Prospects for cosmic magnification measurements using HI intensity mapping

We investigate the prospects of measuring the cosmic magnification effect by cross-correlating neutral hydrogen intensity mapping (H I IM) maps with background optical galaxies. We forecast the signal-to-noise ratio for H i IM data from SKA1-MID and HIRAX, combined with LSST photometric galaxy samples. We find that, thanks to their different resolutions, SKA1-MID and HIRAX are highly complementary in such an analysis. We predict that SKA1-MID can achieve a detection with a signal-to-noise ratio of ∼15 on a multipole range of ℓ ≲ 200, while HIRAX can reach a signal-to-noise ratio of ∼50 on 200 < ℓ < 2000. We conclude that measurements of the cosmic magnification signal will be possible on a wide redshift range with foreground H I intensity maps up to z ≲ 2, while optimal results are obtained when 0.6 ≲ z ≲ 1.3

Digit-only sauropod pes trackways from China - evidence of swimming or a preservational phenomenon?

For more than 70 years unusual sauropod trackways have played a pivotal role in debates about the swimming ability of sauropods. Most claims that sauropods could swim have been based on manus-only or manus-dominated trackways. However none of these incomplete trackways has been entirely convincing, and most have proved to be taphonomic artifacts, either undertracks or the result of differential depth of penetration of manus and pes tracks, but otherwise showed the typical pattern of normal walking trackways. Here we report an assemblage of unusual sauropod tracks from the Lower Cretaceous Hekou Group of Gansu Province, northern China, characterized by the preservation of only the pes claw traces, that we interpret as having been left by walking, not buoyant or swimming, individuals. They are interpreted as the result of animals moving on a soft mud-silt substrate, projecting their claws deeply to register their traces on an underlying sand layer where they gained more grip during progression. Other sauropod walking trackways on the same surface with both pes and manus traces preserved, were probably left earlier on relatively firm substrates that predated the deposition of soft mud and silt . Presently, there is no convincing evidence of swimming sauropods from their trackways, which is not to say that sauropods did not swim at all

Positive youth development : interactions between healthy lifestyle behaviours and psychosocial variables

Copyright © 2006 - 2018 The Canadian Center of Science and Education. All Rights Reserved .Copyright for this article is retained by the author(s), with first publication rights granted to the journal. This is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).The Positive Youth Development - PYD concept emphasised the importance of strengthening developmental assets in youth’s networks and contexts. This paper examines the correlation between PYD, healthy lifestyle behaviours and psychosocial variables (self-regulation, resilience, and anxiety); and the impact of PYD and psychosocial variables on healthy lifestyle behaviours. 2700 youths (73.3% girls; mean age 21.3±2.79 years) were included. Results showed that all variables mostly had significantly correlational associations. Specifically, the linear regression model evidenced that the promotion of PYD and self-regulation, along with the reduction of anxiety can be relevant for improving healthy lifestyle behaviours. Such results suggest a dynamic interdependence between all the present variables, reinforcing the need to study positive indicators for youth development. Having more knowledge in this area can help health professionals, educators, and policy-makers, in order to better plan interventions/policies and to improve an integral healthy perspective for youths, based on interdisciplinary and transdisciplinary work.info:eu-repo/semantics/publishedVersio

Cyberbullies, cybervictims and cyberbullies-victims : discriminant factors in portuguese adolescents

© Sociedade Portuguesa de Psicologia da SaúdeEnhancers of new and positive opportunities and learning, new technologies are also promoters of risks to the health and well-being of young people. Cyberbullying is one of those risks. The aim of this study was to analyse the differences between cyberbullies, cybervictims and cyberbully-victims for individual, relational and contextual factors. This is a Cross-sectional study. Results showed that cyberbully-victims reported higher alcohol consumption, as opposed to the increased drug use revealed by cyberbullies. Cybervictims reported more emotional symptoms, such as fear and sadness, and less night outs. Cyberbullies were more often involved in fights, and had an easier access to a larger amount of money and were more easy making friends, when compared to cybervictims. Based on the results, it is crucial to develop a greater awareness and education of parents and youth about the dangers of cyberbullying, together with the monitoring of technological development. A strong argument is also made related to the need of the inclusion of youth participation in the definition of public policies to prevent cyberbullying, as well as the need to focus not only in the prevention of cyber-peer related violence, but also to focus on violence-free, positive peer relationships, both virtual and in presence.This research was supported by the Ministry of Health. The authors would like to acknowledge the collaboration of the HBSC Portuguese team integrated in the Social Adventure Projects of the Faculty of Human Kinetics, University of Lisbon, for data collection. Branquinho, C. receives a PhD grant from the University of Lisbon (UL) (Grant Number 800178).info:eu-repo/semantics/publishedVersio

Paecilomyces fumosoroseus blastospore production using liquid culture in a bioreactor

There are many advantages to using liquid cultures for the production of blastospores. These include mainly the processes of scale up which are relatively easy, as well as the control of parameters such astemperature, aeration and pH. In this work, we evaluated the production of Paecilomyces fumosoroseus blastospores using a low-cost liquid culture medium in a fermenter in comparison to a mediumcommonly used for this purpose, with regard to yield and viability of blastospores. The two media contained the same concentration of glucose but differed in N source (M1 containing casamino acidsand M2 provided with collagen peptone and yeast extract). Starting with an inoculum of 1x106 blastospores/ml, M2 medium produced 2x1010 blastospores/ml after incubation for 72 h at 520 rev/minagitation and 1 v/v/m (volume air/volume liquid.min) aeration, while only 2.4 x 108/ml were produced with M1. In addition, the microorganisms in medium M1 grew more slowly during log phase and reached an earlier plateau at 36 h fermentation. The medium containing collagen peptone and yeast extract is an excellent alternative for the production of P. fumosoroseus blastospores, providing lower cost, higher yield and shorter propagation time, but formulation does need to be improved

