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Chemical Research in Chinese Universities 1997年第2期13卷 71-76页

作者： YANG Huai Hrotsugu kikuchi CHENG Xin-Fang Tisato Kajiyama Institute of Materials Science Jilin UniversityChangchun130023 Department of Chemical Science and Technology Faculty of EngineeringKyushu University6-10-1HakozakiHigashi-kuFukuoka 812Japan

The phase transition behavior and aggregating states of [smectic LCP, PS(4BC/DM)/nematic LC, E7/chiral dopant, CB 15] ternary composite system were investigated on the basis of differential scanning calorimetry (DSC) measurement, polarizing optical microscopy (POM) observation and wide angle X ray diffraction (WAXD) patterns. It was demonstrated that if the weight ratio of the chiral dopant was fixed as 4.8wt%, an induced chiral nematic (N *) phase existed in the ternary system when PS(4BC/DM) ratio was below 47.6 wt%. Moreover, smectic like long range ordering appeared in the induced N * phase in a certain temperature range just above the smectic A(S A) N * phase transition when PS(4BC/DM) ratio was between 19.1wt% and 47.6wt%.

关键词： Mesomorphic Induced chiral nematic phase Dopant

Fabrication,nanostructures and electronic properties of nanodiamond-based solar cells

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Progress in Natural Science:Materials International 2010年第1期20卷 38-43页

作者： Akihiko NAGATA Takeo OKU Kenji kikuchi Atsushi SUZUKI Yasuhiro YAMASAKI Eiji OSAWA Department of Materials Science The University of Shiga Prefecture Orient Chemical industries Co.Ltd. Department of New Business8-1 Sanra-Higashi-MachiNeyagawaOsaka572-8581Japan 3. NanoCarbon Research Institute Ltd.3-15-1 TokidaUedaNagano386-8567Japan

Nanodiamond-based solar cells were fabricated and the photovoltaic properties were ***(C60)and fullerenol(C60(OH)10-12)were used as n-type semiconductors,and diamond nanoparticles and metal phthalocyanine derivative were used as p-type *** nanostructures of the solar cells were investigated by transmission electron microscopy and X-ray diffracometry,and the electronic property was discussed.

关键词： solar cell nanodiamond C60 phthalocyanine

Growth of GaN/AlxGa1-xN (x=0.65) Superlattices on Si(111) Substrates Using RF-MBE

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Journal of Rare Earths 2006年第Z1期24卷 1-3页

作者： Armando S Somintac Tomo kikuchi Michiya Odawara Takashi Udagawa Motoi Wada Tadashi Ohachi Department of Electric Engineering Doshisha University 1-3 Miyakodani Tatara Kyotanabe Kyoto 610-0321 Japan Department of Electric Engineering Doshisha University 1-3 Miyakodani Tatara Kyotanabe Kyoto 610-0321 Japan Electronic Materials Division Electronics Section Showa Denko K.K. 1505 Shimokagemori Chichibu Saitama 369-1871 Japan Electronic Materials Division Electronics Section Showa Denko K.K. 1505 Shimokagemori Chichibu Saitama 369-1871 Japan Department of Electric Engineering Doshisha University 1-3 Miyakodani Tatara Kyotanabe Kyoto 610-0321 Japan Department of Electric Engineering Doshisha University 1-3 Miyakodani Tatara Kyotanabe Kyoto 610-0321 Japan

Superlattices with varying GaN well widths (2, 3, 6, 9 nm) and fixed AlGaN barrier (8 nm) with high Al-content (x=0.65) were grown. Streaky RHEED patterns indicated 2D growth mode for the superlattices. XRD measurements showed multiple satellite peaks corresponding to uniform periodicity of the GaN/AlGaN pairs. The AlGaN barrier XRD peak also shifted with increasing well widths, while the GaN XRD peak was nominally unchanged. Room temperature photoluminescence experiments revealed peak emissions at energies lower than the bulk GaN energy gap. The large red shift with respect to the bulk gap is attributed to significant Stark effect for wide multiple quantum wells.

关键词： molecular beam epitaxy superlattices GaN AlGaN built-in electric field stark effect

Dual Torch Plasma Arc Furnace for Medical Waste Treatment

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Plasma Science and Technology 2007年第6期9卷 709-712页

作者：刘斌 M.kikuchi 李和平 T.IWAO T.INABA Graduate School of Science and Engineering Chuo UniversityTokyo 112-8551Japan Department of Engineering Physics Tsinghua UniversityBeijing 100084China Faculty of Engineering Musashi Institute of TechnologyTokyo 158-8557Japan

In this paper, characteristics of a treatment and operated at atmospheric pressure dual torch plasma arc used for hazardous waste are studied, and also compared with those of the multi-torch plasma arc and the single torch plasma arc. The dual torch plasma arc is generated between the cathode and anode with argon as the working gas. The temperature distributions of the plasma arc are measured using a spectroscope and line pair method with the assumption of local thermodynamic equilibrium （LTE） for the DC arc current I=100 A and argon flow rate Q = 15 slpm. The measurements show that the temperatures of the dual torch arc plasma in the regions near the cathode, the anode and the center point are 10,000 K, 11,000 K and 9,000 K, respectively. And the high temperature region of the multi torch plasma arc is of double or much wider size than that of a conventional dual torch plasma arc and single plasma torch. Based on the preceding studies, a dual torch plasma arc furnace is developed in this study. The measured gas temperature at the center region of the argon arc is about 11,000 K for the case of I=200 A and Q=30 slpm operated in atmosphere.

