Results 21 to 30 of about 5,188 (197)

Surface Properties of Saponin—Chitosan Mixtures

open access: yesMolecules, 2022
The surface properties of saponin and saponin-chitosan mixtures were analysed as a function of their bulk mixing ratio using vibrational sum-frequency generation (SFG), surface tensiometry and dilational rheology measurements.
Marcel Krzan   +8 more
doaj   +1 more source

Controlling nonspecific protein adsorption in a plug-based microfluidic system by controlling interfacial chemistry using fluorous-phase surfactants [PDF]

open access: yes, 2005
Control of surface chemistry and protein adsorption is important for using microfluidic devices for biochemical analysis and high-throughput screening assays. This paper describes the control of protein adsorption at the liquid-liquid interface in a plug-
Ismagilov, Rustem F.   +2 more
core   +2 more sources

Surface Tension Measurements with the Drop Profile Analysis Tensiometry—Consideration of the Surfactant Mass Balance in a Single Drop

open access: yesColloids and Interfaces, 2017
In drop profile analysis tensiometry, the ratio of drop surfaces area S to volume V is large, i.e., S/V >> 1. In such a case, the concentration of a surfactant within the drop bulk decreases due to adsorption at the drop surface.
Talmira Kairaliyeva   +10 more
doaj   +1 more source

Tensiometry as a Simple Analytical Method for Quantification of Solubility and Release of Aroma Molecules in Aqueous Media

open access: yesMolecules, 2021
Dynamic tensiometry is shown to be a high-potential analytical tool in assessing physico-chemical characteristics of fragrance molecules, such as solubility limit, volatility as well as much rarely assessed interfacial activity of these amphiphilic ...
Ruth Kudla   +2 more
doaj   +1 more source

Utilizing Dynamic Tensiometry to Quantify Contact Angle Hysteresis and Wetting State Transitions on Nonwetting Surfaces [PDF]

open access: yes, 2013
Goniometric techniques traditionally quantify two parameters, the advancing and receding contact angles, that are useful for characterizing the wetting properties of a solid surface; however, dynamic tensiometry, which measures changes in the net force ...
Cohen, Robert E   +4 more
core   +1 more source

Avaliação no campo de um TDR segmentado para estimativa da umidade do solo Field evaluation of a TDR multilevel probe for soil moisture measurements

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2004
O uso da técnica da reflectometria no domínio do tempo (TDR), para determinação da umidade do solo, vem ganhando cada vez mais espaço e a medição da umidade por camadas do solo através de hastes segmentadas é um recurso que amplia a utilidade desta ...
Rogerio Cichota   +1 more
doaj   +1 more source

Residual force enhancement is affected more by quadriceps muscle length than stretch amplitude

open access: yeseLife, 2022
Little is known about how muscle length affects residual force enhancement (rFE) in humans. We therefore investigated rFE at short, long, and very long muscle lengths within the human quadriceps and patellar tendon (PT) using conventional dynamometry ...
Patrick Bakenecker   +3 more
doaj   +1 more source

Microfluidic Dynamic Interfacial Tensiometry (μDIT)

open access: yesSoft Matter, 2014
We designed, developed and characterized a microfluidic method for the measurement of surfactant adsorption kinetics via interfacial tensiometry on a microfluidic chip. The principle of the measurement is based on the deformability of droplets as a response to hydrodynamic forcing through a series of microfluidic expansions.
Brosseau, Quentin   +2 more
openaire   +3 more sources

A neural network model for early diagnosis of chronic heart failure

open access: yesИзвестия высших учебных заведений. Поволжский регион: Медицинские науки, 2022
Background. The WHO reports that cardiovascular diseases are the leading cause of disability and mortality. The high prevalence as well as the severity of chronic heart failure requires the development of new methods of early diagnosis and treatment ...
V.I. Gorbachenko   +4 more
doaj   +1 more source

Nanostructures from self-assembling triazine tertiary amine N-oxide amphiphiles [PDF]

open access: yes, 2013
A new set of amphiphilic tertiary amine N-oxides has been prepared and their self-assembly properties observed in aqueous solution by tensiometry, dynamic and static light scattering.
Adamczyk   +73 more
core   +1 more source

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