Acoustic excitation was used for method to prompt reattachment on airfoils. However several studies have been made on acoustic excitation, little attention has been given to the reattachment process in terms of turbulent intensity in separation shear layer. Then we will discuss the effect of sound on separation shear layer in this paper. According to the performance test and velocity measurement in boundary layer, we confirmed that the lift coefficient increase and drag coefficient decrease by acoustic excitation. We can interpret this phenomenon in the following way: Firstly, the separation boundary layer is disturbed by radiating the sound. This sound of frequency equals to the period of flow fluctuation in separation boundary layer. Secondly, turbulent intensity increased near the reattachment point. Finally, Reattachment is prompted. Additionally, we recognized that the effective frequency is 160Hz〜180Hz, effective sound pressure level is approximately 63dB for MEL12.

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The surveyed building consists of a 234 m high skyscraper, which is connected to two 30m-high low-rise structures. The total area of the building is 200 × m. The high-rise part is supported by a spread foundation on the Tokyo Gravel Stratum at GL-29 m and the low-rise parts are supported by pile foundations with the lower end of the piles on the same stratum. This paper describes the results of the field measurements of the ground heave and settlement on the bearing stratum during construction period, and compares the results with the predicted ground heave and settlement.

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成人急性骨髄性白血病（M3を除く）32例に対して短期の強力化学療法を行った。daunorubicin, cytosine arabinoside (araC), 6-mercaptopurine, prednisolone, mitoxantrone (MIT)およびetoposide (VP16)による寛解導入(CR)後はMIT-VP16療法，続いてaclarubicin-behenoyl-araC療法，最後にVP16, araC, vincristineおよびvinblastine併用療法を治療間隔を出来るだけ短縮して行い治療終了した。CRは24例(75%)に得られ，全症例の5年無病生存率は24%であった。全治療期間は96∼157（中央値120）日であった。いずれの寛解後療法でも導入療法と同様に高度の骨髄抑制が観察され，1例に寛解中の治療関連死が見られた。この短期治療の治療成績は以前行っていた治療期間515日を要した療法と同様であった。今後，短期治療の有用性を明らかにするための多数症例での検討が望まれる。

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A possible whole-mantle convection model is employed to investigate the convection patterns and the topography of Core-Mantle Boundary (CMB) in this work. We choose three general boundary conditions and three special conditions to constrain our model. These are 1) the vertical velocity is equal to zero at both lower and upper boundaries and the temperature is constant at the upper boundary, 2) Runcorn's correlation equation between mantle convection and the Earth's geoid anomalies, 3) the horizontal velocity is equal to the poloidal component of Plate absolute motion model AM1-2 (MINSTER and JORDAN, 1978), 4) the correlation equation between mantle convection and a “rigid-boundary earth's” geoid anomalies predicted from density heterogeneity of the mantle transformed from the seismic tomography models LO2.56 (DZIEWONSKI, 1984) and C (WOODHOUSE and DZIEWONSKI, 1984). Results show that computed topography of CMB is changing with Rayleigh number. When the Rayleigh number of the mantle is taken in the region 50000-80000 (not more than 1.5 times critical) the peak-to-peak value of CMB topography is about 5.6-6.2 km. The predicted map of CMB topography can fit the observed results constructed by inversion of PcP residuals very well (MORELLI and DZIEWONSKI, 1987). It is clear that there are highs extending over the Central and Eastern Pacific, and three lows appear in the regions: south of Japan, Colombia, and North-east of New Zealand in both maps.

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The characterization and consolidation of mechanically alloyed M_99.7(C₆₀, C₇₀)_0.3 mol% and at% (M=Al, Cu, Fe) powders were carried out. The mechanical stability of carbon fullerene(C₆₀, C₇₀) was studied in a preliminary experiment prior to MA (metal fullerene). The result has shown that the fcc structure of fullerene (C₆₀, C₇₀) remAlns after long time milling. In addition, a new molecule probably a dimer of C₆₀ is formed during milling. The phase changes of the processed powders with milling time were studied using x-ray diffraction and high performance liquid chromatography. The MA powders were subsequently sintered by plasma sintering machine. The phases present, microstructure, hardness of the sintered compacts were studied using TEM, X-ray diffraction and vickers hardness tester. In the Al- and Fe-fullerene system, Al₄C₃ and Fe₃C formed during sintering of Al-(C₆₀, C₇₀) and Fe-(C₆₀, C₇₀) mechanically alloyed powders respectively. In TEM micrographs of Cu-fullerene MA powders very fine Cu particles were observed around MA powder. These fine particles were considerd to be produced by the evaporation of Cu from MA powder by electron beam irradiation. This indicates that the powder is heated by electron beam and separation of Cu and carbon takes place.

