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Micro/nanotopographical modifications on titanium surfaces constitute a new process to increase osteoblast response to enhance bone formation. In this study, we utilized alkali heat treatment at high (SB-AH1) and low temperatures (SB-AH2) to nano-modify sandblasted titanium with microtopographical surfaces. Then, we evaluated the surface properties,… (More)
An extensive investigation of the petroleum ether extract of TRIPTERYGIUM WILFORDII plants have revealed the presence of four new compounds, triptonoterpene, neotriptonoterpene, triptonodiol, and neotriptonolide, in addition to the diterpenes isolated and characterized earlier. The structures of these novel natural products have been elucidated.
Triptophenolide, C20H24O3, has been assigned two isomeric structures. DF Yu et al reported the X-ray analytical structure II in 1990. In 1982, however, FX Deng et al had already reported the spectrometric assignment of structure I. Now, we report again the single crystal analysis of triptophenolide (I). The crystal belongs to space group P2(1)2(1)2(1) of… (More)
InSbN alloys are the new narrow bandgap semiconductors capable of broadband and long wavelength infrared photodetection. This paper reports the annealing conditions on the properties and quality of InSbN alloys, fabricated by multi-step ion implantation. The InSbN samples were annealed at different annealing methods, temperatures, and periods of time. They… (More)
Three advanced direct contact via processes with Ta/TaN/Ta tri-layer barrier and the electromigration of their structures were comparatively investigated. The process of Ar<sup>+</sup> resputtering with median removal of tri-layer barrier shows the lowest defective die percentage. It also shows the highest activation energy and longest downstream… (More)
A new anthraquinone compound was isolated from the stem and leaves of Thipterygium wilfordii. The structure was elucidated to be 1,8-dihydroxy-4-hydroxymethylanthraquinone on the basis of UV-VIS,IR,HNMR and MS analysis.