132 research outputs found
Gender inequalities in research in public health and epidemiology in Spain (2007-2014)
Objetivo: Analizar las desigualdades de género en investigación en salud pública y epidemiología en España, en el periodo 2007-2014. Método: Estudio descriptivo según sexo de posiciones de liderazgo del Centro de Investigación Biomédica en Red (CIBER), especialmente en el área temática de epidemiología y salud pública (CIBERESP) en 2014; de sociedades científicas de salud pública (SESPAS) y epidemiología (SEE), 2009-2014; y de proyectos de investigación solicitados (13.320) y financiados (4699), e importes de convocatorias de Acción Estratégica en Salud (AES), 2007-2013. Resultados: Existe una clara infrarrepresentación de mujeres líderes y contratadas en investigación de excelencia en salud pública (CIBERESP), con predominio de los hombres en puestos de decisión. Aunque los proyectos de investigación de la Acción Estratégica en Salud (AES) liderados por mujeres han crecido ligeramente entre 2007 y 2013, entre los solicitados no alcanzan el 50%, con excepción de los de la Comisión de Salud Pública. La brecha de género es aún mayor en proyectos financiados. Los proyectos liderados por hombres tienen mayor probabilidad de obtener financiación, alcanzando el 29% en los de salud pública. Persiste una segregación horizontal de género en posiciones de reconocimiento científico en congresos de SESPAS y SEE. Conclusiones: La sobrerrepresentación de líderes masculinos en la investigación en salud pública en España debe entenderse como indicador y consecuencia del androcentrismo en las sociedades científicas y los grupos profesionales. Esta situación sexista pone en riesgo la existencia de productos y servicios innovadores desde la perspectiva de género que den respuestas a necesidades y demandas de toda la sociedad. Se necesitan más mujeres en investigación que tengan incorporada esta perspectiva.Objective: To analyse gender inequalities in research on public health and epidemiology in Spain for the period 2007-2014. Method: A descriptive study was conducted by sex of leadership positions in the Centre for Biomedical Research Network (CIBER), especially in the subject area of epidemiology and public health (CIBERESP) in 2014; scientific societies of public health (SESPAS) and epidemiology (SEE) 2009-2014; research projects requested (13,320) and financed (4,699), and monetary amounts of calls for Strategic Action in Health (AES), 2007-2013. Results: Women were clearly under-represented in positions of leadership and in research excellence in public health (CIBER), with a predominance of men in decision-making positions. Although research projects led by women in AES increased slightly between 2007 and 2013, among proposed projects this figure was less than 50%, with the exception of the public health commission. The gender gap was even greater in funded projects. Projects led by men were more likely to be funded, representing 29% in public health. There was also a persistence of horizontal gender segregation in positions of scientific recognition in the SESPAS and SEE Congresses. Conclusions: The overrepresentation of male leaders in public health research in Spain can be understood as an indicator and a consequence of androcentrism in scientific societies and professional groups. This sexist situation threatens the existence of innovative products and services from a gender perspective that respond to the needs and demands of society as a whole. More women are needed in research incorporating this perspective.Este trabajo ha recibido financiación parcial de la Acción Estratégica en Salud del Instituto de Salud Carlos III (Exp. PI12/00498) y Fondos FEDER
Colossal Magnetoresistant Materials: The Key Role of Phase Separation
The study of the manganese oxides, widely known as manganites, that exhibit
the ``Colossal'' Magnetoresistance (CMR) effect is among the main areas of
research within the area of Strongly Correlated Electrons. After considerable
theoretical effort in recent years, mainly guided by computational and
mean-field studies of realistic models, considerable progress has been achieved
in understanding the curious properties of these compounds. These recent
studies suggest that the ground states of manganite models tend to be
intrinsically inhomogeneous due to the presence of strong tendencies toward
phase separation, typically involving ferromagnetic metallic and
antiferromagnetic charge and orbital ordered insulating domains. Calculations
of the resistivity versus temperature using mixed states lead to a good
agreement with experiments. The mixed-phase tendencies have two origins: (i)
electronic phase separation between phases with different densities that lead
to nanometer scale coexisting clusters, and (ii) disorder-induced phase
