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Mostrando 13-24 de 225 artigos, teses e dissertações.
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13. L5-S1 SURVIVAL AFTER INTERBODY FUSION BY LATERAL APPROACH UNTIL L5 IN DEGENERATIVE DISEASE
RESUMO Objetivos: Incluir ou não o nível L5-S1 nas artrodeses lombares de múltiplos níveis ainda não é consenso na literatura. A opção de preservar L5S1 mantem o segmento móvel e a possibilidade de um ajuste natural ao alinhamento sagital da coluna lombar artrodesada. Porém, uma fusão longa acima de L5S1 pode acelerar seu processo degerativo e um
Coluna/Columna. Publicado em: 01/06/2019
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14. HPLC-PDA method validated for the determination of hibalactone in Hydrocotyle umbellata subterraneous parts and its ultrasound-assisted extraction optimization
ABSTRACT In this work, we developed and validated a HPLC-PDA method for the quantification of hibalactone in Hydrocotyle umbellata L., Araliaceae, subterraneous parts extracts and optimized its ultrasound-assisted extraction. Chromatographic separations were carried out with an isocratic mobile phase of acetonitrile/methanol/water (10:65:25), a flow of 0.8 m
Rev. bras. farmacogn.. Publicado em: 27/05/2019
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15. Rapid quantitative analysis of six flavonoids in licorice by ultra-performance convergence chromatography
Abstract Objective This study was to establish a rapid quantitative method for determination of six characteristic flavonoids, including licochalcone A (1), liquiritigenin (2), glabridin (3), isoliquiritigenin (4), liquiritoside (5), and isoliquiritoside (6) in licorice by a ultra-performance convergence chromatography (UPC2) apparatus equipped with a phot
Food Sci. Technol. Publicado em: 11/04/2019
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16. Developed and validated stability indicating HPLC method for the determination of epirubicin in bulk drug, marketed injection and polymeric nanoparticles
Present work is aimed to develop a simple, sensitive, robust and reliable HPLC method for routine quality control of epirubicin (EPI) in bulk drug, marketed injections and polymeric nanoparticles. Separation was carried out by C18 column. Isocratic elution was carried out using mobile phase A: 0.16% o-phosphoric acid solution, B: acetonitrile and methanol mi
Braz. J. Pharm. Sci.. Publicado em: 08/04/2019
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17. Topographic modelling using UAVs compared with traditional survey methods in mining
Abstract The current developments with unmanned aerial vehicles (‘UAVs’) are revolutionizing many fields in civil applications, such as agriculture, environmental and visual inspections. The mining industry can also benefit from UAVs in many aspects, and the reconciliation through topographic control is an example. In comparison with traditional topograp
REM, Int. Eng. J.. Publicado em: 2018-07
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18. Some triterpenic compounds in extracts of Cecropia and Bauhinia species for different sampling years
ABSTRACT The aim of this paper is to provide an overview on the chemical composition of triterpenes in widespread used folk medicine species, through the development and validation of eleven compounds using HPLC-UV detection. The compounds were separated using isocratic elution, on a reverse phase column (Kinetex C18, 250 mm × 4.6 mm, 5 µm) with mobile pha
Rev. bras. farmacogn.. Publicado em: 2018-01
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19. Development and validation of a stability indicating HPLC method to determine diltiazem hydrochloride in tablets and compounded capsules
ABSTRACT A stability indicating HPLC method to determine diltiazem hydrochloride (DTZ) in tablets and compounded capsules was developed and validated according to Brazilian and the International Conference on Harmonization (ICH) guidelines. The separation was carried out on a Purospher Star® C18 (150 x 4.6 mm i.d., 5 µm particle size, Merck Millipore) anal
Braz. J. Pharm. Sci.. Publicado em: 31/07/2017
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20. An innovative, simple, fast, and less toxic high-performance liquid chromatographic method for determination of prednisone in capsules
ABSTRACT Prednisone is an anti-inflammatory steroid drug widely used in clinical practice. However, no high-performance liquid chromatographic (HPLC) method has been described in the literature for the determination of prednisone in capsules until now. Thus, an HPLC method was developed using a C18 (250x4.0, 5 µm) column, with methanol:water (70:30) as mobi
Braz. J. Pharm. Sci.. Publicado em: 22/06/2017
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21. Development and validation of an analytical method using High Performance Liquid Chromatography (HPLC) to determine ethyl butylacetylaminopropionate in topical repellent formulations
ABSTRACT Diseases caused by insects are frequent in poor countries, leading to epidemic scenarios in urban areas; e.g., Dengue, Zika and Chikungunya. For this reason, the development of a safe and efficient topical formulation is essential. Ethyl butylacetylaminopropionate (EB) is a mosquito repellent developed by Merck, which is used in products for adults,
Braz. J. Pharm. Sci.. Publicado em: 22/06/2017
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22. Optically controlled reconfigurable antenna for 5G future broadband cellular communication networks
Abstract This paper presents an optically controlled reconfigurable antenna for millimetre-wave frequency range. Silicon switches are used to control the optical reconfiguration, modifying the frequency response and radiation pattern of the antenna design. Therefore, the system can switch between the lightly licensed 28 GHz and 38 GHz frequency bands, useful
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
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23. A validated and densitometric HPTLC method for the simultaneous quantification of reserpine and ajmalicine in Rauvolfia serpentina and Rauvolfia tetraphylla
ABSTRACT High performance thin layer chromatographic method (HPTLC) has been developed for the quantification of reserpine and ajmalicine in root part of two different population of Rauvolfia serpentina (L.) Benth. ex Kurz and Rauvolfia tetraphylla L., Apocynaceae, collected from Punjab and Uttarakhand. HPTLC of methanolic extract of root containing indole a
Rev. bras. farmacogn.. Publicado em: 2016-10
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24. Stability-indicating RP-LC method for quantification of fusidic acid in cream
ABSTRACT Fusidic acid is an antibiotic steroid indicated for the treatment of infections caused by the genus Staphylococcus, including methicillin resistant Staphylococcus aureus strains, and other Gram-positive bacteria. In the present study, a stability-indicating reversed-phase liquid chromatography (RP-LC) method was developed and validated for the deter
Braz. J. Pharm. Sci.. Publicado em: 2016-09