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大腸早期癌(壁深達度がmおよびsmの癌)383例をその肉眼型からIp有茎型(,sm38),Isp亜有茎型(m49,sm51),Is広基型(m26,sm49),IIa表面隆起型(m27,sm25),IIa+IIc表面隆起中央陥凹型(m4,sm26),IIc表面陥凹型(sm2),不明(m1,sm1)に分類し,IIa,IIa+IIc,IIcを表面型としてその特徴と外科治療について検討した.肉眼型と大きさからmとsmを術前に確実に診断することは難しく,また表面型では進行癌と誤診する率が高かった.sm癌のリンパ節転移率はIIa13.6%,IIa+IIc20%で隆起型のIp3.4%,Isp7.1%,Is9.3%と比べて高率だった.リンパ節転移陽性または再発癌死した率は隆起型が10%以下であるのに対し,表面型ではIIa16%,IIa+IIc19.2%と高く,表面型sm癌に対しては根治性の高い治療を選択することが肝要である.

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日本で始めて出來た航空發動機用雲母製點火栓の完成されるに至つた沿革を述べ、立川工作所に於ける設備の大要をあげ、點火栓の型式決定に關する事項を設明し、且つ使用材料、工作方法、檢査規格竝に性能等の一般について示した。

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【目的】様々な疾患の発症に関連している低ビタミンD（VD）の状態は．残念ながら日本では一般的である．COVID-19の大流行によりオフィスワーカーは“新しい生活様式”として在宅勤務を余儀なくされ，VD不足を悪化させている可能性がある．本研究では“新しい生活様式”として定着した在宅勤務が血清25-hydroxyvitamin D (25OHD)濃度に影響を与えるかについて横断研究を行った． 【方法】神奈川県横浜市のオフィスワーカー116名（平均年齢41.2歳，F/；/32）を対象に，2020年4月～6月にかけて調査を行った．いくつかの質問票と血液サンプルを採取した．VD欠乏は血清25OHD < 20 ng/mL と定義した． 【結果】VD欠乏であったのは参加者の62.1％であった．VD欠乏および血清25OHD値と在宅勤務または通勤のいずれとの間にも関連はなかった．一方，ステップワイズ法による重回帰分析では，VD欠乏はVDサプリメント摂取量(p = 0.047)および頻度（週5日以上）(p = 0.004)のオッズ比が有意であった．さらに，血清25OHD値は日光曝露(p = 0.036)，VDサプリメント摂取量(p = 0.047)および頻度（週5日以上）(p < 0.001)と有意に関連していた． 【結語】本研究では，過半数のオフィスワーカーで血清25OHD値が不足していた．ステップワイズ法による解析において日光曝露とVDサプリメント摂取が血清25OHD値に有意な影響を与えていることが示された．これらのデータから，日光曝露と食品からの積極的なVD摂取がオフィスワーカーまたは在宅勤務者におけるVD不足を補うための有力な手段であることが示された．

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今回, 自験例の4例を中心に緊急手術を目的としたIABP駆動下CCU間搬送の問題点, および10機種のIABPの移送に際した性能, 特性の比較検討をおこなった。移送に際し, 問題となる点としては, IABPのサイズと搬送車のサイズの問題, 搬送距離と消費電力, 内蔵バッテリー容量, そしてその容量を越える長距離間の搬送時の電源確保などであった。新型になるにつれ, 装置の小型化がはかられているが, 旧型のものでは, サイズ的に一般救急車には搭載不能でワゴン車などのレンタカーを用いる必要があった。また省エネ化も進んでいるが, 長距離搬送の際の電源としては, 予備バッテリーの使用, 100VACへのインバーターを用いて車より確保する方法, ポータブル発電機の使用などがあげられるが, 高容量車からの確保がもっとも実際的と考えられた。

