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APLICAÇÃO DA LEI DOS GRANDES GERADORES DE RESÍDUOS SÓLIDOS DO DISTRITO FEDERAL NOS SUPERMERCADOS DE PLANALTINA
No full textThe present study aims to evaluate the application of District Law No. 5,610/16 - Law of Large Generators (GG) in supermarket retail in Planaltina/DF. It is a multi-case study, characterized as exploratory and descriptive, with a qualitative-quantitative approach. Data were obtained through structured interviews with managers from 24 establishments and on-site observations. The results indicated that 38% of supermarkets do not know the Law of GG and 39% are registered with the Urban Cleaning Service of the DF as GG and partially comply with the law. Only 52% of supermarkets have a Solid Waste Management Plan, in accordance with Law No. 12,305 and the GG Law. Although the managers of the establishments recognize the environmental benefits of the law, they do not feel responsible for the correct disposal of waste. The study demonstrates that the evaluated supermarkets are in different situations of compliance with federal and district legislation, lacking adjustments in waste management.El presente estudio tiene como objetivo evaluar la aplicación de la Ley Distrital nº 5.610/16 - Ley de Grandes Generadores (GG) en la venta al por menor de supermercados en Planaltina/DF. Se trata de un estudio multicaso, caracterizado por ser exploratorio y descriptivo, con abordaje cualitativo-cuantitativo. Los datos se obtuvieron a través de entrevistas estructuradas con gerentes de 24 establecimientos y observaciones in situ. Los resultados indicaron que el 38% de los supermercados no conocen la Ley de GG y el 39% están registrados en el Servicio de Aseo Urbano del DF como GG y cumplen parcialmente con la ley. Solo el 52% de los supermercados cuentan con un Plan de Manejo de Residuos Sólidos, de acuerdo con la Ley N° 12.305 y la Ley GG. Si bien los encargados de los establecimientos reconocen los beneficios ambientales de la ley, no se sienten responsables por la correcta disposición de los residuos. El estudio demuestra que los supermercados evaluados se encuentran en diferentes situaciones de cumplimiento de la legislación federal y distrital, careciendo de adecuaciones en el manejo de residuos.O presente estudo tem por objetivo avaliar a aplicação da Lei Distrital no 5.610/16 – Lei dos Grandes Geradores (GG) no varejo supermercadista de Planaltina/DF. É um estudo multicasos, caracterizando-se como exploratório e descritivo, com abordagem quali-quantitativa. Os dados foram obtidos por meio de entrevistas estruturadas realizadas com gestores de 24 estabelecimentos e observações in loco. Os resultados indicaram que 38% dos supermercados não conhecem a Lei dos GG e 39% estão cadastrados no Serviço de Limpeza Urbana do DF como GG e cumprem a lei de forma parcial. Apenas 52% dos supermercados possuem Plano de Gerenciamento de Resíduos Sólidos, conforme Lei no 12.305 e Lei dos GG. Apesar dos gestores dos estabelecimentos reconhecerem os benefícios ambientais da lei, não se sentem responsáveis pela correta destinação dos resíduos. O estudo demonstra que os supermercados avaliados estão em diferentes situações de atendimento à legislação federal e distrital, carecendo de adequações no manejo de resíduos
MAPEAMENTO DAS EXPERIÊNCIAS DE COLETA SELETIVA EM CIDADE DE MÉDIO PORTE NA BAHIA E PROPAGAÇÃO ATRAVÉS DE MÍDIAS SOCIAIS
No full textThe generation of solid waste in Brazil is a problem in constant expansion. Much of this material is not reused, reused or recycled and, in most cases, it is incorrectly disposed of in nature, causing several socio-environmental problems. This work aimed to map the experiences of selective collection and recycling in the city of Jequié (Bahia) and disseminate them through social media. The methodological approach combined bibliographic research, field research in a virtual environment, in loco observation to identify and survey the voluntary delivery stations (PEVs) and Ecopoints available for the disposal of household solid waste. The theoretical practical