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Case Report: Anaplastic Astrocytoma Treated with Postoperative Radiotherapy Using Flattening Filter-Free Volumetric Arc Therapy (FFF-VMAT) during Pregnancy—Acceptable Fetal Dosimetry

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Journal of Cancer Therapy 2020年第11期11卷 738-744页

作者： Tomoyuki Noyama Wataru Takahashi Yuki Nozawa Kanabu Nawa Hideomi Yamashita osamu abe Keiichi Nakagawa Department of Radiology The University of Tokyo Hospital Bunkyo-ku Tokyo Japan

Background: Postoperative irradiation for brain tumor in pregnant women is a matter of concern. Aim: We aimed to assess the safety of radiotherapy for brain tumors in pregnancy. We here report a successful treatment for anaplastic astrocytoma during pregnancy: surgery + postoperative irradiation. We wish to emphasize how we devised irradiation procedure to achieve both therapeutic effectiveness and safety to the fetus/infant. Case Presentation: A 34-year-old pregnant woman suffered with brain anaplastic astrocytoma. Tumor resection under craniotomy was performed with success. We decided to conduct postoperative radiotherapy at 25 weeks of gestation to reduce the risk of recurrence. We used a flattening filter-free volumetric arc therapy (FFF-VMAT) technique, which can achieve lower out-of-field dose than VMAT with a flattening filter or helical tomotherapy. We prescribed 60 Gy over 30 fractions. During actual beam delivery, surface and rectal dose to the patient (mother) were measured. The total fetal dose was estimated at 0.006 - 0.018 Gy, which is under the threshold set by the ICRP. A male healthy infant was born vaginally at the 37th week of pregnancy. The patient (mother) and the infant are healthy at the time of writing. Conclusion: FFF-VMAT is a good choice for brain tumors during pregnancy.

关键词： Pregnancy Radiotherapy Flattening Filter-Free Volumetric Arc Therapy An-aplastic Astrocytoma Fetal Dose

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新型厚膜应变计

中国检验检测 1990年第3期 42-44页

作者： osamu abe 唐煜

1.前言近年来,应变计被用于各种测量中,如称重、测量声功率、长度和体积的变化等等。应变计可概括地分成两类,合金型和半导体型。合金型应变计虽然灵敏度不高,但它有良好的稳定性,造价低。半导体型应变计,其灵敏度

关键词：硅应变计 TCR 特性曲线赫德曲线非线绕电阻器厚膜电阻器阻值

Improving recognition of hepatic perivascular epithelioid cell tumor:Case report and literature review

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World Journal of Gastroenterology 2015年第17期21卷 5432-5441页

作者： Toshiya Maebayashi Katsumi abe Takuya Aizawa Masakuni Sakaguchi Naoya Ishibashi osamu abe Tadatoshi Takayama Hisashi Nakayama Shunichi Matsuoka Kazushige Nirei Hitomi Nakamura Masahiro Ogawa Masahiko Sugitani Department of Radiology Nihon University School of MedicineItabashi-kuTokyo 173-8610Japan Department of Digestive Surgery Nihon University School of MedicineItabashi-kuTokyo 173-8610Japan Department of Gastroenterology and Hepatology Nihon University School of MedicineItabashi-kuTokyo 173-8610Japan Department of Pathology Nihon University School of MedicineItabashi-kuTokyo 173-8610Japan

A 58-year-old man presented with the chief complaint of abdominal bloating and was incidentally found to have a liver *** diagnostic imaging studies could not rule out malignancy,the patient underwent partial resection of segment 3 of the *** lesion pathologically showed eosinophilic proliferation,in addition to immunohistochemical positivity for human melanoma black 45 and Melan-A,thereby leading to the diagnosis of a hepatic perivascular epithelioid cell tumor(PEComa).A PEComa arising from the liver is relatively ***,the name ‘PEComa' has not yet been widely recognized,and the same disease entity has been called epithelioid angiomyolipoma(EAML),further diminishing the recognition of *** addition,PEComa imaging findings mimic those of malignant liver tumors,and clinically,this tumor tends to ***,a PEComa is difficult to *** conducted a systematic review of PEComa and EAML cases and discuss the results,including findings useful for differentiating perivascular epithelioid cell tumors from malignant liver tumors.

