1. Agricultural tractor performance fueled with proportions of biodiesel

ABSTRACT Among the fuel sources used nowadays, biofuels stand out for being renewable and biodegradable. In this sense, this work aimed to evaluate the performance and smoke opacity of an agricultural tractor in soil tillage activities, depending on the biodiesel blends and the engine rotation. Were used six blends of soy (S) and murumuru (M) biodiesel and s

Revista Ceres. Publicado em: 2022

2. Morphology Behavior of Copper Films Deposited after Wet Surface Treatment on Polished Alumina

In this paper, a pre-treatment process for electroless copper (Cu) deposition on the polished alumina (Al2O3) 99.9% and the behavior of Cu plating by electroless process after Al2O3 surface treatment were explored. Our work was carried out by changing the roughness of Al2O3 through micro-etching (coarsening), nucleation its surface by a two-step method (sens

Journal of the Brazilian Chemical Society. Publicado em: 2022

3. Chemical monitoring of baru (dipteryx alata vog.) pulp fermented beverage

Abstract Considering that the consumption of baru is not yet fully diffused among humans, it is possible to perceive the need for its greater use, mainly because it is a natural source of sugars, essential raw material for the production of various products, such as beverages fermented. In view of the above, the objective of this work was to develop fermente

Food Sci. Technol. Publicado em: 2021-06

4. Trypanocidal Activity and Increased Solubility of Benznidazole Incorporated in PEG 4000 and Its Derivatives

Selecting a polymer depends on its characteristics, the properties of the drug and of the remaining ingredients in the formulation. The drug, when incorporated into a polymeric matrix, can show several advantages when compared with its conventional form. In this context, this work describes the preparation and characterization of polyethylene glycol (PEG 400

J. Braz. Chem. Soc.. Publicado em: 2021-06

5. Choosing Wisely for Thyroid Conditions: Recommendations of the Thyroid Department of the Brazilian Society of Endocrinology and Metabolism

ABSTRACT Objective: Choosing Wisely (CW) is an initiative that aims to advance the dialogue between physicians and patients about low-value health interventions. Given that thyroid conditions are frequent in clinical practice, we aimed to develop an evidence-based list of thyroid CW recommendations. Materials and methods: The Thyroid Department of the Braz

Arch. Endocrinol. Metab.. Publicado em: 2021-04

6. Hybrid Hydrogels Based on Polyethylene Glycol Bioconjugated with Silylated-Amyloidogenic Peptides

Hybrid-peptide hydrogel arrangements are a promising alternative to obtaining biocompatible structures at the nanoscopic scale. In this work, a new class of hybrid hydrogels was obtained through the sol-gel process based on the reaction between an amyloid-like octapeptide sequence [RF]4 (where R = arginine and F = phenylalanine) covalently bonded with glycin

J. Braz. Chem. Soc.. Publicado em: 2020-11

7. THEORETICAL UNDERSTANDING OF MORPHOLOGICAL DISTRIBUTION OF HYDROGEN IN AMORPHOUS CALCIUM SILICATE HYDRATE

Determining the morphological distribution of hydrogen atoms in calcium silicate hydrate phase (C-S-H) is of great concern but challenging. In this work, based on the stoichiometric composition of (CaO)1.7(SiO2)(H2O)1.8, a series of amorphous Ca1.7•Si•(O)3.7-x•(OH)2x•(H2O)1.8-x models are constructed using Monte Carlo method, where x represents the m

Quím. Nova. Publicado em: 20/07/2020

8. IMPLEMENTAÇÃO DO CAMPO DE FORÇA CLAYFF NO GROMACS: UMA APLICAÇÃO EM ESTRUTURA DE CAULINITA

Molecular dynamics techniques are increasingly being used for material science studies, being a theoretical approach based on molecular mechanics studies. GROMACS is a free software that allows the development of simulations of various types of molecules, from biological molecules to inorganic structures associated with the area of materials, requiring the s

Quím. Nova. Publicado em: 2020-06

9. Chemically Reduced Graphene Oxide on Gold Electrodes from Recordable CDs: Characterization and Potential Sensing Applications

This work presents the development and characterization of a new chemically modified electrode exploiting recordable Au-rewritable compact discs (AuCDs) as substrate for drop casting of a chemically-reduced graphene-oxide slurry focusing on simple and low-cost electrochemical sensors. Increase in electrochemical responses in cyclic voltammetric and amperomet

J. Braz. Chem. Soc.. Publicado em: 2020-03

10. Efeitos do vento solar na magnetosfera terrestre: uma abordagem didática dos cinturões de Van Allen

Resumo Neste trabalho realizamos uma abordagem didática de aspectos relacionados ao geomagnetismo e como esses aspectos podem ser influenciados pela ação do vento solar. A carência de textos didáticos que promovam explicações em termos de conceitos de física básica foi a principal motivação para esse trabalho. Iniciamos com uma discussão históri

Rev. Bras. Ensino Fís.. Publicado em: 20/01/2020

11. Vigilância da qualidade da água para consumo humano: potencialidades e limitações com relação à fluoretação segundo os trabalhadores

RESUMO Os trabalhadores da vigilância da água exercem importante papel na implementação do Programa Nacional de Vigilância da Qualidade da Água para Consumo Humano e detêm informações sugestivas do grau de estruturação e da institucionalidade das práticas no âmbito local das organizações sanitárias. O estudo objetivou descrever as potencialid

Saúde debate. Publicado em: 13/01/2020

12. SAÚDE, EDUCAÇÃO E AMAZÔNIA NA POLÍTICA DA BOA VIZINHANÇA: A TRAJETÓRIA DE ALAN FISHER NO BRASIL (1942-1945)

Resumo Após a Segunda Guerra Mundial Alan Fisher produziu imagens com o objetivo de divulgar o trabalho do recém-criado Serviço Especial de Saúde Pública (Sesp). O fotógrafo era contratado do Office of Inter-American Affairs, agência criada para dinamizar a chamada política da boa vizinhança. Mais que a captura de paisagens amazônicas, as fotografi

Rev. Hist. (São Paulo). Publicado em: 09/12/2019