Results 11 to 20 of about 130,289 (305)

In-situ tests on quantitative evaluation of rock mass integrity based on drilling process index

open access: yesYantu gongcheng xuebao, 2021
The real-time response characteristics of drilling tools contain important engineering geological information. By interpreting the drilling data, the rock mass integrity can be quantitatively evaluated, which provides a new way to quickly obtain the ...
CAO Rui-lang 1, WANG Yu-jie 1, ZHAO Yu-fei 1, WANG Xiao-gang 1, HE Sun-wen 2, PENG Lin-jun 3
doaj   +1 more source

The Comparison of Latero-Medial versus Dorso-Palmar/Plantar Drilling for Cartilage Removal in the Proximal Interphalangeal Joint

open access: yesAnimals, 2021
The aims of the present study were to compare the percentages of articular cartilage removed using a lateral drilling approach of the proximal interphalangeal joint (PIPJ) and a dorsal drilling approach, and to assess the usefulness of digital ...
Alessandro Spadari   +6 more
doaj   +1 more source

Downhole logging as a paeoceanographic tool on ocean drilling program leg 138: Interface between high-resolution stratigraphy and regional syntheses [PDF]

open access: yes, 1992
On Ocean Drilling Program (ODP) Leg 138, standard shipboard procedures were modified to allow for the real-time monitoring of several laboratory core-scanning systems that provide centimeter-scale measurements of saturated bulk density, magnetic ...
Bloomer, Stephen F.   +6 more
core   +6 more sources

Experimental study on measurement of rock strength parameters based on digital drilling technology

open access: yesYantu gongcheng xuebao, 2020
Quick and accurate advance acquisition of mechanical parameters of rock mass is an important prerequisite for guiding the safe construction of rock mass engineering.
WANG Yu-jie 1, SHE Lei 1, 2, 3, ZHAO Yu-fei 1, CAO Rui-lang 1
doaj   +1 more source

A new method for determining strength parameters of rock using digital drilling technology

open access: yesFrontiers in Earth Science, 2023
Fast and accurate prediction for mechanical parameters of rock mass is an important prerequisite for guiding the safe construction of rock engineering.
Guo Qiang, Xudong Ma, Xinxing Liu
doaj   +1 more source

Fatigue evaluation in maintenance and assembly operations by digital human simulation [PDF]

open access: yes, 2010
Virtual human techniques have been used a lot in industrial design in order to consider human factors and ergonomics as early as possible. The physical status (the physical capacity of virtual human) has been mostly treated as invariable in the current ...
A Garg   +42 more
core   +5 more sources

The effects of multiple drilling of a bone with the same drill bit: thermal and force analysis

open access: yesHeliyon, 2022
Repeated use of the same drill bit during drilling wears off the cutting edges, which can lead to a significant increase in heat as a result of friction, which is harmful to a bone above 55 °C.
Jean Gustave Tsiagadigui   +5 more
doaj   +1 more source

Seismic stratigraphy of the Ontong Java Plateau [PDF]

open access: yes, 1993
The Ontong Java Plateau, a large, deep-water carbonate plateau in the western equatorial Pacific, is an ideal location for studying responses of carbonate sedimentation to the effects of changing paleoceanographic conditions.
Bassinot, Frank   +8 more
core   +2 more sources

DRILLING OPTIMIZATION IN ROMANIAN GAS FIELDS USING ADVANCED DIGITAL TOOLS [PDF]

open access: yesRomanian Journal of Petroleum & Gas Technology
The continuous evolution of the energy industry, driven by decarbonization goals and digital transformation imperatives, has led to significant advancements in drilling operations.
Viorel Dragomir   +5 more
doaj   +1 more source

Website socialization as a marketing media for well drilling services in Kalisongo Village, Malang City

open access: yesAbdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang, 2022
Various problems faced by well drillers in carrying out drilling. The problem is the lack of understanding of well drillers in marketing well drilling services that are in accordance with today's all-digital conditions.
Hudriyah Mundzir   +4 more
doaj   +1 more source

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