High-energy Magnetic Excitations in Underdoped La1.90Sr0.10CuO4

Kentaro Sato,Masato Matsuura,Masaki Fujita,Ryoichi Kajimoto,Sungdae Ji,Kazuhiko Ikeuchi,Mitsutaka Nakamura,Yasuhiro Inamura,Masatoshi Arai,Masanori Enoki,Kazuyoshi Yamada 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12

We measured the magnetic excitations in underdoped (UD) La1.90Sr0.10CuO4 by using inelasticneutron scattering over a wide energy range. We succeeded in observing the high-energy excitationsup to '160 meV. Hour-glass-like magnetic excitation, which is commonly seen in the superconductingphase of cuprate oxides, was confirmed. The Ecross (the energy where the dispersion is closestto the ( 12 , 12 ) reciprocal position) of 40 meV follows a linear relation between Ecross and the dopedhole concentration in the UD region. From the dispersion of high-energy excitations above Ecross,we successfully found an effective nearest neighbor interaction (Jeff ) of 102 ± 2 meV. This Jeff issmaller than the nearest neighbor interaction J(=132 meV) in the parent compound La2CuO4,indicating a reduction of Jeff by hole-doping.

DT Neutronics Benchmark Experiment on Lead at JAEA-FNS

Kentaro Ochiai,Keitaro Kondo,Seiki Ohnishi,Kosuke Takakura,Satoshi Sato,Yuichi Abe,Chikara Konno,Chihiro Suzuki,Takahiro Yagi 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23

Lead is one of the most important candidate materials for nuclear fusion reactor blankets. We have carried out an integral benchmark experiment on lead at the DT neutron source facility of JAEA, FNS. A cubic lead assembly on a side of 45.3 cm was set up and was irradiated with the DT neutron source. Reaction rates of the ^(27)Al(n,α)^(24)Na, ^(93)Nb(n,2n)^(92m)Nb, ^(90)Zr(n,2n)^(89)Zr, and ^(115)In(n,n')^(115m)In reactions and neutron spectra above 2 MeV were measured inside the assembly with activation foil and a small NE213 spectrometer, respectively. A Monte Carlo code, MCNP5, was adopted to calculate the reaction rates and neutron spectra. The latest nuclear data libraries, JENDL-3.3 ENDF/B-VII.0, JEFF-3.1 and FENDL-2.1, were used in the calculation. The calculation results with the three libraries except for JENDL-3.3 agreed with the measured reaction rates and neutron spectra. On the other hand, that with JENDL-3.3 underestimated the measured ones with the depth. We found out that the inappropriate evaluation of the (n,2n), elastic scattering and inelastic scattering reactions in the lead isotopes of JENDL-3.3 caused the disagreements.

Evaluation of flick-motion based representation used for presenting Japanese kana characters by tactile information display device

Kentaro Kotani,Hiroki Sato,Satoshi Suzuki,Takafumi Asao 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5

This study introduces a potential technique for Japanese kana characters on tactile information display device (tactile display) that allows the user effectively perceived. Currently tactile display has not been developed for the purpose of character information transmission due to poor performance of recognition rates in terms of characters. The purpose of this study is to evaluate a novel technique, flick motion based display, for presenting Japanese kana characters on the tactile display (FMR tactile display). Flick motion is normally used as an input scheme for mobile devices, as one of touch screen gestures. In Japan, a set of flick motions on 10 isolated areas on the touch screen is especially assigned as Japanese kana character entry. Many Japanese mobile phone users have its mental model, which was applied to present character information as an output scheme into tactile display. Experiments were conducted to evaluate how the implemented presentation system can perform well to let the user perceive kana characters. A total of 10 subjects, including users unfamiliar to FMR, participated in the study. The subjects located their right hand on the tactile display and a kana character by using FMR was given on the display. They responded the characters as soon as they perceived. Number of correct recognition of the characters were obtained throughout the set of trials consisted of 20 character presentations. The results showed that the average correct recognition rates were 41.5 percent and the average reaction time was 6.8 seconds, which were faster than conventional trace-based character representations. The results suggested that fine adjustment of the palm to the tactile display and changing stimulus duration would improve the performance of recognition rates.

