Determination of partition and lateral diffusion coefficients of ubiquinones by fluorescence quenching of n-(9-anthroyloxy)stearic acids in phospholipid vesicles and mitochondrial membranes

Biochemistry ◽  
1986 ◽  
Vol 25 (11) ◽  
pp. 3378-3390 ◽  
Author(s):  
Romana Fato ◽  
Maurizio Battino ◽  
Mauro Degli Esposti ◽  
Giovanna Parenti Castelli ◽  
Giorgio Lenaz
Keyword(s):  
Fluorescence Quenching ◽  
Diffusion Coefficients ◽  
Lateral Diffusion ◽  
Phospholipid Vesicles ◽  
Mitochondrial Membranes

Determination of lateral diffusion coefficients in air-water monolayers by fluorescence quenching measurements

1991 ◽  
Vol 113 (13) ◽  
pp. 4838-4843 ◽  
Author(s):  
F. Caruso ◽  
F. Grieser ◽  
A. Murphy ◽  
P. Thistlethwaite ◽  
R. Urquhart ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Diffusion Coefficients ◽  
Lateral Diffusion

scholarly journals A method for estimating lateral diffusion coefficients in membranes from steady-state fluorescence quenching studies

1987 ◽  
Vol 51 (5) ◽  
pp. 735-744 ◽  
Author(s):  
M.F. Blackwell ◽  
K. Gounaris ◽  
S.J. Zara ◽  
J. Barber
Keyword(s):  
Steady State ◽  
Fluorescence Quenching ◽  
Diffusion Coefficients ◽  
Lateral Diffusion ◽  
Steady State Fluorescence

Inverse T-Sample Method of Determination of the Interdiffusion Coefficients in the Cu-Ni-Sn System

2005 ◽  
Vol 237-240 ◽  
pp. 224-229
Author(s):  
Yu.A. Lyashenko ◽  
V.V. Bogdanov
Keyword(s):  
Diffusion Coefficients ◽  
Lateral Diffusion ◽  
Ternary Diffusion ◽  
Special Configuration ◽  
Intermediate Phases ◽  
Ternary Diffusion Couple ◽  
The Matrix ◽  
Sample Method ◽  
Interdiffusion Coefficients

A method of the determining of the mutual diffusion coefficients in ternary intermediate phases is suggested. Methodology for determination of the interdiffusion coefficients of phases formed in a ternary diffusion couple in T-sample configuration is presented. The method requires only one annealing of the T-sample and makes it possible to calculate the matrix of the diffusion coefficients in the (CuNi)6Sn5 and Cu3Sn ternary intermediate phases under low temperature. The concentration profiles and electron micrograph of the diffusion zone was obtained in the ternary Cu-Ni-Sn system annealed for 64 hours under 200°C. Phase competition in this ternary system with special configuration of T-sample leads to lateral diffusion of Cu, to formation (CuNi)6Sn5 compound between Ni-Sn side and to suppression of other NixSny intermediate phases.

Measurement of the lateral diffusion coefficients of ubiquinones in lipid vesicles by fluorescence quenching of 12-(9-anthroyl)stearate

FEBS Letters ◽  
1985 ◽  
Vol 179 (2) ◽  
pp. 238-242 ◽  
Author(s):  
Romana Fato ◽  
Maurizio Battino ◽  
Giovanna Parenti Castelli ◽  
Giorgio Lenaz
Keyword(s):  
Fluorescence Quenching ◽  
Diffusion Coefficients ◽  
Lateral Diffusion ◽  
Lipid Vesicles

The Calculation of Turbulent Diffusion Coefficients in Aquatic Ecosystems

2019 ◽  
Vol 70 (11) ◽  
pp. 3903-3907
Author(s):  
Galina Marusic ◽  
Valeriu Panaitescu
Keyword(s):  
Transport Equation ◽  
Turbulent Diffusion ◽  
Diffusion Coefficients ◽  
Aquatic Ecosystems ◽  
Specific Area ◽  
Left Bank ◽  
The Right ◽  
Prut River

The paper deals with the issues related to the pollution of aquatic ecosystems. The influence of turbulence on the transport and dispersion of pollutants in the mentioned systems, as well as the calculation of the turbulent diffusion coefficients are studied. A case study on the determination of turbulent diffusion coefficients for some sectors of the Prut River is presented. A new method is proposed for the determination of the turbulent diffusion coefficients in the pollutant transport equation for specific sectors of a river, according to the associated number of P�clet, calculated for each specific area: the left bank, the right bank and the middle of the river.

Comments on determination of diffusion coefficients by chronoamperometry with unshielded planar stationary electrodes

1983 ◽  
Vol 55 (2) ◽  
pp. 382-383 ◽  
Author(s):  
Duane E. Weisshaar ◽  
Dennis E. Tallman
Keyword(s):  
Diffusion Coefficients

scholarly journals Migration of mineral oil in elastomers

2021 ◽  
Author(s):  
Tobias Förster ◽  
Artur Blivernitz
Keyword(s):  
Diffusion Coefficients ◽  
Mineral Oil ◽  
Activation Energies ◽  
Concentration Profiles ◽  
Small Reservoir ◽  
Experimental Procedure ◽  
Mineral Oils ◽  
The Absolute ◽  
Suitable Measure

AbstractThis work describes a newly introduced experimental procedure to quantify the diffusion progress of mineral oils locally resolved in NBR. Diffusion of reference oils IRM 901, IRM 902 and IRM 903 in NBR with various acrylonitrile contents was investigated. Classical sorption experiments were performed as a basic characterization and compared to the newly introduced method. Here, elastomer specimens are only being dipped with the bottom in a relatively small reservoir of mineral oil. This provides a determination of locally resolved concentration profiles of mineral oils, and the calculation of diffusion coefficients. These diffusion coefficients follow the same trends like those determined via sorption experiments. Despite differences in the absolute numbers, activation energies of diffusion can be applied as a suitable measure for the compatibility of elastomers and fluids.

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