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1-25 Fractional Skyrmions and Their Molecules

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IMP & HIRFL Annual Report 2015年第1期 36-36页

作者： Sven Bjarke Gudnason muneto nitta 不详

We study a Skyrme-type model with a quadratic potential for a field with S2 vacua. The model contains molecules of half Skyrmions, each of them is a global (anti-)monopole with baryon number 1=2. We numerically construct solutions with baryon numbers one through six, and find stable solutions which look like beads on rings. We also construct a molecule with fractional Skyrmions having the baryon numbers 1=3+2=3, by adding a linear potential term.

关键词： Fractional Skyrmions Their Molecules

1-26 Gravitating BPS Skyrmions

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IMP & HIRFL Annual Report 2015年第1期 37-37页

作者： Sven Bjarke Gudnason muneto nitta Nobuyuki Sawado 不详

The BPS Skyrme model has many exact analytic solutions in flat space. We generalize the model to a curved space or spacetime and find that the solutions can only be BPS for a constant time-time component of the metric tensor. We find exact solutions on the curved spaces: a 3-sphere and a 3-hyperboloid; and we further find an analytic gravitating Skyrmion on the 3-sphere. For the case of a nontrivial time-time component of the metric, we suggest a potential for which we find analytic solutions on anti-de Sitter and de Sitter spacetimes in the limit of no gravitational backreaction. We take the gravitational coupling into account in numerical solutions and show that they are well approximated by the analytic solutions for weak gravitational coupling.

关键词： Gravitating BPS Skyrmions

EXPERIMENTAL ANIMAL TUMOR IMMUNOTHERAPY WITH BACTERIAL POLYSACCHARIDE

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中华医学杂志(英文版) 1981年第6期94卷 375-378页

作者：赵家琪 Kazuo nitta 新田和男 On leave from Immunology Section Dongzhimen HospitalBeijing. Chemotherapy Division National Cancer Center Research InstituteTokyo

A carboxymethyl-polysaccharide of bacterialorigin,CM-TAK,exhibits very strong antitumoractivity in a subcutaneous sarcoma 180(S180)sclid tumor,when intraperitoneally injected at20 mg/kg/day every other day,starting on day1 and totalling up to 5 times or by 1 shotcf 100 mg/kg either on day 1,day 7 or day *** ratios of tumor growth are nearly100% by any mode of injection *** manymice,tumors completely disappear after treat-ment with CM-TAK.

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Time to take another Iook at perceived disadvantages of robotic hepatectomy

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Hepatobiliary Surgery and Nutrition 2020年第2期9卷 208-210页

作者： Yasushi Hasegawa Hiroyuki nitta Takeshi Takahara Akira Sasaki Department of Surgery Iwate Medical University School of MedicineMorioka CityIwateJapan

Robotic hepatectomy remains controversial to date,despite continuous advances in the technology and more surgeons gaining experience with the *** et al.(1)recently published an interesting article in Hepatobiliary Surgery and Nutrition,titled"Selecting incision-dominant cases for robotic liver resection:towards outpatient hepatectomy with rapid recovery."The authors evaluated 97 cases of robotically-assisted liver resection(RLR)arguing that it is difficult to reach the superior-posterior liver segments with the straight instruments used in conventional laparoscopic liver resection(LLR).The articulated instruments of the surgical robot are better suited for hepatectomies in these difficult-to-reach areas of the *** concluded that cases where the incision of an open approach would be large and affect recovery results in the highest likelihood of patients benefitting from a robotic *** think that the authors present an interesting perspective by focusing on the strong points of RLR compared to LLR.

关键词： hepatectomy Surgery straight

A case of diffuse alveolar hemorrhage following synthetic cathinone inhalation

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World Journal of Emergency Medicine 2020年第3期11卷 182-184页

作者： Masakazu nitta Taro Tamakawa Natsuo Kamimura Tadayuki Honda Hiroshi Endoh Advanced Emergency and Critical Care Center Niigata University Medical and Dental HospitalChuo-kuNiigataJapan

Dear editor,Diffuse alveolar hemorrhage(DAH)sometimes causes a life-threatening condition;thus,prompt diagnosis and treatment for DAH is ***,a variety of diseases(e.g.,systemic autoimmune diseases,infectious diseases,drugs)are associated with the development of DAH,which occasionally causes diffi culty with identifying the specifi c etiology.

