nano structured materials have wide range of applications due to their interesting size-dependent chemical and physical properties compared to particles of size in the range of micrometer. copper oxide nano materials are of interest on account of their potential uses in many technological fields. in this study  cuo nanoparticles were synthesized via simple sol gel method using basic cuso4 as we...

background: lower respiratory tract infections are among important causes of morbidity and mortality for all age groups. the emergence of multidrug resistant gram-negative bacilli is an issue of increasing concern. materials and methods: a retrospective study including respiratory specimens (sputum and bal) was conducted in our tertiary care centre. samples were processed for microscopy, cultur...

Lysis by KOH and hydrolysis of L-alanine-4-nitroanilide were compared with the Gram reaction of aerobic, microaerophilic, and anaerobic bacteria. Both tests correlated well with the Gram reaction with nonfermentative bacilli and Bacillus species, whereas they did not correlate with nonsporulating anaerobes. Only campylobacteria were KOH positive and L-alanine-4-nitroanilide and gram negative.

from hygienic and economical point of view, drug therapy and prophylaxy in infectious diseases are of great importance. after the world war ii, a reduction in the efficacy of sulfonamide in the treatment of shigellosis was observed and later on it led to a survey on drug resistance and the way of its transmission. the aim of this survey, during which 100 cases of gram-negative bacteria were ide...

To the Editor—We read with great interest the report by Hsieh et al [1] in the 1 October 2009 issue of the journal on gram-negative prosthetic joint infections (GN PJIs). We congratulate the authors for their substantial contribution. The authors revealed that treating GN PJI with debridement was associated with a lower 2-year cumulative probability of success than treating gram-positive (GP) P...

Intestinal bacteria were classified as gram-positive or gram-negative by an electrode system with a basal plane pyrolytic graphite electrode and a porous nitrocellulose membrane filter to trap bacteria. When the potential of the graphite electrode was run in the range of 0 to 1.0 V versus the saturated calomel electrode (SCE), gram-positive bacteria gave peak currents at 0.65 to 0.69 V versus t...

Bacterial sepsis is a major cause of fatality worldwide. Sepsis is a multi-step process that involves an uncontrolled inflammatory response by the host cells that may result in multi organ failure and death. Both gram-negative and gram-positive bacteria play a major role in causing sepsis. These bacteria produce a range of virulence factors that enable them to escape the immune defenses and dis...