Evaluation of Flick-motion based Representation used for Presenting Japanese Kana Characters by Tactile Information Display Device

( Kentaro Kotani ),( Hiroki Sato ),( Satoshi Suzuki ),( Takafumi Asao ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-

This study introduces a potential technique for Japanese kana characters on tactile information display device (tactile display) that allows the user effectively perceived. Currently tactile display has not been developed for the purpose of character information transmission due to poor performance of recognition rates in terms of characters. The purpose of this study is to evaluate a novel technique, flick motion based display, for presenting Japanese kana characters on the tactile display (FMR tactile display). Flick motion is normally used as an input scheme for mobile devices, as one of touch screen gestures. In Japan, a set of flick motions on 10 isolated areason the touch screen is especially assigned as Japanese kana character entry. Many Japanese mobile phone users have its mental model, which was applied to present character information as an output scheme into tactile display. Experiments were conducted to evaluate how the implemented presentation system can perform well to let the user perceive kana characters. A total of 10 subjects, including users unfamiliar to FMR, participated in the study. The subjects located their right hand on the tactile display and a kana character by using FMR was given on the display. They responded the characters as soon as they perceived.

Effects of teriparatide on bone in autochthonous transgenic model mice for diabetes mellitus (Akita mice)

Kentaro Ohuchi,Naohisa Miyakoshi,Yuji Kasukawa,Toyohito Segawa,Hayato Kinoshita,Chie Sato,Masashi Fujii,Yoichi Shimada 대한골다공증학회 2019 Osteoporosis and Sarcopenia Vol.5 No.4

Objectives: The purpose of this study is to evaluate the effects of teriparatide (TPTD) on bone mineral density (BMD), bone strength, and bone quality in Akita mouse models of diabetes mellitus. Methods: Twelve-week-old female Akita mice and control mice (C57/BL/6NCrSlc) were divided into 4 groups: control mice treated with vehicle (n ¼ 7) or TPTD (n ¼ 6); and Akita mice treated with vehicle (n ¼ 6) or TPTD (n ¼ 7). TPTD or vehicle was administered subcutaneously 3 times a week for 8 weeks. Blood glucose, serum sclerostin, total tibial BMD, femoral shaft bone strength, and bone quality using Fourier-transform infrared spectroscopy imaging were evaluated. Results: No significant differences in serum sclerostin levels were evident among these groups after 8 weeks of treatment. TPTD significantly increased BMD in control mice (þ12.7%, P ¼ 0.02) and Akita mice (þ29.2%, P ¼ 0.001) compared with vehicle. Maximum load and stiffness were significantly higher in Akita mice treated with TPTD than in Akita mice treated with vehicle (þ56.6%, P ¼ 0.03 and þ 90.5%, P ¼ 0.02, respectively). On Fourier-transform infrared spectroscopy imaging, the mineral/matrix ratio was significantly lower in Akita mice treated with vehicle than in control mice (12.2%, P ¼ 0.02), and TPTD treatment significantly increased the mineral/matrix ratio (P ¼ 0.003). Conclusions: TPTD thus improved BMD and bone strength in both control mice and Akita mice, with improvements in the mineral/matrix ratio among Akita mice.

FLATS Architecture and its Evaluation

Masayuki Suzuki,Kei Hiraki,Kentaro Shimizu,Mitsuhisa Sato 대한전자공학회 1997 TENCON 87 - Computers and Communications Technolog Vol.- No.-

Deposition of Aerosols on Leaves in a Cool-temperate Larch Forest in Northern Hokkaido, Japan

Fukazawa Tatsuya,Murao Naoto,Sato Hisashi,Takahashi Masahiro,Akiyama Masayuki,Yamaguchi Takashi,Noguchi Izumi,Takahashi Hiroyuki,Kozuka Chikara,Sakai Rei,Takagi Kentaro,Fujinuma Yasumi,Saigusa Nobuko 한국대기환경학회 2012 Asian Journal of Atmospheric Environment (AJAE) Vol.6 No.4