results consisted of the elaboration of informative/educational content and the creation of pages on social networks to disseminate the identified experiences, as well as the PEVs and Ecopoints. This intervention can constitute an important tool for environmental education and collaborate in the mitigation of problems related to solid waste, especially at the local level.La generación de residuos sólidos en Brasil es un problema en constante expansión. Gran parte de este material no es reutilizado, reutilizado o reciclado y, en la mayoría de los casos, es desechado de forma incorrecta en la naturaleza, provocando diversos problemas socioambientales. Este trabajo tuvo como objetivo mapear las experiencias de recolección selectiva y reciclaje en la ciudad de Jequié (Bahía) y difundirlas a través de las redes sociales. El enfoque metodológico combinó investigación bibliográfica, investigación de campo en ambiente virtual, observación in loco para identificar y relevar las estaciones de entrega voluntaria (PEV) y Ecopuntos disponibles para la disposición de residuos sólidos domiciliarios. Los resultados teórico-prácticos consistieron en la elaboración de contenidos informativos/educativos y la creación de páginas en redes sociales para difundir las experiencias identificadas, así como los PEV y Ecopuntos. Esta intervención puede constituir una herramienta importante para la educación ambiental y colaborar en la mitigación de los problemas relacionados con los residuos sólidos, especialmente a nivel local.A geração de resíduos sólidos no Brasil é uma problemática em constante expansão. Grande parte desse material não é reaproveitado, reutilizado ou reciclado e, na maioria das vezes, é descartado de forma incorreta na natureza causando diversos problemas socioambientais. Este trabalho teve como objetivo realizar um mapeamento das experiências de coleta seletiva e reciclagem na cidade de Jequié (Bahia) e divulgá-las através de mídias sociais. O percurso metodológico conjugou pesquisa bibliográfica, pesquisa de campo em ambiente virtual, observação in loco para identificação e levantamento dos postos de entrega voluntária (PEVs) e Ecopontos disponíveis para a destinação dos resíduos sólidos domiciliares. Os resultados, teórico-práticos, consistiram na elaboração de conteúdos informativos/educativos e criação de páginas em redes sociais para divulgação das experiências identificadas, bem como dos PEVs e Ecopontos. Esta intervenção pode se constituir em uma importante ferramenta de educação ambiental e colaborar na mitigação dos problemas relativos aos resíduos sólidos, principalmente no âmbito local
BAMBUSA TULDOIDES: ANÁLISE DE VIABILIDADE DA PRODUÇÃO DE COMPÓSITOS DE FIBRAS DE BAMBU E ACETATO DE POLIVINILA
No full textAlthough the increase in the world population has generated a substantial advance in wood consumption, the supply of this material from both natural forests and reforestation has decreased. According to Mera (2014) the alternative for replacing wood is bamboo because it is the most remarkable material for reducing the pressure on natural forest resources. This research presented the evaluation of the potentiality for the manufacture of composite panels of bamboo particles of the species Bambusa tuldoides with PVAc. The physical and mechanical properties of the composite were evaluated according to abnt nbr 14810-2 (2013), NBR 7190 (1997), ANSI A208 (1999), EN 310 (1993), WPIF 2G (2018) for density determination, swelling in thickness, water absorption, Modulus of Elasticity and Rupture Modulus in compression and bending tests. Despite the diversity, the results of the present study were satisfactory and, therefore, indicate technological potential for the production of composite panels.Embora o aumento da população mundial tenha gerado um avanço substancial no consumo da madeira o fornecimento deste material tanto das florestas naturais quanto de reflorestamentos tem diminuído. Conforme Mera (2014) a alternativa para a substituição da madeira é o bambu pois é o material mais notável para diminuição da pressão sobre os recursos naturais