277 research outputs found

    Coordination of Two Antagonistic Flight Muscles during Wing-Beat of Bumblebee Visualized by Ultrafast X-ray Diffraction Movies

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    Clarà Ayats, JosepPla general, lateral, de l'estatuta classicista de nu femení que identificació de la joventut amb la bellesa. Mesura 2,97 x 0,79 x 0,70 metres i és de pedra artificial

    On the Algebraic Structure of Discrete Quantity Adjustment Processes

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    本論文では,(S, s) 在庫政策を伴う一般的な投入産出構造と時間構造を持つマクロ経済モデルを提示し,経済変動における離散的数量調整過程の特性を分析する。とくに個々の企業の生産および派生需要の伝播によるマクロ的在庫調整過程をそれぞれ演算として定義し,在庫調整過程の安定性に関する条件を示す。また演算の集合としての群を定義し,外生需要によって引き起こされる在庫調整過程を代数的に分析するアプローチを示すとともに,在庫調整過程とマクロ動学における安定集合の代数構造を分析する。最後に,マクロ経済の在庫水準の長期的な定常状態について分析する

    Measurement of persistence in YAG:Ce3+ scintillator with pulsed synchrotron X-rays

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    The decay time of YAG:Ce3+ scintillator was estimated to be 60 ns by using a fast CMOS camera and synchrotron bunches

    (S,s)経済分析における代数学的アプローチ

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    CT dose reduction factors in the thousands using X-ray phase contrast

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    Phase-contrast X-ray imaging can improve the visibility of weakly absorbing objects (e.g. soft tissues) by an order of magnitude or more compared to conventional radiographs. Previously, it has been shown that combining phase retrieval with computed tomography (CT) can increase the signal-to-noise ratio (SNR) by up to two orders of magnitude over conventional CT at the same radiation dose, without loss of image quality. Our experiments reveal that as radiation dose decreases, the relative improvement in SNR increases. We discovered this enhancement can be traded for a reduction in dose greater than the square of the gain in SNR. Upon reducing the dose 300 fold, the phase-retrieved SNR was still almost 10 times larger than the absorption contrast data. This reveals the potential for dose reduction factors in the tens of thousands without loss in image quality, which would have a profound impact on medical and industrial imaging applications

    Risk factors of immune checkpoint inhibitor-related interstitial lung disease in patients with lung cancer : a single-institution retrospective study

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    Immune checkpoint inhibitors (ICIs) elicit antitumour effects by activating the host immunity and cause immune-related adverse events (irAEs). ICI-related interstitial lung disease (ICI-ILD) is a fatal irAE that is difficult to treat; moreover, its incidence is relatively higher in patients with lung cancer. Therefore, early ICI-ILD detection and intervention are important for patient safety. However, a risk assessment method for ICI-ILD has not been established and the prediction of ICI-ILD occurrence is difficult. The aim of our study was to identify the risk factors associated with ICI-ILD. To this end, we retrospectively analysed 102 patients with lung cancer who first received ICI and completed the treatment between April 2016 and December 2019 at Tokushima University Hospital. Nineteen patients had all grades of ICI-ILD and 10 had grade ≥ 3 ICI-ILD. The 30-day mortality rate of patients with grade ≥ 3 ICI-ILD was the highest among all patients (P < 0.01). The multivariate logistic analysis indicated that the performance status ≥ 2 alone and both performance status ≥ 2 and ≥ 50 pack-year were independent risk factors of ICI-ILD of grade ≥ 3 and all grades, respectively. Overall, our study provides insights to predict ICI-ILD occurrence

    An X-ray diffraction study on a single rod outer segment from frog retina

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    X-ray diffraction was recorded from retinal rod outer segments of frog using a microbeam
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