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Plasma Science and Technology 2010年第3期12卷 369-371页

作者： K.ishii K.OKUNO Department of Physics Nara Women's University Kitauoyanishi

Charge transfer cross sections for Kr^q＋ with Ne are calculated quantitatively by using modified classical over barrier model in order to clarify energy dependence of charge transfer cross sections in low energy region. Essential of this model is taking the induced dipole potential into consideration. As a result, this calculation can reproduce systematic energy dependence of experimental results. This suggests that the bending trajectory of the projectile due to an induced dipole potential should be considered to describe pictures of collisions at low energy regime below 1 keV/u.

关键词： atomic processes highly charged ion charge transfer classical over barrier

LESS-INVASIVE LASER THERAPY AND DIAGNOSIS USING A TABLETOP MID-INFRARED TUNABLE LASER

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Journal of Innovative Optical Health Sciences 2010年第4期3卷 285-292页

作者： HISANAO HAZAMA KATSUNORI ishii KUNIO AWAZU Graduate School of Engineering Osaka University 2-1 YamadaokaSuitaOsaka 565-0871Japan Research Institute of Nuclear Engineering University of Fukui 3-9-1 BunkyoFukuiFukui 910-8507Japan Institute for Chemical Research Kyoto University GokashoUjiKyoto 611-0011Japan

Since numerous characteristic absorption lines caused by molecular vibration exist in the midinfrared(MIR)wavelength region,selective excitation or selective dissociation of molecules is possible by tuning the laser wavelength to the characteristic absorption lines of target *** applying this feature to the medical fields,less-invasive treatment and non-destructive diagnosis with absorption spectroscopy are possible using tunable MIR lasers.A high-energy nanosecond pulsed MIR tunable laser was obtained with difference-frequency generation(DFG)between a Nd:YAG and a tunable Cr:forsterite *** MIR-DFG laser was tunable in a wavelength range of 5.5–10μm and generated laser pulses with energy of up to 1.4mJ,a pulse width of 5 ns,and a pulse repetition rate of 10 *** removal of atherosclerotic lesion was successfully demonstrated with the MIR-DFG laser tuned at a wavelength of 5.75μm,which corresponds to the characteristic absorption of the ester bond in cholesterol esters in the atherosclerotic *** have developed a non-destructive diagnostic probe with an attenuated total reflection(ATR)prism and two hollow optical *** absorption spectrum of cholesterol was measured with the ATR probe by scanning the wavelength of the MIR-DFG laser,and the spectrum was in good agreement with that measured with a commercial Fourier transform infrared spectrometer.

关键词： Mid-infrared tunable laser difference-frequency generation selective treatment attenuated total reflection spectroscopy hollow optical fiber

PLC Multi-Chip Integration Technologies

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光学学报 2003年第S1期23卷 199-200页

作者： Motohaya ishii NTT Photonics Laboratories NTT Corporation 3-1 Wakamiya Morinosato Atsugi Kanagawa Japan

This paper reviews recent progress on integrated multi-chip modules composed of silica-based planar lightwave circuits (PLCs) with a relatively high core-to-cladding index contrast A. These compact and highly function... 详细信息

关键词： PLC Multi-Chip Integration Technologies with in that of AWG Figure

When and how does brain-derived neurotrophic factor activate Nrf2 in astrocytes and neurons？

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Neural Regeneration Research 2018年第5期13卷 803-804页

作者： Tetsuro ishii Giovanni E.Mann University of Tsukuba Tsukuba Japan School of Cardiovascular Medicine and Sciences King's British Heart Foundation Centre of Excellence Faculty of Life Sciences and Medicine King's College Iondon London UK

Circadian rhythm protects neurons：Although the master clock entrains the whole body rhythm,peripheral tissues also express core clock transcription factors Clock and Bmal1,which regulate expression of clock genes including Period（Per）and Cryptochrome（Cry）*** of Per and Cry proteins repress Bmal1-and Clock-mediated transcription forming a negative feedback loop,which regulates nearly a 24 hours self-sustained rhythm including energy metabolism.

