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Mostrando 25-36 de 37076 artigos, teses e dissertações.
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25. Heteroannulation Reaction of α-Aminoketones for the Efficient Synthesis of 4-Imidazolin-2-ones and 2-Thiones
The hydrogenation of α-oximinoketones in methanol/HCl afforded α-aminoketones, which were applied without purification to the synthesis of 4-imidazolin-2-ones and 2-thiones, including chiral derivatives. The latter two series were obtained in high yields by a heteroannulation reaction of α-aminoketones with isocyanates and isothiocyanates, respectively. A
Journal of the Brazilian Chemical Society. Publicado em: 2022
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26. REPLY TO “REFLEXIVITY, ROLE CONFLICTS, AND THE MEANING OF ENGLISH SELF PRONOUNS”
Abstract Stern’s Columbia School Theory contribution on English self-pronouns provides a wonderful illustration of the explanatory power of an approach that refuses to be taken in by a priori grammatical categories like reflexivity, which have the unfortunate consequence of giving the analyst the impression that he or she already knows all about the semant
Manuscrito. Publicado em: 2022
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27. COUNTERFACTUAL ANALYSIS BY ALGORITHMIC COMPLEXITY: A METRIC BETWEEN POSSIBLE WORLDS
Abstract Counterfactuals have become an important area of interdisciplinary interest, especially in logic, philosophy of language, epistemology, metaphysics, psychology, decision theory, and even artificial intelligence. In this study, we propose a new form of analysis for counterfactuals: analysis by algorithmic complexity. Inspired by Lewis-Stalnaker's Pos
Manuscrito. Publicado em: 2022
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28. Chronic Chikungunya arthralgia reduces functionality, quality of life and occupational performance: descriptive cross-sectional study
RESUMO JUSTIFICATIVA E OBJETIVOS: A poliartralgia crônica do vírus Chikungunya (CHIKV) deteriora a funcionalidade e a produtividade do trabalho. O objetivo deste estudo foi avaliar funcionalidade, dor, qualidade de vida e sono de indivíduos com artralgia crônica por CHIKV correlacionada com sintomas clínicos, produtividade do trabalho e comprometimento
BrJP. Publicado em: 2022
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29. Premenstrual Syndrome and Childbirth Fear Prior to Pregnancy in Young Women: An Association and Cross-Sectional Study
SUMMARY OBJECTIVE: The aim of the study was to determine the association between premenstrual syndrome and the childbirth fear prior to pregnancy. METHODS: This was an association and cross-sectional study conducted on 327 university students. Data were collected using “Participant Information Form,” “Premenstrual Syndrome Scale,” and “Childbirth
Revista da Associação Médica Brasileira. Publicado em: 2022
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30. Simple Spectrophotometric Determination of Iron in Diesel Oil after Sample Preparation Employing Extraction Induced by Emulsion Breaking
This work reports the development of a simple and fast method for the spectrophotometric determination of Fe in diesel oil using the classic reaction with 1,10-phenanthroline after its extraction induced by emulsion breaking (EIEB). The extraction parameters of EIEB were optimized (concentration of HNO3 and Triton X-100® in the emulsifying solution) as well
Journal of the Brazilian Chemical Society. Publicado em: 2022
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31. Fuzzy Modelling to Describe the Pollutant Concentration in Fluids
ABSTRACT The study of the concentration dynamics of a pollutant substance in a fluid is a classic problem of fluid mechanics given by the transport equation u t + cu x = 0, where u = u(x,t) denotes the pollutant concentration along a horizontal pipe of a fixed cross-section in the positive x direction at he time t > 0 and c represents the fluid propagation
Trends in Computational and Applied Mathematics. Publicado em: 2022
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32. Tandem Synthesis of Furanaphthoquinones via Enamines and Evaluation of Their Antiparasitic Effects against Trypanosoma cruzi
Furanaphthoquinones are well known in medicinal chemistry for exhibiting relevant structural heterogeneity and bioactivities. In this work, it was synthesized a series of furanaphthoquinones through a tandem reaction between lawsone (8) and cyclic ketones in the presence of morpholine. This strategy provides an efficient and general method for synthesizing f
Journal of the Brazilian Chemical Society. Publicado em: 2022
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33. TWO ARGUMENTS FOR THE INCOHERENCE OF NON-TELEOLOGICAL DEISM
Abstract I argue that one form of deism, what I shall call ‘moderate non-teleological deism’, seems prima facie incoherent (at least on the assumption of the intuitive Anselmian conception of God). I offer two arguments in support of the prima facie incoherence view: the moral irresponsibility argument and the practical irrationality argument. On the one
Manuscrito. Publicado em: 2022
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34. Stem cell therapy as a potential treatment option for psoriasis
Abstract Psoriasis is a chronic inflammatory dermatological disorder characterized by white scales and clearly demarcated erythematous plaques. The prevalence of psoriasis varies from country to country and can occur at any age, implying that ethnicity, environmental factors, and genetic background all play a role in its onset. According to the World Psorias
Anais Brasileiros de Dermatologia. Publicado em: 2022
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35. Sporotrichosis: hyperendemic by zoonotic transmission, with atypical presentations, hypersensitivity reactions and greater severity
Abstract In recent decades, an alarming increase in the number of sporotrichosis cases has been reported in southern and southeastern Brazil, especially in the state of Rio de Janeiro, has been considered a long-term hyperendemic condition associated with feline transmission. According to phenotypic classifications, the Sporothrix species recovered from cats
Anais Brasileiros de Dermatologia. Publicado em: 2022
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36. Reframing “Organizations and Society” from the Escrevivências: for a Form of Management from and in the Gaps
Resumo Este não é um texto convencional, que segue as normas instituídas do pesquisar em estudos organizacionais, porém, aqui não abrimos mão da cientificidade exigida pela academia. É, apenas, uma outra forma de fazer e escrever, da mesma maneira que se dá com as práticas desenvolvidas por aqueles que estão apartados do modo de organizar dominante
Organizações & Sociedade. Publicado em: 2022