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Effect of nanoparticle(Pd, Pd/Pt, Ni) deposition on high temperature hydrogenation of Ti-V alloys in gaseous flow containing CO

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Progress in Natural science:Materials International 2017年第1期27卷 93-98页

作者： s.suwarno M.Williams J.K.solberg V.A.Yartys Department of Mechanical Engineering Institut Teknologi Sepuluh Nopember Department of Materials science and Engineering NTNU Institute for Energy Technology University of the Western Cape

The hydrogenation properties of Ti-V hydrides coated with nanoparticles have been studied in gaseous mixtures of argon and hydrogen with and without additions of 1% CO. Nanoparticles of Pd, Ni, and co-deposited Pd/Pt with particle sizes of;0–60 nm were formed by electroless deposition on the hydride surfaces. The alloy resistance to CO could be significantly improved by particle deposition. Large amounts of hydrogen were absorbed in a CO-containing gas when Ni and Pd/Pt deposition had been applied, while pure Pd deposition had no positive effect. Ni was found to have a stronger effect than those of Pd/Pt and Pd, possibly because of the size effect of Ni nanoparticles.

关键词： Metal hydride Titanium Vanadium Nanoparticle Palladium Nickel Platinum Carbon monoxide

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Genetic variation of Leptospira isolated from rats catched in Yogyakarta Indonesia

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Asian Pacific Journal of Tropical Medicine 2015年第9期8卷 698-701页

作者： Hadi sumanta Tri Wibawa suwarno Hadisusanto Anik Nuryati Hari Kusnanto Center for Environmental Health Engineering and Disease Control Department of Microbiology Faculty of Medicine Universitas Gadjah Mada Department of Biology Faculty of Biology Universitas Gadjah Mada Department of Health Analyst Yogyakarta Health Polytechnic Department of Public Health Faculty of Medicine Gadjah Mada University

Objective: To detect genetic variations among pathogenic Leptospira isolated from rats using 16 s r RNA gen as chronometer. Methods: This is an observational study with cross sectional design. Rats saples were taken in Yogyakarta special Region of Indonesia. Leptospira in the rats was detected by two methods ie. real time PCR(q PCR) by using primers correspond to16 s r RNA gene of Leptospira, and standard PCR by using dif erent set of primer correspond to the 16 s r RNA gene of Leptospira. The standard PCR amplicon then subjected for DNA sequencing. Analysis genetic variation was performed using MEGA 6.2. software. Results:There were 99 DNA samples from rats included in this study. Detection of Leptospira by using q PCR revealed 25 samples positive for pathogenic Leptospira, while only 6 samples were able to be detected using standard PCR. The new primer set correspond to 16 s r RNA gene was able to detect specii cally pathogenic Leptospira in the rats. sequencing analysis of 6 PCR amplicons showed that the Leptospira which infect the rats catched in Yogyakarta genetically close related with pathogenic Leptospira which were isolated from human, animal, rodents, and environment. Conclusions: It can be considered that rats are the most important vector and reservoir of Leptospira.

关键词： Pathogenic Leptospira 16s rRNA Rats Genetic variation

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