June 2011
A note on hierarchy evolutionary game
Stochastic evolutionary game dynamics in hierarchy are very popular in economics and in management sciences. This study extends the model of stochastic evolutionary game dynamics. This paper highlights hierarchy selection model and we show that the hierarchy selection games are more stable without structures in this paper. Furthermore, an example in industrial organization is given to rationally explain the...
June 2011
Molecular subtyping of multiresistant community-associated methicillin-resistant Staphylococcus aureus isolates in Riyadh, Saudi Arabia
A total of 550 subjects from the community and 190 subjects from health care-related facilities in Riyadh, Saudi Arabia were evaluated for the prevalence of nasalStaphylococcus aureus colonization and to identify risk factors associated with S. aureusand methicillin-resistant S. aureus (MRSA) colonization. Among the community subjects,1% had nasal MRSA colonization. Subjects...
June 2011
Screening and induction of laccase activity in fungal species and its application in dye decolorization
A great deal of works has been carried out assessing dye-decolorization capabilities of fungi, but only few species were investigated. In this present study, ten fungal species were screened for laccase activity by indicator plate method, of which five species were found to be laccase-positive. Laccase activity varied during growth and maximal laccase activity was observed during the 9th day, except...
June 2011
The prevalence of cattle ringworm in native dairy farms of Sarab city (East Azarbayjan province), Iran
Ringworm is a fungal and zoonotic infectious disease, caused by different species of dermatophytes. Lesions of ringworm are usually found on the head, muzzle, ears, neck, and particularly, around the eyes of the infected animals. This study was conducted to determine the prevalence of cattle ringworm in native farms of Sarab city in Iran. A total number of 1150 cattle in native dairy farms of Sarab city were...
June 2011
Identification and characterization of 16 recent Chinese isolates of bovine viral diarrhea virus genotype 2 (BVDV-2)
Eighty calf blood samples were collected from different areas of China and were examined. Sixteen non cytopathic isolates of bovine viral diarrhea virus genotype 2 (BVDV-2) were isolated by specific BVDV-2-directed RT-PCR and sandwich ELISA. The results were verified by the indirect immunofluorescence assay and the ultra-thin sections. Genes of 5'-UTR, E2 and Npro from all the 16 field isolates were...
June 2011
Prevalence and antibiotics susceptibility patterns of some bacterial isolates from a street vended fruit product
The study is aimed to evaluate the food safety status of a street vended fruit product locally known as fruit chat. Sample collection was carried out from four groups of vendors which were discriminated based on their mobility, vending practice and storage facility. The extent of prevalence for Enterobacter species, Escherichia coli, Klebsiella species, Salmonella species,...
June 2011
Evaluation of gastric ulcer model based on gray-scale image analysis
Absolute alcohol, stress, pyloric ligation and others are well-rounded experimental gastric ulcer models widely used to evaluate the anti-ulcer activity of drugs (Wang et al., 2007; Zhang et al., 2007; Huang et al., 2004; Oyagi et al., 2010). In the model evaluation process, ulcer index is a more important indicator. So in this experiment, the absolute alcohol gastric ulcer model...
June 2011
Isolation and characterization of a novel streptomyces strain Eri11 exhibiting antioxidant activity from the rhizosphere of Rhizoma Curcumae Longae
In the present study, the phylogenetic analysis of the Streptomyces strain Eri11 isolated from the rhizosphere of Rhizoma Curcumae Longae and the antioxidant activity of the broth cultured with Eri11 were investigated. Analysis of 16S rDNA gene sequences demonstrated that the strains Eri11 was most closely related to representatives of the genera Streptomyces. The total phenols and...
June 2011
Species distribution and antibiotic sensitivity pattern of coagulase-negative Staphylococci other than Staphylococcus epidermidis isolated from various clinical specimens
This study was undertaken to determine the species distribution and antibiotic resistance patterns of coagulase-negative Staphylococci (CoNS) other than Staphylococcus epidermidis. A total of 142 CoNS (except S. epidermidis) strains were isolated from a variety of clinical specimens in neutropenic patients at the Bone Marrow Transplant Centre of Tunisia between 2002 and 2004. All CoNS...
