266 research outputs found

    Combination of Immunotherapy and Radiotherapy-The Next Magic Step in the Management of Lung Cancer?

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    none4sinoneHendriks L.E.L.; Menis J.; De Ruysscher D.K.M.; Reck M.Hendriks, L. E. L.; Menis, J.; De Ruysscher, D. K. M.; Reck, M

    Growth hormone-releasing hormone resistance in pseudohypoparathyroidism type Ia: New evidence for imprinting of the Gsα gene

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    Heterozygous inactivating mutations in the Gs\u3b1 gene cause Albright's hereditary osteodystrophy. Consistent with the observation that only maternally inherited mutations lead to resistance to hormone action [pseudohypoparathyroidism type Ia (PHP Ia)], recent studies provided evidence for a predominant maternal origin of Gs\u3b1 transcripts in endocrine organs, such as thyroid, gonad, and pituitary. The aim of this study was to investigate the presence of pituitary resistance to hypothalamic hormones acting via Gs\u3b1-coupled receptors in patients with PHP Ia. Six of nine patients showed an impaired GH responsiveness to GHRH plus arginine, consistent with a complete GH deficiency (GH peak from 2.6-8.6 \u3bcg/liter, normal > 16.5), and partial (GH peak 13.9 and 13.6 \u3bcg/liter) and normal responses were found in two and one patient, respectively. Accordingly, IGF-I levels were below and in the low-normal range in seven and two patients. All patients had a normal cortisol response to 1 \u3bcg ACTH test, suggesting a normal corticotroph function that was confirmed by a normal ACTH and cortisol response to CRH test in three patients. In conclusion, we report that in addition to PTH and TSH resistance, patients with PHP Ia display variable degrees of GHRH resistance, consistent with Gs\u3b1 imprinting in human pituitary

    The Short-term Car Flow Planning Model in Rail Freight Company – Case Study

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    AbstractWith the promotion of the environmentally friendly transportation modes (the European Commission supports the freight transport operations in the rail sector), an increase in the diversification of the demand is observed. While most rail freight companies tend to apply fixed schedules, this approach is not effective turns out to be ineffective due to the need to meet the customer's specific requirements.The purpose of this paper is to present a case study of empty wagon flow planning over a medium term horizon and to discuss the opportunities of improvement of this plans by discrete optimization. In order to increase the utilization and availability of wagons, the planning procedure with a rolling horizon has to be implemented. Unfortunately, since the plan has to be updated ca. every 4hours, this planning approach needs effective optimization tools. Our hybrid two-stage approach is designed to be implemented in such business environment. This formulation allows us to solve real life instances even for a 7-day time horizon

    A computational index derived from whole-genome copy number analysis is a novel tool for prognosis in early stage lung squamous cell carcinoma.

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    AbstractSquamous cell carcinoma of the lung is remarkable for the extent to which the same chromosomal abnormalities are detected in individual tumours. We have used next generation sequencing at low coverage to produce high resolution copy number karyograms of a series of 89 non-small cell lung tumours specifically of the squamous cell subtype. Because this methodology is able to create karyograms from formalin-fixed paraffin-embedded material, we were able to use archival stored samples for which survival data were available and correlate frequently occurring copy number changes with disease outcome. No single region of genomic change showed significant correlation with survival. However, adopting a whole-genome approach, we devised an algorithm that relates to total genomic damage, specifically the relative ratios of copy number states across the genome. This algorithm generated a novel index, which is an independent prognostic indicator in early stage squamous cell carcinoma of the lung

    Ionization Probabilities through ultra-intense Fields in the extreme Limit

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    We continue our investigation concerning the question of whether atomic bound states begin to stabilize in the ultra-intense field limit. The pulses considered are essentially arbitrary, but we distinguish between three situations. First the total classical momentum transfer is non-vanishing, second not both the total classical momentum transfer and the total classical displacement are vanishing together with the requirement that the potential has a finite number of bound states and third both the total classical momentum transfer and the total classical displacement are vanishing. For the first two cases we rigorously prove, that the ionization probability tends to one when the amplitude of the pulse tends to infinity and the pulse shape remains fixed. In the third case the limit is strictly smaller than one. This case is also related to the high frequency limit considered by Gavrila et al.Comment: 16 pages LateX, 2 figure

    Análisis del periodo de lluvias a nivel nacional 2021 – 2022. Informe Técnico

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    El presente informe es una fuente referencial con información y datos sobre la base de los sistemas de observación del SENAMHI-Perú, que describen las condiciones climáticas predominantes durante el periodo de lluvias 2021 – 2022, a través de los principales productos operativos de vigilancia climática. Asimismo, el informe describe las condiciones océano atmosférico que modularon el periodo lluvioso, y detalla los eventos extremos de lluvia que ocasionaron deslizamientos, inundaciones y/o desbordes a nivel nacional. Durante el periodo de lluvias 2021-2022, concurrieron escenarios contrastantes de déficits y superávit de lluvias en diferentes regiones del país; el sector oriental de los Andes se caracterizó por presentar lluvias frecuentes y superávits con anomalías de +15% a +100%; en contraste, el sector occidental presentó veranillos entre fines de diciembre y enero con deficiencias entre -100% a -60%, para luego presentar lluvias un tanto más frecuentes entre febrero hasta los primeros días de abril. Se resalta las acentuadas deficiencias en Tumbes, Piura, Lambayeque y La Libertad respecto a los demás departamentos a nivel nacional. Durante el verano, periodo de lluvias máximas, se reportaron derrumbes, deslizamientos de tierra e inundaciones que desafortunadamente causaron pérdidas de vidas humanas y graves daños a la infraestructura, medios de vida de la población y daños irreparables a Centros Arqueológicos, p. ej., el derrumbe del Complejo Arqueológico de Kuélap en la Región Amazonas

    Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

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    We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|η\eta|<0.8) and transverse momentum range 0.2< pTp_{\rm T}< 5.0 GeV/cc. The elliptic flow signal v2_2, measured using the 4-particle correlation method, averaged over transverse momentum and pseudorapidity is 0.087 ±\pm 0.002 (stat) ±\pm 0.004 (syst) in the 40-50% centrality class. The differential elliptic flow v2(pT)_2(p_{\rm T}) reaches a maximum of 0.2 near pTp_{\rm T} = 3 GeV/cc. Compared to RHIC Au-Au collisions at 200 GeV, the elliptic flow increases by about 30%. Some hydrodynamic model predictions which include viscous corrections are in agreement with the observed increase.Comment: 10 pages, 4 captioned figures, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/389
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