关键词： dual torch plasma arc furnace medical waste

Effects of tomato juice on the pharmacokinetics of CYP3A4-substrate drugs

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Asian Journal of Pharmaceutical Sciences 2017年第5期12卷 464-469页

作者： Atsuko Ohkubo Tomomi Chida Hidetomo kikuchi Tadashi Tsuda Katsuyoshi Sunaga Laboratory of Pharmacotherapy Department of Clinical Dietetics and Human Nutrition Faculty of Pharmaceutical Sciences Josai University

We previously demonstrated that tomato juice(TJ) contains potent mechanism-based inhibitor(s) of CYP3A4. In this study, we investigated the effects of TJ and grapefruit juice(GFJ)on the pharmacokinetics of the CYP3A4-substrate drugs, nifedipine(NFP) and midazolam(MDZ), in male Wistar rats. Oral administration of GFJ 90 min before the intraduodenal administration of NFP or MDZ increased the area under the concentration–time curves(AUCs)of NFP and MDZ by 32.4% and 89.4%, respectively. TJ increased MDZ blood concentrations and AUC after intraduodenal MDZ administration;however, it had no effect on NFP. When MDZ and NFP were intravenously administered, GFJ significantly increased the AUC of MDZ,but only slightly increased that of NFP. In contrast, TJ only slightly increased the AUC of *** results suggest that, similar to GFJ, TJ influences the pharmacokinetics of CYP3A4-substrate drugs;however, it may be a drug-dependent partial effect.

关键词： Food–drug interactions Tomato juice Grapefruit juice Nifedipine Midazolam Pharmacokinetic interactions

Evaluation of sorafenib for hepatocellular carcinoma by contrast-enhanced ultrasonography:A pilot study

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World Journal of Gastroenterology 2012年第40期18卷 5753-5758页

作者： Kazue Shiozawa Manabu Watanabe Yoshinori kikuchi Takahide Kudo Kenichi Maruyama Yasukiyo Sumino Division of Gastroenterology and Hepatology Department of Internal MedicineToho University Medical CenterOmori HospitalTokyo 143-8541Japan Department of Clinical Functional Physiology Toho University Medical CenterOmori HospitalTokyo 143-8541Japan

AIM:To determine the usefulness of arrival time parametric imaging(AtPI) using contrast-enhanced ultrasonography(CEUS) with Sonazoid in evaluating early response to sorafenib for hepatocellular carcinoma(HCC).METHODS:Fourteen advanced HCC patients who received sorafenib 400/800 mg/d for at least 4 wk and were followed up by CEUS were enrolled in this *** was performed before treatment and 2 and 4 wk after treatment,and images of the target lesion in the arterial phase were recorded for each *** images were analyzed by *** mapping(CM) images obtained by AtPI were compared before and after the *** these CM images,the mean arrival time of the contrast agent in the region of interest from the starting point [mean time(MT)] was *** each patient,differences between MT before and MT 2 and 4 wk after the treatment were compared with responses evaluated 4-8 wk after the treatment by dynamic computed tomography(CT),and statistical analysis was *** response evaluation criteria in solid tumors was used for the response ***:In CM images both 2 and 4 wk after the treatment,delays in the arrival time of the contrast agent were noted in 8 of the 14 *** the other 6 patients,no color changes were observed in the tumor,or red and/or yellow increase,suggesting a decrease in blood flow velocity between images 2 and 4 wk after the treatment and those before the *** CT could be performed 4-8 wk after the treatment in 13 of the 14 *** differences in the MT were 1.13 s and 1.015 s,2 and 4 wk after the treatment,respectively,in the 8 patients who showed stable disease(SD)/partial response(PR) on dynamic *** differences in the MT were-0.39 s and-0.95 s,2 and 4 wk after the treatment,respectively,in the 5 patients who showed progressive disease(PD).Differences in the median MT between SD/PR and PD groups were significant 2 and 4 wk after the treatment with P = 0.019 and P = 0.028,resp

关键词： Sorafenib Sonazoid Contrast-enhanced ul-trasonography Hepatocellular carcinoma Therapeutic response

Applications of same-beam VLBI in the orbit determination of multi-spacecrafts in a lunar sample-return mission

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Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1153-1161页

作者： GOOSSENS Sander kikuchi Fuyuhiko MATSUMOTO Koji HANADA Hideo National Astronomical Observatory of Japan

