---

Background: Streptococcus agalactiae, also known as Group B Streptococcus (GBS) is a commensal organism in the urogenital tract and rectum in approximately 25% of the healthy adult female population. The bacterium is the leading cause of bacterial meningitis, pneumonia, and sepsis in human infants.
Materials and Methods: Our study was performed over a three - month period from April to June 2014. Midstream specimens of urine were collected from outpatients suspected of having a bacterial urinary tract infection, which had not received any antibiotics. Group B Streptococci isolates were confirmed by typical colony morphology and identified by differential tests. Antibiotic susceptibility testing was carried out by disk diffusion method on Mueller Hinton agar (Merck, Germany) based on (CLSI) Guidelines 2012.
Results: GBS strains were isolated from 264 (21.1%) cases (out of 1249 positive bacterial urine cultures). The higher prevalence was recorded in the 15-44 and 45-64 age groups. Antibiotic susceptibility tests revealed that vancomycin, penicillin, and linezolid had the lowest, and tetracycline had the highest resistance rate.
Conclusion: In conclusion, the results of the present study confirm the universal susceptibility of GBS strains to the penicillin family and assert the use of penicillin or ampicillin as the first drug of choice for treatment and prophylaxis against GBS infections. However, it is important to perform antibiotic susceptibility testing whenever penicillin could not be prescribed.

---

---

The pressure-time method is a flow rate measurement technique generally employed in hydropower plants to evaluate the efficiency of hydraulic turbines. The 1D numerical simulation incorporating the finite volume method is employed to evaluate the method. The results are compared with the experimental data. The flow is simulated inside a straight pipe with Reynolds number Re=6.76×〖10〗^6. The flow rate reduction curve is employed for the simulation of the deceleration part of the flow, before valve closure, in the pressure-time method. The effective parameters on the flow rate calculation including the friction losses and the definition of the final time of the valve closure are studied in detail. The increase in the accuracy of the flow rate calculation is a function of the increase in the accuracy of the friction loss calculations. The effect of several friction factors proposed for the evaluation of the unsteady flow is studied on the accuracy of the flow rate calculation. The Pezzinga friction factor shows the least error in the flow rate calculation. The available methods to find out the final time of integration still show a large error. A new method is proposed for the flow rate estimation without any need to have the exact time of the valve closure with an acceptable accuracy.

---

Comparative advertising is one of the current methods of advertising goods and services. This method has been established Based on comparing products and services in the essential characteristics such as quality, raw materials, the effectiveness of the product or external elements such as price and warranty period. Comparison can be either explicit by mentioning the name and trademark of a competitor or it can only imply the comparison with other trademark. Different approaches have been adopted in different legal systems in relation to this phenomenon because on the one hand, comparative advertising can be effective in informing consumers and protecting their rights, and on the other hand it may overshadow the rights of other competitors. At first it was the French lawyers and their jurisprudence, that according to the general rules of civil liability and prohibition of misleading advertising Law, consider the comparative advertising as an example of unfair competition and so it was prohibited and punishable. However, eventually french Laws have been reformed and the this kind of advertising – by adapting some legal requirements- became legitimate. in European ::union:: comparative advertising had a similar story and after the ban, eventually with the guidelines issued by the European authorities, in compliance with the limits and conditions set forth in the guidelines, was legitimate. In Iranian Law and Islamic jurisprudence, there is no specific rules on this matter, but according to the general rules of Islamic jurisprudence, comparative advertising can be accepted as a  legitimate method of conduct.