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Effect of two designs of implantsupported overdentures on peri-implant and posterior mandibular bone resorptions: a 5-year prospective radiographic study
No full textObjectives: The aim of this study was to evaluate and compare the effect of two designs of
implant-supported overdentures on peri-implant and posterior mandibular bone resorptions after
5 years of follow-up.
Materials and methods: Twenty edentulous patients were randomly assigned into two
equal groups: Group I (GI), patients received overdentures supported and retained by
cantilevered bars on two canine implants and Group II (GII), patients received overdentures
retained by straight bars on two canine implants and supported by two-first molar implants.
Peri-implant vertical (VBL) and horizontal (HBLO) bone losses were assessed on periapical
radiographs at the time of overdenture insertion (T0), 6 months (T6 m), 1 year (T1), 3 years (T3),
and 5 years (T5) after insertion. Posterior mandibular bone resorption was evaluated using
proportional measurements (posterior area index, PAI) made on panoramic radiographs at T0
and T5.
Results: Group I recorded significant higher VBL than GII. VBL increased significantly with advance
of time in both groups. Posterior implant recorded significant higher VBL than anterior implants in
GII. HBLO did not differ significantly between groups or between observation times. Group I
recorded significant higher PAI than GII at T5. Group, age, and initial height of the mandibular
ridge were significantly correlated with PAI.
Conclusion: Within the limitations of this study, regarding the small sample size, it could be
concluded that overdentures retained by straight bars on two canine implants and supported by
two-first molar implants present a clinical advantage in terms of peri-implant and posterior
mandibular bone preservation compared to overdentures supported and retained by cantilevered
bars on two canine implants after 5 years
Smart elevator system
No full textSmart elevators are designed to transform the simple act of traveling between floors. Instead of pushing a button to go up or down, passengers first select the floor the directed to the elevator that will take them to their destination with the fewest number of stops which will result in both energy and time saving ey, then they are The objective of this work is to design and implement a model for smart elevators system composed of two units which will serve a five floor building. In order to achieve this objective, the necessary sensors and actuators are integrated to a smart control system. Two different independent methods are considered which are a microcontroller and a PLC units. Safety precautions are taken in consideration as in fire, overweight, and door closure. The system shows its applicability with either the microcontroller alone or the PLC. The microcontroller system is more flexible whole the PLC proves its reliability and rigidness in operation.Hossam eldin , yehia hendaw
Introduction to clinical pharmacology / Marilyn Winterton Edmunds, PhD, ANP/GNP, Adjunct faculty, Johns Hopkins University School of Nursing, Baltimore, Maryland.
No full textIncludes bibliographical references and index.xiv, 482 pages
Speed Control of High Performance Brushless DC Motor
No full textThis thesis proposes the design and implementation of four different advanced control techniques. The controller objective to achieve a good speed regulation/tracking of BLDC motor, regardless the presence of external disturbances and/or parameters variation. The first technique is GA-based PID controller, in which the genetic algorithm (GA) optimization technique is used to determine the proper PID controller parameters. In this thesis three different cost functions are tested during optimization process. Although, GA optimization technique improves the overall performance of the PID controller, but it has poor performance in case of sudden change in operating point and parameters variation. So, the second technique is a self-tuning fuzzy PID control in which the PID controller parameters are continuously changing to satisfy the required performance. The main role of the fuzzy logic control adjusts the PID controller parameters online, according to the error and the change of error. The third technique is a model reference adaptive control (MRAC), where the desired performance is expressed in terms of a reference model. The MRAC is known with its fast response. On other hand, it suffers from high overshoot. This disadvantage can be alleviated using the fourth control technique. The fourth technique is a new hybrid control technique (MRAC with PID compensator), in which the controller action depends on both the MRAC and the PID compensator. In this technique, the fast response will be achieved without high overshoot. A complete simulation for the advanced control techniques has been studied. A hardware has been implemented to verify the theoretical study. The simulation as well as the experimental results are agreed well. Both simulation and experimental results clarify that the MRAC with PID compensator has the best performance compared to the different studied technique
Folic Acid Loaded Lipid Nano carriers with Promoted Skin Antiaging and Antioxidant Efficacy
