Prevalence of Panton-valentine gene in Staphylococcus aureus isolated from clinical samples and healthy carriers in Gorgan city, north of Iran

Aim. Staphylococcus aureus (S. aureus) is a nosocomial and community acquired pathogen. S. aureus is a pathogen that causes several types of disease from skin infections to systemic diseases that is because of having several virulence factors such as enzymes, toxins, superantigens and Panton-Valentine leukocidin (pvl). pvl is a bi-component leukotoxin that destroy PMNs and monocytes and causes furunculosis, abscesses and necrotizing soft tissue infections in patients without any risk factors for such infections. The goal of this study was determine the prevalence of pvl gene in S. aureus isolated from patients and healthy carriers in Gorgan city, north of Iran. Methods. One hundred seventy isolates of S. aureus, 95 from patients and 75 healthy carriers, were collected during one year. After identification and purification, DNA extraction was done by phenol-chloroform method. Amplification of pvl gene was done by specific primer and polymerase chain reaction method. Results. Among the 170 isolates of S. aureus, 20 contained pvl gene. The frequency of isolates contained pvl gene in MRSA and MSSA isolates were 21.6, 19.3, which was not statistically significant. The frequency of these genes was not related to age, sex and source of isolation from patients. Conclusion. The frequency of pvl gene in this region were much higher than expected. © Copyright 2016 Edizioni Minerva Medica

Social Commerce and Consumer Intention to Purchase Evidence From Popular Social Networks in Iran

The aim of this study is to investigate the relationship of consumer behavior in s-commerce by proposing a research model that incorporates various factors. To conclude, perceived usefulness and perceived enjoyment have a positive relationship with attitude. The proposed model that examines the mediating effects of attitude on variables. It is reported that perceived usefulness could be mediated by the effect of attitude, however, perceived enjoy fullness doesn\u27t not. As with any study of this nature, a number of limitations have to be pointed out. The first limitation is the issue of generalization. Small sample size collected in this study lead to the poor-fit structural model. Thus, the findings must be interpreted with caution and cannot be conclusively used to generalize to all the consumer behavior towards s-commerce. The second limitation relates to the cross-sectional nature of the current study. Future research to investigate consumer behavior towards s-commerce by utilizing longitudinal methodology can be adopted. Also, variables such as trust could be added to capture more efficient results

Quantum teleportation with nonclassical correlated states in noninertial frames

Quantum teleportation is studied in noninertial frame, for fermionic case, when Alice and Bob share a general nonclassical correlated state. In noninertial frames two fidelities of teleportation are given. It is found that the average fidelity of teleportation from a separable and nonclassical correlated state is increasing with the amount of nonclassical correlation of the state. However, for any particular nonclassical correlated state, the fidelity of teleportation decreases by increasing the acceleration.Comment: 10 pages, 3 figures, expanded version to appear in Quantum Inf. Proces

Thermal stability of a special class of black hole solutions in F(R) gravity

In this paper, we work on the topological Lifshitz-like black hole solutions of a special class of vacuum $F(R)-$gravity that are static and spherically symmetric. We investigate geometric and thermodynamic properties of the solutions with due respect to the validity of the first law of thermodynamics. We examine the van der Waals like behavior for asymptotically AdS solutions with spherical horizon by studying the $P-v$, $G-T$ and $C_{Q,P}-r_{+}$ diagrams and find a consistent result. We also investigate the same behavior for hyperbolic horizon and interestingly find that the system under study can experience a phase transition with negative temperature.Comment: 14 pages with 7 captioned figures. Some additional notes are added. Accepted in EPJ

