Investigação sobre quebra estrutural na função de reação do BACEN após mudança na sua gestão em 2011

O presente trabalho buscou alcançar evidências empíricas de que houve mudanças de regime na definição da taxa básica de juros no Brasil, após a saída de Henrique Meirelles da presidência do Banco Central do Brasil e a posse do atual presidente da instituição, Alexandre Tombini em janeiro de 2011. O estudo se baseou na regra de Taylor, que foi estimada para o caso brasileiro, considerando a taxa de câmbio como um dos fatores observados pelos tomadores de decisão da taxa SELIC. Concluiu-se que não houve uma quebra estrutural na função de reação e que, portanto, não houve comprovação empírica de que a autoridade monetária não estava atuando de maneira estritamente técnica na maneira de conduzir a Política Monetária

AI based monitoring violent action detection data for in-vehicle scenarios

With the evolution of technology associated with mobility and autonomy, Shared Autonomous Vehicles will be a reality. To ensure passenger safety, there is a need to create a monitoring system inside the vehicle capable of recognizing human actions. We introduce two datasets to train human action recognition inside the vehicle, focusing on violence detection. The InCar dataset tackles violent actions for in-car background which give us more realistic data. The InVicon dataset although doesn't have the realistic background as the InCar dataset can provide skeleton (3D body joints) data. This datasets were recorded with RGB, Depth, Ther-mal, Event-based, and Skeleton data. The resulting dataset contains 6 400 video samples and more than 3 million frames, collected from sixteen distinct subjects. The dataset contains 58 action classes, including violent and neutral (i.e., non-violent) activities.(c) 2022 Published by Elsevier Inc. This is an open access article under the CC BY license ( http://creativecommons.org/licenses/by/4.0/ )This work has been supported by FCT-Fundacao para a Ciencia e Tecnologia within the R & D Units Project Scope: UIDB/00319/2020. This work was partly financed by European social funds through the Portugal 2020 program and by national funds through FCT-Foundation for Science and Technology within the scope of projects POCH-02-5369-FSE-000006. The author would also like to acknowledge FCT for the attributed Doctoral grant PD/BDE/150500/2019

DEVELOPMENT AND VALIDATION OF TECHNOLOGY FOR TEACHING BASIC LIFE SUPPORT IN CARDIO-RESPIRATORY ARREST

Objective: to develop and validate a multimedia application on a mobile platform for teaching basic support in cardiac arrest to undergraduate health care students.Method: methodological study conducted in two stages: development of the application and content validation by experts. The application was developed based on Contextualized Instructional Design, following the stages of analysis, design, development, and implementation. For the content validation, 11 experts evaluated the application regarding relevance, clarity, coherence, information, presentation, navigability, accessibility, and design.Results: The SBVida application was developed for mobile devices on the Android platform. An overall Content Validity Index of 0.87 was achieved.Conclusion: The SBVida application was developed and validated and can contribute to the preparation and further training of students and professionals from Nursing and other health fields

Colecistectomias videolaparoscópicas : experiência inicial em um hospital universitário

O presente trabalho tem por objetivo analisar a experiência inicial de um hospital universitário em colecistectomia videolaparoscópica. No período de agosto de 1992 a junho de 1993, 219 pacientes foram operados no Hospital de Clínicas de Porto Alegre, sendo 171 mulheres (78%). A média de idade foi 47,4 anos. Trinta e três casos (15%) eram obesos. Colecistite aguda foi o diagnóstico pré-operatório em 15 pacientes (7%). O tempo operatório médio (94,6 minutos) foi prolongado na presença de colecistite aguda (114 versus 92 min; p<0,02). Houve 6 casos de conversão para cirurgia clássica (2,7%). Os pacientes obesos apresentaram uma maior freqüência de conversões (9% versus 1,6%; p<0,05). Complicações pósoperatórias foram observadas em 23 casos (10,5%), sendo que dois exigiram laparotomia (hemorragia e perfuração intestinal). Os pacientes com mais de 65 anos de idade apresentaram um maior índice de complicações pós-operatórias (22% versus 8,5%; p<0,05). A mortalidade foi nula. O tempo médio de permanência hospitalar total (74,2 horas) foi maior nos pacientes com colecistite aguda (96 versus 72 horas; p<0,03). Esses dados iniciais demonstram que a colecistectomia videolaparoscópica vem sendo efetuada em nosso meio com resultados comparáveis aos apresentados na literatura.The present study aims to analyse the initial experience with videolaparoscopic cholecystectomy in an university hospital. Between August 1992 and June 1993, 219 patients were operated on at the Hospital de Clínicas de Porto Alegre, of which 171 (78%) were women. Mean age was 47,4 years. Thirty-three patients (15%) were obese. Acute cholecystitis was the preoperative diagnosis in 15 patients (7%). Mean operative time (94,6 minutes) was increased in patients with acute cholecystitis (114 versus 92 minutes; p<0,02). There were 6 conversions to open cholecystectomy (2,7%). Conversion was more likely in obese patients (9% versus 1,6%; p<0,05). Postoperative complications were present in 23 cases (10,5 %), two of them required laparotomy (hemorrhage and bowel injury). Patients older than 65 years of age showed a greater complication rate (22% versus 8,5%; p<0,05). There were no deaths. The median length of hospitalization (74,2 hours) was longer in patients with acute cholecystitis (96 versus 72 hours; p<0,03). These initial data demonstrate that videolaparoscopic cholecystectomy has been performed at our institution with results comparable to those of literature