关键词： When and how does brain-derived neurotrophic factor activate Nrf2 in astrocytes and neurons NGF

Generation of spectrally stable 6.5-fs visible pulses via filamentation in krypton

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High Power Laser Science and Engineering 2016年第2期4卷 75-79页

作者： Keisuke Kaneshima Kengo Takeuchi Nobuhisa ishii Jiro Itatani The Institute for Solid State Physics The University of Tokyo

We produced 5-μJ, 6.5-fs visible pulses at a repetition rate of 1 kHz using filamentation in a gas cell filled with krypton followed by spectral selection and phase compensation by a combination of dielectric mirrors. The visible pulses have a smooth spectrum from 520 to 650 nm with a shot-to-shot stability in each spectral component of better than 2%(standard deviation). This pulse compression scheme is simple and robust, and can be easily integrated into intense ultrashort-pulse laser systems.

关键词： filamentation ultrafast spectroscopy ultrashort visible pulses

Recoil Momentum of Target Ions in Collisions of Ar^(6+)+CO_2 at Energies Below 300 eV/u

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Plasma Science and Technology 2010年第3期12卷 361-363页

作者： Y.INOUE K.ishii H.OGAWA Graduate school of Humanities and Sciences Nara Women's University Dept. of Physics Nara Women's University

The collision dynamics and fragmentation process of molecule by highly charged ion impact for single electron capture processes at the low energies below 1 keV/u were studied. The collision energy dependence of the recoil momentum was obtained experimentally and compared it with those calculated by a theoretical model using a deflection function with polarization potential. A fairly good agreement between the measured and calculated results was reached. This suggests that the polarization potential plays a crucial role in the low-energy region.

关键词： atomic process highly charged ion charge transfer classical over barrier model molecular fragmentation

Cooperative function of antioxidant and redox systems against oxidative stress in male reproductive tissues

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Asian Journal of Andrology 2003年第3期5卷 231-242页

作者： Junichi Fujii Yoshihito Iuchi Shingo Matsuki Tatsuya ishii Department of Biochemistry Yamagata University School of Medicine Yamagata 990 9585 JapanDepartment of Biochemistry Yamagata University School of Medicine Yamagata 990 9585 JapanDepartment of Biochemistry Yamagata University School of Medicine Yamagata 990 9585 JapanDepartment of Biochemistry Yamagata University School of Medicine Yamagata 990 9585 Japan

Reactive oxygen species (ROS) are produced under oxidative stress, such as high oxygen concentration and during the metabolic consumption of oxygen molecules. Male reproductive tissues appear to be continuously exposed to ROS produced by active metabolism. In addition, spermatozoa must pass through a high oxygen environment during the mating process. Thus, to maintain viable reproductive ability, a protective mechanism against oxidative stress is of importance. Here, we overview our current understanding of the cooperative function of antioxidative and redox systems that are involved in male fertility. Superoxide dismutase and glutathione peroxidase are major enzymes that scavenge harmful ROS in male reproductive organs. In turn, glutathione and thioredoxin systems constitute the main redox systems that repair oxidized and damaged molecules and also play a role in regulating a variety of cellular functions. While glutathione functions as an antioxidant by donating electrons to glutathione peroxidase and thioredoxin donates electrons to peroxiredoxin as a counterpart of glutathione peroxidase. In addition, aldo-keto reductases, which detoxify carbonyl compounds produced by oxidative stress, are present at high levels in the epithelia of the genital tract and Sertoli cells of the testis. Since these systems are involved in cross-talk, a comprehensive understanding will be required to maintain the physiological functions of male reproductive system.

关键词： reactive oxygen species superoxide dismutase glutathione thioredoxin peroxiredoxin aldo-keto reduc-tase

An enhanced framework for providing multimedia broadcast/multicast service over heterogeneous networks

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Journal of Zhejiang University-Science C(Computers and Electronics) 2014年第1期15卷 63-80页

作者： Yi-han XU Chee-Onn CHOW Mau-Luen THAM Hiroshi ishii Department of Electrical Engineering University of Malaya Professional Graduate School of Embedded Technology Tokai University

