A Importância da experimentação na introdução à temática de soluções

A importância da experimentação como ferramenta de ensino é evidenciada em muitos estudos da área de química, por permitir uma melhor articulação entre teoria e prática, facilitando assim a compreensão dos conceitos pelos alunos. Diante desta realidade, os bolsistas do Programa Institucional de Bolsas de Iniciação à Docência (PIBID) elaboraram uma atividade experimental com o intuito de proporcionar uma experiência de aprendizagem diferente aos discentes do Instituto Federal de Educação, Ciência e Tecnologia da Bahia (IFBA) no contexto relacionado ao assunto de soluções químicas. O experimento teve como base o preparo de diversas soluções com sulfato de cobre II, para que os alunos vissem na prática conceitos como soluto, solvente, concentração e diluição.  Com intuito de analisar o processo de aprendizado e as experiências adquiridas ao longo da participação na atividade experimental, foi aplicado um formulário com questões relacionadas à atividade proposta, percebeu-se então que os estudantes conseguiram articular os conceitos de soluções, a partir dos experimentos realizados, além disso, foi perceptível também a participação e as interações argumentativas entre os estudantes, a fim de explicar os fenômenos observados

The importance of experimentation in introducing the subject ofsolutions: La importancia de la experimentación al introducir el tema desoluciones

A importância da experimentação como ferramenta de ensino é evidenciada em muitos estudos da área de química, por permitir uma melhor articulação entre teoria e prática, facilitando assim a compreensão dos conceitos pelos alunos. Diante desta realidade, os bolsistas do Programa Institucional de Bolsas de Iniciação à Docência (PIBID) elaboraram uma atividade experimental com o intuito de proporcionar uma experiência de aprendizagem diferente aos discentes do Instituto Federal de Educação, Ciência e Tecnologia da Bahia (IFBA) no contexto relacionado ao assunto de soluções químicas. O experimento teve como base o preparo de diversas soluções com sulfato de cobre II, para que os alunos vissem na prática conceitos como soluto, solvente, concentração e diluição.  Com intuito de analisar o processo de aprendizado e as experiências adquiridas ao longo da participação na atividade experimental, foi aplicado um formulário com questões relacionadas à atividade proposta, percebeu-se então que os estudantes conseguiram articular os conceitos de soluções, a partir dos experimentos realizados, além disso, foi perceptível também a participação e as interações argumentativas entre os estudantes, a fim de explicar os fenômenos observados.The importance of experimentation as a teaching tool is evident in many studies in the area of ​​chemistry, as it allows a better articulation between theory and practice, thus facilitating the understanding of concepts by students. Faced with this reality, scholarship holders of the Institutional Teaching Initiation Scholarship Program (PIBID) developed an activity experimental with the aim of providing a different learning experience to students from the Federal Institute of Education, Science and Technology of Bahia (IFBA) in the contexto related to the subject of chemical solutions. The experiment was based on the preparation of several solutions with copper II sulfate, so that students could see in practice concepts such as solute, solvent, concentration and dilution. In order to analyze the learning process and the experiences acquired throughout participation in the experimental activity, a form with questions related to the proposed activity, it was then realized that students managed to articulate the concepts of solutions, based on the experiments carried out, in addition to In addition, participation and argumentative interactions between students were also noticeable, in order to explain the observed phenomena.  La importancia de la experimentación como herramienta de enseñanza se evidencia en muchos estudios del área de química, ya que permite una mejor articulación entre la teoría y la práctica, facilitando así la comprensión de los conceptos por parte de los estudiantes. Ante esta realidad, los becarios del Programa Institucional de Becas de Iniciación a la Docencia (PIBID) elaboraron una actividad experimental con el objetivo de proporcionar una experiencia de aprendizaje diferente a los estudiantes del Instituto Federal de Educación, Ciencia y Tecnología de Bahía (IFBA) en el contexto relacionado con el tema de soluciones químicas. El experimento se basó en la preparación de diversas soluciones con sulfato de cobre II, para que los alumnos pudieran ver en la práctica conceptos como soluto, solvente, concentración y dilución. Con el fin de analizar el proceso de aprendizaje y las experiencias adquiridas durante la participación en la actividad experimental, se aplicó un formulario con preguntas relacionadas con la actividad propuesta. Se observó que los estudiantes lograron articular los conceptos de soluciones a partir de los experimentos realizados. Además, se percibió la participación y las interacciones argumentativas entre los estudiantes para explicar los fenómenos observados