Hemossiderose Pulmonar: Revisão Casuística da Consulta de Hematologia Pediátrica do Hospital de Dona Estefânia Durante o Período 1976-1994

Os autores fazem uma análise retrospectiva dos processos de crianças com hemossiderose pulmonar (HP) inscritas na Consulta de Hematologia Pediátrica do Hospital de Dona Estefânia no período de 1976 a 1994. Foram caracterizados o sexo e a raça dos doentes, a idade de aparecimento da sintomatologia inicial, o período que decorreu entre esta e a confirmação do diagnóstico e os aspectos clínicos, laboratoriais e radiológicos respeitantes ao diagnóstico, terapêutica e evolução clínica. A propósito desta entidade nosológica, é feita uma revisão bibliográfica. Confirma-se que a HP é uma doença rara, que inicialmente se apresenta com um quadro de anemia ferropénica arrastada com ou sem sintomatologia respiratória. O diagnóstico faz-se pelo achado de hemossiderófagos no lavado gástrico ou bronco-alvéolar. A etiopatogenia mantém-se desconhecida e a corticoterapia continua a ser a terapêutica mais eficaz no controlo da hemorragia pulmonar. A doença tem uma evolução inconstante, persistente ou intermitente, com um prognóstico variável, geralmente grave

Youth have a voice : qualitative exploration of a participatory action-research program

© Under License of Creative Commons Attribution 3.0 LicenseAlthough the participatory action-research programs with young people are increasingly common around the world, their inclusion in the evaluation of intervention programs in the area of health promotion is still not a rule. This study presents youths’ assessment of strengths, weaknesses, opportunities and threats of the Dream Teens project, along with its impact on their development as a person, the development of their individual action and their social support (family, school and community). Two studies are presented: study 1, referring to individual interviews, including a total of 12 young people, with a mean age of 18.5 years (± 1.62), mostly girls (83.3%) attending secondary school (41.67%), higher education (33.33%) and third grade (25%); and study 2, referring to a focus group that involved 8 young people, mostly girls (75%), age 18.5 years ( ± 2) attending higher education (37.5%), secondary school (37.5%) and third grade (25%). The NVivo software was used for the analysis and processing of data. Overall, young people identify the establishment of goals in the project, the relationships established, the acquired knowledge and face-to-face meetings as forces; their difficulty in dealing with empowerment, and weak participation of some young people as weaknesses; the availability of local authorities and some teachers to listen to young people as opportunities; and the necessary bureaucracy in order for a project to be implemented, the lack of support from the educational community and some teachers, along with the lack of support of political power as threats. In terms of impact on the participants, there is an increase in their capacity for the development of the person, in the promotion of their self-esteem, personal goals, a sense of community participation, communication skills and respect for themselves and for others; and their development of individual action, a greater political empowerment, development of skills and confidence for research-action, and relationships established. The opportunities created include the establishment of new contacts and the feeling of support from some political bodies at a social support level; promotion of active listening, capacity for argumentation and development of new interests at the family level; at school, these include better relationships with teachers and colleagues, better academic performance, easier coping with frustration, better acceptance of the other; and in the community, although they have not noticed significant changes, they believe that their work will have future repercussions. This work is expected to contribute to an increase in the number of research-action programs with the participation of young people, enhancing their effectiveness as a way to promote their health and wellbeing.Branquinho, C. receives a PhD grant from The University of Lisbon (UL) (Grant Number 800178), and Matos, M. G. receives a Sabbatical grant from the Foundation for Science and Technology (FCT) (SFRH / BSAB / 135160 / 2017).info:eu-repo/semantics/publishedVersio

The effect of a social-emotional school-based intervention upon social and personal skills in children and adolescents

Copyright for this article is retained by the author(s), with first publication rights granted to the journal. This is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).In the middle of the 20th century, there was a shift from a skills deficit approach to a positive approach, focused on promoting assets and individual strengths. The role of social-emotional competences became salient. School is a privileged arena for universal and selective prevention interventions that can help pupils in raising their competence to cope with life challenges in a relaxed, non-violent and effective way. Personal and social-emotional skills play a key role in children and adolescents’ development, as well as their behavior towards risk factors and there is a need to evidence-based interventions. The scale “For me it’s Easy” is an evaluation tool for personal and socio-emotional skills and was used to assess the effect of a Social and Emotional Skills Promotion Program. Personal and social skills play a key role in children and adolescents’ development, as well as their behavior towards risk factors. The study includes an intervention group with 960 Portuguese children and adolescents with a mean age of 12.5 years (SD = 1.61) and included were 56.8% boys of different educational levels. The waiting-list group included 171 children and adolescents; 46.2% were boys. The mean age was 14.7 years and the SD was 3.3. The results reveal significant differences in the intervention group related to the competences before and after the intervention, namely in the interpersonal relationships and definition of goal related skills, while in the waiting list group there were no significant differences in the moment before and after the intervention, and the scale “For me it’s Easy” can be considered an instrument which contributes to the research and evaluation of intervention in children and adolescents, especially in the prevention and promotion of personal and social skills and healthy development.info:eu-repo/semantics/publishedVersio