Relation Ship between Assertiveness , Psychological Well-Being, with Self Efficacy Among First Year Student Female Nurse

This study was a descriptive, correlation    study aiming   to  explore the relation between these dimensions of assertiveness , student nurse ’psychological well-being and self efficacy  while controlling for sex. The study was conducted in faculty of nursing ,Ain Shams university on 150   female student nurse .three tools instrument were used for collecting the data:  assertive behavior in nurses questionnaire, General Self-Efficacy Scale and General Health Questionnaire. The   main result revealed that the was a significant  correlation  among assertiveness, self efficacy  and psychological wellbeing .the present study recommend that   Implementing counseling services at faculty to help student to cope with academic, social and  Emotional stressors Keywords: assertiveness- self efficacy – psychological wellbeing – student nurs

A comprehensive review of midrange wireless power transfer using dielectric resonators

Magnetic resonant coupling (MRC) is one of the techniques that are widely used in wireless power transfer (WPT) systems. The technique is commonly used for enhancing distance while maintaining power transfer efficiency (PTE). Many studies have investigated new technologies to extend the distance of MRC while maintaining high PTE values. The most promising technique to date in MRC is the addition of a resonator between the transmitter and the receiver coil. The implementation of the resonator varies based on different designs, sizes, and material types, although the outcomes remain unsatisfactory. By introducing dielectric material resonators, PTE can be improved by lowering the ohmic loss which becomes a problem on conventional resonators. This study presents a general overview on the use of dielectric material as a resonator in MRC WPT technology and its technological development. The basic operation of MRC WPT is summarized with up-to-date technical improvements related to dielectric material as a resonator in the field of WPT. An overview of the current limitations and challenges of this technique is also highlighted in this study

Thermal Insulation and Mechanical Properties in the Presence of Glas Bubble in Fly Ash Geopolymer Paste

The density, compressive strength, and thermal insulation properties of fly ash geopolymer paste are reported. Novel insulation material of glass bubble was used as a replacement of fly ash binder to significantly enhance the mechanical and thermal properties compared to the geopolymer paste. The results showed that the density and compressive strength of 50% glass bubble was 1.45 g/cm3 and 42.5 MPa, respectively, meeting the standard requirement for structural concrete. Meanwhile, the compatibility of 50% glass bubbles tested showed that the thermal conductivity (0.898 W/mK), specific heat (2.141 MJ/m3 K), and thermal diffusivity (0.572 mm2 /s) in meeting the same requirement. The improvement of thermal insulation properties revealed the potential use of glass bubbles as an insulation material in construction material