Clinical Problems Posed by Multiresistant Nonfermenting Gram‐Negative Pathogens

Clinical problems posed by multiresistant nonfermenting gram-negative pathogens.

In this review I will briefly survey the role of Pseudomonas aeruginosa, Acinetobacter baumanii, Stenotrophomonas maltophilia, and Burkholderia cepacia as opportunistic pathogens. A common feature of these organisms is intrinsic resistance to multiple antibiotics. All of these organisms can be recovered from the environment, commonly cause device-related infections, are often resistant to disin...

Editorial: The Global Challenge Posed by the Multiresistant International Clones of Bacterial Pathogens

Ill-Posed and Linear Inverse Problems

In this paper ill-posed linear inverse problems that arises in many applications is considered. The instability of special kind of these problems and it's relation to the kernel, is described. For finding a stable solution to these problems we need some kind of regularization that is presented. The results have been applied for a singular equation.

Lecithinase production by gramnegative bacteria.

Lecithinase production by microorganisms has been investigated in an attempt to use it in the classification of bacteria, and to associate formation with toxicity and virulence. The first record of this reaction was made when Nagler (1939) and Seifert (1939) observed, independently, the formation of an opalescence in human serum by the a toxin of Clostridium perfringens. It was soon found that ...

On Two Problems Posed by Kenneth Stolarsky

Solutions of two slightly more general problems than those posed by Kenneth B. Stolarsky in [10] are presented. The latter deal with a shape preserving approximation, in the uniform norm, of two functions (1/x) log coshx and (1/x) log(sinhx/x), x ≥ 0, by ratios of exponomials. The main mathematical tools employed include Gini means and the Stolarski means.