11 research outputs found
Erros de medicação. Problemas de segurança com medicamentos em adolescentes
Trabalho Final de Mestrado Integrado, CiĂȘncias FarmacĂȘuticas, Universidade de Lisboa, Faculdade de FarmĂĄcia, 2013O interesse pela ĂĄrea da segurança do doente tem aumentado gradualmente nas Ășltimas dĂ©cadas, principalmente apĂłs a publicação do relatĂłrio To Err is Human em 1999 que alertou a comunidade cientĂfica para a ocorrĂȘncia de erros de medicação e as suas consequĂȘncias. A literatura disponĂvel Ă© unĂąnime: os erros de medicação ocorrem, as causas sĂŁo multifactoriais e as consequĂȘncias atingem nĂŁo sĂł o doente, como o prestador de cuidados de saĂșde, a famĂlia e o prĂłprio sistema de saĂșde.
Neste contexto surge o adolescente como factor de risco para a ocorrĂȘncia de erros de medicação. A adolescĂȘncia, caracterizada como um perĂodo de transição e de muitas mudanças, representa um desafio no que diz respeito Ă segurança do doente para os actuais sistemas de saĂșde.The interest about patient safety has been increasing in the last decades, mainly after 1999 when the report To Err is Human was published. This report alerted the scientific community for the medication errorsâ occurrence and their consequences. The literature available agrees: medication errors happen, their causes are multifactorials and the consequences reach not only the patient but also the healthcare provider, the family and the health system.
In this context arise the adolescent as a risk factor for medication errorsâ occurrence. The adolescence, characterized as a transition state with lots of changes, represents a challenge for patient safety in health systems
Durability of fibre reinforced cementitious composites: Coupling mechanical and chloride environment loads
Fibre reinforced cementitious composites (FRCC) may be characterized by their improved performance namely in terms of tensile ductility, accompanied by multiple cracking, and potentially lower permeability to liquid and gas in cracked state. Cracking, which is nearly inevitable, can occur due to applied structural loading, shrinkage, chemical attack, thermal deformations and restrained condition. Even though might not be a structural problem, cracking could be a durability issue, since it considerably modifies the transport properties of the cementitious composite and, as consequence, accelerates the deterioration process, which can significantly impair the long term service life of a structure or element. Literature indicates that, particularly for chloride penetration, the presence of cracks and/or load condition, causes a more deleterious attack compared to standard durability test on sound specimens composites. Contributing to that concern a methodology for accessing chloride attack in loaded and/or cracked FRCC is proposed. Cracking procedure and specimen geometry were selected, considering that cracks produced in laboratory should resemble those in structural elements (beams). Thus, FRCC specimens were firstly pre-loaded under four point bending up to a pre-defined crack width. The crack width was kept using special stainless steel frame. In addition, cracked but not loaded specimens were considered and sound specimens were used as reference. Then, specimens were exposed to wet-dry cycles in a chloride solution. It is argued that the chloride penetration is definitively influenced by the load and cracking conditions, which promoted a higher penetration depth leading to a severe fibres corrosion, which also compromised the mechanical performance of FRCC.Green Open Access added to TU Delft Institutional Repository âYou share, we take care!â â Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Materials and Environmen
Chloride ion penetration into cracked UHPFRC during wetting-drying cycles
The subject of this paper is the extent to which, during wettingâdrying cycles, chloride ions can penetrate Ultra-high-Performance Fibre Reinforced Cementitious Composites (UHPFRC) specimens subjected to combined mechanical and environmental load. Pre-cracking was obtained by subjecting prismatic specimens (40 40 60mm3) to four-point bending until a predefined crack opening displacement (COD) is reached, using a dedicated test setup. Three target CODs were studied: 300, 350 and 400 ÎŒm. Exposure to a concentrated chloride solution (3.5% NaCl) was used as an environmental load. Specimens we subjected to wettingâdrying cycles for one year. After this exposure period, the chloride penetration was characterised both qualitatively (by colourimetric analysis with silver nitrate) and quantitatively (by determining the chloride profile). The effect of
