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Articles de revues sur le sujet « Dakhla Oasis »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 30 janvier 2023

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1

Kimura, Reiji, Erina Iwasaki et Nobuhiro Matsuoka. « Analysis of the Recent Agricultural Situation of Dakhla Oasis, Egypt, Using Meteorological and Satellite Data ». Remote Sensing 12, no 8 (16 avril 2020) : 1264. http://dx.doi.org/10.3390/rs12081264.

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Dakhla Oasis is the most highly populated oasis in Egypt. Although the groundwater resource is very large, there is essentially no rainfall and the aquifer from which the water is drawn is not recharged. Therefore, for the future development and sustainability of Dakhla Oasis, it is important to understand how land and water are used in the oasis and meteorological conditions there. In this study, meteorological and satellite data were used to examine the recent agricultural situation and water use. The results showed that the meteorological conditions are suitable for plant production, and the maximum vegetation index value was comparable to the Nile delta. The cultivated area increased between 2001 and 2019 by 13.8 km2 year−1, with most of the increase occurring after the 2011 revolution (21.2 km2 year−1). People living in Dakhla Oasis derive their income primarily from agricultural activity, which requires abundant water. Thus, the increasing demand for water is likely to put pressure on the groundwater resource and limit its sustainability.
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Tangri, D. « A Reassessment of the Origins of the Predynastic in Upper Egypt ». Proceedings of the Prehistoric Society 58, no 1 (1992) : 111–25. http://dx.doi.org/10.1017/s0079497x00004126.

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Recent arguments about the origins of the Predynastic in Upper Egypt have posited connections between the lithic industries of that region and those of the Western Desert. It has been further claimed that a mid-Holocene arid period may have led the inhabitants of the desert regions to migrate to the Nile Valley. This essay argues that the evidence of stone tools, as well as ceramic evidence from Dakhla Oasis, fail to support the ‘desert migration’ model, at least as it applies to Dakhla Oasis.
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Ali, Yasser. « Conservation of the Traditional Grain Mills in Dakhla Oasis, Egypt : Study of Mechanical Systems and Restoration ». Heritage 1, no 2 (17 octobre 2018) : 254–72. http://dx.doi.org/10.3390/heritage1020017.

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This paper is the first study of traditional grain mills in Dakhla Oasis, Egypt, to ensure the sustainability of these traditional production systems while retaining their original function. In this sense, the aim of this study was to analyze the mechanical systems of the animal-powered traditional mills in Dakhla Oasis, which remain the key to figuring out the puzzle of how these mills work and produce flour. This is an original study that examines a sample animal-powered mill to be conserved; this sample old mill was selected from seven potential grain mills, after investigating each mill. This study provides the technical background and description of the selected grain mill in Dakhla Oasis, and describes its working and mechanical movement. In addition, the physical properties of the historic grain mill wood were measured (e.g., density, shrinkage, and hardness), using scientific techniques, to get some information about their properties. In this study, the methodology for grain mill conservation was based on a combination of the traditional experience of the old craftsmen and modern technology applications in the restoration and rehabilitation of animal-powered mills, in addition to the use of software programs in data analysis. Our results proved that the ancient traditional expertise of the old craftsmen and scientific techniques are the most appropriate methods for restoring and preserving animal-powered mills, which include the determination and rework of the mechanical movement between the wooden gear wheel and millstones. Finally, this study gives an in-depth look into the practical scientific restoration of animal-powered mills in Egypt and other countries.
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Arafa, W. M., A. I. Hassan, S. A. M. Snousi, Kh M. El-Dakhly, P. J. Holman, T. M. Craig et S. M. Aboelhadid. « Fasciola hepaticainfections in cattle and the freshwater snailGalba truncatulafrom Dakhla Oasis, Egypt ». Journal of Helminthology 92, no 1 (6 février 2017) : 56–63. http://dx.doi.org/10.1017/s0022149x17000086.

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AbstractInfection byFasciolaspecies was investigated in seven districts of Dakhla Oasis, Egypt, through abattoir inspection of cattle livers for adult worms and sedimentation of faecal samples from local cattle to detectFasciolaeggs. In addition, lymnaeid snails collected from the study area were examined microscopically for developmental stages ofFasciolaspp. Abattoir inspection revealed that 51 out of 458 cattle livers (11.1%) contained adult flukes, which were identified morphologically asFasciola hepatica.Examination of the cattle faecal samples revealed that 142 out of 503 (28.2%) containedFasciolaeggs. The collected snails, identified asGalba truncatulaandRadix natalensis,showed larval stages ofFasciolain 71 out of 731 (9.7%)G. truncatula, whileR. natalensisshowed no infection. Specific duplex polymerase chain reaction (PCR) targeting the mitochondrialcox1gene ofF. hepaticaandFasciola giganticawas carried out on DNA extracted from pooled infected snails and adult worms. TheF. hepaticasize amplicon (1031 bp) was obtained from both the infectedG. truncatulaand the adult worms isolated from cattle livers from different districts. The amplicon sequences were identical to the published sequences ofF. hepaticamitochondrialcox1gene. In conclusion, the zoonotic importance ofFasciolainfection and appropriate hygienic measures must be taken into consideration in Dakhla Oasis, Egypt.
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حجازی, حنان. « The architecture Of The City Of Badkhalo at Dakhla Oasis ». حولیة الاتحاد العام للآثاریین العرب "دراسات فى آثار الوطن العربى" 25, no 1 (1 juin 2022) : 150–70. http://dx.doi.org/10.21608/cguaa.2022.129887.1127.

