Development of highly stable conductive multiwalled carbon nanotube ink using covalent and non-covalent functionalization for electrochemical sensors

The purpose of this work was the fabrication of a conductive carbon nanotube (CNT) ink. The proposed CNT ink remained remarkably stable over several months. The method includes combining the covalent and non-covalent functionalization, resulting in ink that exhibits excellent storage stability. The covalent functionalization was performed in the acid medium using H2SO4and HNO3, while the non-covalent functionalization used sodium dodecyl sulfate(SDS) and ultrasonication. The materials were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), electro-chemical impedance spectroscopy (EIS), and cyclic voltammetry (CV). FTIR and SEM confirmed that at the non-covalent functionalization, SDS was successfully adsorbed on the f-CNT surface, while at the covalent functionalization, the functional groups (-COOH, C=O and -OH) were inserted into the CNT surface. Voltammetry and EIS indicated that SDS in the presence of functional groups facilitates electron transferby improved electrical conductivity. The final product was a well-dispersed CNT ink with an average ohmic resistance of 18.62 kΩ. This indicates that CNT ink can be used in the fabrication of electrochemical sensors

Accessibility Evaluation of E-Government Mobile Applications in Brazil

AbstractThe provision of e-government services using mobile applications (known as m-government) has had a significant growth in recent years. However, it is very important that such applications be accessible to people with disabilities in order to ensure inclusive access. Using appropriate accessibility auditing methods is very important to help identify accessibility problems in interactive systems during their development. However, there has been little support in terms of formal standard accessibility guidelines to help develop and evaluate mobile applications. In this paper, we present a case study with the evaluation of four e-government mobile applications in Brazil using the Web Content Accessibility Guidelines (WCAG) 2.0. The paper discusses the methodological adaptations of WCAG 2.0 for the context of mobile applications and its current limitations. The results of the evaluations performed in the four applications in the case study showed that many elementary accessibility problems widely known by HCI researchers were encountered extensively in the applications evaluated. This highlights the importance of furthering research in accessibility design and evaluation of mobile applications, in order to provide more inclusive access to essential applications used by all citizens, such as e-government services

A responsabilidade civil do estado na reparação de danos causados em concursos públicos

Visando fazer uma análise jurídica, sob a perspectiva do Direito Administrativo acerca da responsabilidade civil do Estado nos casos em que há danos causados na elaboração de concursos públicos por partes das bancas examinadoras contratadas, este trabalho, através da análise de julgados prolatados pelas cortes brasileiras e pelas notícias veiculadas, tem por finalidade demonstrar a existência de danos, tanto de natureza patrimonial como extrapatrimonial aos candidatos a concursos e como a Administração Pública deve se responsabilizar. No primeiro capítulo será demonstrado casos concretos de danos ocorridos na elaboração de concursos por meio de precedentes; já em seguida serão abordados os critérios de contratação das bancas examinadoras e como tal questão influencia na responsabilidade do ente contratante. Por fim, tal discussão chega ao seu âmago, o qual é analisado a possibilidade de responsabilização subsidiária do ente público em razão da sua omissão no dever jurídico de cuidado em ralação a fiscalização e escolha da instituição realizadora do certame público.http://repositorio.uniceub.br/retrieve/33498/21327260.pd

Exclusive Breastfeeding After 40 Years of Age – Where Are We Going?

