Search results for " Burn"

Modelling Regional Air Quality in the Canadian Arctic: Simulation of an Arctic Summer Field Campaign

2017

Model simulations of an Arctic summer field campaign were carried out. The model results were compared with observational data from both ground-based monitoring and in situ measurements on-board multiple mobile platforms. The model was able to well capture regional sources and transport affecting the Arctic air quality. It is shown that the study area was impacted by North American (NA) regional biomass burning emissions. The model-observation comparison also corroborates previous findings on possible roles of marine-biogenic sources in aerosol production in the Arctic MBL during summertime.

Rehabilitating boreal forest structure and species composition in Finland through logging, dead wood creation and fire: The EVO experiment

2007

This paper reviews an ongoing, large-scale multidisciplinary experiment designed to study the possibilities of rehabilitating forest structure and species composition through logging, dead wood creation and fire in managed Norway spruce (Picea abies) forests in southern Finland. These forests have been utilized for several centuries with intensive management and clear-cut harvesting, which has been the dominant practice in Finland since World War II. During this era, the forest structure has become relatively even-aged, and the amount of dead wood has been reduced considerably. Simultaneously, due to an effective fire suppression policy, the role of fire in Finnish nature has been almost co…

Post-fire beetle succession in a biodiversity hotspot: Białowieża Primeval Forest

2020

Abstract Fires can heavily impact forest ecosystems but fire consequences for animal communities at burned and control sites are rarely investigated in natural forests. Here we present a 10-year study of post-fire beetle succession in natural ecosystem of Bialowieza Primeval Forest, Poland, being a hotspot for beetle fauna. We sampled beetles at burned and unburned (control) sites and compared local alpha and regional gamma diversity between treatments and over time. In total, 27,958 individuals belonging to 630 beetle species were recorded. Average species richness (alpha diversity) and density per sample was higher in burned forest than in control sites, and this difference was especially…

Immediate Effects of Prescribed Burning on Soil Mite (Acari: Oribatida) Communities in a Scots Pine (Pinus Sylvestris) Forest, Latvia

2021

Abstract Prescribed burning is used to maintain and restore habitats, to protect and increase species bio-diversity. Knowledge about soil fauna is limited, especially on community responses to fire disturbances. The aim of this study was to determine the immediate effects of prescribed burning on soil armoured mite (Acari: Oribatida) communities, vegetation cover and soil physiochemical properties in a boreal Scots pine forest in Latvia. Soil samples were collected on the day of the prescribed burning in the protected landscape area “Ādaži” and 16 days after. No significant changes in abiotic factors were found. Fire significantly decreased the vegetation cover. After the burning, the total…

Improving surface integrity of additively manufactured GP1 stainless steel by roller burnishing

2020

Abstract Additive manufacturing can rapidly fabricate the desired components by selectively melting and solidifying feedstock, rather than conventional subtractive machining. However, the difference between the two routes in terms of surface integrity of the final component is relevant. This paper presents a strategy to control the surface characteristics of additively manufactured stainless steel by roller burnishing. In particular, process parameters have been carefully selected to improve the surface integrity of the worked material. The quality of the surface has been analyzed in terms of roughness, hardness, microstructure and residual stresses. The overall product endurance under high…

Evaluation of geomorphometric characteristics and soil properties after a wildfire using Sentinel-2 MSI imagery for future fire-safe forest

2021

Abstract Understanding spatiotemporal geomorphological and pedological changes as a consequence of wildfires can allow stakeholders, land planners, and policymakers to design efficient fire safety-based afforestation and restoration programs of forest lands. The use of remote sensing techniques is a key tool to achieve this goal. The suitable combination of Sentinel-2 MSI data for mapping of different spectral indices related to burn severity and their relationship with other morphometric and soil properties can contribute to a better understanding of the impact of fire, and this is relevant in regions where is still scarce fire-related research such as Turkey. In this investigation, the us…

A loss of status and a sense of defeat

2007

This longitudinal study among Spanish teachers (N = 558) examined burnout from an evolutionary social rank perspective. The types of stress differed among various school levels, and a sense of defeat was highest among teachers in primary schools. A low status, a loss of status and a sense of defeat were independent cross‐sectional predictors of burnout. Longitudinally a sense of defeat predicted an increase in burnout over time, especially among males and teachers in high schools. The status related variables were in general more important predictors of burnout than stressors that are usually associated with burnout. Copyright © 2007 John Wiley & Sons, Ltd.

Relación entre la inteligencia emocional y los niveles de burnout y engagement

2014

Tensió laboral, síndrome d’esgotament professional (burn-out) i característiques sociodemogràfiques i laborals en treballadors de botigues de conveni…

2019

espanolLas tendencias de mercado actuales y las nuevas necesidades de los consumidores han situado a las tiendas de conveniencia como un formato comercial solido en nuestro pais. Las caracteristicas de estos establecimientos llevan a sus trabajadores a experimentar condiciones laborales diferentes, que pueden desembocar en la experimentacion por parte de los empleados de consecuencias negativas, tanto fisicas como psicosociales. El proposito del presente estudio ha sido analizar las posibles relaciones existentes entre el sindrome de bur-nout y la tension laboral con diversos factores sociodemograficos –sexo, edad, estado civil y nivel educativo– y laborales –tipo de contrato, numero de hor…

El educador social en comunidad terapéutica: situación actual, reflexiones y propuestas

2008

En el presente artículo, se realiza un análisis de la situación actual de los educadores sociales en las Comunidades Terapéuticas españolas. Para ello, se introduce el tema repasando la historia de este colectivo profesional dentro de dichos dispositivos, hasta llegar al momento actual. Se incluye una breve descripción del trabajo individual, grupal y comunitario de estos profesionales, así como los datos de un pequeño estudio sobre las tareas que desarrollan y su nivel de burnout, obteniéndose niveles altos de realización personal, bajos de despersonalización y medios, aunque dispersos, de agotamiento emocional. Se plantea una reflexión sobre los elementos que dificultan el desarrollo de l…