florestais. Esta pesquisa apresentou a avaliação da potencialidade para confecção de painéis compósitos de partículas de bambu da espécie Bambusa tuldoides com PVAc. Foram avaliadas as propriedades físicas e mecânicas do compósito segundo as normas ABNT NBR 14810-2 (2013), NBR 7190 (1997), ANSI A208 (1999), EN 310 (1993), WPIF 2G (2018) para a determinação da densidade, inchamento em espessura, absorção d’água, Módulo de Elasticidade e Módulo de Ruptura em ensaios de compressão e flexão. Apesar da diversidade, os resultados da presente pesquisa foram satisfatórios e, portanto, indicam potencialidade tecnológica para a produção de painéis compósitos
INFLUÊNCIA DA ADIÇÃO DE GOMA DE ALFARROBA NAS PROPRIEDADES DE FILMES À BASE DE PROTEÍNA DE SOJA
No full textSoy protein is the most important representative of legume protein and has presented high potential to manufacture films. Blends between protein and polysaccharide can to improve the performance, stability, functionality and resistance of biopolymer films in comparison to simple films. This work aims to develop composite films with soy protein isolate (SPI) and soy protein concentrate (SPC) and different locust bean gum (LBG) concentration, as well as, to evaluate the effect of polysaccharide addition on optical and mechanical properties, water vapor barrier, color, microstructure, solubility and moisture of the SPI and SPC films. For this purpose, composite films were elaborated varying LBG concentration (0; 0.05; 0.1; 0.2; 0.3; 0.4%) and fixing SPI and SPC (5%) concentration in solution. Glycerol was used in all formulations as plasticizer. Microstructure, solubility, moisture, water vapor permeability, optical and mechanical properties of the simple and composite films were evaluated. The solubility and film barrier to the light was increased in SPI films with LBG addition, but was not changed in SPC films with gum addition.All composite films presented higher tensile strength values than simple films. The lightness of composite films was smaller than simple films, however water vapor barrier was similar.A proteína de soja é o mais importante representante da proteína de leguminosa e tem apresentado alto potencial para a fabricação de filmes. As misturas entre proteínas e polissacarídeos podem melhorar o desempenho, estabilidade, funcionalidade e resistência de filmes de biopolímero em comparação com filmes simples. Este trabalho tem como objetivo desenvolver filmes compostos com isolado protéico de soja (SPI) e concentrado protéico de soja (SPC) e diferentes concentrações de goma de alfarroba (LBG), bem como, avaliar o efeito da adição de polissacarídeo nas propriedades óticas e mecânicas. barreira, cor, microestrutura, solubilidade e umidade dos filmes SPI e SPC. Para tanto, foram elaborados filmes compostos variando a concentração de LBG (0; 0,05; 0,1; 0,2; 0,3; 0,4%) e fixando a concentração de SPI e SPC (5%) em solução. O glicerol foi utilizado em todas as formulações como plastificante. Foram avaliadas a microestrutura, solubilidade, umidade, permeabilidade ao vapor de água, propriedades ópticas e mecânicas dos filmes simples e compostos. A solubilidade e barreira do filme à luz foram aumentadas em filmes SPI com adição de LBG, mas não foram alteradas em filmes SPC com adição de goma.Todos os filmes compostos apresentaram valores de resistência à tração mais elevados do que os filmes simples. A leveza dos filmes compostos foi menor do que os filmes simples, porém a barreira de vapor de água foi semelhante
Características cognitivas e comportamentais de altos executivos: Revisão sistemática de literatura e proposição de agenda de pesquisa
