Application of AdS/CFT in Nuclear Physics

We review some recent progress in studying the nuclear physics especially nucleon-nucleon (NN) force within the gauge-gravity duality, in context of noncritical string theory. Our main focus is on the holographic QCD model based on the AdS6 background. We explain the noncritical holography model and obtain the vector-meson spectrum and pion decay constant. Also, we study the NN interaction in this frame and calculate the nucleonmeson coupling constants. A further topic covered is a toy model for calculating the light nuclei potential. In particular, we calculate the light nuclei binding energies and also excited energies of some available excited states. We compare our results with the results of other nuclear models and also with the experimental data. Moreover, we describe some other issues which are studied using the gauge-gravity duality

Extension of Nikiforov-Uvarov Method for the Solution of Heun Equation

We report an alternative method to solve second order differential equations which have at most four singular points. This method is developed by changing the degrees of the polynomials in the basic equation of Nikiforov-Uvarov (NU) method. This is called extended NU method for this paper. The eigenvalue solutions of Heun equation and confluent Heun equation are obtained via extended NU method. Some quantum mechanical problems such as Coulomb problem on a 3-sphere, two Coulombically repelling electrons on a sphere and hyperbolic double-well potential are investigated by this method

Pattern of Deliberate Self-Poisoning in Gorgan, North of Iran

Background: Suicide is a global public health problem. Deliberate Self-Poisoning (DSP) is one of the most common methods of suicide in many countries. This study was designed to identify the trends and characteristics of DSP in Gorgan.Methods: The study was carried out retrospectively in 5 Azar Hospital. It included 549 patients who were hospitalized in the hospital due to DSP from March 2008 to March 2015. Data were obtained from medical records. Stata software and Pearson's chi-squared test were used for data analysis.Results: Of 549 patients, 51% were females and 50.27% were aged 20–29 years. The majority of patients (76.68%) lived in urban areas. Poisoning occurred mostly in summer and the peak was observed in August. Most of the poisoning agents were pharmaceuticals (80.51%). Among the pharmaceuticals, benzodiazepines were involved most often. Overall, 21 patients (3.83%) died. The highest number of deaths was due to aluminum phosphide poisoning (76.19%). In addition, family quarrel was the main cause of DSP (43.17%). There were significant differences between the causes of DSP and demographics. Characteristics including gender, age groups, marital status, employment status and educational status.Conclusion: Deliberate self-poisoning (DSP) with drugs has recently been a serious social problem, especially in the younger generation in Gorgan and there is an urgent need for a prevention plan