关键词： Angiomyolipoma Tuberous sclerosis Melan-A Perivascular epithelioid cell tumor Humanmelanoma black 45 Imaging

Zn Dissolution-Passivation Behavior with ZnO Formation via In Situ Characterizations

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Energy & Environmental Materials 2024年第1期7卷 193-200页

作者： Tanyanyu Wang Masahiro Kunimoto Masahiro Yanagisawa Masayuki Morita Takeshi abe Takayuki Homma Graduate School of Advanced Science and Engineering Waseda University1-104 TotsukamachiShinjuku-kuTokyo 169-8050Japan Office of Society-Academia Collaboration for Innovation Kyoto UniversityGokashoUji 611-0011Japan Graduate School of Engineering Kyoto UniversityKyoto daigaku-katsuraNishikyo-kuKyoto 615-8510Japan

In this study,ZnO formation during the dissolution-passivation process of Zn anodes is observed via in situ Raman and optical *** Zn passivation during galvanostatic anodization merely follows the dissolution-precipitation model,whereas that of potentiodynamic polarization exhibits different behaviors in different potential ***,the Zn electrode is gradually covered by a ZnO precipitation film and then undergoes solid-state oxidation at~255 *** starting point of solid-state oxidation is well indicated by the abrupt current drop and yellow coloration of the electrode *** the pseudo passivation,an intense current oscillation is ***,blink-like color changes between yellow and dark blue are revealed for the first time,implying that the oscillation is caused by the dynamic adsorption and desorption of OH *** as-formed ZnOs then experience a dissolution-reformation evolution,during which the crystallinity of the primary ZnO film is improved but the solid-state-formed ZnO layer becomes rich in oxygen ***,oxide densification is realized,contributing to the Zn *** study provides new insights into the Zn dissolution-passivation behavior,which is critical for the future optimization of Zn batteries.

关键词： in situ characterization Zn dissolution and passivation ZnO formation

Thermal stability of the Cr-coated zirconium alloy microstructure prepared by pulsed laser deposition

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Tungsten 2024年第2期6卷 333-341页

作者： Bo Li Hui-Long Yang Reuben Holmes Li-Juan Cui Sho Kano Hiroaki abe Department of Nuclear Engineering and Management The University of TokyoTokyo 113-8656Japan School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Nuclear Professional School The University of TokyoIbaraki 319-1188Japan

Cr-coated zirconium alloy was prepared by pulsed laser deposition(PLD)for the application of accident-tolerant fuel cladding in light water *** microstructural characteristics of the Cr coating and its evolution with temperature were investigated using grazing incidence X-ray diff raction and in situ heating transmission electron microscopy(TEM).Results show that the microstructure of the laser-deposited Cr coatings consists mainly of fine and non-specific shaped nano-crystals in the inner layer and columnar crystals in the outer *** recrystallization of the Cr-coating layer starts at 300–400℃ to release the high strain introduced by PLD,and the grain coalescence starts at temperatures>400°*** annealing,the(110)-texture gradually intensifi es because of its high reticular density and low close-packed ***,in situ heating TEM observation shows the presence of cavities on the Cr–Zr interface,which may result from the interdiff usion and/or the transformation from amorphous to crystalline.

关键词： Accident tolerant fuel Crcoating Interface Microstructure Pulsed laser deposition

Expression levels of K_(ATP)channel subunits and morphological changes in the mouse liver after exposure to radiation

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World Journal of Experimental Medicine 2024年第2期14卷 103-113页

作者： Ming Zhou Tao-Sheng Li Hiroshi abe Hideo Akashi Ryoji Suzuki Yoshio Bando Department of Anatomy Akita University Graduate School of MedicineAkita 010-8543Japan Department of Stem Cell Biology Atomic Bomb Disease InstituteNagasaki UniversityNagasaki 852-8523Japan Sendai Old Age Refresh Station A Long-term Care Health FacilitySendai 981-1105Japan

BACKGROUND ATP sensitive K+(K_(ATP))channels are ubiquitously distributed in various of cells and tissues,including the *** play a role in the pathogenesis of myocardial and liver *** To evaluate the radiation-induced changes in the expression of K_(ATP)channel subunits in the mouse liver to understand the potential role of K_(ATP)channels in radiation *** Adult C57BL/6 mice were randomly exposed toγ-rays at 0 Gy(control,n=2),0.2 Gy(n=6),1 Gy(n=6),or 5 Gy(n=6).The livers were removed 3 and 24 h after radiation *** and eosin staining was used for morphological observation;immunohistochemical staining was applied to determine the expression of K_(ATP)channel subunits in the liver *** Compared with the control group,the livers exposed to 0.2 Gyγ-ray showed an initial increase in the expression of Kir6.1 at 3 h,followed by recovery at 24 h after *** to a high dose of 5.0 Gy resulted in decreased expression of Kir6.1 and increased expression of SUR2B at 24 ***,the expression of Kir6.2,SUR1,or SUR2A had no remarkable changes at 3 and 24 h after exposure to any of these *** The expression levels of Kir6.1 and SUR2B in mouse liver changed differently in response to different radiation doses,suggesting a potential role for them in radiation-induced liver injury.

