some plant extracts have been reported to exhibit antimicrobial properties. plant based pesticides appear to be an alternative for the synthetic pesticides because of their less dangerous impacts. the objective of this study was to assess the inhibitory activity of brassica napus water extract on mycelial growth of six phytopathogenic fungi rhizoctonia solani, phythophtora drechseleri, pythium ...

background: parasitic intestinal infections are still among socioeconomic prob­lems in the world, especially in developing countries like iran. food-handlers that directly deal with production and distribution of foods between societies are one of the most important sources to transmit parasitic infections to humans. the aim of this study was to determine the prevalence of intestinal parasitic ...

background: exposure to blood-borne pathogens from needle-stick and sharp injuries continues to pose a significant risk to health care workers. these events are of concern because of the risk to transmit blood-borne diseases such as hepatitis b virus, hepatitis c virus, and the human immunodeficiency virus. objective: to benchmark different risk factors associated with needle-stick incidents am...

The prevalences of various genotypes of enterotoxin gene-carrying (cpe-positive) Clostridium perfringens type A in 24 different food poisoning outbreaks were 75% (chromosomal IS1470-cpe), 21% (plasmid-borne IS1470-like-cpe), and 4% (plasmid-borne IS1151-cpe). These results show that C. perfringens type A carrying the plasmid-borne cpe is a common cause of food poisoning.

In this short note we establish global stability results for a four- dimensional nonlinear system that was developed in modeling a tick-borne disease by H.D. Gaff and L.J. Gross (Bull. Math. Biol., 69 (2007), 265-288) where local stability results were obtained. These results provide the parameter ranges for controlling long-term population and disease dynamics.

Article history: Received 23August 2013 Received in revised form 24