info:eu-repo/semantics/publishedVersio

POLITICS RE-SIGNIFICATION OF MINAS GERAIS’ SPACE IN MURILO MENDES AND GUINARD

O ARTIGO BUSCA COMPRENDER AS RELAÇÕES ARTÍSTICAS E POLÍTICAS ENTRE MURILO MENDES E GUIGNARD NA CONTEMPLAÇÃO DE OURO PRETO. AMBOS DESCONSTROEM A CIDADE EM SUA MONUMENTALIDADE INSTITUCIONAL, TORNANDO-A RUÍNA, PARA PODER REVISITÁ-LA POETICAMENTE. NESA RELAÇÃO ENTRE O ARTISTA, A SOCIEDADE E O ESTADO, A NEUTRALIDADE ESTÉTICA É DESQUALIFICADA, JÁ QUE AS ATIVIDADES DA ARTE E DA CRÍTICA LITERÁRIA FUNCIONAM POLITICAMENTE COMO UMA REVISÃO DOS CONCEITOS DE SENTIDO E DE VALOR.THE ARTICLE SEKS TO UNDERSTAND THE ARTISTIC AND POLITICAL RELATIONS BETWEEN MURILO MENDES AND GUIGNARD IN THE CONTEMPLATION OF OURO PRETO. BOTH DECONSTRUCT THE CITY IN ITS MONUMENTAL QUALITIES, TURNING IT INTO RUIN FOR THE SAKE OF BEING ABLE TO REVISIT THE HISTORICAL CITY POETICALLY. IN THIS RELATIONSHIP BETWEEN THE ARTIST, SOCIETY AND STATE, AESTHETIC NEUTRALITY IS DISQUALIFIED, CONSIDERING THAT THE ACTIVITIES OF ART AND LITERARY CRITICISM ACT POLITICALLY AS REVISIONS OF THE CONCEPTS OF MEANING AND VALUE

In Silico Approach For Characterization And Comparison Of Repeats In The Genomes Of Oil And Date Palms

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Transposable elements (TEs) are mobile genetic elements present in almost all eukaryotic genomes. Due to their typical patterns of repetition, discovery, and characterization, they demand analysis by various bioinformatics software. Probably, as a result of the need for a complex analysis, many genomes publicly available do not have these elements annotated yet. In this study, a de novo and homology-based identification of TEs and microsatellites was performed using genomic data from 3 palm species: Elaeis oleifera (American oil palm, v.1, Embrapa, unpublished; v.8, Malaysian Palm Oil Board [MPOB], public), Elaeis guineensis (African oil palm, v. 5, MPOB, public), and Phoenix dactylifera (date palm). The estimated total coverage of TEs was 50.96% (523 572 kb) and 42.31% (593 463 kb), 39.41% (605 015 kb), and 33.67% (187 361 kb), respectively. A total of 155 726 microsatellite loci were identified in the genomes of oil and date palms. This is the first detailed description of repeats in the genomes of oil and date palms. A relatively high diversity and abundance of TEs were found in the genomes, opening a range of further opportunities for applied research in these genera. The development of molecular markers (mainly simple sequence repeat), which may be immediately applied in breeding programs of those species to support the selection of superior genotypes and to enhance knowledge of the genetic structure of the breeding and natural populations, is the most notable opportunity.11JAFF by the Coordination for the Improvement of Higher Education Personnel (CAPES)Foundation within the Ministry of Education in Brazil via the Graduate Program in Plant Biotechnology, Federal University of Lavras (UFLA)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES

Boroxine benzaldehyde complex for pharmaceutical applications probed by electron interactions

The authors acknowledge Professor Pedro M. P. Gois for support and constructive discussions, from the iMed.ULisboa – Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, Universidade de Lisboa. M.M., A.N., R.R. and F.F.S. acknowledge the Portuguese National Funding Agency FCT‐MCTES through research grant PTDC/FIS‐AQM/31215/2017. L.C. acknowledges financial support from São Paulo Research Foundation (FAPESP), under grant N.2020/04822‐9. This work was also supported by Radiation Biology and Biophysics Doctoral Training Programme (RaBBiT, PD/00193/2012); UID/FIS/00068/2020 (CEFITEC). Publisher Copyright: © 2022 The Authors. Rapid Communications in Mass Spectrometry published by John Wiley & Sons Ltd.Rationale: 2,4,6-Tris(4-formylphenyl)boroxine (TFPB) is a substituted boroxine containing a benzaldehyde molecule bonded to each boron atom. Boroxine cages are an emerging class of functional nanostructures used in host–guest chemistry, and benzaldehyde is a potential radiosensitizer. Reactions initiated by low-energy electrons with such complexes may dictate and bring new fundamental knowledge for biomedical and pharmaceutical applications. Methods: The electron ionization properties of TFPB are investigated using a gas-phase electron–molecule crossed beam apparatus coupled with a reflectron time-of-flight mass spectrometer in an orthogonal geometry. Ionization and threshold energies are experimentally determined by mass spectra acquisition as a function of the electron energy. Results: The abundance of the molecular precursor cation in the mass spectrum at 70 eV is significantly lower than that of the most abundant fragment C7H5O+. Twenty-nine cationic fragments with relative intensities >2% are detected and identified. The appearance energies of six fragment cations are reported, and the experimental first ionization potential is found at (Formula presented.) eV. Moreover, eight double cations are identified. The present results are supported by quantum chemical calculations based on bound state techniques, electron ionization models and thermodynamic thresholds. Conclusions: According to these results, the TPFB properties may combine the potential radiosensitizer effect of benzaldehyde with the stability of the boroxine ring.publishersversionpublishe

