We introduce error weighting functions into the perturbative Monte Carlo method for use with a hybrid ab initio quantum Ž . mechanicsrmolecular mechanics QMrMM potential. The perturbative Monte Carlo approach introduced earlier provides a means to reduce the number of full SCF calculations in simulations using a QMrMM potential by evoking perturbation theory to calculate energy changes due to d...

Hart, Beth A. (Cornell University, Ithaca, N.Y.), and Stanley A. Zahler. Lytic enzyme produced by Myxococcus xanthus. J. Bacteriol. 92:1632-1637. 1966.-Strain FBa of Myxococcus xanthus releases into its culture medium an enzyme capable of lysing Micrococcus lysodeikticus cells and of releasing N-acetyl amino sugars from their cell walls. The lysin is stable at pH values near neutrality and at t...

We demonstrate quantum interference for tetraphenylporphyrin, the first biomolecule exhibiting wave nature, and for the fluorofullerene C60F48 using a near-field Talbot-Lau interferometer. For the porphyrins, which are distinguished by their low symmetry and their abundant occurrence in organic systems, we find the theoretically expected maximal interference contrast and its expected dependence...

Baby Martin-McNulty, Doris M. Tham, Valdeci da Cunha, Jerrick J. Ho, Dennis W. Wilson, John Deficient Mice − Aneurysm in Apolipoprotein E Induced Aortic Abdominal − -Estradiol Attenuates Development of Angiotensin II β 17 Print ISSN: 1079-5642. Online ISSN: 1524-4636 Copyright © 2003 American Heart Association, Inc. All rights reserved. Avenue, Dallas, TX 75231 is published by the American Hear...

The Dutch merchant and naturalist Anton van Leeuwenhoek is considered to be the father of optic microscopy and the precursor of bacteriology. Among others, he discovered and studied the spermatozoon.

Contemporary accounts of battles are often incomplete or even erroneous because they reflect the-often biased-viewpoints of the authors. Battlefield archaeology faces the task of compiling an historical analysis of a battle and of gathering all the available facts. Besides cultural historical evidence and artefacts, the human remains of those who have fallen in battle also provide invaluable in...