Residential mobility, second homes and quality of life: Consequences of moving out from the city of Madrid

Residential mobility and migration of retired people is an emerging issue in western societies. Moreover, the Quality of Life (QoL) of old people has become a challenge in our societies, of great interest for researchers and planners. Nevertheless, few studies have investigated how mobility and/or migration help improve QoL. This paper aims to determine the influence of retired people''s residential mobility on the different dimensions of their life. Factors driving residential mobility in this population group are analysed, as well as the sociodemographic characteristics of this group, family, friends and social contacts, and environmental conditions, before and after moving. The methodology used is qualitative and the results have been obtained from 29 in-depth interviews with aged people who have moved from the city of Madrid to other places in Spain. The consequences of the moves are analysed in terms of how the different dimensions of their QoL and their well-being are affected

The native bee fauna of the Palouse Prairie (Hymenoptera: Apoidea)

While synoptic collections provide data on the range and general composition of the North American bee fauna, bee communities associated with specific habitats are largely uncharacterized.  This report describes the community of native bees currently found in remnant fragments of the Palouse Prairie of northern Idaho and southeastern Washington State.  Native bees were collected using standardized collection techniques including blue vane traps, colored pan traps and aerial netting.  More than 13,000 individuals were collected, representing at least 174 species and 36 morphospecies in 29 genera.  These data provide the most thorough characterization of the bee fauna of this vulnerable ecosystem, as well as community level information on bee species of unknown conservation status.  These results are relevant to regional conservation efforts and, more broadly, are representative of conditions in fragmented grasslands surrounded by intense agriculture, a common global land use pattern of conservation concern

The Secret Life of Oilbirds: New Insights into the Movement Ecology of a Unique Avian Frugivore

Background: Steatornis caripensis (the oilbird) is a very unusual bird. It supposedly never sees daylight, roosting in huge aggregations in caves during the day and bringing back fruit to the cave at night. As a consequence a large number of the seeds from the fruit they feed upon germinate in the cave and spoil. Methodology/Principal Findings: Here we use newly developed GPS/acceleration loggers with remote UHF readout to show that several assumptions about the behaviour of Steatornis caripensis need to be revised. On average, they spend only every 3 rd day in a cave, individuals spent most days sitting quietly in trees in the rainforest where they regurgitate seeds. Conclusions/Significance: This provides new data on the extent of seed dispersal and the movement ecology of Steatornis caripensis. It suggests that Steatornis caripensis is perhaps the most important long-distance seed disperser in Neotropical forests. We also show that colony-living comes with high activity costs to individuals

Cooperative CPU, GPU, and FPGA heterogeneous execution with EngineCL

Heterogeneous systems are the core architecture of most of the high-performance computing nodes, due to their excellent performance and energy efficiency. However, a key challenge that remains is programmability, specifically, releasing the programmer from the burden of managing data and devices with different architectures. To this end, we extend EngineCL to support FPGA devices. Based on OpenCL, EngineCL is a high-level framework providing load balancing among devices. Our proposal fully integrates FPGAs into the framework, enabling effective cooperation between CPU, GPU, and FPGA. With command overlapping and judicious data management, our work improves performance by up to 96% compared with single-device execution and delivers energy-delay gains of up to 37%. In addition, adopting FPGAs does not require programmers to make big changes in their applications because the extensions do not modify the user-facing interface of EngineCL

Comparación de métodos de cálculo para la obtención de la variable precipitación en un sig.

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Electrochemical Dimerization of Phenylpropenoids and the Surprising Antioxidant Activity of the Resultant Quinone Methide Dimers

A simple method for the dimerization of phenylpropenoid derivatives is reported. It leverages electrochemical oxidation of pâ unsaturated phenols to access the dimeric materials in a biomimetic fashion. The mild nature of the transformation provides excellent functional group tolerance, resulting in a unified approach for the synthesis of a range of natural products and related analogues with excellent regiocontrol. The operational simplicity of the method allows for greater efficiency in the synthesis of complex natural products. Interestingly, the quinone methide dimer intermediates are potent radicalâ trapping antioxidants; more so than the phenols from which they are derivedâ or transformed toâ despite the fact that they do not possess a labile Hâ atom for transfer to the peroxyl radicals that propagate autoxidation.Chinonmethidâ Dimere wurden durch milde anodische Oxidation vermittelt durch eine preiswerte und leicht verfügbare Aminbase mit exzellenter Ausbeute und Regiokontrolle hergestellt. Diese Strategie ermöglicht raschen Zugang zu Zwischenprodukten für die katalytische Synthese von Phenylpropenoidâ Oligomeren und bietet ein neues Werkzeug für die Totalsynthese dieser komplexen Moleküle.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/146959/1/ange201810870.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/146959/2/ange201810870_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/146959/3/ange201810870-sup-0001-misc_information.pd