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Brookes, Ian A. « Geomorphology and Quaternary geology of the Dakhla Oasis Region, Egypt ». Quaternary Science Reviews 12, no 7 (janvier 1993) : 529–52. http://dx.doi.org/10.1016/0277-3791(93)90068-w.

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Lazaridis, Nikolaos. « “Like Wringing Water from a Stone!” Information Extraction from Two Rock Graffiti in North Kharga, Egypt ». Heritage 4, no 3 (7 septembre 2021) : 2253–60. http://dx.doi.org/10.3390/heritage4030127.

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In the course of the last ten years, the North Kharga Oasis–Darb Ain Amur Survey team, led by Salima Ikram (American University in Cairo), has been exploring a network of interconnected desert paths in Egypt’s Western Desert, known as Darb Ain Amur. These marked paths run between Kharga Oasis and Dakhla Oasis, linking them to Darb el-Arbain, a notorious caravan route facilitating contacts between Egypt and sub-Saharan Africa since prehistoric times. Ancient travelers using the Darb Ain Amur spent several days in the midst of the Western Desert and were thus forced to use areas around sandstone rock outcrops as makeshift stopovers or camping sites. During these much-needed breaks, ancient travelers identified accessible, inscribable surfaces on the towering sandstone massifs and left on them their personalized markings. In this essay, I examine two short rock graffiti carved by such travelers in a site north of Kharga Oasis, focusing on the types of information one may extract from such ancient epigraphic materials.
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Kuper, Rudolph. « By donkey train to Kufra?—How Mr Meri went west ». Antiquity 75, no 290 (décembre 2001) : 801–2. http://dx.doi.org/10.1017/s0003598x00089328.

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In 1990, about 30 km southwest of Dakhla oasis, the most remote settlement in Egypt’s Western Desert, a hieroglyphic rock inscription was discovered that turned out to be the first clear evidence of an Ancient Egyptian presence so far into the Sahara (Burkard 1997). The short text states that a higher official named Meri went out to meet (?) oasis dwellers. Details of translation, interpretation and palaeographic dating of the text are a matter of discussion among Egyptologists, but it clearly seems to be of Old or Early Middle Kingdom origin. The home of the ‘oasis dwellers’ can reasonably be inferred as lying further west or southwest. However, the nearest places with permanent water in these directions are the Kufra Oasis in Libya and the wells of Djebel Uweinat, which lie, respectively, some 600 km and 500 lan away. How was it possible to master such distances under the then already prevailing hyperarid conditions by the only available means of transportation, a train of donkeys that have to drink at least every three days?
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Awad, M., M. El-Desoky, Nadia Roshdi et M. Tantawy. « Potassium Forms of EL-Dakhla Oasis Soils, New Valley Governorate, Egypt ». Journal of Soil Sciences and Agricultural Engineering 7, no 12 (1 décembre 2016) : 947–54. http://dx.doi.org/10.21608/jssae.2016.40558.

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Polkowski, Paweł Lech. « Oasis bestiarum. Les animaux dans l’art rupestre de l’oasis de Dakhla (Égypte) ». Afrique : Archeologie et Arts, no 14 (15 décembre 2018) : 11–40. http://dx.doi.org/10.4000/aaa.1631.

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Jeuthe, Clara. « Initial results : The Sheikh Muftah occupation at Balat North/1(Dakhla Oasis) ». Archéo-Nil. Revue de la société pour l'étude des cultures prépharaoniques de la vallée du Nil 24, no 1 (2014) : 103–14. http://dx.doi.org/10.3406/arnil.2014.1073.

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Sawy, S., A. A. Abd El-Hady et I. A. H. Yousif. « LAND EVALUATION AND SUSTAINABLE DEVELOPMENT OF SOME AREAS OF DAKHLA OASIS, EGYPT ». Journal of Soil Sciences and Agricultural Engineering 4, no 12 (1 décembre 2013) : 1393–409. http://dx.doi.org/10.21608/jssae.2013.52921.

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Schrank, Eckart, et Magdy S. Mahmoud. « Barremian Angiosperm Pollen and Associated Palynomorphs from the Dakhla Oasis Area, Egypt ». Palaeontology 45, no 1 (janvier 2002) : 33–56. http://dx.doi.org/10.1111/1475-4983.00226.

