Processo de obtenção de catalisador e de polimerização utilizando fluidos supercríticos e/ou fluidos a altas pressões e seu uso

Em 08/11/2016: Conhecimento do Parecer Técnico. Suspenso o andamento do pedido para que o depositante se manifeste, no prazo de 90 (noventa) dias desta data quanto ao contido no parecer técnico.Não concedidaA inovação ora proposta descreve um processo de obtenção de catalisador químico suportado em resina polimérica, com morfologia e distribuição de tamanhos controlados, utilizando fluidos supercríticos e/ou fluidos a altas pressões, seu uso na indústria de polimerização e na indústria química em geral

MAPPING OF BRAZILIAN RESEARCH ON LABORATORIES ASSOCIATED WITH MATHEMATICS: ANALYSIS OF 40 YEARS OF ACADEMIC PRODUCTION

Este artigo, resultado de uma investigação de doutorado, tem como finalidade apresentar um mapeamento das pesquisas acadêmicas (dissertações e teses) produzidas no Brasil, nos últimos 40 anos (1983 a 2022), que trazem laboratórios associados à Matemática como um dos seus focos principais. Como relato científico de uma pesquisa de característica inventariante, que busca desenhar um panorama, inicia por evidenciar brevemente fatos e textos historicamente demarcados no desenvolvimento da temática dos laboratórios. Em seguida, detalha metodologicamente a construção da Base de Dados da Pesquisa (Base), organizada em uma planilha, gerada a partir de dados coletados em 55 trabalhos, frutos de mestrados (acadêmico e profissional) e doutorados em programas de pós-graduação nas áreas de Educação, de Ensino e de Matemática. Dentre os principais resultados, destaca-se a constatação de que a produção científica sobre os laboratórios não tem sido uniforme, apesar de as discussões em torno da temática não serem recentes. Desde a primeira produção acadêmica, em 1983, há um lapso temporal de 14 anos para surgimento de novos trabalhos; mesmo assim, somente a partir de 2010 a produção começa a tomar corpo. Observa-se, ainda, que os trabalhos estão mais concentrados em apenas duas regiões brasileiras (Nordeste e Sudeste); que a área de Ensino detém a maior parte das pesquisas; e que os mestrados profissionais têm assumido um lugar de destaque nesta produção.This article, the result of a doctoral investigation, intends to present a mapping of academic research (dissertations and theses) produced in Brazil, in the last 40 years (1983 to 2022), which bring the laboratories associated with Mathematics as one of its main focuses. As a scientific report of an inventorying research, which seeks to draw a panorama, it begins by briefly highlighting facts and texts historically demarcated in the development of the subject of laboratories. It then details methodologically the construction of the Research Database (Base) organized in a spreadsheet generated from data collected from 55 works, results of master’s degrees (academic and professional) and doctorates in postgraduate programs in the areas of Education, Teaching and Mathematics. Among the main results, it is highlighted the finding that the scientific production on laboratories has not been uniform, although the discussions on the subject are not recent. Since the first academic production (1983), there is a time lapse of 14 years for emergence of new works; even so, only from 2010 the production begins to take shape. It is also observed that the works are more concentrated in just two Brazilian regions (Northeast and Southeast); the Teaching area holds most of the researches; professional master’s degrees have assumed a prominent place in this production

Analysis of the Variability in the Atmospheric Electric Field and Natural Gamma Radiation in Different Weather Conditions

In recent years the analysis of the variability of the natural gamma radiation and its relationshipwith high atmospheric electric fields in disturbed weather, e.g., thunderstorms, have been important, as well as the relationship between these parameters in fair weather conditions. In this paper we analyze the diurnal variation of the atmospheric electric field and natural gamma radiation, in fair and disturbed weather conditions, recorded in the Argentinian Andes mountain (2552 masl) between April 2018 and February 2019. In fair weather conditions, it was found a higher linear correlation coefficient (R) between the atmospheric electric field diurnal curve and the ‘universal’ Carnegie curve (R=0.93), and a high negative correlation between the atmospheric electric field and natural gamma radiation diurnal curve (R=-0.9). On the other hand, in disturbed weather conditions, we reported thirteen events where it was found intense natural gamma radiation enhancements associated with high atmospheric electric field variability. A maximum of 35 % excess in the natural gamma radiation was detected, which was associated with thunderstorms and rain precipitation. It was observed a high correlation between the excesses of the gamma natural radiation enhancement with the atmospheric electric field values (R=0.80) and with the rain precipitation rate (R=0.59).Fil: Rosa de Oliveira, Rafael Ricardo. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; BrasilFil: Tacza, José. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; Brasil. Polish Academy of Sciences; ArgentinaFil: Raulin, Jean Pierre. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; BrasilFil: Szpigel, Sergio. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; BrasilFil: Makhmutov, Vladimir. Lebedev Physical Institute; RusiaFil: Philippov, Maxim. Lebedev Physical Institute; RusiaFil: Ccopa, Josué. Universidade Presbiteriana Mackenzie. Escola de Engenharia. Centro de Radio Astronomia e Astrofisica; BrasilFil: Marun, Adolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Fernandez, German Enzo Leonel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico "El Leoncito". Universidad Nacional de Córdoba. Complejo Astronómico "El Leoncito". Universidad Nacional de la Plata. Complejo Astronómico "El Leoncito". Universidad Nacional de San Juan. Complejo Astronómico "El Leoncito"; Argentin

INACTIVATION KINETICS OF VIBRIO PARAHAEMOLYTICUS NATURALLY OCCURRING IN OYSTERS USING SUPERCRITICAL CARBON DIOXIDE TREATMENT