No full textEste estudo teve como objetivo construir uma agenda de pesquisa sobre as características cognitivas e comportamentais de altos executivos, sob a lente da Teoria do Alto Escalão. Trata-se de um estudo de análise bibliométrica, por meio de seleção de artigos da base de dados Web of Science. Foram analisados 154 artigos. Os resultados mostraram que o pico de publicações sobre o tema ocorreu nos anos de 2018 e 2020; o Strategic Management Journal publicou 11,69% da produção total sobre o tema; os autores como Peterson S.J., Simsek Z., e Hambrick D.C se sobressaem em termos de produção sobre o tema. Foi possível encontrar alguns temas convergentes, que merecem atenção dos pesquisadores, tais como, os estilos de liderança, características cognitivas e emocionais, características psicológicas, e processos empresariais. Evidenciaram-se, desse modo, muitas lacunas no campo da Psicologia, no que diz respeitos a mensuração de características psicológicas, cognitivas e emocionais, que venham a contribuir em termos científicos e práticos para o processo de gestão
INFLUENCE OF THE OBTURATION TECHNIQUE ON THE QUALITY OF OBTURATIONS ASSESSED BY MICRO-CT: A SYSTEMATIC REVIEW
No full textThis systematic review aimed to investigate the influence of the obturation technique on the quality of obturations assessed by computed microtomography (micro-CT). A bibliographic search was performed in six electronic databases (PubMed, Cochrane, Scopus, Web of Science, EMBASE and Open Gray). The search strategy combined the following terms: “Root canal filling”; “Root canal obturation”; “Obturation technique”; “Root canal filling technique”; “Filling quality”; “Gaps”; “Voids”; “Empty spaces”; “MicroCT”; “Micro-CT”; “Microcomputed tomography. Eligibility criteria based on the PICOS strategy were P - extracted human permanent teeth, I - root canal filling using different techniques. C - lateral condensation technique, O - obturation quality (presence of bubbles and gaps) and S - in vitro studies. The risk of bias (RoB) of the included studies was assessed using an adaptation based on previous systematic reviews. The initial search resulted in 491 studies. 195 studies were excluded because they were duplicates. Of 281 eligible studies, 15 met the inclusion criteria and were selected for full reading. Of these, all were included for analysis. Seven studies had a high risk of bias, seven a moderate, and one had a low risk of bias. None of the obturation techniques were free of bubbles or gaps. Eight studies reported more gaps and bubbles when using the lateral condensation technique when compared to other techniques. One study reported that the lateral condensation had fewer gaps and bubbles when compared to other techniques. Six studies showed no difference in presence among techniques. This systematic review showed that no obturation technique performed on extracted teeth and evaluated by micro-CT is free of bubbles or gaps. This systematic review was registered in the PROSPERO database (CRD42021235037)
SINUSITIS OF ENDODONTIC ORIGIN – CASE REPORT CLINICAL CASE
No full textAn Endodontic infectious inflammatory condition can affect the tissues and mucosa of the maxillary sinus adjacent to the root apex, causing an odontogenic sinusitis. The signs and symptoms that define the condition of an endodontic origin is called endo-antral syndrome, characterized by: an endodontic infection in a tooth close to the maxillary sinus, a periapical radiolucent image related to the affected tooth, loss of the lamina dura around the apex corresponding to the radiographic border of the maxillary sinus, radiopaque image in the maxillary sinus over the apex of the involved tooth and variation of radiopacity degrees in the image of the maxillary sinus affected by the inflammatory process, compared to the maxillary sinus on the opposite side. 40-years old patient, female, reported absence of taste and smells after COVID, tinnitus, severe pain in the right side of her face and temporomandibular disorder (TMD). After CBCT, it was observed that teeth 16 and 17 presented a communication between their roots and the maxillary sinus. Retreatment was performed in teeth 16 and 17 with ultrasonic inserts and Reciproc Blue files (VDW-Germany). Three changes of Ultracal XS dressing were performed until the symptom remission. Teeth were filled with BioRoot RCS sealer and gutta percha cones. After filling, a new CBCT was performed and, 3 months after the retreatments’ beginning, bone repair was already observed. Patient reported no more pain, but still presenting tinnitus. We conclude that as long as properly diagnosed, it is possible to treat odontogenic sinusitis through endodontic treatments. The use of CBCT becomes a potential tool for the diagnosis of this condition
