1,721,609 research outputs found
Interview with Sayed Mohamed Sayed
No full textمقابلة مع الفنان التشكيلى المصري سيد محمد سيد حول معرضه الجديد بدار الأوبرا المصرية رقم ١٥ وهو بعنوان "المنزل". قامت بالمقابلة درية شرف الدين.An interview with Egyptian artist Sayed Mohamed Sayed about his new exhibition at the Egyptian Opera House No. 15, which is titled "The House". The interview was conducted by Doria Sharaf El-Din
Interview with Sayed Mohamed Ahmed
No full textمقابلة بين المراسلة عائشه رافع والصحفي والمحلل السياسي المصري سيد محمد أحمد حول تاثير العمليات العسكريه في لبنان علي عملية السلام في الشرق الأوسط والزيارة المرتقبة بعد أيام لوزير الخارجية الأمريكي ورن كريستوفر في المنطقة.An interview between Aisha Rafie and Egyptian writer and political commentator Sayed Mohamed Ahmed about the impact of military operations in Lebanon on the Middle East peace process, as well as US Secretary of State Warren Christopher's scheduled visit to the region
Interview with Adel Thabet; Ahmed Abdel-Hafiz, Hassan Ghoneim, and Sayed Mohamed Sayed
No full textلقاءات مع الفنان التشكيلي السعودي الدكتور عبد الحليم رضوي حول إقامة معرض للفن التشكيلي يضم عدد من الفنانين المصريين وهم; عادل ثابت، أحمد عبد الحفيظ وحسن غنيم و سيد محمد سيد. قام بهذه اللقاءات حسن شمس الدين.An interview with Saudi artist Abdulhalim Radwi about holding an exhibition featuring several Egyptian artists like Adel Thabet, Ahmed Abdel-Hafiz, Hassan Ghoneim, and Sayed Mohamed Sayed. Interview conducted by Hassan Shams El Din
Technical secondary education in Egypt with special reference to rates of return of investment
No full textThe study attempts to investigate how far is it profitable for Egyptian individuals and Egyptian society to invest in technical secondary education. The main purposes of the study are, to measure the profitability of different kinds of technical secondary education in Egypt, both for individuals and for society, using the rate of return to investment as a measurement of profitability, and to compare with each other the rates of return to different kinds of technical secondary education. For these purposes the cost-benefit analysis technique is adopted which involves measurement of benefits, measurement of costs and finally calculating rates of return. For the measurement of benefits, concentration is directed to the direct monetary benefits represented in additional earnings as a result of education as the most important identifiable return to education. Earnings data are derived from a cross-sectional sample of 2116 graduates of technical and basic education in Egypt working in the governmental sector and 745 graduates of technical and basic education employed by the public sector. Lifetime age earnings profiles are constructed for the different groups and categories and earnings differentials are estimated both for individuals and society. Costs of technical secondary education in Egypt are classified into private and social costs and the unit of cost is decided to be that of the student per year. For the purpose of estimating the direct private costs a questionnaire was administered to a sample of 1925 students of the different kinds of technical secondary education, in three different regions in Egypt. An interview schedule was also used to collect data about the same items of costs of the questionnaire, of a sample of 229 students from the sample of the questionnaire with the purpose of checking the reliability of the cost data collected by the questionnaire. Data collected were statistically analysed using a computer run for a two-sample analysis in which the statistics were computed, based on a null hypothesis and added to earnings foregone before taxation to get an estimation of the private costs of technical secondary education in Egypt. Estimation of the social costs of technical secondary education in Egypt is based on data of public expenditure by the state supplied by the Ministry of Education in Egypt. Estimates of both private and social costs are used in estimating the internal rates of return by the use of the internal rate of return (IROR) measure. The internal rates of return are then calculated (at the margin) for both individuals (private rates of return) and for society (social rates of return) as crude rates, for the three different kinds of technical secondary education in Egypt. Rates of return are then adjusted for: Alpha Coefficient, unemployment, wastage, future economic growth and additional payments. Representative private rates of return, (at the margin) are: 7.51%, 7.43% and 7.61% for industrial, commercial and agricultural education, respectively, for working in the governmental sector; and 16.85%, 16.71% and 17.02% for industrial, commercial and agricultural education, respectively, for working in the public sector. Social rates of return (at the margin) are: 4.55%, 4.76% and 4.66% for industrial, commercial and agricultural education, respectively, for working in the governmental sector; and 11.82%, 12.15% and 11.98% for industrial, commercial, and agricultural education, respectively, for working in the public sector. The discussion of these rates in comparison with the prevailing interest rates showed that technical secondary education in Egypt represents profitable chances of investment for individuals if they join work in the public sector but represents unprofitable investment if individuals join the governmental sector for work, while it represents a very weak profitable chances of investment for the society if the graduates are employed by the public sector, and represents a totally unprofitable investment for the society if graduates are employed by the governmental sector. Discussion also showed that there are no significant differences between rates of return to different kinds of technical secondary education in Egypt. (D82733)</p
Convenient Strategies for Using 3D Interactive Experiences in Museums. A case study of Mallawi Museum, Egypt
Full text linkL'abstract è presente nell'allegato / the abstract is in the attachmen
Bio diesel production, utilisation and by-product processing
Full text linkA major challenge mankind is facing in this century is the gradual and inescapable
exhaustion of the earth's fossil energy resources. The combustion of those fossil
energy materials lavishly used as heating or transportation fuel is one of the key
factors responsible for global warming. One of the most readily applicable alternative
energy resources is biodiesel, which is a potential substitute for petroleum-based
diesel fuel. Biodiesel is made from renewable biomass mainly by alkali-catalysed
transesterification of plant oils. Biodiesel offers a number of interesting and attractive
beneficial properties compared to conventional petroleum-based diesel. Most
importantly, the use of biodiesel maintains a balanced carbon dioxide cycle since it
is based on renewable biological materials. Pure biodiesel or biodiesel mixed in any
ratio with petroleum-based diesel can be used in conventional diesel engines with no
or only marginal modifications, and it can be distributed using the existing
infrastructure.
