1,618 research outputs found
Project WILAS – West Iberia Lithosphere and Astenosphere Structure
The lithosphere of Iberia has been formed through a number of processes of continental collision and extension:
in Lower Paleozoic, the collision of three tectonics blocks produced the Variscan Orogeny, the main event of
formation of the lithosphere. The subsequent Mesozoic rifting and breakup of the Pangea had a profound effect
on the continental crust of Iberia. Since the Miocene, the southern interaction between Africa and Iberia is
characterized by a diffuse convergent margin that originates a vast area of deformation. The impact of this
complex tectonic in the structure of the Lithosphere remains an incognito, especially in its western part.
Project WILAS (PTDC/CTE-GIX/097946/2008) is a 3 years project funded by FCT in which a temporary
network of more than 20 BB seismic stations is being deployed in Portugal between 2010-2012. It will extend to
the western border of Iberia the coverage of the TOPO-IBERIA project.
The project aims to image the 3D structure beneath W Iberia. The knowledge of the Crust, Lithosphere and
Astenosphere seismic structure must be dealt at different scales, involving different but complementary methods
Coaching effectiveness within competitive youth football: youth football coaches’ and athletes’ perceptions and practices
Competitive youth sport can provide solid grounds for
positive youth development (PYD). However, there is need to
understand if coaches are facilitating these types of outcomes.
The purpose of this study was to analyze how competitive
youth sport is used to facilitate PYD. The participants in this
study were four youth football coaches and 19 adolescent
athletes from competitive leagues at north of Portugal.
Data were collected through semi-structured interviews,
field notes and nonparticipant observations. The majority
of the coaches communicated appropriately and facilitated
positive interactions with youth athletes. Nevertheless, the
participants did not implement an explicit approach towards
the development of confidence, character, connection and
competence (i.e., 4 C’s) which has been linked to less PYD
outcomes. Performance outcomes in certain moments
superseded PYD ones. Moving forward, coaches need to
comprehend how they can use their interpersonal knowledge
to integrate the 4 C’s within competitive youth sport.info:eu-repo/semantics/publishedVersio
Analysis of drugs returned by inpatient services after unit dose distribution in a portuguese public hospital
Unit-dose has been considered the most effective dispensing system in hospital pharmacy, however not all drugs are administered, are then returned to the pharmacy. The analysis of non-administered drugs might provide important data regarding pharmacotherapeutic follow-up, but also regarding pharmacy management decisions. The present study aims at depicting the drugs returned to the pharmacy following their previous unit-dose dispensing. Methods: During a period of 45 days, the unused returned drugs of five different inpatient clinical services were analyzed regarding the state of conservation, justification for return, inpatient clinical service provenance, and dosage regimen. Of a total of 65280 unit-dose dispensed drugs, 25.2% were returned (n=16431) and 74.9% of SOS (i.e. medications prescribed as needed) drugs (n=6583) were unused. Excluding SOS drugs, more than a half of the returned drugs (52.4%, n=4967), were probably returned due to unintended omission of administration, after excluding patients that were not physically on the unit and patients whose treatments were modified. The large majority of returned drugs (98.6%, n=16201) were suitable for reintroduction in the medication circuit. In order to accomplish the basic principles of unit-dose dispensing genesis, the returned drugs must be kept to a minimum. Therefore, the suspension of dispensing SOS drugs by unit-dose should be considered. Additionally, the careful analysis of returned drugs should be promoted, in order to avoid, as much as possible, the omission of administration.info:eu-repo/semantics/publishedVersio
Tectonoestratigrafia da faixa de cisalhamento de Porto–Albergaria-a-Velha–Coimbra–Tomar, entre as Zonas Centro-Ibérica e de Ossa-Morena (Maciço Ibérico, W de Portugal)
DISEÑO DE UN CONTROLADOR DIFUSO PARA EL ESTACIONAMIENTO DE UN AUTOMÓVIL EN REVERSA
