keyword
MENU ▼
Read by QxMD icon Read
search

Ceramic

keyword
https://www.readbyqxmd.com/read/28103275/a-theoretical-model-for-predicting-residual-stress-generation-in-fabrication-process-of-double-ceramic-layer-thermal-barrier-coating-system
#1
Yan Song, Weijie Wu, Feng Xie, Yilun Liu, Tiejun Wang
Residual stress arisen in fabrication process of Double-Ceramic-Layer Thermal Barrier Coating System (DCL-TBCs) has a significant effect on its quality and reliability. In this work, based on the practical fabrication process of DCL-TBCs and the force and moment equilibrium, a theoretical model was proposed at first to predict residual stress generation in its fabrication process, in which the temperature dependent material properties of DCL-TBCs were incorporated. Then, a Finite Element method (FEM) has been carried out to verify our theoretical model...
2017: PloS One
https://www.readbyqxmd.com/read/28102826/ceramic-particle-engulfment-by-fibroblasts-does-not-alter-at-all-cell-behavior
#2
Pierre-Antoine Faye, Olivier Roualdes, Fabrice Rossignol, Daniel Jean Hartmann, Alexis Desmoulière
Despite many studies, the impact of ceramic particles on cell behavior remains still unclear. The aim of the present study was to investigate the effects of ceramic nano-sized particles on fibroblastic cells. Fibroblasts (dermal fibroblasts freshly isolated from skin samples and WI26 fibroblastic cells) were cultured in monolayer in the presence of alumina or cerium-zirconia particles (��� 50 nm diameter) at two concentrations (100 or 500 ��g.mL-1). Fluorescent alumina particles were also used. Cell morphology, cytoplasmic ceramic incorporation using confocal and transmission electron microscopy, and migration using silicon insert, were analyzed...
January 19, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28102338/strengthening-of-ceramic-based-artificial-nacre-via-synergistic-interactions-of-1d-vanadium-pentoxide-and-2d-graphene-oxide-building-blocks
#3
Andrea Knöller, Christian P Lampa, Felix von Cube, Tingying Helen Zeng, David C Bell, Mildred S Dresselhaus, Zaklina Burghard, Joachim Bill
Nature has evolved hierarchical structures of hybrid materials with excellent mechanical properties. Inspired by nacre's architecture, a ternary nanostructured composite has been developed, wherein stacked lamellas of 1D vanadium pentoxide nanofibres, intercalated with water molecules, are complemented by 2D graphene oxide (GO) nanosheets. The components self-assemble at low temperature into hierarchically arranged, highly flexible ceramic-based papers. The papers' mechanical properties are found to be strongly influenced by the amount of the integrated GO phase...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28102327/super-strong-materials-for-temperatures-exceeding-2000%C3%A2-%C3%A2-c
#4
Laura Silvestroni, Hans-Joachim Kleebe, William G Fahrenholtz, Jeremy Watts
Ceramics based on group IV-V transition metal borides and carbides possess melting points above 3000 °C, are ablation resistant and are, therefore, candidates for the design of components of next generation space vehicles, rocket nozzle inserts, and nose cones or leading edges for hypersonic aerospace vehicles. As such, they will have to bear high thermo-mechanical loads, which makes strength at high temperature of great importance. While testing of these materials above 2000 °C is necessary to prove their capabilities at anticipated operating temperatures, literature reports are quite limited...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28100862/-bone-flap-resorption-after-cranioplasty-in-pediatric-patients-report-of-2-cases
#5
Rintaro Yokoyama, Takeshi Mikami, Shouhei Noshiro, Kei Miyata, Kentaro Toyama, Katsuya Komatsu, Noriaki Kikuchi, Tadashi Hasegawa, Nobuhiro Mikuni
Aseptic bone flap resorption, a rare complication after cranioplasty following decompressive craniectomy, is more likely to develop in children. We experienced two cases of aseptic bone flap resorption and identified potential pathophysiological mechanisms through histological findings. In the first case, an 11-year-old girl underwent decompressive craniectomy due to brain swelling with contusion. An autologous bone flap was cryopreserved for four months. Twenty-five months after cranioplasty with autologous bone flap, aseptic bone flap resorption was observed, and cranioplasty was performed with ceramic bone...