Uso e Ocupação da Terra no Parque Nacional da Serra da Canastra: uma Análise a Partir da Regularização Fundiária

Este trabalho tem por objetivo apresentar um histórico do Parque Nacional da Serra da Canastra (PNSC), consonante com as disputas territoriais e o atual uso e ocupação da terra nessa área, principalmente em função da regularização fundiária dessa Unidade de Conservação desde 2010. A metodologia utilizada baseou-se em análise bibliográfica/documental, nas Geotecnologias (Sensoriamento Remoto e Geoprocessamento) e em trabalhos de campo, para a compreensão da cobertura e do uso da terra no PNSC (área regularizada e não regularizadas). Quanto aos resultados, essa pesquisa mostrou como é contraditório o atual cenário da regularização fundiária do PNSC; na linha espaço-temporal, constatam-se diferentes disputas territoriais em consequência da “contradição fundiária” histórica, que reflete diretamente na vida dos camponeses territorializados nessa área, em tese, não regularizada do Parque; e, em um segundo momento da pesquisa, é possível inferir que os camponeses que estão, sobretudo, na parte Sul do Parque, mantêm o uso da terra ancorado em um modelo de vida singular, respaldo por um manejo que permite os níveis de conservação dos recursos naturais atuais em condições similares ao Parque de 71 mil hectares. Todavia, dentre as contradições detectadas entre o ICMBio e as estratégias jurídicas para consolidação territorial dessa UC, constata-se uma nítida aliança entre conservação-mineração-agronegócio visando expropriar os camponeses para legitimar um Parque, cujas origens históricas já revelam a violência da conservação ambiental sem as pessoas.The aim of this work is to present an account of the Serra da Canastra National Park (SCNP), aligned with the territorial disputes and the current use and occupation of land in this area, mainly due to the land regularization of this Conservation Unit  since 2010. Methodology was based on bibliographical/documentary analysis, on Geotechnologies (Remote Sensing and Geoprocessing) and fieldwork for understanding land cover and land use in the SCNP (regulated and non-regulated area). This research showed how contradictory the current land scenario of Serra da Canastra National Park regulation is. In a spatio-temporal line, different territorial disputes are verified, as consequence of the historical "land contradiction", which reflects directly on peasants’ life territorialized in this not regularized area of the Park. In another moment of the research, it is possible to infer that the peasants, who are mainly in the South part of the Park, maintain a land use anchored in a singular model of life, supported by a management that allows the current levels of conservation of the natural resources, in similar conditions to the Park of 71 thousand hectares. However, among the contradictions detected between the ICMBio and the legal strategies for territorial consolidation of this CU, there is a clear alliance between conservation-mining-agribusiness to expropriate the peasants, aiming to legitimize a Park, whose historical origins already reveal the violence of environmental conservation without people

ANÁLISE DE SAC PARA EMPRESA DE BILHETERIA DIGITAL BASEADO EM ITIL ATRIBUÍDO AO GERENCIAMENTO DE DISPONIBILIDADE

Este trabalho descreve um projeto de implantação e desenvolvimento de processos para um serviço de atendimento ao consumidor (SAC). O intuito dessa infraestrutura é fazer que o cliente concentre sua atenção e forças no objetivo final de seu contrato que é prestar atendimento à usuários via central de atendimento, não se preocupando com problemas técnicos desperdiçando recursos humanos e financeiros com uma área secundária aos seus interesses. Esse projeto proporciona maiores ganhos no que se refere a recursos humanos especialistas, relatórios de desempenho de rede, métricas, comunicação entre departamentos e relatórios tecnológicos, fazendo com isso que o cliente obtenha mais lucro ao fazer as entregas exigidas contratualmente em suas métricas