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Observation and Data Archiving System of a Superconducting Gravimeter at Syowa Station, Antarctica

International Journal of Geosciences 2015年第10期6卷 1116-1126页

作者： Yuichi Aoyama Hiroshi Ikeda Hideaki hayakawa Koichiro Doi Yoichi Fukuda Kazuo Shibuya National Institute of Polar Research Tokyo Japan Department of Polar Science SOKENDAI (The Graduate University for Advance Studies) Tokyo Japan Research Facility Center for Science and Technology University of Tsukuba Tsukuba Japan Graduate School of Science Kyoto University Kyoto Japan

A superconducting gravimeter (SG, model TT70#016, GWR Instruments) was deployed for the first time in Antarctica in 1992 at Syowa Station. Observations began in April 1993. Although the SG was equipped with a 10 K cryocooler, its liquid helium (LHe) required refilling twice a year to maintain its superconducting state. The LHe was produced by a separate helium liquefier. After continuous gravity measurement with the SG for 11 years, it was replaced by a second SG (CT#043) with a 4 K cryocooler in December 2003 in order to reduce loads of person in charge for LHe production. Because the manufacturer could not supply a replacement 4 K cryocooler, this SG ceased measurement in November 2009. In January 2010, a new superconducting gravimeter (OSG#058) was installed and had recorded high-quality gravity time series with data acquired every second for more than five years without interruption. Because the personal computer (PC) controlling the observation and data acquisition is connected with PCs in Japan through an Intelsat satellite communication link, we can check the status of observations in real time. It is also possible to fix remotely certain problems with the gravimeter. The observed gravity data are transferred daily to a data server in Japan. Also included in the upload are diagnostic data of the gravimeter such as the temperature of the coldhead and environmental data such as atmospheric pressure. Plots of the daily data are publicly available. The raw data with a 1 s sampling interval are also released to registered researchers. The released gravity time series along with the environmental data are greatly useful for investigating solid earth dynamics especially in the long period bands. We provide necessary information to use these long-range data sets.

关键词： Superconducting Gravimeter Remote Observation Monitoring High Quality Data Antarctica

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作者： (美)塞缪尔·早川(Samuel hayakawa) (美)艾伦·早川(Alan hayakawa)

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An Evans Syndrome Case Expressing Anti-Jk<sup>a</sup>Autoantibody under Condition of Primary IgA Immunodeficiency

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International Journal of Clinical Medicine 2015年第7期6卷 496-499页

作者： Takeshi Sugimoto Ayumi Tani Ikuyo hayakawa Makoto Hashimoto Tomoko Yanai Ikuko Kubokawa Takeshi Mori Takeshi Kato Satoshi Hirase Nobuyuki Yamamoto Hironobu Minami Akira hayakawa Department of Hematology and Oncology Kita-Harima Medical Center Ono Japan Department of Blood Transfusion Kobe University Hospital Kobe Japan Institute of Biomedical Research and Innovation Kobe Japan Department of Pediatric Medicine Kobe University Hospital Kobe Japan

Autoimmune haemolytic anaemia is a haemolytic disease resulting from an autoimmune reaction to the surface of red blood cells. A part of autoantibody is known to react with the blood type antigen. This is the case of a 14 years old female with Evans syndrome in which autoimmune haemolysis may cause from anti-Jka autoantibody reaction. As this case is complicated with primary IgA immunodeficiency syndrome, anti-Jka autoantibody may occur under the condition of primary immunodeficiency status, in which autoantibody production is accelerated. Considering the co-occurrence of autoimmune haemolytic anaemia and primary IgA immunodeficiency syndrome, analysis focusing on specificity for red blood cells antigens will be required in IgA immunodefi-ciency syndrome patients.

关键词： Anti-Jka Autoantibody Evans Syndrome IgA Immunodeficiency

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Influence of Agricultural Activity on Nitrogen Budget in Chinese and Japanese Watersheds

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Pedosphere 2012年第2期22卷 137-151页

作者： S. D. KIMURA YAN Xiao-Yuan R. HATANO A. hayakawa K. KOHYAMA TI Chao-Pu DENG Mei-Hua M. HOJITO S. ITAHASHI K. KURAMOCHI CAI Zu-Cong M. SAITO Tokyo University of Agriculture and Technology Tokyo （Japan） Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Hokkaido University Sapporo （Japan） Akita Prefectural University Akita （Japan） National Institute for Agro-Environmental Sciences Tsukuba （Japan） Kitasato University Towada （Japan） Tohoku University Osaki （Japan）

