3,857 research outputs found

    Do Exchange Rates Move in Line With Uncovered Interest Parity?

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    According to uncovered interest rate Parity (UIP), the expected relative change in an exchange rate is equal to the difference between interest rates between the two currencies. Empirically, UIP is frequently rejected. In this paper, we examine whether exchange rates have at least any tendency to move in the direction predicted by UIP and whether exchange rates tend to move more in line with UIP in periods with large interest rate differentials.Exchange rates;Uncovered interest rate parity;Logit models

    Oral cavity reconstruction with the masseter flap.

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    The purpose of this report is to highlight how an unusual, outdated, unpopular and overlooked reconstructive method such as the masseter flap can be a reliable, straightforward and effective solution for oral reconstruction in selected cases. We report the transposition of the masseter crossover flap in two previously pre-treated patients presenting a second primary oral squamous cell carcinoma; excellent functional results with satisfactory cosmetic appearance were obtained in both cases. In the literature, only 60 cases of oral cavity and oropharyngeal reconstructions using the masseter flap have been reported. The possible clinical utility of this flap, even in modern head and neck reconstructive surgery, is presented and discussed. We believe that the masseter flap should enter in the armamentarium of every head and neck surgeon and be kept in mind as a possible solution since it provides an elegant and extremely simple procedure in suboptimal cases for microvascular reconstruction

    Decrease of carbon tetrachloride (CCl4) over 2004-2013 as inferred from global occultation measurements with ACE-FTS

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    In this contribution, we use infrared solar occultation measurements performed by the ACE-FTS (Atmospheric Chemistry Experiment – Fourier Transform Spectrometer) instrument onboard the SCISAT-1 Canadian satellite (Bernath et al., 2005). Since its launch in August 2003, this spectrometer has been in continuous operation with no significant degradation of its performance, and global measurements are available from late February 2004 onwards, spanning now more than a decade

    Do Exchange Rates Move in Line With Uncovered Interest Parity?

    Get PDF
    According to uncovered interest rate Parity (UIP), the expected relative change in an exchange rate is equal to the difference between interest rates between the two currencies. Empirically, UIP is frequently rejected. In this paper, we examine whether exchange rates have at least any tendency to move in the direction predicted by UIP and whether exchange rates tend to move more in line with UIP in periods with large interest rate differentials

    Inhibition of fatty acid oxidation as a therapy for MYC-overexpressing triple-negative breast cancer.

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    Expression of the oncogenic transcription factor MYC is disproportionately elevated in triple-negative breast cancer (TNBC), as compared to estrogen receptor-, progesterone receptor- or human epidermal growth factor 2 receptor-positive (RP) breast cancer. We and others have shown that MYC alters metabolism during tumorigenesis. However, the role of MYC in TNBC metabolism remains mostly unexplored. We hypothesized that MYC-dependent metabolic dysregulation is essential for the growth of MYC-overexpressing TNBC cells and may identify new therapeutic targets for this clinically challenging subset of breast cancer. Using a targeted metabolomics approach, we identified fatty acid oxidation (FAO) intermediates as being dramatically upregulated in a MYC-driven model of TNBC. We also identified a lipid metabolism gene signature in patients with TNBC that were identified from The Cancer Genome Atlas database and from multiple other clinical data sets, implicating FAO as a dysregulated pathway that is critical for TNBC cell metabolism. We found that pharmacologic inhibition of FAO catastrophically decreased energy metabolism in MYC-overexpressing TNBC cells and blocked tumor growth in a MYC-driven transgenic TNBC model and in a MYC-overexpressing TNBC patient-derived xenograft. These findings demonstrate that MYC-overexpressing TNBC shows an increased bioenergetic reliance on FAO and identify the inhibition of FAO as a potential therapeutic strategy for this subset of breast cancer

    New surgical technique for endoscopic management of anterior glottic web.

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    In this study we report a new endoscopic technique for the management of anterior glottic web (AGW). Previously, various procedures with endoscopic or open surgical approaches have been described for the treatment of symptomatic AGW. We present an original, highly effective endoscopic technique that seems to have several advantages over traditional approaches.We used this novel technique in a preliminary series of four patients. Using a CO2 laser, a curvilinear mucosal flap based on the web is elevated from the superior surface of one vocal chord. The web is divided, and the flap is sutured at the inferior surface of the opposite vocal chord, ensuring that no raw surfaces will be left exposed on this side of the larynx. We accurately describe the technique, displaying diagrams of the surgical steps.In three cases, a restoration of the laryngeal airway, with complete resolution of the AGW, was achieved. A limited residual web persisted close to the anterior commissure in the fourth patient.The new endoscopic technique utilized in our preliminary series of patients is a simple, repeatable, and effective surgical procedure for managing AGW

    Nouvelles techniques de préparation des vertisols en culture maraîchère à la Martinique. Incidences pédologiques et agroéconomiques

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    Les pratiques maraîchères intensives développées sur les vertisols de la Martinique sont remises en cause car la production se fait au détriment du sol : par rapport aux prairies intensifiées qui permettent la conservation et même la réhabilitation du milieu, les labours des parcelles maraîchères diminuent les teneurs en carbone et augmentent leur érodibilité. Notre objectif est de proposer des pratiques qui préservent les sols et la production tout en restant rentables. Par rapport aux labours, notre étude montre en premier lieu que des préparations plus superficielles limitent la diminution des stocks organiques, facilitent le drainage et préservent mieux I'activité biologique ; en deuxième lieu, ces préparations ne provoquent pas de diminution significative des rendements, troisièmement, elles réduisent le temps de travail, les charges de mécanisation de 26 à 65 % et l'investissement en matériel jusqu'à 40 %. Les préparations superficielles sont plus rentables et préservent mieux le sol mais les risques de perte en terre persistent. La mise en place de rotations maraîchage/pâturage permettrait le maintien d'une production élevée et une gestion réellement durable du milieu. (Résumé d'auteur
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