38 research outputs found

    Managing the Technology for Selectively Collecting Solid Waste in the Western Amazon Sub Region

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    This study's main objective is to study the complexity of technological management of the collection of solid waste, through the prism of reverse logistics; and to propose certain specific objectives: (1) to describe the form of concentration of solid waste in the group studied; (2) to analyze the impact of the volume of solid waste; and (3) to propose intervention measures for solid waste management. It asks what technology management model should guide the selective collection of solid waste in the Amazon. Based on the theory of convergence, it studies the strategy of competitive advantage in understanding the organizational system in the environment in which it operates; on this theory, Nobre (2011) addresses knowledge as a source that transmits competitive edge in order to contribute to a company's organizational system. The research is qualitative and descriptive; it applies the Case Study method, and related procedures. As a study, it confirms that the investigated collector cooperatives are vulnerable, which influences the conclusions of this study. It finds that the collectors employed by these organizations are the significant environmental agents in the process of reusing and recycling materials and thus play a key role in reverse logistics because they can return the waste to the production chain adding value and promoting shared management,. The results also point to the absence of a system to promote environmental education, despite the potential viability of the materials and regardless of the possible economic and social improvements to the Amazonians and their families. The system proposed here involves the selective collection of solid waste by intelligent machines, applying reverse logistics. This study could benefit business people, the government and other stakeholders in public policy and sustainability in fragile environments such as the Brazilian Amazon.info:eu-repo/semantics/publishedVersio

    Análise da prevalência de sobrepeso, obesidade e risco cardíaco nos escolares da rede municipal de ensino

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    To analyze the prevalence of overweight and obesity and cardiac risk among schoolchildren in the municipal network, differentiating groups from rural and urban schools. Methods: The present study is characterized as descriptive, of a quantitative character, having a cross section. The current study used a random sample by listing the sample in a population of 3,547 students, the sample selected was 11.76% (482 students), of students aged between 7 and 12 years. The hypothesis raised is that there is no significant difference between schoolchildren in rural and urban areas. For the sample selection, Kazmier's statistical calculation was applied, respecting a margin of error of 0.05%. Results: Of the 482 students, 230 were males and 252 females. The prevalence of normal, overweight and obesity was 69%, 19% and 11%, respectively, in males, and 77%, 10% and 13%, respectively. urban area giving a total of 111 students divided into 52 males and 59 females. Conclusion: In the current study there was no significant difference in the variables that indicate a tendency to overweight and obesity. In the variable that indicates cardiac risk there was a difference in the male and female groups, with an emphasis on increase in school children in the rural area

    Non-Hermitian Quantum Mechanics with Minimal Length Uncertainty

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    We study non-Hermitian quantum mechanics in the presence of a minimal length. In particular we obtain exact solutions of a non-Hermitian displaced harmonic oscillator and the Swanson model with minimal length uncertainty. The spectrum in both the cases are found to be real. It is also shown that the models are η pseudo-Hermitian and the metric operator is found explicitly in both the cases

    Poisoning by parental pq: case report in a city of Amazonia/Brazil

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    This study aimed to present a case and propose the major labels nursing diagnoses in intensive care in victim parenteral Paraquat poisoning. We used the descriptive qualitative case study method with retrospective approach in medical records of a patient admitted to the intensive care unit. The data analyzed resulted in 35 nursing diagnoses, hepatorenal involvement on post intoxication day with PQ, and the third day manifestations severe respiratory clinics. Concludes that intoxication with PQ via parenteral cause 100% mortality

    O efeito das drogas no desenvolvimento de AVC isquêmico em pacientes jovens - uma revisão de literatura / The effect of drugs on the development of ischemic stroke in young patients a literature review