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This paper presents the outline of the core thermohydraulic design and analysis of the research reactor JRR-3, which is to be upgraded to a 20 MWt pool-type, light water-cooled reactor with 20% low enriched uranium (LEU) plate-type fuel. For the condition of normal operation, the upgraded JRR-3 core is planned to be cooled by two cooling modes of forced-convection at high power and natural-convection at low power. The major feature of core thermohydraulics is that at the forced-convection cooling mode the core flow is a downflow, under which fuel plates are exposed to a severer condition than an upflow in cases of operational transients and accidents. The core thermohydraulic design was, therefore, done for the condition of normal operation so that fuel plates may have enough safety margins both against the onset of nucleate boiling (ONB) not to allow the nucleate boiling anywhere in the core and against the departure from nucleate boiling (DNB). The safety margins against ONB and DNB were evaluated. The core velocity thus designed is at the optimum condition where fuel plates have the maximum margin against the ONB, and the minimum DNB ratio (ratio of DNB heat flux to the maximum heat flux) was evaluated to be about 2.1, which gives a sufficient margin against the DNB. The core thermohydraulic characteristics were also clarified for the natural-convection cooling mode.

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近年のマツ材線虫病による松枯れ等により，海岸林の構成樹種に広葉樹が選択される場合がある。本研究では，主に広葉樹により構成される海岸林が長期的且つ安定して維持されるかを検討するため，沿海域に成立する広葉樹林を対象に，実生と成木の空間分布の比較を行った。結果，沿海域に成立する広葉樹林は天然更新により長期的に維持される可能性が示唆された。ヒメユズリハ，マサキ，ホルトノキ，バリバリノキは更新によって今後も現在の成木と近い林分を維持する可能性が考えられる。一方でグミ類，ヤブニッケイ，タブノキは実生と成木の空間分布に差異がみられ，今後は空間内での分布範囲や優占度に変化が生じる可能性が考えられる。

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In order to understand physics properties of axially heterogeneous LMFBR cores, relative power distribution was measured using a γ-counting method in zone-type partial mockup cores. By introducing an inner blanket at the core midplane, flat power distribution is achieved compared with that of conventional homogeneous cores, Axial power peaking factor is obtained from the measured power distribution in the cores having the inner blanket of different geometries.
Investigation is also made on distortion of the power distribution caused by simulated B₄C control rods having different ¹⁰B enrichments (20 and 55%), which are partially inserted into an upper half of the core, Discussions are made on degree of power distortion and its propagation distance. It is observed that the inner blanket mitigates this disturbance caused in the upper half of the core to a lower half of the core.
The calculated distribution agrees quite well with the measured power distribution within experimental errors both in the inner blanket and core regions, while significant discrepancy is observed in an outer blanket region. The calculation predicts well the degree of the distortion of the power distribution caused by the simulated B₄C control rods.

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We perform iterative waveform inversion for laterally heterogeneous upper mantle structure using a new method for computing synthetic seismograms and their partial derivatives. The shorter wavelength lateral heterogeneity of our model differs significantly from previous models in the deeper part of the upper mantle. The better variance reduction attained by our model suggests that it is a more accurate model of upper mantle structure.

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Flow rate distribution and total pressure loss of a coolant flow through a control rod channel in the Very High Temperature Gas Cooled Reactor (VHTR) were analytically and experimentally examined. Helium gas of atmospheric temperature was used in the experiment; and the total mass flow rates ranged 0.0050.05 kg/s and the gas pressures ranged 0.140.42 MPa. Pressure losses and flow rates in the control rod channel were measured. An analysis was made by using a one-dimensional flow network model for the inner and outer channels and the gap. The analytical results agreed fairly well with the experimental results on the flow rate distribution and the total pressure loss in the control rod channel.

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This report is concerned with the signal preprocessing techniques used in an on-line data recording system developed for acquisition of non-stationary reactor noise signals. The reactor noise signals recording requires signal preprocessings such as (1) separating the signal into fluctuation and dc-component and (2) amplifying the fluctuation with an optimal gain. However, conventional signal preprocessors using analog devices could not work well for the non-stationary signals.
By applying a digital signal processing technique, the author has developed a new signal separator which is capable of changing the type and characteristics of filters depending on the signal properties. A filter-amplifier with function of searching for the optimal gain has been also developed. Both equipments were tested through data recording of simulated and real reactor noise signals. The test results show that these equipments make it possible to record the noise signals not only in the case where the dc-component slowly changesbut also in the case where it changes rapidly with a large amplitude.

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