Abstract. Vibrio parahaemolyticus has been involved in a number of food borne outbreaks related to the consumption of raw oysters. As a direct consequence of filterfeeding in often contaminated water, oysters can be loaded with pathogenic microorganisms. The use of supercritical carbon dioxide (scCO 2 ) treatment has increased in importance as an innovative preservation method particularly due to the bactericidal effect of scCO 2 . This work aims at evaluating the kinetics of scCO 2 inactivation of Vibrio parahaemolyticus naturally occurring in raw oysters. For this purpose, raw material was exposed to scCO 2 (1:0.8 scCO 2 /product mass ratio) during 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, 5.0 and 6.0 hours, at 34 o C, submitted to processing pressures from 80 bar up to 200 bar, considering a pressurization and depressurization rate of 100bar/min. All the experiments were done in duplicate. Results showed that an increase in time processing enhanced Vibrio parahaemolyticus inactivation in oysters. Treatments at 0.25 and 0.5 hours induced a reduction of approximately 75% of the initial count of Vibrio parahaemolyticus. A greater bacteria inactivation level was observed starting from 1.5 hour of treatment. A complete reduction of the initial count of Vibrio parahaemolyticus was observed starting at 3.0 hours of treatment. Results obtained in this work confirm the scCO 2 capabilities in reducing the Vibrio parahaemolyticus load in oysters, which enhanced product safety and has the potential of increasing its shelf life

Septic arthritis of the knee: clinical and laboratory comparison of groups with different etiologies

OBJECTIVES: To clinically and epidemiologically characterize a population diagnosed with and treated for septic arthritis of the knee, to evaluate the treatment results and to analyze the differences between patients with positive and negative culture results, patients with Gram-positive and Gram-negative bacterial isolates and patients with S. aureus- and non-S. aureus-related infections. METHODS: One hundred and five patients with septic knee arthritis were included in this study. The clinical and epidemiological data were evaluated. Statistical analysis was performed to compare patients with and without an isolated causative agent, patients with Gram-positive and Gram-negative pathogens and patients with S. aureus-related and non S. aureus-related infections. RESULTS: Causative agents were isolated in 81 patients. Gram-positive bacteria were isolated in 65 patients and Gram-negative bacteria were isolated in 16 patients. The most commonly isolated bacterium was S. aureus. Comparing cases with an isolated pathogen to cases without an isolated pathogen, no differences between the studied variables were found except for the longer hospital stays of patients in whom an etiological agent was identified. When comparing Gram-positive bacteria with Gram-negative bacteria, patients with Gram-positive-related infections exhibited higher leukocyte counts. Patients with S. aureus-related infections were more frequently associated with healthcare-related environmental encounters. CONCLUSION: S. aureus is the most common pathogen of septic knee arthritis. Major differences were not observed between infections with isolated and non-isolated pathogens and between infections with Gram-positive and Gram-negative bacteria. S. aureus infections were more likely to be associated with a prior healthcare environment exposure

Perfil clínico e epidemiológico de pacientes idosos com doença de Chagas atendidos entre 2005-2013 por um serviço de atenção farmacêutica no estado do Ceará, nordeste do Brasil

Controlando-se a transmissão da doença de Chagas, surge o desafio de prestar assistência a milhões de pacientes infectados que chegam à velhice. Neste estudo, foram avaliados os registros socioeconômicos, demográficos e de comorbidades de todos os pacientes chagásicos idosos acompanhados no Serviço de Atenção Farmacêutica do Laboratório de Pesquisa em Doença de Chagas. As informações relacionadas à forma clínica da doença foram obtidas a partir de registros médicos disponibilizados pelo Hospital Universitário Walter Cantídio. O perfil da população estudada foi de: mulheres (50,5%); idade média de 67 anos; aposentados (54,6%); casados (51,6%); alta taxa de analfabetismo (40,2%); e renda familiar de um salário mínimo (51,5%). As formas clínicas predominantes da doença de Chagas foram a cardíaca (65,3%) e a indeterminada (14,7%). As principais alterações eletrocardiográficas foram o bloqueio de ramo direito (41,0%), associado ou não ao bloqueio ântero superior esquerdo (27,4%). O número médio de comorbidades por paciente foi de 2,23 ± 1,54, sendo a hipertensão arterial sistêmica a principal encontrada (67,0%). Verificou-se que os idosos constituem grupo vulnerável de pacientes que associam o envelhecimento com as alterações cardíacas e/ou digestivas resultantes da evolução da doença de Chagas e outras comorbidades, o que exige atenção especial dos serviços de saúde para um atendimento médico e social mais adequado.By controlling the transmission of Chagas disease, the challenge of providing assistance to millions of infected patients that reach old age arises. In this study, the socioeconomic, demographic and comorbidity records of all elderly chagasic patients followed at the Pharmaceutical Care Service of the Chagas Disease Research Laboratory were assessed. The information related to the clinical form of the disease was obtained from medical records provided by the Walter Cantídio University Hospital. The profile of the studied population was: women (50.5%); mean age of 67 years; retired (54.6%); married (51.6 %); high illiteracy rate (40.2%); and family income equal to the minimum wage (51.5%). The predominant clinical forms of Chagas disease were cardiac (65.3%) and indeterminate (14.7%). The main electrocardiographic changes were the right bundle branch block (41.0%), associated or not with the anterosuperior left bundle branch block (27.4%). The average number of comorbidities per patient was 2.23 ± 1.54, with systemic arterial hypertension being the main one found (67.0%). It was found that the elderly comprise a vulnerable group of patients that associate aging with cardiac and/or digestive disorders resulting from the evolution of Chagas disease and other comorbidities, which requires special attention from health services to ensure more appropriate medical and social care