vortex mixers

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Showing 1-15 of 15 results for "vortex mixers" within Papers

Assessment of the relative performance of a confined impinging jets mixer and a multi-inlet vortex mixer for curcumin nanoparticle production.

Shing Fung Chow et al.

European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 88(2), 462-471 (2014-07-16)

The relative performance of two specially designed mixers for nanoparticle production, namely, two-stream confined impinging jets with dilution mixer (CIJ-D-M) and four-stream multi-inlet vortex mixer (MIVM), was evaluated using the model compound, curcumin (CUR), under defined conditions of varying mixing

Determination of trace levels of selenium in natural water, agriculture soil and food samples by vortex assisted liquid-liquid microextraction method: Multivariate techniques.

Jamshed Ali et al.

Food chemistry, 344, 128706-128706 (2020-12-04)

A green vortex assisted based liquid-liquid microextraction (VA-LLME) method was developed for preconcentration of selenium. Ammonium pyrrolidine dithiocarbamate (APDC) was used to form a hydrophobic complex with selenium in natural water, agricultural soil and food samples by GFAAS. Whereas Triton

A simple confined impingement jets mixer for flash nanoprecipitation.

Jing Han et al.

Journal of pharmaceutical sciences, 101(10), 4018-4023 (2012-07-11)

Johnson and Prud'homme (2003. AICHE J 49:2264-2282) introduced the confined impingement jets (CIJ) mixer to prepare nanoparticles loaded with hydrophobic compounds (e.g., drugs, inks, fragrances, or pheromones) via flash nanoprecipitation (FNP). We have modified the original CIJ design to allow

Lamination and mixing in three fundamental flow sequences driven by electromagnetic body forces.

L Rossi et al.

Physical review. E, Statistical, nonlinear, and soft matter physics, 86(2 Pt 2), 026313-026313 (2012-09-26)

This article pursues the idea that the degree of striations, called lamination, could be engineered to complement stretching and to design new sequential mixers. It explores lamination and mixing in three new mixing sequences experimentally driven by electromagnetic body forces.

Mapping vortex-like hydrodynamic flow in microfluidic networks using fluorescence correlation spectroscopy.

Ke Liu et al.

Analytica chimica acta, 651(1), 85-90 (2009-09-08)

The ability to quickly measure flow parameters in microfluidic devices is critical for micro total analysis system (microTAS) applications. Macrofluidic methods to assess flow suffer from limitations that have made conventional methods unsuitable for the flow behavior profiling. Single molecule

Vortex-Assisted Modified Dispersive Liquid-Liquid Microextraction of Trace Levels of Cadmium in Surface Water and Groundwater Samples of Tharparkar, Pakistan, Optimized by Multivariate Technique.

Sooraj Nizamani et al.

Journal of AOAC International, 101(3), 858-866 (2017-09-25)

A simple vortex-assisted modified dispersive liquid-liquid microextraction procedure is proposed for the enrichment of cadmium (Cd+2) in surface (stored rainwater) and groundwater of the Tharparkar district in Pakistan, before analysis by flame atomic absorption spectrometry. Ammonium pyrrolidinedithiocarbamate was used as

Preparation of ethyl magnesium bromide for regiospecific analysis of triacylglycerols.

Yasuhiro Ando et al.

Journal of oleo science, 57(8), 459-462 (2008-07-16)

This paper presents a procedure for preparation of a Grignard reagent, ethyl magnesium bromide, used for partial deacylation of triacylglycerols (TAG) in their regiospecific analysis. Magnesium turnings were reacted with ethereal solution of bromoethane in a screw-capped test tube to

Scalable fabrication of size-controlled chitosan nanoparticles for oral delivery of insulin.

Zhiyu He et al.

Biomaterials, 130, 28-41 (2017-03-31)

Controlled delivery of protein would find diverse therapeutic applications. Formulation of protein nanoparticles by polyelectrolyte complexation between the protein and a natural polymer such as chitosan (CS) is a popular approach. However, the current method of batch-mode mixing faces significant

Organic monolith frits encased in polyether ether ketone tubing with improved durability for liquid chromatography.

Sin Young Park et al.

Journal of separation science, 38(17), 2938-2944 (2015-06-23)

This study introduces a preparation method for polymer-encased monolith frits with improved durability for liquid chromatography columns. The inner surface of the polyether ether ketone tubing is pretreated with sulfuric acid in the presence of catalysts (vanadium oxide and sodium

[The phenol turbidity test for measurement of pulmonary surfactants in amniotic fluid--rapid test for fetal lung maturity (author's transl)].

H Tatsumi et al.

Acta obstetrica et gynaecologica Japonica, 33(5), 643-650 (1981-05-01)

A simple and sensitive procedure for the quantitative estimation of pulmonary surfactants in the amniotic fluid is described. The method is based on the formation of turbidity from the amniotic fluid surfactants with phenol. Amniotic fluid drawn through an intrauterine

Simultaneous determination of organophosphorus pesticides and phthalates in baby food samples by ultrasound-vortex-assisted liquid-liquid microextraction and GC-IT/MS.

Ivan Notardonato et al.

Analytical and bioanalytical chemistry, 410(14), 3285-3296 (2018-03-20)

Baby foods are either a soft, liquid paste or an easily chewed food since babies lack developed muscles and teeth to chew effectively. Babies typically move to consuming baby food once nursing or formula is not sufficient for the child's

Operator care and eco-concerned development of a fast, facile and economical assay for basic nitrogenous drugs based on simplified ion-pair mini-scale extraction using safer solvent combined with drop-based spectrophotometry.

Samarwadee Plianwong et al.

Talanta, 98, 220-225 (2012-09-04)

A fast, facile, and economical assay for basic nitrogenous drugs has been developed based on the mini-scale extraction of the drug-dye ion pair complex combined with the use of safe-for-analyst and eco-friendlier organic extractant and drop-based micro-spectrophotometry. Instead of using

Electrokinetic mixing in electrode-embedded multiwell plates to improve the diffusion limited kinetics of biosensing platforms.

Emir Yasun et al.

Analytica chimica acta, 1106, 79-87 (2020-03-09)

Rapid and accurate biosensing with low concentrations of the analytes is usually challenged by the diffusion limited reaction kinetics. Thus, as a remedy, long incubation times or excess amounts of the reagents are employed to ensure the reactions to go

Quantitative determination of amantadine in human plasma by liquid chromatography-mass spectrometry and the application in a bioequivalence study.

Ping Wang et al.

Journal of pharmaceutical and biomedical analysis, 43(4), 1519-1525 (2006-12-13)

A sensitive liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS) method is developed and validated for rapid determination of amantadine in human plasma. Desloratadine was used as the internal standard (I.S.). Human plasma (0.2 mL) was first alkalified with 100 microL of

Determination of 11 Phthalate Esters in Beverages by Magnetic Solid-Phase Extraction Combined with High-Performance Liquid Chromatography.

Shuo Yin et al.

Journal of AOAC International, 102(5), 1624-1631 (2019-03-03)

Background: Beverages can be easily contaminated by phthalate esters (PAEs) during the production, bottling, and transportation processes. It is necessary to determine the contamination level in beverages for assessment of human exposure. Objective: In this study, magnetic solid-phase extraction (MSPE)

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