Results 101 to 110 of about 161,873 (336)

Removal of Broken Cannulated Drill Bit. [PDF]

Cureus, 2021
Al-Kharouf KF, Abbas K, Anjum S, Khan FI.   +3 more
europepmc   +1 more source

The influence of design and technological factors on the durability of the installed carbide explosion equipment of three-cone drill bits [PDF]

, 2022
Andrii Slipchuk, Roman Jakym, Oleksandr Vishnevsky   +2 more
openalex   +1 more source

Ultrasonic/Sonic Rotary-Hammer Drills [PDF]

Ultrasonic/sonic rotary-hammer drill (USRoHD) is a recent addition to the collection of apparatuses based on ultrasonic/sonic drill corer (USDC). As described below, the USRoHD has several features, not present in a basic USDC, that increase efficiency ...
Badescu, Mircea, Bao, Xiaoqi, Bar-Cohen, Yoseph, Kassab, Steve, Sherrit, Stewart   +4 more
core   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced 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, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Design of cavity drill bit while drilling for gas drainage of crossing borehole

Gong-kuang zidonghua, 2019
In order to improve gas drainage effect of crossing borehole, cavity drilling technology is often used to increase part borehole diameter of coal seam section, which avoids invalid footage of hole section in rock layer.
GAO Xiaoliang, ZHANG Xianzhen, LU Qianhai   +2 more
doaj   +1 more source

Design modification of surgical drill bit for final osteotomy site preparation towards improved bone-implant contact. [PDF]

Heliyon, 2023
Vaidya PV, Dutta A, Rooj S, Talukdar R, Bhombe K, Seesala VS, Syed ZQ, Bandyopadhyay TK, Dhara S.   +8 more
europepmc   +1 more source

Estimating Hardness from the USDC Tool-Bit Temperature Rise [PDF]

A method of real-time quantification of the hardness of a rock or similar material involves measurement of the temperature, as a function of time, of the tool bit of an ultrasonic/sonic drill corer (USDC) that is being used to drill into the material ...
Bar-Cohen, Yoseph, Sherrit, Stewart
core   +1 more source

Дослідження зв'язку між поздовжніми і крутильними коливаннями бурильної колони [PDF]

, 2014
У статті розглянуто коливання бурильної колони, що виникають під час взаємодії долота з вибоєм. На основі теоретичних досліджень отримано математичну модель поглиблення вибою, яка визначає зв’язок між поздовжніми і крутильними коливаннями бурильної ...
Гоголь, В. І., Огородніков, П. І., Світлицький, В. М.   +2 more
core  

Artificial Symbiosis for Bulk Production of Bacterial Cellulose Composites

Advanced Materials, EarlyView.
Co‐cultivation of the cellulose‐producing bacterium with the microalga enables bulk formation of bacterial cellulose under static incubation, with photosynthetically active oxygen‐generating sites throughout the medium. This symbiotic platform supports 3D cellulosic constructs with geometries dictated by the vessel shape.
Kui Yu, Sing Teng Chua, Ran Zhao, Alyssa Smith, Michael Kühl, Alison G. Smith, Tom Ellis, Silvia Vignolini   +7 more
wiley   +1 more source

Surgical management of a penetrating drill bit injury to the skull base. [PDF]

Surg Neurol Int, 2022
Encarnacion-Ramirez MJ, Aquino AA, Castillo REB, Melo-Guzmán G, López-Vujnovic D, Blas A, Acosta-Garcés R, Bernés-Rodríguez M, Guerra RM, Ayala-Arcipreste A, Nurmukhametov R, Efe IE.   +11 more
europepmc   +1 more source