June 2011
Evaluation of the correlation between Aflatoxin B1 production and Aspergillus contamination in rice bran from northern Iran
Aflatoxins are potent mycotoxins, which are produced by toxigenic Aspergillus species including Aspergillus flavus and Aspergillus parasiticus. The goals of this study were to characterize Aspergillus fungus isolated from rice bran and to determine the correlation between Aflatoxin B1 (AFB1) production and Aspergillus contamination in the samples....
June 2011
Physiological studies of cellulase complex enzymes of Aspergillus oryzae and characterization of carboxymethyl cellulase
Investigation of the production of cellulase complex enzymes by the fungus Aspergillus oryzae on soluble bio- cellulosic waste like cheese whey was the goal of this work. The effects of incubation period, substrate concentration, initial pH and temperature on the production of endoglucanase, exoglucanase and cellulase (filter paper activity FPA) activities, were investigated. Seven days incubation...
June 2011
Biodegradation of di-n-butyl phthalate by a newly isolated Diaphorobacter sp. strain QH-6
Di-n-butyl phthalate (DBP), one of the most popular phthalic acid esters (PAEs), is commonly found in wastewater treatment plant. In this study, a bacterial strain capable of using DBP as sole carbon and energy source was isolated from activated sludge. This strain was identified as Diaphorobacter sp., designated as QH-6, based on the 16S rRNA and gyrB gene sequence analysis. For the...
June 2011
Streptomyces sannurensis sp. nov., a new alkaliphilic member of the genus Streptomyces isolated from Wadi Sannur in Egypt
The taxonomic position of an actinomycete isolated from a soil sample collected from Wadi Sannur in Egypt was established using a polyphasic approach. The isolate, which was designated WS 51T, was shown to have chemical and morphological properties typical of streptomycetes. An almost complete 16S rDNAgene sequence of the strain was generated and compared with corresponding sequences of representative...
June 2011
Isolation and characterization of Acinetobacter sp. ND12 capable of degrading nicotine
A bacterium strain ND12, was isolated from the tobacco plantation soil and identified asAcinetobacter sp. based on its morphology, physiology, and 16S rRNA gene sequence. The isolate could utilize nicotine as the sole source of carbon and nitrogen, and completely degrade 1.0 g/L nicotine within 14 h at 28°C and pH 6.0. The optimum nicotine concentration for the growth of strain ND12 was 2.5 g/L....
June 2011
Antifungal and antiaflatoxigenic activities of some plant extracts
The efficiency of five methanolic plant extracts obtained from Euclayptus globolus, Olea europaea, Salvadora persica, Thymus vulgaris and Ziziphus spina-christi were investigated for their inhibitory effect on the growth and aflatoxin B1 production of the toxigenic Aspergillus flavus strain isolated from wheat seeds. Extract of T. vulgarisshowed the highest...
June 2011
Renal tissue damage due to Eimeria coecicola infection in rabbits
Coccidiosis causes considerable economic loss in the poultry industry. The study was designed to investigate the induced damage in renal tissue of rabbits infected with Eimeria coecicola sporulated oocysts. Animals were divided into two groups. The first group acted as the non-infected control group while the second group was infected with 50,000 E. coecicola sporulated oocysts. Infection...
June 2011
Effect of Tai Chi exercise on older people with nephritis
To evaluate the effect of Tai Chi exercise on older people with nephritis, 124 older people with nephritis were asked to practice Tai Chi exercise for 40 min once every day. Results showed that Tai Chi” quan exercise significantly decrease high-shear whole blood viscosity, low-shear whole blood viscosity, plasma viscosity, erythrocyte sedimentation rate (ESR), hematocrit (HCT), usea nitrogen, creatinine...
June 2011
In vitro antimicrobial activity of leaf extract of Berlina grandiflora Hutch. and Dalz.
Antimicrobial properties of Berlina grandiflora Hutch. and Dalz. leaf extract were investigated against both clinical and laboratory isolates. Susceptibility of these isolates to the extract was determined using disc diffusion method. The antimicrobial screening had wide range of activity on Escherichia coli, Stapylococcus aureus and Streptococcus spp. The diameter of zone...
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