50 research outputs found

    Pointing Out Some Issues Regarding Reproduction Management in Murciano-Granadina Goats

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    [EN] The hypothesis of this experiment proposes that it could be possible to identify pregnant goats through maximum progesterone milk levels at any time in the pregnancy, and that there is an optimal moment to apply a lactation inhibitor to dry off lactating goats. The maximum progesterone concentration in milk varied depending on the season of the year, and those concentrations were similar for pregnant and non-pregnant goats, but significantly higher in the case of gestating goats with four foetuses, for which it would be possible to distinguish the pregnancy. The milk yield of goats at mating does not affect fertility until a value of at least 3250 mL/day. If using lactation inhibitors, their application up to the 10th week post-mating would be optimal for drying off lactating goats. Two of the most important problems in high-yielding dairy goat farms are early and accurate pregnancy diagnosis and the appropriate dry off of lactating does before the next kidding. The hypothesis posits that it could be possible to identify pregnant does through maximum progesterone milk levels at any time during the pregnancy, and that there is an optimal time to apply a lactation inhibitor to help dry off lactating does. Therefore, 114 Murciano-Granadina breed goats were used, from which 74 goats were inseminated at week 20 of lactation and samples of milk from pregnant and non-pregnant goats were taken at two-week intervals. The average maximum progesterone milk levels were higher outside the natural breeding season (40 degrees latitude) than in the breeding season (11.6 +/- 1.13 vs. 8.6 +/- 1.02 ng/mL), although the levels from pregnant and non-pregnant goats were similar (10.85 +/- 1.3 vs. 9.74 +/- 1.6 ng/mL), except in the case of pregnancy with four foetuses (12.5 +/- 1.3 ng/mL). Milk yield at mating does not affect fertility until a value of at least 3250 mL/day. Pregnancy started to affect milk yield up to the +7th week and was 59.9% lower in the +10th week after mating, so the use of lactation inhibitors could be more effective from this latter week. In conclusion, the results show that it is not possible to detect gestation in goats reliably through the maximum concentration of progesterone in milk at any time during lactation, except in the case of goats gestating four foetuses, that the milk yield of goats at mating does not affect fertility until a value of at least 3250 mL/day, and that from the 10th week post-mating, the application of lactation inhibitors would be optimal.This research was funded by the project RTA2017-00049-C02-02 (Agencia Estatal de Investigación) with ERDF funds.Fernández Martínez, N.; Beltrán Martínez, MC.; Romero, G.; Roca, MA.; Rodríguez Garcia, M.; Balasch Parisi, S. (2021). Pointing Out Some Issues Regarding Reproduction Management in Murciano-Granadina Goats. Animals. 11(6):1-13. https://doi.org/10.3390/ani11061781S11311

    Manual d'injecció higiènica per a professionals

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    Drogadicción; Vía parenteral; ConsejosDrogoaddicció; Via parenteral; ConsellsDrug addiction; Parenteral tract; AdvicesManual que ofereix una descripció detallada dels consells que es poden donar als consumidors per via parenteral sobre un ús més segur de les drogues. Està plantejat des de la perspectiva de la reducció de danys,que es basa en anar pujant petits, però més realistes i factibles,esglaons que allunyin cada cop més els consumidors d’un ús insalubre i perillós, apropant-los a un altre de més saludable,on, al final de l’escala, estaria l’abandonament d’un consum patològic i addictiu. Està dirigit als professionals no exclusivament sanitaris que treballen amb usuaris de drogues il·legals, amb l’objectiu que aquelles persones que optin per continuar-ne consumint per via parenteral, com a mínim ho facin reduint o eliminant aquells hàbits d’injecció nocius que presenten riscos importants per a la salut.Manual que ofrece una descripción detallada de los consejos que se pueden dar a los consumidores por vía parenteral sobre un uso mas seguro de las drogas. Esta planteado desde la perspectiva de la reducción de daños, que se basa en ir subiendo pequeños, pero mas realistas y factibles, peldaños que alejen cada vez mas a los consumidores de un uso insalubre y peligroso, acercándolos a otro de mas saludable, donde, al final de la escalera, estaría el abandonamiento de un consumo patológico y adictivo. Está dirigido a los profesionales no exclusivamente sanitarios que trabajan con usuarios de drogas ilegales, con el objetivo que esas personas que optan para continuar consumiendo por vía parental, como mínimo lo hagan reduciendo aquellos hábitos de inyección nocivos que presenten riesgos importantes para la salud

