A5027723930- Agricultural and Food Sciences
- Natural Fiber Reinforced Composites
- Lubricants and Their Additives
- Advanced Cellulose Research Studies
- Biodiesel Production and Applications
- Bee Products Chemical Analysis
- Adsorption and biosorption for pollutant removal
- Ginkgo biloba and Cashew Applications
- Male Reproductive Health Studies
- Essential Oils and Antimicrobial Activity
- Traditional and Medicinal Uses of Annonaceae
- Phytochemistry Medicinal Plant Applications
- Moringa oleifera research and applications
- Microplastics and Plastic Pollution
- Ruminant Nutrition and Digestive Physiology
- Insect Pest Control Strategies
- Seed Germination and Physiology
- Indigenous Health and Education
- ECG Monitoring and Analysis
- Catalysis for Biomass Conversion
- Melamine detection and toxicity
- Adsorption, diffusion, and thermodynamic properties of materials
- Selenium in Biological Systems
- Reproductive Physiology in Livestock
- Meat and Animal Product Quality
Universidade Federal do Piauí
2014-2025
Universidade de Brasília
2022
Universidade Federal do Maranhão
2022
Universidade Federal de Lavras
2009
Abstract Bovine semen cryopreservation is a fundamental procedure in animal reproduction. However, it associated with the production of reactive oxygen species (ROS), which can cause significant damage to spermatozoa, leading infertility and reduced sperm quality. In this context, using seminal diluents enriched antioxidants presents promising strategy for minimizing or even reversing these harmful effects. This study aimed evaluate effects different concentrations pequi (Caryocar coriaceum)...
Resumo A criopreservação de sêmen bovino é um procedimento fundamental na reprodução animal, mas está associada à produção espécies reativas oxigênio (ROS), que podem causar danos significativos aos espermatozoides. Esses estão relacionados infertilidade e diminuição da qualidade espermática. Nesse contexto, a utilização diluidores seminais enriquecidos com antioxidantes representa uma estratégia promissora para minimizar ou até reverter esses efeitos deletérios. O objetivo desse estudo foi...
Vegetable fibers are widely used as reinforcement in the production of composites. In this work, photodegradative potential polymer composites containing babassu fiber was characterized and evaluated. The were extracted manually immersed a 10% NaOH solution (Mercerization). After drying, they crushed incorporated into low-density polyethylene matrix proportions 5%, 10%, 20% total mass composite. subjected to Scanning Electron Microscopy analysis (showed incorporation polymeric matrix),...
Melamine is a key compound used as clarifying agent for waste lubricating oil primarily due to its excellent adsorbent properties. Moreover, considerable interest exists the further modification of melamine in order provide remediation with improved clarification capacity. In this study, hexamethylolmelamine was prepared using solution formaldehyde, which provided an capable incorporation into silicate polymer framework. Subsequently, resultant monomer added produce melamine-silica polymer....
Hyptis marrubioides Epling (hortelã-do-campo) é espécie de uso medicinal conhecida pelas suas atividades contra infecções gastrointestinais, pele, dores e câimbras. Objetivou-se com este trabalho, avaliar o teor composição química do óleo essencial H. em diferentes genótipos (roxo branco) partes da planta fresca (folhas, inflorescências caule). Os estudados foram identificados através das plantas que apresentam coloração roxa branca. O delineamento experimental foi inteiramente casualizado,...
Abstract In this work, the corrosion protection of 316L steel was promoted by an electro‐synthesized polymer obtained from technical cashew nutshell liquid (t‐CNSL). Spectroscopic techniques confirmed formation. The dispersed in ethyl acetate solvent and used to form coatings on substrates. coated samples were subjected electrochemical tests a saline environment. electrode with poly(t‐CNSL) exposed corrosive medium for 24 days, superior observed compared uncoated sample. open circuit...
The objective of this work was to obtain the physico-chemical characteristics and evaluate degradation polymeric composites produced from fiber obtained babassu palm tree (Attalea speciosa).Babassu stem fibers treated by mercerization were used composites.The for preparation polymer in proportions 5%, 10%, 20% a high-density polyethylene matrix.Polymeric composites, characterized FTIR, XRD, TG/ DTG, SEM, AC impedance traction test.Traction tests revealed that at high concentration 20%,...
