Toxicidade reprodutiva da Morinda citrifolia Linn /

Orientador : Paulo Roberto DalsenerDissertação (mestrado) - Universidade Federal do Paraná, Setor de Ciências Biológicas, Programa de Pós-Graduação em Farmacologia. Defesa: Curitiba, 2007Inclui bibliografi

BROOD: Bilevel and Robust Optimization and Outlier Detection for Efficient Tuning of High-Energy Physics Event Generators

The parameters in Monte Carlo (MC) event generators are tuned on experimental measurements by evaluating the goodness of fit between the data and the MC predictions. The relative importance of each measurement is adjusted manually in an often time consuming, iterative process to meet different experimental needs. In this work, we introduce several optimization formulations and algorithms with new decision criteria for streamlining and automating this process. These algorithms are designed for two formulations: bilevel optimization and robust optimization. Both formulations are applied to the datasets used in the ATLAS A14 tune and to the dedicated hadronization datasets generated by the SHERPA generator, respectively. The corresponding tuned generator parameters are compared using three metrics. We compare the quality of our automatic tunes to the published ATLAS A14 tune. Moreover, we analyze the impact of a pre-processing step that excludes data that cannot be described by the physics models used in the MC event generators

Ameloblastic fibroma: a case report

Ameloblastic fibroma is a rare benign odontogenic tumor in which both the epithelial and ectomesenchymal components are neoplastic. A 24-year-old male patient was referred to the Stomatology Department presenting with difficulty to chew and swelling in the right posterior region of the mandible. The panoramic radiograph showed a well-circumscribed, unilocular radiolucent lesion with partially radiopaque borders involving first and second unerupted molars. Computed tomography imaging presented a hypodense image with well‑delimited isodense content, bulging cortical bones and absence of rupture. The patient underwent an incisional biopsy.  Microscopically, the lesion was composed of many mesenchymal tissue cells in strand form, arranged in cords, islands and nests of odontogenic epithelium; the diagnostic was ameloblastic fibroma. The patient was referred to the hospital for enucleation and curettage of the lesion and extraction of the associated teeth. After 8 months of follow-up, no recurrence was observed. This case emphasizes the importance of differential diagnosis, anatomopathological exam, and both clinical and imaging follow-up, since tumors of this type can recur and progress to malignancy

Apprentice for Event Generator Tuning

Apprentice is a tool developed for event generator tuning. It contains a range of conceptual improvements and extensions over the tuning tool Professor. Its core functionality remains the construction of a multivariate analytic surrogate model to computationally expensive Monte-Carlo event generator predictions. The surrogate model is used for numerical optimization in chi-square minimization and likelihood evaluation. Apprentice also introduces algorithms to automate the selection of observable weights to minimize the effect of mis-modeling in the event generators. We illustrate our improvements for the task of MC-generator tuning and limit setting.Comment: 9 pages, 2 figures, submitted to the 25th International Conference on Computing in High-Energy and Nuclear Physic

Vídeos do YouTube: uma análise composicional

O escopo desta pesquisa é identificar os recursos semióticos empregados nos vídeos que abordam conceitos sobre a Educação do Campo no canal YouTube, por meio de uma análise composicional. Foram mapeados cinco canais mais acessados sobre a temática voltado ao público brasileiro e selecionado um vídeo popular de cada canal para a análise. No que tange a Educação do Campo os vídeos se mostram elucidativos, criativos e interativos; além de proporcionarem informações reais do que é a Educação do Campo, seus conceitos e desafios. Vindo a contemplar educadores e educandos sobre o verdadeiro sentido de troca de saberes

Holocene atmospheric iodine evolution over the North Atlantic

Atmospheric iodine chemistry has a large influence on the oxidizing capacity and associated radiative impacts in the troposphere. However, information on the evolution of past atmospheric iodine levels is restricted to the industrial period while its long-term natural variability remains unknown. The current levels of iodine in the atmosphere are controlled by anthropogenic ozone deposition to the ocean surface. Here, using high-resolution geochemical measurements from coastal eastern Greenland ReCAP (REnland ice CAP project) ice core, we report the first record of atmospheric iodine variability in the North Atlantic during the Holocene (i.e., the last 11 700 years). Surprisingly, our results reveal that the highest iodine concentrations in the record were found during the Holocene Thermal Maximum (HTM; ∼ 11 500-5500 years before-present). These high iodine levels could be driven by marine primary productivity resulting in an Early Holocene "biological iodine explosion". The high and stable iodine levels during this past warm period are a useful observational constraint on projections of future changes in Arctic atmospheric composition and climate resulting from global warming

Patient safety in plastic surgery: a systematic review

Introduction: patient safety has become an increasingly present topic in health research. Plastic surgery is a specialty in evidence, and it is necessary to adapt patient safety to its particularities. Methods: Systematic review to investigate actions related to patient safety in plastic surgery. MEDLINE and SCIELO were chosen to locate the studies. The descriptors: "patient safety" and "plastic surgery" were used in the MEDLINE database. In SCIELO, the descriptors: "segurança do paciente" e "cirurgia plástica" were used. In both cases, the publication period was between 2012-2018, totaling 15 articles. Results: The countries that published the most on the subject were the United States and Brazil. The most frequent concern was safety related to the training of plastic surgery residents. Tools like the checklist have also been used to improve security. Another concern that requires more study will be if the weekends have higher complications with surgeries performed during the week. However, well-formulated medical records, as well as the Informed Consent Form (ICT), appear to have a more solid basis in patient safety. Pre-anesthetic consultation also seems to favor patient safety. Furthermore, finally, the use of WhatsApp seems to be a safe tool, and that improves the care provided by the medical team. Conclusion: The need for more in-depth studies on this topic is emphasized, considering that a systematized protocol was not found