Influence of oxygen supply on the susceptibility of cv. Palomino fino must to browning

Experiments have been conducted on the oxidation of must (cv. Palomino fine). At the initial decanting process prior to fermentation, wines produced from hyperoxidized must had a reduced content of oxidable polyphenolic compounds and a reduced tendency to browning; they maintained these characteristics after bottling. Intermediate doses and the combined use of oxygen and sulphur dioxide were not fully effective in resolving the problem of browning for must of this grape variety, The larger the dose of oxygen (30 mg.l-1), the less the content of hydroxycinnamic esters and the lower the oxidizability, This dose was appropriate for producing a "fino" sherry wine with a low tendency to browning, retaining the sensory characteristics of this particular type of wine

Single Stellar Populations in the Near-Infrared - I. Preparation of the IRTF spectral stellar library

We present a detailed study of the stars of the IRTF spectral library to understand its full extent and reliability for use with Stellar Population (SP) modeling. The library consist of 210 stars, with a total of 292 spectra, covering the wavelength range of 0.94 to 2.41 micron at a resolution R = 2000. For every star we infer the effective temperature (Teff), gravity (logg) and metallicity ([Z/Zsun]) using a full-spectrum fitting approach in a section of the K band (2.19 to 2.34 micron) and temperature-NIR colour relations. We test the flux calibration of these stars by calculating their integrated colours and comparing them with the Pickles library colour-temperature relations. We also investigate the NIR colours as a function of the calculated effective temperature and compared them in colour-colour diagrams with the Pickles library. This latter test shows a good broad-band flux calibration, important for the SP models. Finally, we measure the resolution R as a function of wavelength. We find that the resolution increases as a function of lambda from about 6 angstrom in J to 10 angstrom in the red part of the K-band. With these tests we establish that the IRTF library, the largest currently available general library of stars at intermediate resolution in the NIR, is an excellent candidate to be used in stellar population models. We present these models in the next paper of this series.Comment: 17 pages, 19 figures. Accepted for publication in Astronomy and Astrophysic

Inelaticity in hadron-nucleus collisions from emulsion chamber studies

The inelasticity of hadron-carbon nucleus collisions in the energy region exceeding 100 TeV is estimated from the carbon-emulsion chamber data at Pamirs to be $= 0.65\pm 0.08$. When combined with the recently presented data on hadron-lead nucleus collisions taken at the same energy range it results in the $K\sim A^{0.086}$ mass number dependence of inelasticity. The evaluated partial inelasticity for secondary ($\nu > 1$) interactions, $K_{\nu >1} \simeq 0.2$, suggests that the second and higher interactions of the excited hadron inside the nucleus proceed with only slight energy losses.Comment: LaTeX file and 5 LaTeX files with figures, 11 pages altogether. Thoroughly rewritten and modified, one figure addded one removed. To be published in Phys. Rev.

Early or Delayed Enteral Feeding for Infants with Abnormal Antenatal Doppler Flow Patterns

Introdução: O principal objetivo deste estudo foi determinar o efeito da introdução de alimentação entérica precoce comparado com introdução tardia, na incidência de morbilidade gastrointestinal e tempo até alimentação entérica total, em recém- -nascidos com alteração de fluxos em ecografia pré-natal. Métodos: Análise retrospetiva dos recém-nascidos internados numa unidade de cuidados intensivos neonatais de nível III, em Portugal, entre janeiro de 2004 e dezembro de 2013 com alteração de fluxos em ecografia pré-natal. Foram criados dois grupos baseados no tempo até introdução de primeira alimentação entérica: grupo de alimentação precoce (≤48 horas) e grupo de alimentação tardia (> 48 horas). Os resultados principais foram morbilidade gastrointestinal e mortalidade devido a complicações gastrointestinais. Resultados: Foram incluídos 46 (47%) de recém-nascidos no grupo de alimentação precoce e 52 (53%) no grupo de alimentação tardia. Não houve diferenças significativas na morbilidade gastrointestinal, incluindo enterocolite necrosante, perfuração ou cirurgia gastrointestinal, íleus séptico ou intolerância alimentar. A alimentação precoce resultou numa diminuição significativa da sepsis tardia (p=0,016; odds ratio 0,276; intervalo de confiança 95% 0,096-0,789). Discussão: A introdução precoce de alimentação entérica poderá não ter efeitos significativos na incidência de morbilidade gastrointestinal em recém-nascidos com alteração de fluxos em ecografia pré-natal. Houve uma redução significativa na sepsis tardia, sem condicionar um aumento de risco de morbilidade gastrointestinal.Introduction: The main objective of this study was to determine the effect of early versus late enteral feeding on the incidence of gastrointestinal morbidity and on time to establish full enteral feeding in neonates with abnormal antenatal Doppler flow patterns. Methods: We retrospectively analysed neonates admitted to a level III neonatal intensive care unit in Portugal between January 2004 and December 2013 with abnormal antenatal Doppler flow patterns. Two groups were created based on the time of first enteral feeding: early feeding group (≤48 hours) and late feeding group (> 48 hours). Primary outcomes were gastrointestinal morbidity and death due to gastrointestinal complications. Results: Forty-six (47%) infants were included in the early feeding group and 52 (53%) in the late feeding group. There was no statistical difference in gastrointestinal morbidity, including necrotising enterocolitis, gastrointestinal perforation or surgery, septic ileus or feeding intolerance. Early feeding resulted in a significant decrease in late-onset sepsis (p=0.016; odds ratio 0.276; 95% confidence interval 0.096-0.789). Discussion: Early introduction of enteral feeding may not have a significant effect on the incidence of gastrointestinal morbidity in neonates with abnormal antenatal Doppler flow patterns. There was a significant reduction in late-onset sepsis, without incurring an increased risk of gastrointestinal morbidity.info:eu-repo/semantics/publishedVersio

