Notes on a cooperative research with teachers from peasant, quilombolas and indigenous communities

O presente ensaio discute os dois eixos centrais de investigação desenvolvida no âmbito do curso Escola da Terra, em uma universidade federal, localizada no estado do Rio Grande do Sul. O primeiro eixo é sustentado em Nóvoa e Niza,e envolve a formação de um grupo interdisciplinar, assumindo a lógica inerente ao estabelecimento e consolidação de uma comunidade de prática.O segundo ésustentado teoricamente em Piaget, e envolve pesquisa em sala de aula.Por meio da articulação desses eixos, defendemos a possibilidade de construirmos modelos alternativos de processos de formação continuada de professores, o que pode dar visibilidade e fortalecer as especificidades da cultura profissional dos professores, e consequentemente potencializar seus processos formativos.This essay discusses the two main axés of investigation developed within the scope of the Escola da Terra project, a program offered by a Brazilian federal university located in the state of Rio Grande do Sul. The first axis is grounded in the work of Nóvoa and Niza, and involves the formation of na interdisciplinary group, which incorporates the inherent logic needed to the establishment and consolidation of a community of practice. The secondis theoretically grounded in the work of Piaget, and involves research in the classroom. By articulating these axes, we argue for the possibility of building alternative models of in-service teacher education projects that give visibility and strengthen the specificities of teachers' professional culture, therefore enhancing their continuing education

Professor-propositor: a curadoria como estratégia para a docência on-line

Frente à constante transformação do cenário tecnológico, ao invés da formação focada no uso aplicado e restrito das tecnologias digitais, é preciso criar e disseminar metodologias que se articulem aos saberes e práticas próprias da docência, articulando proposições teóricas e epistemológicas que não sigam o ritmo de obsolescência imposto pelo mercado tecnológico. O presente ensaio teórico visa apresentar e constituir uma discussão em torno da ideia de curadoria como um conceito e uma estratégia para a docência on-line no sentido de favorecer práticas de ensino e de aprendizagem a favor da autoria docente e da socialização dos saberes. Numa perspectiva teórico-metodológica, consideramos a comunicação, a mobilidade, o hibridismo tecnológico e a liberação do polo da emissão como elementos chave que podem sustentar a curadoria como prática de socialização e mediação de saberes, carregando de potência as experiências de aprendizagem no contexto da educação on-line

Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection

Mitochondrial physiology

As the knowledge base and importance of mitochondrial physiology to evolution, health and disease expands, the necessity for harmonizing the terminology concerning mitochondrial respiratory states and rates has become increasingly apparent. The chemiosmotic theory establishes the mechanism of energy transformation and coupling in oxidative phosphorylation. The unifying concept of the protonmotive force provides the framework for developing a consistent theoretical foundation of mitochondrial physiology and bioenergetics. We follow the latest SI guidelines and those of the International Union of Pure and Applied Chemistry (IUPAC) on terminology in physical chemistry, extended by considerations of open systems and thermodynamics of irreversible processes. The concept-driven constructive terminology incorporates the meaning of each quantity and aligns concepts and symbols with the nomenclature of classical bioenergetics. We endeavour to provide a balanced view of mitochondrial respiratory control and a critical discussion on reporting data of mitochondrial respiration in terms of metabolic flows and fluxes. Uniform standards for evaluation of respiratory states and rates will ultimately contribute to reproducibility between laboratories and thus support the development of data repositories of mitochondrial respiratory function in species, tissues, and cells. Clarity of concept and consistency of nomenclature facilitate effective transdisciplinary communication, education, and ultimately further discovery

Mitochondrial physiology

As the knowledge base and importance of mitochondrial physiology to evolution, health and disease expands, the necessity for harmonizing the terminology concerning mitochondrial respiratory states and rates has become increasingly apparent. The chemiosmotic theory establishes the mechanism of energy transformation and coupling in oxidative phosphorylation. The unifying concept of the protonmotive force provides the framework for developing a consistent theoretical foundation of mitochondrial physiology and bioenergetics. We follow the latest SI guidelines and those of the International Union of Pure and Applied Chemistry (IUPAC) on terminology in physical chemistry, extended by considerations of open systems and thermodynamics of irreversible processes. The concept-driven constructive terminology incorporates the meaning of each quantity and aligns concepts and symbols with the nomenclature of classical bioenergetics. We endeavour to provide a balanced view of mitochondrial respiratory control and a critical discussion on reporting data of mitochondrial respiration in terms of metabolic flows and fluxes. Uniform standards for evaluation of respiratory states and rates will ultimately contribute to reproducibility between laboratories and thus support the development of data repositories of mitochondrial respiratory function in species, tissues, and cells. Clarity of concept and consistency of nomenclature facilitate effective transdisciplinary communication, education, and ultimately further discovery