115 research outputs found

    The changing interpretations of the flying geese model of economic development

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    The flying geese model, a theory of industrial development in latecomer economies, was developed in the 1930s by the Japanese economist Akamatsu Kaname (1896–1974). While rarely known in western countries, it is highly prominent in Japan and seen as the main economic theory underlying Japan’s economic assistance to developing countries. Akamatsu’s original interpretation of the flying geese model differs fundamentally from theories of western origin, such as the neoclassical model and Raymond Vernon’s product cycle theory. These differences include the roles of factors and linkages in economic development, the effects of demand and supply, as well as the dynamic and dialectical character of Akamatsu’s thinking. Later reformulations of the flying geese model, pioneered by Kojima Kiyoshi, attempt to combine aspects of Akamatsu’s theory with neoclassical thinking. This can be described as the “westernization” of the flying geese model. It is this reformulated interpretation that has become popular in Japan’s political discourse, a process that might be explained by the change in Japan’s perspective from that of a developing to that of an advanced economy. The position taken by Japan in its recent controversy with the World Bank, however, shows that many basic elements of Akamatsu’s thinking are still highly influential within both Japan’s academia and its government and are therefore relevant for understanding current debates on development theory

    The Hydrogen Burning Turn-off of RS Ophiuchi 2006

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    We report a coordinated multi-band photometry of the RS Oph 2006 outburst and highlight the emission line free y-band photometry that shows a mid-plateau phase at y ~ 10.2 mag from day 40 to day 75 after the discovery followed by a sharp drop of the final decline. Such mid-plateau phases are observed in other two recurrent novae, U Sco and CI Aql, and are interpreted as a bright disk irradiated by the white dwarf. We have calculated theoretical light curves based on the optically thick wind theory and have reproduced the observed light curves including the mid-plateau phase and the final sharp decline. This final decline is identified with the end of steady hydrogen shell-burning, which turned out the day ~80. This turnoff date is consistent with the end of a supersoft X-ray phase observed with Swift. Our model suggests a white dwarf mass of 1.35 \pm 0.01 M_\sun, which indicates that RS Oph is a progenitor of Type Ia supernovae. We strongly recommend the y-filter observation of novae to detect both the presence of a disk and the hydrogen burning turn-off.Comment: to appear in ApJL, 4 pages including 4 figure

    Regulation of Epithelial Sodium Transport via Epithelial Na+ Channel

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    Renal epithelial Na+ transport plays an important role in homeostasis of our body fluid content and blood pressure. Further, the Na+ transport in alveolar epithelial cells essentially controls the amount of alveolar fluid that should be kept at an appropriate level for normal gas exchange. The epithelial Na+ transport is generally mediated through two steps: (1) the entry step of Na+ via epithelial Na+ channel (ENaC) at the apical membrane and (2) the extrusion step of Na+ via the Na+, K+-ATPase at the basolateral membrane. In general, the Na+ entry via ENaC is the rate-limiting step. Therefore, the regulation of ENaC plays an essential role in control of blood pressure and normal gas exchange. In this paper, we discuss two major factors in ENaC regulation: (1) activity of individual ENaC and (2) number of ENaC located at the apical membrane

    The importance of central airway dilatation in patients with bronchiolitis obliterans

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    Background: Bronchiolitis obliterans (BO) is a clinical syndrome characterised by progressive small airway obstruction, causing significant morbidity and mortality. Central airway dilatation is one of its radiological characteristics, but little is known about the clinical and pathological associations between airway dilatation and BO. Methods: This retrospective study consecutively included patients who underwent lung transplantation due to BO at Kyoto University Hospital from 2009 to 2019. Demographic and histopathological findings of the resected lungs were compared between patients with and without airway dilatation measured by chest computed tomography (CT) at registration for lung transplantation. Results: Of a total of 38 included patients (median age, 30 years), 34 (89%) had a history of hematopoietic stem-cell transplantation, and 22 (58%) had airway dilatation based on CT. Patients with airway dilatation had a higher frequency of Pseudomonas aeruginosa isolation with greater residual volume than those without airway dilatation. Quantitative CT analysis revealed an increase in lung volume to predictive total lung capacity and a percentage of low attenuation volume <-950 HU at inspiration in association with the extent of airway dilatation. Airway dilatation on CT was associated with an increased number of bronchioles with concentric narrowing of the lumen and thickening of the subepithelium of the walls on histology. Conclusions: In patients with BO, airway dilatation may reflect increased residual volume or air trapping and pathological extent of obstructive bronchioles, accompanied by a risk of Pseudomonas aeruginosa isolation. More attention should be paid to the development of airway dilatation in the management of BO

