نتایج جستجو برای: ceramic technology
تعداد نتایج: 489625 فیلتر نتایج به سال:
Microprocessor packaging in modern workstations and servers often consists of one or more large flip chip die that are mounted to a high performance ceramic chip carrier. The final assembly configuration features a complex stack up of area array solder interconnects, underfill, ceramic substrate, lid, heat sink, thermal interface materials, second level solder joints, organic PCB, etc., so that...
A resource-saving technology of porous ceramic materials using low-quality non-sintering sandy loam as a basic raw material has been developed. Based on the analysis plastic properties two- and three-component masses, including loam, expanded clay fuel slag in various ratios, it was found that required level their plasticity provides content main following range (wt%): – 15 20; 50 65; 20 30. By...
Lightweight, porous ceramic structures are being developed for a variety of biologically-related applications. In bioengineering, there is interest in replacing metal-based implants with more functional implants consisting of porous bioceramics that are bioresorbable. In the design of bioinspired ceramic structures, there is a desire to understand the coupling between geometric complexity and p...
Revision rates of total hip arthroplasty have decreased after introducing total hip arthroplasty (THA) using ceramic component, since ceramic components could reduce components wear and osteolysis. The fracture of a ceramic component is a rare but potentially serious event. Thus, ceramic on polyethylene articulation is gradually spotlighted to reduce ceramic component fracture. There are a few ...
Background: Metal ceramic restorations are highly popular and are used for most of the crown and bridge restorations made today. Aims: To evaluate the translucency and fracture strength of two all-ceramic and traditional metal ceramic crowns. Materials and Methods: Thirty crowns of similar size and shape were constructed to fit a standard brass die. Ten crowns were manufactured from each of the...
To systematically review the randomized controlled trials (RCTs) and compare the survival rates and complications of all-ceramic fixed dental prostheses (FDPs) with those of metal-ceramic FDPs. Eligible studies were retrieved in relevant electronic databases from their inception to June 8th, 2016. Then, quality of the included studies was assessed using Cochrane Collaboration’s tool. Heterogene...
OBJECTIVES Our study aimed to examine not only the incidence but also the impact of noise from two types of total hip replacement articulations: ceramic-on-ceramic and ceramic-on-polyethylene. METHODS We performed a case-controlled study comparing subjective and objective questionnaire scores of patients receiving a ceramic-on-ceramic or a ceramic-on-polyethylene total hip replacement by a si...
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