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

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

Assessment of asymmetry at different intensities between conventional and paralympic powerlifting athletes

Powerlifting competitions require consistent and symmetric lifting of heavy loads and maximal effort, in which, asymmetric lifting results in trial invalidation. Symmetry during this very high intensity movement is determinant to athletes’ performance and success in competitions. This study aimed to compare the asymmetry between Conventional Powerlifting athletes (CP) and Paralympic (PP) athletes at intensities of 45 and 80% 1RM before and after a training session. Twenty-two male athletes (11 CP: 29.84 ± 4.21 and 11 PP: 30.81 ± 8.05 years old) participated in this study. Mean Propulsive Velocity (MPV), Maximum Velocity (Vmax) and Power during the concentric and eccentric phases were evaluated at 45%-1RM before and after a training session. For the intensity of 80%-1RM, MPV, Vmax and Power were measured in the first and last series (5 series of 5 repetitions: 5X5) of a training session. PP athletes demonstrated lower velocity and greater symmetry at 45%-1RM, but higher velocity and less asymmetry at 80%-1RM, when compared to CP. The data indicated that PP athletes tend to be slower at lower intensities, faster at higher intensities in absolute values, and have greater symmetry than CP

Influence of sociodemographic and emotional factors on the relationship between self-compassion and perceived stress among men residing in Brazil during the COVID-19 pandemic

The analysis of sociodemographic and emotional factors is essential to understanding how men perceive stress and practice self-compassion. In health crises, this problem becomes an emergency for public health. This study aimed to analyze the influence of sociodemographic and emotional factors on the relationship between self-compassion and the perceived stress of men residing in Brazil during the COVID-19 pandemic. This is a nationwide cross-sectional study carried out between June and December 2020 with 1006 men who completed a semi-structured electronic questionnaire. Data were collected using the snowball technique. Perceived stress was measured by the Perceived Stress Scale (PSS-14), and self-compassion was assessed using the Self-Compassion Scale. Most men had low self-compassion (51.5%; n = 516) and a moderate level of perceived stress (60.9%; n = 613), while 15.9% (n = 170) had a high level of stress. The prevalence of men in the combined situation of low self-compassion and high perceived stress was 39.4% (n = 334). Living with friends had a higher prevalence of low self-compassion and high perceived stress. The prevalence of common mental disorders was high (54.3%). Men with low levels of self-compassion reported higher levels of perceived stress; however, this association was moderated by emotional and sociodemographic variables. These findings highlight the importance of considering individual and contextual factors in public policies promoting men’s mental health.info:eu-repo/semantics/publishedVersio

Monitoring the Establishment of VOC Gamma in Minas Gerais, Brazil: A Retrospective Epidemiological and Genomic Surveillance Study

Since its first identification in Brazil, the variant of concern (VOC) Gamma has been associated with increased infection and transmission rates, hospitalizations, and deaths. Minas Gerais (MG), the second-largest populated Brazilian state with more than 20 million inhabitants, observed a peak of cases and deaths in March&ndash;April 2021. We conducted a surveillance study in 1240 COVID-19-positive samples from 305 municipalities distributed across MG&rsquo;s 28 Regional Health Units (RHU) between 1 March to 27 April 2021. The most common variant was the VOC Gamma (71.2%), followed by the variant of interest (VOI) zeta (12.4%) and VOC alpha (9.6%). Although the predominance of Gamma was found in most of the RHUs, clusters of Zeta and Alpha variants were observed. One Alpha-clustered RHU has a history of high human mobility from countries with Alpha predominance. Other less frequent lineages, such as P.4, P.5, and P.7, were also identified. With our genomic characterization approach, we estimated the introduction of Gamma on 7 January 2021, at RHU Belo Horizonte. Differences in mortality between the Zeta, Gamma and Alpha variants were not observed. We reinforce the importance of vaccination programs to prevent severe cases and deaths during transmission peaks