Neste trabalho foi proposta a caracterização química da fibra retirada partir do caule palmeira de babaçu. Estudos sobre o efeito tratamento químico superficial e teor dos principais componentes químicos presentes também foram realizados. Após obtenção babaçu na forma natural mercerizada, as amostras submetidas às análises FTIR, SEM, XDR TG/DTG . Os resultados mostraram eficiência processo utilizado, revelando que apresentou uma melhor propriedade físico-química. A remoção parcial amorfos...
Este trabalho objetivou desenvolver um compósito a base de celulose, melamina e sílica. A celulose foi obtida dos resíduos poda da Mangifera indica para o tratamento primário quimicamente assistido efluentes indústria têxtil. O caracterizado por FT-IR, MEV, MET, TG-DTG Potencial Zeta. planejamento composto central aplicado otimização massa tempo contato na remoção azul metileno. FT-IR mostrou que apresentou banda em 815 cm-1. MEV MET revelaram superfície do há Nitrogênio melamina, Silício...
Introdução: Estudos prévios têm reportado para o buriti (Mauritia flexuosa L. f.), fruto típico do cerrado brasileiro e fonte alimentar importante as populações de baixa renda, uma composição rica em carotenoides, polifenóis, ácidos graxos monoinsaturados ácido ascórbico. No entanto, estudos sobre os efeitos biológicos decorrentes consumo desse são escassos. Objetivo: Avaliar da suplementação com funções renal hepática ratos crescimento. Métodos: As determinações centesimal, teor...
Antioxidants are crucial in the food and biofuel industries, there is growing interest developing natural alternatives to synthetic antioxidants. This study evaluates vitro vivo antioxidant activity of ETBL. The capacity was measured using DPPH method observed against lipid peroxidation. Toxicity tests with Artemia salina L. acute toxicity were also conducted. ETBL showed significant radical more effective than rutin (a antioxidant) at concentrations 25, 50, 100, 200 µg/mL. It exhibited...
The heart fatty acid-binding protein (HFABP) gene was sequenced in parental animals of a F2 crossing boars the Brazilian native Piau breed with commercial sows (Landrace x Large White Pietrain). Primers used for PCR were designed to amplify four exons gene. products and compared GenBank sequences. Differences between generated sequences observed both genetic groups. A total 246 genotyped using Hinf I restriction enzyme. Two genotypes identified, 198 being HH 48 Hh. SNP significantly...
The development of human activities in the industrial and transportat sectors has increased contamination water bodies by release used contaminated lubricating oils (OLUC). To contain such contaminations, process re-refining OLUC been worldwide to recover base oil. Based on literature, this using extraction adsorption steps is effective, low cost, making product able enter production chain again. So, review highlights recovery oil, from with solvent adsorbent materials characterizations new...
A energia é considerada questão estratégica de um páis e a proporção seu uso sempre esteve diretamente associada ao desenvolvimento industrial. Com descoberta do petróleo no início século XIX, foi intensificado ainda mais o processo industrialização, provocando uma intensa modificação espaço ocupado pelo homem. Mas escassez iminente, geração por meio combustíveis fósseis, como petróleo, não pode fornecer indefinidamente exigida pela população mundial. Nesse contexto, biodiesel surge...
Abstract Clay is a material that exhibits excellent adsorbent properties which can be applied for the clarification of used motor oils. We describe comparative analysis between natural and chemically-modified clays as an environmentally sound method clarification. Previously, sample clay was chemically treated with KOH H2SO4 concentration 2.0 M at 150 °C. Both chemically-treated samples were characterized using techniques XRD, FTIR, SSA, thermal to observe structural change after chemical...
This study evaluated the effect of increasing nutritional plane in finishing diets on meat quality traits culled adult goats. Forty-one crossbred does were divided into four groups: baseline diet formulated to meet 100% requirements (BD); BD + 30% (BD30); 60% (BD60); 90% (BD90) level BD. The goats received experimental for 28 days. protein profile longissimus lumborum muscle was using 1D SDS–PAGE and mass spectrometry. Cholesterol albumin concentrations highest group. There no alterations...
Abstract Funding Acknowledgements Type of funding sources: None. Introduction Electrocardiogram (ECG) is the most performed cardiovascular tool in medicine(1). First described by Einthoven at beginning 20th century, it now a useful, cheap and safe exam, accessible to millions people on devices as light smartwatches. Several studies have demonstrated variability ECG interpretation. A recent systematic review low median accuracy 54%, across different training levels (from students experimented...