January 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/28097927/assessment-and-comparison-of-three-high-aluminum-fly-ash-utilization-scenarios-in-inner-mongolia-china-using-an-eco-efficiency-indicator
#6
Shuo Yang, Ling Lin, Shao Peng Li, Qiang Li, Xiu Teng Wang, Liang Sun
Utilization of fly ash is of great importance in China in the context of resource and environmental crises. Different fly ash utilization processes are proposed, and some have been practically applied. However, none of these fly ash utilization pathways has been evaluated comprehensively by integrating both environmental and economic perspectives. In this study, three high-aluminum fly ash utilization methods in Mongolia were assessed and compared based on the concept of eco-efficiency. The environmental assessment was conducted in accordance with life-cycle assessment principles, and a monetization-weighting approach was applied to obtain social willingness-to-pay as a reflection of environmental impact...
January 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28097117/cobalt-intoxication-heart-failure-after-revision-total-hip-replacement-for-ceramic-head-fracture-a-case-report
#7
Chul-Ho Kim, Young Hyun Choi, Mi Yeon Jeong, Jae Suk Chang, Pil Whan Yoon
In 1960s, toxic heart failure due to cobalt poisoning was firstly reported from Canadian industrial worker. Following development of bearing materials in hip arthroplasties, using cobalt-chrome alloy in bearing surface, there were rarely reported of systemic affect toxic cobaltism include toxic heart failure due to articulation wear in Western countries. It could be happened more easily by third body wear from ceramic particle especially revision total hip replacement (THR) surgery using cobalt-chrome alloy following ceramic articulation breakage which index surgery performed by ceramic on ceramic bearing...
December 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/28097115/granulomatous-lung-disease-a-novel-complication-following-metallosis-from-hip-arthroplasty
#8
Theodoros Balbouzis, Thomas Georgiadis, Peter Grigoris
A case of a female patient with local and systemic complications of metallosis, following catastrophic wear of a revised hip arthroplasty, is presented. The patient had a history of a fractured ceramic-on-ceramic implant, exchanged with a metal-on-polyethylene prosthesis. Systemic complications included sarcoidosis-like reactions, presenting as granulomatous lung disease, along with chorioretinitis, erythema nodosum, and cardiomyopathy. High local and circulating cobalt and chromium levels established the diagnosis...
December 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/28095435/evaluation-of-a-silver-embedded-ceramic-tablet-as-a-primary-and-secondary-point-of-use-water-purification-technology-in-limpopo-province-s-africa
#9
Beeta Ehdaie, Chloe T Rento, Veronica Son, Sydney S Turner, Amidou Samie, Rebecca A Dillingham, James A Smith
The World Health Organization (WHO) recognizes point-of-use water treatment (PoUWT) technologies as effective means to improve water quality. This paper investigates long-term performance and social acceptance of a novel PoUWT technology, a silver-infused ceramic tablet, in Limpopo Province, South Africa. When placed in a water storage container, the silver-embedded ceramic tablet releases silver ions into water, thereby disinfecting microbial pathogens and leaving the water safe for human consumption. As a result of its simplicity and efficiency, the silver-embedded ceramic tablet can serve as a stand-alone PoUWT method and as a secondary PoUWT to improve exisitng PoUWT methods, such as ceramic water filters...
2017: PloS One
https://www.readbyqxmd.com/read/28094246/development-of-sr-incorporated-biphasic-calcium-phosphate-bone-cement
#10
Hui Zhu, Dagang Guo, Wenli Qi, Kewei Xu
To follow the design strategy of traditional biphasic calcium phosphate (BCP) ceramic, in the present study, strontium-doped biphasic calcium phosphate bone cement (Sr-BCPC) composites comprising Sr-β-tricalcium phosphate (TCP)/Sr-hydroxyapatite (HAP) had been prepared for the first time using Sr x -β-TCP/tetracalcium phosphate (TTCP) as a cement powder and diluted phosphoric acid as a cement liquid. The phase composition, setting time, compressive strength, washout resistance, in vitro degradation rate, microstructure evolutions, hydration dynamics and cytotoxicity of Sr-BCPC at various Sr contents were intensively investigated...
