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Phase Transition in C4H12NI·I2
H. Ishigami,M. Shiro,M. Sumita,S. Sato,T. Hori,Y. Tsunashima 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.IV
The title compound C4H12NII2 was prepared addition of iodine to a tetramethylammonium iodide. The crystal showed anomalies at 218 K, 238 K and 308 K on dierential scanning calorimetry (DSC) measurement, whereas the crystal of tetramethylammonium iodide showed no anomaly. Crystal was grown by slow evaporation from an ethanol solution at 298 K. The crystal structure of orthorhombic C4H12NII2 of room temperature determined by use of a Imaging Plate diractometer is space group Pnnm, a = 14.115(1) A, b = 10.0997(7) A, c = 8.3019(5) A, V = 1183.5(3) A3, Z = 4. The present work reports the details of the crystal structure and phase transition of C4H12NII2.
( Ken Fukunaga ),( Kazuko Nagase ),( Takeshi Kusaka ),( Nobuyuki Hida ),( Yoshio Ohda ),( Koji Yoshida ),( Katsuyuki Tozawa ),( Koji Kamikozuru ),( M Iimuro ),( Shiro Nakamura ),( Hiroto Miwa ),( Taka 대한소화기기능성질환·운동학회 2009 Gut and Liver Vol.3 No.1
Background/Aims: Cytapheresis (CAP) is a novel strategy for ulcerative colitis (UC). However, there is insufficient data on the long-term outcome of UC patients who achieve remission by CAP. This study involved patients with severe UC who refracted to intravenous (iv) corticosteroid. Methods: Forty-seven UC patients who had received CAP therapy for the first time within 1 year after UC diagnosis were followed for 36 months. One of the inclusion criteria was a clinical activity index (CAI) of ≥7 points at the end of a 2-week iv course of corticosteroid therapy. CAP therapy consisted of ten sessions over 10 weeks. Results: CAP induced clinical remission (CAI≤4) in 70.2% patients (33/47). The number of submissions for colectomy was higher for severe UC at entry (CAI≥12, n=25) than for moderately severe UC at entry (7≤CAI<12, p=15; p<0.02). The cumulative rates of avoiding surgery and relapse were 54.5% and 24.2%, respectively, at 36 months in patients who responded to CAP therapy. This was similar to that of iv cyclosporine reported recently. Conclusions: This study suggest that CAP is an effective therapy in patients who are refractory to conventional medications including iv corticosteroid. Increased remission rates should be expected in refractory patients with moderately severe UC. (Gut and Liver 2009;3:41-47)
비정질 Se 광도전 타겟을 이용한 고감도 HARP 촬상관의 제작 및 특성
박욱동,김기완,Kubota, M.,Suzuki, S.,Katoh, T.,Tanioka, K. 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1
A high sensitivity HARP(High-gain Avalanche Rushing amorphous Photoconductor) image pickup tube using 4 μm thick amorphous Se photoconductive target was fabricated and its characteristics were investigated. When the target voltage was increased more than 360 V, the signal current increases rapidly and the dark current of the target was suppressed at 3.2 nA up to the voltage of 490 V. And the peak spectral response of the target was obtained at the wavelength of 460 nm. Also the amplitude response of the HARP tube was 7.5% at 800 TV lines, and the decay lag was 3.4%.