EVALUATION OF THE DENTINAL TUBULE PENETRATION OF AN ENDODONTIC BIOCERAMIC SEALER AFTER THREE FINAL IRRIGATION PROTOCOLS
No full textIntroduction: This study aimed to evaluate the dentinal tubule penetration of an endodontic bioceramic sealer, Sealer Plus BC, after three final irrigation protocols. Methods: Thirty distobuccal roots of maxillary molars were selected. Root canal preparation was performed up to an #40.06 instrument (X1 Blue) under 2.5% sodium hypochlorite irrigation. Specimens were randomly divided into three groups (n=10), according to the final irrigation protocol: G-NaOCl (2.5% sodium hypochlorite + PUI), G-SS (0.9% saline solution + PUI) and G-H20 (Deionized water + PUI). After final irrigation protocols, all specimens were irrigated with phosphate buffer solution. Root canal obturation was performed using the single cone technique and Sealer Plus BC, stained with a specific fluorophore. Specimens were transversely sectioned and each root third was evaluated in a confocal scanning laser microscopy. Images obtained were analyzed for sealer penetration in the dentinal tubules.
Results: Dentinal tubule penetration of Sealer Plus BC was not observed in any root third, regardless of the final irrigation protocol investigated.
Conclusions: Sealer Plus BC dentinal tubule penetration was not observed after none of the protocols tested. Dentinal tubule penetrability of Sealer Plus BC may be related to other factors rather than the final irrigation protocol. Introduction: This study aimed to evaluate the dentinal tubule penetration of an endodontic bioceramic sealer, Sealer Plus BC, after three final irrigation protocols. Methods: Thirty distobuccal roots of maxillary molars were selected. Root canal preparation was performed up to an #40.06 instrument (X1 Blue) under 2.5% sodium hypochlorite irrigation. Specimens were randomly divided into three groups (n=10), according to the final irrigation protocol: G-NaOCl (2.5% sodium hypochlorite + PUI), G-SS (0.9% saline solution + PUI) and G-H20 (Deionized water + PUI). After final irrigation protocols, all specimens were irrigated with phosphate buffer solution. Root canal obturation was performed using the single cone technique and Sealer Plus BC, stained with a specific fluorophore. Specimens were transversely sectioned and each root third was evaluated in a confocal scanning laser microscopy. Images obtained were analyzed for sealer penetration in the dentinal tubules.
Results: Dentinal tubule penetration of Sealer Plus BC was not observed in any root third, regardless of the final irrigation protocol investigated.
Conclusions: Sealer Plus BC dentinal tubule penetration was not observed after none of the protocols tested. Dentinal tubule penetrability of Sealer Plus BC may be related to other factors rather than the final irrigation protocol
CYCLIC AND TORSIONAL FATIGUE RESISTANCE OF THREE DIFFERENT THERMALLY TREATED NICKEL-TITANIUM ROTARY INSTRUMENTS
No full textBackground: The aim of this study was to evaluate the cyclic fatigue and torsional fatigue resistance of three thermally treated rotary instruments, such as: Logic 2 25.05 (LOG 25.05), Edge Taper Platinum 25.06 (EDT 25.06) and ProTaper Gold 25.08 (PTG 25.08).Methods: A total of 60 rotary instruments of LOG 25.05, EDT 25.06 and PTG 25.08 were used (n=20). Cyclic fatigue tests were performed at 36°C using an artificial stainless steel canal with a 60o angle and a 5-mm radius of curvature. The time (in seconds) and number of cycles to fracture (NCF) was recorded. The torsional test evaluated the torque and angle of rotation to failure at 3 mm from the tip according to ISO 3630-1. The fractured surface of each fragment was observed by using scanning electron microscopy (SEM). Data were analyzed using one-way ANOVA and Holm-Sidak’s tests for multiple comparison, the level of significance was set at 5%.
