81 research outputs found

    Work Product: The Anticipation of Litigation Requirement Under Florida Rule of Civil Procedure 1.280(b)(2).

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    When an accident occurs which results in injuries or property damage an investigation is usually conducted within a short period of time to determine the rights and liabilities of the parties involved

    A interpretação tomista da física de Aristóteles

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    O pensamento antigo não se perdeu completamente no Ocidente,permanecendo pela Alta Idade Média uma coleção de fragmentos defilósofos gregos e romanos que se transmitiram por enciclopédias comoas de Boécio (480-524 dC), Isidoro de Sevilha (560-636 dC),Cassiodoro (490-580 dC) e Beda (673-735 d

    Da alquimia à química moderna

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    (1º parágrafo do artigo) Até muito recentemente, a História da Ciência deu pouca atenção ao estudo da Alquimia, a arte de transformar metais vis em ouro. Na verdade, parecia tratar-se de puro charlatismo, visto que nossos conhecimentos em Química nos garantem a impossibilidade de se transformar um elemento químico em outro. O desenvolvimento mais recente da Radioatividade, tornou novamente aberta a questão, porém permaneceu a descrença de ter sido possível a transmutação de metais, numa época em que não se contava com a técnica necessária para tal

    Da alquimia à química moderna

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    (1º parágrafo do artigo) Até muito recentemente, a História da Ciência deu pouca atenção ao estudo da Alquimia, a arte de transformar metais vis em ouro. Na verdade, parecia tratar-se de puro charlatismo, visto que nossos conhecimentos em Química nos garantem a impossibilidade de se transformar um elemento químico em outro. O desenvolvimento mais recente da Radioatividade, tornou novamente aberta a questão, porém permaneceu a descrença de ter sido possível a transmutação de metais, numa época em que não se contava com a técnica necessária para tal

    Produção de conhecimento e tradições de pesquisa na Faculdade de Filosofia, Ciências e Letras – USP (1934-1968)

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    This paper’s objective is to present the first results obtained by the Scientific and Academic Memory: Document Preservation of Faculty of Philosophy, Sciences and Letters of USP (1934-1968) project, approved in USP Memory Notice 2012, by the Culture and Extension rectory. This project aims to characterize the research traditions from the first decades of the Faculty of Philosophy, Sciences and Letters, created in 1934, to the university reform of 1969. This article presents the analysis of different theses and dissertations presented on the faculty’s various scientific fields, after the search for what we call “scientific genealogies”, a way to track the guiding teachers and their students. This way, we intend to see which students remained at the university and, in turn, have become mentors in their respective fields.O objetivo deste artigo é apresentar os primeiros resultados do projeto Memória científica e acadêmica: preservação documental da Faculdade de Filosofia, Ciências e Letras da USP (1934-1968), aprovado no Edital Memória USP 2012, da Pró-reitoria de Cultura e Extensão. Tal projeto pretende caracterizar tradições de pesquisa presentes nas primeiras décadas da Faculdade de Filosofia, Ciências e Letras da USP, criada em 1934, até a reforma universitária de 1969. A proposta está centrada na análise das teses e dissertações que foram orientadas e defendidas nas várias áreas científicas que compunham a faculdade, por meio da busca do que chamamos de ‘genealogias científicas’, uma forma de acompanhar os docentes orientadores e seus alunos. Desta maneira busca-se verificar os alunos que permaneceram na universidade e, que por sua vez, também se tornaram orientadores em suas respectivas áreas

    KRAS-mutant non-small cell lung cancer (NSCLC) therapy based on tepotinib and omeprazole combination

