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Gogny力三维TDHFB理论与240Pu裂变动力学

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科学通报 2020年第21期65卷 2225-2237页

作者：佟亮 Hashimoto yukio 晏世伟北京师范大学物理学系北京100875 Center for Computational Sciences University of TsukubaTsukuba 305-8571Japan

基于Gogny核子-核子有效相互作用,发展了适用于描写原子核裂变过程、不包含任何对称性限制以及三维时间相关的Hartree-Fock-Bogoliubov理论计算程序(Gogny-TDHFB Code for Fission).程序包含静态裂变势能面计算的多维度集体自由度约束HF... 详细信息

基于Gogny核子-核子有效相互作用,发展了适用于描写原子核裂变过程、不包含任何对称性限制以及三维时间相关的Hartree-Fock-Bogoliubov理论计算程序(Gogny-TDHFB Code for Fission).程序包含静态裂变势能面计算的多维度集体自由度约束HFB和裂变动力学计算的TDHFB两部分.在(x,y)方向采用形变谐振子基.在z方向上,为了描述裂变直至断点和断后的极端形变,采用Lagrange mesh方法.利用本程序,对240Pu的裂变势能路径和断点动力学过程进行了计算.结果表明,240Pu存在对称和非对称两条裂变路径;三轴形变可以显著降低第一(内)裂变位垒;对能在断裂过程中起着重要作用.

关键词：核裂变断点动力学时间相关Hartree-Fock-Bogoliubov理论 Gogny核子-核子有效相互作用

Esophagotracheal fistula caused by gastroesophageal reflux 9 years after esophagectomy

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World Journal of Gastroenterology 2007年第5期13卷 801-803页

作者： Kiyotomi Maruyama Satoru Motoyama Manabu Okuyama Yusuke Sato Kaori Hayashi Yoshihiro minamiya Jun-ichi Ogawa Department of Surgery Akita University School of Medicine 1-1-1 Hondo Akita Japan

Fistula between digestive tract and airway is one of the complications after esophagectomy with lymph node dissection. A case of esophagotracheal fistula secondary to esophagitis 9 years after esophagectomy and gastric pull-up for treatment of esophageal carcinoma is described. It was successfully treated with transposition of a pedicled pectoralis major muscle flap.

关键词： Esophagus Fistula Surgery Complications Esophagitis Reflux

A Contribution to Guy's Conjecture

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Acta Mathematica Sinica,English Series 2022年第10期38卷 1856-1886页

作者： yukio MATSUMOTO Yoshikazu MATSUTANI Angel MONTESINOS-AMILIBIA Masami ODA Shuichi OHKI Tsuyoshi SAKAI Department of Mathematics Gakushuin UniversityMejiroToshima-kuTokyo 171-8588Japan 3-21-1-901 Minamimachi KokubunjiTokyo 185-0021Japan Calle Rio Alberche 8.05260 CebrerosSpain Tsuda University 2-1-1Tsuda-choKodairaTokyo 187-8577Japan Tokyo Japanese Language Educational Center 3-22-7Kita ShinjukuShinjuku-kuTokyo 169-0074Japan Department of Mathematics College of Humanities and SciencesNihon UniversitySetagaya-kuTokyo 156-0045Japan

Let Kdenote the complete graph consisting of n vertices,every pair of which forms an *** want to know the least possible number of the intersections,when we draw the graph Kon the plane or on the sphere using continuous arcs for *** a paper published in 1960,Richard *** conjectured that the least possible number of the intersections is 1/64(n-1)^(2)(n-3)^(2) if n is odd,or 1/64 n(n-2)^(2)(n-4)if n is even.A virgin road V_(n)is a drawing of a Hamiltonian cycle in Kconsisting of n vertices and n edges such that no other edge-representing arcs cross V.A drawing of Kis called virginal if it contains a virgin *** drawings considered in this paper will be virginal with respect to a fixed virgin road *** will present a certain drawing of a subgraph of K,for each n(≥5),which is"characteristic"in the sense that any minimal virginal drawing of Kcontaining this subdrawing satisfies Guy’s conjecture.

