164 research outputs found

    Clinical studies on treatment by ESWL using EDAP LT-02 for upper urinary tract calculi

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    1993年7月より1994年3月までの9ヵ月間に, 新ESWL機器エダップLT-02(R)を用いて上部尿路結石症246例(277腎単位)に対しESWLを行い, 良好な成績がえられたので, 3ヵ月経過観察可能な224腎単位のESWL単独療法の治療成績を報告したFrom July 1993 through March 1994, 512 ESWL therapy was performed on upper urinary tract calculi in 277 renoureteral units using an EDAP LT-02 Lithotripter. Of these cases, 244 renoureteral units which were followed up for more than 3 months after ESWL were examined. These included 124 renal stones and 100 ureteral stones. Complete removal or sufficient stone disintegration was obtained in 66.7, 98.0 and 94.1% in the R1, R2 and R3 groups of renal stones, respectively, and in 92.4, 87.5 and 100% in the U1, U2 and U3 groups of ureteral stones, respectively. The over-all stone-free and success rates were 78.2 and 95.2%, respectively for renal stones and 93.0% and 94.0% respectively for ureteral stones. These results were better than those obtained by LT-01 in our experiences. The newly built-in coaxial X-ray system greatly contributed to these high success rates. As side effects, there were no serious complications. It is concluded that ESWL using an EDAP LT-02 is safer and more effective for the treatment of upper urinary tract calculi

    "Dehydrated" chondrules from the Murchison (CM) chondrite

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    P(論文)Two "dehydrated" chondrules (MC-5 and MC-27) were obtained from close to the fusion crust of the Murchison (CM) meteorite. They have a porphyritic texture with angular or rounded (relict) olivines containing abundant voids, recrystallized olivines, and numerous interstitial Fe oxide grains embedded in groundmass glass. This peculiar texture is similar to that of the fusion crust from the Orgueil (CI) chondrite, indicating that the texture formed during the reheating at the atmospheric entry of the meteorite. Isotope dilution analyses indicate that these chondrules have light-REE depleted pattern with a large negative Eu anomaly (CI normalized Sm/La ratio=1.3-2.4,Eu/Eu^*=0.40-0.57). They also show relatively low Ba and Sr (0.4-1.0×CI) concentrations and depletion of alkalies (0.2-0.4×CI). The lithophile element abundances of the two chondrules are in a similar range of those for other altered CM chondrules in the Murchison and the Yamato-793321 chondrites. It is suggested that the chemical compositions of chondrules, specifically REE and alkali abundances, remained unchanged but significant changes of petrographic texture occurred during atmospheric heating.departmental bulletin pape

    Letter from Thomas R. Bodine, American Friends Service Committee Seattle office, to Mary M. Kimber, May 25, 1942

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    Letter from Thomas R. Bodine to Mary M. Kimber, asking Kimber to visit individuals from the Puget Sound area incarcerated at Pinedale Assembly Center: Rev. Daisuke Kitigawa, Waichi Oyanagi, Chisako Higuchi, Mutsuo Hasiguchi and Mrs. Matsuoka, Makato Kobukata, the Hirabayashi family, and Violet Yokoyama. A note in pencil at the top of the page: "Burcham." A response letter from Grace and Calvin Coke to Thomas R. Bodine is found in item: chs_ms840_0306.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide

    金沢城鉛瓦と低バックグラウンドγ線測定

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    The use of lead in the roof tiles in the construction of Kanazawa Castle was a unique feature among the castles of Japan. This was done for the purposes of creating a more beautiful appearance, for the storage of surplus lead, for material for bullets in wartime, for reducing the weight of the roof, and so forth. The roof tiles bestow a quaint and whitish appearance to the castle as a result of the passing of time. The castle site was used as the main campus for Kanazawa University following its use as an army base until the end of World War II. When the university moved its campus to another location, the area was converted into a castle park with a beautifully restored castle. The used and depleted 210Pb (half-life, 22.3 years) lead tiles from the castle buildings have been found to serve as important shield materials for Ge detectors used in γ-spectrometry. The Low Level Radioactivity Laboratory at Kanazawa University prepared hand-made shields using castle lead that was discarded during the demolition of the castle buildings. In co-operation with the Ogoya Underground Laboratory (270-meter-thick water equivalent), these lead shields reduced the counting rates of Ge detectors notably to ~1/100 of ground levels, which corresponded to an improvement of ~1/10 of the detection limit for low-level radionuclides. In a period of twenty-eight years since 1995, significant research has been conducted using Ge detectors to study geochemistry and radioactive contamination. One notable example included measuring the oceanwide diffusion of low-level radiocesium, which escaped from the Fukushima Dai-ichi Nuclear Power Plant following its flooding during the March 2011 earthquake and tsunami disaster in the Tohoku region of northeastern Japan
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