Flexibility and rigidity of biopolymers in mechanical structure have been investigated several times. Persistence length of a polymer is an exact factor to specify value of flexibility. No doubt that existence of charge on the polymers would have effect on the value of flexibility and therefore change in the persistence length of the polymer. In this study, by use of molecular dynamic simulation and Gaussian chain model (bead-spring model), we have investigated the effect of electric charge and salt concentration on the persistence length of the biopolymers in the cell. This simulation has been able to provide acceptable detail in the results.

Introduction: Central vein catheterization is a standard clinical method for central venous pressure monitoring besides being used for other therapeutic purposes. The present guidelines recommend to place the catheter tip in the superior vena cava above the pericardial cephalic reflection. The aim of this study was to compare the accuracy of two different approaches in locating the tip of the CVC at the suggested vascular zone.Material and methods: This was an interventional study on 100 patients undergoing CABG operation who required a central venous cannulation. They were randomly assigned into two groups. In the first group catheter placement was applied through using the conventional 15 cm method. In the second group a Clength method was applied for measuring the depth of catheter tip insertion from the preoperative chest radiographs. For statistical analysis Chi-square test and T-test were used (SPSS v.22 software).Results: In the first group (15 cm) 100% of the patients had their catheters placed below the C-line (Carina line) and the average distance between the catheter tip and the C-line was 4.22±2.10 cm. In the second (CLength) group 52% of the catheters were below C-line with an average distance of 0.77±0.5 cm. There was a meaningful difference between the two groups in respect to the catheter location depth and zone placement. (P=0.00) Conclusion: The C-Length approach in comparison to the conventional 15 cm approach resulted in a considerable higher number of catheters above the recommended C-line, thus it can provide a more reliable and safe mode for CVC placement in the SVC.

Not only enhance the attractiveness of e-service quality, and extended free choice, and compare product information display is Safe and secure environment but also enhance customer loyality and customer satisfaction and therefore loyalty is to the company. Today, banks are trying for attract customers and maintain their market share by delivering the innovative services using e-banking. Banks always increase new electronic channels into their current services. Because of the loyal customers is the main factor of organizational success, obtaining Loyalty is the concept that in today's business has been considered by organizations. In this study different parts of customer experience management that include functional, mechanic and humanic Clues are evaluated also its relationship with customer loyalty in e-banking services examined. The result showed there is positive correlation between different parts of CEM and Continuous use in e-banking services. In this study, questionnaires were used for data collection. Respectively, to identify and prioritize determinative factors, correlation analysis and artificial neural networks were used. Results showed that in order of importance, Quality of service, loyalty, trust, satisfaction, customer expectations, attractiveness, competence of staff, ease of use are factors that determine customers’ repeat patronage of e-banking services.

Mutual fund persistence is well documented in the finance literature, but not well explained. The purpose of this paper is to examine the performance persistence of a large sample ofmutual funds over time. Specifically do mutual fund managers show positive (negative) performanceyear after year?Accordingly in light of random walk, strong form of efficiency can be tested through the study of the persistence in mutual funds performance. In this paper, the performance consistency for 62 mutual funds, from April 2008 to March 2014, is examined. Our findings indicate the strong form of efficiency from evidence Tehran Stock Exchange.

We are... So, to reframe the inquiry: who are we on a metaphysical level? Which aspects of ourselves are the most universally representative of who we are? How do we fare in the face of the passage of time? For decades, philosophers have debated the concept of diachronic personal identity, which focuses on the question of what keeps us alive. An intricate debate has developed between those who hold the body view (animalism) and those who hold the psychological view (memory) on the question of who we are. The two groups will eventually become so firmly set in their views that they will be unable to compromise. Hylomorphic animalism, or the view that humans are rational animals, living bodies made of prime matter and a rational soul, is an alternative answer to this divisive question that I propose in this study, following in the footsteps of Aristotle and Aquinas. We only survive if matter and rational souls do.