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Magnetization Curves of TbZn2 in High Magnetic Fields
Yoshiya Adachi,Tetsuo Kitai,Keiichi Koyama,Hajime Yoshida,Takejiro Kaneko 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The magnetization of a single-crystalline sample of TbZn2 was measured under high magneticfields up to 180 kOe in the temperature range from 4.2 to 90 K. The metamagnetic transitionswere observed in the directions of all axes at temperatures below TN and along the c-axis attemperatures above TN. The metamagnetic transition field HM along the c-axis at temperaturesabove TN increases with increasing temperature.
Pressure Effect on the Phase Transition Temperatures of Ni2Mn1−xCuxGa
Tomoya Miura,Yoshiya Adachi,Keita Endo,Ryosuke Kainuma,Takeshi Kanomata 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The martensitic transition temperature TM and the Curie temperature TC of the ferromagneticalloys Ni2Mn1−xCuxGa (0 ≤ x ≤ 0.40) were measured under pressure. We estimated the pressurederivatives dTM/dp and dTC/dp from the results. The values of dTM/dp and dTC/dp for Ni2MnGa(x = 0) were -4.5 K/GPa and +3.9 K/GPa, respectively. The values of dTM/dp increased fromnegative to positive with increasing x in Ni2Mn1−xCuxGa. The values of dTC/dp approached zerowith increasing x.
( Masahito Aimi ),( Kenji Furuta ),( Yoshiya Morito ),( Kousuke Fukazawa ),( Kyoichi Adachi ),( Yoshikazu Kinoshita ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2013 Journal of Neurogastroenterology and Motility (JNM Vol.19 No.1
Background/Aims Esophagogastric junctional lesions, such as mucosal breaks with Los Angeles grade A or B reflux esophagitis, lacerations in Mallory Weiss syndrome, and short segment Barrett`s esophagus, are mainly found in the right anterior wall of the distal esophagus. Asymmetrical lower esophageal sphincter pressure and resting radial asymmetrical acid reflux may be causes of this asymmetrical distribution of reflux esophagitis and short segment Barrett`s esophagus. We developed a novel pH and pressure catheter to investigate the asymmetrical distributions of pH and intra-esophageal pressure in the distal esophagus. Methods One healthy male volunteer was enrolled in this study. Acid reflux and motor function in distal esophagus was investigated using simultaneous measurements of intra-esophageal pH and pressure in 8 directions with novel sensor catheter. Results Thirty-six acid and weak acid reflux events were observed, of which 22 were circumferential refluxes with pH drops in all channels and 14 were partial refluxes with pH drops in some channels. Increase in transient circumferential intraesophageal pressure was observed just after 72.7% of the circumferential reflux and 42.9% of the partial reflux events. Conclusions Using a novel sensor catheter, 2 different types of acid reflux events were identified in the present study. (J Neurogastroenterol Motil 2013; 19:42-46).