Results 31 to 40 of about 9,925,712 (237)

Water-dispersible colloids distribution along an alluvial fan transect in hyper-arid Atacama Desert

open access: yesGeoderma, 2023
As located in one of the oldest and driest deserts on Earth, soils in the Atacama Desert are greatly affected by atmospheric dust deposited on soil surface and the related fate of water-dispersible colloids (WDCs,
Xiaolei Sun   +9 more
doaj   +1 more source

Increasing the resolution of field flow fractionation with increasing crossflow gradients [PDF]

open access: yes, 2023
The resolution of flow field flow fractionation (flow FFF) depends primarily on the crossflow rate and its change over time. In this work we demonstrate a method for modulation of the crossflow rate during separation increases the peak-to-peak resolution
George, Bou-Assaf, Nicholas, Larson
core   +1 more source

Dealing with the complexity of conjugated and self‐assembled polymer‐nanostructures using field‐flow fractionation

open access: yesAnalytical Science Advances, 2021
Broad diversity and heterogeneity are inherently showcased by both natural and synthetic macromolecular structures. The high application potential for such structures and their combinations calls for novel analytical approaches that allow for ...
Upenyu L. Muza   +2 more
doaj   +1 more source

The Power of Field-Flow Fractionation in Characterization of Nanoparticles in Drug Delivery

open access: yesMolecules, 2023
Asymmetric-flow field-flow fractionation (AF4) is a gentle, flexible, and powerful separation technique that is widely utilized for fractionating nanometer-sized analytes, which extend to many emerging nanocarriers for drug delivery, including lipid ...
Juan Bian   +3 more
doaj   +1 more source

Gravitational Field-Flow Fractionation Devices Fabricated via a Hot Embossing/Thermal Bonding Method

open access: yesMicromachines, 2014
A novel hot embossing/low temperature ethanol solvent bonding method for the fabrication of polymethylmethacrylate (PMMA) field flow fractionation devices has been developed.
Kaijun Yang
doaj   +1 more source

Comparison of Miniaturized and Conventional Asymmetrical Flow Field-Flow Fractionation (AF4) Channels for Nanoparticle Separations

open access: yesSeparations, 2017
The performance of a miniaturized channel for the separation of polymer and metal nanoparticles (NP) using Asymmetrical Flow Field-Flow Fractionation (AF4) was investigated and compared with a conventional AF4 system.
Zengchao You   +2 more
doaj   +1 more source

Advection-dispersion in symmetric field-flow fractionation channels [PDF]

open access: yes, 1998
We model the evolution of the concentration field of macromolecules in a symmetric field-flow fractionation (FFF) channel by a one-dimensional advection-diffusion equation. The coefficients are precisely determined from the fluid dynamics.
Roberts, A. J., Suslov, Sergey A.
core   +1 more source

Controlled Disassembly and Purification of Functional Viral Subassemblies Using Asymmetrical Flow Field-Flow Fractionation (AF4)

open access: yesViruses, 2018
Viruses protect their genomes by enclosing them into protein capsids that sometimes contain lipid bilayers that either reside above or below the protein layer.
Katri Eskelin, Minna M. Poranen
doaj   +1 more source

Field-Flow Fractionation Analysis of Complex Biological Samples [PDF]

open access: yesKemija u Industriji, 2014
Normal analytical methods have difficulties when analysing complex samples containing particles of different size. In the 1960s, a new analytical technique was developed, which was able to overcome those difficulties.
Mijić, I.   +3 more
doaj  

Application of Af4-Multidetection to Liraglutide in Its Formulation: Preserving and Representing Native Aggregation

open access: yesMolecules, 2022
Aggregation is among the most critical parameters affecting the pharmacological and safety profile of peptide Active Pharmaceutical Ingredients (APIs).
Valentina Marassi   +9 more
doaj   +1 more source

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