نتایج جستجو برای: pmma polymethylmethacrylate

تعداد نتایج: 5353  

2015
Mina S Makary Ivan L Zucker John M Sturgeon

Percutaneous vertebroplasty has gained widespread popularity and demonstrated clinical efficacy in the treatment of spinal osteoporotic compression fractures and pathologic osteolytic lesions. Despite its rapid pain relief and safety, this minimally invasive intervention has exhibited some rare complications over the past decade. In this case study, we describe a patient with an uncommon compli...

2012
Brian E Dalton Andrew C Kohm Larry E Miller Jon E Block Robert D Poser

PURPOSE Traditional balloon kyphoplasty (BK) is a common treatment for symptomatic vertebral compression fractures. The purpose of this study was to compare a novel vertebral augmentation technique, radiofrequency-targeted vertebral augmentation (RF-TVA), to BK for restoration of vertebral height, cavity creation, and polymethylmethacrylate (PMMA) delivery and interdigitation into the surroundi...

2017
Nathan Man-Wai Wu Hok-Lai Wong Vivian Wing-Wah Yam

A novel photochromic benzo[b]phosphole oxide has been demonstrated to display photochromic properties with excellent fatigue resistance and thermal irreversibility in polymethylmethacrylate (PMMA) thin film under ambient conditions. The remarkable photochromic behaviour can be achieved by rational molecular design, in which the weakly aromatic phosphole oxide is directly incorporated into the p...

Journal: :Acta orthopaedica Belgica 2002
T Siebel J Kelm M Porsch T Regitz W H Neumann

Two-stage revision in infected knee arthroplasty is standard practice. One problem during the interim period is soft tissue fibrosis. Attempts have been made to preserve leg length and ligament length by introducing spacers, usually made out of antibiotic-loaded bone cement. We present a new interim prosthesis, which is made intra-operatively out of polymethylmethacrylate (PMMA). Antibiotic-loa...

Journal: :Microelectronic Engineering 2021

Ultra-thin chips (UTCs) are needed to meet the performance and packaging related requirements of flexible electronics 3D integrated circuits (ICs). However, handling UTCs (<50 μm thick), particularly after thinning, is a challenging task as excessive mechanical stresses could lead cracking. Such damages be prevented by restricting acceptable levels. Herein, we present new reliable cost-effectiv...

Journal: :Fire and Materials 2022

Although thermoplastics possess many desirable traits as solidified materials, they are combustible and burn readily. Post burning samples of polymethylmethacrylate (PMMA) the focus this study. During flame spread, PMMA forms a bubble containing molten surface layer that influences spread rate mass efflux. This study examines formation distribution bubbles inside sample has previously been subj...

2014
Sreyashi Sarkar

A newly designed polymethylmethacrylate (PMMA) conico-cylindrical flask (CCF) with an inner arrangement consisting of eight equidistantly spaced rectangular strips mounted radially on a circular disk to provide additional surface area for microbial attachment was employed for antimicrobial compounds and esterase production by two biofilm-forming marine isolates, Streptomyces sundarbansensis sp ...

Journal: :Advanced Optical Materials 2022

Increasingly compact and powerful light emitting diodes require the development of efficient optical diffusers to manage their lighting capability according required application. In this study, a cost-effective strategy is demonstrated for fabricating micro-structured polymethylmethacrylate (PMMA) white sources. By combining different laser-based processes, namely direct laser engraving (DLE), ...

Journal: :Journal of Oral Science 2021

A study was conducted to evaluate the basic mechanical properties of a pure cellulose nanofiber (CNF) material in comparison with commercial denture base (polymethylmethacrylate [PMMA] acrylic resin). The working hypothesis that CNFs have potential for use as materials. Pure CNF specimens fabricated under various conditions were examined. flexural strength (FS) and modulus (FM) measured using t...

2004
Tapio Mäkelä Tomi Haatainen Päivi Majander Jouni Ahopelto

Inherently conducting polymers have been used in several applications for flexible electronics, for example in organic thin film transistors (OTFT), organic light emitting diodes (OLED), organic photovoltaic cells and electrochromic devices [1-3]. Nanoimprinting may offer a high throughput method to produce low cost devices [4] also when functional polymers such as conducting polymers are used....

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