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Esophageal early basaloid squamous carcinoma with unusual narrowband imaging magnified endoscopy findings

World Journal of Gastroenterology 2014年第35期20卷 12673-12677页

作者： Yugo Kai Motohiko kato Yoshito Hayashi Tomofumi Akasaka Shinichiro Shinzaki Tsutomu Nishida Masahiko Tsujii Eiichi Morii tetsuo Takehara Department of Gastroenterology and Hepatology Osaka University Graduate School of Medicine Department of Diagnostic Pathology Osaka University Hospital

Basaloid squamous carcinoma (BSC) is a rare variant of esophageal cancer. There are very few reports of “early” BSC. Here we report a case of early BSC with unusual findings by narrowband imaging magnified endoscopy (NBI-ME). A 70-year-old man with a middle thoracic esophageal tumor was referred to our hospital. White-light endoscopy revealed a reddish depressed lesion 5 mm in diameter having a subepithelial tumor-like prominence with a gentle rising slope. NBI-ME revealed irregular loop-shaped microvessels coexistent with thick irregularly branched non-looped vessels. Iodine staining revealed a pale brown lesion. We performed endoscopic submucosal dissection for diagnostic treatment. Histologic examination showed the proliferation of basal cell-like hyperchromatic tumor cells in the lamina propria and with slight invasion into the submucosa at a depth of 320 μm. The tumor cells formed solid nests and microcystic structures, containing an Alcian blue-positive mucoid matrix. The surface was covered with squamous epithelium without cellular atypia. Thin vessels were observed in the intra-epithelial papilla and thick vessels were observed around the solid nests beneath the epithelium. Based on these findings together, we diagnosed the lesion as BSC. In this case, the NBI-ME findings differed from those of typical squamous cell carcinoma in that both non-invasive cancer-like irregular loop-shaped microvessels coexisted with massively invasive cancer-like thick non-looped vessels. We speculate that the looped and non-looped vessels observed by NBI-ME histologically corresponded to thin vessels in the intra-epithelial papilla and thick vessels around the tumor nests, respectively. These NBI-ME findings might be a feature of early esophageal BSC.

关键词： Basaloid squamous carcinoma Narrowband imaging Esophagus Endoscopic submucosal dissection

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In-Situ Observation of SiC Bulk Single Crystal Growth by XRD System

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Journal of Rare Earths 2006年第Z1期24卷 49-53页

作者： Tomohisa kato National Institute of Advanced Industrial Science and Technology Tsukuba Central Ibaraki 305-8568 Japan

In-situ analysis for SiC bulk single crystal growth was reported using vertical X-ray diffractometer system. A furnace for SiC sublimation growth combined with the XRD system which possessed three kinds of functions including topography, rocking curve measurement and crystal growth rate monitoring was developed. These functions could contribute as a powerful tool finding the optimum growth condition by dynamic observation in the crucible. In this study, the in-situ X-ray topographs succeeded to capture dynamic elongation of defects and dislocation generated in the SiC growing crystals. The in-situ rocking curve measurement reviled appearance of mosaic structure in the SiC crystal grown with high growth rate. The in-situ growth rate monitoring also succeeded very precisely using the direct X-ray beam absorption. On the base of findings and facts obtained by the in-situ observations, the importance for the SiC growth was discussed.

关键词： Defect Growth from vapor Semiconducting materials Single crystal growth X-ray diffraction X-ray topography

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Effects of hydraulic oil and lubricant additives on dynamic friction properties under various reciprocating sliding conditions

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Friction 2020年第2期8卷 471-480页

作者： Shinji kato Shinya SASAKI Engineering Headquarters Automotive ComponentsKYB Corporation2548DolaKani-shiGifu 509-0298Japan Department of Mechanical Engineering Faculty of Engineering Division ITokyo University of Science6-3-1NiijukuKatsushika-kuTokyo 125-8585Japan

The friction characteristics of a shock absorber are very complex because the reciprocating motion is not always *** this study,a device was developed and used to analyze the dynamic friction characteristics under various reciprocating sliding conditions to determine the sliding materials and hydraulic oils that improve the shock absorber *** study describes the influence of hydraulic oil additive on the fine reciprocating friction characteristics of steel and copper *** oils were prepared by blending a paraffinic mineral oil with zinc dithiophosphate(ZnDTP)and polyhydric alcohol ester as *** results show that the dynamic frictional characteristics vary mainly depending on the additive concentration.A specific additive formulation induces a unique amplitude-dependent friction *** addition,the influence of different additives on the lubrication mechanism is investigated based on the instrumental analysis of the friction surface.

