2,945 research outputs found
Las denuncias que reciben las empresas: ¿se relacionan con la percepción de prestigio que poseen? Análisis en empresas argentinas.
El trabajo tiene por objeto determinar a partir de un análisis no paramétrico utilizando el método de la r de Spearman, la existencia de una relación entre la percepción que el público tiene sobre las empresas y la cantidad de denuncias que reciben. El análisis efectuado se centra en el estudio de dos variables: el prestigio de las empresas, por un lado, y las denuncias recibidas, por el otro. Los datos corresponden a informes del año 2005 de Argentina.intangibles, reputación, Argentina.
Grupo Espejo: una propuesta psicoeducativa de acompañamiento
Se presenta un modelo de intervención integral y grupal que conjuga perspectivas psicológicas y educativas: Grupos Espejo. En el modelo se trabaja el enfoque psicoeducativo en relación a lo clínico como algo que conlleva una finalidad pedagógica, es decir, se promueve el reaprendizaje de los conflictos y tensiones que se viven y actualizan en las figuras del grupo. Se incluye una propuesta de evaluación de competencias psicoemocionales.ITESO, A.C
Morphology, chemical composition, and bacterial concentration of airborne particulate matter in rabbit farms
[EN] Livestock houses are major sources of airborne particulate matter (PM), which can originate
from manure, feed, feathers, skin and bedding and may contain and transport microorganisms. Improved knowledge of particle size, morphology, chemical and microbiological composition of PM in livestock houses can help identify major sources of PM and contribute to the development of appropriate source- specific reduction techniques. In rabbit production systems, however, there is limited information on specific particle characteristics. The objective of this study was to characterise airborne PM in rabbit farms in terms of morphology, chemical compositions and bacterial concentration in different size fractions. Size-fractioned PM was sampled in the air of 2 rabbit farms, 1 for fattening rabbits and 1 for reproductive does, using a virtual cascade impactor, which simultaneously collected total suspended PM (TSP), PM10 and PM2.5 size fractions. Airborne PM samples were examined by light microscopy and scanning electron microscopy combined with energy dispersive X-ray analysis. Representative samples from potential sources of PM were also collected and examined. Additionally, a methodology to extract bacteria from the collected samples of airborne PM was developed to determine the bacterial concentration per PM size fraction. Results showed that airborne PM in rabbit farms is highly complex in particle morphology, especially in size. Broken skin flakes, disintegrated particles from feed or faecal material from mechanical fracture are the main sources of airborne PM in rabbit farms. Major elements found in rabbit airborne PM were S, Ca, Mg, Na and Cl. Bacterial concentrations ranged from 1.7¿104 to 1.6¿106 colony forming units (CFU)/m3 (TSP); from 3.6¿103 to 3.0¿104 CFU/m3 (PM10); and from 3.1¿103 to 1.6¿104 CFU/m3 (PM2.5). Our results will improve the knowledge on essential particle characteristics necessary to understand PM¿s origin in rabbit farms and contribute to its reduction.The authors thank the Spanish Ministry of Science and Innovation for the economic support to conduct this study (Project GasFarm AGL2009-0067) and the Campus de Excelencia Internacional of the Universitat Politecnica de Valencia. The authors are also grateful to the farmers and staff at the farms who collaborated during sampling periods. We thank the Electronic Microscopy Service (Universitat Politecnica de Valencia) for expert technical assistance during SEM analysis.252Adell Sales, E.; Estellés Barber, F.; Torres, AG.; Cambra López, M. (2012). Morphology, chemical composition, and bacterial concentration of airborne particulate matter in rabbit farms. World Rabbit Science. 20(4). doi:10.4995/wrs.2012.1211SWORD24120
Challenges for Cost-Effective Microalgae Anaerobic Digestion
Human-computer interactio
Coitus induced colpo evisceration in a 3-months post hysterectomy patient: an unusual tale in gynecology
Vaginal dehiscence after pelvic surgery is an extremely rare gynecological emergency world over. Without a high index of suspicion, it can easily be missed with grave consequences. We present an extremely rare case of this post abdominal hysterectomy case for which if immediate suspicion and timely intervention were not ensured, the patient would have suffered serious morbidity and/or death
Respiratory research networks in Europe and beyond: aims, achievements and aspirations for the 21st century
Healthcare-associated infection, such as intensive care unit (ICU)-related respiratory infections, remain the most frequently encountered morbidity of ICU admission, prolonging hospital stay and increasing mortality rates. The epidemiology of ICU-related respiratory infections, particularly nonventilated ICU-associated pneumonia and ventilator-associated tracheobronchitis, appears to be quite different among different countries. European countries have different prevalence, patterns and mechanism of resistance, as well as different treatments chosen by different attending physicians. The classical clinical research process in respiratory infections consists of the following loop: 1) identification of knowledge gaps; 2) systematic review and search for adequate answers; 3) generation of study hypotheses; 4) design of study protocols; 5) collection clinical data; 6) analysis and interpretation of the results; and 7) implementation of the results in clinical practic
Cardiac electrical defects in progeroid mice and Hutchinson-Gilford progeria syndrome patients with nuclear lamina alterations
Hutchinson–Gilford progeria syndrome (HGPS) is a rare genetic disease caused by defective prelamin A processing, leading to nuclear lamina alterations, severe cardiovascular pathology, and premature death. Prelamin A alterations also occur in physiological aging. It remains unknown how defective prelamin A processing affects the cardiac rhythm. We show age-dependent cardiac repolarization abnormalities in HGPS patients that are also present in the Zmpste24-/- mouse model of HGPS. Challenge of Zmpste24-/- mice with the ß-adrenergic agonist isoproterenol did not trigger ventricular arrhythmia but caused bradycardia-related premature ventricular complexes and slow-rate polymorphic ventricular rhythms during recovery. Patch-clamping in Zmpste24-/- cardiomyocytes revealed prolonged calcium-transient duration and reduced sarcoplasmic reticulum calcium loading and release, consistent with the absence of isoproterenol-induced ventricular arrhythmia. Zmpste24-/- progeroid mice also developed severe fibrosis-unrelated bradycardia and PQ interval and QRS complex prolongation. These conduction defects were accompanied by overt mislocalization of the gap junction protein connexin43 (Cx43). Remarkably, Cx43 mislocalization was also evident in autopsied left ventricle tissue from HGPS patients, suggesting intercellular connectivity alterations at late stages of the disease. The similarities between HGPS patients and progeroid mice reported here strongly suggest that defective cardiac repolarization and cardiomyocyte connectivity are important abnormalities in the HGPS pathogenesis that increase the risk of arrhythmia and premature death.Peer ReviewedPostprint (published version
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