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Article
Open AccessUltradiscrete hard-spring equation and its phase plane analysis
Ultradiscretization enables us to construct a piecewise linear equation which approximates a given subtraction-free difference equation. Recently proposed “ultradiscretization with parity variables” (pUD) can ...
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Article
Open AccessDiagnostic and prognostic significance of serum angiopoietin-1 and -2 concentrations in patients with pulmonary hypertension
Several biomarkers for detecting pulmonary hypertension (PH) have been reported. However, these biomarkers are deemed insufficient to detect PH in its early stages. We evaluated the utility of serum angiopoiet...
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Article
Continuation maintenance therapy with S-1 in chemotherapy-naïve patients with advanced squamous cell lung cancer
Objectives Maintenance therapy is a standard therapeutic strategy in non-squamous non-small-cell lung cancer. However, there is no consensus regarding the benefit of maintenance therapy f...
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Article
Sequential addition of aprepitant in patients receiving carboplatin-based chemotherapy
Chemotherapy-induced nausea and vomiting is a challenging issue. Although aprepitant is sometimes used as a therapeutic option in patients receiving moderately emetogenic chemotherapy, the potential benefit of...
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Article
Changes in cross-sectional area of pulmonary vessels on chest computed tomography after chemotherapy in patients with advanced non-squamous non-small-cell lung cancer
Chemotherapy is associated with a risk of vascular damage. Novel anti-angiogenic agents, which can directly affect tumor angiogenesis, are increasingly being used. However, the effects of these agents on norma...
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Article
Unusually simple crystal structure of an Nd–Ce–Sr–Cu–O superconductor
Recently, a new copper oxide superconductor with an onset tem-perature of 28 K was found in the Nd–Ce–Sr–Cu–O system1. The superconducting phase was identified by X-ray diffraction and electron microscopy2, and t...