关键词： Complete graph virginal drawing Guy’s conjecture

The IOD-ENSO precursory teleconnection over the tropical Indo-Pacific Ocean:dynamics and long-term trends under global warming

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Journal of Oceanology and Limnology 2018年第1期36卷 4-19页

作者：袁东亮胡晓悦徐鹏赵霞 yukio MASUMOTO 韩卫清 Key Laboratory of Ocean Circulation and Waves(KLOCW) and Institute of OceanologyChinese Academy of Sciencesand Qingdao National Laboratory for Marine Science and TechnologyQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Qingdao Collaborative Innovation Center of Marine Science and Technology Qingdao 266071China University of Tokyo TokyoJapan Department of Atmospheric and Oceanic Sciences University of ColoradoBoulderColoradoUSA

The dynamics of the teleconnection between the Indian Ocean Dipole(IOD) in the tropical Indian Ocean and El Ni?o-Southern Oscillation(ENSO) in the tropical Pacific Ocean at the time lag of one year are investigated using lag correlations between the oceanic anomalies in the southeastern tropical Indian Ocean in fall and those in the tropical Indo-Pacific Ocean in the following winter-fall seasons in the observations and in high-resolution global ocean model simulations. The lag correlations suggest that the IOD-forced interannual transport anomalies of the Indonesian Throughflow generate thermocline anomalies in the western equatorial Pacific Ocean, which propagate to the east to induce ocean-atmosphere coupled evolution leading to ENSO. In comparison, lag correlations between the surface zonal wind anomalies over the western equatorial Pacific in fall and the Indo-Pacific oceanic anomalies at time lags longer than a season are all insignificant, suggesting the short memory of the atmospheric bridge. A linear continuously stratified model is used to investigate the dynamics of the oceanic connection between the tropical Indian and Pacific Oceans. The experiments suggest that interannual equatorial Kelvin waves from the Indian Ocean propagate into the equatorial Pacific Ocean through the Makassar Strait and the eastern Indonesian seas with a penetration rate of about 10%–15% depending on the baroclinic modes. The IOD-ENSO teleconnection is found to get stronger in the past century or so. Diagnoses of the CMIP5 model simulations suggest that the increased teleconnection is associated with decreased Indonesian Throughflow transports in the recent century, which is found sensitive to the global warming *** dynamics of the teleconnection between the Indian Ocean Dipole(IOD)in the tropical Indian Ocean and El Ni?o-Southern Oscillation(ENSO)in the tropical Pacific Ocean at the time lag of one year are investigated using lag correlations between the oceanic anomalie

关键词： Indian Ocean Dipole(IOD) El Nino-Southern Oscillation(ENSO) oceanic channel Indonesian Throughflow ENSO predictability

Formation of City-Lake Integrated Urban Morphology in Hangzhou: A Study on the Related History Starting from the New Market Plan of the Lakefront District in Early Modern Times

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China City Planning Review 2015年第2期24卷 64-73页

作者： Fu Shulan yukio Nishimura Qian Fang Department of Regional and Urban Planning College of Civil Engineering and ArchitectureZhejiang University Research Center for Advanced Science and Technology The University of Tokyo ICOMOS Japan

In the early modern times in China, local planners have made several construction plans for Hangzhou's old city center and the West Lake, resulting in the gradual formation of a city-lake integrated urban form, which is valued nowadays for its uniqueness and characteristically Chinese cityscape aesthetics. The key plan that spurred this process of linking the old city with the West Lake was a plan titled "Building a New Market"(1914). By elucidating the time, process, and contents of the plan, this paper analyzes the spatial transformation of the lakefront districts based on old maps, and then interprets how it led the forming process of the "city-lake integrated" urban form in Hangzhou.

关键词： New Market Plan Hangzhou modern times lakefront di

Vitamin D and calcium are required at the time of denosumab administration during osteoporosis treatment

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Bone Research 2017年第4期5卷 384-390页

作者： yukio Nakamura Takako Suzuki Mikio Kamimura Kohei Murakami Shota Ikegami Shigeharu Uchiyama Hiroyuki Kato Department of Orthopedic Surgery Shinshu University School of MedicineMatsumotoJapan Department of Orthopedic Surgery Showa-lnan General HospitalKornaganeJapan Center of Osteoporosis and Spinal Disorders Kamimura Orthopaedic ClinicMatsumotoJapan

To evaluate the differences in outcomes of treatment with denosumab alone or denosumab combined with vitamin D and calcium supplementation in patients with primary osteoporosis. Patients were split into a denosumab monotherapy group （18 cases） or a denosumab plus vitamin D supplementation group （combination group; 23 cases）. We measured serum bone alkaline phosphatase （BAP）, tartrate-resistant acid phosphatase （TRACP）-5b and urinary N-terminal telopeptide of type-I collagen （NTX） at baseline, 1 week, as well as at I month and 2, 4, 8 and 12 months. We also measured bone mineral density （BMD） of L1-4 lumbar vertebrae （L）-BMD and bilateral hips （H）-BMD at baseline and at 4, 8 and 12 months. There was no significant difference in patient background. TRACP-5b and urinary NTX were significantly suppressed in both groups from I week to 12 months （except at 12 months for NTX）. In the combination group, TRACP-5b was significantly decreased compared with the denosumab monotherapy group at 2 and 4 months （P 〈 0.05）. BAP was significantly suppressed in both groups at 2-12 months. L-BMD significantly increased at 8 and 12 months （8.9%） in the combination group and at 4, 8 and 12 months （6.0%） in the denosumab monotherapy group, compared with those before treatment. H-BMD was significantly increased in the combination group （3.6%） compared with the denosumab group （1.2%） at 12 months （P 〈 0.05）. Compared with denosumab monotherapy, combination therapy of denosumab with vitamin D and calcium stopped the decrease in calcium caused by denosumab, inhibited bone metabolism to a greater extent, and increased BMD （especially at the hips）.