Results: EDT 25.06 had highest cyclic fatigue resistance (time and NFC), followed by LOG 25.05 and PTG 25.08 (P<0.05). There were no significantly difference between LOG 25.05 and ETP 25.06 regarding the NCF (P>0.05). In relation the torsional test, the LOG 25.05 and ETP 25.06 presented similar torque (P>0.05). The PTG presented greater torque than the other groups (P<0.05). The PTG 25.08 presented the lowest angular rotation to fracture than the other groups (P<0.05). The SEM images demonstrated typical features of cyclic and torsional fracture.Background: The aim of this study was to evaluate the cyclic fatigue and torsional fatigue resistance of three thermally treated rotary instruments, such as: Logic 2 25.05 (LOG 25.05), Edge Taper Platinum 25.06 (EDT 25.06) and ProTaper Gold 25.08 (PTG 25.08).Methods: A total of 60 rotary instruments of LOG 25.05, EDT 25.06 and PTG 25.08 were used (n=20). Cyclic fatigue tests were performed at 36°C using an artificial stainless steel canal with a 60o angle and a 5-mm radius of curvature. The time (in seconds) and number of cycles to fracture (NCF) was recorded. The torsional test evaluated the torque and angle of rotation to failure at 3 mm from the tip according to ISO 3630-1. The fractured surface of each fragment was observed by using scanning electron microscopy (SEM). Data were analyzed using one-way ANOVA and Holm-Sidak’s tests for multiple comparison, the level of significance was set at 5%.
Results: EDT 25.06 had highest cyclic fatigue resistance (time and NFC), followed by LOG 25.05 and PTG 25.08 (P<0.05). There were no significantly difference between LOG 25.05 and ETP 25.06 regarding the NCF (P>0.05). In relation the torsional test, the LOG 25.05 and ETP 25.06 presented similar torque (P>0.05). The PTG presented greater torque than the other groups (P<0.05). The PTG 25.08 presented the lowest angular rotation to fracture than the other groups (P<0.05). The SEM images demonstrated typical features of cyclic and torsional fracture
PESQUISA DE CLIMA ORGANIZACIONAL EM UMA INSTITUIÇÃO FINANCEIRA, DE BLUMENAU SC
No full textFaz-se necessário que as instituições financeiras saibam como está a motivação de seus colaboradores sabendo-se, que tal aspecto influencia diretamente na produtividade, na qualidade dos produtos e serviços e no atendimento dos clientes externos. Neste sentido, a vivencia e percepção empírica de fatores que indicam a perspectiva por parte dos colaboradores da instituição financeira, resultaram neste
estudo de caso, com foco na gestão do clima organizacional. Desta forma, objetivou-se caracterizar a percepção dos colaboradores em relação aos principais aspectos que afetam o clima organizacional na instituição; bem como analisar a percepção dos gestores frente ao clima organizacional e confrontando com as respostas dos colaboradores, identificando assim, os fatores que afetam os níveis de motivação e comprometimento junto a instituição, e seus reflexos no clima organizacional. A pesquisa foi realizada através de questionários e entrevista, sendo que os dados
quantitativos foram tabulados e descritos em gráficos, e os dados qualitativos apresentam a visão do gestor quanto aos fatores que influenciam o clima organizacional da instituição. Os resultados revelam que a instituição se encontra em um clima positivo em sua maioria, apresentando algumas deficiências quanto a comunicação interna e as metas estabelecidas que geram, de acordo com os colaboradores: pressão e stress. Com base nos conhecimentos proporcionados pela pesquisa, tanto teórica quanto práticas, foram sugeridas melhorias ao ambiente de trabalho, criando assim, um clima agradável e suscetível á busca de melhores
resultados, ou seja ao sucesso da instituição, e seus colaboradores, tanto no âmbito profissional quanto pessoal.
Palavras chave: Gestão de pessoas, Clima Organizacional e pesquisa do clima organizacional