Efficiency Evaluation
Mostrando 13-24 de 1070 artigos, teses e dissertações.
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13. EVALUATION OF THE RELATIVE PROTECTION FACTOR OF ROSEMARY EXTRACT IN BIODIESEL IN THE PRESENCE OF TRANSITION METAL IONS
Biodiesel contains unsaturated methyl esters making it susceptible to oxidation reaction. Among the factors that cause oxidative instability is the contamination by transition metal ions that in small quantities catalyze the oxidation reaction. The objective of this work was to evaluate the relative protection factor of rosemary extract, in biodiesel, in the
Quím. Nova. Publicado em: 2020-09
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14. Synthesis of Glycerol-Derived 4-Alkyl-Substituted 1,2,3-Triazoles and Evaluation of Their Fungicidal, Phytotoxic, and Antiproliferative Activities
Herein, the synthesis of nine novel glycerol-derived 4-alkyl-substituted 1,2,3-triazoles, using the CuI-catalyzed alkyne-azide cycloaddition reaction as the key step, is reported. The triazoles were characterized by infrared and nuclear magnetic resonance (NMR 1H and 13C) spectroscopy and mass spectrometry. The nine prepared compounds were evaluated with reg
J. Braz. Chem. Soc.. Publicado em: 2020-04
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15. Characteristics of glucose oxidase immobilized on Magnetic Chitosan Nanoparticles
Abstract Immobilization process is used to facilitate the enzyme recovery and reusability. The aims of this study were to evaluate the effect of different amounts of chitosan on immobilization efficiency of Glucose Oxidase (GOX), pH effect on enzyme activity and changes of kinetic characteristics of enzyme immobilized on Magnetic Chitosan Nanoparticles (MCNP
Food Sci. Technol. Publicado em: 2020-03
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16. JUDD-OFELT ANALYSIS OF Tb3+ AND UPCONVERSION STUDY IN Yb3+-Tb3+ CO-DOPED CALIBO GLASSES
We report on the study of the spectroscopic properties in Ytterbium-Terbium (Yb3+-Tb3+) co-doped calcium lithium borate (CaLiBO) glasses, with the study’s focus being on the upconversion process. Intensity parameters Ωλ for CaLiBO:Tb3+ are determined by the Judd-Ofelt method to be Ω2 = 15.5 × 10-20 cm2, Ω4 = 1.90 × 10-20 cm2 and Ω6 = 3.69 × 10-20 c
Quím. Nova. Publicado em: 2020-02
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17. Does Oral Submucous Fibrosis Affect the Hearing Ability of an Individual? A Cross-Sectional Study in North Indian Population
Abstract Objective: To evaluate the hearing efficiency of Oral Submucous Fibrosis (OSF) patients using Pure Tone Audiometry (PTA) and to correlate between the hearing efficiency and clinical stage of OSF. Material and Methods: Twenty-five patients clinically diagnosed as OSF were evaluated for hearing loss using ‘PTA’. Patients were grouped as mild cas
Pesqui. Bras. Odontopediatria Clín. Integr.. Publicado em: 13/01/2020
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18. Development and optimization of erythromycin-loaded lipid-based gel by Taguchi design: In vitro characterization and antimicrobial evaluation
The foremost aim of the current research was to prolong and sustain the release of erythromycin (ERY) by preparing a solid lipid nanoparticles (SLNs)-based gel formulation for the safe and effective treatment of acne. ERY-loaded SLNs were developed, and various process variables were optimized with respect to particle size, zeta potential, and entrapment eff
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
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19. Tadalafil-loaded PLGA microspheres for pulmonary administration: preparation and evaluation
Tadalafil, a long-acting PED-5 inhibitor, is commonly used for the treatment of pulmonary arterial hypertension (PAH). However, its efficacy and clinical application are severely limited by the poor water solubility, low bioavailability and a series adverse effects (e.g. headaches, indigestion). In this study, tadalafil was prepared and loaded into biodegrad
Braz. J. Pharm. Sci.. Publicado em: 20/12/2019
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20. Associação entre eficiência alimentar e ganho em acabamento de carcaça de bovinos da raça Nelore
RESUMO Objetivou-se estimar a associação fenotípica entre a eficiência alimentar e o ganho em acabamento de carcaça de touros jovens da raça Nelore. Utilizaram-se informações de 98 touros jovens da raça Nelore, participantes de duas provas de eficiência alimentar que empregaram o sistema de cochos eletrônicos Growsafe®, as quais foram realizadas
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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21. Performance, carcass characteristics and ingestive behavior of steers fed with silages of different maize hybrids
RESUMO O objetivo deste trabalho foi avaliar desempenho, características da carcaça e comportamento ingestivo de novilhos terminados em confinamento alimentados com silagens dos híbridos de milho: Maximus VIP3, Defender VIP e Feroz VIP. O experimento teve duração de 112 dias, sendo quatro pesagens a cada 28 dias. As dietas experimentais foram formuladas
Arq. Bras. Med. Vet. Zootec.. Publicado em: 13/12/2019
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22. ENERGY AND EXERGETIC EVALUATION OF THE MULTICOMPONENT SEPARATION OF PETROCHEMICAL NAPHTHA IN FALLING FILM DISTILLATION COLUMNS
Abstract Multicomponent separation of synthetic petrochemical naphtha (hexane, cyclohexane, toluene and xylene) was carried out in a falling film distillation sequence with heat supply using a vapor chamber (thermosyphon). Tests were carried out by varying feed flow rate and temperatures of the feed and the vapor chamber in two ways of heat supply: isotherma
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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23. Evaluation of Aqueous Coffee Husks Extracts as a Corrosion Inhibitor of 1020 Carbon Steel in 1 mol L-1 HCl Solution
Corrosive processes in acidic medium reduce the performance and durability of metallic materials, causing problems to several industries. Corrosion inhibitors are commonly used to decrease these effects. As these inhibitors must be ecologically friendly currently, this work evaluated the anticorrosive effect of natural extracts of coffee husks (Coffea arabic
Mat. Res.. Publicado em: 09/12/2019
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24. Potassium leaching test in evaluation of popcorn seed vigor
Resumo: A busca por testes que ofereçam rapidez e informações seguras sobre o potencial fisiológico das sementes, torna-se de fundamental importância para programas de controle de qualidade. O objetivo deste trabalho foi avaliar a eficiência do teste de lixiviação de potássio na identificação de diferentes níveis de vigor de lotes de sementes de
J. Seed Sci.. Publicado em: 05/12/2019