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Optical Spectroscopic Monitoring Observations of a T Tauri Star V409 Tau

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International Journal of Astronomy and Astrophysics 2019年第3期9卷 321-334页

作者： Hinako Akimoto yoichi Itoh Nishi-Harima Astronomical Observatory Center for Astronomy University of Hyogo Hyogo Japan

We report the results of optical spectroscopic monitoring observations of a T Tauri star, V409 Tau. A previous photometric study indicated that this star experienced dimming events due to the obscuration of light from the central star with a distorted circumstellar disk. We conducted medium-resolution (R ~10,000) spectroscopic observations with 2-m Nayuta telescope at Nishi-Harima Astronomical Observatory. Spectra were obtained in 18 nights between November 2015 and March 2016. Several absorption lines such as Ca I and Li, and the Hαemission line were confirmed in the spectra. The Ic-band magnitudes of V409 Tau changed by approximately 1 magnitude during the observation epoch. The equivalent widths of the five absorption lines are roughly constant despite changes in the Ic-band magnitudes. We conclude that the light variation of the star is caused by the obscuration of light from the central star with a distorted circumstellar disk, based on the relationship between the equivalent widths of the absorption lines and the Ic-band magnitudes. The blue component of the Hαemission line was dominant during the observation epoch, and an inverse P Cygni profile was observed in eight of the spectra. The time-variable inverse P Cygni profile of the Hαemission line indicates unsteady mass accretion from the circumstellar disk to the central star.

关键词： Star Formation Pre-Main Sequence Stars T Tauri Stars

A VASUALIZATION FOR THE DYNAMIC BEHAVIORS OF THE MIXTURE OF WATER MASS FOR NORTHWESTERN PACIFIC NEAR JAPAN

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第S01期4卷 86-103页

作者： KUN ZHAO SATOSHI NAKADA NAOHISA SAKAMOTO KOJI KOYAMADA CHANDRAJIT BAJAJ yoichi ISHIKAWA TOSHIYUKI AWAJI TEIJI IN SEI-ICHI SAITOH Graduate School of Engineering Kyoto University KyotoKyoto Prefecture606-8501Japan Institute for the Promotion of Excellence in Higher Education Kyoto University KyotoKyoto Prefecture606-8501Japan Department of Computer Science The Institute for Computational Engineering and Sciences University of Texas at Austin AustinTexas78712USA Department of Geophysics Division of Earth and Planetary Sciences Kyoto University KyotoKyoto Prefecture606-8501Japan Data Research Center for Marine-Earth Sciences Japan Agency for Marine-Earth Science and Technology Yokosuka Kanakawa Prefecture237-0061Japan Japan Marine Science Foundation Tokyo Tokyo Metropolis110-0008Japan Laboratory of Marine Bioresource and Environment Sensing Faculty of Fisheries Sciences Hokkaido University SapporoHokkaido Prefecture060-0808Japan

Recent studies are focusing on the distribution of water mass because the mixture region of water mass is highly related to the rich fishing grounds[Yasuda I.,Watanabe Y.,***.3(3):172–181,1994].Due to the large data size and time-varying property,efficient exploration and visualization of the ocean data is always extremely *** extract the dynamic behaviors of the water mass and its mixture from a large-scale simulated ocean dataset,we developed an efficient visualization system by applying our volume compression method and our volume rendering *** system allows us to investigate the time-varying distributions of ocean physical properties,additionally from the user’s perspective and *** the experiments,we show the generality and expressiveness by applying our system for single-and multi-property visualizations to find some significant ocean water ***,we could obtain a clear visualization result to show the dynamic behaviors of the mixture of water mass for simulation data regarding a location in the northwestern Pacific near Japan.

关键词： Oceanography water mass visualization.

Theory of Planning Physical Environments Incorporating Temporal and Spatial Factors

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Theory of Planning Physical Environments Incorporating Tempo...

Hemorrhagic ovarian cyst without peritoneal bleeding in a patient with ovarian hyperstimulation syndrome: case report

第十届全国建筑物理学术会议

作者： yoichi Ando Kobe University

＜正＞Subjective preference is regarded as a primitive response entailing judgments that steer an organism in the direction of maintaining life to enhance its prospects for *** hemisphere specialization in the human brain may play an important role for the independent effects of temporal and spatial factors on subjective *** scale values of subjective preference of the sound field and the visual field have been described by both temporal and spatial ***,a generalized theory of environmental planning incorporating the temporal and spatial factors associated with the left and right cerebral hemispheres,respectively,is proposed by blending the built environment and *** particular,examples of temporal design associated with the left hemisphere will be demonstrated.

