Estimular o Aprendizado para Exame Nacional do Ensino Médio Utilizando o Sistema Tutor Inteligente MAZK

TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Tecnologias e Saúde. Tecnologias da Informação e ComunicaçãoA tecnologia avança continuamente e cresce no âmbito de ser usada como ferramenta educacional. Este trabalho tem como objetivo estimular o aprendizado para o Exame Nacional do Ensino Médio por meio do tutor inteligente MAZK que foi usado como ferramenta de aplicação. O trabalho está fundamento em aspectos como as principais dificuldades na utilização dessas tecnologias a favor da educação por parte dos estudantes, professores e alunos; que as tecnologias digitais aplicadas de forma planejada atraem os estudantes e auxiliam os professores; que o sistema tutores inteligente são aliados da educação e do aluno por oferecer um ensino-aprendizagem personalizado; a partir disso, foi realizada uma competição entre escolas públicas dividida em duas fases que envolveram escola, professor e alunos

Electroreduction of O_2 to H_2O at Unusually Positive Potentials Catalyzed by the Simplest of the Cobalt Porphyrins

Simple cobalt porphine, adsorbed on graphite electrodes, catalyzes the direct reduction of O_2 to H_2O, while most other monomeric cobalt porphyrins do not. The surprising behavior of cobalt porphine suggests possible new strategies for the design of electrocatalysts for the reduction of O_2 to H_2O using structurally similar but more oxidation-resistant analogs

Electroreduction of O_2 to H_2O at Unusually Positive Potentials Catalyzed by the Simplest of the Cobalt Porphyrins

Simple cobalt porphine, adsorbed on graphite electrodes, catalyzes the direct reduction of O_2 to H_2O, while most other monomeric cobalt porphyrins do not. The surprising behavior of cobalt porphine suggests possible new strategies for the design of electrocatalysts for the reduction of O_2 to H_2O using structurally similar but more oxidation-resistant analogs

Insomnia in Patients Seeking Care at an Orofacial Pain Unit

Introduction: Orofacial pain and dysfunction include a broad range of disturbances among which pain and insomnia are some of the most common complaints. Sleep strengthens physiological and psychological resilience and is an absolute requirement for health. Insomnia is a common symptom or sleep disorder, yet data on its prevalence is sparse. Here we extracted data from the insomnia severity index which was part of the web-based interdisciplinary symptom evaluation (WISE) tool given to a large sample of patients seeking care at an orofacial pain unit for analyzing insomnia prevalence in this clinical population.Material and methods: Anonymized data were available from 952 patients who consulted the Orofacial Pain Unit at the Center of Dental Medicine, University of Zurich, Zurich, Switzerland between January 2017 and December 2018. Prevalence data for insomnia stratified by gender and 10 age groups (decades) were calculated. The distribution of four insomnia severity grades was determined, also stratified by age and gender.Results: 952 patients (290 men: 30.5%) with a mean age of 44.8 ± 17.4 years completed a WISE. Three hundred and fifty-two (37.0%) patients with a mean age of 45.8 ± 16.7 years positively responded to a screening question for insomnia and/or hypersomnia. Insomnia was severe in women from the 2nd to 8th decade, ranging from 4.3% (3rd decade) to 14.5% (6th decade), and moderately severe from the 2nd to 9th decade, ranging from 18.8% (6th decade) to 27.8% (2nd decade). In men, severe insomnia was present from the 3rd to 7th decade, ranging from 2.3% (7th decade) to 4.4% (4th decade) and moderately severe insomnia from the 3rd to 7th decade, ranging from 4.6% (7th decade) to 12.2% (5th decade).Conclusions: This is the first study reporting on insomnia in a large sample of patients seeking care at an orofacial pain unit. One in three patients reported some form of sleep disturbances, which for almost half of them was moderate to severe insomnia. The gender ratio was almost equal throughout adulthood, yet younger and older women were more frequently affected and experienced higher insomnia severity than men

PTX3 Polymorphisms and Invasive Mold Infections After Solid Organ Transplant

Donor PTX3 polymorphisms were shown to influence the risk of invasive aspergillosis among hematopoietic stem cell transplant recipients. Here, we show that PTX3 polymorphisms are independent risk factors for invasive mold infections among 1101 solid organ transplant recipients, thereby strengthening their role in mold infection pathogenesis and patients' risk stratificatio

[5,10,15,20-Tetrakis(4-((pentaammineruthenio)- cyano)phenyl)porphyrinato]cobalt(II) Immobilized on Graphite Electrodes Catalyzes the Electroreduction of O_2 to H_2O, but the Corresponding 4-Cyano-2,6-dimethylphenyl Derivative Catalyzes the Reduction Only to H_2O_2

Cobalt porphyrins in which Ru(NH_3)_5^(2+) groups are coordinated to four cyanophenyl ligands pendant to the porphyrin ring act as catalysts for the electroreduction of O_2 when adsorbed on the surface of graphite electrodes. The parent 4-cyanophenyl derivative catalyzes the four-electron reduction of O_2 to H_2O, but the 4-cyano-2,6-dimethylphenyl derivative catalyzes only the two-electron reduction of O_2 to H_2O_2

Examination of Cobalt “Picket Fence” Porphyrin and Its Complex with 1-Methylimidazole as Catalysts for the Electroreduction of Dioxygen

The electrochemical behavior of cobalt 5,10,15,20-tetrakis(α,α,α,α-2-pivalamidophenyl)porphyrin (Co^(II)TpivPP) was examined in benzonitrile solutions. The electrochemical responses were changed significantly by the addition of 1-methylimidazole which coordinates once to the Co(II) and twice to the Co(III) porphyrin. The corresponding equilibrium binding constants were estimated as 2.9 × 10^3 M^(-1) and 1.7 × 10^(20) M^(-2). The cyclic voltammetric responses were affected by the rates of the ligand association/dissociation reactions. Formation of the O_2 adduct of the Co(II) porphyrin resulted in only small changes in the cyclic voltammetric pattern. Comparison between Co^(II)TpivPP and cobalt tetraphenylporphyrin (Co^(II)TPP) as catalysts for the electroreduction of O_2 showed the latter to be the superior catalyst both when adsorbed on graphite electrodes and when dissolved in thin layers of acidified benzonitrile where Co^(II)TpivPP exhibited unimpressive catalytic activity compared with Co^(II)TPP, which appeared to catalyze the reduction of O_2 by significantly more than 2 electrons per molecule