Perfil dos Demitidos da Indústria Metropolitana Durante a Crise de 2008 no Brasil

O artigo analisa os efeitos da crise do subprime sobre o mercado de trabalho brasileiro. Através de um modelo de transição, que diferencia os demitidos da crise daqueles não demitidos, investiga características individuais e dos postos de trabalho relacionadas com a probabilidade de demissão. Encontramos que trabalhadores informais, subocupados, com menos tempo de serviço e menor rendimento tiveram maiores chance de demissão. Acerca das características dos indivíduos, as demissões foram maiores nos extremos da escala de idade – jovens e idosos – em comparação aos adultos; menores níveis de escolaridade aumentaram a probabilidade de demissão; mulheres foram mais atingidas que os homens. Os resultados sinalizam que crise acentuou as disparidades no mercado de trabalho

Smart Cities: A Systematic Mapping on an Academic Basis

Smart Cities belong to a multidisciplinary research area, which does not yet have a formal definition and may have different meanings depending on the context. In view of this, the objective of this work is to map the term "Smart City" in the scientific field. For such, the scientific publications present in Scopus\u27 data base, accessed by the Periodicals portal of the Coordination for the Improvement of Higher Level Personnel (CAPES), were researched. As results, 61,435 publications were found, which after the inclusion criteria, 632 publications remained to be analyzed. China was the country that presented the largest number of publications with a total of 94 documents. The analysis of annual publications showed that there was an increase in the number of publications over the years, especially between 2018 and 2019. The main contributions of this work were the provision of a knowledge base that can be used by both scientists and researchers and developers of the organizations, identifying gaps and opportunities to be explored

Portland cement versus MTA as a root-end filling material. A pilot study

PURPOSE To assess periradicular lesions clinically and by computed tomography (CT) after endodontic surgery using either Portland cement or mineral trioxide aggregate (MTA) as a root-end filling material.METHODS: Three patients diagnosed with periradicular lesions by cone-beam CT underwent endodontic surgery with root-end filling. Patient A was treated with MTA as the root-end filling material, patient B was treated with Portland cement and patient C had two teeth treated, one with MTA and the other with Portland cement. Six months after surgery, the patients were assessed clinically and by CT scan and the obtained results were compared.RESULTS: Periradicular tissue regeneration was observed in all cases, with no significant differences in bone formation when comparing the use of MTA and Portland cement as root-end filling materials.CONCLUSION: Both mineral trioxide aggregate and Portland cement were successful in the treatment of periradicular lesions.Univ Vale Sapucai UNIVAS, Sci Appl Hlth, Pouso Alegre, MG, BrazilUniv Vale Sapucai, Sci Appl Hlth, Pouso Alegre, MG, BrazilFed Univ São Paulo UNIFESP, Translat Surg Grad Program, Sci Appl Hlth, UNIVAS, Pouso Alegre, MG, BrazilUniversidade Federal de São Paulo, Div Plast Surg, Dept Surg & Translat Surg Grad Program, São Paulo, BrazilIA CNPq, Med CAPES 3, São Paulo, BrazilFed Univ São Paulo UNIFESP, Translat Surg Grad Program, Sci Appl Hlth, UNIVAS, Pouso Alegre, MG, BrazilUniversidade Federal de São Paulo, Div Plast Surg, Dept Surg & Translat Surg Grad Program, São Paulo, BrazilWeb of Scienc

Synthesis of carbon nanostructures by chemical vapour deposition over Ni-Al co-oxides using plastic solid waste as precursor

Europe contributed with 18.5% of the almost 3!50 Mton of plastics produced worldwide in 2017. Polypropylene (PP) and light and heavy density polyethylene (LOPE and HOPE, respectively) represents near 49.1% of the plastics produced in Europe. Packaging is the main application of these plastics, so typically they have one-single use. In 2014, 25.8 Mton of post-consumer plastic solid wastes (PSWs) ended up in the official waste streams (54.0% of the demanded quantity), 69.2% being recovered through recycling (7.7 Mton) and enen~y recovery processes (10.2 Mton), the remaining 30.8% sent to landfill [1]. Concerns about usage and disposal are diverse and include accumulation of PSWs in landfills and in natural habitats, physic;al problems for wildlife resulting from ingestion or entanglement in plastic and the leaching of chemicals from plastic products [2]. The incineration of PSWs contributes to pollution due to harmful and tC»xic emissions and both incineration and mechanical recycling are costly and may or may not be economically viable in different situations [3]. More attractive strategies are the production of carbon nanomate!rials using PSWs as carbon precursors [4]. In this work, Ni-AI eo-oxide nanoparticles were synthesiz,ed by eo-precipitation and employed as catalysts in the chemical vapour deposition of CNTs when using LOPE as carbon precursor and as model compound of plastic solid waste. Fig. 1 shows the scanning electron micrographs of the carbon nanostructures prepared at 1000 °C during 1 h in a tubular furnace under 10 NmL·min·1 nitrogen flow. As can be observed, CNTs and carbon nanospheres were produced.This work is a result of Project "PLASTIC_TO_FUEL&IMATs - Upcycling Waste Plastics into Fuel and Carbon Nanomaterials", with the reference POCI-01-0145-FEDER-031439, through the Competitiveness and Internationalization Operational Program. supported by the European Regional Development Fund (ERDF); the Associate Laboratory LSRE-LCM- UID/EQU/50020/2019 - funded by national funds through FCT/MCTES (PIDDAC); and CIMO UID/AGR/00690/2019 through FEDER under Program PT2020.info:eu-repo/semantics/publishedVersio