separation with percolative characteristics between equal-density phases,
driven by disorder near first-order metal-insulator transitions. The coexisting
clusters in the latter can be as large as a micrometer in size. It is argued
that a large variety of experiments reviewed in detail here contain results
compatible with the theoretical predictions. It is concluded that manganites
reveal such a wide variety of interesting physical phenomena that their
detailed study is quite important for progress in the field of Correlated
Electrons.Comment: 76 pages, 21 PNG files with figures. To appear in Physics Report
Dissemination of Clonally Related Escherichia coli Strains Expressing Extended-Spectrum β-Lactamase CTX-M-15
E. coli ST131 and ST405 and multidrug-resistant IncFII plasmids may determine spread of this lactamase
The state of the Martian climate
60°N was +2.0°C, relative to the 1981–2010 average value (Fig. 5.1). This marks a new high for the record. The average annual surface air temperature (SAT) anomaly for 2016 for land stations north of starting in 1900, and is a significant increase over the previous highest value of +1.2°C, which was observed in 2007, 2011, and 2015. Average global annual temperatures also showed record values in 2015 and 2016. Currently, the Arctic is warming at more than twice the rate of lower latitudes
Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial
Background
Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy
Inter- and intrachromosomal asynchrony of cell division cycle events in root meristem cells of Allium cepa: possible connection with gradient of cyclin B-like proteins
Alternate treatments of Allium cepa root meristems with hydroxyurea (HU) and caffeine give rise to extremely large and highly elongated cells with atypical images of mitotic divisions, including internuclear asynchrony and an unknown type of interchromosomal asynchrony observed during metaphase-to-anaphase transition. Another type of asynchrony that cannot depend solely on the increased length of cells was observed following long-term incubation of roots with HU. This kind of treatment revealed both cell nuclei entering premature mitosis and, for the first time, an uncommon form of mitotic abnormality manifested in a gradual condensation of chromatin (spanning from interphase to prometaphase). Immunocytochemical study of polykaryotic cells using anti-β tubulin antibodies revealed severe perturbations in the microtubular organization of preprophase bands. Quantitative immunofluorescence measurements of the control cells indicate that the level of cyclin B-like proteins reaches the maximum at the G2 to metaphase transition and then becomes reduced during later stages of mitosis. After long-term incubation with low doses of HU, the amount of cyclin B-like proteins considerably increases, and a significant number of elongated cells show gradients of these proteins spread along successive regions of the perinuclear cytoplasm. It is suggested that there may be a direct link between the effects of HU-mediated deceleration of S- and G2-phases and an enhanced concentration of cyclin B-like proteins. In consequence, the activation of cyclin B-CDK complexes gives rise to an abnormal pattern of premature mitotic chromosome condensation with biphasic nuclear structures having one part of chromatin decondensed, and the other part condensed
Implementing and evaluating a regional strategy to improve testing rates in VA patients at risk for HIV, utilizing the QUERI process as a guiding framework: QUERI Series
<p>Abstract</p> <p>Background</p> <p>We describe how we used the framework of the U.S. Department of Veterans Affairs (VA) Quality Enhancement Research Initiative (QUERI) to develop a program to improve rates of diagnostic testing for the Human Immunodeficiency Virus (HIV). This venture was prompted by the observation by the CDC that 25% of HIV-infected patients do not know their diagnosis – a point of substantial importance to the VA, which is the largest provider of HIV care in the United States.</p> <p>Methods</p> <p>Following the QUERI steps (or process), we evaluated: 1) whether undiagnosed HIV infection is a high-risk, high-volume clinical issue within the VA, 2) whether there are evidence-based recommendations for HIV testing, 3) whether there are gaps in the performance of VA HIV testing, and 4) the barriers and facilitators to improving current practice in the VA.</p> <p>Based on our findings, we developed and initiated a QUERI step 4/phase 1 pilot project using the precepts of the Chronic Care Model. Our improvement strategy relies upon electronic clinical reminders to provide <it>decision support</it>; audit/feedback as a <it>clinical information system</it>, and appropriate changes in <it>delivery system design</it>. These activities are complemented by academic detailing and social marketing interventions to achieve <it>provider activation</it>.