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The Mechanism of Flow Field around a Rotating Cylinder with Fins for High Performance Magnus Wind Turbine

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Journal of Energy and Power Engineering 2016年第1期10卷 23-31页

作者： Nobuhiro Murakami hiroaki hasegawa Toshihiro Haniu Masahide Nakamura Dept. of Mechanical Engineering Tegatagakuen-machi 1-1 Graduate School of Engineering & Resource Science Akita Univ.Akita 010-8502 Japan Dept. of Mechanical and Intelligent Engineering Yoto Graduate School of Engineering Utsunomiya Univ. Utsunomiya-shi 7-1-2 Japan

Spiral Magnus is a unique wind turbine system that rotates with cylinders which have spiral-shaped fins coiled around them （instead of using the more common propeller-type blades）. In the present study, three models （cylinder with no fins, cylinder with straight fins and cylinder with spiral fins） were installed, and fluid force measurements were performed by a strain gauge force balance. A PIV （particle image velocimetry） system was used to better understand the flow fields around the cylinder. Considering the results of the experiment, it was confirmed that, the aerodynamic performance of the rotating cylinder can be improved by the fin. However, the straight fin makes the flow close to the cylinder surface ineffective. The rotary cylinder with the spiral fins was able to generate the greatest lift among three models, because the spiral fin effectively influences the vicinity of the cylinder surface.

关键词： Wind turbine Magnus effect wind tunnel test spiral Magnus.

Laser speckle flowgraphy findings in a patient with radiation retinopathy

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International Journal of Ophthalmology(English edition) 2022年第1期15卷 172-174页

作者： Satoru Kase Ayaka hasegawa Kiriko Hirooka hiroaki Endo Kousuke Noda Susumu Ishida Department of Ophthalmology Faculty of Medicine and Graduate School of MedicineHokkaido UniversitySapporo 060-8638Japan Department of Ophthalmology Teine Keijinkai HospitalSapporo 006-0811Japan

Dear Editor,I am Satoru Kase, from Hokkaido University Hospital, Japan. Choroidal melanoma is a serious intraocular tumor, which threatens patients’ vision and life. Treatments for choroidal melanoma consist of surge... 详细信息

关键词： melanoma surgery intraocular

Measurement Techniques for Distribution Line Impedance by Minimum Pulse Injection

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Journal of Energy and Power Engineering 2013年第10期7卷 1998-2005页

作者： Iida Kouji Nakashima hiroaki Keiju Matsui hasegawa Masaru Ueda Fukashi Department of Electrical Engineering Chubu University Matsumoto-cho Kasugai City Aichi 487-8501 Japan Chubu Electric Power Co. Inc. Ootaka-cho Midori-ku Nagoya-city Aichi 459-8522 Japan

With a live wire, line impedance could be measured by means of only passive elements such as inductors or resistors, whose techniques are well known. However, as the voltage and current used for the measurement are increased, the size of the inductor or resistor being used also needs to be increased, so it would be virtually impossible to make an accurate measurement. Because of this, the authors have developed a novel measurement method for line impedance using LC resonance, which the authors describe first place. In the second place, the authors propose another line impedance. The novel method is that the rectangular wave with minimum voltage is injected into the distribution line system. By means of this method, the line capacitance and the line inductance can be measured. These proposals are confirmed by the simulation or experiment. Finally, the frequency response analysis method is to be examined, whose mechanism and results are to be presented and discussed.

关键词： Line impedance distribution system line capacitance LC resonance pulse injection.

Optical Sum Frequency Generation Spectroscopy of Cracked Non-Glutinous Rice (Oryza sativa L.) Kernels

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Journal of Biomaterials and Nanobiotechnology 2016年第1期7卷 13-18页

作者： Wataru Kouyama Takahiro Nishida Khuat Thi Thu Hien Goro Mizutani Hiroshi hasegawa hiroaki Miyamura School of Materials Science Japan Advanced Institute of Science and Technology Nomi Japan School of Environmental Science University of Shiga Prefecture Hikone Japan Shiga Prefecture Agricultural Technology Promotion Center Omihachiman Japan

