• 제목, 요약, 키워드: Egypt

검색결과 270건 처리시간 0.034초

Predicting the Impact of Subsurface heterogeneous Hydraulic Conductivity on the Stochastic Behavior of Well Draw down in a Confined Aquifer Using Artificial Neural Networks

  • Abdin Alaa El-Din;Abdeen Mostafa A. M.
    • Journal of Mechanical Science and Technology
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    • v.19 no.8
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    • pp.1582-1596
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    • 2005
  • Groundwater flow and behavior have to be investigated based on heterogeneous subsurface formation since the homogeneity assumption of this formation is not valid. Over the past twenty years, stochastic approach and Monte Carlo technique have been utilized very efficiently to understand the groundwater flow behavior. However, these techniques require lots of computational and numerical efforts according to the various researchers' comments. Therefore, utilizing new techniques with much less computational efforts such as Artificial Neural Network (ANN) in the prediction of the stochastic behavior for the groundwater based on heterogeneous subsurface formation is highly appreciated. The current paper introduces the ANN technique to investigate and predict the stochastic behavior of a well draw down in a confined aquifer based on subsurface heterogeneous hydraulic conductivity. Several ANN models are developed in this research to predict the unsteady two dimensional well draw down and its stochastic characteristics in a confined aquifer. The results of this study showed that ANN method with less computational efforts was very efficiently capable of simulating and predicting the stochastic behavior of the well draw down resulted from the continuous constant pumping in the middle of a confined aquifer with subsurface heterogeneous hydraulic conductivity.

Occurrence of Root Rot and Vascular Wilt Diseases in Roselle (Hibiscus sabdariffa L.) in Upper Egypt

  • Hassan, Naglaa;Shimizu, Masafumi;Hyakumachi, Mitsuro
    • Mycobiology
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    • v.42 no.1
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    • pp.66-72
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    • 2014
  • Roselle (Hibiscus sabdariffa L.) family Malvaceae is an important crop used in food, cosmetics and pharmaceutics industries. Roselle is cultivated mainly in Upper Egypt (Qena and Aswan governorates) producing 94% of total production. Root rot disease of roselle is one of the most important diseases that attack both seedlings and adult plants causing serious losses in crop productivity and quality. The main objective of the present study is to identify and characterize pathogens associated with root rot and wilt symptoms of roselle in Qena, Upper Egypt and evaluate their pathogenicity under greenhouse and field condition. Fusarium oxysporum, Macrophomina phaseolina, Fusarium solani, Fusarium equiseti and Fusarium semitectum were isolated from the natural root rot diseases in roselle. All isolated fungi were morphologically characterized and varied in their pathogenic potentialities. They could attack roselle plants causing damping-off and root rot/wilt diseases in different pathogenicity tests. The highest pathogenicity was caused by F. oxysporum and M. phaseolina followed by F. solani. The least pathogenic fungi were F. equiseti followed by F. semitectum. It obviously noted that Baladi roselle cultivar was more susceptible to infection with all tested fungi than Sobhia 17 under greenhouse and field conditions. This is the first report of fungal pathogens causing root rot and vascular wilt in roselle in Upper Egypt.

Success Factors of Highway Construction Projects in Egypt: AHP Approach

  • El-Maaty, Ahmed Ebrahim Abu;El-Hamrawy, Saad;Akal, Ahmed Yousry
    • Journal of Construction Engineering and Project Management
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    • v.6 no.4
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    • pp.7-14
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    • 2016
  • While the idea of the existence of a set of key factors for success in planning, designing and construction of projects is not new, it remains one of the most important issues in the field of construction management. This is due to project success factors are inputs to project management practice which can lead directly or indirectly to project success. This study identifies the success factors which can be used for improving the highway projects performance in Egypt during the project pre-construction and construction phases. Through a detailed literature review 35 success factors are identified. Furthermore, the AHP is adopted to prioritize the studied factors through the application of questionnaire survey. The study establishes that implementing an effective quality control and assurance systems, allow sufficient time for feasibility studies, design, drawing and tender preparation, effective cost control system and frequency of project budget updates, preparing adequate designs and drawings and determining sufficient time to implement the desired scope of work are the most important success factors for enhancing the highway projects performance in Egypt.