Critical gap analysis of merging sections at Kuala Lumpur middle ring road

At merging sections, drivers normally slow down and sometimes need to stop while seeking a suitable gap before merging with the mainstream. Thus, there will always be several observed rejected gaps and an accepted gap which can be used to determine the smallest average gap, so-called critical gap. This study was carried out to determine critical gap values at selected merging sections at the Jalan Tun Razak and the DUKE Expressway uses the Maximum Likelihood method. Data were collected by using videotaping method and the gap acceptance data were extracted for analysis. A gap acceptance event at highway merging sections in this study was redefined due to unavailability of stopping vehicles at the ramp junction. Therefore, the gap data were estimated starting from a ramp’s vehicle passing the end of gore marking to where it merges with the mainstream. The analysis of the critical gap takes into consideration accepted gaps greater than 5 seconds to avoid forced entry due to lead impedance of successive vehicles on mainstream. The critical gap values obtained in this study, according to vehicle classification were ranged between 4.5 to 5.0 seconds, which are slightly smaller if compared to critical gap values for particularly left turn from minor movement at priority junction of the Arahan Teknik (Jalan) 11/87 and the United States Highway Capacity Manual 2000. The findings shall help to study driving behavior of local drivers, especially at priority control facilities such as merging sections

Comparison of four ways in treatment of acute conversion disorder

چکیده: زمینه و هدف: با وجود شیوع قابل توجه اختلال تبدیلی توافق چندانی در مورد مؤثرترین روش درمان آن وجود ندارد. این مطالعه با هدف مقایسه اثر بخشی چهار روش درمانی اختلال تبدیلی حاد و عود یکماهه آن انجام شد. روش بررسی: در این مطالعه کارآزمایی بالینی 80 بیمار مبتلا به اختلال تبدیلی حاد به روش نمونه گیری آسان انتخاب و به صورت تصادفی تحت درمان با چهار روش تلقین، آرامسازی عضلانی ساده، هیپنوز و تزریق وریدی دیازپام قرار گرفتند. سرعت حذف علامت، فراوانی بهبودی و عود یک ماهه در آنها مقایسه و داده ها به وسیله آزمون های کای دو، فیشر و آنکوا تجزیه و تحلیل گردید. یافته ها: میانگین زمان بهبودی در روش آرامسازی عضلانی نسبت به روش تزریق دیازپام و هیپنوز بطور معنی داری کمتر بود (05/0

Comparison of four ways in treatment of acute conversion disorder

Abstract: (10784 Views) Background and aim: In spite of high prevalence of conversion disorder, there is no widely acceptable effective treatment for it. In this study, we compared four ways of treatment in acute conversion disorder and it’s recurrent after one month. Methods: In a clinical trial study, we selected 80 patients with acute conversion disorder using simple sampling method. They were divided randomly into four treatment groups. (Suggestion, simple muscle relaxation, hypnosis, and diazepam injection) The speed of syndrome elimination, recovery frequency, and one month’s recurrence were compared. The results were analyzed with chi-square, Fisher’s exact test and ANOVA. Results: Mean recovery time was significantly less in muscle relaxation group compared to the hypnosis and diazepam injection groups (P<0.05). In patients with co-morbidity, the mean recovery time was shorter than the mean recovery time in none co-morbidity (P<0.05). There was no significant relation between one month recurrent and way of treatment or other variables. Conclusion: All four ways of treatments bring significant recovery, but in muscle relaxation, recovery is faster than hypnosis and diazepam infusio

Influence of NaCl salinity on growth analysis of strawberry cv. Camarosa

In order to study of salinity effect on growth analysis of strawberry, a greenhouse experiment was conducted in Vali-e-Asr University of Rafsanjan in 2010. This study was carried out RCBD design with 4 replications to determine the influence of salinity (30, 60, 90 Mmol and control with distilled water) on strawberry growth analysis. Results indicated that relative growth rate (RGR), crop growth rate (CGR), leaf area ratio (LAR) and dry matter accumulation were decreased with increasing salinity. The lowest RGR, CGR and LAR were observed in 90 Mmol NaCl salinity. Results also indicated that maximum dry matter accumulations were observed in 1050, 1200 and 1400 degree days in 30, 60 and 90 Mmol NaCl salinity, respectively. Water salinity more than 30 Mmol NaCl L-1 will decreased fresh fruit yield more than 50 percent in hydroponics strawberry production. Dry mass partitioning in NaCl-stressed plants was in favor of crown and petioles and at expense of root, stem and leaf whereas leaf, stem and root DM progressively declined with an increase in salinity