Stripping
Mostrando 37-48 de 273 artigos, teses e dissertações.
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37. LASIK hipermetrópico pós-DSAEK (Descement Stripping Automated Endotelial Keratoplasty)
RESUMO O DSAEK (Descemet stripping automated endotelial Keratoplasty) é um dos procedimentos de escolha para tratamento das doenças que acometem o endotélio corneano. Apesar do sucesso terapêutico, o procedimento pode induzir uma hipermetropia residual. Em média a refração se estabiliza em um perído que varia de 6 a 12 meses após o transplante. O ob
Rev. bras.oftalmol.. Publicado em: 2016-08
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38. Electrochemical and Quantum Chemical Investigations of the Insecticide Fipronil
This work describes an electrochemical and quantum chemical investigation of the fipronil insecticide. Cyclic voltammetry (CV) and square wave voltammetry (SWV) experiments were performed over a graphite-polyurethane (GPU) composite electrode. The fipronil molecule presents an one-electron irreversible oxidation reaction. Profiting the SWV signal a square wa
J. Braz. Chem. Soc.. Publicado em: 2016-05
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39. Electroanalytical Characterization of Montelukast Sodium and Its Voltammetric Determination in Pharmaceutical Dosage Form and Biological Fluids
The electrochemical properties of montelukast sodium (MKST) at zinc oxide nanoparticles modified carbon paste electrode were investigated by cyclic voltammetry and square wave voltammetry. All studies were based on the irreversible and adsorption-controlled electrochemical reduction signal of montelukast sodium at about -0.7 vs. Ag/AgCl at pH 2.3 in methanol
J. Braz. Chem. Soc.. Publicado em: 2016-05
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40. Removal of Chromium(VI) from Industrial Effluents Through Supported Liquid Membrane Using Trioctylphosphine Oxide as a Carrier
The present study describes extraction of chromium(VI) through supported liquid membrane (SLM), Celgard 2400, which was impregnated with trioctylphosphine oxide (TOPO) dissolved in toluene. The stripping phase was comprised of diphenylcarbazide (DPC) in sulfuric acid (H2SO4) whereas the feed phase consists of potassium dichromate (K2Cr2O7) and hydrogen perox
J. Braz. Chem. Soc.. Publicado em: 2016-01
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41. CHROMIUM EXTRACTION BY MICROEMULSIONS IN TWO- AND THREE-PHASE SYSTEMS
Abstract Microemulsion systems were used to remove chromium from an aqueous solution obtained from acid digestion of tannery sludge. The systems were composed by: coconut oil soap as surfactant, 1-butanol as cosurfactant, kerosene as the oil phase, and chromium solution as the aqueous phase. Two- and three-phase microemulsion extraction methods were investig
Braz. J. Chem. Eng.. Publicado em: 2015-12
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42. Polytetrafluorethylene Membrane-Based Liquid Three-Phase Micro Extraction Combined with
in situ Differential Pulse Anodic Stripping Voltammetry for the Determination of Cadmium Ions Using Au-Nanoparticles Sol-Gel Modified Pt-WireIn this study, one particular application of in situ pulse anodic stripping voltammetry and polytetrafluoroethylene membrane-based liquid three-phase micro extraction is presented for the micro extraction and quantification of cadmium(II) ions in trace levels. The main factors influencing on preconcentration and micro extraction of cadmium ions
J. Braz. Chem. Soc.. Publicado em: 2015-07
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43. Distal spermatic cord peritoneal stripping: an adjunct technique during inguinal orchiopexy
Int. braz j urol.. Publicado em: 2015-06
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44. Recovery Process Development for the Rare Earths from Permanent Magnet Scraps Leach Liquors
The current study deals with the recovery process development for the rare earths (REs), i.e., dysprosium (Dy) and neodymium (Nd), metals from permanent magnet scraps leach liquors. Its main objective is the recovery of the rare earths (Dy and Nd) from permanent magnet scraps (PMSs). Introdutory experiments were carried out to get leach liquor solution: oxid
J. Braz. Chem. Soc.. Publicado em: 2015-06
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45. A study of parameters affecting the solvent extraction of lactic acid from fermentation broth
Lactic acid has recently been drawing much interest as a raw material for biodegradable polymer. One of the promising technologies for recovery of lactic acid from fermentation broth is reactive liquid - liquid extraction. Equilibrium studies on the reactive extraction of lactic acid with trioctylamine (TOA) in various organic phases and its re-extraction in
Braz. J. Chem. Eng.. Publicado em: 2014-09
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46. Electrochemical reduction and stripping voltammetric determination of the anti-glaucoma drug levobunolol HCl in formulation and human serum at the mercury electrode
Levobunolol HCl é um agente bloqueador ß-adrenoceptor potente e não seletivo usado no tratamento tópico de pressão intraocular aumentada em pacientes com glaucoma de ângulo aberto crônico ou hipertensão ocular. Um método voltamétrico de onda quadrada e redissolução catódico adsortivo (SW-AdCSV) preciso, rápido e sem extração foi descrito para
J. Braz. Chem. Soc.. Publicado em: 2014-08
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47. Electrochemical studies of olmesartan medoxomil and its detection in pharmaceutical dosage forms and biological fluids by cathodic adsorptive stripping voltammetric method
As propriedades eletroquímicas da olmesartana (OLME) foram investigadas por voltametria cíclia (CV) e voltametria de pulso diferencial (DPV) em eletrodo de gota pendente de mercúrio (HMDE). Todos os estudos foram baseados no sinal de redução eletroquímica de OLME irreversível e controlada pela adsorção em aproximadamente -1,2 e -1,5 V vs. Ag/AgCl em
J. Braz. Chem. Soc.. Publicado em: 2014-05
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48. In vivo Descemet stripping automated endothelial keratoplasty ultrafina com laser de femtosegundo de baixa energia e alta frequência
Este relato de caso mostra a confecção de uma lamela corneana doadora endotelial ultrafina com o uso de um laser de femtosegundo de baixa energia e alta taxa de repetição, e sua utilização in vivo em um paciente com ceratopatia bolhosa do pseudofácico. O resultado final foi observado quanto a evolução da espessura da lamela endotelial doadora e de t
Arq. Bras. Oftalmol.. Publicado em: 2014-04