Propylene Glycol
Mostrando 25-36 de 76 artigos, teses e dissertações.
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25. Speciation of antimony (III) and antimony (V) using hydride generation for meglumine antimoniate pharmaceutical formulationsquality control
The pentavalent antimonies, mainly the meglumine antimoniate, are recommends as first-choice medicines for leishmaniasis therapy. In this work we described the development of formulations of meglumine antimoniate injectable medication, as well as the analytical methodology used in the selective determination of Sb(III) and Sb(Total) by hydride generation - i
Memórias do Instituto Oswaldo Cruz. Publicado em: 2008-03
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26. Síntese e caracterização de dispersões aquosas de poliuretanos à base de copolímeros em bloco de poli(glicol etilênico) e poli(glicol propilênico)
Non-polluting polyurethane aqueous dispersions, with 40% of solids content, were synthesized based on block copolymers of poly(ethylene glycol) and poly(propylene glycol) (PEG-b-PPG), with PEG hydrophilic segments content of 7 and 25%, poly(propylene glycol) (PPG), dimethylolpropionic acid (DMPA), isophorone diisocyanate (IPDI), and hydrazine. Different form
Química Nova. Publicado em: 2008
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27. In vivo and in vitro study of an antibiotic root canal filling material used in endodontic treatment of primary teeth / Avaliação in vitro e in vivo de uma pasta antibiótica empregada no tratamento endodôntico de dentes decíduos
The aim of these "in vitro" and "in vivo" studies was to evaluate an endodontic treatment for deciduous teeth, minimally invasive, using the CTZ paste (chloramphenicol, tetracycline and zinc oxide/eugenol). In the "in vitro" study the antimicrobial activity of the CTZ paste on standard microorganisms (E.coli , S.aureus, S.mutans, E.faecalis and P.aeruginosa)
Publicado em: 2008
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28. Estudo do efeito da adição de poli(glicol etilênico-b-glicol propilênico) na formação de dispersões aquosas poliuretânicas à base de poli(glicol propilênico) / Study of the effect of the copolymer poly(ethylene glycol-co-propylene glycol) addition on the polyurethane based poly(propylene glycol) aqueous dispersions formation
Non-polluting and poly(urethane-urea) aqueous dispersions based on poly(propylene glycol) (PPG) and block copolymers of poly(ethylene glycol-b-propylene glycol) (EG-b-PG) containing 7% of ethylene glycol repeating units, were produced in an innovative way. The poly(urethane-urea)s were prepared, in two steps, by the prepolymer method. In the first step, anio
Publicado em: 2007
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29. Desviaciones al modelo logarítmico-lineal en la solubilidad de ibuprofén y naproxén en mezclas cosolventes propilenoglicol-agua
The deviations observed in the solubility of ibuprofen (IBP) and naproxen (NAP) in propylene glycol (PG) + water (W) cosolvent mixtures with respect to the logarithmic-linear model proposed by Yalkowsky have been analyzed at 25.00 ± 0.05 ºC. Negative deviations were obtained in all cosolvent compositions for both drugs; they were greater for IBP. Another t
Química Nova. Publicado em: 2007
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30. Experimental evaluation of the continuous pasteurization control of a orange juice model fluid / Avaliação experimental do controle da pasteurização continua de um fluido modelo de suco de laranja
The goal of this work was the building, instrumentation and implementation of conventional and non-conventional controllers in a HTST (Hight Temperature Short Time) continuous processing prototype of fruit juice. A plate heat exchange with three sections of heat exchange (regeneration, heating and cooling) and a holding tube were used to achieve a holding ti
Publicado em: 2007
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31. Efeito da Mitomicina C intratimpÃnica no desenvolvimento do colesteatona e da otite mÃdia em ratos
O colesteatoma da orelha mÃdia à uma doenÃa inflamatÃria crÃnica associada muitas vezes à destruiÃÃo do osso temporal. Hà bastante tempo à conhecida a possibilidade de induÃÃo de colesteatomas pela introduÃÃo de certos agentes irritantes na orelha mÃdia, como misturas de talco e fibrina ou quinino. O propilenoglicol foi, recentemente, consider
Publicado em: 2007
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32. Comparative study of CdTe sources used for deposition of CdTe thin films by close spaced sublimation technique
Unlike other thin film deposition techniques, close spaced sublimation (CSS) requires a short source-substrate distance. The kind of source used in this technique strongly affects the control of the deposition parameters, especially the deposition rate. When depositing CdTe thin films by CSS, the most common CdTe sources are: single-crystal or polycrystallin
Materials Research. Publicado em: 2006-03
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33. Thermodynamic study of the solubility of acetaminophen in propylene glycol + water cosolvent mixtures
Baseado nas equações de van't Hoff e Gibbs, as funções termodinâmicas energia de Gibbs, entalpia e entropia de solução, mistura e solvatação de acetaminofen em misturas dos solventes propileno glicol + água (PG + W), foram avaliadas por medidas de solubilidade em diversas temperaturas. A solubilidade foi maior para 100% de PG em todas as temperatur
Journal of the Brazilian Chemical Society. Publicado em: 2006-02
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34. Estudo Viscosimétrico de Soluções de Pré-Polímeros Uretânicos à Base de Poli(Glicol Propilênico) e Diisocianato de Isoforona. / Viscometric study of urethanic prepolymers based on poly(propylene glycol) and isophorone diisocyanate.
Neste estudo, o comportamento em solução diluída de pré-polímeros uretânicos à base de poli(glicol propilênico) (PPG) e diisocianato de isoforona (IPDI) foi avaliado por medidas viscosimétricas a 30 C em dois tipos de solventes, com diferentes polaridades: isopropanol e tolueno. Os pré-polímeros foram sintetizados em massa, ou seja, na aus
Publicado em: 2006
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35. Adesivos poliuretanicos derivados de PET reciclado : sintese, caracterização e aplicação
In Brazil, the production and recycling index of poly(ethylene terephthalate) -PET have been increased. Therefore it is necessary to increase the possibilities for utilizing this polymer waste. This work aims the chemical recycling as a way to obtain value added products from PET waste. Postconsumer PET bottles were first depolymerized by glycolysis with die
Publicado em: 2004
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36. Dose-related effects of propericiazine in rats
We evaluated the effects of the neuroleptic agent propericiazine on animal models of anxiety and memory. Adult male Wistar rats (250 to 350 g) received intraperitoneal injections of propericiazine (0.05, 0.075 and 0.1 mg/kg), diazepam (1 mg/kg), saline, or diazepam vehicle (20% propylene glycol and 80% saline) 30 min prior to the experimental procedure. Anim
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-02