关键词： alveolar diseases diagnosis

Phenolic rigid organic filler/isotactic polypropylene ***

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Frontiers of Chemical Science and Engineering 2008年第3期2卷 236-241页

作者： Dongming QI Lei YANG Minghua WU Heming LIN Kohhei nitta Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018China Graduate School of Natural Science&Technology Kanazawa UniversityKanazawaIshikawa920-1192Japan

A novel phenolic rigid organic filler(KT)was melt-mixed with an isotactic polypropylene(iPP)to prepare a series of PP/KT composites,with or without maleic anhydride grafted polypropylene(MAPP)as *** evolution of filler morphology during melt-mixing and melt-pressure processes was monitored by scanning electron microscope(SEM)and polarized optical microscope(POM).The influences of shear force,pressure time,filler content and MAPP concentration on the final filler dispersion were *** found that this rigid organic filler readily melted and dispersed homogenously into the iPP matrix through a fission-fusion process during the melt-mixing *** a balanced dispersion,which was closely related to shear force and MAPP concentration,can be *** the meltpressure process,parts of the filler particles combined gradually through a coalescence ***,the incorporation of MAPP can effectively inhibit the tendency to coalesce and refine the filler particles sizes into ***,a series of PP/KT composites with controllable filler particles size and narrow size distribution can be obtained just by adjusting process conditions and MAPP *** addition,due to the in-situ formation mechanism,the filler phase possessed a typical solid true-spherical shape.

关键词： rigid organic filler polypropylene dispersion in-situ formation

Adaptive-sampling near-Doppler-limited terahertz dual-comb spectroscopy with a free-running single-cavity fiber laser

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Advanced Photonics 2020年第3期2卷 50-60页

作者： Jie Chen Kazuki nitta Xin Zhao Takahiko Mizuno TakeoMinamikawa Francis Hindle Zheng Zheng Takeshi Yasui Beihang University School of Electronic and Information EngineeringBeijingChina Tokushima University Graduate School of Advanced Technology and ScienceTokushimaJapan JST ERATO MINOSHIMA Intelligent Optical SynthesizerTokushimaJapan Tokushima University Institute of Post-LED PhotonicsTokushimaJapan Tokushima University Graduate School of TechnologyIndustrial and Social SciencesTokushimaJapan Tokushima University Research Cluster on“Multi-scale VibrationalMicroscopy forComprehensive Diagnosis and Treatment of Cancer”TokushimaJapan Universitédu Littoral Côte d’Opale Laboratoire de Physico-Chimie de l’AtmosphèreDunkerqueFrance Beihang University Beijing Advanced Innovation Center for Big Data-based Precision MedicineBeijingChina

Dual-comb spectroscopy(DCS)is an emerging spectroscopic tool with the potential to simultaneously achieve a broad spectral coverage and ultrahigh spectral resolution with rapid data ***,the need for two independently stabilized ultrafast lasers significantly hampers the potential application of *** demonstrate mode-resolved DCS in the THz region based on a free-running singlecavity dual-comb fiber laser with the adaptive sampling *** the use of a free-running single-cavity dual-comb fiber laser eliminates the need for two mode-locked lasers and their frequency control,the adaptive sampling method strongly prevents the degradation of spectroscopic performance caused by the residual timing jitter in the free-running dual-comb ***-limit-approaching absorption features with linewidths down to 25 MHz are investigated for low-pressure acetonitrile/air mixed gas by comb-mode-resolved THz *** successful demonstration clearly indicates its great potential for the realization of lowcomplexity,Doppler-limited THz spectroscopy instrumentation.