</p> <p>Results</p> <p>Our preliminary formative evaluation indicates the need to ensure leadership and team buy-in, address facility-specific barriers, refine the reminder, and address factors that contribute to inter-clinic variances in HIV testing rates. Preliminary unadjusted data from the first seven months of our program show 3–5 fold increases in the proportion of at-risk patients who are offered HIV testing at the VA sites (stations) where the pilot project has been undertaken; no change was seen at control stations.</p> <p>Discussion</p> <p>This project demonstrates the early success of the application of the QUERI process to the development of a program to improve HIV testing rates. Preliminary unadjusted results show that the coordinated use of audit/feedback, provider activation, and organizational change can increase HIV testing rates for at-risk patients. We are refining our program prior to extending our work to a small-scale, multi-site evaluation (QUERI step 4/phase 2). We also plan to evaluate the durability/sustainability of the intervention effect, the costs of HIV testing, and the number of newly identified HIV-infected patients. Ultimately, we will evaluate this program in other geographically dispersed stations (QUERI step 4/phases 3 and 4).</p
The institutions of archaic post-modernity and their organizational and managerial consequences: The case of Portugal
The long march of modernization of the Western societies tends to be presented as following a regular sequence: societies and institutions were pre-modern, and then they were modernized, eventually becoming post-modern. Such teleology may provide an incomplete or distorted narrative of societal evolution in many parts of the world, even in the ‘post-modern heartland’ of Western Europe, with Portugal being a case in point. The concept of archaic post-modernity has been developed by a philosopher, José Gil, to show how Portuguese institutions and organizations combine elements of pre-modernity and post-modernity. The notion of an archaic post-modernity is advanced in order to provide an alternative account of the modernization process, which enriches discussion of the varieties of capitalism. Differences in historical experiences create singularities that may be considered in the analysis of culture, management and organization
In-situ estimation of ice crystal properties at the South Pole using LED calibration data from the IceCube Neutrino Observatory
The IceCube Neutrino Observatory instruments about 1 km3 of deep, glacial ice at the geographic South Pole using 5160 photomultipliers to detect Cherenkov light emitted by charged relativistic particles. A unexpected light propagation effect observed by the experiment is an anisotropic attenuation, which is aligned with the local flow direction of the ice. Birefringent light propagation has been examined as a possible explanation for this effect. The predictions of a first-principles birefringence model developed for this purpose, in particular curved light trajectories resulting from asymmetric diffusion, provide a qualitatively good match to the main features of the data. This in turn allows us to deduce ice crystal properties. Since the wavelength of the detected light is short compared to the crystal size, these crystal properties do not only include the crystal orientation fabric, but also the average crystal size and shape, as a function of depth. By adding small empirical corrections to this first-principles model, a quantitatively accurate description of the optical properties of the IceCube glacial ice is obtained. In this paper, we present the experimental signature of ice optical anisotropy observed in IceCube LED calibration data, the theory and parametrization of the birefringence effect, the fitting procedures of these parameterizations to experimental data as well as the inferred crystal properties.</p
TXS 0506+056 with Updated IceCube Data
Past results from the IceCube Collaboration have suggested that the blazar TXS 0506+056 is a potential source of astrophysical neutrinos. However, in the years since there have been numerous updates to event processing and reconstruction, as well as improvements to the statistical methods used to search for astrophysical neutrino sources. These improvements in combination with additional years of data have resulted in the identification of NGC 1068 as a second neutrino source candidate. This talk will re-examine time-dependent neutrino emission from TXS 0506+056 using the most recent northern-sky data sample that was used in the analysis of NGC 1068. The results of using this updated data sample to obtain a significance and flux fit for the 2014 TXS 0506+056 "untriggered" neutrino flare are reported
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