关键词： Radiation exposure ATP-sensitive K^(+)channel Mouse Liver

Mitigation of Transients in Capacitor Coupled Substations Using Traditional RLC Filter Techniques

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Journal of Power and Energy Engineering 2024年第5期12卷 60-75页

作者： Sinqobile Wiseman Nene Bolanle Tolulope abe Agha Francis Nnachi Department of Electrical Engineering Tshwane University of Technology eMalahleni South Africa

This article presents an extensive examination and modeling of Capacitor Coupled Substations (CCS), noting some of their inherent constraints. The underlying implementation of a CCS is to supply electricity directly from high-voltage (HV) transmission lines to low-voltage (LV) consumers through coupling capacitors and is said to be cost-effective as compared to conventional distribution networks. However, the functionality of such substations is susceptible to various transient phenomena, including ferroresonance and overvoltage occurrences. To address these challenges, the study uses simulations to evaluate the effectiveness of conventional resistor-inductor-capacitor (RLC) filter in mitigating hazardous overvoltage resulting from transients. The proposed methodology entails using standard RLC filter to suppress transients and its associated overvoltage risks. Through a series of MATLAB/Simulink simulations, the research emphasizes the practical effectiveness of this technique. The study examines the impact of transients under varied operational scenarios, including no-load switching conditions, temporary short-circuits, and load on/off events. The primary aim of the article is to assess the viability of using an established technology to manage system instabilities upon the energization of a CCS under no-load circumstances or in case of a short-circuit fault occurring on the primary side of the CCS distribution transformer. The findings underscore the effectiveness of conventional RLC filters in suppressing transients induced by the CCS no-load switching.

关键词： Capacitor Coupled Substation System Modeling Ferroresonance RLC filters Power Electronics Transients Capacitor Voltage Transformers Transmission Lines

Novel procedure for hepatic venous outflow block after liver resection:A case report

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World Journal of Clinical Cases 2024年第29期12卷 6320-6326页

作者： Hisanobu Higashi Yuta abe Kodai abe Yutaka Nakano Masayuki Tanaka Shutaro Hori Yasushi Hasegawa Hiroshi Yagi Minoru Kitago Yuko Kitagawa Department of Surgery National Hospital Organization Saitama HospitalWako 351-0102Japan Department of Surgery Keio University School of MedicineTokyo 160-8582Japan

BACKGROUND Postoperative complications like remnant hepatic vein(HV)outflow block and liver torsion can occur after right *** falciform ligament fixation is typically used to prevent liver *** report a novel procedure to manage outflow *** SUMMARY An 80-year-old man developed HV outflow block after remnant right hepatectomy,despite liver fixation and intraoperative HV flow *** had a history of cholangiocellular carcinoma and had undergone posterior segmentectomy and *** falciform ligament fixation was inadequate to maintain liver *** surgery was performed,using an omental flap and mobilized right side colon with ileocecal region to prevent liver dislocation due to intraabdominal *** postoperative course was *** This is the first report providing a novel surgical procedure when the falciform ligament is insufficient for remnant liver fixation.

关键词： Hepatectomy Postoperative complications Budd-Chiari syndrome Hepatic vein outflow block Emergency surgery Case report

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人类活动与天山现代冰川退缩

干旱区地理 1999年第3期22卷 17-22页

作者：胡汝骥姜逢清马虹阿部修中国科学院新疆生态与地理研究所乌鲁木齐830011 日本国新庄雪冰防灾研究文所

在系统分析了中亚天山山地两个长期进行物质平衡监测的乌鲁木齐河源１号冰川和图尤克苏冰川站的资料，并引用其他研究成果后，发现中亚天山现代冰川１９７０年～１９９０年比１９３０年～１９７０年明显的退化。近２０多年来，中亚天... 详细信息

在系统分析了中亚天山山地两个长期进行物质平衡监测的乌鲁木齐河源１号冰川和图尤克苏冰川站的资料，并引用其他研究成果后，发现中亚天山现代冰川１９７０年～１９９０年比１９３０年～１９７０年明显的退化。近２０多年来，中亚天山冰川加速退缩、解体．与被工业排放物污染了的大气有关。

关键词：人类活动现代冰川天山冰川空气污染