Takashi Mitsui

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KamLAND has measured the flux of nu;(e)'s from distant nuclear reactors. We find fewer nu;(e) events than expected from standard assumptions about nu;(e) propagation at the 99.95% C.L. In a 162 ton.yr exposure the ratio of the observed inverse beta-decay events to the expected number without nu;(e) disappearance is 0.611+/-0.085(stat)+/-0.041(syst) for(More)
The KamLAND experiment has determined a precise value for the neutrino oscillation parameter Deltam21(2) and stringent constraints on theta12. The exposure to nuclear reactor antineutrinos is increased almost fourfold over previous results to 2.44 x 10(32) proton yr due to longer livetime and an enlarged fiducial volume. An undistorted reactor nu[over]e(More)
BACKGROUND A recently discovered non-A-E hepatitis virus has been designated hepatitis GB virus C (HGBV-C), but little is known about its mode of transmission and its clinical manifestations. We studied 519 patients on maintenance hemodialysis to determine whether they were infected with HGBV-C. METHODS HGBV-C RNA was identified in serum by a(More)
We present results of a study of neutrino oscillation based on a 766 ton/year exposure of KamLAND to reactor antineutrinos. We observe 258 nu (e) candidate events with energies above 3.4 MeV compared to 365.2+/-23.7 events expected in the absence of neutrino oscillation. Accounting for 17.8+/-7.3 expected background events, the statistical significance for(More)
Angiogenesis is crucial for tumor growth and metastasis. Hepatocellular carcinoma (HCC) is a typical hypervascular tumor. However, the relationship between tumor vascularity and the outcome of patients with HCC has not been evaluated. To clarify whether tumor angiogenesis is related to the prognosis of patients, immunohistochemical staining, using anti-von(More)
A patient on maintenance hemodialysis was infected with a recently discovered putative non-A to -E hepatitis virus designated GB virus C (GBV-C) or hepatitis G virus (HGV) by transfusion. The viral isolate was recovered from the patient soon after she turned positive for GBV-C/HGV RNA in serum (GS185) and 8.4 years thereafter (GS193), and the entire(More)
Hepatitis C virus infections in medical personnel after needlestick accidents have been documented generally by detection of seroconversion to a hepatitis C virus nonstructural region antigen, c100-3 (a marker of infection). We tested for hepatitis C virus core-derived antibodies and genomic RNA in addition to c100-3 antibody in 159 cases of needlestick(More)
Two cases of spontaneous ectopic pregnancy occurring in the isthmic portion of the remnant tube after previous ipsilateral adnexectomy are presented. Laparoscopic observation and postoperative histopathological examination suggested intrauterine transmigration of the fertilized egg as the etiology. Laparoscopic excision of the remnant tube was performed and(More)
The indications for endoscopic full-thickness resection (EFTR) are limited because transmural communication during the entire procedure, causing tumor dissemination into the abdominal space, is inevitable. We invented a new method of EFTR without transmural communication, and explored its feasibility in an ex vivo porcine model. Three explanted porcine(More)
Full-thickness resection for gastric malignancy carries a risk of peritoneal dissemination due to opening of the gastric lumen. We evaluated the feasibility and safety a novel method of full-thickness resection without transmural communication, called nonexposed endoscopic wall-inversion surgery in ex vivo and in vivo porcine models. Six explanted porcine(More)