January 17, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28091950/nanorods-on-surface-of-gan-based-thin-film-leds-deposited-by-post-annealing-after-photo-assisted-chemical-etching
#11
Lung-Chien Chen, Wun-Wei Lin, Te-Yu Liu
This study investigates the optoelectronic characteristics of gallium nitride (GaN)-based thin-film light-emitting diodes (TF-LEDs) that are formed by a two-step transfer process that involves wet etching and post-annealing. In the two-step transfer process, GaN LEDs were stripped from sapphire substrates by the laser lift-off (LLO) method using a KrF laser and then transferred onto ceramic substrates. Ga-K nanorods were formed on the surface of the GaN-based TF-LEDs following photo-assisted chemical etching and photo-enhanced post-annealing at 100 °C for 1 min...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28091875/the-effect-of-veneering-on-the-marginal-fit-of-cad-cam-generated-copy-milled-and-cast-metal-copings
#12
Sabit Melih Ates, Zeynep Yesil Duymus, Ipek Caglar, Bilal Hologlu
OBJECTIVE: This in vitro study investigated the marginal fit of metal and zirconia copings before and after veneering on dies with shoulder/chamfer (s/c) finish lines. MATERIALS AND METHODS: Using CAD/CAM, ten (n = 10) each s/c zirconia (NZ) copings and ten (n = 10) each s/c metal (MM) copings were generated. As controls, ten (n = 10) each s/c zirconia copings were copy-milled (ZZ) and ten (n = 10) each s/c metal copings were cast (CC). The vertical marginal discrepancy of the copings was measured at 20 predefined spots of the circular shoulder and chamfer finish lines in microns (μm) before and after a first and a second veneering firing using a stereomicroscope at ×40 magnification...
January 13, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28089529/material-characterization-of-the-mswi-bottom-ash-as-a-function-of-particle-size-effects-of-glass-recycling-over-time
#13
R Del Valle-Zermeño, J Gómez-Manrique, J Giro-Paloma, J Formosa, J M Chimenos
Differences during the last 15years in materials' composition in Municipal Solid Waste Incineration (MSWI) regarding bottom ash (BA) were assessed as a function of particle size (>16, 8-16, 4-8, 2-4, 1-2 and 0-1mm). After sieving, fractions >2mm were carefully washed in order to separate fine particles adhering to bigger particles. The characterization took into account five types of materials: glass (primary and secondary), ceramics (natural and synthetic), non-ferrous metals, ferrous metals and unburned organic matter...
January 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28089394/grinding-damage-assessment-for-cad-cam-restorative-materials
#14
Philippe Curran, Maria Cattani-Lorente, H W Anselm Wiskott, Stéphane Durual, Susanne S Scherrer
OBJECTIVES: To assess surface/subsurface damage after grinding with diamond discs on five CAD-CAM restorative materials and to estimate potential losses in strength based on crack size measurements of the generated damage. METHODS: The materials tested were: Lithium disilicate (LIT) glass-ceramic (e.max CAD), leucite glass-ceramic (LEU) (Empress CAD), feldspar ceramic (VM2) (Vita Mark II), feldspar ceramic-resin infiltrated (EN) (Enamic) and a composite reinforced with nano ceramics (LU) (Lava Ultimate)...