Electrochemical Dimerization of Phenylpropenoids and the Surprising Antioxidant Activity of the Resultant Quinone Methide Dimers

A simple method for the dimerization of phenylpropenoid derivatives is reported. It leverages electrochemical oxidation of pâ unsaturated phenols to access the dimeric materials in a biomimetic fashion. The mild nature of the transformation provides excellent functional group tolerance, resulting in a unified approach for the synthesis of a range of natural products and related analogues with excellent regiocontrol. The operational simplicity of the method allows for greater efficiency in the synthesis of complex natural products. Interestingly, the quinone methide dimer intermediates are potent radicalâ trapping antioxidants; more so than the phenols from which they are derivedâ or transformed toâ despite the fact that they do not possess a labile Hâ atom for transfer to the peroxyl radicals that propagate autoxidation.Quinone methide dimers are prepared via mild anodic oxidation mediated by a cheap and readily available amine base with excellent yield and regiocontrol. This strategy provides rapid access to intermediates for the synthesis of phenylpropenoid oligomers in a catalytic fashion, providing a new tool for the total synthesis of these complex molecules.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/147117/1/anie201810870-sup-0001-misc_information.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/147117/2/anie201810870_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/147117/3/anie201810870.pd

Assessing the association between tourism and the alcohol urban environment in Barcelona: a cross-sectional study

Objectives: Alcohol availability and promotion are not distributed equally in the urban context. Evidence shows that the socioeconomic level seems to influence the amount of alcohol-related elements in an area. Some studies suggest that tourism could also affect the distribution of these elements. We explore with a valid instrument in a large city whether there is an association between high tourism pressure and a greater presence of alcohol-related elements in the urban environment. Design: Observational ecological study. Setting: The study was conducted in Barcelona during 2017-2018. Participants: We assessed urban exposure to alcohol by performing social systematic observation using the OHCITIES Instrument in a stratified random sample of 170 census tracts within the city's 73 neighbourhoods. Primary and secondary outcome measures: For each census tract we calculated the density of alcohol premises, and of promotion in public places per 1000 residents. We estimated tourism pressure using the number of tourist beds per 1000 residents in each neighbourhood and calculated quartiles. To assess the relationship between rate ratios of elements of alcohol urban environment and tourism pressure, we calculated Spearman correlations and fitted Poisson regression models with robust error variance. Results: The median densities obtained were of 8.18 alcohol premises and of 7.59 alcohol advertising and promotion elements visible from the public space per 1000 population. Census tracts with the highest tourism pressure had 2.5 (95% CI: 1.85-3.38) times more outlets and 2.3 (95% CI: 1.64-3.23) times more promotion elements per 1000 residents than those in the lowest tourism pressure quartile. Conclusions: We observed a strong association between tourism pressure and alcohol exposure in the city of Barcelona

¿Y dónde quedó el reactivo limitante? Algunas preconcepciones sobre reactivo limitante detectadas en alumnos de licenciatura

El trabajo que se presenta forma parte de un proyecto de investigación educativa cuyo énfasis se centra en conocer algunos factores importantes que interfieren la comprensión de la reacción química. En este caso abordamos las preconcepciones, sobre el reactivo limitante, de un grupo piloto de alumnos de licenciatura de la Facultad de Química (UNAM). Se presenta el análisis de las respuestas después de aplicar un cuestionario de opción múltiple, en el que se solicitaba la justificación de la opción elegida así como de las entrevistas realizadas

Understanding how alcohol environment influences youth drinking: A concept mapping study among university students

The aim of the study was to identify the environmental factors that influence alcohol consumption, according to university students, and assess the relative importance and the frequency attributed to each factor. A study using Concept Mapping methodology was performed with a sample of nursing students, who participated in two face-to-face data collection sessions. In session 1, a consensus about the environmental aspects that influence their alcohol consumption was obtained. In session 2, the statements obtained were rated according to their relative importance and frequency in alcohol use (1 = minimum; 5 = maximum). Subsequently, all data were analyzed with the RCMAP of the statistical package R 3.6.1. Approximately 60 students participated in each session. Most were women aged 20 to 24. In session 1, a total of 55 statements were obtained and classified into 7 different clusters: Advertising (9 statements); Family environment (4 statements); Social pressure (12 statements); Responsibilities/ norms (4 statements); Holidays and leisure time (7 statements); Emotional situations (8 statements); Accessibility (11 statements). Factors related to social pressure, holidays and leisure time, and alcohol accessibility were considered the most important and frequent in alcohol consumption. In contrast, alcohol advertising was considered the least important (mean 2.6 out of 5) and frequent (mean 2.1 out 5) factor. In conclusion, the factors considered most relevant among nursing students match those having more resources allocated for prevention and health promotion, except for alcohol advertising, which was perceived as less important and frequent compared with the other factors