scholarly journals Spatial intensity distribution model of fluorescence emission considering the spatial attenuation effect of excitation light

2021 ◽  
Vol 29 (5) ◽  
pp. 6468
Author(s):  
Yuchao Fu ◽  
Meizhen Huang ◽  
Wanxiang Li
Keyword(s):  
Intensity Distribution ◽  
Fluorescence Emission ◽  
Distribution Model ◽  
Excitation Light ◽  
Attenuation Effect ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity ◽  
Spatial Attenuation

scholarly journals Laser light scattering in turbid media Part I: Experimental and simulated results for the spatial intensity distribution

2007 ◽  
Vol 15 (17) ◽  
pp. 10649 ◽  
Author(s):  
Edouard Berrocal ◽  
David L. Sedarsky ◽  
Megan E. Paciaroni ◽  
Igor V. Meglinski ◽  
Mark A. Linne
Keyword(s):  
Light Scattering ◽  
Intensity Distribution ◽  
Laser Light ◽  
Laser Light Scattering ◽  
Turbid Media ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity

scholarly journals Spatial intensity distribution analysis quantifies the extent and regulation of homodimerization of the secretin receptor

2017 ◽  
Vol 474 (11) ◽  
pp. 1879-1895 ◽  
Author(s):  
Richard J. Ward ◽  
John D. Pediani ◽  
Kaleeckal G. Harikumar ◽  
Laurence J. Miller ◽  
Graeme Milligan
Keyword(s):  
G Protein ◽  
Intensity Distribution ◽  
Transmembrane Domain ◽  
Distribution Analysis ◽  
Wild Type ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity ◽  
Secretin Receptor ◽  
Dimeric Form ◽  
Type Receptor

Previous studies have indicated that the G-protein-coupled secretin receptor is present as a homodimer, organized through symmetrical contacts in transmembrane domain IV, and that receptor dimerization is critical for high-potency signalling by secretin. However, whether all of the receptor exists in the dimeric form or if this is regulated is unclear. We used measures of quantal brightness of the secretin receptor tagged with monomeric enhanced green fluorescent protein (mEGFP) and spatial intensity distribution analysis to assess this. Calibration using cells expressing plasma membrane-anchored forms of mEGFP initially allowed us to demonstrate that the epidermal growth factor receptor is predominantly monomeric in the absence of ligand and while wild-type receptor was rapidly converted into a dimeric form by ligand, a mutated form of this receptor remained monomeric. Equivalent studies showed that, at moderate expression levels, the secretin receptor exists as a mixture of monomeric and dimeric forms, with little evidence of higher-order complexity. However, sodium butyrate-induced up-regulation of the receptor resulted in a shift from monomeric towards oligomeric organization. In contrast, a form of the secretin receptor containing a pair of mutations on the lipid-facing side of transmembrane domain IV was almost entirely monomeric. Down-regulation of the secretin receptor-interacting G-protein Gαs did not alter receptor organization, indicating that dimerization is defined specifically by direct protein–protein interactions between copies of the receptor polypeptide, while short-term treatment with secretin had no effect on organization of the wild-type receptor but increased the dimeric proportion of the mutated receptor variant.

Spatial intensity distribution of the radiative return from scattering media irradiated by a cw laser beam

2017 ◽  
Author(s):  
Ljuan L. Gurdev ◽  
Tanja N. Dreischuh ◽  
Orlin I. Vankov ◽  
Eleonora N. Toncheva ◽  
Lachezar A. Avramov ◽  
...  
Keyword(s):  
Laser Beam ◽  
Intensity Distribution ◽  
Scattering Media ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity ◽  
Cw Laser ◽  
Radiative Return

Spatial intensity distribution Analysis (SpIDA): A fluorescence microscopy based method to measure receptor oligomerization in cells

2012 ◽  
Vol 18 (S2) ◽  
pp. 128-129 ◽  
Author(s):  
P.W. Wiseman ◽  
A.G. Godin ◽  
J.L. Swift ◽  
S. Costantino ◽  
A. Ribeiro-da-Silva ◽  
...  
Keyword(s):  
Fluorescence Microscopy ◽  
Intensity Distribution ◽  
Distribution Analysis ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity ◽  
Receptor Oligomerization ◽  
In Cells

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals Preliminary Results on Luminaire Designs for Hybrid Solar Lighting Systems

2001 ◽  
Author(s):  
D. D. Earl ◽  
J. D. Muhs
Keyword(s):  
Intensity Distribution ◽  
Fiber Optic ◽  
High Angle ◽  
Optical Efficiency ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity ◽  
Fluorescent Lamps ◽  
Solar Lighting ◽  
Lighting Systems ◽  
Two Hybrid

Abstract We report on the design of two hybrid lighting liminaires that blend light from a fiber optic end-emitted solar source with electric T8 fluorescent lamps. Both designs involve the retrofit of a commercially-available recessed fluorescent luminaire with minimal reductions in the original luminaire’s optical efficiency. Two methods for high-angle dispersion of fiber optic end-emitted solar light are described and the resulting spatial intensity distributions, simulated using ZEMAX, are compared with standard cylindrical fluorescent tubes. Differences in spatial intensity distribution are qualitatively characterized and potential design improvements discussed.

Calculation of spatial intensity distribution of InAsSb/InAsSbP laser diode emission

2008 ◽  
Vol 75 (6) ◽  
pp. 805-809
Author(s):  
L. I. Burov ◽  
A. S. Gorbatsevich ◽  
A. G. Ryabtsev ◽  
G. I. Ryabtsev ◽  
A. N. Imenkov ◽  
...  
Keyword(s):  
Laser Diode ◽  
Intensity Distribution ◽  
Spatial Intensity Distribution ◽  
Spatial Intensity
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