Aerosol concentrations at the CC-Lag site in the Teshio Experimental Forest increased from winter to spring and sometimes showed extremely high values associated with Kosa and/or forest-fire events. The range and mean of the mass concentrations of aerosol chemical species were as follows: total particulate mass, 1.2-29, 5.0; elemental carbon, 0.061-2.2, 0.43; organic carbon, 0.059-3.5, 0.79; and sulfate,0.12-6.2, 1.8 μg/m3. The total masses of the deposited particles on hybrid larch and on bamboo leaves were approximately 35 and 30 μg/cm2, respectively. The amounts of soil particles on the leaves were 6 μg/cm2 for the upper part of hybrid larch, 2μg/cm2 for the lower part of hybrid larch, and 1 μg/cm2 for Sasa bamboo leaves. The amounts of deposited black carbon were 2.3 μg/cm2 for the upper part of hybrid larch, 0.6 μg/cm2 for the lower part of hybrid larch, and 0.2 μg/cm2 for Sasa bamboo leaves. Half of the total deposited particular mass was attached on the hybrid larch; however, most of the total deposited mass was adhered on the Sasa bamboo leaves. Regardless of the species, there tend to be more deposited particles on the leaves in the upper part than in the lower part, with only a few meters height difference. Comparing the composition of the deposited particles to that of the atmospheric aerosols without any size cut, the fractions of water-soluble material sulfate and sea salt in the deposited aerosols were about one tenth and one hundredth lower than that in the aerosols, respectively. On the basis of the measured concentration and the deposited amount on leaves, the deposition velocity of black carbon was estimated to be approximately 0.5 cm/s. Aerosol concentrations at the CC-Lag site in the Teshio Experimental Forest increased from winter to spring and sometimes showed extremely high values associated with Kosa and/or forest-fire events. The range and mean of the mass concentrations of aerosol chemical species were as follows: total particulate mass, 1.2-29, 5.0; elemental carbon, 0.061-2.2, 0.43; organic carbon, 0.059-3.5, 0.79; and sulfate,0.12-6.2, 1.8 μg/m3. The total masses of the deposited particles on hybrid larch and on bamboo leaves were approximately 35 and 30 μg/cm2, respectively. The amounts of soil particles on the leaves were 6 μg/cm2 for the upper part of hybrid larch, 2μg/cm2 for the lower part of hybrid larch, and 1 μg/cm2 for Sasa bamboo leaves. The amounts of deposited black carbon were 2.3 μg/cm2 for the upper part of hybrid larch, 0.6 μg/cm2 for the lower part of hybrid larch, and 0.2 μg/cm2 for Sasa bamboo leaves. Half of the total deposited particular mass was attached on the hybrid larch; however, most of the total deposited mass was adhered on the Sasa bamboo leaves. Regardless of the species, there tend to be more deposited particles on the leaves in the upper part than in the lower part, with only a few meters height difference. Comparing the composition of the deposited particles to that of the atmospheric aerosols without any size cut, the fractions of water-soluble material sulfate and sea salt in the deposited aerosols were about one tenth and one hundredth lower than that in the aerosols, respectively. On the basis of the measured concentration and the deposited amount on leaves, the deposition velocity of black carbon was estimated to be approximately 0.5 cm/s.

Verification of Autophagy in Porcine Oocytes by LC3 Detection

Seung-Hoon Lee,Yuuki Hiradate,Yumi Hoshino,Kentaro Tanemura,Eimei Sato,Hyun-Jong Kim,Sun-Ho Choi,Soo-Jin Sa,Kyu-Ho Cho,Jun-Ki Hong,Du-Wan Kim,Yong-Min Kim 한국동물생명공학회(구 한국동물번식학회) 2014 한국동물번식학회 한중일 심포지엄 Vol.2014 No.1

Deposition of Aerosols on Leaves in a Cool-temperate Larch Forest in Northern Hokkaido, Japan