Glyceolin and phaseolin induction in soybean and beans as a function of biocontrol agents application

Induction of plant resistance is a tool that can be incorporated into the integrated management of diseases of cultivated plants. In this way, this work aims to evaluate the elicitor action of biocontrol agents in the induction of glyceolin. In this study were used concentrations about 0; 0.5; 1; 1.5 and 2% diluted in water; spore suspension of Trichoderma asperellum BV10, Bacillus subtilis BV02 and Bacillus amyloliquefaciens BV03 microorganisms. To determine the glyceolin, cotyledons were grown in sand, weighed and cut in longitudinal section on the lower surface. Subsequently, these were deposited 50 μL of the concentrations in the cuts and the extraction performed in H2O and concentration determined by absorbance at wavelength 285nm. The results were submitted to analysis of variance and compared by the regression test (p <0.05). When measuring the glyceolin in soybean cotyledons, there was an increase in the accumulation of this phytoalexins as the concentration of B. subtilis BV02 cells increased. The 4% concentration of B. subtilis BV02 promoted 237% more glyceolin accumulation in soybean cotyledons than the control. The accumulation of glyceolin was increased as the concentration of T. asperellum BV10 cells increased, so that 4% concentration promoted 228% more glycerol accumulation than the control. Increasing the concentration of Bacillus amyloliquefaciens BV03 cells increased the accumulation of this phytoalexins. The 4% concentration promoted 129% more accumulation of glycerol in soybean cotyledons than the control. The microorganisms T. asperellum, B. subtilis and B. amyloliquefaciens are indicated as activators of resistance mechanisms of soybean plants

DESENVOLVIMENTO E VALIDAÇÃO DE TECNOLOGIA PARA ENSINO DE SUPORTE BÁSICO DE VIDA NA PARADA CARDIORRESPIRATÓRIA

Objetivo: desenvolver e validar um aplicativo multimídia em plataforma móvel para o ensino de suporte básico na parada cardiorrespiratória para estudantes de graduação da área de saúde.Método: estudo metodológico conduzido em duas etapas: desenvolvimento do aplicativo e validação de conteúdo por especialistas. O aplicativo foi desenvolvido a partir do Design Instrucional Contextualizado, seguindo as etapas de análise, desenho (design), desenvolvimento e implementação. Para a validação de conteúdo, 11 especialistas avaliaram o aplicativo quanto à relevância, à clareza, à coerência, às informações, à apresentação, à navegabilidade, à acessibilidade e ao design.Resultados: o aplicativo SBVida foi desenvolvido para dispositivos móveis em plataforma Android. Foi alcançado Índice de Validade de Conteúdo geral de 0,87.Conclusão: o aplicativo SBVida foi desenvolvido e validado e pode contribuir para a preparação e a capacitação complementar a estudantes e profissionais de Enfermagem e de demais áreas da saúd

