Although the multiplication of bacteriophages (phages) has a substantial impact on the biosphere, comparatively little is known about how the external environment affects phage production. Here we report that sub-lethal concentrations of certain antibiotics can substantially stimulate the host bacterial cell’s production of some virulent phage. For example, a low dosage of cefotaxime, a cephalo...

© 2005, International Society for Scientometrics and Informetrics (ISSI) © 2005-2006, International Society for Scientometrics and Informetrics (ISSI) 4 (HIRSCH, 2005) introduced an index h defined as the number of papers of certain author with citation number of at least h, and calculated the values of the h-index of Nobel-winners and of other top physicists and biologists. Typical h-values in...

A new Peaceman–Rachford alternating direction implicit (PR-ADI) method is proposed in this work for solving two-dimensional (2D) parabolic interface problems with discontinuous solutions. The classical ADI schemes are known to be inaccurate for handling interfaces. This motivates the development of a matched Douglas ADI (D-ADI) method in the literature, in which the finite difference is locally...