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    Background KRAS-mutant non-small cell lung cancer (NSCLC) shows a relatively low response rate to chemotherapy, immunotherapy and KRAS-G12C selective inhibitors, leading to short median progression-free survival, and overall survival. The MET receptor tyrosine kinase (c-MET), the cognate receptor of hepatocyte growth factor (HGF), was reported to be overexpressed in KRAS-mutant lung cancer cells leading to tumor-growth in anchorage-independent conditions. Methods Cell viability assay and synergy analysis were carried out in native, sotorasib and trametinib-resistant KRAS-mutant NSCLC cell lines. Colony formation assays and Western blot analysis were also performed. RNA isolation from tumors of KRAS-mutant NSCLC patients was performed and KRAS and MET mRNA expression was determined by real-time RT-qPCR. In vivo studies were conducted in NSCLC (NCI-H358) cell-derived tumor xenograft model. Results Our research has shown promising activity of omeprazole, a V-ATPase-driven proton pump inhibitor with potential anti-cancer properties, in combination with the MET inhibitor tepotinib in KRAS-mutant G12C and non-G12C NSCLC cell lines, as well as in G12C inhibitor (AMG510, sotorasib) and MEK inhibitor (trametinib)-resistant cell lines. Moreover, in a xenograft mouse model, combination of omeprazole plus tepotinib caused tumor growth regression. We observed that the combination of these two drugs downregulates phosphorylation of the glycolytic enzyme enolase 1 (ENO1) and the low-density lipoprotein receptor-related protein (LRP) 5/6 in the H358 KRAS G12C cell line, but not in the H358 sotorasib resistant, indicating that the effect of the combination could be independent of ENO1. In addition, we examined the probability of recurrence-free survival and overall survival in 40 early lung adenocarcinoma patients with KRAS G12C mutation stratified by KRAS and MET mRNA levels. Significant differences were observed in recurrence-free survival according to high levels of KRAS mRNA expression. Hazard ratio (HR) of recurrence-free survival was 7.291 (p = 0.014) for high levels of KRAS mRNA expression and 3.742 (p = 0.052) for high MET mRNA expression. Conclusions We posit that the combination of the V-ATPase inhibitor omeprazole plus tepotinib warrants further assessment in KRAS-mutant G12C and non G12C cell lines, including those resistant to the covalent KRAS G12C inhibitors

    Spatial distribution of the risk of dengue fever in southeast Brazil, 2006-2007

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    Background: Many factors have been associated with circulation of the dengue fever virus and vector, although the dynamics of transmission are not yet fully understood. The aim of this work is to estimate the spatial distribution of the risk of dengue fever in an area of continuous dengue occurrence. Methods: This is a spatial population-based case-control study that analyzed 538 cases and 727 controls in one district of the municipality of Campinas, Sao Paulo, Brazil, from 2006-2007, considering socio-demographic, ecological, case severity, and household infestation variables. Information was collected by in-home interviews and inspection of living conditions in and around the homes studied. Cases were classified as mild or severe according to clinical data, and they were compared with controls through a multinomial logistic model. A generalized additive model was used in order to include space in a non-parametric fashion with cubic smoothing splines. Results: Variables associated with increased incidence of all dengue cases in the multiple binomial regression model were: higher larval density (odds ratio (OR) = 2.3 (95%CI: 2.0-2.7)), reports of mosquito bites during the day (OR = 1.8 (95%CI: 1.4-2.4)), the practice of water storage at home (OR = 2.5 (95%CI: 1.4, 4.3)), low frequency of garbage collection (OR = 2.6 (95%CI: 1.6-4.5)) and lack of basic sanitation (OR = 2.9 (95%CI: 1.8-4.9)). Staying at home during the day was protective against the disease (OR = 0.5 (95%CI: 0.3-0.6)). When cases were analyzed by categories (mild and severe) in the multinomial model, age and number of breeding sites more than 10 were significant only for the occurrence of severe cases (OR = 0.97, (95%CI: 0.96-0.99) and OR = 2.1 (95%CI: 1.2-3.5), respectively. Spatial distribution of risks of mild and severe dengue fever differed from each other in the 2006/2007 epidemic, in the study area. Conclusions: Age and presence of more than 10 breeding sites were significant only for severe cases. Other predictors of mild and severe cases were similar in the multiple models. The analyses of multinomial models and spatial distribution maps of dengue fever probabilities suggest an area-specific epidemic with varying clinical and demographic characteristics