The Offline Software Framework of the Pierre Auger Observatory

The Pierre Auger Observatory is designed to unveil the nature and the origins of the highest energy cosmic rays. The large and geographically dispersed collaboration of physicists and the wide-ranging collection of simulation and reconstruction tasks pose some special challenges for the offline analysis software. We have designed and implemented a general purpose framework which allows collaborators to contribute algorithms and sequencing instructions to build up the variety of applications they require. The framework includes machinery to manage these user codes, to organize the abundance of user-contributed configuration files, to facilitate multi-format file handling, and to provide access to event and time-dependent detector information which can reside in various data sources. A number of utilities are also provided, including a novel geometry package which allows manipulation of abstract geometrical objects independent of coordinate system choice. The framework is implemented in C++, and takes advantage of object oriented design and common open source tools, while keeping the user side simple enough for C++ novices to learn in a reasonable time. The distribution system incorporates unit and acceptance testing in order to support rapid development of both the core framework and contributed user code.Comment: 4 pages, 2 figures, presented at IEEE NSS/MIC, 23-29 October 2005, Puerto Ric

Superconducting cavity transducer for resonant gravitational radiation antennas

Parametric transducers, such as superconducting rf cavities, can boost the bandwidth and sensitivity of the next generation resonant antennas, thanks to a readily available technology. We have developed a fully coupled dynamic model of the system "antenna--transducer" and worked out some estimates of signal--to--noise ratio and the stability conditions in various experimental configurations. We also show the design and the prototype of a rf cavity which, together with a suitable read--out electronic, will be used as a test bench for the parametric transducer.Comment: 7 pages, 3 eps figures. Presented at the 6th Amaldi Conference on Gravitational Waves (2005). Accepted for publication in Journal of Physics: Conference Serie

Prophylactic Use of Liposomal Amphotericin B in Preventing Fungal Infections Early After Liver Transplantation: a Retrospective, Single-Center Study

In this study the authors evaluated the efficacy of prophylaxis with liposomal amphotericin B (L-AmB) in the incidence of fungal infections (FI) during the first 3 months after liver transplant (LT). The study was retrospective and accessed a 4-year period from 2008 to 2011. All patients who died in the first 48 hours after LT were excluded. Patients were divided by the risk groups for FI: Group 1, high-risk (at least 1 of the following conditions: urgent LT; serum creatinine >2 mg/dL; early acute kidney injury [AKI] after LT; retransplantation; surgical exploration early post-LT; transfused cellular blood components [>40 U]); and Group 2, low-risk patients. Group 1 patients were further separated into those who received antifungal prophylaxis with L-AmB and those who did not. Prophylaxis with L-AmB consisted of intravenous administration of L-AmB, 100 mg daily for 14 days. Four hundred ninety-two patients underwent LT; 31 died in the first 48 hours after LT. From the remaining 461 patients, 104 presented with high-risk factors for FI (Group 1); of these, 66 patients received antifungal prophylaxis and 38 did not. In this group 8 FI were observed, 5 in patients without antifungal prophylaxis (P = .011). Three more FI were identified in Group 2. By logistic regression analysis, the categorical variable high-risk group was independently related to the occurrence of invasive FI (P = .006). We conclude that prophylaxis with L-AmB after LT was effective in reducing the incidence of FI. No influence on mortality was detected