关键词： Theory of subjective preference temporal factors spatial factors Correlation functions and Cerebral hemisphere specialization

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Chinese Medical Journal 2005年第18期118卷 1577-1581页

作者： Hiroko Kurioka Kentaro Takahashi Nobuyuki Kita yoichi Noda Department of General Medicine Shimane Prefectural Central Hospital Izumo JapanDepartment of Obstetrics and Gynecology Shiga University of Medical Science Ohtsu Japan Department of Obstetrics and Gynecology Shiga University of Medical Science Ohtsu Japan Department of Obstetrics and Gynecology Shiga University of Medical Science Ohtsu Japan

Gynecologic and obstetric disorders presenting with abdominal pain are ectopic pregnancy,rupture of endometrial cysts, mature cystic teratoma and torsion of the adnexae. Hemorrhagic ovarian cysts, which included among... 详细信息

关键词： hemorrhagic ovarian cyst·ovarian hyperstimulation syndrome·human menopausal gonadotropin·human chorionic gonadotropin

How have breeders adapted rice flowering to the growing region?

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JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2024年第12期66卷 2736-2753页

作者： Kobayashi, Asako Suganami, Mao Yoshida, Hideki Morinaka, yoichi Watanabe, Syuto Machida, Yoshie Chaya, Genki Nakaoka, Fumihiro Sato, Nobuhito Miura, Kotaro Matsuoka, Makoto Rice Breeding Grp Fukui Agr Expt Stn Fukui 9188215 Japan Fukushima Univ Inst Fermentat Sci Fac Food & Agr Sci Fukushima 9601296 Japan Fukui Prefectural Univ Fac Biotechnol Dept Biosci Fukui 9101195 Japan Fukui Prefectural Govt Fukui 9108580 Japan

Flowering time is a crucial rice trait that influences its adaptation to various environments, cropping schedules, and agronomic characteristics. Rice breeders have exploited spontaneous mutations in heading date genes to regulate the flowering time. In the present study, we investigated how breeders in Fukui Prefecture regulated days to heading while developing promising rice varieties. Genome-wide association studies (GWAS) identified Hd1, Hd16, and Hd18 as the major genes controlling days to heading in the population. However, we suspected that this highly bred population might exhibit genomic stratification, which could lead to spurious or false correlations in the GWAS. Thus, we also conducted correlation and partial correlation analyses, which uncovered another key heading date gene, Hd17, that GWAS failed to detect because of its linkage disequilibrium with the major effect gene Hd16. Examination of haplotype frequencies across different breeding periods revealed that the early-heading Hd16 (Hd16(E)) and late-heading Hd17 (Hd17(L)) were increasingly co-selected in the Hd1 functional population. Varieties carrying this Hd16(E)/Hd17(L) combination exhibited days to heading in the range of 70-80, which corresponds to the peak temperature and sunshine period and is also optimal for grain quality and yield components in the Fukui environment. The present study highlights that it is imperative to remain vigilant for Type I (false positives) and Type II (false negatives) errors when performing GWAS on highly bred populations and to implement appropriate countermeasures by accounting for gene-by-gene interactions established through the breeding process. We also discuss the effectiveness of Hd16(E), which is not used outside Japan for subtle days to heading control but is widely used in Japan at certain latitudes.

关键词： breeding flowering GWAS heading date partial correlation analysis rice

Effect of Pre-Swirling Flow on Performance and Flow Fields in Semi-Opened Axial Fan

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Open Journal of Fluid Dynamics 2023年第2期13卷 113-121页

作者： Norimasa Shiomi Pin Liu yoichi Kinoue Department of Mechanical Engineering Saga University Saga Japan Department of Mechanical Engineering NIT Matsue College Shimane Japan

In this study, we tried to improve the performance by giving a pre-swirling flow to the radial inflow that occurred in the semi-opened axial fan. In addition, the flow fields of rotor outlet were clarified experimentally, and the effect of pre-swirling flow was considered. The experiment was carried out using a performance test wind tunnel with a square cross section of 880 mm. Three types of casings were prepared, in which the blade tip protruded 0%, 20%, and 40% of the meridional chord length. They were called R25, R15, and R05, respectively, in the casing bellmouth model code. Guide blades for generating a pre-swirling flow were installed on the vertical wall surface of the casing. In addition, a vertical wall was installed 60% upstream of the meridional chord length as an obstacle to prevent axial inflow. The velocity fields of the rotor outlet were measured using a hot-wire anemometer. From the results, the pre-swirling flow did not significantly affect the fan performance. When there was no obstacles wall upstream, there was a partial increase in efficiency, but the difference was not so large. When there was an obstacle wall upstream, the efficiency increased overall in the case of R15, but in the case of R05, the efficiency increased only in the low flow rate region, and conversely decreased in the high flow rate region. By observing the blade outlet flow fields when the performance was improved, it was confirmed that the influence of the tip leakage vortex was weakened.

关键词： Axial Fan Semi-Opened Narrow Space Pre-Swirling Flow Fan Performance

WISE Infrared Search for Young Stellar Objects Associated with Starless Cores

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International Journal of Astronomy and Astrophysics 2023年第2期13卷 89-111页

作者： Susumu Sato Yuri Iwamoto yoichi Itoh Nishi-Harima Astronomical Observatory Center for Astronomy University of Hyogo Hyogo Japan

This study presents the results of an infrared search of young stellar objects (YSOs) associated with cores with high optical extinction and no associated infrared IRAS source. Four hundred YSO candidates were identified in the WISE photometric catalog based on the infrared excess attributed to the circumstellar materials and proto-planetary disks. One-hundred and forty-nine cores do not have YSO candidates. Whereas, 32 cores harbor only Class I candidates and 107 cores have Class II candidates. Ninety-one cores that were previously identified as starless cores, were found to contain YSOs. The ratio of the number of starless cores to the number of star-forming cores suggests that the typical timescale from molecular cloud core formation to the birth of a star is in the range of 0.5 - 1.4 Myr.

