The purpose of this study was to investigate the effect of using computer simulation to develop physics problems solving skills for second class’ students in secondary schools at Sana'a state and their attitudes towards Physics. To fulfill this goal, two scales were built; scale of physics problems solving skills, and scale of attitudes towar

The optimum conditions for immobilization of β-Glucosidase on multiwalled carbon nanotubes (MWCNTs) and Ca-alginate beads were studied. The effectiveness of the reaction of the immobilized enzyme with pnitrophenyl-β-D-glucopyranoside as substrate is evaluated. For the same substrate concentration the activity of enzyme immobilized in Ca-alginate

Antihypertensive therapy reduces the risk of cardiovascular events among high-risk persons and among those with a systolic blood pressure of 160 mm Hg or higher,but its role in persons at intermediate risk and with lower blood pressure is unclear In one comparison from a 2-by-2 factorial trial, we randomly assigned 12,705 participants at intermedia

Synthesized iron oxide, α-Fe2O3 used for CO2 capturing was prepared by a simple mixing method and calcined at temperatures in a range of 350 – 850 °C. CO2 adsorption isotherms at 25 °C and 1 atm found that the sample namely s450 that calcined at 450 °C gave the highest CO2 adsorption activity with the adsorption capacity of 17.0 mgCO2/gadsorb

This book introduces a new paradigm called ‘Optimization in Changeable Spaces’ (OCS) as a useful tool for decision making and problem solving. It illustrates how OCS incorporates, searches, and constructively restructures the parameters, tangible and intangible, involved in the process of decision making. The book elaborates on OCS problems tha

Introduction: Dens evaginatus (DE) is a developmental anomaly. It is an extra cusp or tubercle protrudes from the occlusal surface of posterior teeth, as well as the lingual surface of anterior teeth. Tubercles are susceptible to pulp exposure from wear or fracture because of malocclusion, leading to pulpal complications early after eruption. DE ma

Introduction: Hearing impairment has been listed as one of the health risks associated with scuba diving. Evidence of hearing loss associated with inner ear barotrauma was found in previous studies. This cross-sectional study investigates the relationship between hearing status and years, depth and total hours of diving. Methods: Thirty male divers

Malaysia with its socio-cultural structure is one of the rare unity that can exemplify many countries because of her ability to live in peace and tranquillity with multi-religious, multilingual and multicultural societies. Considering this multi-culturalism, multi-religion and multi-lingual as a wealth, thus they are struggling together to create a

Most of Probabilistic Load Flow (PLF) studies with consideration of generation and load uncertainties concern with reducing efforts computational in addition high accuracy. One of the most famous expansion method used is Gram-Charlier and Comulants. This paper proposed a Probabilistic Collocation Method (PCM) to improve the common used PLF computat

Fade mitigation technique (FMT) is a method to overcome the rain fade effects in microwave communication link. The frequency diversity method using switching technique was used and implemented in this research. The frequency diversity improvement factor (FDIF) proposed by ITU-R was analysed using measured data. The measurement was used as a benchma