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Stability and Aggregation of Metal Oxide Nanoparticles in Natural Aqueous Matrices
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2018-08-31 10:11 651閱讀次數(shù)
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StabilityandAggregationofMetalOxideNanoparticlesinNaturalAqueousMatrices
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Stability and Aggregation of Metal Oxide Nanoparticles in Natural Aqueous Matrices- StabilityandAggregationofMetalOxideNanoparticlesinNaturalAqueousMatrices[詳細]
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2018-08-31 10:11
產(chǎn)品樣冊
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- Stability and Aggregation of Metal Oxide Nanoparticl
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2014-09-10 00:00
專利
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- Metal Oxide Nanoparticles Induce Unique Inflammatory
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2024-09-28 00:04
課件
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- Characterization of stability, aggregation, and equilibrium properties of modified natural products
- Unstablebiopolymersolutionsinevitablyleadtomis-characterizationofmacromolecularpropertiesandirreproducibleresults.Evenunderstableorquasi-stableconditions,persistentaggregatescanhamperreliablecharacterization,especiallyusinglightscatteringmethods.Variouspitfallsincharacterizingbiopolymerswereworkedthrough,includingdeterminationofsolutionstabilityzones,dissolutionkinetics,estimationoffractionofaggregatepopulations,andtherelationshipbetweenbatchandfractionationmethods.Chitosans,polyampholyticbiopolymerswithisoelectricpointaroundpH=6.0,withvaryingdegreesofcarboxymethylationwerestudied.Instabilitywasdeterminedvs.pHandionicstrengthusingahighthroughputscreeningmethod,simultaneousmultiplesamplelightscattering(SMSLS).Withstablesolutionconditionsdetermined,equilibriumbatchandmulti-detectorGPCcharacterizationofmolecularweight,intrinsicviscosity,andpolyelectrolytepropertieswasmade.Finally,afirstattemptatcontinuousonlinemonitoringofthemodificationreactionitselfwasmadeandcomparedtoFTIRanalysisofcarboxymethylationondiscretealiquots.Giventherangeofpossiblecharacterizationproblems,multipleapproacheswithindependentinstrumentsmayberequiredforreliablenaturalproductcharacterization.Onlinemonitoringofmodificationreactionsmayleadtorapidadvancesinunderstandingandpreparationofnaturalproducts.[詳細]
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2018-08-31 10:11
產(chǎn)品樣冊
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- Characterization of stability, aggregation, and equilibrium properties of modified natural products;
- Unstablebiopolymersolutionsinevitablyleadtomis-characterizationofmacromolecularpropertiesandirreproducibleresults.Evenunderstableorquasi-stableconditions,persistentaggregatescanhamperreliablecharacterization,especiallyusinglightscatteringmethods.Variouspitfallsincharacterizingbiopolymerswereworkedthrough,includingdeterminationofsolutionstabilityzones,dissolutionkinetics,estimationoffractionofaggregatepopulations,andtherelationshipbetweenbatchandfractionationmethods.Chitosans,polyampholyticbiopolymerswithisoelectricpointaroundpH=6.0,withvaryingdegreesofcarboxymethylationwerestudied.Instabilitywasdeterminedvs.pHandionicstrengthusingahighthroughputscreeningmethod,simultaneousmultiplesamplelightscattering(SMSLS).Withstablesolutionconditionsdetermined,equilibriumbatchandmulti-detectorGPCcharacterizationofmolecularweight,intrinsicviscosity,andpolyelectrolytepropertieswasmade.Finally,afirstattemptatcontinuousonlinemonitoringofthemodificationreactionitselfwasmadeandcomparedtoFTIRanalysisofcarboxymethylationondiscretealiquots.Giventherangeofpossiblecharacterizationproblems,multipleapproacheswithindependentinstrumentsmayberequiredforreliablenaturalproductcharacterization.Onlinemonitoringofmodificationreactionsmayleadtorapidadvancesinunderstandingandpreparationofnaturalproducts.[詳細]
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2018-08-31 10:11
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- Discrimina ion of Storage Time for Pork Using Metal Oxide Semiconductor （MOS）-Type E-Nose
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2018-08-16 10:00
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- Cytotoxicity of aluminum oxide nanoparticles on Allium cepa root tipeffects of oxidative stress gen
- ThecommercialusageofAl2O3nanoparticles(Al2O3NPs)hasgoneupsignificantlyintherecenttimes,enhancingtheriskofenvironmentalcontaminationwiththeseagentsandtheirconsequentadverseeffectsonlivingsystems.ThecurrentstudyhasbeendesignedtoevaluatethecytogeneticpotentialofAl2O3NPsinAlliumcepa(roottipcells)atarangeofexposureconcentrations(0.01,0.1,1,10,and100μg/mL),theiruptake/internalizationprofile,andtheoxidativestressgenerated.Wenotedadose-dependentdecreaseinthemitoticindex(42to28%)andanincreaseinthenumberofchromosomalaberrations.Variouschromosomalaberrations,e.g.sticky,multipolarandlaggardchromosomes,chromosomalbreaks,andtheformationofbinucleatecells,wereobservedbyoptical,fluorescence,andconfocallaserscanningmicroscopy.FT-IRanalysisdemonstratedthesurfacechemicalinteractionbetweenthenanoparticlesandroottipcells.ThebiouptakeofAl2O3inparticulateformledtoreactiveoxygenspeciesgeneration,whichinturnprobablycontributedtotheinductionofchromosomalaberrations.[詳細]
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2015-06-02 00:00
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期刊論文
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