To analyze the effect of agricultural activity on nitrogen(N) budget at the watershed scale,a comparative study was conducted at two Japanese watersheds,the Shibetsu River watershed(SRW) and Upper-Naka River watershed(UNRW),and one Chinese watershed,the Jurong Reservoir watershed(JRW).The total area and the proportion of agricultural area(in parentheses) of the watersheds were 685(51%),1 299(21%),and 46 km 2(55%) for SRW,UNRW,and JRW,*** main agricultural land use in SRW was forage grassland,while paddy fields occupied the highest proportion of cropland in UNRW(11% of total area) and JRW(31% of total area).The farmland surplus N was 61,48,and 205 kg N ha 1 year 1 for SRW,UNRW,and JRW,*** total input and output for the whole watershed were 89 and 76,83 and 61,and 353 and 176 kg N ha 1 year 1 for SRW,UNRW,and JRW,*** proportion of discharged N to net anthropogenic N input was 31%,37%,and 1.7% for SRW,UNRW,and JRW,*** two watersheds in Japan showed similar proportions of discharged N to those of previous reports,while the watershed in China(JRW) showed a totally different characteristic compared to previous *** high N input in JRW did not increase the amount of discharged N at the outlet of the watershed due to high proportions of paddy fields and water bodies,which was an underestimated N sink at the landscape scale.

关键词： anthropogenic nitrogen input denitrification discharged nitrogen land use nitrogen balance

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BEOL工艺统合Integration——low-k Dual/Damascene的形成

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半导体技术 2003年第3期28卷 77-78,73页

作者： LI-Hung Chen Takashi hayakawa Kaoru Maekawa Kouichiro Inazawa Tokyo Electron ShanghaiLtd Tokyo Electron ShanghaiLtdTokyo Electron LtdTokyo Electron Shang haiLtd Japan.

1简介当前,从成膜方法来讲,ILD loW-k材料大致上分为两类:一类是以SiCOH为代表的CVD(化学气相淀积)膜,另一类是SOD(旋转涂层)膜,它包括有机的、无机的和SiCOH.

关键词： BEOL工艺 Dual/Damascene LOW-K材料 SOD沉淀蚀刻技术

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电离层离子丰度对哨声传播经度效应的影响

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空间科学学报 1990年第3期10卷 197-203页

作者：周怀北徐继生梁百先保宗悌 M.hayakawa 中国科学院空间科学与应用研究中心武汉大学空间物理系日本名古屋大学空电研究所

Iss-b卫星探测结果表明,|电离层离子丰度呈现经度变化.本文选取较真实的电离层模型参数,对130°E和114°E两个子午面内传播的低纬哨声进行了射线跟踪.我们发现,由于[O^+],[He^+]和[H^+]决定的电子浓度垂直梯度的经度变化,导致哨声传播... 详细信息

Iss-b卫星探测结果表明,|电离层离子丰度呈现经度变化.本文选取较真实的电离层模型参数,对130°E和114°E两个子午面内传播的低纬哨声进行了射线跟踪.我们发现,由于[O^+],[He^+]和[H^+]决定的电子浓度垂直梯度的经度变化,导致哨声传播特性的经度效应,使得130°E比114°E内传播的低纬哨声更好地满足透射条件:|μsinδ|≤1.与电子浓度的水平梯度的影响比较,离子丰度决定的电子浓度垂直梯度随经度的变化使哨声传播产生的经度效应明显得多.武昌(地理30.5°N,114.6°E;地磁19.3°N).和鹿儿岛(31.5°N,130.8°E;20.5°N)两台站观测到的哨声出现率的经度效应证实了本文的理论预言.

关键词：电离层哨声传播离子丰度经度

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Effects of Mild Hyperthermia Treatment Using Nano-Mist Sauna on Blood Gas Parameters and Skin Appearance

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Health 2018年第5期10卷 577-586页

作者： Takayoshi hayakawa Mayumi Watanabe Chikako Tomiyama Ayaka Sasagawa Takashi Honma Akihiro Inada Toru Abo CORONA CORPORATION Niigata Japan Faculty of Science and Engineering Chuo University Tokyo Japan Faculty of Health Sciences Kansai University of Health Sciences Osaka Japan Graduate School of Health Sciences Niigata University Niigata Japan Toru Abo Research Center Niigata Japan

