270 research outputs found

    A study to determine the optimum design of a photographic film for the lunar surface hand-held camera Final report

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    Design, and processing of photographic film for lunar surface hand operated camer

    Finite-thrust transfer in the two and three body problems Final report

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    Computer program for optimal finite thrust transfer between two orbit

    Structure and sequence divergence of two archaebacterial genes.

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    Quasilinearization program for determining optimum finite-thrust transfers between inclined orbits

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    Quasi-linearization program for boundary value problem of minimum fuel orbital transfe

    Lecturas de política monetaria y financiera

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    1 archivo PDF (487 páginas)Conjunto de trabajos de investigadores especializados en teoría monetaria y financiera, que presentan un análisis teórico y empírico de los cambios de la economía mexicana, propuestas y críticas tanto de los procesos mismos cómo de las políticas con que enfrentan las autoridades monetarias nacionales el reto que implica la mayor integración del sistema mexicano al internacional. Las investigaciones se agrupan en seis secciones temáticas: Política monetaria y cambiaria; Influencia de los flujos internacionales de capital; La política monetaria y sus relaciones con la inflación; Sector financiero, crisis y política económica; Sector bursátil y Marco Legal

    Experiencia en el despliegue del piloto de galen clínicas en los laboratorios del instituto de hematología e inmunología

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    SOFTEL, es la empresa encargada por el Ministerio de las Comunicaciones de informatizar las entidades de Salud Pública. Para ello se han desarrollado varias aplicaciones, para ser desplegadas en hospitales, clínicas, policlínicos y bancos de sangre, fundamentalmente. Específicamente los laboratorios constituyen un área muy sensible debido a que en ellos se realizan todos los medios diagnósticos, que resultan de gran utilidad el almacenamiento de esta información para futuros estudios de los pacientes. Este trabajo expone la experiencia obtenida en el despliegue de dicho módulo, como una primera experiencia, conocida como despliegue de piloto o prueba beta. Esta experiencia sirve de base para las futuras instalaciones en otros clientes, reportó una serie de inconformidades que se resolvieron antes de concluir el mismo y finalmente quedo concluido el despliegue. Este tuvo complicaciones relacionadas con la existencia de laboratorios fuera del área de cobertura del Instituto y la preparación de las interfaces con los diferentes auto analizadores. Palabras Clave: galen laboratoriosssss, galen clínicas, piloto de software, auto analizadores

    GLOWORM-PARA: a flexible framework to simulate the population dynamics of the parasitic phase of gastrointestinal nematodes infecting grazing livestock

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    Gastrointestinal (GI) nematodes are a significant threat to the economic and environmental sustainability of keeping livestock, as adequate control becomes increasingly difficult due to the development of anthelmintic resistance (AR) in some systems and climate-driven changes to infection dynamics. To mitigate any negative impacts of climate on GI nematode epidemiology and slow AR development, there is a need to develop effective, targeted control strategies that minimise the unnecessary use of anthelmintic drugs and incorporate alternative strategies such as vaccination and evasive grazing. However, the impacts climate and GI nematode epidemiology may have on the optimal control strategy are generally not considered, due to lack of available evidence to drive recommendations. Parasite transmission models can support control strategy evaluation to target field trials, thus reducing the resources and lead-time required to develop evidence-based control recommendations incorporating climate stochasticity. GI nematode population dynamics arising from natural infections have been difficult to replicate and model applications have often focussed on the free-living stages. A flexible framework is presented for the parasitic phase of GI nematodes, GLOWORM-PARA, which complements an existing model of the free-living stages, GLOWORM-FL. Longitudinal parasitological data for two species that are of major economic importance in cattle, Ostertagia ostertagi and Cooperia oncophora, were obtained from seven cattle farms in Belgium for model validation. The framework replicated the observed seasonal dynamics of infection in cattle on these farms and overall, there was no evidence of systematic under- or over-prediction of faecal egg counts (FECs). However, the model under-predicted the FECs observed on one farm with very young calves, highlighting potential areas of uncertainty that may need further investigation if the model is to be applied to young livestock. The model could be used to drive further research into alternative parasite control strategies such as vaccine development and novel treatment approaches, and to understand GI nematode epidemiology under changing climate and host management

    Lowering β-Amyloid Levels Rescues Learning and Memory in a Down Syndrome Mouse Model

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    β-amyloid levels are elevated in Down syndrome (DS) patients throughout life and are believed to cause Alzheimer's disease (AD) in adult members of this population. However, it is not known if β-amyloid contributes to intellectual disability in younger individuals. We used a γ-secretase inhibitor to lower β-amyloid levels in young mice that model DS. This treatment corrected learning deficits characteristic of these mice, suggesting that β-amyloid-lowering therapies might improve cognitive function in young DS patients

    Job stress and job satisfaction of physicians, radiographers, nurses and physicists working in radiotherapy: a multicenter analysis by the DEGRO Quality of Life Work Group

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    Background Ongoing changes in cancer care cause an increase in the complexity of cases which is characterized by modern treatment techniques and a higher demand for patient information about the underlying disease and therapeutic options. At the same time, the restructuring of health services and reduced funding have led to the downsizing of hospital care services. These trends strongly influence the workplace environment and are a potential source of stress and burnout among professionals working in radiotherapy. Methods and patients A postal survey was sent to members of the workgroup "Quality of Life" which is part of DEGRO (German Society for Radiooncology). Thus far, 11 departments have answered the survey. 406 (76.1%) out of 534 cancer care workers (23% physicians, 35% radiographers, 31% nurses, 11% physicists) from 8 university hospitals and 3 general hospitals completed the FBAS form (Stress Questionnaire of Physicians and Nurses; 42 items, 7 scales), and a self-designed questionnaire regarding work situation and one question on global job satisfaction. Furthermore, the participants could make voluntary suggestions about how to improve their situation. Results Nurses and physicians showed the highest level of job stress (total score 2.2 and 2.1). The greatest source of job stress (physicians, nurses and radiographers) stemmed from structural conditions (e.g. underpayment, ringing of the telephone) a "stress by compassion" (e.g. "long suffering of patients", "patients will be kept alive using all available resources against the conviction of staff"). In multivariate analyses professional group (p < 0.001), working night shifts (p = 0.001), age group (p = 0.012) and free time compensation (p = 0.024) gained significance for total FBAS score. Global job satisfaction was 4.1 on a 9-point scale (from 1 – very satisfied to 9 – not satisfied). Comparing the total stress scores of the hospitals and job groups we found significant differences in nurses (p = 0.005) and physicists (p = 0.042) and a borderline significance in physicians (p = 0.052). In multivariate analyses "professional group" (p = 0.006) and "vocational experience" (p = 0.036) were associated with job satisfaction (cancer care workers with < 2 years of vocational experience having a higher global job satisfaction). The total FBAS score correlated with job satisfaction (Spearman-Rho = 0.40; p < 0.001). Conclusion Current workplace environments have a negative impact on stress levels and the satisfaction of radiotherapy staff. Identification and removal of the above-mentioned critical points requires various changes which should lead to the reduction of stress
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