关键词： Stars: Formation ISM: Clouds Infrared: Stars

Raman spectroscopy for the diagnosis of unlabeled and unstained histopathological tissue specimens

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World Journal of Gastrointestinal Oncology 2018年第11期10卷 439-448页

作者： Haruo Ikeda Hiroaki Ito Muneaki Hikita Noriko Yamaguchi Naoyuki Uragami Noboru Yokoyama Yuko Hirota Miki Kushima yoichi Ajioka Haruhiro Inoue Digestive Disease Center Showa University Koto Toyosu Hospital Department of Surgery Digestive Disease Center Showa University Koto Toyosu Hospital Stem Cell Business Development Department Nikon Corporation Sakae-ku Department of Pathology Showa University Koto Toyosu Hospital Division of Cellular and Molecular Pathology Niigata University Graduate School of Medical and Dental Sciences

AIM To investigate the possibility of diagnosing gastric cancer from an unstained pathological tissue using Raman spectroscopy, and to compare the findings to those obtained with conventional histopathology. METHODS We produced two consecutive tissue specimens from areas with and without cancer lesions in the surgically resected stomach of a patient with gastric cancer. One of the two tissue specimens was stained with hematoxylin and eosin and used as a reference for laser irradiation positioning by the spectroscopic method. The other specimen was left unstained and used for Raman spectroscopy analysis. RESULTS A significant Raman scattering spectrum could be obtained at all measurement points. Raman scattering spectrum intensities of 725 cm^(-1) and 782 cm^(-1), are associated with the nucleotides adenine and cytosine, respectively. The Raman scattering spectrum intensity ratios of 782 cm^(-1)/620 cm^(-1), 782 cm^(-1)/756 cm^(-1), 782 cm^(-1)/1250 cm^(-1), and 782 cm^(-1)/1263 cm^(-1) in the gastric adenocarcinoma tissue were significantly higher than those in the normal stomach *** The results of this preliminary experiment suggest the feasibility of our spectroscopic method as a diagnostic tool for gastric cancer using unstained pathological specimens.

关键词： Label-free analysis Raman spectroscopy Histopathological examination Gastric cancer

Neuroprotective effect of a dietary supplement against glutamate-induced excitotoxicity in retina

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International Journal of Ophthalmology(English edition) 2019年第8期12卷 1231-1237页

作者： Takahiro Kurose Eriko Sugano Akihisa Sugai Raki Shiraiwa Mariyo Kato Yoko Mitsuguchi Yoshihiro Takai Kitako Tabata yoichi Honma Hiroshi Tomita Rohto Pharmaceutical Co. Ltd.6-5-4KunimidaiKizugawaKyoto619-0216Japan Laboratory of Visual Neuroscience Graduate Course inBiological SciencesIwate University Division of Science andEngineering4-3-5UedaMoriokaIwate020-8551Japan Clinical Research Innovation and Education CenterTohokuUniversity Hospital1-1SeiryoAobaSendaiMiyagi980-8574Japan

AIM: To evaluate the neuroprotective effect of a dietary supplement(ClearVision EX~?;CV) against glutamateinduced excitotoxicity in ***: We evaluated the protective effects CV on glutamate-induced cell toxicity of an immortalized mouse hippocampal cell line(HT-22) in vitro and N-methyl-Daspartate(NMDA) induced retinal injury in vivo. Once-daily oral administration of CV or vehicle(5% Arabic gum) was started the day before the NMDA injection and continued until the end of the study. Electroretinograms(ERGs) were recorded to evaluate the retinal function at 2 d after NMDA injection. Furthermore, a histological evaluation, Western blot analysis, and immunohistochemistry were performed for assessing the signal transduction pathway. RESULTS: HT-22 cell death was induced by the addition of glutamate and co-incubation with CV protected against it. Oral administration of CV inhibited the decrease in scotopic threshold response amplitudes induced by the intravitreal injection of NMDA and those of the thickness of the inner retinal layer in the histological evaluation. The increased phosphorylated levels of extracellular signalregulated kinase(ERK) but not cAMP response element binding protein(CREB) or Akt were observed 1 h after NMDA injection in both the vehicle-and CV-treated rats;however, p ERK activation was no more upregulated at 3 h after NMDA injection. pERK upregulation was observed in Müller ***: CV shows a protective effect against both glutamate-induced HT-22 cell death and NMDAinduced retinal damage. pERK upregulation in the Müller cells plays a key role in the protective effect of CV against glutamate-induced retinal toxicity.

关键词： glutamate-induced toxicity retinal ganglion cells HT-22 cells pERK