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Norris-Landzberg acceleration model, only applying the conditions of the temperature cycling tests such as temperature range, maximum of temperature and cycle times, has been widely using to predict the lifetimes of electronic packages since 1969, due to its simplicity not considering complex damage information such as stress-strain relationships. During the last few years, a number of researches...
The purpose of this study was to develop a new biodegradable bone substitute materials consisting of synthesized hydroxyapatite (HAp) and Type I biodegradable honeycomb collagen sponge (HCS) composites. Apatite-coated Honeycomb collagen composite scaffolds (HAp-HCS) was fabricated and the proliferation and differentiation of MC 3T3-E1 cells were examined for the assessment of their biocompatibility...
Aiming at the current problems existing in management system of our country's construction project--- incomplete idea, inexplicit system and unsystematic management content, considering the two factors, the exterior part of management system of the construction project (participants such as the government, the technical and management service promoters) and the inner part of management system (investment...
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