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ALUMINA POWDER PREPARED BY THE HYDROLYSIS OF AL-PROPOXIDE IN THE SUPERCRITICAL FLUID OF PROPANOL
Nakagawa, Nakagawa, Z.,Enomoto, Enomoto, N.,Nomura, Nomura, S.,Kim, Kim, D.W.,Lim, Lim, D.Y. 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.2 No.4
Al-isopropoxide dispersed into isopropanol was heated in an autoclave above the critical point of propanol(23$5^{\circ}C$, 4.7MPa). Propanol coexisting Al-isopropoxide produced some water during the condensation reaction to isopropul ether, while only propanol did not change under that conditions. This water hydrolyzed Al-isopropoxide to form an alumina at 30$5^{\circ}C$ and 11.0MPa. This alumina had a similar X-ray diffraction pattern of $\chi$-alumina. The heating treatment showed the aluminal transformed directly to ${\alpha}$-alumina around 110$0^{\circ}C$, not to pass via any other intermediate aluminas. The aluminal was named pseudo $\chi$-alumina as a new phase. As-prepared alumina was fine powder of about 20nm, and had about 5% weight loss in the temperature range from 30$0^{\circ}C$ to 65$0^{\circ}C$, and the IR spectral showed no constitutional water.
Targeting the HTLV-I-Regulated BATF3/IRF4 Transcriptional Network in Adult T Cell Leukemia/Lymphoma
Nakagawa, Masao,Shaffer, Arthur L.,Ceribelli, Michele,Zhang, Meili,Wright, George,Huang, Da Wei,Xiao, Wenming,Powell, John,Petrus, Michael N.,Yang, Yibin,Phelan, James D.,Kohlhammer, Holger,Dubois, Si Elsevier Science B.V., Amsterdam 2018 CANCER CELL Vol.34 No.2
Covariance Evaluation for Actinide Nuclear Data in JENDL-4
O. Iwamoto,T. Nakagawa,S. Chiba,N. Otuka 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Covariances of actinide nuclear data stored in JENDL-4.0 have been evaluated based on available experimental data and reaction model calculation. The covariance matrix was basically deduced applying the consistent method with the nuclear data evaluation. For the fast neutron fission cross sections of 6 major actinides of ^(233,235,238)U and ^(239, 240, 241)Pu were evaluated simultaneously with experimental data of both cross sections and their ratios using the least-squares code SOK, resulting in giving the covariance matrices that has correlations between the data of different nuclei. For the minor actinide, the least-squares fitting code GMA was used for fission cross section evaluation. The covariances were obtained from the same calculation. For other reaction cross sections, covariances were evaluated using KALMAN code with the sensitivities calculated by CCONE code. Covariances for other data such as resonance parameters and average numbers of fission neutrons were also evaluated. The evaluated covariance data have been complied to the ENDF-6 format files. The JENDL-4.0 library contains covariance data of (1) average number of neutrons per fission (MF = 31), (2) resonance parameters (MF = 32), (3) cross sections (MF = 33), (4) angular distributions of elastic scattering (MF = 34), and (5) prompt fission spectra (MF = 35) for all 79 actinides.
OVERVIEW OF NORTH ECLIPTIC POLE DEEP MULTI-WAVELENGTH SURVEY (NEP-DEEP)
H. Matsuhara,T. Wada,N. Oi,T. Takagi,T. Nakagawa,K. Murata,T. Goto,S. Oyabu,T.T. Takeuchi,K. Ma lek,A. Solarz,Y. Ohyama,T. Miyaji,M. Krumpe,H. M. Lee,임명신,S. Serjeant,C. P. Pearson,G. J. White,M. A. Ma 한국천문학회 2017 天文學論叢 Vol.32 No.1
The recent updates of the North Ecliptic Pole deep (0.5~deg$^2$, NEP-Deep)multi-wavelength survey covering from X-ray to radio-wave is presented. The NEP-Deep provides us with several thousands of 15~$\mu$m or 18~$\mu$mselected galaxies, which is the largest sample ever made at thesewavelengths. A continuous filter coverage in the mid-infrared wavelength(7, 9, 11, 15, 18, and 24~$\mu$m) is unique and vital to diagnose thecontributions from starbursts and AGNs in the galaxies out to $z$=2. The new goal of the project is to resolve the nature of the cosmic star formationhistory at the violent epoch (e.g. $z$=1--2), and to find a clue to understandits decline from $z$=1 to presentuniverse by utilizing the unique power of the multiwavelength survey. The progressin this context is briefly mentioned.
MOLECULAR DYNAMICS(MD) SIMULATION ON PRESSURE AND TEMPERATURE BEHAVIORS OF RUTILE
Kim, D.W.,Kawamura, K.,Enomoto, N.,Nakagawa, Z. 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.2 No.e3
The pressure and temoerature dependences of the crystal structure and the physical properties of rutile have been calculated by means of MD simulations with a quantum correction. Interatomic potential functions of our model are composed of Coulomb, short range repulsion, van der Waals, and Morse interactions. The energy parameters were empirically determined to reproduce the fundamental properties of rutile. The MD results were compared with experimental data inthe literature and well reproduced the observed with experimental data in the literature and well reproduced the observed crystal structure and some physical properties including volume thermal expansivity and compressibility by using the present interatomic potential model.