Multimedia broadcast multicast service(MBMS)with inherently low requirement for network resources has been proposed as a candidate solution for using such resources in a more efficient *** the other hand,the Next Generation Mobile Network(NGMN)combines multiple radio access technologies(RATs)to optimize overall network *** performance is becoming a vital indicator of the quality experience of mobile user equipment(UE).In contrast to the conventional vertical handover issue,the problem we are facing is how to seamlessly transmit broadcast/multicast sessions among heterogeneous *** this paper,we propose a new network entity,media independent broadcast multicast service center(MIBM-SC),to provide seamless handover for broadcast/multicast sessions over heterogeneous networks,by extensions and enhancements of MBMS and media independent information service(MIIS)***,a network selection scheme and a cell transmission mode selection scheme are proposed for selecting the best target network and best transmission *** schemes are based on a load-aware network capacity estimation *** results show that the proposed approach has the capability to provide MBMS over heterogeneous networks,with improved handover performance in terms of packet loss rate,throughput,handover delay,cell load,bandwidth usage,and the peak signal-to-noise ratio(PSNR).

关键词： IEEE 802.21 MIBM-SC MBMS MILS Heterogeneous networks Network resource management

Prevalence of linked angina and gastroesophageal reflux disease in general practice

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World Journal of Gastroenterology 2009年第14期15卷 1764-1768页

作者： Hirohito Kato Takamasa ishii Tatsuo Akimoto Yoshihisa Urita Motonobu Sugimoto Department of General Medicine and Emergency Care Toho University School of Medicine Omori Hospital 6-11-1 Omori-Nishi Ota-Ku Tokyo 143-8541 Japan

AIM： To evaluate the association between gastroesophageal reflux diseases （GERD） and coronary heart diseases. METHODS： One thousand nine hundred and seventy consecutive patients who attended our hospital were enrolled. All of the patients who first attend our hospital were asked to respond to the F-scale questionnaire regardless of their chief complaints. All patients had a careful history taken, and resting echocardiography （ECG） was performed by physicians if the diagnostic necessity arose. Patients with ECG signs of coronary artery ischemia were defined as ST- segment depression based on the Minnesota code. RESULTS： Among 712 patients （36%） with GERD, ECG was performed in 171 （24%）, and ischemic changes were detected in eight （5%）. Four （50%） of these patients with abnormal findings upon ECG had no chest symptoms such as chest pain, chest oppression, or palpitations. These patients （0.6%; 4/712） were thought to have non-GERD heartburn, which may be related to ischemic heart disease. Of 281 patients who underwent ECG and did not have GERD symptoms, 20 （7%） had abnormal findings upon ECG. In patients with GERD symptoms and ECG signs of coronary artery ischemia, the prevalence of linked angina was considered to be 0.4% （8/1970 patients）.CONCLUSION： The present study suggested that ischemic heart disease might be found although a patient was referred to the hospital with a complaint of GERD symptoms. Physicians have to be concerned about missing clinically important coronary artery disease while evaluating patients for GERD symptoms.

关键词： Linked angina Epidemiology Generalpractice Electrocardiography Gastroesophageal reflexdisease

Characterization of termetallic Pt-Ir-Au catalysts for NO decomposition

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Rare Metals 2011年第1期30卷 53-57页

作者： Akira Morikawa Kohei Okumura Masaru ishii Koichi Kikuta Akihiko Suda Hirofumi Shinjo Catalyst Lab. Toyota Central R&D Labs.Inc.41-1 YokomichiNagakuteNagakute-ChoAichi-GunAichi 480-1192Japan Vehicle Engineering Group Material Engineering Division ⅡToyota Motor Corporation1 Toyota-choToyotaAichi 471-8572Japan Department of Crystalline Materials Science School of EngineeringNagoya UniversityFuro-ChoChikusa-KuNagoyaAichi 464-8603Japan

A termetallic catalyst of Pt-Ir-Au/Al2O3 for NOx decomposition was prepared by loading the metallic colloids in C2H5OH-H2O solution and a surfactant of polyvinyl *** with an impregnated Pt/Al2O3 catalyst,the termetallic catalyst of PtIrAu811/Al2O3,with a Pt：Ir：Au atomic ratio of 8：1：1,exhibited higher NO decomposition and selectivity to *** electron microscopy and X-ray diffraction were conducted to clarify the state of the supported metals and indicate three precious metals alloyed on the *** the study of NO-temperature programmed desorption,oxygen desorption on the PtIrAu811 catalyst shifted to the low temperature side compared to that on Pt/Al2O3,which correlated well with its higher catalytic performance in NO decomposition.

关键词： catalysts iridium gold platinum decomposition nitrogen oxides