7 research outputs found

    Ligand effect on redox reaction of metal ions and its application to analytical chemistry

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    筑波大学University of Tsukuba博士(理学)Doctor of Philosophy in Science1990【要旨】thesi

    FRAGMENT SIZE ANALYSIS OF FREE FETAL DNA IN MATERNAL PLASMA USING Y-STR LOCI AND SRY GENE AMPLIFICATION

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    2011-08Free fetal DNA (ffDNA) in maternal plasma has now become a valuable source for noninvasive prenatal diagnosis. Being able to accurately identify the size of ffDNA in maternal plasma is essential for a noninvasive prenatal diagnosis. Furthermore, it is important to investigate the molecular characteristics related to apoptosis which gives rise to ffDNA. We investigated the fragment size of ffDNA in each sample more precisely, using both Y-STR and SRY primers, in 20 maternal plasma samples from the 17th to 39th weeks of gestation. PCR was conducted with Y-STR and SRY primers which can be used to amplify 100–524 bp fragments. In samples from 10 pregnant women carrying male fetuses, the maximum fragment size detected by Y-STR and SRY primers ranged from 219 to 313 bp. As a result, the mean average maximum fragment size of free fetal DNA detected by Y-STR and SRY primers was 286±28 bp. The Y-STR alleles detected in each maternal plasma DNA sample were all in agreement with the results of their cord blood samples. We concluded that the fragment size of ffDNA comprises 2 nucleosomal complexes or less, but not exceeding 3.departmental bulletin pape

    Study on propagation loss characteristics considering car antenna position for inter-vehicle communications using 700MHz band at intersection

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    In the development of the inter-vehicle communication systems for the prevention of car crashes, it is important to know radio propagation characteristics at blind intersections. In field experiments and numerical simulations to investigate radio propagations, a half wavelength dipole antenna is assumed to be the wave source in many cases. However, the directivity of car antenna is changed by effects of car body and antenna positions on car body. Therefore, it is necessary to investigate effects of car antenna positions on radio propagation characteristics at blind intersections. In this paper, propagation loss characteristics considering car antenna position for inter-vehicle communications using 700 MHz band at a blind intersection is investigated. Here, the hybrid method using both the FDTD and ray-tracing methods is used for the electromagnetic analysis.conference pape

    DOA推定のための仮想素子を用いたアレー校正手法(アンテナ・伝搬,<特集>通信技術の未来を拓く学生論文)

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    近年,アレーアンテナを用いた高分解能到来方向推定手法であるMUSIC法などの応用が注目され,多数の分野において用いられている.しかし,実際の環境では,素子間相互結合やアレー素子の位置誤差などが生じるため,高分解能な手法の到来方向推定性能は著しく劣化する.そのため,高分解能な推定を実現するには,誤差要因の影響を取り除くための校正を施す必要がある.本論文では,仮想アレーの概念を用いた校正法を提案する.本手法は,実際のアレーアンテナに,本来存在しない素子を仮定して仮想的にアレー素子数を増加している点に特徴がある.本論文では,シミュレーションによって提案手法の有効性を検証している.journal articl

    Benthic deep-sea fauna in the Sea of Kumano, Mie Prefecture, Japan

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    application/pdfIn this study, we had investigated the benthic deep-sea fauna using the dredge and beam trawl in the region from the continental shelf to the continental slope of the Sea of Kumano, Mie Prefecture, during the No.1722 research voyage of the training ship Seisui-Maru of Mie University. The survey was carried out at 16 stations covering a depth range of 113-1059 m. The results of the survey, 14 phyla had been confirmed. Arthropod, echinoderm, annelid and molluscan macrobenthos were collected from all of the stations. The phylum number of each station was in the range from 4 to 11. The largest number of phyla had been confi rmed at St.10D of boulders bottom(768-800 m depth). Meiobenthos confi rmed in our sample were kinorhynchs, nematodes, tardigrades, loriciferans and small arthropods such as tanaidaceans, copepods and cumaceans. In addition to free-living species, parasitic copepods, isopods, platyhelminthes, acanthocephalans and nematodes had been found in fish, crustaceans and polychaetes.departmental bulletin pape
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