고대 이집트 복식에 표현된 미의식의 고찰 (A Study on the Aesthetic Conciousness through the Costumes of Ancient Egypt)

  • 최해주
    • 대한가정학회지
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    • v.20 no.1
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    • pp.11-22
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    • 1982
  • The creation of clothing is a form of aesthetic expression through which feelings and ideas are conveyed. This study tried to find out the mental world and aesthetic consciousness of Ancient Egypt through the costume of the period. The beauty of human body was esteemed and expressed in body exposure, tight costumes and transparent fabrics. Through the silhouette of costume, wig and accessories, the beauty of simplicity was expressed. And the beauty of harmony was sought through the beauty of balance and emphasis. The aesthetic consciousness of Ancient Egypt is the refined elegance and it was composed on the basis of the ideas of nature worship and had been preserved by the spirit of traditionism for about 3, 000 years.

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Monitoring of Agriculture land in Egypt using NOAA-AVHRR and SPOT Vegetation data

  • Shalaby, A.;Ghar, M. Aboel;Tateishi, R.
    • 대한원격탐사학회:학술대회논문집
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    • pp.18-20
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    • 2003
  • Land cover change detection is one of the most important trends in which remote sensing data could be used to assist strategists and the planners to decide the best land use policy. Two images of NOAA-AVHRR and SPOT vegetation acquired in November 1992 and 2002 were used to assess the changes of Agricultural lands in Egypt. A supervised classification together with two change images derived from classification result and NDVI were used to evaluate the trend and form of the change. It was found that agricultural areas increased by about 14.3 % during the study period in particular around the River Nile Delta and near the Northern Lakes of Egypt. The new cultivated lands were extracted mainly from the desert and from the salt marches areas. At the same time, parts of the agricultural lands were turned into non-cultivated land because of the urban expansion and soil degradation.

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Synthesis and Antimicrobial Evaluation of New Pyridine, Thienopyridine and Pyridothienopyrazole Derivatives

  • Attaby, Fawzy A.;Elneairy, M.A.A.;Elsayed, M.S.
    • Archives of Pharmacal Research
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    • v.22 no.2
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    • pp.194-201
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    • 1999
  • The reaction of thiocyanoacetamide (1) with ${\alpha},{\beta}$-unsaturated ketones 2a,b resulted in the formation of the corresponding newly synthesized 1(H)-pyridinethione derivatives 3a,b. Compounds 3a,b were used as synthons for the preparation of 2-S-alkyl-, 2-S-acetamidopyridine, thieno[2,3-b]pyridine and pyrazolo[3,4-b]pyridine derivatives via a wide range of reactions with different reagents. The antimicrobial activity of some of the newly synthesized compounds was tested. Compounds 3a, 11a, 15a, and 19a,b were found to be the most active ones.

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Arbitration in Egypt in the Realm of the Arab Spring

  • Selim, Ismail
    • 한국중재학회지:중재연구
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    • v.23 no.3
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    • pp.169-183
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    • 2013
  • Egypt has gone through a major metamorphosis following the Egyptian Revolution that began on 25 January 2011. The aim of this article is to analyze the influence of the aforementioned metamorphoses on the Egyptian Arbitration Law and Practice and to shed light on the recent developments of the latter. Whilst positive legislative amendments have been recently achieved with regards to enforcement of arbitral awards, it is crystal clear that the January 2011 Revolution has negatively impacted the jurisprudence of the Administrative Court of the Conseil d'Etat which has annulled several arbitration clauses enshrined in contracts related to privatization. However, save for disputes arising from administrative contracts, Egypt has been and shall remain a friendly seat of Arbitration as it possesses an arbitration-friendly legislation, its Ordinary Judicial Courts are familiarized with international arbitration practice and it has a prominent and famous arbitration Centre.

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Smooth uniform spaces

  • Ramadan, A.A.;El-Dardery, M.;Kim, Y.C.
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.2 no.1
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    • pp.83-88
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    • 2002
  • We study some properties of smooth uniform spaces. We investigate the relationship between smooth topological spaces and smooth uniform spaces. In particular, we define a subspace of a smooth uniform space and a product of smooth uniform spaces.

Rare 2-Phenoxychromones from Ononis serrata Growing in Egypt

  • Amer, Masouda E.;Kassem, Fahima F.;Abdel-Kader, Maged S.
    • Natural Product Sciences
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    • v.10 no.1
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    • pp.32-34
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    • 2004
  • Two 2-phenoxychromones; a rare group of natural products, were isolated from the combined ethylacetate and chloroform fractions of the ethanolic extract of Ononis serrata frossk (Leguminosae) growing in Egypt. Structures were elucidated by chemical, spectroscopic methods as well as single X-ray diffraction analyses. The cytotoxic and antimicrobial effects of the two compounds were examined. It is worth to mention that this is the first report on the isolation of 2-phenoxychromones from the family Leguminosae.