Uso de hidroponia em cereais de inverno.

bitstream/CNPT-2010/40688/1/p-do70.pd

Cardiac and arrhythmic complications in patients with COVID-19

In December 2019, the world started to face a new pandemic situation, the severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2). Although coronavirus disease (COVID-19) clinical manifestations are mainly respiratory, major cardiac complications are being reported. Cardiac manifestations etiology seems to be multifactorial, comprising direct viral myocardial damage, hypoxia, hypotension, enhanced inflammatory status, ACE2-receptors downregulation, drug toxicity, endogenous catecholamine adrenergic status, among others. Studies evaluating patients with COVID-19 presenting cardiac injury markers show that it is associated with poorer outcomes, and arrhythmic events are not uncommon. Besides, drugs currently used to treat the COVID-19 are known to prolong the QT interval and can have a proarrhythmic propensity. This review focus on COVID-19 cardiac and arrhythmic manifestations and, in parallel, makes an appraisal of other virus epidemics as SARS-CoV, Middle East respiratory syndrome coronavirus, and H1N1 influenza

Alternative Position Estimation Systems for Micro Air Vehicles

Micro air vehicles (MAVs) is a technology that is becoming more and more important and popular nowadays. It is used as a tool to deal with different tasks that were not possible in the past. For most MAV models, the GPS sensor is the only way of estimating its pose in the environment. However, besides the fact of not having a secondary position estimation system besides the GPS, this is also risky because the GPS may fail like any other sensor. To overcome this weakness and make the MAVs more robust to autonomous tasks, the research community proposed many different localization systems for different constraints. In this chapter, the most popular, recent, and important MAV localization systems are reviewed, as well as the promising future works in this field

Sistema operacional em tempo real Freertos: an?lise dos componentes de timers, interrup??es e gerenciamento de recursos na plataforma de hardware minimalista Arduino Uno

This monography presents an analysis about the FreeRTOS source code portable to Arduino Uno. His objective is to give a more accurate and clear vision of his behaviour, besides the quantity of memory usage that his structures uses. This monography analyze the description of the book about the creating functions and management of mutexes, binary and counting semaphores, timers and funcions called inside an interruption. At last, brings as result how they actually behave and how much memory each used structure occupy through an analysis of the respective source codes.O presente trabalho apresenta uma an?lise do c?digo fonte do FreeRTOS portado para Arduino Uno. O objetivo dele ? dar uma vis?o mais clara do seu comportamento, al?m da quantidade de mem?ria que suas estruturas ocupam. Esse trabalho analisa a descri??o do livro das fun??es de cria??o e manejo de mutexes, sem?foros bin?rios, sem?foros contadores, timers e fun??es em caso de uma chamada em uma interrup??o. Por ?m, traz como resultado o modo como elas se comportam realmente e quanto de mem?ria cada estrutura usada ocupa atrav?s da an?lise de seus respectivos c?digos fonte

Bioinspiring Chondrosia reniformis (Nardo, 1847) collagen-based hydrogel: a new extraction method to obtain a sticky and self-healing collagenous material

Collagen is a natural and abundant polymer that serves multiple functions in both invertebrates and vertebrates. As collagen is the natural scaffolding for cells, collagen-based hydrogels are regarded as ideal materials for tissue engineering applications since they can mimic the natural cellular microenvironment. Chondrosia reniformis is a marine demosponge particularly rich in collagen, characterized by the presence of labile interfibrillar crosslinks similarly to those described in the mutable collagenous tissues (MCTs) of echinoderms. As a result single fibrils can be isolated using calcium-chelating and disulphide-reducing chemicals. In the present work we firstly describe a new extraction method that directly produces a highly hydrated hydrogel with interesting self-healing properties. The materials obtained were then biochemically and rheologically characterized. Our investigation has shown that the developed extraction procedure is able to extract collagen as well as other proteins and Glycosaminoglycans (GAG)-like molecules that give the collagenous hydrogel interesting and new rheological properties when compared to other described collagenous materials. The present work motivates further in-depth investigations towards the development of a new class of injectable collagenous hydrogels with tailored specifications.The authors gratefully acknowledge the financial support from the European Union Seventh Framework Programme (FP7/2007–2013) under grant agreement ERC-2012-ADG 20120216-321266 (ERC Advanced Grant project ComplexiTE), as well as from the European Regional Development Fund (ERDF) under the projects “Accelerating tissue engineering and personalized medicine discoveries by the integration of key enabling nanotechonologies, marine-derived biomaterials and stem cells” (NORTE-01-0145-FEDER-000021), supported by Norte Portugal Regional Operational Program (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, and 0687_NOVOMAR_1_P, co-financed by transborder cooperation programme POCTEP. The authors are also thankful to the Area Marina Protetta Portofino (Italy) for permission to collect sponge specimens and to Daniela Candia (University of Milan, Italy) and Marco Giovine (University of Genoa, Italy) for the logistical support on the sponge sampling and immediate processing. We are grateful to the two anonymous referees for improving the quality of the present article.info:eu-repo/semantics/publishedVersio

