Search results for " LAB"
showing 10 items of 2393 documents
Device interchangeability on anterior chamber depth and white-to-white measurements: a thorough literature review
2016
We have reviewed a set of recently published studies that compared the anterior chamber depth (ACD) and/or white-to-white (WTW) distance obtained by means of different measuring devices. Since some of those studies reached contradictory conclusions regarding device interchangeability, this review was carried out in attempting to clarify which clinical devices can or cannot be considered as interchangeable in clinical practice to measure ACD and/or WTW distance, among these devices: A-scan, ultrasound biomicroscopy, Orbscan and Orbscan II (Bausch&Lomb Surgical Inc., San Dimas, California, USA), Pentacam and Pentacam HR (Oculus, Wetzlar, Germany), Galilei (Ziemer, Switzerland), Visante optica…
Immigrant Labour and viticulture activity: the Case of the Ribera del Duero
2017
Spain is one of the main countries with significant presence in the global wine market. Ribera de Duero is a region which currently has a very important presence both nationally and internationally in the global production of wine. Studies conducted in the area have addressed different angles of those changes. One of the aspects more addressed in existing studies is the wine tourism strategy, the elements that have enabled the growth of this strategy and the impacts on the region. However, one of the aspects that has not been very much discussed is the importance of the labor force involved in this activity. On this communication, we will focus on analyzing the importance of the migrant la…
ACQUISITION OF STUDENT SCIENTIFIC INQUIRY SKILLS: CENTRALISED EXAMINATION RESULTS IN CHEMISTRY
2016
From 2011, the new educational standard in Latvia in the framework of the educational reform on the centralised examination (CE) in chemistry stipulates students to demonstrate the inquiry skills they have mastered. The purpose of this study is to find out the students’ inquiry skills by analysing the CE results in chemistry. This study addresses the following research questions: (a) To what extent are the centralised examination inquiry skills measured according to the standard outcomes? (b) What information on how students have mastered the inquiry skills in chemistry is available from the CE results for the period of 2011-2015? (c) Does measuring the inquiry skills using inquiry-based la…
Electron crystallography and non-linear optics
1999
Electron crystallography can be used to obtain specific information about molecular parameters such as the polarisability, dipole moment, and hyperpolarisability. In this, work we show how a combination of quantum mechanics and simulation methods can be used to solve several unknown organic structures and how the calculated molecular parameters can be used to predict the corresponding physical properties of the crystals.
Work engagement y su relación con la performance y la satisfacción laboral
2018
El presente trabajo, basado en los aportes de la Psicología Organizacional Positiva (POP),consistió en un análisis del concepto de Work Engagement. Por un lado, se buscó explorar las concepciones que tienen personas con personal a cargo sobre el work engagement mediante entrevistas realizadas a 38 voluntarios de la población general de la Ciudad de Buenos Aires y el conurbano bonaerense (18 hombres, 47.37%; 20 mujeres, 52.63%). La edad promedio fue de 49.87 años (DE = 9.48). Del análisis de contenido realizado se obtuvieron una serie de categorías que reflejan concepciones acerca del engagement. Por ejemplo, los participantes consideraron que las personas con engagement son aquellasque mues…
Respuestas psicobiológicas en profesores al inicio y al final de un curso académico
2013
La evidencia científica indica que el estrés laboral incrementa el riesgo de enfermedad cardiovascular. Las respuestas emocionales, cardiovasculares y endocrinas se ven afectadas por la experiencia diaria. La percepción de estrés, el estado de ánimo negativo, la frecuencia cardíaca (FC) y la presión arterial (PA) incrementan en los periodos laborales. La respuesta del cortisol (C) no es tan clara, existiendo resultados contradictorios. El objetivo de este trabajo es analizar en profesores los marcadores de estrés durante dos jornadas laborales. Además se evaluó el papel del género en la respuesta de estrés en 49 profesores. Para ello, se midió la percepción de estrés, el estado de ánimo, la…
Model of psychosocial intervention in organizations opposed to job stress: operational strategy
2009
Artículos originales [ES] El artículo presenta un modelo de actuación frente a los factores de riesgo psicosociales derivados del estrés laboral. Primeramente relaciona los principales efectos que ocasiona en toda organización el estrés laboral. Al mismo tiempo establece sus prioridades de actuación, para acto seguido indicar las actividades que deben ejecutarse. Dentro de esta fase de actuación, diferencia aquellas que van dirigidas a la organización de forma colectiva, cuya prioridad es manifiesta, frente a las acciones que deben ofrecerse a los afectados de forma individualizada. Así pues, se trata de un modelo de intervención que interactúa tanto en las medidas organizativas generales c…
Psychobiological responses at the beginning and the end of an academic year in teachers
2013
Evidence shows that work stress increases risk of cardiovascular disease. Emotional, cardiovascular and endocrine responses are affected by day-to-day experience. Perceived stress, negative mood, heart rate (HR) and blood pressure (BP) increase in working periods. Cortisol (C) response is not so clear, there being contradictory results. The main purpose is to study stress markers in two working days in teachers. Moreover, we evaluate the role of gender in stress markers in 49 school teachers. Perceived stress, mood, BP, HR, and C were measured at the beginning and at the end of an academic year. Results show that psychological and heart rate responses to a working day were different at the …
Pobreza laboral en España : causas y alternativas políticas
2017
En el contexto de la crisis actual los trabajadores y trabajadoras pobres son una nueva realidad y las tasas de pobreza en España se encuentran entre las más altas de Europa. Habitualmente la pobreza se relacionada con el desempleo y la jubilación. Pero desde 2007 las características de las personas afectadas han cambiado radicalmente. Colectivos que tradicionalmente se consideraban "protegidos" (personas ocupadas, con nivel educativo alto…) ahora ya no lo están. El fuerte incremento de la pobreza que ha tenido lugar y la generalización del problema a nuevos grupos sociales significan un nuevo desafío para el trabajo decente y la integración social. Desde nuestro punto de vista las causas d…
User-oriented evaluation of mechanical single-channel axial pipettes.
2013
Hand tools should be designed so that they are comfortable to use, fit the hand and are user-oriented. Six different manual, single-channel axial pipettes were evaluated for such objective outcomes as muscular activity, wrist postures and efficiency, as well as for subjective outcomes concerning self-assessed features of pipette usability and musculoskeletal strain. Ten experienced laboratory employees volunteered for the study. The results showed that light and short pipettes with better tool comfort resulted in reduced muscular activity and perceived musculoskeletal strain when they were compared with a long and heavy pipette. There were no differences in the efficiency between the differ…