No full textAgeing is the progressive deterioration of physiological functions in organisms. Folic acid (FA) can be used as antiaging. The objective of this research is the feasibility of topical delivery of FA using nanostructured lipid carriers (NLCs) to offer sustained antioxidant and antiaging effects. FA NLCS were prepared by hot high pressure homogenization. Encapsulation efficiency (EE), in vitro release, ex vivo permeation and skin targeting were evaluated. Characterization of selected formulations was assessed, together with stability and water occlusion. Further, histology and antioxidant potential were evaluated. EE exceeded 95%. Formulations with 30% oil showed maximum skin targeting, water occlusion and high efficiency of hydration and antioxidant potential. Incorporation of oil into solid lipids causes more imperfections in the crystal lattice, providing high drug encapsulation. The small particle size leads to forming a depot in the skin providing efficient skin targeting, water occlusion, antiaging and antioxidant effects especially for the 30% oil containing formula; F11. The results emphasize the success of topical application of FA NLCs. F11 represents a promising, stable preparation, achieving remarkable long acting skin hydration, in vitro and ex vivo antioxidant potential lasting for >4 days
نحو تحليل الإنفعالات في مجال إستطلاع الرأى
No full textEmotion analysis and Opinion mining from text play an important role in many fields nowadays. Their importance comes from many perspectives; Governments need to know the impact of some economic and political decisions, companies need to get the feedback on their new products, other people need to know others opinions before buying any new thing. These Opinions besides the emotions incorporated in blogs, reviews on products and social media represent a valuable resource of information for decision makers. The aim of the thesis is to propose an emotion approach and suggest a framework for classifying the text based on its emotions such as (Anger, Disgust, Fear, Joy, Sadness and Surprise).These emotions come under two main opinion classes; they are (positive and negative). To accomplish this work, first, a comparison is performed between different emotion analysis techniques to classify the strengths and weaknesses which formulate the research objectives. Two main objectives have been addressed first, improving emotion classification accuracy by using a hybrid approach by using Information Retrieval, Machine Learning and Lexicon based techniques. Second, identify a way to automatically enrich a lexicon, which used in these types of problems. Lexicon enrichment enhances terms classification among different emotions. Different datasets used for validating system adaptability. The evaluation to the approach will be measured according to Precision, Recall and F-measure. The proposed approach gives promising results compared with other researches documented in this research
Exploring the factors affecting MOOC retention: A survey study
No full textMassive Open Online Courses (MOOCs) hold the potential to open up educational opportunities to a global audience. However, evidence suggests that only a small proportion of MOOC participants go on to complete their courses and relatively little is understood about the MOOC design and implementation factors that influence retention. This paper reports a survey study of 379 participants enrolled at university in Cairo who were encouraged to take a MOOC of their own choice as part of their development. 122 participants (32.2%) went onto to complete an entire course. There were no significant differences in completion rates by gender, level of study (undergraduate or postgraduate) or MOOC platform. A post-MOOC survey of students' perceptions found that MOOC Course Content was a significant predictor of MOOC retention, with the relationship mediated by the effect of content on the Perceived Effectiveness of the course. Interaction with the instructor of the MOOC was also found to be significant predictor of MOOC retention. Overall these constructs explained 79% of the variance in MOOC retention
FUE Movie
No full textHead Masters Of CollegesFuture University in Egypt is one of the newest and most promising private universities in Egypt. The FUE campus is conveniently located in the heart of New Cairo. Through excellence in teaching, research and service, Future University strives to provide a comprehensive, high-quality education that prepares our graduates to be future leaders. The campus provides a creative, nurturing environment where students can realize their potential while learning from a talented, well-qualified faculty. Future University offers a rich and rewarding educational experience.Future University In Egyp
Energy management principles : applications, benefits, savings / Craig B Smith, Kelly Parmenter.
No full textincludes index.xiii, 660 pages ;Energy Management Principles: Applications, Benefits, Savings, Second Edition is a comprehensive guide to the fundamental principles and systematic...
processes of maintaining and improving energy efficiency and reducing waste. Fully revised and updated with analysis of world energy utilization, incentives and utility rates, and new content highlighting how energy efficiency can be achieved through 1 of 16 outlined principles and programs, the book presents cost effective analysis, case studies, global examples, and guidance on building and site auditing. This fully revised edition provides a theoretical basis for conservation, as well as the avenues for its application, and by doing so, outlines the potential for cost reductions through an analysis of inefficiencies.Provides extensive coverage of all major fundamental energy management principlesApplies general principles to all major components of energy use, such as HVAC, electrical end use and lighting, and transportationDescribes how to initiate an energy management program for a building, a process, a farm or an industrial facilit
Porto New Cairo
No full textlocated in New Cairo 5st settlement area in the 90th street in front of the main entrance of the American University in Cairo and next to the Future University in Egypt. The project is built on an area of 55,000 M2 with a built up area of 11,000 m2.A hotel buildings belonging to the series dedicated to business tourism Port