Zobrazeno 1 - 10
of 36
pro vyhledávání: '"F. R. Hallett"'
Autor:
F. R. Hallett, Jeremy Pencer
Publikováno v:
Langmuir. 19:7488-7497
A theoretical description of the effects of size, size distribution, and shape of large unilamellar vesicles on static (SLS) and dynamic (DLS) light scattering measurements is presented. Practical limitations and the relative accuracy of different an
Autor:
F. R. Hallett, K. B. Strawbridge
Publikováno v:
Macromolecules. 27:2283-2290
Traditionally, particle size distributions have been successfully obtained from dynamic light scattering (DLS) data. However, integrated light scattering (ILS) data in the form of I(Q) vs Q contains more information abut the particle, especially in t
Autor:
F. R. Hallett, Jianhong Wang
Publikováno v:
Applied optics. 35(1)
An analytic inversion method, based on the anomalous diffraction approximation for nonabsorbing spherical particles, was developed to retrieve the size distribution from the optical turbidity or extinction spectrum. This method makes use of a differe
Publikováno v:
Applied optics. 21(4)
This investigation indicates that model quasi-elastic light scattering spectra from particles moving on a helical trajectory exhibit nonscaling behavior. At low q light scattering samples the average progressive speed of the center of mass, while at
Autor:
F. R. Hallett, J. Josefowicz
Publikováno v:
Applied optics. 14(3)
Homodyne light fluctuation spectroscopy is combined with an electrophoresis apparatus to provide a technique that rapidly measures electrophoretic mobilities of charged particles suspended in a liquid medium. Two parallel laser beams, polarized in th
Autor:
F. R. Hallett, K. B. Strawbridge
Publikováno v:
Canadian Journal of Physics. 70:401-406
Integrated light-scattering spectroscopy provides a method of determining the size, coat thickness, and lumen refractive index of a variety of coated-sphere systems. Integrated light-scattering spectroscopy performed on hollow-latex-sphere suspension
Publikováno v:
Biophysical journal. 59(2)
A procedure is described which optimizes nonnegative least squares and exponential sampling fitting methods for analysis of dynamic light scattering (DLS) data from aqueous suspensions of vesicle/liposome systems. This approach utilizes a Rayleigh-Ga
Publikováno v:
Proceedings of the National Academy of Sciences. 88:2269-2273
Previously uncharacterized lipid-protein microvesicles have been isolated from young and senescing bean cotyledon tissue. The microvesicles are nonsedimentable and enriched in phospholipid degradation products (free fatty acids, long-chain aldehydes,
Publikováno v:
Macromolecules. 24:87-93
Des copolymeres bi- et trisequences forment en solution aqueuse des micelles spheriques de 2 types dont les dimensions respectives sont constantes dans le domaine de concentration 2•10 −5 −2•10 −3 g/ml. La fraction en masse des particules l
Autor:
F. R. Hallett, M Alexander
Publikováno v:
Applied optics. 38(19)
A small-angle integrated light-scattering (SAILS) instrument was designed with the innovative use of a diffusing plate and a charge-coupled device (CCD) camera. In contrast to previous small-angle light-scattering instruments, SAILS has few optical s