    Aplicación del Aprendizaje Basado en Problemas (ABP) en una asignatura del Máster Universitario de Ingeniería Industrial: propuesta metodológica y de evaluación

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    [ES] En la asignatura “Tecnología Química Industrial” del Máster Universitario en Ingeniería Industrial de la Universitat Politécnica de València (UPV) se imparten contenidos relativos a las Operaciones Básicas de la Ingeniería Química, no estudiados previamente por la mayoría de los alumnos. Este hecho, unido a las complicaciones asociadas a la media de 300 alumnos que tiene la asignatura, condiciona el tipo de metodologías que se pueden aplicar y, por lo tanto, el nivel de profundidad en el que se pueden desarrollar los contenidos. Por ello, la metodología principal aplicada hasta el momento ha sido la lección magistral participativa, con resolución de problemas en el aula. Aunque los resultados en cuanto a porcentaje de alumnos que superan la asignatura son muy satisfactorios, el enfoque de aprendizaje es muy superficial y creemos que debería adecuarse más al nivel de máster de la asignatura. Para conseguir un aprendizaje más profundo, se ha decido modificar parcialmente la metodología de la asignatura, integrando el Aprendizaje Basado en Problemas (ABP). En este trabajo se describe cómo se va a implementar y evaluar la metodología ABP en la asignatura. Todo ello forma parte de un Proyecto de Innovación y Mejora Educativa concedido por el VECA de la UPV.[EN] In the subject "Industrial Chemical Technology" of the Master's Degree in Industrial Engineering of the Polytechnic University of Valencia (UPV) content related to the Basic Operations of Chemical Engineering is taught, not previously studied by the most students. This fact, together with the complications associated with the average of 300 students that the subject has, conditions the type of methodologies that can be applied and, therefore, the level of depth at which the contents can be developed. Therefore, the main methodology applied so far has been the participatory master lesson, with problem solving in the classroom. Although the results in terms of percentage of students who pass the subject are very satisfactory, the learning approach is very superficial and we believe that it should be more adapted to the master's level of the subject. To achieve a deeper learning, it has been decided to partially modify the methodology of the subject, integrating the Problem Based Learning (BPL). This work describes how the BPL methodology will be implemented and evaluated in the subject. All this is part of an Innovation and Educational Improvement Project granted by the VECA of the UPV.Sancho, M.; García-Fayos, B.; García-Castelló, EM.; Martí-Calatayud, MC.; Rodríguez-López, AD.; Bes-Piá, A.; Mendoza-Roca, JA.... (2021). Aplicación del Aprendizaje Basado en Problemas (ABP) en una asignatura del Máster Universitario de Ingeniería Industrial: propuesta metodológica y de evaluación. En IN-RED 2020: VI Congreso de Innovación Educativa y Docencia en Red. Editorial Universitat Politècnica de València. 945-957. https://doi.org/10.4995/INRED2020.2020.12004OCS94595

    Role of age and comorbidities in mortality of patients with infective endocarditis

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    [Purpose]: The aim of this study was to analyse the characteristics of patients with IE in three groups of age and to assess the ability of age and the Charlson Comorbidity Index (CCI) to predict mortality. [Methods]: Prospective cohort study of all patients with IE included in the GAMES Spanish database between 2008 and 2015.Patients were stratified into three age groups:<65 years,65 to 80 years,and ≥ 80 years.The area under the receiver-operating characteristic (AUROC) curve was calculated to quantify the diagnostic accuracy of the CCI to predict mortality risk. [Results]: A total of 3120 patients with IE (1327 < 65 years;1291 65-80 years;502 ≥ 80 years) were enrolled.Fever and heart failure were the most common presentations of IE, with no differences among age groups.Patients ≥80 years who underwent surgery were significantly lower compared with other age groups (14.3%,65 years; 20.5%,65-79 years; 31.3%,≥80 years). In-hospital mortality was lower in the <65-year group (20.3%,<65 years;30.1%,65-79 years;34.7%,≥80 years;p < 0.001) as well as 1-year mortality (3.2%, <65 years; 5.5%, 65-80 years;7.6%,≥80 years; p = 0.003).Independent predictors of mortality were age ≥ 80 years (hazard ratio [HR]:2.78;95% confidence interval [CI]:2.32–3.34), CCI ≥ 3 (HR:1.62; 95% CI:1.39–1.88),and non-performed surgery (HR:1.64;95% CI:11.16–1.58).When the three age groups were compared,the AUROC curve for CCI was significantly larger for patients aged <65 years(p < 0.001) for both in-hospital and 1-year mortality. [Conclusion]: There were no differences in the clinical presentation of IE between the groups. Age ≥ 80 years, high comorbidity (measured by CCI),and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the <65-year group