January 12, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28089332/lithium-silicate-endocrown-fabricated-with-a-cad-cam-system-a-functional-and-esthetic-protocol
#15
Leonardo Fernandes da Cunha, Carla Castiglia Gonzaga, Janes Francio Pissaia, Gisele Maria Correr
An endocrown restoration is an alternative approach to complete crowns with intraradicular cores or dowels for the restoration of endodontically treated teeth. Endocrowns conserve tooth structure and require fewer dental visits. This approach has been widely used, and various materials and techniques have been reported. Computer-aided design and computer-aided manufacturing (CAD-CAM) systems can generate and store libraries of teeth with various anatomies in their database, and diagnostic tooth waxing may not be required...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28089331/evaluation-of-marginal-and-internal-adaptation-of-hybrid-and-nanoceramic-systems-with-microcomputed-tomography-an-in%C3%A2-vitro-study
#16
Güler Yildirim, Ismail H Uzun, Ali Keles
STATEMENT OF PROBLEM: The accuracy of recently introduced chairside computer-aided design and computer-aided manufacturing (CAD-CAM) blocks is not well established, and marginal integrity and internal adaptation are not known. PURPOSE: The purpose of this in vitro study was to evaluate the marginal and internal adaptation of hybrid and nanoceramics using microcomputed tomography (μ-CT). MATERIAL AND METHODS: The marginal and internal adaptation of 3 polymer-infiltrated ceramic-network (PICN) materials (Vita Enamic [VE]; Lava Ultimate [LU]; Vita Suprinity [VS]) were compared with lithium disilicate (IPS e...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28088876/desolventizing-of-jatropha-curcas-oil-from-azeotropes-of-solvents-using-ceramic-membranes
#17
Naira Carniel, Giovani L Zabot, Marshall Paliga, Marcelo L Mignoni, Marcio A Mazzuti, Wagner L Priamo, J V Oliveira, Marco Di Luccio, Marcus V Tres
The separation of Jatropha curcas oil from azeotropes of ethyl alcohol/n-hexane and isopropyl alcohol/n-hexane using ceramic membranes with different cut-offs (5, 10 and 20 kDa) is presented. The mass ratios of oil:azeotropes (O:S) studied were 1:3 for feeding pressures of 0.1, 0.2 and 0.3 MPa, and 1:1 for feeding pressure of 0.1 MPa. Isopropyl alcohol was the best solvent for the membranes conditioning to permeate n-hexane (240 kg/m2.h). In the separation of Jatropha curcas oil and azeotropes of solvents, both membranes showed oil retention and total flux decreases with time...
January 15, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28088308/effect-of-various-polishing-systems-on-the-surface-roughness-and-phase-transformation-of-zirconia-and-the-durability-of-the-polishing-systems
#18
Chan Park, Mong-Sook Vang, Sang-Won Park, Hyun-Pil Lim
STATEMENT OF PROBLEM: Although many systems are used to polish zirconia, a comparison of the performance of zirconia and feldspathic porcelain polishing systems is lacking. PURPOSE: The purpose of this in vitro study was to compare the effects of 3 polishing systems on surface roughness, zirconia phase transformation, and durability of the polishing systems when applied to zirconia and feldspathic porcelain. MATERIAL AND METHODS: Three polishing systems were evaluated: Z1, a zirconia polishing system; Z2, a zirconia polishing system, and F1, a feldspathic porcelain polishing system...
January 11, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28088265/ceramic-inlays-onlays-and-overlays-have-a-high-survival-rate-and-a-low-rate-of-complications
#19
Romina Brignardello-Petersen
No abstract text is available yet for this article.
January 11, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28080999/electrochemical-depositing-rgo-ti-rgo-heterogeneous-substrates-with-higher-thermal-conductivity-and-heat-transfer-performance-compared-to-pure-ti
#20
Jing Wang, Huatao Wang, Wenying Zhang, Xinyi Yang, Guangwu Wen, Yijie Wang, Weiwei Zhou
Titanium (Ti) and its alloys are widely applied in many high strength, light weight applications, but their thermal conductivity is lower compared to that of other metals, which limits their further applications. In this paper, we demonstrated experimentally that rGO-Ti-rGO heterogeneous substrates with higher thermal conductivity, up to ∼38.8% higher than Ti, could be fabricated by electrochemical depositing rGO on their surface. The rGO layers are grown on the surface of Ti substrates, with appearance of bedclothes on the beds...
January 12, 2017: Nanotechnology
keyword
keyword
2675
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"