Simultaneous extraction of optical transport parameters and intrinsic fluorescence of tissue mimicking model media using a spatially resolved fluorescence technique

2006 ◽  
Vol 45 (28) ◽  
pp. 7529 ◽  
Author(s):  
Sharad Gupta ◽  
V. L. N. Sridhar Raja ◽  
Asima Pradhan
Keyword(s):  
Intrinsic Fluorescence ◽  
Fluorescence Technique ◽  
Transport Parameters ◽  
Simultaneous Extraction ◽  
Spatially Resolved ◽  
Optical Transport

Control of optical transport parameters of 'porous medium – supercritical fluid' systems

2015 ◽  
Vol 45 (11) ◽  
pp. 1069-1074
Author(s):  
D A Zimnyakov ◽  
O V Ushakova ◽  
S A Yuvchenko ◽  
V N Bagratashvili
Keyword(s):  
Porous Medium ◽  
Supercritical Fluid ◽  
Transport Parameters ◽  
Fluid Systems ◽  
Optical Transport

scholarly journals Spatially resolved information on karst conduit flow from in-cave dye tracing

2014 ◽  
Vol 18 (2) ◽  
pp. 435-445 ◽  
Author(s):  
U. Lauber ◽  
W. Ufrecht ◽  
N. Goldscheider
Keyword(s):  
Land Surface ◽  
Karst Aquifer ◽  
Tracer Tests ◽  
Breakthrough Curves ◽  
Transport Parameters ◽  
Mean Flow ◽  
Dye Tracing ◽  
Flow And Transport ◽  
Spatially Resolved ◽  
Order Of Magnitude

Abstract. Artificial tracers are powerful tools for investigating karst systems. Tracers are commonly injected into sinking streams or dolines, while springs serve as monitoring sites. The obtained flow and transport parameters represent mixed information from the vadose, epiphreatic and phreatic zones (that is, the aquifer remains a black box). Accessible active caves constitute valuable but underexploited natural laboratories to gain detailed insights into the hydrologic functioning of the aquifer. Two multi-tracer tests in the catchment of a major karst spring (Blautopf, Germany) with injections and monitoring in two associated water caves aimed at obtaining spatially and temporally resolved information on groundwater flow in different compartments of the system. Two tracers were injected into the caves to characterize the hydraulic connections between them and with the spring. Two injections at the land surface, far from the spring, aimed at resolving the aquifer's internal drainage structure. Tracer breakthrough curves were monitored by field fluorimeters in caves and at the spring. Results demonstrate the dendritic drainage structure of the aquifer. It was possible to obtain relevant flow and transport parameters for different sections of this system. The highest mean flow velocities (275 m h−1) were observed in the near-spring epiphreatic section (open-channel flow), while velocities in the phreatic zone (pressurized flow) were one order of magnitude lower. Determined conduit water volumes confirm results of water balances and hydrograph analyses. In conclusion, experiments and monitoring in caves can deliver spatially resolved information on karst aquifer heterogeneity and dynamics that cannot be obtained by traditional investigative methods.

scholarly journals Spatially resolved information on karst conduit flow from in-cave dye-tracing

2013 ◽  
Vol 10 (9) ◽  
pp. 11311-11335 ◽  
Author(s):  
U. Lauber ◽  
W. Ufrecht ◽  
N. Goldscheider
Keyword(s):  
Land Surface ◽  
Karst Aquifer ◽  
Tracer Tests ◽  
Breakthrough Curves ◽  
Transport Parameters ◽  
Mean Flow ◽  
Dye Tracing ◽  
Flow And Transport ◽  
Spatially Resolved ◽  
Order Of Magnitude

Abstract. Artificial tracers are powerful tools to investigate karst systems. Tracers are commonly injected into sinking streams or dolines, while springs serve as monitoring sites. The obtained flow and transport parameters represent mixed information from the vadose, epiphreatic and phreatic zones, i.e., the aquifer remains a black box. Accessible active caves constitute valuable but underexploited natural laboratories to gain detailed insights into the hydrologic functioning of the aquifer. Two multi-tracer tests in the catchment of a major karst spring (Blautopf, Germany) with injections and monitoring in two associated water caves aimed at obtaining spatially and temporally resolved information on groundwater flow in different compartments of the system. Two tracers were injected in the caves to characterize the hydraulic connections between them and with the spring. Two injections at the land surface, far from the spring, aimed at resolving the aquifer's internal drainage structure. Tracer breakthrough curves were monitored by field fluorimeters in caves and at the spring. Results demonstrate the dendritic drainage structure of the aquifer. It was possible to obtain relevant flow and transport parameters for different sections of this system. The highest mean flow velocities (275 m h−1) were observed in the near-spring epiphreatic section (open-channel flow), while velocities in the phreatic zone (pressurized flow) were one order of magnitude lower. Determined conduit water volumes confirm results of water balances and hydrograph analyses. In conclusion, experiments and monitoring in caves can deliver spatially resolved information on karst aquifer heterogeneity and dynamics that cannot be obtained by traditional investigative methods.

Conformational behaviors of syndiotactic polystyrene in chloroform revealed by intrinsic fluorescence technique

Polymer ◽  
2011 ◽  
Vol 52 (15) ◽  
pp. 3503-3511 ◽  
Author(s):  
Juying Zhou ◽  
Jin Yang ◽  
Kun Yang ◽  
Bin Zhang ◽  
Chenglong Hu ◽  
...  
Keyword(s):  
Intrinsic Fluorescence ◽  
Syndiotactic Polystyrene ◽  
Fluorescence Technique

α-Lactalbumin binds magnesium ions: Study by means of intrinsic fluorescence technique

1981 ◽  
Vol 102 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Eugene A. Permyakov ◽  
Lina P. Kalinichenko ◽  
Ludmila A. Morozova ◽  
Vladimir V. Yarmolenko ◽  
Edward A. Burstein
Keyword(s):  
Intrinsic Fluorescence ◽  
Fluorescence Technique ◽  
Magnesium Ions
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