Forest Ecosystem Services: An Analysis of Worldwide Research

The relevance of forests to sustain human well-being and the serious threats they face have led to a notable increase of research works on forest ecosystem services during the last few years. This paper analyses the worldwide research dynamics on forest ecosystem services in the period from 1998 to 2017. A bibliometric analysis of 4284 articles was conducted. The results showed that the number of published research articles has especially increased during the last five years. In total, 68.63% of the articles were published in this period. This research line experiences a growing trend superior to the general publishing trend on forest research. In spite of this increase, its relative significance within the forest research is still limited. The most productive subject areas corresponded to Environmental Science, Agricultural and Biological Sciences and Social Sciences Economic topics are understudied. The scientific production is published in a wide range of journals. The three first publishing countries are United States, China and the United Kingdom. The most productive authors are attached to diverse research centres and their contributions are relatively recent. A high level of international cooperation has been observed between countries, institutions and authors. The findings of this study are useful for researchers since they give them an overview of the worldwide research trends on forest ecosystem services

Diseño y validación de un cuestionario para medir la autoestima infantil. La relación entre autoestima, rendimiento académico y las variables sociodemográficas

El objetivo del presente estudio ha sido diseñar y analizar la validez de contenido, comprensión y constructo de un instrumento para medir la autoestima infantil en niños y niñas de tres a siete años de edad. En primer lugar, la validación de contenido se llevó a cabo a través del acuerdo y consenso de nueve expertos mediante la técnica Delphi. La validez de comprensión y constructo quedó determinada en un estudio piloto con 250 escolares. Los datos iniciales recogidos a través del Delphi y del estudio piloto aportaron algunas modificaciones a la versión experimental, quedando compuesta la versión definitiva por 21 ítems distribuidos en cinco subescalas de la autoestima. El cuestionario, al que hemos llamado EDINA, se aplicó a una población de 1757 niños y niñas de 3 a 7 años de edad y los resultados obtenidos avalan la capacidad discriminativa de los ítems siendo su valor alfa de 0.803. Las subescalas cuentan con índices de consistencia interna aceptables respecto a la estructura interna del constructo estudiado mediante análisis factorial confirmatorio; reflejando la estructura de cinco factores: corporal, personal, social, académico y familiar. En segundo lugar diferentes análisis univariantes y multivariantes permitieron calcular las diferencias en la autoestima y sus cinco dimensiones según la edad, el sexo, el nivel socieconómico y los resultados académicos. Los resultados mostraron que: a) La autoestima evoluciona con la edad; b) Aparecen diferencias en la autovaloración personal según el sexo; c) La autoestima difiere en función de la variable nivel socioeconómico; y d) Pueden considerarse predictores de los resultados académicos la autoestima, la edad, el sexo y el nivel socieconómico. Para finalizar se proponen modelos explicativos de las variables predictivas del rendimiento académico y de la autoestima de cara a generar programas de intervención escolar y familiar con los que mejorar la autoestima en los grupos más desfavorecidos

Discovering Rehabilitation trends in Spain: A bibliometric analysis

The main purpose of this study is to offer an overview of the rehabilitation research area in Spain from 1970 to 2018 through a bibliometric analysis. Analysis of performance and a co-word science mapping analysis were conducted to highlight the topics covered. The software tool SciMAT was used to analyse the themes concerning their performance and impact measures. A total of 3,564 documents from the Web of Science were retrieved. Univ Deusto, Univ Rey Juan Carlos and Basque Foundation for Science are the institutions with highest relative priority. The most important research themes are IntellectualDisability, Neck-Pain and Pain

Branded content and luxury fashion: analysis of audio-visual content on YouTube (2008-2019)

Las redes sociales y la democratización de la moda han impactado en las estrategias comunicativas del sector del lujo. Este artículo realiza un análisis de descriptivo a través del análisis de contenido de todos los vídeos alojados – 4079 – en los canales de Youtube de las 12 principales marcas de moda de lujo. El principal objetivo es conocer la evolución de los contenidos audiovisuales de las principales marcas de moda de lujo en Youtube e identificar los principales formatos. Los resultados aportan una clasificación de los principales formatos utilizados por el sector del lujo, así como su capacidad de interacción. La investigación concluye que las marcas de moda de lujo usan más formatos convencionales que estrategias de contenido asociadas al branded content. Del mismo modo, se aprecia que las marcas de moda de lujo apenas interaccionan con su público objetivo.Social networks and the democratisation of fashion have had an impact on the communication strategies deployed by the luxury sector. This article performs a descriptive analysis by way of a content analysis of all the videos hosted – 4079 – on the Youtube channels of the 12 main luxury faschion brands. The aim is to comprehend the evolution of the audio-visual content of the main luxury fashion brands on Youtube and to identify the main formats. The results provide a classification of the main formats used by the luxury sector, as well as their capacity for interaction. The research concludes that luxury fashion brands deploy more conventional formats than content strategies associated with branded content. . Similarly, it can be seen that luxury fashion brands interact with their target audience only marginally

Branded content and luxury fashion: analysis of audio-visual content on YouTube (2008-2019)