关键词： BMD TRACP Vitamin D and calcium are required at the time of denosumab administration during osteoporosis treatment NTX

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柱面壳体表面风压分布特性风洞试验研究

同济大学学报（自然科学版） 2006年第11期34卷 1457-1463页

作者：李元齐 Tamura yukio 沈祖炎同济大学建筑工程系上海200092 东京工艺大学风工程研究中心

基于刚性模型的风洞试验,在不同风攻角及场地条件下,对考虑不同长跨比的柱面壳体表面风压分布进行了同步测量.根据测量结果对壳体表面风压场特性进行了分析,包括风压系数、整体风力系数、脉动风压自功率谱及互功率谱、风压场本征正交分... 详细信息

基于刚性模型的风洞试验,在不同风攻角及场地条件下,对考虑不同长跨比的柱面壳体表面风压分布进行了同步测量.根据测量结果对壳体表面风压场特性进行了分析,包括风压系数、整体风力系数、脉动风压自功率谱及互功率谱、风压场本征正交分解特性、雷诺数对壳体表面风压分布的影响等.结果表明,此类曲面模型表面风压分布受雷诺数影响明显,且模型曲面特性使得风场本征正交分解的前几阶特征模态对整个风压分布的贡献增大.

关键词：柱面壳体风洞试验风压系数本征正交分解

Effect of intermetallic compounds on the fracture behavior of dissimilar friction stir welding joints of Mg and Al alloys

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International Journal of Minerals,Metallurgy and Materials 2019年第10期26卷 1285-1298页

作者： Amir Hossein Baghdadi Zainuddin Sajuri Nor Fazilah Mohamad Selamat Mohd Zaidi Omar yukio Miyashita Amir Hossein Kokabi Centre for Materials Engineering and Smart Manufacturing Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 UKM BangiSelangor 43600Malaysia Department of Mechanical Engineering Nagaoka University of TechnologyNagaoka940-2188Japan Department of Materials Science and Engineering Sharif University of TechnologyTehran 11365-11155Iran

Joining Mg to Al is challenging because of the deterioration of mechanical properties caused by the formation of intermetallic compounds(IMCs) at the Mg/Al interface. This study aims to improve the mechanical properties of welded samples by preventing the fracture location at the Mg/Al interface. Friction stir welding was performed to join Mg to Al at different rotational and travel speeds. The microstructure of the welded samples showed the IMCs layers containing Al12Mg17(γ) and Al3Mg2(β) at the welding zone with a thickness(< 3.5 μm). Mechanical properties were mainly affected by the thickness of the IMCs, which was governed by welding parameters. The highest tensile strength was obtained at 600 r/min and 40 mm/min with a welding efficiency of 80%. The specimens could fracture along the boundary at the thermo-mechanically affected zone in the Mg side of the welded joint.

关键词： aluminum alloy magnesium alloy intermetallic compounds dissimilar welded joint friction stir welding

Neuroendocrine carcinoma of the extrahepatic bile duct: A case report

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World Journal of Gastroenterology 2016年第30期22卷 6960-6964页

作者： yukio Oshiro Ryozo Gen Shinji Hashimoto Tatsuya Oda Taiki Sato Nobuhiro Ohkohchi Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery Faculty of Medicine University of Tsukuba Department of Pathology Faculty of MedicineUniversity of Tsukuba

Neuroendocrine carcinoma(NEC) originating from the gastrointestinal hepatobiliary-pancreas is a rare, invasive, and progressive disease, for which the prognosis is extremely poor. The patient was a 72-year-old man referred with complaints of jaundice. He was diagnosed with middle extrahepatic cholangiocarcinoma(cT 4N1M0, c Stage Ⅳ). He underwent a right hepatectomy combined with extrahepatic bile duct and portal vein resection after percutaneous transhepatic portal vein embolization. Microscopic examination showed a large-cell neuroendocrine carcinoma according to the WHO criteria for the clinicopathologic classification of gastroenteropancreatic neuroendocrine tumors. Currently, the patient is receiving combination chemotherapy with cisplatin and etoposide for postoperative multiple liver metastases. Although NEC is difficult to diagnose preoperatively, it should be considered an uncommon alternative diagnosis.

关键词： Neuroendocrine carcinoma Extrahepatic bile duct Neuroendocrine tumor