Results 71 to 80 of about 347,684 (229)

Highly biocompatible porous NiTi alloys

, 2020
Nickel Titanium alloys have proved to be a perfect choice for materials used for medical devices like catheters, pacemakers and stone removal mesh. However, there are some challenges related to the shape and size modifications required to suffice the ...

core   +1 more source

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

steel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin, Andi Ard Maidhah, Maziar Ramezani, Wojciech Macek, Cho‐Pei Jiang   +4 more
wiley   +1 more source

In-situ investigation of dynamic deformation in NiTi shape memory alloys under laser induced shock

, 2017
The free surface particle velocity of NiTi target shocked with a pulsed laser beam was measured with a photonic Doppler velocimetry (PDV) system to study the dynamic deformation behavior of NiTi alloys at ultra-high strain rate of 10(6)similar to 10(7)/s.
夏伟光, 王曦, 黄晨光, 魏延鹏, Wang, X (reprint author), Beijing Jiaotong Univ, Sch Mech Elect & Control Engn, Beijing 100044, Peoples R China., 吴先前   +5 more
core   +1 more source

Mechanical and Metallurgical Evaluation of Four Rotary Nickel‐Titanium File Systems: A Multimethod Study

International Endodontic Journal, EarlyView.
ABSTRACT Aim To compare four rotary nickel‐titanium (NiTi) file systems (Endostar E3 Azure, Endostar E3, VDW.ROTATE, and Mtwo) using a multimethod approach to evaluate their mechanical and metallurgical properties. Materials and Methods Endostar E3 Azure, Endostar E3, VDW.ROTATE, and Mtwo (all size 25/0.06 with an S‐shaped cross‐section; 52 instruments
Doğuş Bayraktar, Uğur İnan
wiley   +1 more source

Comparison of Uncovered and Covered Biliary SEMS for the Salvage of Obstructed SEMS: A Multicenter Retrospective Propensity Score–Weighted Study

Journal of Gastroenterology and Hepatology, EarlyView.
In patients undergoing secondary SEMS placement after initial uncovered stent failure, fully covered and uncovered SEMSs showed comparable patency, survival, and safety. However, mechanisms of recurrent biliary obstruction differed by stent type, with tumor ingrowth in uncovered SEMSs and sludge or food impaction in fully covered SEMSs.
Ho Seung Lee, Gunn Huh, Sung Hyun Cho, Dongwook Oh, Jae Min Lee, Tae Jun Song, Hoonsub So, Hong‐Sik Lee, Dong‐Wan Seo   +8 more
wiley   +1 more source

Hemocompatibility investigation of the NiTi alloy implanted with tantalum

Journal of Materials Science: Materials in Medicine, 2011
A composite TiO(2)/Ta(2)O(5) nano-film has been formed on the NiTi shape memory alloy by Ta implantation. The wettability, protein adsorption, platelets adhesion and hemolysis tests are conducted to evaluate the hemocompatibility. The contact angle measurements showed that the surface of the NiTi alloy kept hydrophilic before and after Ta implantation,
Tingting, Zhao, Yan, Li, Yuzhi, Gao, Yan, Xiang, Hong, Chen, Tao, Zhang   +5 more
openaire   +2 more sources

Nanoprecipitate characterisation in NiTi and aluminium alloys: A TEM‐based overview

Journal of Microscopy, EarlyView.
Abstract Nanoscale precipitates are central to the functional and mechanical performance of many advanced alloys, yet their characteristics and spatial distributions can be directly resolved only by electron microscopy. In this poster‐style article, focused ion beam‐prepared TEM lamellae are used to provide a microscopy‐focused overview of ...
Seyed Aref Golsorkhi, Opemipo Adetan, Melodie Fickenscher, Dinc Erdeniz   +3 more
wiley   +1 more source

Supportive periodontal care during active orthodontic therapy in patients with history of stage IV periodontitis: A narrative review

Periodontology 2000, EarlyView.
Abstract The present narrative review aims to summarize the existing literature on recommendations for supportive periodontal care (SPC) in patients undergoing combined periodontal–orthodontic treatment. It outlines a comprehensive step‐4 treatment sequence in patients diagnosed with stage IV periodontitis and concurrent orthodontic problems.
Alexandra Stähli, Anastasiya Orishko, Jean‐Claude Imber, Andrea Roccuzzo, Anton Sculean, Dimitrios Kloukos, Giovanni E. Salvi   +6 more
wiley   +1 more source

Fracture control parameters for NiTi based shape memory alloys [PDF]

, 2011
In this paper new fracture control parameters for Nickel–Titanium (NiTi) based shape memory alloys (SMAs) are proposed, based on a recent literature analytical model on fracture mechanics of SMAs.
Carmine Maletta, Furgiuele, Franco, Franco Furgiuele, Maletta, Carmine   +3 more
core   +1 more source

Risk Factors for Peritonitis Associated With Endoscopic Ultrasound‐guided Hepaticogastrostomy

DEN Open, Volume 7, Issue 1, April 2027.
ABSTRACT Background and Objectives Endoscopic ultrasound‐guided hepaticogastrostomy (EUS‐HGS) is an alternative therapeutic option for unsuccessful endoscopic retrograde cholangiopancreatography in patients with malignant biliary obstruction.
Junya Sato, Hirotoshi Ishiwatari, Hiroki Sakamoto, Takuya Doi, Masahiro Yamamura, Kazunori Takada, Masao Yoshida, Sayo Ito, Noboru Kawata, Kenichiro Imai, Kinichi Hotta, Hiroyuki Ono   +11 more
wiley   +1 more source