damage level on chloride penetration and its impact on structures durability is discussed in the current paper.This work was financially supported by: Base FundingâUIDB/04708/2020
and Programmatic FundingâUIDP/04708/2020 of the CONSTRUCTâInstituto de I&D em
Estruturas e ConstruçÔesâfunded by national funds through the FCT/MCTES (PIDDAC); by the
project POCI-01-0145-FEDER-031777ââUHPGRADEâNext generation of ultra-high perfor mance fibre-reinforced cement-based composites for rehabilitation and strengthening of the
existing infrastructureâ funded by FEDER funds through COMPETE2020âPrograma
Operacional Competitividade e Internacionalização (POCI) and by national funds (PIDDAC)
through FCT/MCTES; and by FCTâFundação para a CiĂȘncia e a Tecnologia through the PhD
scholarship PD/BD/113636/2015, attributed within the Doctoral Program in Eco-Efficient
Construction and Rehabilitation (EcoCoRe). Stefan Chaves Figueiredo would like to acknowledge the funding from Science without Borders from the National Council for Scientific and
Technological Development of Brazil (201620/2014-6). Collaboration and materials supply by
Sines Refinery/Galp Energia, Secil, Omya Comital, Sika, Bekaert and EUROMODAL is gratefully
acknowledged
Durability of an UHPFRC under mechanical and chloride loads
The high cost of UHPFRC is a limitation on the practical application in real construction projects. However, a very competitive UHPFRC approach is the hybrid structural elements, where thin layers of UHPFRC are
employed to rehabilitate/strengthen damage cover concrete. New layers subjected to harsh conditions (loads and/or environmental) can eventually crack under service conditions, changing the local transport properties and thus, a faster ingress of detrimental substances occur, such as chlorides ions. Most of the studies on chloride penetration in UHPFRC have focused on determining the transport properties of sound, non-cracked specimens.
Thus, an experimental campaign was carried out to assess chloride ingress in loaded and/or cracked UHPFRC and the effect of such ions on mechanical performance. Typical service cracks patterns were imposed on UHPFRC specimens and then exposed to wetting?drying cycles in a chloride solution. After 1-year chloride exposure, UHPFRC specimens were in good condition with no significant losses in flexural strength; however, stiffness might be affected. The chloride contents up to 20 mm depth were superior to the European standards critical chloride content. A minimum cover depth of 20 mm of new UHPFRC is recommended to protect a concrete substrate in hybrid structures for exposure classes XS3.This work was financially supported by: Base Funding - UIDB/04708/2020 and Programmatic Funding - UIDP/04708/2020 of the CONSTRUCT - Instituto de I&D em Estruturas e ConstruçÔes - by national funds through the FCT/MCTES (PIDDAC).; by the project POCI01-0145-FEDER-031777 â âUHPGRADE â Next generation of ultra-high performance fibre-reinforced cement based composites for rehabilitation and strengthening of the existing infrastructureâ funded by FEDER funds through COMPETE2020 â Programa Operacional Competitividade e Internacionalização (POCI) and by national funds (PIDDAC) through
FCT/MCTES; and by FCT â Fundação para a CiĂȘncia e a Tecnologia through the PhD scholarship PD/BD/113636/2015, attributed within the Doctoral Program in Eco-Efficient Construction and Rehabilitation
(EcoCoRe). Stefan Chaves Figueiredo would like to acknowledge the funding from Science without Borders from the National Council for Scientific and Technological Development of Brazil (201620/2014-6)
Chloride Ion Penetration into Cracked UHPFRC During Wetting-drying Cycles
The subject of this paper is the extent to which, during wettingâdrying cycles, chloride ions can penetrate Ultra-high-Performance Fibre Reinforced Cementitious Composites (UHPFRC) specimens subjected to combined mechanical and environmental load. Pre-cracking was obtained by subjecting prismatic specimens (40 Ă 40 Ă 60mm3) to four-point bending until a predefined crack opening displacement (COD) is reached, using a dedicated test setup. Three target CODs were studied: 300, 350 and 400 ”m. Exposure to a concentrated chloride solution (3.5% NaCl) was used as an environmental load. Specimens we subjected to wettingâdrying cycles for one year. After this exposure period, the chloride penetration was characterised both qualitatively (by colourimetric analysis with silver nitrate) and quantitatively (by determining the chloride profile). The effect of damage level on chloride penetration and its impact on structures durability is discussed in the current paper.Green Open Access added to TU Delft Institutional Repository âYou share, we take care!â â Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Materials and Environmen
Durability of an UHPFRC under mechanical and chloride loads
The high cost of UHPFRC is a limitation on the practical application in real construction projects. However, a very competitive UHPFRC approach is the hybrid structural elements, where thin layers of UHPFRC are employed to rehabilitate/strengthen damage cover concrete. New layers subjected to harsh conditions (loads and/or environmental) can eventually crack under service conditions, changing the local transport properties and thus, a faster ingress of detrimental substances occur, such as chlorides ions. Most of the studies on chloride penetration in UHPFRC have focused on determining the transport properties of sound, non-cracked specimens. Thus, an experimental campaign was carried out to assess chloride ingress in loaded and/or cracked UHPFRC and the effect of such ions on mechanical performance. Typical service cracks patterns were imposed on UHPFRC specimens and then exposed to wettingâdrying cycles in a chloride solution. After 1-year chloride exposure, UHPFRC specimens were in good condition with no significant losses in flexural strength; however, stiffness might be affected. The chloride contents up to 20Â mm depth were superior to the European standards critical chloride content. A minimum cover depth of 20Â mm of new UHPFRC is recommended to protect a concrete substrate in hybrid structures for exposure classes XS3.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Materials and Environmen
Durability of an UHPFRC under mechanical and chloride loads
The high cost of UHPFRC is a limitation on the practical application in real construction projects. However, a very competitive UHPFRC approach is the hybrid structural elements, where thin layers of UHPFRC are employed to rehabilitate/strengthen damage cover concrete. New layers subjected to harsh conditions (loads and/or environmental) can eventually crack under service conditions, changing the local transport properties and thus, a faster ingress of detrimental substances occur, such as chlorides ions. Most of the studies on chloride penetration in UHPFRC have focused on determining the transport properties of sound, non-cracked specimens. Thus, an experimental campaign was carried out to assess chloride ingress in loaded and/or cracked UHPFRC and the effect of such ions on mechanical performance. Typical service cracks patterns were imposed on UHPFRC specimens and then exposed to wettingâdrying cycles in a chloride solution. After 1-year chloride exposure, UHPFRC specimens were in good condition with no significant losses in flexural strength; however, stiffness might be affected. The chloride contents up to 20Â mm depth were superior to the European standards critical chloride content. A minimum cover depth of 20Â mm of new UHPFRC is recommended to protect a concrete substrate in hybrid structures for exposure classes XS3.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Materials and Environmen
Chloride Ion Penetration into Cracked UHPFRC During Wetting-drying Cycles
The subject of this paper is the extent to which, during wettingâdrying cycles, chloride ions can penetrate Ultra-high-Performance Fibre Reinforced Cementitious Composites (UHPFRC) specimens subjected to combined mechanical and environmental load. Pre-cracking was obtained by subjecting prismatic specimens (40 Ă 40 Ă 60mm3) to four-point bending until a predefined crack opening displacement (COD) is reached, using a dedicated test setup. Three target CODs were studied: 300, 350 and 400 ”m. Exposure to a concentrated chloride solution (3.5% NaCl) was used as an environmental load. Specimens we subjected to wettingâdrying cycles for one year. After this exposure period, the chloride penetration was characterised both qualitatively (by colourimetric analysis with silver nitrate) and quantitatively (by determining the chloride profile). The effect of damage level on chloride penetration and its impact on structures durability is discussed in the current paper.</p
Getting to know the Other: breaking borders
Actualmente, las perspectivas sobre Ăfrica van evolucionando hacia una mejor comprensiĂłn de sus fenĂłmenos culturales y literarios. El diĂĄlogo en el aula de Lengua Portuguesa y el anĂĄlisis de autores africanos y afrodescendientes contribuyen a un debate constructivo, mĂĄs allĂĄ de las fronteras nacionales.Depto. de Estudios RomĂĄnicos, Franceses, Italianos y TraducciĂłnFac. de FilologĂaFALSEsubmitte