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Your search keyword '"Leventhal, Jack P."' showing total 14 results
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14 results on '"Leventhal, Jack P."'

1. Alexander Quandles and Detecting Causality

Author

Leventhal, Jack

Subjects
Mathematics - Geometric Topology, General Relativity and Quantum Cosmology
Abstract

In a recent paper, Allen and Swenberg investigated which link polynomials are capable of detecting causality in (2+1)-dimensional globally hyperbolic spacetimes. They ultimately suggested it is likely that the Jones Polynomial accomplishes this, while the Alexander-Conway polynomial, independently, is insufficient. As the Alexander-Conway polynomial on its own is not likely to detect causality an additional piece of information must be supplemented to the link polynomial. This paper aims to examine the ability of Alexander quandles, to distinguish the connected sum of two Hopf links and Allen-Swenberg Links. As the number of homomorphisms given by the Alexander quandles for the connected sum of Hopf links and the number of homomorphisms for the Allen-Swenberg Link are the same, we can conclude that the links are not distinguishable from one another using Alexander quandles and hence these quandles cannot capture causality when added to the Alexander-Conway polynomial., Comment: 19 pages, 9 figures

Published
2022

11. Toxoplasma Peritonitis in a Patient With Acquired Immunodeficiency Syndrome

Author

Israelski, Dennis M., Skowron, Gail, Leventhal, Jack P., Long, Irma, Blankenship, Charles F., Barrio, Gabriel W., Prince, Jeffrey B., Araujo, Fausto G., and Remington, Jack S.

Abstract

• Toxoplasma gondii was identified in a stained slide preparation of, and isolated from, peritoneal fluid specimens obtained from a patient with the acquired immunodeficiency syndrome (AIDS). At the time of admission to the hospital, the patient's serologic tests were positive for Toxoplasma. Toxo-plasma was isolated from samples of the patient's blood by mouse inoculation. Findings of newly developed methods for diagnosis of the presence of T gondii in body fluids by assay for Toxoplasma-specific antigen and by use of a DNA probe were positive.(Arch Intern Med 1988;148:1655-1657)

Published
1988
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14. The feasibility of topical cocaine use in fiberoptic bronchoscopy.

Author

Festic, Emir, Johnson, Margaret M., and Leventhal, Jack P.

Subjects
*ANESTHESIA research, *BRONCHOSCOPY, *SCIENTIFIC experimentation, *COCAINE, *MIDAZOLAM, *FENTANYL, *LIDOCAINE, *QUANTITATIVE research, *EQUIPMENT & supplies, *THERAPEUTICS, ANALGESIC effectiveness
Abstract

Objective. To test the hypothesis that the application of 4% cocaine-soaked cotton pledgets to each piriform sinus for one minute represents a safe and efficacious method of providing additional topical anesthesia for fiberoptic bronchoscopy. Materials and Methods. We retrospectively reviewed all FBs performed at Mayo Clinic Jacksonville from January 1999 to April 2004. Data abstracted included periprocedural complications and doses of midazolam and fentanyl used in the FBs with or without topical cocaine application in addition to the usual anesthesia with topical xylocaine. The Wilcoxon rank sum test was used for statistical analysis. Results. We identified 92 FBs where topical 4% cocaine was used. A sample of 80 FBs without cocaine use served as the control group. There were no periprocedural complications in either group. There was significantly less fentanyl use in the cocaine versus the control group (P<0.0001, the median dose 75 vs. 100 mcg, respectively). There was no significance in midazolam use in the cocaine versus the control group (p = 0.16). Conclusions. Topical application of 4% cocaine to each piriform sinus in addition to standard xylocaine is safe. Its use is associated with significantly less use of fentanyl. Clinical implications. The use of topical cocaine may allow FB to be performed with less systemic narcotic use. [ABSTRACT FROM AUTHOR]

Published
2010

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