Objectives To determine the incidence of crack formation and propagation in apical root dentin after retreatment procedures performed using ProTaper Universal Retreatment (PTR), Mtwo-R, ProTaper Next (PTN), and Twisted File Adaptive (TFA) systems. Materials and Methods The study consisted of 120 extracted mandibular premolars. One millimeter from the apex of each tooth was ground perpendicula...

most popular sources for electromagnetic waves. However, there are many concerns regarding their biological effects on the body, especially the central nervous system. Therefore, the aim of this study was to evaluate the effects of cell phone radiation on histology of the cerebellar granular cells in the neonatal rat. Materials and methods: We selected some Wistar rats. Then, we randomly d...

the purpose of the present study mediating role of psychological empowerment of employees in relation to the effective management and organizational excellence.this research is based on the target application is based on a description of the method of data collection survey. the population of the city of hamadan university research represents all employees, sample using cochran's formula f...

the present study aims at studying the relationship between social capital and organizational performance. this is an applied research and in terms of data collection method, it is an descriptive survey. statistical population are official employees with diploma and upper certificate and faculty members of zangan university. sapmles were 115. data collection tool is questionnaire. to analyze da...

The main purpose of this research article is to find out the impact of paternalistic leadership on the employee’s outcome in the banking sector of Pakistan. From the previous researches it is speculated that paternalistic leadership and employee outcome have a positive connection. For data collection questionnaire and convenient sampling method was used. 260 questionnaires were filled in total....

The study sought to assess the reading habits among students and their effects on their academic performance. The study was conducted in Koforidua Polytechnic situated in the Eastern Region of Ghana. A questionnaire was used for the data collection. The data collected were analyzed quantitatively with the use of Statistical Package for Social Science (SPSS). Figures and tables were used to pres...

Motorcycle accidents contribute significantly to the number of road traffic accidents (RTAs) in many cities in southern Nigeria. This study was carried out to determine the prevalence and pattern of RTAs among commercial motorcyclists in a city in southern Nigeria. A descriptive, cross sectional study was carried out among motorcyclists in 2010 in Ikot Ekpene, Southern Nigeria. The instrument o...