    Abundances of Be Stars in Very Young Open Clusters

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    The Be Phenomenon in Early-Type Stars, IAU Colloquium 175, ASP Conference Proceedings, Vol. 214, edited by Myron A. Smith and Huib F. Henrichs. Astronomical Society of the Pacific, ISBN 1-58381-045-5, 2000, p.59We present here standard uvbyβ CCD photometry for five open clusters of the Galaxy in order to determine abundances of Be stars, as a function of age

    A Spectroscopic Study of HD 89890

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    Highlights of Spanish astrophysics II, Proceedings of the 4th Scientific Meeting of the Spanish Astronomical Society (SEA), held in Santiago de Compostela, Spain, September 11-14, 2000, Dordrecht: Kluwer Academic Publishers, 2001 xxii, 409 p. Edited by Jaime Zamorano, Javier Gorgas, and Jesus Gallego. ISBN 0792369742, p.398An important problem in the study of the spectrum of some early-type stars is the presence of an envelope. For these kinds of stars the spectrum is formed by convolution of both, central star and envelope. The decoupling of these two components is not straightforward. We are currently investigating high resolution spectra of a number of bright stars trying to perform such decoupling by fitting of synthetic spectra. Our first study shows that HD 89890 (J Vel) have the Hα line in absorption. The envelope, if present, should be small. Therefore, we can assume that higher Balmer lines belong to photosphere of the central star approximately, and this star is a good candidate to test the analysis method

    Using Mixed Reality for the Visualization and Dissemination of Complex 3D Models in Geosciences&mdash;Application to the Montserrat Massif (Spain)

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    In the last two decades, both the amount and quality of geoinformation in the geosciences field have improved substantially due to the increasingly more widespread use of techniques such as Laser Scanning (LiDAR), digital photogrammetry, unmanned aerial vehicles, geophysical reconnaissance (seismic, electrical, geomagnetic), and ground-penetrating radar (GPR), among others. Furthermore, the advances in computing, storage and visualization resources allow the acquisition of 3D terrain models (surface and underground) with unprecedented ease and versatility. However, despite these scientific and technical developments, it is still a common practice to simplify the 3D data in 2D static images, losing part of its communicative potential. The objective of this paper is to demonstrate the possibilities of extended reality (XR) for communication and sharing of 3D geoinformation in the field of geosciences. A brief review of the different variants within XR is followed by the presentation of the design and functionalities of headset-type mixed reality (MR) devices, which allow the 3D models to be investigated collaboratively by several users in the office environment. The specific focus is on the functionalities of Microsoft&rsquo;s HoloLens 2 untethered holographic head mounted display (HMD), and the ADA Platform App by Clirio, which is used to manage model viewing with the HMD. We demonstrate the capabilities of MR for the visualization and dissemination of complex 3D information in geosciences in data rich and self-directed immersive environment, through selected 3D models (most of them of the Montserrat massif). Finally, we highlight the educational possibilities of MR technology. Today MR has an incipient and reduced use; we hope that it will gain popularity as the barriers of entry become lower

    Using Mixed Reality for the Visualization and Dissemination of Complex 3D Models in Geosciences—Application to the Montserrat Massif (Spain)

