Basic ammonothermal growth of Gallium Nitride – State of the art, challenges, perspectives
Publication date: Available online 2 June 2018 Source:Progress in Crystal Growth and Characterization of Materials Author(s): M. Zajac, R. Kucharski, K. Grabianska, A. Gwardys-Bak, A. Puchalski, D. Wasik, E. Litwin-Staszewska, R. Piotrzkowski, J. Z Domagala, M. Bockowski Recent progress in ammonothermal technology of bulk GaN growth in basic environment is presented and discussed in this paper. This method enables growth of two-inch in diameter crystals of outstanding structural properties, with radius of curvature above tens of meters and low threading dislocation density of the order of 5 × 104 cm−2. Crystals with different types of conductivity, n-type with free electron concentration up to 1019 cm−3, p-type with free hole concentration of 1016 cm−3, and semi-insulating with resistivity exceeding 1011 Ω cm, can be obtained. Ammonothermal GaN of various electrical properties is described in terms of point defects present in the material. Potential applications of high-quality GaN substrates are also briefly shown.
This report continues the development of ALIs as a clinical tool in wildlife while systematically testing one possible method for determining an optimal ALI for a particular species. PMID: 32228119 [PubMed - as supplied by publisher]
Authors: Park J, Kim J, Chen Y, Song HC, Chen Y, Zheng M, Surh YJ, Kim UH, Park JW, Joe Y, Chung HT Abstract Oxidative stress is recognised as a key factor that can lead to cellular senescence and aging. Carbon monoxide (CO) is produced by haemoxygenase-1 (HO-1), which exerts cytoprotective effects in aging-related diseases, whereas the effect of CO on cellular senescence and aging has not been elucidated. In the current study, we clearly demonstrated that CO delays the process of cellular senescence and aging through regulation of miR-34a and Sirt1 expression. CO reduced H2O2-induced premature senescence in human ...
Publication date: Available online 1 April 2020Source: Journal of Microbiological MethodsAuthor(s): Wisnu Tafroji, Felicia Monica Bernadette, Ernawati A. Giri Rachman, Dodi Safari
Publication date: Available online 2 April 2020Source: Journal of Microbiology, Immunology and InfectionAuthor(s): Chun-Min Kang, Xiang-Jun Chen, Ching-Chin Chih, Chen-Ching Hsu, Ping-Hung Chen, Tai fen Lee, Lee-Jene Teng, Po-Ren Hsueh
Publication date: Available online 1 April 2020Source: Journal of Microbiology, Immunology and InfectionAuthor(s): Chien-Yu Lee, Pi-Sheng Wang, Yuan-Der Huang, Yung-Ching Lin, Yung-Nien Hsu, Shih-Chung Chen
Publication date: Available online 1 April 2020Source: Journal of Microbiology, Immunology and InfectionAuthor(s): Chia-Hung Liao, Shih-Chang Hung, Yuan-Ti Lee, Hung-Chang Hung, Po-Ren Hsueh
Publication date: Available online 2 April 2020Source: Statistics &Probability LettersAuthor(s): Junhao Guo, Jie Zhou, Sanfeng Hu
Publication date: Available online 1 April 2020Source: Statistics &Probability LettersAuthor(s): S. Mousavinasr, C.R. Gonçalves, C.C.Y. Dorea
Publication date: 1 May 2020Source: Sensors and Actuators A: Physical, Volume 306Author(s): Chuang Ge, Leixiang Bian, Jiayang Li, Mingyou Zhong, Songtong Han, Yunfei Jia
Publication date: Available online 1 April 2020Source: Results in PhysicsAuthor(s): U.S. Okorie, A.N. Ikot, E.O. Chukwuocha, G.J. Rampho