    The Association of Postprandial Triglyceride Variability with Renal Dysfunction and Microalbuminuria in Patients with Type 2 Diabetic Mellitus: A Retrospective and Observational Study

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    Objective. We examined whether or not day-to-day variations in lipid profiles, especially triglyceride (TG) variability, were associated with the exacerbation of diabetic kidney disease. Methods. We conducted a retrospective and observational study. First, 527 patients with type 2 diabetes mellitus (DM) who had had their estimated glomerular filtration rate (eGFR) checked every 6 months since 2012 for over 5 years were registered. Variability in postprandial TG was determined using the standard deviation (SD), SD adjusted (Adj-SD) for the number of measurements, and maximum minus minimum difference (MMD) during the first three years of follow-up. The endpoint was a & GE;40% decline from baseline in the eGFR, initiation of dialysis or death. Next, 181 patients who had no micro- or macroalbuminuria in February 2013 were selected from among the 527 patients for an analysis. The endpoint was the incidence of microalbuminuria, initiation of dialysis, or death. Results. Among the 527 participants, 110 reached a & GE;40% decline from baseline in the eGFR or death. The renal survival was lower in the higher-SD, higher-Adj-SD, and higher-MMD groups than in the lower-SD, lower-Adj-SD, and lower-MMD groups, respectively (log-rank test p=0.0073, 0.0059, and 0.0195, respectively). A lower SD, lower Adj-SD, and lower MMD were significantly associated with the renal survival in the adjusted model (hazard ratio, 1.62, 1.66, 1.59; 95% confidence intervals, 1.05-2.53, 1.08-2.58, 1.04-2.47, respectively). Next, among 181 participants, 108 developed microalbuminuria or death. The nonincidence of microalbuminuria was lower in the higher-SD, higher-Adj-SD, and higher-MMD groups than in the lower-SD, lower-Adj-SD, and lower-MMD groups, respectively (log-rank test p=0.0241, 0.0352, and 0.0474, respectively). Conclusions. Postprandial TG variability is a novel risk factor for eGFR decline and the incidence of microalbuminuria in patients with type 2 DM

    A Case of Androgen Receptor-positive Triple Negative Breast Cancer with Good Response to Anti-androgen Therapy

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    Anti-androgen therapy has been proposed to be effective in the treatment of androgen receptor (AR)-positive triple negative breast cancer (TNBC). Herein, we report on the case of a 91-year-old female patient with AR-positive TNBC who underwent anti-androgen therapy and had a good response. Because of dementia, the patient lives in an aged care facility. It was here that a staff member noticed a mass with a rash on the patient\u27s breast. Consequently, the patient was sent for further examination. Ultrasonography revealed an irregularly shaped, indistinct hypoechoic mass measuring 19×18×9mm located in the upper outer quadrant of the left breast. Core needle biopsy (CNB) was performed and the mass was diagnosed as apocrine carcinoma. Further immunohistochemical analysis showed that the mass was AR-positive TNBC. Anti-androgen therapy was determined to be the optimal treatment option for this patient. The Institutional Review Board approval the off-label use of an anti-androgen for the treatment of this patient, who was subsequently treated with the anti-androgen flutamide. After 8 months, the size of the tumor had reduced to 15×9×5mm
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