A number of aspects of biodiesel production, by-product glycerol utilization and
utilisation in a test diesel engine facility are examined in the work described here.
The kinetics of biodiesel production by transesterification of plant oils with methanol
are described with reference to a novel solubility model that took into account the
phase behaviour of the reacting mixture. It was revealed that the formation of
methyl esters during the course of reaction promotes the dissolution of the oil in the
methanol phase. Using ternary phase diagrams (oil/methanol/methyl esters) a new
kinetic model that accounts for product-facilitated oil dissolution was developed. The
model described the experimentally obtained kinetics well and scope for further
future improvements to the model were identified.
The microbial conversion of by-product glycerol to alcohols could potentially reduce
dependency on methanol and improve process economics by re-cycling what will
increasingly become a waste product as biodiesel production gains greater prominence. Two species of bacteria, Pantoea agglomerans and Clostridium
pasteuranium were used in a fully instrumented bioreactor to investigate conversion
of glycerols to alcohols. Overall alcohol yields were promising and it is possible that
optimising the fermentation conditions for P. agglomerans still further could result in
still higher alcohol yields.
Bio diesel fuels in pure form and blended with mineral diesel in this study were
tested in a four cylinder direct injection engine, typically used in small diesel genset
applications. Engine performance and emissions were recorded at five load
conditions and at two different speeds. Results were obtained for measurements of
emission and smoke at the different speed and load conditions for the different bio
diesel fuels The findings show that there is an increase in the over all specific fuel
consumption at higher blends of bio diesel, but emissions were reduced at all blends
and oils used with the exception of NOx which increased. A simple combustion
analysis was also performed where ignition delay, position and magnitude of peak
cylinder pressure and heat release rate were examined to asses how the variation of
chemical structure and blend percentage affects engine performance
Technical implications of neglecting compositional grading effects in petroleum reservoir simulation models
Full text linkMost compositional reservoir simulation practices assume that the compositions of various fluid components are the same at all locations within the reservoir system. This constant composition assumption is incorrect and unrealistic as it grossly ignores the occurrences of some less obvious physical processes in the reservoir. Gravitational force, temperature gradient, and thermal diffusion, among other factors, contribute to distribution and gradation of hydrocarbon fluid compositions in the reservoir. Therefore, incorporating compositional grading models that adequately account for the individual and combined effects of gravity force, temperature gradient, and thermal diffusion is crucial when initializing reservoir simulation models. This research seeks to elucidate the technical implications of compositional grading on improved reserve estimation and reservoir performance prediction. The mathematical framework for the compositional grading modeling is based on one-dimensional zero-mass-flow stationary state assumption. The Computer Modeling Group’s equation of state multiphase equilibrium property simulator, WinProp, was used for the fluid modeling, while the Computer Modeling Group’s compositional reservoir simulator, GEM, was used for the reservoir modeling and simulation. In the absence of historical production data, Computer Modeling Group’s CMOST was used to perform uncertainty assessment for the validation of the initialized reservoir models. The research results show that initialized reservoir models that neglected or inadequately accounted for compositional grading effects overestimated oil in-place and underestimated gas in-place. The constant composition (without compositional grading) initialized reservoir model overestimates ultimate cumulative oil production by 14.271 MMbbl more than the isothermal compositional grading model and 24.088 MMbbl more than Kempers’ thermal diffusion compositional grading initialized reservoir model. It underestimated ultimate cumulative gas production by 30.133 Bft3 less than the isothermal compositional grading and 50.408 Bft3 less than Kempers’ thermal diffusion compositional grading initialized reservoir model. These figures suggest that neglecting compositional grading or an inadequate account of compositional grading effects in reservoir simulation initialization has detrimental technical consequences
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