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    In the last two decades, both the amount and quality of geoinformation in the geosciences field have improved substantially due to the increasingly more widespread use of techniques such as Laser Scanning (LiDAR), digital photogrammetry, unmanned aerial vehicles, geophysical reconnaissance (seismic, electrical, geomagnetic), and ground-penetrating radar (GPR), among others. Furthermore, the advances in computing, storage and visualization resources allow the acquisition of 3D terrain models (surface and underground) with unprecedented ease and versatility. However, despite these scientific and technical developments, it is still a common practice to simplify the 3D data in 2D static images, losing part of its communicative potential. The objective of this paper is to demonstrate the possibilities of extended reality (XR) for communication and sharing of 3D geoinformation in the field of geosciences. A brief review of the different variants within XR is followed by the presentation of the design and functionalities of headset-type mixed reality (MR) devices, which allow the 3D models to be investigated collaboratively by several users in the office environment. The specific focus is on the functionalities of Microsoft’s HoloLens 2 untethered holographic head mounted display (HMD), and the ADA Platform App by Clirio, which is used to manage model viewing with the HMD. We demonstrate the capabilities of MR for the visualization and dissemination of complex 3D information in geosciences in data rich and self-directed immersive environment, through selected 3D models (most of them of the Montserrat massif). Finally, we highlight the educational possibilities of MR technology. Today MR has an incipient and reduced use; we hope that it will gain popularity as the barriers of entry become lower

    Reproducibilidad de la gated-SPECT de perfusión miocárdica en la valoración de la función ventricular y su comparación con la ventriculografía isotópica

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    Introducción y objetivo. Se diseñó un estudio para evaluar la reproducibilidad de la fracción de eyección (FE) y de los volúmenes ventriculares, así como la concordancia de la FE con la obtenida por ventriculografía isotópica. Pacientes y método. Se estudió a 55 pacientes (37 varones; edad media, 61,3 años) remitidos para el diagnóstico (50%) o seguimiento de una cardiopatía isquémica conocida, que fueron sometidos a un protocolo de 2 días con 2 dosis de 800 MBq de 99mTc-tetrofosmina en esfuerzo y en reposo. Se realizaron 2 tomografías computarizadas por emisión de fotones simples sincronizadas con el electrocardiograma (gated-SPECT) de reposo. Mediante el programa QGS se obtuvieron los valores de FE del ventrículo izquierdo, volumen telediastólico (VTD) y volumen telesistólico (VTS) y 49 pacientes aceptaron someterse a una ventriculografía isotópica en equilibrio con hematíes marcados. Resultados. La variabilidad interobservador de la FE fue de 0,5 ± 2,6 puntos de FE (r = 0,99). Para el VTD y el VTS la variabilidad fue 1,9 ± 10,7 ml y 0,5 ± 5,4 ml (r = 0,98 y r = 0,99, respectivamente). La variabilidad interensayo de la FE fue de 2 ± 5,1 puntos de FE (r = 0,94). Para el VTD y el VTS la variabilidad fue 4,5 ± 8,6 ml y 3,4 ± 6,6 ml (r = 0,99 y r = 0,99, respectivamente). La correlación entre la FE obtenida por la gated-SPECT y por ventriculografía no fue óptima: r = 0,75 (intervalo de confianza [IC] del 95%, 0,59-0,85). Conclusiones. Los parámetros de función ventricular que se obtienen con la gated-SPECT muestran una excelente reproducibilidad interobservador e interensayo y pueden emplearse en el seguimiento evolutivo de la función ventricular. Existe una aceptable correlación con la ventriculografía isotópica, pero las diferencias observadas no permiten utilizar indistintamente ambas técnicas

    Elaboración de material didáctico interactivo para la enseñanza de materias de fundamentos físicos de titulaciones técnicas

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    La utilización de películas breves de experiencias prácticas de Física tiene un enorme potencial didáctico, ya que los estudiantes pueden visualizar - cuantas veces lo deseen- fenómenos físicos explicados teóricamente en el aula o realizados en las clases de laboratorio. Estas películas no sólo pueden hacer el proceso de aprendizaje más productivo, sino también incrementar la motivación por la asignatura. En este trabajo se presenta un proyecto que se está llevando a cabo actualmente y que corresponde a la filmación de experiencias prácticas cortas para las asignaturas de Fundamentos de Física de titulaciones técnicas. Este conjunto de películas estará integrado en un portal web al cual pueden acudir los estudiantes vía internet. Se han considerado dos tipo de experiencias, las tradicionalmente denominadas experiencias de cátedra o demostraciones, y otras que constituyen auténticas prácticas de laboratorio en las que el estudiante tiene que tomar datos y obtener resultados.Este trabajo ha sido subvencionado por el Vicerrectorado de Convergencia Europea y Calidad de la Universidad de Alicante
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