Results 41 to 50 of about 52,719 (329)

Tracing the evolution of root coverage: Clinical milestones leading to a minimally invasive era

open access: yesJournal of Periodontology, EarlyView.
Abstract Over the past several decades, periodontal plastic surgery has undergone a remarkable transformation, particularly in the field of root coverage procedures. This review traces the historical evolution of surgical techniques, from the early use of pedicle flaps and free gingival grafts (FGGs) to the development of bilaminar approaches ...
Lorenzo Tavelli   +6 more
wiley   +1 more source

Grafting and Budding Fruit Trees [PDF]

open access: yes, 1953
PDF pages ...
Patterson, J. Vernon
core  

How I Do It: A Stepwise Surgical Technique for Fisch Class B Glomus Tympanicum

open access: yesThe Laryngoscope, EarlyView.
We describe a stepwise retroauricular microsurgical workflow for bulky tympanic paragangliomas, combining circumferential canaloplasty with temporary removal and replacement of the tympanomeatal flap and malleus to optimize exposure and bleeding control.
Stéphane Gargula   +8 more
wiley   +1 more source

Mechanical planetary compensating drive system [PDF]

open access: yes, 1973
Drive enables two concentric output shafts to be controlled independently or rotated as a unit. Possible uses are pointing and tracking devices, rotary camera shutters with variable light control, gimbal systems with yaw and pitch movement, spectrometer ...
Gerdts, J. C., Jr., Zeiger, R. J.
core   +1 more source

A Hybrid RF Coil for Whole‐Brain Imaging in Non‐Human Primates at 7 T

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultra‐high field MRI (≥ 7 T) offers unprecedented potential for mapping non‐human primate (NHP) brain function. However, complex electromagnetic systems are required to meet the challenges of UHF imaging and the mechanical demands of awake NHP studies.
Elias Djaballah   +5 more
wiley   +1 more source

Finite Element Analysis of Double Arc and Quadruple Arc Spiral Bevel Gear based on Abaqus

open access: yesJixie chuandong, 2017
The quadruple arc spiral bevel gear is a new type of gear with quadruple arc tooth profile applied to the spiral bevel gear. The three-dimensional model is built in Solid Works based on the tooth surface equation of spiral bevel gear with circular arc ...
Ren Zhongyi   +3 more
doaj  

Research on High Speed Dry Cutting Technology and Machining Experiment of Small Module Spiral Bevel Gear

open access: yesJixie chuandong, 2021
Traditional small module spiral bevel gear milling needs to use a large number of cutting fluid,which will not only cause environmental pollution,but also increase production costs,the new technology of high speed dry cutting does not use cutting fluid ...
Qi Liu, Hua Zhang, Jianjun Yang
doaj  

Surface geometry of circular cut spiral bevel gears [PDF]

open access: yes
The tooth surface principal radii of curvature of crown (flat) gears were determined. Specific results are presented for involute, straight, and hyperbolic cutter profiles.
Coy, J. J., Huston, R. L.
core   +1 more source

Boundary conditions at the gas sectors of superhydrophobic grooves

open access: yes, 2018
The hydrodynamics of liquid flowing past gas sectors of unidirectional superhydrophobic surfaces is revisited. Attention is focussed on the local slip boundary condition at the liquid-gas interface, which is equivalent to the effect of a gas cavity on ...
Asmolov, Evgeny S.   +3 more
core   +1 more source

Comparing the In‐Plane Shear Behavior of Glass Fiber‐Reinforced and Carbon Fiber‐Reinforced Polymer Laminates With the Same Epoxy Matrix System in ±45° Tensile Tests

open access: yesPolymer Composites, EarlyView.
Schematic illustration of ±45° tensile testing, including detection of first‐ply failure (FPF) by optical crack detection and acoustic emission monitoring, comparison of FPF values with ASTM D3518 and D3039 criteria, and resulting ply level stress states at FPF for GF‐ and CF‐epoxy laminates.
Maria Gfrerrer   +4 more
wiley   +1 more source

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