关键词： shock absorber dynamic friction reciprocating friction additive zinc dithiophosphate(ZnDTP)

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Adult T-cell leukemia/lymphoma presenting multiple lymphomatous polyposis

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World Journal of Gastroenterology 2008年第42期14卷 6584-6588页

作者： Akira Hokama Takeaki Tomoyose Yu-ichi Yamamoto Takako Watanabe tetsuo Hirata Fukunori Kinjo Seiya kato Koichi Ohshima Hiroshi Uezato Nobuyuki Takasu Jiro Fujita Department of Medicine and Therapeutics (First Department of Internal Medicine) Control and Prevention of Infectious Disease Faculty of Medicine University of the Ryukyus Okinawa 903-0125 Japan Department of Endocrinology and Metabolism Faculty of Medicine University of the Ryukyus Okinawa 903-0215 Japan Department of Dermatology Faculty of Medicine University of the Ryukyus Okinawa 903-0215 Japan Department of Endoscopy Ryukyu University Hospital Okinawa 903-0215 Japan Division of Pathology and Cell Biology GraduateSchool and Faculty of Medicine University of the RyukyusOkinawa 903-0215 Japan Department of Pathology School of Medicine Kurume University Fukuoka 830-0011 Japan

Multiple lymphomatous polyposis (MLP) is an unusual form of non-Hodgkin's lymphoma characterized by polyps throughout the gastrointestinal tract. It has been reported that most MLP are observed in cases with mantle cell lymphoma of B-cell type. We herein present a case of a 66-year-old man with adult T-cell leukemia/lymphoma (ATLL). Colonoscopy revealed MLP throughout the colon and histopathological findings of ATLL cell infiltration. The patient died despite combination of chemotherapy. The literature of manifestations of colonic involvement of ATLL isreviewed and the importance of endoscopic evaluation to differentiate ATLL intestinal lesions from opportunistic infectious enterocolitis is discussed.

关键词： Adult T-cell leukemia/lymphoma Multiplelymphomatous polyposis Human T-cell lymphotropicvirus type 1 Strongyloides stercora/is Colonoscopy

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GPS monitoring of temporal deformation of the Xianshuihe fault

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Science China Earth Sciences 2008年第9期51卷 1259-1266页

作者： TERUYUKI kato Earthquake Research Institute University of TokyoTokyo Japan

Highly precise (σ ~1 mm) temporal deformation measurements are taken across the Xianshuihe fault from two pairs of continuous GPS stations straddling the fault. Baseline vector changes of the two pairs of stations show clearly the difference in deformation behavior between the Qianning and Daofu segments of the fault: the former deforms steadily, and the latter deforms with a strong transient component. The transient deformation across the Daofu segment is possibly related to its irregular geometry, where the fault splits into two branches, that is, the east and west branches. An attempt is made to interpret the baseline vector changes using a kinematic fault model composed of a brittle layer in the upper crust, a ductile layer in the lower crust, and a transition zone in between. The slip in the transition zone of the south segment of the Xianshuihe fault is steady. The slips in the transition zones of the north and Daofu segments of the Xianshuihe fault, however, are not steady, and the average slip rates there are higher than that of the south segment. The difference in deformation behavior is probably associated with the rheological properties of the fault interface, suggesting that the overall fault strength of the south segment is greater than those of the north and Daofu segments, corresponding to longer earthquake recurrence time.

关键词： Xianshuihe fault GPS deformation field temporal change brittle-ductile transition zone

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Fast and robust training of a probabilistic latent semantic analysis model by the parallel learning and data segmentation

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通讯和计算机（中英文版） 2009年第5期6卷 28-35页

作者： Masaharu kato tetsuo Kosaka Akinori Ito Shozo Makino Graduate School of Science and Technology Yamagata University Yonezawa 992-8510 Japan Graduate School of Engineering Tohoku University Sendal 980-8579 Japan

Probabilistic Latent Semantic Analysis (PLSA) is proven to be effective in the information retrieval and the speech recognition technique. In this paper, we modify the calculation procedure of estimation algorithm. It substantially reduces the memory requirements. And, parallelization approach enables making models in less time. Next, we examined data segmentation for PLSA adaptation. Most meetings have a number of topics. We divide the meeting automatically and fit PLSA models with them. The experiment showed recognition performance improvement.

关键词： LAM MIP PLSA 计算机通讯

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ON CORRELATION OF CAVITATION EROSION AND NOISE ON A FOIL SECTION

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Journal of Hydrodynamics 1990年第3期2卷 88-96页

作者： kato H Maeda M University of Tokyo 7-3-1HongoBunkyo-KuTokyo 113Japan

Tests with two different sized models were conducted in the Marine Propeller Cavitation Tunnel at the Univer- sity of *** two angles of attack the developed sheet-cloud and bubble cavitation *** pattern was recorded by pure indium specimens and noise was measured with a hydrophone mounted inside the *** broadband SPL was mainly used for correlation of noise with pit counting results from *** case of sheet- cloud cavitation power law relations between velocity and SPL have been found and there existed a linear relation- ship between SPL values and IgPR values(PR-pitting rate).However in case of bubble cavitation such power law relation does not exist between pitting rate and velocity,and neither between SPL and *** was noticed that the different trends of SPL for these two different types of cavitation could be qualitatively linked to their pitting rates by using some SPL values at high center frequencies.