Physicians often observe patients’ complexion (their natural skin color) as an indicator of health. The complexion may depend on the internal environment, however, very few researchers studied its evidence. We previously reported various benefits of a mild hyperthermia treatment on human health using the nano-mist sauna (NMS), including acceleration of gas exchange (O2 and CO2) in the venous blood, enhancement of immunity, and the modulation of autonomic nervous system. However, the effects of NMS on skin appearance are unknown. There is a historical and widespread belief that mild hyperthermic treatments such as hot springs are good for improving skin appearance. However, the effect of NMS on the skin appearance has not been examined. In the present study, we examined the color of venous blood using the CIELAB (a color space specified by the French Commission internationale de l’éclairage) method, and then compared the color changes before and after NMS stimulation. Next, we examined correlations of blood gas parameters with color elements of the venous blood, which are highly dependent on oxygen. Our results suggest that the colors and appearance of the face depend on the internal environment, because there are numerous vessels under the skin. Thus, the color of the venous blood may provide medical evidence of changes in complexion. This new method may be useful for assessment of medical complexion by physicians, for use in determining internal health based on skin color information.

关键词： Nano-Mist Sauna Hyperthermia Treatment Medical Complexion Blood Gas Color Commission Internationale de L’éclairage

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A 500-MS/s, 2.0-mW, 8-Bit Subranging ADC with Time-Domain Quantizer

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Circuits and Systems 2017年第1期8卷 1-13页

作者： Kenichi Ohhata Kaihei Hotta Naoto Yamaguchi Daiki hayakawa Kenji Sewaki Kento Imayanagida Yuuki Sonoda Department of Electrical and Electronics Engineering Graduate School of Science and Engineering Kagoshima University Kagoshima Japan

This paper describes a novel energy-efficient, high-speed ADC architecture combining a flash ADC and a TDC. A high conversion rate can be obtained owing to the flash coarse ADC, and low-power dissipation can be attained using the TDC as a fine ADC. Moreover, a capacitive coupled ramp circuit is proposed to achieve high linearity. A test chip was fabricated using 65-nm digital CMOS technology. The test chip demonstrated a high sampling frequency of 500 MHz and a low-power dissipation of 2.0 mW, resulting in a low FOM of 32 fJ/conversion-step.

关键词： Time-Based ADC Flash ADC TDC VTC CMOS

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Optimization of Supercritical CO2 Extraction of Lycopene from Tomato Skin

Optimization of Supercritical CO2 Extraction of Lycopene fro...

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第四届中美化学工程会议和第三届中日化工研讨会合并的三边化学工程大会

作者： Ummihan Topal Mitsuru Sasaki Motonobu Goto Kiro hayakawa Go Momma Kumamoto University Japan

Lycopene is the red carotenoid pigment found predominantly in tomatoes and in a few other fruits and vegetables. Increasing clinical evidence suggests lycopene is an important natural anti- oxidant and it appears to provide protection against a broad range of epithelial cancers. Supercritical carbon dioxide (SCCO2) as a non-toxic alternative to traditional organic solvent extraction methods has been most widely used in extracting materials from natural products. The solvent strength of a supercritical fluid, which is directly related to its density, can be modified by changing the extraction pressure and temperature. The experiments were carried out by optimizing the operating conditions at pressures and temperatures ranging from 20 to 50 MPa at 10 MPa intervals and 40 to 100 oC at 10 oC intervals,

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Development of a Molecular Marker to Identify a Candidate Line of Turmeric (Curcuma longa L.) with a High Curcumin Content

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American Journal of Plant Sciences 2011年第1期2卷 15-26页

作者： Hiroshi hayakawa Tetsuya Kobayashi Yukio Minaniya Katsura Ito Akira Miyazaki Tatsuya Fukuda Yoshinori Yamamoto 不详

Dried and fresh rhizomes of the spice turmeric (Curcuma longa L.) are well known in traditional medicine, and curcu- min is widely used in various geographic regions. Although there are differences in the amount of curcumin within this species, identification of the candidate line by rhizome is difficult because of the relative simplicity of its morphological characteristics. To accurately identify lines of C. longa with a high content of curcumin, we analysed several sequences of chloroplast DNA. First, to determine the appropriate outgroup taxa in which to conduct infras-pecific analyses of C. longa, we reconstructed the molecular phylogenetic tree of C. longa and its allied species. The results showed that C. aromatica and C. zedoaria are closely related to C. longa. Next, to develop a molecular marker for identifying lines of C. longa with a high content of curcumin, a network analysis using chloroplast microsatellite regions was performed. Results showed that a unique haplotype within C. longa corresponds to the high curcumin content line. Therefore, the chloroplast microsatellite regions used for the analysis allowed us to determine the lines of this species with high cur- cumin content.

关键词： Chloroplast DNA Curcuma Curcuma Longa Curcumin Molecular Analysis

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