Results 41 to 50 of about 188,421 (295)
A Data-Driven Approach to Predict the ROP of Deep Wells in Fukang Sag
Applied Sciences, 2023 In the deep well drilling process in the Fukang Depression of the Eastern Junggar Basin, rock fracturing issues and low rate of penetration (ROP) have posed significant challenges to drilling efficiency.
Yingjie Wang +5 more
doaj +1 more source
Aspects of energy requirements for rock drilling [PDF]
, 1974 Development of laboratory rock breakage techniques to relate energy and surface area produced by slow compression, drop hammer and stamp mill. A detailed study of laboratory rotary-percussive drilling in a wide range of rocks under different ...
Wootton, David
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Spatial and temporal stability of weed patches in cereal fields under direct drilling and harrow tillage [PDF]
, 2020 The adoption of conservation agriculture (CA) techniques by farmers is changing the dynamics of weed communities in cereal fields and so potentially their spatial distribution.
Baraibar Padró, Bàrbara +6 more
core +3 more sources
Arthritis Care &Research, EarlyView.Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead +4 more
wiley +1 more source
Wood wasp inspired space and earth drill [PDF]
, 2010 In this chapter, we explain why the low gravity encountered on Mars or on the Moon and the low mass of the probes, landers and rovers that carry drilling devices limit classical drilling techniques.
Coste, Pierre +3 more
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Improving rock classification in terms of explosivity [PDF]
, 2019 Purpose. To improve rock classification in terms of explosivity relying upon the detailed analysis of characteristics of rating classifications available in the Russian Federation and in the world. Methods.
Kirsanov, A +5 more
core +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
矿业科学学报This paper investigates measurement while drilling for rock strata interface to achieve geological transparency, promote intelligence development, and address the limitations of traditional rock detection methods in coal mines, including slow speed, high
LI Dianshang +5 more
doaj +1 more source
An optimized identification method of coal-bearing stratum lithology
Gong-kuang zidonghua, 2020 In view of difficulties in obtaining stratum information parameters and low accuracy of lithology identification in existing lithology identification method of coal-bearing stratum in coal mine underground, an optimized identification method of coal ...
ZHANG Ning, ZHANG Youzhen, YAO Ke
doaj +1 more source
Response surface methodology integrated modeling of glass fiber reinforced polymer delamination in high speed drilling [PDF]
, 2016 Extensive research efforts has been made in the conventional drilling of glass fiber reinforced polymer, where most researches focused in the studies of drilling parameters and thrust force relationship to delamination and tool wear.
Ahmad, Faiz +3 more
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