    Global, regional, and national comparative risk assessment of 79 behavioural, environmental and occupational, and metabolic risks or clusters of risks, 1990-2015: a systematic analysis for the Global Burden of Disease Study 2015

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    SummaryBackground The Global Burden of Diseases, Injuries, and Risk Factors Study 2015 provides an up-to-date synthesis of the evidence for risk factor exposure and the attributable burden of disease. By providing national and subnational assessments spanning the past 25 years, this study can inform debates on the importance of addressing risks in context. Methods We used the comparative risk assessment framework developed for previous iterations of the Global Burden of Disease Study to estimate attributable deaths, disability-adjusted life-years (DALYs), and trends in exposure by age group, sex, year, and geography for 79 behavioural, environmental and occupational, and metabolic risks or clusters of risks from 1990 to 2015. This study included 388 risk-outcome pairs that met World Cancer Research Fund-defined criteria for convincing or probable evidence. We extracted relative risk and exposure estimates from randomised controlled trials, cohorts, pooled cohorts, household surveys, census data, satellite data, and other sources. We used statistical models to pool data, adjust for bias, and incorporate covariates. We developed a metric that allows comparisons of exposure across risk factors—the summary exposure value. Using the counterfactual scenario of theoretical minimum risk level, we estimated the portion of deaths and DALYs that could be attributed to a given risk. We decomposed trends in attributable burden into contributions from population growth, population age structure, risk exposure, and risk-deleted cause-specific DALY rates. We characterised risk exposure in relation to a Socio-demographic Index (SDI). Findings Between 1990 and 2015, global exposure to unsafe sanitation, household air pollution, childhood underweight, childhood stunting, and smoking each decreased by more than 25%. Global exposure for several occupational risks, high body-mass index (BMI), and drug use increased by more than 25% over the same period. All risks jointly evaluated in 2015 accounted for 57·8% (95% CI 56·6–58·8) of global deaths and 41·2% (39·8–42·8) of DALYs. In 2015, the ten largest contributors to global DALYs among Level 3 risks were high systolic blood pressure (211·8 million [192·7 million to 231·1 million] global DALYs), smoking (148·6 million [134·2 million to 163·1 million]), high fasting plasma glucose (143·1 million [125·1 million to 163·5 million]), high BMI (120·1 million [83·8 million to 158·4 million]), childhood undernutrition (113·3 million [103·9 million to 123·4 million]), ambient particulate matter (103·1 million [90·8 million to 115·1 million]), high total cholesterol (88·7 million [74·6 million to 105·7 million]), household air pollution (85·6 million [66·7 million to 106·1 million]), alcohol use (85·0 million [77·2 million to 93·0 million]), and diets high in sodium (83·0 million [49·3 million to 127·5 million]). From 1990 to 2015, attributable DALYs declined for micronutrient deficiencies, childhood undernutrition, unsafe sanitation and water, and household air pollution; reductions in risk-deleted DALY rates rather than reductions in exposure drove these declines. Rising exposure contributed to notable increases in attributable DALYs from high BMI, high fasting plasma glucose, occupational carcinogens, and drug use. Environmental risks and childhood undernutrition declined steadily with SDI; low physical activity, high BMI, and high fasting plasma glucose increased with SDI. In 119 countries, metabolic risks, such as high BMI and fasting plasma glucose, contributed the most attributable DALYs in 2015. Regionally, smoking still ranked among the leading five risk factors for attributable DALYs in 109 countries; childhood underweight and unsafe sex remained primary drivers of early death and disability in much of sub-Saharan Africa. Interpretation Declines in some key environmental risks have contributed to declines in critical infectious diseases. Some risks appear to be invariant to SDI. Increasing risks, including high BMI, high fasting plasma glucose, drug use, and some occupational exposures, contribute to rising burden from some conditions, but also provide opportunities for intervention. Some highly preventable risks, such as smoking, remain major causes of attributable DALYs, even as exposure is declining. Public policy makers need to pay attention to the risks that are increasingly major contributors to global burden. Funding Bill & Melinda Gates Foundation
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