Riscos à segurança do paciente em unidade de internação hospitalar: concepções da equipe de enfermagem

Objective: checking the nursing staff’s conception of possible risks for the patient safety in a clinic hospitalization unit, and knowing strategies used to manage risks. Method: a descriptive study with qualitative approach. Fourteen subjects, including nurses and nursing experts working in clinic hospitalization unit, were interviewed. It was conducted a content assessment. Results: workers identify risks and report mistakes according to the service routine and in a computerized way for the significant family. There is concern about legal and ethical aspects in case of injuring the patient. Excessive working hours and lack of workers were also mentioned as patient safety risks. Conclusions: risk management is a complex work that includes different aspects of the working practice and significant for improving nursing assistance. It is a subject to be addressed in permanent educationObjetivo: identificar qué cree el equipo de enfermería sobre los riesgos posibles a la seguridad de pacientes ingresados en unidad clínica, además de conocer las estrategias usadas para evitarlos. Método: investigación descriptiva con abordaje cualitativo. Fueron entrevistados 14 sujetos, enfermeros y técnicos de enfermería, que trabajan en unidades de ingreso clínico. Se realizó el Análisis de Contenido. Resultados: profesionales identifican los riesgos y notifican los errores de acuerdo con la rutina; el registro es informatizado e impreso, y la familia es comunicada; hay preocupación con aspectos éticos y legales si pacientes sufren daño; actividad laboral en exceso y falta de mano de obra se registran como riesgos. Conclusiones: la administración de riesgos es una actividad compleja en la cual están involucrados distintos aspectos de la práctica profesional, que son muy importantes para darle calificación a la asistencia en enfermería. Es un tema abordado a través de la educación permanente.Objetivo: identificar a concepção da equipe de enfermagem sobre os possíveis riscos à segurança do paciente internado em unidade clínica, bem como conhecer as estratégias empregadas para controlar os riscos. Método: pesquisa descritiva com abordagem qualitativa. Foram entrevistados 14 sujeitos, entre enfermeiros e técnicos de enfermagem, que atuam em unidades de internação clínica. Foi realizada Análise de Conteúdo. Resultados: os profissionais identificam os riscos e notificam os erros de acordo com a rotina do serviço, o registro é informatizado e impresso e a família comunicada; há preocupação com os aspectos éticos e legais no caso de haver dano ao paciente; a carga de trabalho excessiva e o dimensionamento de pessoal insuficiente foram mencionados como riscos aos pacientes. Conclusões: o gerenciamento de riscos é trabalho complexo, que incorpora diferentes aspectos inerentes à prática profissional, mas relevantes para qualificar a assistência de enfermagem. É tema a ser abordado através da educação permanente

Satisfação no trabalho e interfaces com a comunicação na liderança

O presente estudo objetivou analisar de que forma se dá a comunicação da liderança e a satisfação do trabalho. A amostra do tipo não probabilística, se constituiu de 125 trabalhadores que responderam um questionário disponibilizado de forma online composto por quatro blocos: questionário sociodemográfico e laboral, Inventário de satisfação com a comunicação interpessoal, questionário de competência comunicativa e Escala de satisfação no trabalho. Os resultados obtidos por meio da análise de regressão linear múltipla apontaram um modelo explicativo composto por três dimensões. A dimensão Satisfação com as relações hierárquicas foi constituída por três variáveis, que conjuntamente, explicaram 48% da variância. A dimensão Satisfação com o Ambiente físico do trabalho foi constituída por duas variáveis, que explicaram 17,1%. Já a dimensão Satisfação Intrínseca no trabalho foi constituída por três variáveis, que juntas explicaram 42,5% da variância. Estes resultados sugerem ações para as organizações e gestores, no sentido de viabilizar diretrizes de comunicação da liderança efetivas e assertivas