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    OBJETIVO: Neste artigo buscamos um estudo para correlacionar o uso de drogas e o desenvolvimento de Acidente Vascular Cerebral (AVC) do tipo isquêmico em jovens, destacando os efeitos que essas drogas possuem no desenvolvimento dessa fisiopatologia. MÉTODOS: Revisão de literatura de caráter exploratório baseada em evidências, em que se observou uma associação entre o efeito do uso de drogas ilícitas e o desenvolvimento de AVC isquêmico. RESULTADOS: Para este artigo, foram escolhidos 12 estudos para contribuir com essa revisão de literatura. Nesse sentido, optou-se pelas seguintes bases de dados: SciELO, BVS, Medline, Google Scholar e PubMed. DISCUSSÃO: Nos artigos selecionados, o tipo de droga consumida gera uma ação específica sobre a vascularização o qual provoca repercussões tromboembólicas como o AVC isquêmico. Dessa forma, cita-se que a cocaína gera ativação do sistema simpático e em doses mais altas bloqueio dos canais de potássio e arritmias vasculares, enquanto que a cannabis interfere tanto na questão cardiovascular quanto na questão coagulatória. Ademais, vale mencionar o papel da heroína em estar associada a endocardite infecciosa e embolia paradoxal para contribuir com essa fisiopatologia. CONCLUSÃO: Em síntese, existe uma associação entre alterações circulatórias e o uso de drogas nos pacientes jovens, uma vez que essas substâncias alteram ritmos cardíacos, estimulam excessivamente o coração e por fim auxiliam a formação de bloqueios arteriais, como na artéria cerebral média. Diante disso, é perceptível que essas consequências aumentam as chances de desenvolvimento de um AVC isquêmico nos consumidores de tais drogas. Portanto, é vital que haja medidas de conscientização do consumo de drogas uma vez que provoca repercussões negativas tanto aos pacientes jovens quanto ao sistema de saúde.

    Pervasive gaps in Amazonian ecological research

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    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

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    Pervasive gaps in Amazonian ecological research

    Get PDF
    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

    Rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART): Study protocol for a randomized controlled trial

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    Background: Acute respiratory distress syndrome (ARDS) is associated with high in-hospital mortality. Alveolar recruitment followed by ventilation at optimal titrated PEEP may reduce ventilator-induced lung injury and improve oxygenation in patients with ARDS, but the effects on mortality and other clinical outcomes remain unknown. This article reports the rationale, study design, and analysis plan of the Alveolar Recruitment for ARDS Trial (ART). Methods/Design: ART is a pragmatic, multicenter, randomized (concealed), controlled trial, which aims to determine if maximum stepwise alveolar recruitment associated with PEEP titration is able to increase 28-day survival in patients with ARDS compared to conventional treatment (ARDSNet strategy). We will enroll adult patients with ARDS of less than 72 h duration. The intervention group will receive an alveolar recruitment maneuver, with stepwise increases of PEEP achieving 45 cmH(2)O and peak pressure of 60 cmH2O, followed by ventilation with optimal PEEP titrated according to the static compliance of the respiratory system. In the control group, mechanical ventilation will follow a conventional protocol (ARDSNet). In both groups, we will use controlled volume mode with low tidal volumes (4 to 6 mL/kg of predicted body weight) and targeting plateau pressure <= 30 cmH2O. The primary outcome is 28-day survival, and the secondary outcomes are: length of ICU stay; length of hospital stay; pneumothorax requiring chest tube during first 7 days; barotrauma during first 7 days; mechanical ventilation-free days from days 1 to 28; ICU, in-hospital, and 6-month survival. ART is an event-guided trial planned to last until 520 events (deaths within 28 days) are observed. These events allow detection of a hazard ratio of 0.75, with 90% power and two-tailed type I error of 5%. All analysis will follow the intention-to-treat principle. Discussion: If the ART strategy with maximum recruitment and PEEP titration improves 28-day survival, this will represent a notable advance to the care of ARDS patients. Conversely, if the ART strategy is similar or inferior to the current evidence-based strategy (ARDSNet), this should also change current practice as many institutions routinely employ recruitment maneuvers and set PEEP levels according to some titration method.Hospital do Coracao (HCor) as part of the Program 'Hospitais de Excelencia a Servico do SUS (PROADI-SUS)'Brazilian Ministry of Healt
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