Las redes sociales y la democratización de la moda han impactado en las estrategias comunicativas del sector del lujo. Este artículo realiza un análisis descriptivo a través del análisis de contenido de todos los vídeos alojados —4079— en los canales de YouTube de las 12 principales marcas de moda de lujo. El principal objetivo es conocer la evolución de los contenidos audiovisuales de las principales marcas de moda de lujo en YouTube e identificar los principales formatos. Los resultados aportan una clasificación de los principales formatos utilizados por el sector del lujo, así como su capacidad de interacción. La investigación concluye que las marcas de moda de lujo usan más formatos convencionales que estrategias de contenido asociadas al branded content. Del mismo modo, se aprecia que las marcas de moda de lujo apenas interaccionan con su público objetivo.Social networks and the democratisation of fashion have had an impact on the communication strategies deployed by the luxury sector. This article performs a descriptive analysis by way of a content analysis of all the videos hosted —4079— on the YouTube channels of the 12 main luxury fashion brands. The aim is to comprehend the evolution of the audio-visual content of the main luxury fashion brands on YouTube and to identify the main formats. The results provide a classification of the main formats used by the luxury sector, as well as their capacity for interaction. The research concludes that luxury fashion brands deploy more conventional formats than content strategies associated with branded content. Similarly, it can be seen that luxury fashion brands interact with their target audience only marginally

Intervalo entre partos en el vacuno de carne extensivo de raza retinta

La eficacia reproductiva en el vacuno depende, entre otros parámetros, del intervalo entre partos. Esta variable está considerada una de las más importantes para la rentabilidad de la explotación en el caso del vacuno de carne en régimen extensivo. En este trabajo se estudia la influencia de distintos factores sobre el intervalo entre partos en la raza retinta mediante el análisis de 7356 partos de 1803 vacas pertenecientes al Núcleo de Control de Rendimientos de la Asociación de Ganaderos de esta raza. Nuestros resultados muestran que este parámetro se ve afectado principalmente por la ganadería, la campaña ganadera, época, sus interacciones y el tipo de parto, no existiendo relación significativa entre este período y el peso al destete de los terneros El valor medio obtenido para todo el intervalo analizado ha sido de 16,144 ± 0,086 meses y la heredabilidad estimada para este carácter fue de 0,1104 ± 0,08

Influence of liquid-to-biogas ratio and alkalinity on the biogas upgrading performance in a demo scale algal-bacterial photobioreactor

The influence of the liquid-to-biogas ratio (L/G) and alkalinity on methane quality was evaluated in a 11.7 m3 outdoors horizontal semi-closed tubular photobioreactor interconnected to a 45-L absorption column (AC). CO2 concentrations in the upgraded methane ranged from <0.1 to 9.6% at L/G of 2.0 and 0.5, respectively, with maximum CH4 concentrations of 89.7% at a L/G of 1.0. Moreover, an enhanced CO2 removal (mediating a decrease in CO2 concentration from 9.6 to 1.2%) and therefore higher CH4 contents (increasing from 88.0 to 93.2%) were observed when increasing the alkalinity of the AC cultivation broth from 42 ± 1 mg L−1 to 996 ± 42 mg L−1. H2S was completely removed regardless of the L/G or the alkalinity in AC. The continuous operation of the photobioreactor with optimized operating parameters resulted in contents of CO2 (<0.1%–1.4%), H2S (<0.7 mg m−3) and CH4 (94.1%–98.8%) complying with international regulations for methane injection into natural gas grids.Peer ReviewedPostprint (published version

Study of the Decomposition of N-Nitrosonornicotine (NNN) under Inert and Oxidative Atmospheres: Effect of the Addition of SBA-15 and MCM-41

Nowadays, the use of tobacco biomass as an energy source is being valued. Therefore, it is important to know the processes that take place during combustion and pyrolysis, as well as the substances that are formed. In this work, we study the compounds obtained during the decomposition of NNN as a function of temperature under inert and oxidant atmospheres. Moreover, the effect of the addition of SBA-15 and MCM-41 is analyzed. Two different techniques, i.e., TG/FTIR (low heating rates) and EGA Py/GC/MS (high heating rates), are used. At low temperatures NNN is almost unaltered, but it is volatilized and dragged by the carrier gas. When increasing the temperature, decomposition takes place, with pyridines being one of the most abundant compounds observed. The main compound obtained during the pyrolysis are 3- pyridinecarbonitrile, myosmine and nornicotine, which are precursors of NNN. When NNN is mixed with SBA-15, the decomposition of the NNN nitrosamine is favored at low temperatures where the yield in pyridine compounds increases. The catalysts modify the temperature and intensity of the processes, especially under an oxidative atmosphere where the residue is oxidized, showing a third loss of weight. These materials modify the compositions of gases, mainly under an O2 atmosphere (3-pyridinecarbonitrile and myosmine showed the major effect). SBA-15 with fibrous morphology obtains the best reductions at pyrolysis conditions.Financial support for this investigation has been provided by the “Conselleria d’Educació, Investigació, Cultura i Esport” (grant numbers IDIFEDER 2018/009 and PROMETEO2020/093)

Thermo-optical performance of a solar funnel cooker

Funnel type solar cookers are simple, effective and have multiple advantages in practical use, but there is limited data available in scientific literature about their thermo-optical performance. This work aims to fill this lack of data. A well known model of solar funnel cooker has been subject to a series of experimental tests, indoor and outdoor, using different working fluids (water and oil). The experimental data has been used to calibrate the parameters of a simple thermal model. The calibrated model predictions show good agreement with experimental data and figures of merit describing the thermo-optical performance of the cooker are provided.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech