The Effect of Polymerization Cycles on Color Stability of Microwave-Processed Denture Base Resin

Purpose: This study evaluated the effect of different microwave polymerization cycles on the color changes of a microwave-processed denture base resin after accelerated aging and immersion in beverages. Materials and Methods: Specimens of light pink acrylic resin were divided into three groups according to polymerization cycle: (A) 500 W for 3 minutes, (B) 90 W for 13 minutes + 500 W for 90 seconds, and (C) 320 W for 3 minutes + 0 W for 4 minutes + 720 W for 3 minutes. Control groups were a heat-processed acrylic resin (T) and a chemically activated denture repair resin (Q). Eight specimens per group were aged in an artificial aging chamber and evaluated at 20, 192, and 384 hours. Another series of 40 specimens per group were immersed in water, coffee, tea, cola, or red wine and evaluated at 1, 12, and 36 days. Color was measured by a spectrophotometer before and after aging or immersion. Color changes (Delta E) were analyzed by ANOVA/Bonferroni t-test (alpha = 0.05). Results: Mean Delta E (+/- SD) after 384 hours of accelerated aging were (A) 2.51 +/- 0.50; (B) 3.16 +/- 1.09; (C) 2.89 +/- 1.06; (T) 2.64 +/- 0.34; and (Q) 9.03 +/- 0.40. Group Q had a significantly higher Delta E than the other groups. Color changes of immersed specimens were significantly influenced by solutions and time, but the five groups showed similar values. Mean Delta E at 36 days were (water) 1.4 +/- 0.8; (coffee) 1.3 +/- 0.6; (tea) 1.7 +/- 0.5; (cola) 1.4 +/- 0.7; and (red wine) 10.2 +/- 2.7. Results were similar among the five test groups. Conclusions: Color changes of the microwave-polymerized denture base resin tested were not affected by different polymerization cycles after accelerated aging or immersion in beverages. These changes were similar to the conventional heat-polymerized acrylic resin test, but lower than the repair resin after accelerated aging.

Metas do Conselho Nacional de Justi??a 2012/2013: uma an??lise dos contornos gerenciais assumidos pela reforma do poder judici??rio no Brasil

Este artigo tem como objetivo avan??ar no estudo do processo de reforma do Poder Judici??rio brasileiro, o qual se insere no processo de reforma do Estado p??trio. A partir das contribui????es de Osborne e Gaebler (1992) e Abrucio (2006), buscou-se tra??ar um paralelo entre as l??gicas gerencial e fiscal e esclarecer como as mesmas refletiram nos indicadores de efic??cia, efici??ncia e efetividade do Poder Judici??rio no Brasil. Para atingir o objetivo proposto, optou-se por utilizar como m??todo a an??lise de conte??do de Bardin (2002), pela regra de enumera????o do tipo frequ??ncia, buscando, com isso, observar o papel que o Conselho Nacional de Justi??a exerceu nesse processo e a l??gica do plano de metas estabelecido pela institui????o para os anos de 2012 e 2013. Como resultado, observou-se que as metas estabelecidas para o bi??nio buscaram implantar uma gest??o mais eficaz nesse n??cleo estrat??gico do Estado, com ??nfase na celeridade processual, gest??o administrativa e informatiza????o dos procedimentos. Percebeu-se que a l??gica gerencial continua exercendo grande influ??ncia no modelo de gest??o adotado. Como novidade, verificou-se a inser????o de indicadores de efetividade, os quais podem permitir aproximar os objetivos dessa esfera de poder com os da sociedade brasileira, repercutindo na elabora????o de metas futuras.

Conselho Nacional de Juventude: rede de pol??ticas p??blicas?

O presente trabalho representa uma tentativa de avaliar se o Conselho Nacional de Juventude da Secretaria Geral da Presid??ncia da Rep??blica pode ser entendido como uma rede de pol??ticas p??blicas, conforme a vis??o de Bonafont (2004). Para realizar essa avalia????o optou-se, inicialmente, pela abordagem da an??lise de redes de pol??ticas p??blicas qualitativa e por alguns itens avaliativos. Assim, foram realizadas entrevistas, al??m de pesquisas documentais em livros, boletins informativos, documentos oficiais, s??tios eletr??nicos e outras fontes de informa????es que auxiliaram a montar o hist??rico do Conselho, mapear as suas caracter??sticas, a estrutura, a forma de atua????o e a rela????o entre seus atores. O estudo mostra que, apesar do aumento de capital social trazido pela cria????o de um espa??o p??blico de discuss??o de pol??ticas p??blicas de juventude, o Conselho ainda n??o pode ser considerado uma rede de pol??ticas p??blicas. Identificou-se, principalmente, falta de consenso sobre o tema, aus??ncia de elabora????o de diretrizes sobre as pol??ticas p??blicas de juventude, bem como a inexist??ncia de um conceito ??nico de juventude compartilhado entre seus integrantes. Entretanto, vislumbram-se possibilidades concretas de surgimento de tal estrutura caso alguns requisitos, discutidos no artigo, estejam presentes em futuras realiza????es desse ??rg??o.

Pol??ticas judici??rias no Brasil: o judici??rio como autor de pol??ticas p??blicas

O artigo salienta a import??ncia de se incorporar o Poder Judici??rio nos estudos de pol??ticas p??blicas, sobretudo a partir do foco sobre as a????es desenvolvidas pelos tribunais e, principalmente, pelo Conselho Nacional de Justi??a. Devido ao papel estrat??gico do Judici??rio nas democracias contempor??neas, urge-se compreender melhor as transforma????es experimentadas no Brasil e em diversos pa??ses, sobretudo a partir do fortalecimento dos conselhos encarregados de prover maior accountability, coordena????o e controle para os sistemas judiciais. A partir das especificidades da Justi??a brasileira, o CNJ assume um papel central de concep????o e elabora????o de pol??ticas para incrementar a atua????o jurisdicional e torn??-la mais c??lere, efetiva e responsiva ??s necessidades sociais. Prop??e-se ent??o o aprofundamento da an??lise e do debate cr??ticos sobre os fundamentos, din??mica, constru????o institucional, limites e potencialidades dos processos relacionados ?? formula????o e ?? implementa????o de pol??ticas judici??rias.

Perspectives on access to in vitro fertilization in Portugal

OBJECTIVE: To analyze users' reasons for choosing in vitro fertilization treatment in public or private services and to identify their suggestions for improving fertility treatment. METHODS: A qualitative study using an interpretative approach was conducted. Fifteen semi-structured interviews were conducted with patients undergoing in vitro fertilization treatment (nine women, one man and five couples) at home or at their workplace in the districts of Viana do Castelo, Braga, Porto and Lisbon, Portugal, between July 2005 and February 2006. RESULTS: Users evaluated access to in vitro fertilization treatment in public and private services based mainly on their individual experiences and called for more access to less costly, faster and friendlier care with suitable facilities, appropriate time management and caring medical providers. These perceptions were also associated with views on the need for fighting stigmatization of infertility, protecting children's rights and guaranteeing sustainability of health care system. Interviewees sought to balance reduced waiting time and more attentive care with costs involved. The choice of services depended on the users' purchase power and place of residence and availability of attentive care. CONCLUSIONS: Current national policies on in vitro fertilization treatment meet user's demands of promoting access to, and quality, availability and affordability of in vitro fertilization treatment. However, their focus on legal regulation and technical-scientific aspects contrasts with the users' emphasis on reimbursement, insurance coverage and focus on emotional aspects of the treatment. The study showed these policies should ensure insurance coverage, participation of user representatives in the National Council for Assisted Reproductive Technology, promotion of infertility research and certification of fertility laboratories.

Ambientes favoráveis à prática de cuidados de enfermagem: factores determinantes

Mestrado em Intervenção Sócio-Organizacional na Saúde - Ramo de especialização: Políticas de Administração e Gestão de Serviços de Saúde

A utilização da calculadora gráfica no estudo de funções do 10º ano

Dissertação para obtenção do Grau de Mestre em Ensino da Matemática no 3º ciclo do Ensino Básico e no Secundário

Coagulation/flocculation/flotation/nanofiltration processes using Moringa Oleifera as coagulant of Eutrophized river

This study investigated the efficiency of Moringa oleifera (MO) seeds as natural coagulant in coagulation/flocculation/dissolved air flotation (C/F/DAF), followed by nanofiltration (NF) for Microcystis protocystis and microcystin-LR removal. The methodology adopted in this work was performed in two steps: 1) coagulation/flocculation/dissolved air flotation (C/F/DAF) process using the MO extracted in saline solution of potassium chloride (KCl-1M) and sodium chloride (NaCl-1M) in optimum dosage 50 mg·L-1; 2) nanofiltration process using NF90 and NF270 membrane provided Dow Chemical Company®. A working pressure of 8 bar was applied. In all samples were analyzed color, turbidity, pH, cyanobacterial cells count and microcystin concentration. The use of MO seeds as natural coagulant, obtained satisfactory results in the M. protocystis, color and turbidity removal. NF was able to completely remove cyanobacterial cells and microcystins (100 %) from M. protocystis (always under the quantification limit). Therefore, C/F/DAF+NF sequence is a safe barrier against M. protocystis and microcystins in drinking water.

Hemispheric dorsolateral prefrontal cortex lateralization in the regulation of empathy for pain

The dorsolateral prefrontal cortex (DLPFC) is involved in the cognitive appraisal and modulation of the pain experience. In this sham-controlled study, with healthy volunteers, we used bi-hemispheric transcranial direct current stimulation (tDCS) over the DLPFC to assess emotional reactions elicited by pain observation. Left-cathodal/right-anodal tDCS decreased valence and arousal evaluations compared to other tDCS conditions. Compared to sham condition, both left-cathodal/right-anodal and left-anodal/right-cathodal tDCS decreased hostility, sadness and self-pain perception. These decreased sensations after both active tDCS suggest a common role for left and right DLPFC in personal distress modulation. However, the differences in arousal and valence evaluations point to distinct roles of lateralized DLPFC in cognitive empathy, probably through distinct emotion regulation mechanisms.

Metabolic profiling and classification of propolis samples from Southern Brazil: an NMR-based platform coupled with machine learning

The chemical composition of propolis is affected by environmental factors and harvest season, making it difficult to standardize its extracts for medicinal usage. By detecting a typical chemical profile associated with propolis from a specific production region or season, certain types of propolis may be used to obtain a specific pharmacological activity. In this study, propolis from three agroecological regions (plain, plateau, and highlands) from southern Brazil, collected over the four seasons of 2010, were investigated through a novel NMR-based metabolomics data analysis workflow. Chemometrics and machine learning algorithms (PLS-DA and RF), including methods to estimate variable importance in classification, were used in this study. The machine learning and feature selection methods permitted construction of models for propolis sample classification with high accuracy (>75%, reaching 90% in the best case), better discriminating samples regarding their collection seasons comparatively to the harvest regions. PLS-DA and RF allowed the identification of biomarkers for sample discrimination, expanding the set of discriminating features and adding relevant information for the identification of the class-determining metabolites. The NMR-based metabolomics analytical platform, coupled to bioinformatic tools, allowed characterization and classification of Brazilian propolis samples regarding the metabolite signature of important compounds, i.e., chemical fingerprint, harvest seasons, and production regions.

Chitosan-based scaffolds for tissue regeneration: preparation and microstructure characterization

Scaffolds are porous three-dimensional supports, designed to mimic the extracellular environment and remain temporarily integrated into the host tissue while stimulating, at the molecular level, specific cellular responses to each type of body tissues. The major goal of the research work entertained herein was to study the microstructure of scaffolds made from chitosan (Ch), blends of chitosan and sodium alginate (Ch/NaAlg), blends of chitosan, sodium alginate and calcium chloride (Ch/NaAlg/CaCl2) and blends of chitosan, sodium alginate and hydroxyapatite (Ch/NaAlg/HA). Scaffolds possessing ideal physicochemical properties facilitate cell proliferation and greatly increase the rate of recovery of a damaged organ tissue. Using CT three-dimensional images of the scaffolds, it was observed that all scaffolds had a porosity in the range 64%-92%, a radius of maximum pore occurrence in the range 95m-260m and a permeability in the range 1×10-10-18×10-10 m2. From the results obtained, the scaffolds based on Ch, Ch/NaAlg and Ch/NaAlg/CaCl2 would be most appropriate both for the growth of osteoid and for bone tissue regeneration, while the scaffold made with a blend of Ch/NaAlg/HA, by possessing larger pores size, might be used as a support for fibrovascular tissue.

Sensitive label-free electron chemical capacitive transducer signal for D-dimer electroanalyses

Supplementary data associated with this article can be found, in the online version, at: http://dx.doi.org/10.1016/j.electacta.2015.09.169.

General Palliative Care Guidance for Control of Pain in Patients with Cancer (PDF 56 KB)

This document is intended to be a practical clinical guideline for the control of pain in patients with cancer. Its target group is hospital staff, primary care team members and nursing home staff. It attempts to apply the clinical principles outlined in the document 'Control of Pain in Patients with Cancer' published by "Scottish Intercollegiate Guidelines Network" (SIGN). This document has been adapted with the permission of SIGN. Rigour of Development A full evidence based reference list is available with the SIGN document. This can be accessed at www.sign.ac.uk. Contents not based on the SIGN document are referenced separately. This document has been developed as one part of the recommendations identified in the Regional Review of Palliative Care Services, 'Partnerships in Caring'. The development of these Pain Guidelines was led by the Northern Ireland Group of the National Council for Hospice and Specialist Palliative Care, whose membership is detailed in Appendix 4. They will be reviewed and updated in two years. A wide consultation process with potential users was undertaken. åÊ åÊ

Meeting the Health, Social Care and Welfare Services Information Needs of Older People

As Chairperson of the National Council on Ageing and Older People, it gives me great pleasure to introduce this report, Meeting the Health, Social Care and Welfare Services Information Needs of Older People in Ireland. The Council has asserted, in previous reports in the past, the need to improve information provision for older people in order to enable them to make informed decisions in relation to their health, social care and welfare services needs and preferences so that they can become partners in their own care. This is consistent with current policy initiatives intended to re-orientate services more towards the older person and to place him/her at the heart of service planning, delivery and evaluation. Download document here

Healthy Ageing in Ireland, Policies, Practice and Evaluation

Healthy Ageing in Ireland, Policies, Practice and Evaluation The National Council on Ageing and Older People (NCAOP) is pleased to present this report, which provides a comprehensive overview of current practice in the promotion of healthy ageing in Ireland. The Council considers â?~healthy ageingâ?T to be a positive concept relating to personal development and the exercise of personal choice. Healthy ageing therefore includes activities that influence social and environmental changes, which promote health, well-being and activities that prevent illness. Click here to download PDF 515kb