scholarly journals High-resolution intracellular viscosity measurement using time-dependent fluorescence anisotropy

2010 ◽  
Vol 18 (16) ◽  
pp. 16607 ◽  
Author(s):  
Wesley C. Parker ◽  
Nilay Chakraborty ◽  
Regina Vrikkis ◽  
Gloria Elliott ◽  
Stuart Smith ◽  
...  
Keyword(s):  
High Resolution ◽  
Fluorescence Anisotropy ◽  
Viscosity Measurement ◽  
Time Dependent

scholarly journals High Resolution Viscosity Measurement by Thermal Noise Detection

Sensors ◽  
2015 ◽  
Vol 15 (11) ◽  
pp. 27905-27916 ◽  
Author(s):  
Felipe Aguilar Sandoval ◽  
Manuel Sepúlveda ◽  
Ludovic Bellon ◽  
Francisco Melo
Keyword(s):  
High Resolution ◽  
Thermal Noise ◽  
Viscosity Measurement ◽  
Noise Detection

scholarly journals Precise Radial Velocity Measurements with a Cassegrain Spectrograph, I: Wavelength calibration

1999 ◽  
Vol 170 ◽  
pp. 63-67
Author(s):  
I. V. Ilyin ◽  
R. Duemmler
Keyword(s):  
High Resolution ◽  
Radial Velocity ◽  
Cross Correlation ◽  
Time Dependent ◽  
Instrumental Effects ◽  
Velocity Measurements ◽  
Echelle Spectrograph ◽  
Optical Telescope ◽  
La Palma ◽  
Observational Strategy

AbstractWe briefly describe the instrumental effects which affect the accuracy of the radial velocity measurements. We have implemented several methods to correct for the instability effects and improve the accuracy of the measurements. These include modifications of the observational strategy and a time-dependent wavelength solution as well as a discussion of the error of the offset from cross-correlation. These methods are applied to observations obtained with the high resolution échelle spectrograph SOFIN mounted at the Cassegrain focus of the alt-azimuth 2.56-m Nordic Optical Telescope, La Palma, Canary Islands.

Nondestructive Imaging of Materials Microstructures Using X-Ray Tomographic Microscopy

1990 ◽  
Vol 217 ◽  
Author(s):  
J.H. Kinney ◽  
M.C. Nichols ◽  
U. Bonse ◽  
S.R. Stock ◽  
T.M. Breunig ◽  
...  
Keyword(s):  
High Resolution ◽  
Three Dimensional ◽  
Time Dependent ◽  
Materials Processing ◽  
Dependent Data ◽  
Inspection Method ◽  
Dimensional Inspection ◽  
X Ray ◽  
Nondestructive Imaging

ABSTRACTA technique for nondestructively imaging microstructures of materials in situ, especially a technique capable of delineating the time evolution of chemical changes or damage, will greatly benefit studies of materials processing and failure. X-ray tomographic microscopy (XTM) is a high resolution, three-dimensional inspection method which is capable of imaging composite materials microstructures with a resolution of a few micrometers. Because XTM is nondestructive, it will be possible to examine materials under load or during processing, and obtain three-dimensional images of fiber positions, microcracks, and pores. This will allow direct imaging of microstructural evolution, and will provide time-dependent data for comparison to fracture mechanics and processing models.

High-resolution molybdenum K-edge X-ray absorption spectroscopy analyzed with time-dependent density functional theory

2013 ◽  
Vol 15 (48) ◽  
pp. 20911 ◽  
Author(s):  
Frederico A. Lima ◽  
Ragnar Bjornsson ◽  
Thomas Weyhermüller ◽  
Perumalreddy Chandrasekaran ◽  
Pieter Glatzel ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
High Resolution ◽  
Absorption Spectroscopy ◽  
Density Functional ◽  
Time Dependent ◽  
Functional Theory ◽  
X Ray ◽  
X Ray Absorption ◽  
Dependent Density

Time-Dependent Magneto-Convection with Hexagonal Planform

1982 ◽  
Vol 4 (4) ◽  
pp. 373-376 ◽  
Author(s):  
J.M. Lopez ◽  
J.O. Murphy
Keyword(s):  
High Resolution ◽  
Magnetic Fields ◽  
Time Dependent ◽  
Convection Cell ◽  
Small Scale ◽  
Solar Photosphere ◽  
X Ray ◽  
Bright Spots

High-resolution observations indicate that very strong, small scale magnetic fields in the solar photosphere are concentrated into ropes which emerge through it. The scale of these ropes is only a few hundred kilometres across (Stenflo 1976) and their strength is estimated to vary between 1,000 and 2,000 G (Harvey 1977). These features are closely related to photospheric granular convection. The flux is observed as X-ray bright spots and sheet-like crinkles in the dark intergranular lanes, and is buffeted and shifted about by the granules (Dunn and Zirker 1973). Further, the crinkles can be resolved into separate features which outline small micropores as though a flux sheet at the end of a convection cell has separated into several isolated tubes (Galloway and Weiss 1981).

