ABSTRACT Background: resin cement type and intraoral temperature fluctuations may affect the fracture performance of successful zirconia restorations. To fill this gap, the purpose of this study is to evaluate and compare the influence of thermocycling on fracture resistance and mode of failure of monolithic zirconia crowns luted with Rely X™ U200 and BreezeTMself-adhesive resin cements as well as imply the effect of adding 2 % of polylysine (PLS) to these cements. Materials: 64 maxillary premolars were milled out of zirconia blocks using CAD/CAM milling system. They were divided into four groups (n = 16) according to the cement type. Four different resin cements were used (RelyXTMU200, Breeze™, RelyX™ U200 with 2 % PLS

In this paper, Pentacene based-organic field effect transistors (OFETs) by using different layers (monolayer, bilayer and trilayer) for three different gate insulators (ZrO2, PVA and CYEPL) were studied its current–voltage (I-V) characteristics by using the gradual-channel approximation model. The device exhibits a typical output curve of a field-effect transistor (FET). Source-drain voltage (Vds) was also investigated to study the effects of gate dielectric on electrical performance for OFET. The effect of capacitancesemiconductor in performance OFETs was considered. The values of current and transconductance which calculated using MATLAB simulation. It exhibited a value of current increase with increasing source-drain voltage.

This paper aims to investigate the flexural behavior of reinforced concrete beams considering fire resistance by adding Lightweight Expanded Clay Aggregates (LECA) to the concrete mix as partial coarse aggregate replacement. LECA is a type of porous clay with a uniform pore structure with fine, closed cells and hard, tightly sintered skin. The experimental work comprised four reinforced self-compacted concrete beams. All the specimens were identical in their geometrical layout of 1600×240×200 mm, reinforcement details, and support condition (simply supported). For all the beams, the main reinforcement was provided by two bars, each having a diameter of 12 mm, while a bar of 6 mm diameter was employed for the top and shear reinforc

The Spotlight Effect, defined as individuals' tendency to overestimate the extent to which others notice and evaluate them, has important implications for psychological functioning, social interaction, and performance in educational and sport environments. Despite previous studies have addressed the Spotlight Effect theoretically and empirically, no validated instrument has been specifically developed to assess this construct especially among students of Colleges of Physical Education and Sport Sciences. This study aimed to develop and validate a Spotlight Effect Scale and establishing normative levels for its interpretation. The descriptive survey approach was used, involving 555 students from Colleges of Physical Education and Spo

We conducted this study at the Department of Veterinary Public Health, College of Veterinary Medicine, University of Baghdad over a period of 4 months to evaluate the effect of adding vitamin AD3E, folic acid, Selenium (Se), and Zinc (Zn) as dietary supplements on hematological and biochemical parameters of laying hens during the production period. A total of 105 commercial Lohmann Brown laying hens were used and divided into seven treatment groups (15 hens per group), which were T1: control group fed basal diet; T2: AD3E (1 g/kg feed) + basal diet, T3: folic acid (15 mg/kg feed) + basal diet T4: Zn (120 mg/kg feed) + Se (0.2 mg/kg feed) + basal diet, T5: AD3E + folic acid + basal diet, T6: AD3E + Se + Zn + basal diet, T7: AD3E + folic acid