PHOTOGRAPHY OF LUMINOUS EXTENDED OBJECTS AGAINST A TWILIGHT SKY (2001)
Clouds of sodium, lithium, and potassium vapor are used to determine wind velocity and the coefficient of expansion for various heights in the upper atmosphere. These materials scatter sunlight...
INTERPLANETARY NAVIGATION STUDIES. DIAMETERS OF TERRESTRIAL PLANETS) (1998)
Geophysics Corp. of America, Bedford, Mass. INTERPLANETARY NALUS. TABLES (GCA Technical rept. no. 61-30-A) (Contract AF 33(616)7413) Unclassified report DESCRIPTORS: Space flight, *Space navigation,...
Johnston, T. P., Webb, C. L., Schoen, F. J., Levy, R. J.
Calcification (CALC) is the most frequent cause for the failure of bioprosthetic heart valves fabricated from glutaraldehyde-pretreated porcine aortic valve, and contributes to the failure of...
Bioprosthetic heart valve calcification: membrane-mediated events and alkaline phosphatase (1992)
Peer Reviewed
Iontophoresis for modulation of cardiac drug delivery in dogs.
Labhasetwar, V, Underwood, T, Schwendeman, S P, Levy, R J
Cardiac arrhythmias are a frequent cause of death and morbidity. Conventional antiarrhythmia therapy involving oral or intravenous medication is often ineffective and complicated by drug-associated...
Villa, A E, Guzman, L A, Chen, W, Golomb, G, Levy, R J, Topol, E J
A periadventitial polymer system is an alternative local drug delivery technique to obtain and maintain high tissue levels of the drug at the site of vascular injury. To determine if local...
Iontophoresis for modulation of cardiac drug delivery in dogs.
Labhasetwar, V, Underwood, T, Schwendeman, S P, Levy, R J
Cardiac arrhythmias are a frequent cause of death and morbidity. Conventional antiarrhythmia therapy involving oral or intravenous medication is often ineffective and complicated by drug-associated...
Villa, A E, Guzman, L A, Chen, W, Golomb, G, Levy, R J, Topol, E J
A periadventitial polymer system is an alternative local drug delivery technique to obtain and maintain high tissue levels of the drug at the site of vascular injury. To determine if local...
Webb, C. L., Schoen, F. J., Flowers, W. E., Alfrey, A. C., Horton, C., Levy, R. J.
In the present study, the authors investigated the mechanism by which Al3+ preincubations inhibited the pathologic calcification of glutaraldehyde-pretreated bovine pericardium (GPBP) implanted...
Webb, C. L., Nguyen, N. M., Schoen, F. J., Levy, R. J.
Aortic allograft conduits and valves frequently undergo calcific degeneration. To study this problem, a rat subdermal model of nonvalved aortic wall allograft calcification was characterized, and...
Levy, R. J., Schoen, F. J., Sherman, F. S., Nichols, J., Hawley, M. A., Lund, S. A.
Although collagen-containing implants are widely used in various surgical applications, there has been relatively little attention paid to the possibility that this type of biomaterial may undergo...
Schoen, F. J., Tsao, J. W., Levy, R. J.
Calcification of bioprosthetic heart valves fabricated from glutaraldehyde-pretreated bovine pericardium has not been investigated. The objectives of this study were to characterize pericardium...
Golomb, G., Schoen, F. J., Smith, M. S., Linden, J., Dixon, M., Levy, R. J.
Calcification is the principal cause of failure of tissue-derived cardiac valve replacements pretreated with glutaraldehyde (GLUT). The objective of this study was to determine the role of...
Levy, R J, Haidar, M, Park, H, Tar, L, Levinson, A I
The present studies were carried out to further characterize the polyclonal B cell activating properties of bacterial peptidoglycan (PG) and to determine if this ubiquitous agent induces in vitro IgM...
Levy, R. J., Schoen, F. J., Levy, J. T., Nelson, A. C., Howard, S. L., Oshry, L. J.
Bioprosthetic cardiac valve calcification is a frequent complication after long-term valve replacement. In this study the authors sought to examine the biologic determinants of this type of...