Hysteresis in Cu-Zn-Al SMA: From high resolution studies to the time dependent modelling and simulation

1995 ◽  
Vol 43 (3) ◽  
pp. 993-999 ◽  
Author(s):  
J.L. Pelegrina ◽  
M. Rodriguez De Rivera ◽  
V. Torra ◽  
F.C. Lovey
Keyword(s):  
High Resolution ◽  
Modelling And Simulation ◽  
Time Dependent

scholarly journals Coastal flooding of urban areas by overtopping: dynamic modelling application to the Johanna storm (2008) in Gâvres (France)

2015 ◽  
Vol 15 (11) ◽  
pp. 2497-2510 ◽  
Author(s):  
S. Le Roy ◽  
R. Pedreros ◽  
C. André ◽  
F. Paris ◽  
S. Lecacheux ◽  
...  
Keyword(s):  
High Resolution ◽  
Urban Area ◽  
Urban Areas ◽  
Digital Terrain Model ◽  
Time Dependent ◽  
Shock Capturing ◽  
Terrain Model ◽  
Digital Terrain ◽  
Very High ◽  
Water Depths

Abstract. Recent dramatic events have allowed significant progress to be achieved in coastal flood modelling over recent years. Classical approaches generally estimate wave overtopping by means of empirical formulas or 1-D simulations, and the flood is simulated on a DTM (digital terrain model), using soil roughness to characterize land use. The limits of these methods are typically linked to the accuracy of overtopping estimation (spatial and temporal distribution) and to the reliability of the results in urban areas, which are places where the assets are the most crucial. This paper intends to propose and apply a methodology to simulate simultaneously wave overtopping and the resulting flood in an urban area at a very high resolution. This type of 2-D simulation presents the advantage of allowing both the chronology of the storm and the particular effect of urban areas on the flows to be integrated. This methodology is based on a downscaling approach, from regional to local scales, using hydrodynamic simulations to characterize the sea level and the wave spectra. A time series is then generated including the evolutions of these two parameters, and imposed upon a time-dependent phase-resolving model to simulate the overtopping over the dike. The flood is dynamically simulated directly by this model: if the model uses adapted schemes (well balanced, shock capturing), the calculation can be led on a DEM (digital elevation model) that includes buildings and walls, thereby achieving a realistic representation of the urban areas. This methodology has been applied to an actual event, the Johanna storm (10 March 2008) in Gâvres (South Brittany, in western France). The use of the SURF-WB model, a very stable time-dependent phase-resolving model using non-linear shallow water equations and well-balanced shock-capturing schemes, allowed simulating both the dynamics of the overtopping and the flooding in the urban area, taking into account buildings and streets thanks to a very high resolution (1 m). The results obtained proved to be very coherent with the available reports in terms of overtopping sectors, flooded area, water depths and chronology. This method makes it possible to estimate very precisely not only the overtopping flows, but also the main characteristics of flooding in a complex topography like an urban area, and indeed the hazard at a very high resolution (water depths and vertically integrated current speeds). The comparison with a similar flooding simulation using a more classical approach (a digital terrain model with no buildings, and a representation of the urban area by an increased soil roughness) has allowed the advantages of an explicit representation of the buildings and the streets to be identified: if, in the studied case, the impact of the urbanization representation on water levels does indeed remain negligible, the flood dynamics and the current speeds can be considerably underestimated when no explicit representation of the buildings is provided, especially along the main streets. Moreover, on the seaside, recourse to a time-dependent phase-resolving model using non-stationary conditions allows a better representation of the flows caused by overtopping. Finally, this type of simulation is shown to be of value for hazard studies, thanks to the high level of accuracy of the results in urban areas where assets are concentrated. This methodology, although it is currently still quite difficult to implement and costly in terms of calculation time, can expect to be increasingly resorted to in years to come, thanks to the recent developments in wave models and to the increasing availability of LiDAR data.

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