Same-beam VLBI means that two spacecrafts with small separation angles that transmit multi-frequency signals specially designed are observed simultaneously through the main beam of receiving antennas. In same-beam VLBI,the differential phase delay between the two spacecrafts and the two receiving antennas can be obtained within a small error of several picoseconds. As a successful application,the short-arc orbit determination of several hours for Rstar and Vstar,which are two small sub-spacecrafts of SELENE,has been much improved by using the same-beam VLBI data together with the Doppler and range data. The long-arc orbit determination of several days has also been accomplished within an error of about 10 m with the same-beam VLBI data incorporated. These results show the value of the same-beam VLBI for the orbit determination of multi-spacecrafts. This paper introduces the same-beam VLBI and Doppler observations of SELENE and the orbit determination results. In addition,this paper introduces how to use the same-beam VLBI for a lunar sample-return mission,which usually consists of an orbiter,a lander and a return unit. The paper also offers the design for the onboard radio sources in the lunar sample-return mission,and introduces applications of S-band multi-frequency same-beam VLBI in lunar gravity exploration and applications during all stages in the position/orbit determinations such as orbiting,landing,sampling,ascending,and docking.

关键词： same-beam VLBI differential phase delay sample-return orbit determination lunar gravity field

More than mimicry？ Evaluating scope for flicker-fusion as a defensive strategy in coral snake mimics

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Current Zoology 2014年第1期60卷 123-130页

作者： Georgia C. TITCOMB David W. kikuchi David W. PFENNIG Department of Biology University of North Carolina at Chapel Hill Chapel Hill NC 27599-3280

Coral snakes and their mimics often have brightly colored banded patterns, generally associated with warning colora- tion or mimicry. However, such color patterns have also been hypothesized to aid snakes in escaping predators through a ＂flicker-fusion＂ effect. According to this hypothesis, banded color patterns confuse potential predators when a snake transitions from resting to moving because its bands blur together to form a different color. To produce this motion blur, a moving snake＇s bands must transition faster than the critical flicker-fusion rate at which a predator＇s photoreceptors can refresh. It is unknown if coral snakes or their mimics meet this requirement. We tested this hypothesis by measuring the movement speed and color pat- terns of two coral snake mimics, Lampropeltis triangulum campbelli and L. elapsoides, and comparing the frequency of color transitions to the photoreceptor activity of the avian eye. We found that snakes often produced a motion blur, but moving snakes created a blurring effect more often in darker conditions, such as sunrise, sunset, and nighttime when these snakes are often active. Thus, at least two species of coral snake mimics are capable of achieving flicker-fusion, indicating that their color patterns may confer an additional defense aside from mimicry

关键词： Coral snake mimicry Flicker-fusion effect CFF Kingsnake Defensive strategy

Mictomagnetism and suppressed thermal conduction of the prototype high-entropy alloy CrMnFeCoNi

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Journal of Materials Science & Technology 2022年第4期99卷 55-60页

作者： Jianyan Yang Weijun Ren Xinguo Zhao Tatsuya kikuchi Ping Miao Kenji Nakajima Bing Li Zhidong Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China J-PARC Center Japan Atomic Energy AgencyTokai 319-1112IbarakiJapan Institute of Materials Structure Science High Energy Accelerator Research Organization(KEK)Tokai 319-1106IbarakiJapan Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China China Spallation Neutron Source Science Center Dongguan 523803GuangdongChina

High-entropy alloys are characteristic of extensive atomic occupational disorder on high-symmetric lattices,differing from traditional ***,we investigate the magnetic and thermal transport properties of the prototype face-centered-cubic high-entropy alloy CrMnFeCoNi by combining physical properties measurements and neutron ***-current and alternating-current magnetizations measurements indicate a mictomagnetic behavior with coexisting antiferromagnetic and ferromagnetic interactions below room temperature and three anomalies are found at about 80,40,and 20 K,which are related to the paramagnetic to antiferromagnetic transition,the antiferromagnetic to ferromagnetic transition,and the spin freezing,*** electrical and thermal conductivities are significantly reduced compared to Ni,and the temperature dependence of lattice thermal conductivity exhibits a glasslike *** neutron scattering measurements suggest weak anharmonicity so that the thermal transport is expected to be dominated by the defect scattering.

关键词： High-entropy alloys Magnetism Inelastic neutron scattering Lattice dynamics Thermal conductivity

Formation and characterization of phthalocyanine dimer/C60 solar cells

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Progress in Natural Science:Materials International 2011年第1期21卷 27-30页

作者： Akihiro TAKEDA Akira MINOWA Takeo OKU Atsushi SUZUKI Kenji kikuchi Yasuhiro YAMASAKI Department of Materials Science The University of Shiga Prefecture2500HassakaHikoneShiga 522-8533Japan Orient Chemical Industries Co.Ltd.Department of New Business8-1Sanra-Higashi-MachiNeyagawaOsaka 572-8581Japan

Organic solar cells withμ-oxo-bridged gallium phthalocyanine dimer(GaPc dimer) and fullerene were produced by an evaporation method.A device based on the GaPc dimer provided a conversion efficiency of 4.2×10-3%,which is better compared to a device based on phthalocyanine *** effect was discussed with a molecular orbital calculation,and the crystalline phases of the present solar cells were investigated by X-ray *** improvement of the efficiency was discussed on the basis of the experimental results.

关键词： phthalocyanine dimmer fullerene solar cell