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Journal ArticleDOI
Akio Ikesue, Yan Lin Aung 
01 Dec 2008-Nature Photonics
715 Citations
Recently, scientists have shown that by eliminating the defects, a new, refined ceramic material — polycrystalline ceramic — can be produced.
The ceramic motorized spindle model provides a theoretical basis for the development of ceramic spindle energy loss and efficiency.
For this reason, the low corrosion level in a ceramic-on-ceramic coupling could be advantageous.
Journal ArticleDOI
Sung Kwan Hwang, Oh, Her Ms, Shim Yj, Cho Ty, Kwon Sm 
01 Aug 2008-Orthopedics
30 Citations
We believe the mechanism of the fracture-dissociation of the ceramic liner in this case is similar to a case of separation of the ceramic liner from the polyethylene shell in a sandwich-type ceramic-ceramic joint.
The study shows a novel and promising approach to fabricate complex ceramic matrix and ceramic components via indirect SLS and CIP process.
Ceramic-on-ceramic uncemented THA is therefore a useful adjunct for the treatment of advanced osteonecrosis of the femoral head.

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In 2014, South Africa reported a total of 236 rockfall incidents per 1000 person years, with falls-of-ground remaining a significant cause of fatalities in mines despite overall safety improvements. Rockfalls in narrow tabular mining geometries, common in South African gold and platinum operations, have been identified as a major cause of mining accidents, resulting in financial losses and reduced productivity. The consequences of rockfalls, including fatalities and injuries, have prompted research into quantifying the associated risks and losses, leading to the development of methodologies to evaluate the cost implications of rockfall incidents. The need for effective management and prevention strategies for rockfalls in South African mines remains crucial to enhance safety and reduce fatalities.
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Students' liking towards English writing can be attributed to various factors identified in the research papers. Factors influencing students' motivation in English writing include institutional demands, linguistic needs, enthusiastic teachers, engaging activities, interesting topics, and a positive learning atmosphere. Additionally, attitudes towards writing in English are influenced by factors such as interest, motivation, writing anxiety, literacy skills, and the impact of the native language. Moreover, motivational factors affecting students in writing essays encompass teacher's performance, peers' performance, parent's involvement, and classroom ambience. Furthermore, students' motivation to write is influenced by their habitus, identity, social supports, perception of autonomy, and the exploration of complex emotions encountered in the social world. Motivation, along with vocabulary mastery, significantly impacts students' English narrative writing skills.
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4 answers
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