关键词： ON CORRELATION OF CAVITATION EROSION AND NOISE ON A FOIL SECTION PP NACA

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超声波辅助农杆菌介导CP基因转化番小瓜(Carioca papaya L.)的有效方法

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实验生物学报 2004年第3期37卷 189-198页

作者：姜玲 MAOKA tetsuo KOMORI Sadao FUKAMACHI Hiroshi kato Hidenori OGAWA Kazunori 华中农业大学园艺林学学院国家果树种质资源室内保存中心日本北海道国家农业研究中心日本盛岗岩手大学农业生物技水系日本农林水产省国际农业研究中心冲绳亚热带试验站

本研究探索了通过农杆菌介导,超声波辅助处理,转化番木瓜胚性愈伤组织,获得转基因植株的有效方法。分别将含有日本PLDMV 外壳蛋白基因(PTi-Epj-TL-PLDMV)和含有台湾PRSV 菌株、美国夏威夷PRSV 菌株、泰国PRSV 菌株及日本PLDMV 菌株的多... 详细信息

本研究探索了通过农杆菌介导,超声波辅助处理,转化番木瓜胚性愈伤组织,获得转基因植株的有效方法。分别将含有日本PLDMV 外壳蛋白基因(PTi-Epj-TL-PLDMV)和含有台湾PRSV 菌株、美国夏威夷PRSV 菌株、泰国PRSV 菌株及日本PLDMV 菌株的多元外壳蛋白基因编码序列(PTi-NP-YKT)插入双元载体质粒pGA482G,借助于农杆菌系LBA4404将双元载体上的外壳蛋白基因和新霉素磷酸转移酶基因(nptⅡ)转移到番木瓜品种Sunset 的胚性愈伤组织中,从而获得抗卡那霉素的转化再生植株。试验着重在转化方法上进行探索。结果表明,农杆菌过夜培养后,用高渗透压培养液(1/2 MS+6%蔗糖+1%葡萄糖,pH 5.7)调整至光密度OD_(600(?)m)=0.15-0.20,然后用该菌液感染材料30min,其间辅以超声波处理,可以大大提高转化效率。用15ml 无菌离心管装载胚性愈伤材料进行15s 的超声波处理,在80块被转化的胚性愈伤中获得21个CP 基因G 转化系(26.3%),而在对照处理64块胚性愈伤中仅获得1个转化系(1.6%);在经过15s 的超声波处理48块被转化的胚性愈伤中获得8个CP 基因B 转化系(16.7%),而在对照处理25块胚性愈伤中未出现转化系。上述操作方法用在两种CP 基因转化上均表现出相似的效果。试验还表明:120mg/L 是卡那霉素抗性筛选的最佳浓度。抗性筛选9个月后,在421块胚性愈伤组织中产生了42个抗卡那霉素的转化系。所获得的转基因植株分别用PCR 和Southern 印迹杂交进行了鉴定。

关键词：超声波农杆菌 CP基因番木瓜胚性愈伤组织转化

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Functional imaging of astrocyte activity

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Neural Regeneration Research 2021年第6期16卷 1206-1207页

作者： Hiroki kato Tatsusada Okuno Department of Nuclear Medicine and Tracer Kinetics Osaka University Graduate School of Medicine2-2 Yamadaoka SuitaOsakaJapan Department of Neurology Osaka University Graduate School of Medicine2-2 Yamadaoka SuitaOsakaJapan

Astrocytes have become known to play a central role in various neuroinflammatory *** evaluation of astrocyte activity using functional imaging is becoming more *** metabolism or oxygen metabolism in the brain can be assessed using the established clinical imaging methods of F-18 fluorodeoxyglucose positron emission tomography(PET)and O-15 PET,***,until recently,the highly specific evaluation of metabolic activity in astrocytes has never been applied *** acetate is selectively taken up and metabolized by astrocytes,its usefulness as a tracer for measuring astrocyte activity has been proposed in basic research.

关键词： metabolism assessed clinical

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On a New Geometric Constant Related to the Modulus of Smoothness of a Banach Space

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Acta Mathematica Sinica,English Series 2014年第9期30卷 1526-1538页

作者： Yasuji TAKAHASHI Mikio kato Department of System Engineering Okayama Prefectural University Department of Mathematics Faculty of EngineeringShinshu University

We shall introduce a new geometric constant A（X） of a Banach space X, which is closely related to the modulus of smoothness px （T）, and investigate it in relation with the constant As （X） by Baronti et al., the von Neumann-Jordan constant CNj（X） and the James constant J（X）. A sequence of recent results on these constants as well as some other geometric constants will be strengthened and improved.

关键词： Constant A(X) von Neumann-Jordan constant James constant modulus of smoothness modulus of convexity uniform non-squareness

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