Tatsuya, Fukazawa,Naoto, Murao,Hisashi, Sato,Masahiro, Takahashi,Masayuki, Akiyama,Takashi, Yamaguchi,Izumi, Noguchi,Hiroyuki, Takahashi,Chikara, Kozuka,Rei, Sakai,Kentaro, Takagi,Yasumi, Fujinuma,Nob Korean Society for Atmospheric Environment 2012 Asian Journal of Atmospheric Environment (AJAE) Vol.6 No.4

Aerosol concentrations at the CC-Lag site in the Teshio Experimental Forest increased from winter to spring and sometimes showed extremely high values associated with Kosa and/or forest-fire events. The range and mean of the mass concentrations of aerosol chemical species were as follows: total particulate mass, 1.2-29, 5.0; elemental carbon, 0.061-2.2, 0.43; organic carbon, 0.059-3.5, 0.79; and sulfate, 0.12-6.2, 1.8 ${\mu}g/m^3$. The total masses of the deposited particles on hybrid larch and on bamboo leaves were approximately 35 and 30 ${\mu}g/cm^2$, respectively. The amounts of soil particles on the leaves were 6 ${\mu}g/cm^2$ for the upper part of hybrid larch, 2 ${\mu}g/cm^2$ for the lower part of hybrid larch, and 1 ${\mu}g/cm^2$ for Sasa bamboo leaves. The amounts of deposited black carbon were 2.3 ${\mu}g/cm^2$ for the upper part of hybrid larch, 0.6 ${\mu}g/cm^2$ for the lower part of hybrid larch, and 0.2 ${\mu}g/cm^2$ for Sasa bamboo leaves. Half of the total deposited particular mass was attached on the hybrid larch; however, most of the total deposited mass was adhered on the Sasa bamboo leaves. Regardless of the species, there tend to be more deposited particles on the leaves in the upper part than in the lower part, with only a few meters height difference. Comparing the composition of the deposited particles to that of the atmospheric aerosols without any size cut, the fractions of water-soluble material sulfate and sea salt in the deposited aerosols were about one tenth and one hundredth lower than that in the aerosols, respectively. On the basis of the measured concentration and the deposited amount on leaves, the deposition velocity of black carbon was estimated to be approximately 0.5 cm/s.

Feasibility of Endoscopic Papillary Large Balloon Dilation in Patients with Difficult Bile Duct Stones without Dilatation of the Lower Part of the Extrahepatic Bile Duct

( Yuji Fujita ),( Akito Iwasaki ),( Takamitsu Sato ),( Toshio Fujisawa ),( Yusuke Sekino ),( Kunihiro Hosono ),( Nobuyuki Matsuhashi ),( Kentaro Sakamaki ),( Atsushi Nakajima ),( Kensuke Kubota ) 대한소화기학회 2017 Gut and Liver Vol.11 No.1

Background/Aims: There is no consensus for using endoscopic papillary large balloon dilation (EPLBD) in patients without dilatation of the lower part of the bile duct (DLBD). We evaluated the feasibility and safety of EPLBD for the removal of difficult bile duct stones (diameter ≥10 mm) in patients without DLBD. Methods: We retrospectively reviewed the records of 209 patients who underwent EPLBD for the removal of bile duct stones from October 2009 to July 2014. Primary outcomes were the clearance rate and additional mechanical lithotripsy. Secondary outcomes were the incidence of complications and recurrence rate. Results: Fiftyseven patients had DLBD (27.3%), and 152 did not have DLBD (72.7%). There were no significant differences in the overall success rate or the use of mechanical lithotripsy. Success rate during the first session and procedure time were better in the DLBD than the without-DLBD group (75.7% vs 66.7%, 48.1±23.0 minutes vs 58.4±31.7 minutes, respectively). As for complications, there were no significant differences in the incidence of pancreatitis, perforation or bleeding after endoscopic retrograde cholangiopancreatography. The recurrence rate did not differ significantly between the two groups. Conclusions: EPLBD is a useful and safe method for common bile duct stone removal in patients without DLBD. (Gut Liver 2017;11:149-155)