Results 1 to 10 of about 63,940 (291)

Impact of intelligent phacoemulsification software on torsional phacoemulsification surgery

open access: yesClinical Ophthalmology, 2012
Silay Canturk Ugurbas, Sinan Caliskan, Atilla Alpay, Suat Hayri UgurbasDepartment of Ophthalmology, Bulent Ecevit University School of Medicine, Zonguldak, TurkeyBackground: The purpose of this study was to compare phacoemulsification energy parameters ...
Canturk Ugurbas S   +3 more
doaj   +6 more sources

Suppression of torsional oscillations based on IMPACT controlling structure [PDF]

open access: yesTheoretical and Applied Mechanics, 2006
In this paper, an algorithm for suppression of the torsional oscillations, in the computer controlled servo systems, is purposed. A few modification of the IMPACT structure (Internal Model Principle and Control Together) in the digitally controlled ...
Matijević Milan   +3 more
doaj   +3 more sources

Stick-slip vibration characteristic of PDC bit cutting composite strata based on discrete element method

open access: yesMeikuang Anquan, 2023
For the problem of stick-slip vibration caused by hard rock formation in the process of drill bit penetrating in coal mine, and the discrete element method (DEM) was employed to study the rock cutting performance and stick-slip vibration behavior of PDC ...
Jian CHEN   +6 more
doaj   +1 more source

Design of a New Type of Torsional Impactor and Analysis of Its Impact Performance

open access: yesApplied Sciences, 2021
In view of the stick-slip phenomenon in deep and hard rock drilling, a new type of torsional impactor that can provide torsional impact vibration was designed.
Xianfeng Tan   +5 more
doaj   +1 more source

The Impact of Testicular Torsion on Testicular Function [PDF]

open access: yesThe World Journal of Men's Health, 2020
Torsion of the spermatic cord is a urological emergency that must be treated with acute surgery. Possible long-term effects of torsion on testicular function are controversial. This review aims to address the impact of testicular torsion (TT) on the endocrine- and exocrine-function of the testis, including possible negative effects of torsion on the ...
Frederik M. Jacobsen   +6 more
openaire   +6 more sources

Theoretical and Experimental Study on the Transient Time-Frequency Characteristics of the Bending-Torsional Coupling Motions of a Rub-Impact Dual-Rotor System

open access: yesShock and Vibration, 2021
This paper focuses on the fault characteristics of the bending and torsional motions of a rub-impact dual-rotor system caused by aircraft flight maneuvers.
Tian Gao, Shuqian Cao, Tiancheng Zhang
doaj   +1 more source

Research on torsional stiffness of flexspline-flexible bearing contact pair in harmonic drive based on macro-micro scale modeling

open access: yesFrontiers in Materials, 2023
The flexspline and flexible bearing constitute a critical contact pair in a harmonic drive system, and their torsional stiffness has a significant impact on the performance characteristics manifested by the harmonic drive.
Qiushi Hu, Heng Li, Guang Wang, Lei Li
doaj   +1 more source

Linear Longitudinal Strength Analysis of a Multipurpose Cargo Ship under Combined Bending and Torsional Load

open access: yesJournal of Marine Science and Engineering, 2023
Cargo ships with wide hatches usually have thin walls and limited torsional rigidity. Consequently, conducting a comprehensive torsional analysis is important because these loads can exert a significant impact. In this paper, the structural response of a
Joynal Abedin   +2 more
doaj   +1 more source

Analysis of the Torsional Load Capacity of V-Section Band Clamps [PDF]

open access: yes, 2014
This paper investigates the torsional load capacity of three sizes of V-section band clamps when assembled onto rigid flanges by comparing experimental data with a developed theoretical model.
Barrans, Simon   +2 more
core   +1 more source

Numerical investigation of the effects of pedestrian barriers on aeroelastic stability of a proposed footbridge [PDF]

open access: yes, 2004
A numerical investigation into the aerodynamic characteristics and aeroelastic stability of a proposed footbridge across a motorway in the north of England has been undertaken.
Salisbury, I, Taylor, I. J., Vezza, M.
core   +2 more sources

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