A parameter identifiability study of two chalk tracer tests S. A. Mathias, A. P. Butler, T. C. Atkinson , S. Kachi, and R. S. Ward Department of Civil and Environmental Engineering, Imperial College London, London SW7 2AZ, UK Department of Earth Sciences, University College London, London WC1E 6BT, UK School of Environmental Sciences, University of East Anglia, Norwich NR4 7TU, UK now at: Insti...

introduction: 64cu-pyruvaldehyde-bis(n4-methylthiosemicarbazone) (64cu-ptsm)‍ is one of the most important copper radiopharmaceuticals used in clinical experiments. methods: in this work, copper-64 (t1/2=12.33 h) production has been presented followed by the synthesis of the complexing agent, ptsm, and its structure was confirmed by common spectroscopic methods followed by radiolabeling with 64...

Aqueous fluorophotometric, tracer localization and modeling methods were combined to document the existence of a pathway in the normal rabbit for the diffusion of proteins from the ciliary and iridial process stromas through the iris stroma into the aqueous humor of the anterior chamber. A new custom-conjugated tracer, fluoresceinated horseradish peroxidase (F-HRP), was used. Anesthetized rabbi...

In heart failure secondary to chronic mechanical overload, cardiac sympathetic neurons demonstrate depressed catecholamine synthetic and transport function. To assess the potential of sympathetic neuronal imaging for detection of depressed transport function, serial scintigrams were acquired after the intravenous administration of metaiodobenzylguanidine [131I] to 13 normal dogs, 3 autotranspla...

ANSI/ASHRAE Standard 110 provides a quantitative method for testing the performance of laboratory fume hoods. Through release of a known quantity (4.0 Lpm) of a tracer gas, and subsequent monitoring of the tracer gas concentration in the "breathing zone" of a mannequin positioned in front of the hood, this method allows for evaluation of laboratory hood performance. Standard 110 specifies sulfu...

This paper details a simplified implementation of a bidirectional ray tracer as presented in [Lafortune and Willems 1993], and the path tracing equivalent presented and implemented in [Pharr and Humphreys 2004].

The graphics industry has advanced very far from the days of pixelated 2D images on small monitors. The main focus of graphics hardware work has been achieving the most realistic images while maintaining the interactive nature of realtime applications. This focus has matured and today’s modern graphics card is able to process millions of triangles and vertices to form complex 3D images with a v...