Hydrodynamic Stability
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Chitosan-Sodium Alginate Polyelectrolyte Complex Coating Pluronic® F127 Nanoparticles Loaded with Citronella Essential Oil
Pluronic® F127 nanoparticles were loaded with citronella essential oil (CEO) and then covered with chitosan-sodium alginate polyelectrolyte complex (PEC). The system was characterized according to size, zeta potential and stability over time. Dynamic light scattering (DLS) in different proportions of water/ethanol as a dispersive medium was important in con
J. Braz. Chem. Soc.. Publicado em: 2020-04
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2. Development, characterization and stability of microemulsionated formulations of bacaba, Oenocarpus bacaba oil
RESUMO Os avanços no âmbito da nanotecnologia, aliados ao uso de produtos naturais, representam uma área promissora de pesquisa. O Brasil é um país de rica biodiversidade, especialmente na floresta amazônica. Frutos utilizados comumente nas comunidades locais, como a bacaba (Oenocarpus bacaba), são potencialmente interessantes para prospecção de apl
Acta Amaz.. Publicado em: 12/08/2019
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3. Studies of the Colloidal Properties of Superparamagnetic Iron Oxide Nanoparticles Functionalized with Platinum Complexes in Aqueous and PBS Buffer Media
This work has focused on the synthesis of three nanosystems composed of superparamagnetic iron oxide nanoparticles (SPIONs) coated either with a carboxylate platinum(IV) complex (PD = cis,cis,trans-[Pt(NH3)2Cl2(HOOCCH2CH2COO)(OH)]) or with platinum(II) complex functionalized dextrans (DexPt1 = [Pt(Dex-NH2)Cl3] and DexPt2 = [Pt(Dex-NH2)(NH3)2(H2O)]). All nano
J. Braz. Chem. Soc.. Publicado em: 2017-05
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4. Study of Thermal Degradation of PLGA, PLGA Nanospheres and PLGA/Maghemite Superparamagnetic Nanospheres
Poly(glycolide-co-lactide) (PLGA) nanospheres containing magnetic materials have been extensively studied because of its biomedical applications. Therefore, it is very important to know thermal properties of these materials in addition to other physical properties. Thermal degradation activation energy (Eα) of PLGA nanospheres with maghemite entrapment (PLG
Mat. Res.. Publicado em: 24/11/2015
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5. Evaluation of flow rate accuracy and pressure measurements of testing rig for neurological valve hydrodynamic tests
INTRODUCTION: Increased production and disorders in the circulation or absorption of cerebrospinal fluid (CSF) leads to increased intracranial pressure and causes a condition called hydrocephalus. The most common treatment for this disorder is the implantation of a ventricle-peritoneal shunt, which consists of the insertion of a ventricular catheter in the c
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-03
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6. Stability-indicating comparative methods using mekc and lc for determination of olmesartan medoxomil
A stability-indicating method using MEKC was validated for the analysis of olmesartan medoxomil in tablets. Successful separation was achieved using a fused silica capillary (40 cm x 50 µm i.d.); background electrolyte consisted of a combination of 10 mmol L-1 borate buffer and 5 mmol L-1 anionic detergent sodium dodecyl sulfate (95:5; v/v) pH 6.5; hydrodyn
Quím. Nova. Publicado em: 2013
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7. Succinato de ródio (II): síntese, caracterização e adsorção em nanopartículas de maghemita / Rhodium (II) succinate: synthesis, caracterization and adsorption on maghemite nanoparticles
In this work it was described the synthesis and characterization of rhodium(II) succinate complex unpublished and adsorption study in maghemite nanoparticles. The rhodium(II) succinate was synthesized from a precursor rhodium(II) carboxylate, rhodium(II) trifluoracetate with a yield of 48.2%. The complex has become completely soluble in aqueous medium only w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2012
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8. Desenvolvimento de processo microfluídico para incorporação de DNA em lipossomas catiônicos destinados a terapia e vacinação gênica = : Development of microfluidic process for DNA incorporation into cationic liposomes for gene therapy and vaccination / Development of microfluidic process for DNA incorporation into cationic liposomes for gene therapy and vaccination
This research aimed at the technological development of microfluidic process for nonviral carriers production based on the electrostatic complexation between cationic liposomes (CL) and plasmidal DNA (pDNA) for gene and vaccine therapy applications. The development of this process was compared to the conventional bulk process, in which the solutions are mixe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2012
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9. Investigação experimental e analítica do escoamento ao redor de cilindro circular com supressores de VIV. / Experimental and analytical investigation of the flow around circular cylinder with VIV suppressors.
The fluid flow around bluff bodies is one of the main problems in fluid mechanics. The investigations of this phenomenon are based on analytical, numerical and experimental techniques. Each technique presents advantages and disadvantages, being impossible the comprehensive characterization of the flow though only one technique for the majority of body geomet
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2011
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10. Extração e estudo do polissacarideo soluvel de soja e sua avaliação na estabilidade e reologia de suco de gaviola adicionado de isolado proteico de soja / Extraction and study of soybean soluble polysaccharide and its evaluation on the stability and rheology of soursop juice containing soy protein isolate
Soy based drinks are quite susceptible to sedimentation due the presence of proteins and low pH, requiring addition of food gums to stabilize them. The functional properties of soybean soluble polysaccharide can vary depending on the temperature of extraction and way of drying (freeze or spray dried) of this macromolecule. Moreover, its use as a protein stab
Publicado em: 2009
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11. Synthesis, characterization of biocompatibility and evaluation of bioadhesion of n-carboxymethylchitosan nanoparticles in hybrid networks with poliacrylic acid / Síntese, caracterização e avaliação da biocompatibilidade e bioadesão de nanopartículas de n-carboximetilquitosana em redes híbridas com ácido poliacrílico
Chitosan nanoparticle complexes with polyacrylic acid have been used in nanotechnology, as they improve pharmacological activity, in chemical and biological terms, and in particular, increase drug bioavailability. The aim of this work is to evaluate the biocompatibility and bioadhesion of N-carboxymethyl derivatives of chitosan (N-CMC) with in situ polymeriz
Publicado em: 2009
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12. Avaliação comparativa das propriedades hidrodinâmicas de xantanas produzidas pelo pv Pruni e Clairana / Comparative evaluation of hydrodynamic properties of the xanthan produced by pv Pruni and Clairana
The knowledge on the biopolymers properties are important to predict his future industrial applications because reflects his chemical primary structure. Besides, the physical and chemical characteristics of the biopolymers are a consequence of the process used in his synthesis. The aim of this work was the study of the hydrodynamic properties of solution of
Publicado em: 2008