关键词： optical comb terahertz dual-comb spectroscopy molecular spectroscopy

Establishment and characterization of an opisthorchiasis-associated cholangiocarcinoma cell line (KKU-100)

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World Journal of Gastroenterology 2005年第22期11卷 3392-3397页

作者： Banchob Sripa Saman Leungwattanawanit Takayuki nitta Chaisiri Wongkham Vajarabhongsa Bhudhisawasdi Anucha Puapairoj Chongrak Sripa Masanao Miwa Department of Pathology Faculty of Medicine Khon Kaen University Khon Kaen 40002 Thailand Liver Fluke and Cholangiocarcinoma Research Center Khon Kaen University Khon Kaen 40002 Thailand Department of Pathology Faculty of Medicine Khon Kaen University Khon Kaen 40002 Thailand Institute of Basic Medical Science University of Tsukuba Ibaraki 305-8575 Tsukuba Japan Department of Biochemistry Faculty of Medicine Khon Kaen University Khon Kaen 40002 Thailand Liver Fluke and Cholangiocarcinoma Research Center Khon Kaen University Khon Kaen 40002 Thailand Department of Surgery Faculty of Medicine Khon Kaen University Khon Kaen 40002 Thailand Liver Fluke and Cholangiocarcinoma Research Center Khon Kaen University Khon Kaen 40002 Thailand Department of Pathology Faculty of Medicine Khon Kaen University Khon Kaen 40002 Thailand Puapairoj Liver Fluke and Cholangiocarcinoma Research Center Khon Kaen University Khon Kaen 40002 Thailand

AM: To establish and characterize a new cholangiocarcinoma cell line from a patient living in the Opisthorchis viverrini (O. viverrini) endemic area of Northeast Thailand. METHODS: Fresh liver biopsy and bile specimens were obtained from a 65-year-old Thai woman with cholangiocarcinoma of the ports hepatis. After digestion, the cells were cultured in Ham's F12 media. The established cell line was then characterized for growth kinetics, cell morphology, imm-unocytochemistry and cytogenetics. Tumorigenicity of the cell line was determined by heterotransplanting in nude mice. RESULTS: The primary tumor was a poorly differentiated tubular adenocarcinoma. Examination of the bile revealed malignant cells with O. viverrin eggs. The cholangiocarcinoma cell line KKU-100 was established 4 mo after the primary culture-population doubling time was 72 h. KKU-100 possesses compact and polygonal-shaped epithelial cells. Immunocytochemically, this cell line exhibited cytokeratin, EMA, CEA, and CA125, but not a-fetoprotein (AFP), CA19-9, desmin, c-met, or p53. Such protein expressions parallel those of the primary tumor. Cytogenetic analysis identified aneuploidy karyotypes with a modal chromosome number of 78 and marked chromosomal structural changes. Inoculation of KKU-100 cells into nude mice produced a transplantable, poorly differentiated aden-ocarcinoma, similar to the original tumor. CONCLUSION: KKU-100 is the first egg-proven, Opisthorchis- associated cholangiocarcinoma cell line, which should prove useful for further investigations of the tumor biology of this cancer.

关键词： Cholangiocarcinoma Cell line Establishment Characterization Opisthorchiasis

Learning Dynamics of the Complex-Valued Neural Network in the Neighborhood of Singular Points

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Journal of Computer and Communications 2014年第1期2卷 27-32页

作者： Tohru nitta National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Japan

In this paper, the singularity and its effect on learning dynamics in the complex-valued neural network are elucidated. It has learned that the linear combination structure in the updating rule of the complex-valued neural network increases the speed of moving away from the singular points, and the complex-valued neural network cannot be easily influenced by the singular points, whereas the learning of the usual real-valued neural network can be attracted in the neighborhood of singular points, which causes a standstill in learning. Simulation results on the learning dynamics of the three-layered real-valued and complex-valued neural networks in the neighborhood of singularities support the analytical results.

关键词： Complex-Valued Neural Network Complex Number Learning Singular Point