In order to study the correlation between the cracking of rice (Oryza sativa L.) kernels and the molecular structure of the amylopectin in them, we attempted optical sum frequency generation (SFG) spectroscopy in the C-H stretching vibration region for normal and cracked japonica non-glutinous rice kernels. The samples were Koshihikari and Nipponbare. In Nipponbare, the width of the SFG spectrum peak at 2915 cm- 1 of the cracked rice kernels was broader than that of the normal ones, while for Koshihikari there was no clear difference. The width of the 2915 cm- 1 peak is suggested to originate from the variety of the higher-order structure of the saccharide chains in amylopectin. Although this is a tentative result, this method is shown to have a potential of serving for preventing the cracking of the rice kernels.

关键词： Rice Kernels Cracking in Hot Weather Optical Sum Frequency Generation (SFG) Amylopectin Non-Glutinous Rice

Alterations in the human epidermal growth factor receptor 2-phosphatidylinositol 3-kinase-v-Akt pathway in gastric cancer

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World Journal of Gastroenterology 2012年第45期18卷 6577-6586页

作者： Yasutaka Sukawa Hiroyuki Yamamoto Katsuhiko Nosho hiroaki Kunimoto Hiromu Suzuki Yasushi Adachi Mayumi Nakazawa Takayuki Nobuoka Mariko Kawayama Masashi Mikami Takashi Matsuno Tadashi hasegawa Koichi Hirata Kohzoh Imai Yasuhisa Shinomura First Department of Internal Medicine Sapporo Medical University School of MedicineSapporo 60-8543Japan Department of Molecular Biology Sapporo Medical University School of MedicineSapporo 60-8543Japan First Department of Surgery Sapporo Medical University School of MedicineSapporo 60-8543Japan Department of Gastroenterology JR Sapporo HospitalSapporo 60-8543Japan Department of Surgery Sapporo Gekakinen HospitalSapporo 60-8543Japan Department of Surgical Pathology Sapporo Medical University HospitalSapporo 60-8543Japan Division of Cancer Research The Institute of Medical ScienceThe University of TokyoTokyo 108-8639Japan

AIM:To investigate human epidermal growth factor receptor 2(HER2)-phosphatidylinositol 3-kinase(PI3K)-vAkt murine thymoma viral oncogene homolog signaling ***:We analyzed 231 formalin-fixed,paraffinembedded gastric cancer tissue specimens from Japanese patients who had undergone surgical *** patients' age,sex,tumor location,depth of invasion,pathological type,lymph node metastasis,and pathological stage were determined by a review of the medical *** of HER2 was analyzed by immunohistochemistry(IHC) using the HercepTest TM *** criteria for HER2 positivity(0,1+,2+,and 3+) were *** that scored 3+ were considered *** of phospho Akt(pAkt) was also analyzed by *** were considered pAkt-positive when the percentage of positive tumor cells was 10% or ***3K,catalytic,alpha polypeptide(PIK3CA) mutations in exons 1,9 and 20 were analyzed by ***-Barr virus(EBV) infection was analyzed by in situ hybridization targeting EBV-encoded small RNA(EBER) with an EBER-RNA *** instability(MSI) was analyzed by polymerase chain reaction using the mononucleotide markers BAT25 and ***:HER2 expression levels of 0,1+,2+ and 3+ were found in 167(72%),32(14%),12(5%) and 20(8.7%) samples,***2 overexpression(IHC 3+) significantly correlated with intestinal histological type(15/20 vs 98 /205,P = 0.05).PIK3CA mutations were present in 20 cases(8.7%) and significantly correlated with MSI(10/20 vs 9/211,P < 0.01).The mutation frequency was high(21%) in T4 cancers and very low(6%) in T2 *** in exons 1,9 and 20 were detected in 5(2%),9(4%) and 7(3%) cases,*** new types of PIK3CA mutation,R88Q and R108H,were found in *** PIK3CA mutations were heterozygous missense singlebase substitutions,the most common being H1047R(6/20,30%) in *** cancers(8%) were EBV-positive and this positivity significantly correlated with a diffu

关键词： Human epidermal growth factor receptor 2 Phosphatidylinositol 3-kinase Catalytic Alpha polypep-tide Epstein-Barr virus Aid: Gastric cancer