Results 51 to 60 of about 1,056,070 (342)

DEVICE FOR DETERMINING LOAD ON DRILL BIT

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2016
The article outlines the materials of the researches, aimed at studying the loads, acting on the drill bit of cutting and shearing principle in the process of drilling rock sample at the stand. A placing scheme of the measuring equipment (strain gauges),
V. V. Dolgushin   +5 more
doaj   +1 more source

Stratigraphy of the Hawai'i Scientific Drilling Project core (HSDP2): Anatomy of a Hawaiian shield volcano [PDF]

open access: yes, 2007
The Hawai'i Scientific Drilling Project (HSDP2) successfully drilled ∼3.1 km into the island of Hawai'i. Drilling started on Mauna Loa volcano, drilling 247 m of subaerial lavas before encountering 832 m of subaerial Mauna Kea lavas, followed by 2019 m ...
Baker, Michael   +3 more
core   +1 more source

CONCEPTUAL DEVELOPMENT OF THE TRANSITION FROM DRILL AND BLAST EXCAVATION TO NON-BLASTING METHODS FOR THE PREPARATION OF MINED ROCK IN SURFACE MINING

open access: yesRudarsko-geološko-naftni Zbornik, 2019
This article is devoted to the conceptual development of the transition from drill and blast excavation to a non-blasting method for the preparation of hard rock before excavation at construction material deposits. The scientific and technical literature
B. Sobko   +3 more
semanticscholar   +1 more source

Oxygen and ROS Delivery for Infected Wound Healing and Future Prospects

open access: yesAdvanced Healthcare Materials, EarlyView.
Bacterial infection is a major driver of delayed wound healing and postsurgical readmissions; with rising antibiotic resistance, solid peroxide–releasing biomaterials offer sustained delivery of ROS/O2 for antimicrobial control and microenvironmental modulation.
Ayden Watt   +7 more
wiley   +1 more source

The application of CBN on the lunar rock drill

open access: yes, 2015
In the lunar rock drill mission, the drill bit design is restricted by the environment and system load. As the executive unit of the drill bit, the cutter and its material decides the drilling system's penetration performance.
D. Zhao   +5 more
semanticscholar   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

open access: yesAdvanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades   +7 more
wiley   +1 more source

Development of Tools for Rock Drill in China

open access: yesTeshugang, 2006
The development of production of tools for rock drill in China and present domestic market condition of rock drill tools for handheld rock drills, tools for hydraulic rock drill vehicle, connected rod for pneumatic drill vehicle and tools for down-the ...
董鑫业, 胡铭
doaj  

Drilling into molten rock at Kilauea Iki [PDF]

open access: yes, 1978
Report Numbers: SAND-78-0443C; CONF-780708-1; OSTI ID: 6700728The scientific feasibility of extracting energy directly from buried circulating magma resources is being assessed.
Colp, John L., Okamura, R.T.
core  

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

A Piezoelectric-Driven Rock-Drilling Device for Extraterrestrial Subsurface Exploration

open access: yesShock and Vibration, 2018
The rocks on extraterrestrial objects contain plenty of original geological and biological information. Drilling and sampling are an essential task in lunar exploration or future explorations of other planets like mars. Due to the limitation of payloads,
He Li   +5 more
doaj   +1 more source

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