The modulus and phase of the reduced logarithmic derivative of the Hankel function zH^'iz)/Hi'\z) for complex variable z and real order v, are investigated. Special attention is paid to the location of saddle points and their trajectories as v varies.

We consider a general class of Glauber dynamics reversible with respect to the standard Ising model in Z with zero external field and inverse temperature β strictly larger than the critical value βc in dimension 2 or the so called “slab threshold” β̂c in dimension d > 3. We first prove that the inverse spectral gap in a large cube of side N with plus boundary conditions is, apart from logarithmi...

background and objectives : streptokinase is used clinically as an intravenous thrombolytic agent for the treatment of acute myocardial infarction and is commonly prepared from cultures of streptococcus equisimilis strain h46a. the objective of the present study was the production of streptokinase from strain h46a and purification by chemical reduction method. materials and methods: the rate of...

THE oxidation-reduction potentials established in cultures during the growth of various bacteria under different conditions have been described in previous communications. By extending these studies to other bacteria it is hoped to reveal the general effects of cultural conditions and the individual differences between different organisms. Serum proteins have an inhibiting effect on the establi...

We study the Ising model in a hierarchical small-world network by renormalization group analysis and find a phase transition between an ordered phase and a critical phase, which is driven by the coupling strength of the shortcut edges. Unlike ordinary phase transitions, which are related to unstable renormalization fixed points (FPs), the singularity in the ordered phase of the present model is...

purpose: e is a commonly use letter for illiterates or those who could not read english to measure visual acuity. the e chart is the mainly used charts in iran. however, they do not have the standards. they are in different format, fixed for 6 meter test, with or without lighting, with unequal number of letters in each line and different contrasts. as a result, there is an essential need for a ...