DESARROLLO Y VALIDACIÓN DE TECNOLOGÍA PARA LA ENSEÑANZA DEL SOPORTE VITAL BÁSICO EN LA PARADA CARDÍACA

Objetivo: desarrollar y validar una aplicación multimedia en una plataforma móvil para la enseñanza del soporte básico en la parada cardíaca a estudiantes de pregrado de salud.Método: estudio metodológico realizado en dos etapas: desarrollo de la aplicación y validación del contenido por expertos. La aplicación se ha desarrollado basándose en el Design Instruccional Contextualizado, siguiendo las etapas de análisis, diseño, desarrollo e implementación. Para la validación del contenido, 11 expertos evaluaron la aplicación en cuanto a relevancia, claridad, coherencia, información, presentación, navegabilidad, accesibilidad y diseño.Resultados: La aplicación SBVida fue desarrollada para dispositivos móviles en la plataforma Android. Se obtuvo un Índice de Validez de Contenido global de 0,87.Conclusión: la aplicación SBVida fue desarrollada y validada y puede contribuir a la preparación y perfeccionamiento de estudiantes y profesionales de Enfermería y otras áreas de la salud

Respirometry and Ruminant Nutrition

The gaseous exchange between an organism and the environment is measured by respirometry or indirect calorimetry. Once the oxygen consumption (O2) and the production of carbon dioxide (CO2) and methane (CH4) are known, the energy losses by gas and heat can be calculated. Energy metabolism and methane production have been studied in the Calorimetry and Metabolism Laboratory of the Federal University of Minas Gerais, located in Belo Horizonte, Minas Gerais, Brazil. Animals used are mainly Zebu cattle and their crossbreeds that represent most beef and dairy cattle breed grazed on tropical pastures. System calibration and routine work are addressed in this text. The results obtained on respirometric chambers are expressed in net energy (NE), which can be net energy for maintenance (NEm), lactation (NEL), weight gain (NEg), and pregnancy (NEp). NE is, in fact, what is used by the animal for maintenance and each productive function. The values of k (conversion efficiency of ME into NE) for maintenance (km), milk (kL), weight gain or growth (kg), and pregnancy (kp) are determined. Thanks to the peculiarity of the respirometric technique, the same animal can be evaluated several times, in different physiological states and planes of nutrition

Chitinase and beta-1,3-glucanase activities after the elicitation of tomato defenses against bacterial spot

O objetivo deste trabalho foi avaliar a influência de eliciadores biológicos e químicos sobre as atividades de duas proteínas relacionadas à patogênese (PR), quitinase e beta-1,3-glucanase, em folhas de tomateiro, e avaliar o potencial desses eliciadores na redução do progresso da mancha-foliar causada por Xanthomonas campestris pv. vesicatoria. Plantas de tomateiro da cultivar Santa Cruz Kada foram pulverizadas com: acibenzolar-S-metil (ASM; 0,2 g  L-1); formulação biológica proveniente de biomassa cítrica, denominada Ecolife (5 mL L-1); suspensão de quitosana (MCp; 200 g L-1 ), proveniente de micélio de Crinipellis perniciosa; extrato aquoso de ramos de lobeira (Solanum lycocarpum) infectados por C. perniciosa (VLA; 300 g L-1 ). As plantas foram desafiadas com um isolado virulento da bactéria, quatro dias depois das pulverizações. Plantas pulverizadas com extratos biológicos mostraram redução da mancha-bacteriana. ASM proporcionou 49,3% de proteção, e foi igual à MCp e Ecolife e superior ao VLA. Este último não diferiu significativamente de MCp e Ecolife. Observou-se maior atividade das duas enzimas nas plantas tratadas, principalmente nas primeiras horas após as pulverizações.The objective of this work was to assess the influence of foliar application of resistance inducers and the activation of plant pathogenesis-related (PR) proteins, chitinases and beta-1,3-glucanases, against Xanthomonas campestris pv. vesicatoria, and evaluate the potential of these elicitors on the reduction of bacterial leaf spot. Tomato plants of the cultivar Santa Cruz Kada were sprayed with: acibenzolar-S-methyl (0.2 g L-1 ASM); Ecolife, a biological formulation based on citric biomass (5 mL L-1); chitosan suspension from Crinipellis perniciosa mycelium (MCp; 200 g L-1); an aqueous extract from branches of lobeira (Solanum lycocarpum) infected with C. perniciosa (VLA; 300 g L-1). Plants were challenged with a virulent bacterial strain four days after spraying. Plants sprayed with the tested substances showed reduction of bacterial spot. ASM provided 49.3% protection, and was equal to MCp and Ecolife, and superior to VLA. VLA treatment did not differ statistically from MCp and Ecolife. Increases of beta-1,3-glucanase and chitinase activities were observed in treated plants at the first hour after spraying