Benchmarking of cleaner production in sand mould casting companies

Purpose: The purpose of this research was to develop new sustainability indicators consistent with the sand mould casting industry, through benchmarking of cleaner production (CP), in order to identify the levels of practice and performance of companies of the casting sector. In addition, a lean manufacturing checklist was specified in order to verify the presence of lean manufacturing techniques employed to eliminate waste towards CP. No previous work was found in the literature that attempts to assess practices and performance of companies performing sand mould casting (a significantly polluting manufacturing process) in the context of CP and lean manufacturing. Design/methodology/approach: For the application of this benchmarking, nine companies from the sand mould casting sector were studied, where the profile of each company was analysed through eight variables and 47 indicators. Data was obtained through face-to-face visits and questionnaire application in the companies, and the data was analysed both quantitatively and qualitatively. Findings: The results obtained were the diagnosis of companies' practices and performance resulting from their position in the benchmarking charts, as well as the identification of the areas in which companies should implement improvements aiming at achieving CP. Research limitations/implications: This research was developed specifically for sand mould casting companies, and each process has its own characteristics Practical implications: 14 companies were invited to participate in this survey, but nine companies agreed to participate. Unfortunately, there were companies that declined to participate in the survey. Originality/value: It is important to diagnose casting companies regarding CP practices, performance and deployment potential. Thus, important negative issues in the company can be identified, and with this information, they can develop actions focussed on cases that need more attention. In addition, this work contributes to evaluate the relationship and efficiency of improvement actions developed by companies in the context of both lean manufacturing and CP, aiming to reduce or eliminate the environmental impact. The improvement of practices and performance of a company regarding CP is considered to be beneficial to supply chain management in the context of sustainability, as the other participating companies are likely to seek ways to reduce environmental impact, and the diagnostics provided by this work may also be used by those companies

Estudo da isquemia quente e reperfusão em membro inferior de ratos: efeito do allopurinol e estreptokinase

Prolonged tissue ischemia leads to changes in microcirculation and production of oxygen free radicals. The event eventually responsible for tissue death is the no-reflow phenomenon and its management is a challenge for the surgeon dealing with replantation or transplantation. We introduce a model of warm ischemia and reperfusion of the lower limb of rats with which we studied the effect of allopurinol and streptokinase. METHOD: Section of the lower limb with preservation of vessels and nerves was performed in 110 rats. Femoral vessels clamped for periods of 0, 2, 4, 6, and 8 hours of ischemia were allowed to reperfuse (groups M0, M2, M4, M6, and M8 respectively). Other groups, E1, E2, and E3, received streptokinase, allopurinol, or a combination of the two drugs after 6 hours of ischemia. RESULTS: Viability rates of the ischemic limbs after 7 days were 100% (M0), 80% (M2), 63.6% (M4), 50% (M6), and 20% (M8). In the experimental groups, E1, E2, and E3, viability rates were 67% (E1), 70% (E2), and 70% (E3). Groups M0, M2, M4, M6, and M8 differed among themselves except for groups M4 and M6. Group E1 had a higher rate of limb viability than M6 (control group) but not than M4. Groups E1, E2 and E3 had higher rates of limb viability than M6 but not than M2 or M4. DISCUSSION: The results suggest that increased viability of limbs after 6 hours of ischemia occurs when allopurinol or streptokinase is used. The combination of the two drugs does not appear to produce any additional effect.A isquemia prolongada dos tecidos leva a alterações na microcirculação e liberação de radicais livres do oxigênio, evento que pode resultar na morte do tecido, conhecido como fenômeno de não reperfusão. Um modelo em ratos de isquemia quente e reperfusão do membro posterior é proposto, e os efeitos dos fármacos alopurinol e estreptoquinase foram estudados. MÉTODO: Secção do membro posterior com preservação dos vasos e nervos foi realizada em 110 ratos. O pinçamento vascular e posterior reperfusão após isquemia quente de 0, 2, 4, 6 e 8 horas formou os grupos M0, M2, M4, M6 e M8 respectivamente. Outros grupos E1, E2 e E3 receberam, respectivamente, alopurinol, estreptoquinase e a combinação de ambas as drogas, após seis horas de isquemia. RESULTADOS: As taxas de viabilidade dos membros isquêmicos, observadas após sete dias foram: M0 - 100%, M2 - 80% ,M4 - 64%,M6 - 50% e M8 - 20%. As taxas de viabilidade dos grupos experimentais foram 67%(E1), 70%(E2) e 70%(E3). Os grupos M0, M2, M4, M6 e M8 foram diferentes entre si exceto os grupos M4 e M6. E1, E2 e E3 resultaram em viabilidade de membros maiores que M6(controle), mas não em relação ao M2 e M4. DISCUSSÃO: Os resultados sugerem um aumento da viabilidade de membros após 6 horas de isquemia quando utilizado os fármacos alopurinol ou estreptoquinase. A associação de estreptoquinase e alopurinol não mostrou efeito adicional