El estacionamiento de un automóvil en reversa es una de las situaciones que más puede llevar la atención del cualquier conductor. La necesidad de tomar la decisión adecuada para realizar el estacionamiento de forma rápida o lenta, mover la cabrilla en el sentido indicado y con el ángulo correspondiente hace que los conductores tengan más cuidado y ejerzan una mayor destreza. En el presente trabajo se realiza el planteamiento, de un controlador difuso que permita realizar el manejo adecuado de un automóvil en reversa. Para esto, se utilizan como base archivos de Matlab® para implementar los conjuntos difusos, el sistema de inferencia difuso y la defusificación que permitan observar la forma como un operario experto podrÃa hacer la respectiva tare
DISEÑO DE UN CONTROLADOR DIFUSO PARA EL ESTACIONAMIENTO DE UN AUTOMÓVIL EN REVERSA
El estacionamiento de un automóvil en reversa es una de las situaciones que más puede llevar la atención del cualquier conductor. La necesidad de tomar la decisión adecuada para realizar el estacionamiento de forma rápida o lenta, mover la cabrilla en el sentido indicado y con el ángulo correspondiente hace que los conductores tengan más cuidado y ejerzan una mayor destreza. En el presente trabajo se realiza el planteamiento, de un controlador difuso que permita realizar el manejo adecuado de un automóvil en reversa. Para esto, se utilizan como base archivos de Matlab® para implementar los conjuntos difusos, el sistema de inferencia difuso y la defusificación que permitan observar la forma como un operario experto podrÃa hacer la respectiva tare
Built environment attributes and their influence on walkability
Walking is a sustainable mode of transport and a healthy way of doing physical activity.
Walkability is a concept that has gained enormous popularity in recent years due to its potential
to promote more sustainable urban environments and healthy lifestyles. This paper provides a literature
review to analyze the influence of built environment attributes on walkability. The Scopus
and Web of Science databases were chosen to survey the peer-reviewed documents published up
to June 2020. A total of 132 documents were selected by the search. The review of these 132
documents showed that various built environment attributes were differently analyzed and
assessed. More specifically, the search identified 32 built environment attributes that were
assessed by using 63 measures. Intersection density, residential density and land use mix were the
most used attributes for assessing walkability, namely by using objective methods, such as ratios
and spatial score tools. In turn, attributes related to streetscape design and security were much
less adopted in walkability assessments. This paper provides additional insights into how built
environment attributes influence walkability and identifies gaps and issues that should be analyzed
in-depth in the future. The review could be helpful for researchers and urban planners in
developing walkability studies and in defining policies to improve walkability
Ulcerative Colitis Impairs the Acylethanolamide-Based Anti-Inflammatory System Reversal by 5-Aminosalicylic Acid and Glucocorticoids
Studies in animal models and humans suggest anti-inflammatory roles on the N-acylethanolamide (NAE)-peroxisome proliferators activated receptor alpha (PPARα) system in inflammatory bowel diseases. However, the presence and function of NAE-PPARα signaling system in the ulcerative colitis (UC) of humans remain unknown as well as its response to active anti-inflammatory therapies such as 5-aminosalicylic acid (5-ASA) and glucocorticoids. Expression of PPARα receptor and PPARα ligands-biosynthetic (NAPE-PLD) and -degrading (FAAH and NAAA) enzymes were analyzed in untreated active and 5-ASA/glucocorticoids/immunomodulators-treated quiescent UC patients compared to healthy human colonic tissue by RT-PCR and immunohistochemical analyses. PPARα, NAAA, NAPE-PLD and FAAH showed differential distributions in the colonic epithelium, lamina propria, smooth muscle and enteric plexus. Gene expression analysis indicated a decrease of PPARα, PPARγ and NAAA, and an increase of FAAH and iNOS in the active colitis mucosa. Immunohistochemical expression in active colitis epithelium confirmed a PPARα decrease, but showed a sharp NAAA increase and a NAPE-PLD decrease, which were partially restored to control levels after treatment. We also characterized the immune cells of the UC mucosa infiltrate. We detected a decreased number of NAAA-positive and an increased number of FAAH-positive immune cells in active UC, which were partially restored to control levels after treatment. NAE-PPARα signaling system is impaired during active UC and 5-ASA/glucocorticoids treatment restored its normal expression. Since 5-ASA actions may work through PPARα and glucocorticoids through NAE-producing/degrading enzymes, the use of PPARα agonists or FAAH/NAAA blockers that increases endogenous PPARα ligands may yield similar therapeutics advantages
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