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Analysis of the Progressive Collapse of Buildings underHigh Temperatures Using Successive ApproximationTechnique

Journal of Civil Engineering and Architecture 2020年第1期14卷 46-60页

作者： luciano lins vieira luciano Mendes Bezerra Ramon Saleno Yure Rubim Costa Silva Welington Vital da Silva Emanuella Guntzel Barbosa Valdeir Francisco de Paula Department of Civil Engineering University of BrasíliaBrasíliaDF-70910-900Brazil Department of Civil Engineering CEUBBrasíliaDF-70790-075Brazil Federal Institute of Education Science and Technology of GoiásGoianiaGO-74055-110Brazil

This paper presents an investigation of the disproportionate collapse of multi-store steel buildings in a natural fire situation due to the progressive failure of their *** this purpose,it is intended to evaluate the effects of the redistribution of stress and vertical displacements of columns with the evolution of the temperature addressing,also,the impacts of the localized faults of these structural *** addition,another objective of this paper is the development of a practical analysis approach,which is called by successive *** a methodology,advanced computational techniques were developed to predict the structural behavior of the building as the temperature reduces the strength and stiffness of its structural *** the parametric study,the overall response of the building was investigated through fire simulations in many *** results showed that the phenomenon of redistribution of stresses that occur during the heating period is essentially due to the reduction in the modulus of elasticity of the *** addition,the study pointed out that the use of advanced computational techniques through the use of successive approximations technique is an excellent alternative to study the progressive collapse of buildings subject to high temperatures.

关键词： Progressive collapse fire column.

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Healthcare Professionals’ Adherence to Contact Precautions at a Maternal and Child Teaching Hospital

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Open Journal of Nursing 2023年第12期13卷 839-854页

作者： Lucas Eduardo Luizão Marli de Carvalho Jericó Angela Silveira Gagliardo Calil Viviane Decicera Colombo Oliveira Alexandre lins Werneck Ingrid de Campos Truzzi Eliana Ofelia Lapa Rodriguez Maria Rita Rodrigues vieira Pedro Paulo de Carvalho Jericó Medical School in Sã o Jose do Rio Preto S&#227o Jose do Rio Preto Brazil Federal University of Sergipe Sergipe Brazil

Background: Healthcare-associated infections affect hundreds of millions of patients worldwide. Children have greater susceptibility to healthcare-associated infections due to the immaturity of their immune system. Contact precautions aim to promote safety, protection and prevention of contamination. Thus, the objective of this study was to verify adherence to contact precaution measures, as well as compliance to the use of personal protective equipment. Methods: This cross-sectional observational study was carried out from July to October 2019 using a checklist to evaluate health professionals’ adherence to hand hygiene procedures and the use of gloves and surgical gowns when assisting children on contact precautions. Results: A total of 941 observations were carried out in a total of 300.532 hours. Hand hygiene was performed before and after contact with the patient in 58.84% and 75.09% of the cases, respectively and a surgical gown was used in 86.40% of the cases. The use of gloves was the variable most adhered to by professionals (87.57%). Intensive care unit professionals were the care workers who most complied with the regulation regarding hand hygiene after contact with the patient (p = 0.009) and the use of the surgical gown (p < 0.001). The correct hand hygiene technique was the recommendation with least adherence. Non-compliance to the hand hygiene technique was statistically significant among intensive care unit professionals (p = 0.002). Conclusions: Adherence to hand hygiene before contact with the patient and compliance with the hand hygiene technique were neglected by most professionals. However, there was good adherence to the use of surgical gloves and gowns, as well as high compliance to the techniques of removing these items. .

关键词： Hospital Infection Universal Precautions Patient Safety Pediatric Nursing Isolation of Patients Microbial Drug Resistance

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Electroencephalographic Study of Gamma Rhythm in the Autobiographical Memory Evocation Mediated by Musical Stimuli

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World Journal of Neuroscience 2019年第3期9卷 199-207页

作者： Maria Clara Motta Barbosa Valente Matheus Simoes Oliveira Karlos Eduardo Alves Silva Berkmis Viana Santos Janise Dal Pai Reginaldo Melo Filho Fany Pereira de Araujo Soares Julia Maria Pacheco lins Kristiana Cerqueira Mousinho Milton vieira Costa Euclides Mauricio Trindade-Filho Neurosciences and Cognition Laboratory Universidade Estadual de Ciencias da Saúde de Alagoas(UNCISAL)MaceioALBrazil Centro Universitario CESMAC MaceioALBrazil Neurology and Neurosurgery Department Universidade Federal de Sao Paulo(UNIFESP)Sao PauloSPBrazil

Listening to music, or part of it, may stir the memory of a past moment, along with its associated emotions, such occurrences are known as autobiographical memories. Electroencephalographic (EEG) studies have shown alterations in memory recall and musical processing. However, no research was found showing a relation among music, autobiographical memories and associated emotions. The purpose of this study was to identify cortical areas involved in the evocation of autobiographical memory (associated with positive and negative events) mediated by musical stimuli. For that, gamma rhythm was analyzed through EEG recordings performed by 45 male volunteers while they were submitted to two stimuli: 1) the music capable of recalling memories associated to a positive event;2) the music capable of evoking memories associated to a negative event. Gamma band analysis was used in search of greater brain electrical activity. As results, researchers observed increased activity in right brain hemisphere during the musical processing, besides its hypoactivation when volunteers were submitted to musical stimuli related to memories of negative events.

关键词： Electroencephalogram Music Emotions Gamma Rhythm

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