Reaction Rate
Mostrando 1-12 de 2517 artigos, teses e dissertações.
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1. Nicotine as a Catalyst for Chlorination Promoted by Hypochlorous Acid: Experimental and Theoretical Studies
There is robust evidence of the hypochlorous acid (HClO)-mediated damage in biomolecules, and nicotine boosts the chlorination potency of HClO. We present experimental and theoretical evidence of the mechanism by which nicotine catalyzes the chlorination of pyranine. The rate constants for chlorination of pyranine by HClO were measured in the presence (5.3 �
Journal of the Brazilian Chemical Society. Publicado em: 2023
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2. Thermal Infrared Enthalpimetry Method for the Determination of Hypochlorite in Bleaching Solutions
Thermal infrared enthalpimetry (TIE) was used for hypochlorite determination in commercial hypochlorite-based bleaching solutions. Experimental parameters were evaluated for the reaction with a hydrogen peroxide solution. The most relevant conditions were 5% H2O2 (m/m) solution, stirring speed of 250 rpm, dispensing rate of 0.57 mL s-1, and 10 s after reacti
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. Clinical effects of oral motor intervention combined with non-nutritive sucking on oral feeding in preterm infants with dysphagia
Abstract Objective: To explore the effectiveness of oral motor intervention combined with non-nutritive sucking in treating premature infants with dysphagia. Methods: Sixty preterm infants admitted to the neonatal intensive care unit of the present study’s hospital were selected and randomly divided into the control and intervention groups. The control g
Jornal de Pediatria. Publicado em: 2022
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4. Tuning the Photocatalytic Activity of Tin Oxide through Mechanical Surface Activation
Tin oxide (SnO2) nanoparticles were synthesized by the co-precipitation method and mechanically modified by high-energy ball milling. The experimental results demonstrate that the collision with zirconia balls produces slight changes in the crystalline, electronic, morphological, and surface properties of SnO2, which lead to an increase in the redox potentia
Journal of the Brazilian Chemical Society. Publicado em: 2022
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5. Association between leukocyte telomere length and sex by quantile regression analysis
ABSTRACT Introduction: Telomere length (TL) is a biomarker of cellular proliferative history. In healthy individuals, leukocyte TL shortens with age and associates with the lifespan of men and women. However, most of studies had used linear regression models to address the association of the TL attrition, aging and sex. Methods: We evaluated the associatio
Hematology, Transfusion and Cell Therapy. Publicado em: 2022
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6. HEART RATE REACTION OF BASKETBALL PLAYERS UNDER ENDURANCE TRAINING
RESUMO Introdução: Muitos jogadores têm um alto nível de treinamento na atual equipe chinesa de basquetebol. Contudo, os atletas tendem a ter problemas relacionados à frequência cardíaca em competições oficiais. Portanto, é importante monitorar e controlar o batimento cardíaco visando obter a melhora de desempenho nos jogadores. Objetivo: Invest
Revista Brasileira de Medicina do Esporte. Publicado em: 2022
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7. Valorization of Hesperidin from Citrus Residues: Evaluation of Microwave-Assisted Synthesis of Hesperidin-Mg Complex and Their Insecticidal Activity
The aim of the current study was the valorization of hesperidin, the dominant flavonoid in citrus processing waste, by microwave-assisted synthesis of hesperidin-Mg complex, improving its antioxidant activity and insecticidal potential. Here we show, for the first time, that microwave-assisted synthesis of [Mg(hesp)2(phen)]OAc (1) (hesp: hesperidin, phen: ph
Journal of the Brazilian Chemical Society. Publicado em: 2022
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8. Evaluation of skin test indications for general anesthetics in real life: a prospective cohort study
Abstract Background In daily practice, atopic patients and those who have other drug allergies are referred to allergy clinics for evaluation of possible general anesthetic allergy despite the fact that it is not recommended in recent guidelines. Objective The aim of this prospective study is to determine the negative predictive value of skin tests for com
Brazilian Journal of Anesthesiology. Publicado em: 2022
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9. EXERCISE RESISTANCE EFFECT ON ADVERSE REACTION RATE IN HEART FAILURE
RESUMO Introdução: A insuficiência cardíaca é uma doença comum em idosos. No estágio final, além da disfunção cardíaca, os pacientes geralmente acompanham uma redução no teor de gordura e da massa magra. Objetivo: Estudar os efeitos da resistência ao exercício e da taxa de reação adversa em pacientes com insuficiência cardíaca. Métodos
Revista Brasileira de Medicina do Esporte. Publicado em: 2022
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10. Monoglyceride biosynthesis from coconut milk with lypase enzyme of sesame seed sprouts as biocatalyst
Abstract Monoglycerides are oleochemical compounds that were widely used as emulsifying agents for foods, anti-bacterial and anti-viruses (monolaurin, monocaprin). The objective of this research was to study the optimal reaction conditions in monoglyceride production from coconut milk. To achieve that purpose, the research was carried out with two factors, n
Food Sci. Technol. Publicado em: 2021-06
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11. Polymorphisms in the heme oxygenase-1 and bone morphogenetic protein receptor type 1b genes and estimated glomerular filtration rate in Brazilian sickle cell anemia patients
ABSTRACT Introduction Mutations affecting genes involved in oxidative and signaling pathways may be associated with kidney disease in sickle cell anemia. We determined the allele and genotype frequencies of some polymorphisms in the promoter regions of the Heme Oxygenase-1 (HMOX1) [rs2071746 (A > T) and (GT)n repeats, short (S) and long (L) alleles] and Bon
Hematol., Transfus. Cell Ther.. Publicado em: 2021-06
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12. Reduced Graphene Oxide/Ruthenium Oxide Hexacyanoferrate Nanocomposite for Electrochemical Determination of Ethanol in Commercial Samples
Reduced graphene oxide/ruthenium oxide hexacyanoferrate (rGO/RuOHCF) modified electrode showed synergic activity between the materials attested by the increase of electrochemical current and stability. The preparation of the nanocomposite was made by a simple two-step electrochemical approach. The material structure was characterized by spectroscopic techniq
J. Braz. Chem. Soc.. Publicado em: 2021-06