTC 12 ...
Daanen, Ronald P. +2 more
core
Plasma sprayed titanium coatings with/without a shroud [PDF]
, 2020 : Titanium coatings were deposited by plasma spraying with and without a shroud. The titanium coatings were then assessed by scanning electron microscopy.
Zhou, Hong
core
Method for calculation of drilling-and-blasting operations parameters for emulsion explosives [PDF]
, 2019 Purpose. Development of a new method for calculation of drilling-and-blasting operations parameters during underground mining with application of emulsion explosives taking into account their energy characteristics as well as physical and mechanical ...
Khomenko, O +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele +2 more
wiley +1 more source
Wind tunnel model and method [PDF]
, 1974 The design and development of a wind tunnel model equipped with pressure measuring devices are discussed. The pressure measuring orifices are integrally constructed in the wind tunnel model and do not contribute to distortions of the aerodynamic surface.
Jackson, C. M., Jr., Summerfield, D. G.
core +1 more source
A parametric study for the design of an optimized ultrasonic-percussive planetary drill tool [PDF]
, 2016 Traditional rotary drilling for planetary rock sampling, in situ analysis, and sample return are challenging because the axial force and holding torque requirements are not necessarily compatible with lightweight spacecraft architectures in low-gravity ...
Harkness, Patrick +4 more
core +1 more source
Electroactive Metal–Organic Frameworks for Electrocatalysis
Advanced Functional Materials, Volume 36, Issue 43, 29 May 2026.Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska +7 more
wiley +1 more source