Repercussion of mechanical behaviour in mortars with recycled aggregates by an overdose of PET additive

At present generation of domestic and industrial waste is a serious problem that must be controlled, so it is necessary to conduct further research of materials that minimize this problem by incorporating domestic and industrial waste in them; these materials must provide suitable properties, and perform the same function as the traditional material complies with virgin materials. This research focused on explaining the mechanical effects caused by overdose of unsaturated polyester resin made from post-consumer bottles made with polyethylene terephthalate (PET) (R-PET), cement-R- PET pastas and polymer modified mortars (PMM) with total or partial substitution of the recycled fine aggregate (AR) and additions of R-PET. The TGA and XRD results show that there is less development of the hydration products to a higher content of R-PET, causing reduction in the compressive strength of the PMM.Peer ReviewedPostprint (published version

La actividad “Taller” como herramienta para fomentar y evaluar competencias transversales: Expresión escrita y autoaprendizaje

Las competencias transversales suelen ser definidas como destrezas, aptitudes y habilidades deseables y propias de cada perfil profesional; éstas, no se imparten de forma directa dentro de la temática curricular de las asignaturas, pero sin embargo deben ser fomentadas en todas ellas. En este trabajo se presenta una experiencia práctica del uso del Taller orientado para que el alumnado adquiera algunas de las competencias transversales de la asignatura de Construcciones II-EPSEB. En él, se alienta a los alumnos a trabajan aspectos de redacción técnica y de su técnica de aprendizaje extra-clase, además de también evalúa los trabajos de otros compañeros aplicando rúbricas preestablecidas con criterios de evaluación mixto (de conocimiento y de competencia trasversal).Peer Reviewe

Aprendizaje activo-positivo entre iguales mediante el uso del "Foro" en Campus Virtuales basados en Moodle

Se ha demostrado que el grado de retención del conocimiento se incrementa en aquellos casos en los cuales se “verbaliza, explica o interacciona” el conocimiento con otras personas; lo anterior, puede ser fomentado de forma adecuado mediante el uso de “foros virtuales”. El Campus Virtual (Atenea para la UPC), está implementado mediante el software de libre licencia de uso llamado Moodle. En este trabajo se presenta una experiencia práctica del uso de “foros virtuales” orientado para que el alumnado coopere aportando parte del conocimiento de la asignatura e interaccione con los otros integrantes para provocar el incrementar en la retención del conocimiento. Se aporta en este trabajo un ejemplo de definición de un foro y de su uso real.Peer Reviewe

Uso de la herramienta "Informes" del Campus Virtual de Moodle como criterio evaluativo de una asignatura

Dentro del Campus Virtual Atenea, el cual se basa en la plataforma Moodle,existe la herramienta llamada “Informes”; este utensilio, puede ser utilizado como un criterio de evaluación docente participativa, de identificación de atención personalizada por parte del profesorado hacia el estudiantado, o como criterio avalador del correcto uso del Campus Virtual. El Campus Virtual (AteneaparalaUPC), está implementado mediante el software de libre licencia de uso llamado Moodle. En este trabajo, se aporta una metodología y experiencia real del uso de esta herramienta como elemento evaluador para una asignatura, aportando criterios y resultados obtenidos de su uso.Peer Reviewe

Mortality and pulmonary complications in patients undergoing surgery with perioperative sars-cov-2 infection: An international cohort study

Background The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (740%) had emergency surgery and 280 (248%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (261%) patients. 30-day mortality was 238% (268 of 1128). Pulmonary complications occurred in 577 (512%) of 1128 patients; 30-day mortality in these patients was 380% (219 of 577), accounting for 817% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 175 [95% CI 128-240], p<00001), age 70 years or older versus younger than 70 years (230 [165-322], p<00001), American Society of Anesthesiologists grades 3-5 versus grades 1-2 (235 [157-353], p<00001), malignant versus benign or obstetric diagnosis (155 [101-239], p=0046), emergency versus elective surgery (167 [106-263], p=0026), and major versus minor surgery (152 [101-231], p=0047). Interpretation Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study

Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research

Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

Contains fulltext : 172380.pdf (publisher's version ) (Open Access

La actividad “Taller” como herramienta para fomentar y evaluar competencias transversales: Expresión escrita y autoaprendizaje

Las competencias transversales suelen ser definidas como destrezas, aptitudes y habilidades deseables y propias de cada perfil profesional; éstas, no se imparten de forma directa dentro de la temática curricular de las asignaturas, pero sin embargo deben ser fomentadas en todas ellas. En este trabajo se presenta una experiencia práctica del uso del Taller orientado para que el alumnado adquiera algunas de las competencias transversales de la asignatura de Construcciones II-EPSEB. En él, se alienta a los alumnos a trabajan aspectos de redacción técnica y de su técnica de aprendizaje extra-clase, además de también evalúa los trabajos de otros compañeros aplicando rúbricas preestablecidas con criterios de evaluación mixto (de conocimiento y de competencia trasversal).Peer Reviewe

Repercussion of mechanical behaviour in mortars with recycled aggregates by an overdose of PET additive

At present generation of domestic and industrial waste is a serious problem that must be controlled, so it is necessary to conduct further research of materials that minimize this problem by incorporating domestic and industrial waste in them; these materials must provide suitable properties, and perform the same function as the traditional material complies with virgin materials. This research focused on explaining the mechanical effects caused by overdose of unsaturated polyester resin made from post-consumer bottles made with polyethylene terephthalate (PET) (R-PET), cement-R- PET pastas and polymer modified mortars (PMM) with total or partial substitution of the recycled fine aggregate (AR) and additions of R-PET. The TGA and XRD results show that there is less development of the hydration products to a higher content of R-PET, causing reduction in the compressive strength of the PMM.Peer Reviewe