Results 11 to 20 of about 922,436 (391)

Numerical Simulations and Experiments on Single-Tooth Rock-Breaking

open access: yesMachines, 2022
The rock-breaking efficiency of a drilling tool directly affects the production costs and progress of foundation construction. It is essential to understand the mechanism of mechanical rock-breaking to improve rock-breaking efficiency.
Heyuqiu Li   +5 more
doaj   +1 more source

Infrared Thermographic Evaluation of Temperature Modifications Induced during Implant Site Preparation with Steel vs. Zirconia Implant Drill

open access: yesJournal of Clinical Medicine, 2020
Background: The heat produced during implant site osteotomy can potentially interfere with and influence the osseointegration process of a dental implant.
A. Scarano, F. Lorusso, Sammy Noumbissi
semanticscholar   +1 more source

Difficult birth of the agent. Memory of the body, identity and social competence

open access: yesAnaliza i Egzystencja, 2021
Body memory is a relatively new philosophical notion, entangled in interiorization of the past – paradoxically this entanglement liberates the individual from the dictature of the present flow and enables her/his autonomy.
Magdalena Żardecka
doaj   +1 more source

Effect of Bit Configuration in Impact Penetration Tests with Button Bits

open access: yesJournal of MMIJ, 2016
Computer simulation of percussive rock drilling requires appropriate numerical models for the interactions among the drill body, rod, rod joint, bit, and rock.
Yingzong LIANG   +4 more
doaj   +1 more source

A miniature surgical drill using ultrasonic/sonic frequency vibration [PDF]

open access: yes, 2015
A study is presented of a miniature ultrasonic surgical drill designed for bone biopsy, based on an ultrasonic/sonic drill which converts high frequency to low frequency vibrations through a freely vibrating mass between an ultrasonic transducer-horn and
Li, Li   +2 more
core   +1 more source

Analysis of drilling conditions by a catalog mining method based on Fuzzy c-means algorithm

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2020
To support the engineer in the selection of drills and their machining parameters, we propose a novel catalog mining system based on data mining techniques applied on drill catalogs by using twice the Fuzzy c-means method along with the Maximum ...
Claire-Amelie JANOT   +5 more
doaj   +1 more source

Hardware/engineering battery-operated drills are more cost-effective as compared to orthopedic drills

open access: yesJournal of Orthopaedic Diseases and Traumatology, 2019
Background: Drilling of the bone is common to produce holes for screws and pin insertion, to fix the fractured parts for immobilization. For this purpose, we need a power drill machine.
Sneh Prabhakar   +4 more
doaj   +1 more source

Outcomes of 8 × 8 mm osteotomy in powered external dacryocystorhinostomy

open access: yesIndian Journal of Ophthalmology, 2023
Purpose: To study the endoscopic ostium characteristics and outcome of 8 × 8 mm osteotomy in external dacryocystorhinostomy (DCR) using the microdrill system.
Ruchi Goel   +7 more
doaj   +1 more source

Late Winter Foraging by Honeybees (Hymenoptera: Apidae) at Sapsucker Drill Holes [PDF]

open access: yes, 2017
Observations of Apis mellifera foraging at sapsucker drill holes were made during February 1988 in southwestern Virginia. Foraging bouts were dependent upon temperature; more bees visited drill holes when ambient temperatures exceeded 10oC. Honeybees did
Williams, Charles E
core   +3 more sources

Home - About - Disclaimer - Privacy