Competence of project management professionals according to type of project: a systematic literature review

Globalization and economic volatility changed the dynamics of production chains, which required new organizational arrangements from companies, leading them to projectization. Additionally, project professionals are managing increasingly complex projects, which demand an extensive and specific set of competences. In this context, this paper aims to identify the competences of project professionals by project type. A systematic literature review was carried out using the Scopus and Web of Sciences academic databases. The research corpus consisted of 209 articles published between 1989 and 2022. As a result, this research identified 173 competences distributed in 14 different project types; some competences have a greater significance for a given project type. As a contribution, when dealing specifically with projects and competences, project professionals, companies, and educational institutions can learn about the fundamental competences by type of project, improve the processes of selection and diagnosis of the professional, adapt educational programs, or even establish plans for project professionals career

O caso do Fundo Monetário Internacional

UID/CCI/04667/2016Em setembro de 2016 a Associação Portuguesa para os Direitos do Consumidores (Deco) realizou um inquérito para aferir o conhecimento que os portugueses tinham sobre as principais organizações nacionais e internacionais. Em antepenúltimo lugar ficou o Fundo Monetário Internacional (FMI). Dada a proximidade temporal entre a vinda do FMI a Portugal e a elaboração desse inquérito, consideramos pertinente analisar a imagem que os portugueses têm sobre a organização que figura entre as instituições de que os portugueses mais ouviram falar, através dos media, nos últimos anos. O desconhecimento dos portugueses relativamente ao FMI é notório nas respostas aos inquéritos, em que apenas 5% dos inquiridos classificaram de forma correta todas as afirmações sobre a instituição: o valor mais baixo dos países em estudo. In September 2016, the Portuguese Association for the Rights of Consumers (Deco) carried out a survey to determine the Portuguese’s knowledge about the main national and international organizations. The International Monetary Fund (IMF) was ranked second-last. Given the time proximity between the IMF’s visit to Portugal and the elaboration of that survey, we deemed appropriate to analyze that organization’s image for the Portuguese, as it is one of the institutions that the Portuguese have heard the most through the media, in recent years. Portuguese people’s ignorance about the IMF is obvious from the answers given to the surveys, whereby only 5% of the respondents correctly classified all the statements about the institution: the lowest value of the countries under study.publishersversionpublishe

Alfabetização matemática de crianças com discalculia/ Mathematical literacy of children with disalculia

A matemática é fundamental e imprescindível, está inserida nas atividades básicas, cotidianas. Não é recente as dificuldades de aprendizagem, apresentadas por alguns alunos desde os anos iniciais, tornando-se perceptível em alguns casos, dificuldades que as intervenções realizadas pelo professor não sanam. Diante dessa problemática a alfabetização matemática se efetiva? Nesse contexto, o objetivo proposto nessa pesquisa é abordar a discalculia como um transtorno que interfere diretamente no processo de alfabetização matemática nos anos iniciais do ensino fundamental. Este trabalho foi produzido a partir de buscas nos Periódicos CAPES, cujos filtros utilizados foram:  discalculia, artigos, português, no período de 2011 a 2019, através de revisão bibliográfica, numa abordagem qualitativa. Dada a relevância do tema, observa-se que há poucas pesquisas específicas sobre a discalculia, muitos profissionais da educação desconhecem o transtorno, em grande parte, deve-se a carência ou deficiência de estudo no decurso de sua formação, dessa forma evidencia-se a necessidade de pesquisas mais profundas sobre o assunto, o que estimula o pesquisador a realizar novos estudos sobre o tema, apresentando resultados que irão  incidir sobre a qualificação dos profissionais em educação que buscam ampliar seus conhecimentos, aperfeiçoar sua prática pedagógica, estudando as dificuldades encontradas em seu ambiente de trabalho