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Nagy, Nourhan, Tamer Ayad et Marwa Abd El-Wahab. « Evaluation of Ecotourism in the Western desert : A case study of Dakhla Oasis ». Journal of Association of Arab Universities for Tourism and Hospitality 23, no 2 (1 décembre 2022) : 95–109. http://dx.doi.org/10.21608/jaauth.2022.168728.1398.

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Gamal Saleh, Mohamed, Mostafa Atallah et Tarek Sayed Tawfik. « Using Public Archaeology towards protecting and managing the archaeological sites in Dakhla Oasis ». مجلة کلیة الآثار . جامعة القاهرة 14, no 26 (1 janvier 2023) : 311–30. http://dx.doi.org/10.21608/jarch.2023.277044.

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Megahed, Hanaa A., Hossam M. GabAllah, Mohamed A. E. AbdelRahman, Paola D’Antonio, Antonio Scopa et Mahmoud H. Darwish. « Geomatics-Based Modeling and Hydrochemical Analysis for Groundwater Quality Mapping in the Egyptian Western Desert : A Case Study of El-Dakhla Oasis ». Water 14, no 24 (9 décembre 2022) : 4018. http://dx.doi.org/10.3390/w14244018.

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Groundwater is the single source of water in El-Dakhla Oasis, western desert, Egypt. The main objective of this study is an assessment of groundwater in the area for agriculture and drinking compared to Egyptian and World Health Organization criteria. Most the contamination of water in the study area comes from human and agricultural activities. Thirty soil profiles were studied in the area and we assessed soil quality. Seventy-four samples were taken from the area’s groundwater wells to assess the chemical characteristics of the groundwater. Moreover, the contamination of groundwater by farming and anthropogenic activities was assessed using a land use/land cover (LULC) map. Nine standard water criteria were determined to assess groundwater quality for agriculture. Furthermore, the resulting risk to human health and agricultural crops has been addressed. Therefore, the drinking quality of groundwater samples is graded as low as the hydrochemical study showed high TH, EC, TDS, Ca2+, Mg2+, Mn2+, and Fe2+ contents of 40.5%, 2.7%, 1.4%, 3.8%, 1.6%, 86.5%, and 100%, respectively. Human health is risked by drinking this water, which negatively affects hair, skin, and eyes, with greatest exposure to enteric pathogens. Using these criteria, the majority of groundwater samples cause harmful effects on soil types and are toxic to sensitive crops (vegetable crops). In conclusion, the output of this research is a map showing groundwater suitable for consumption and agriculture in El-Dakhla Oasis based on all indices using the Geographic Information Systems (GIS) model. Additionally, there was evidence of a linear relationship between soil quality and irrigation water quality (R2 = 0.90). This emphasis on tracking changes in soil/water quality was brought on by agricultural practices and environmental variables.
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Brookes, Ian A. « Spatially variable sedimentary responses to orbitally driven pluvial climate during Marine Oxygen Isotope Stage 5.1, Dakhla Oasis region, Egypt ». Quaternary Research 74, no 2 (septembre 2010) : 252–64. http://dx.doi.org/10.1016/j.yqres.2010.05.001.

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AbstractPleistocene basinal sediments (PBS) in the Dakhla region of Egypt's hyperarid Western Desert comprise four facies: (A) fluvio-lacustrine, (B) mixed lacustrine/pluvio-eolian, (C) pluvio-eolian, and (D) mixed eolian/pluvio-eolian. Contiguity of basins containing each facies, and their stratigraphic position between two bajada gravel formations, P/B-II and P/B-III, confirm their equivalence. Facies A and B, with lacustrine components, are attributed to orbitally forced poleward incursion of the Intertropical Convergence Zone (ITCZ), resulting in increased summer insolation/temperature/precipitation. Facies C and D, comprising pluvio-eolian and eolian sediments, reflect geologic/topographic influences overprinted on regional 'pluvial' conditions, eliminating lacustrine response. A Th/U age of ∼ 62 ka on lacustrine marl within Facies B is minimal, and an OSL age of 110 ± 18 ka on sediments immediately below Facies B is maximal. Since bajada gravels P/B-III are the youngest Pleistocene formation, they must represent the final strong incursion of the ITCZ into the Dakhla region at MIS 5.1, ∼ 80 ka. Because PBS Facies A pass rapidly up into P/B-III bajada gravels, PBS are assigned to the rising limb of the MIS 5.1 insolation/temperature/precipitation curve, slightly younger than 80 ka.
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Michel, Nicolas. « Noms de famille dans les oasis d’Égypte à l’époque ottomane ». Eurasian Studies 15, no 2 (26 avril 2017) : 183–99. http://dx.doi.org/10.1163/24685623-12340035.

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Abstract Very little is known about the existence of family names in Ottoman Egypt, except among the upper classes and urban society as a whole. In this respect, the Western Desert Oases of Dakhla and Kharga provide us with an exceptional documentation. Cross referencing texts found or still preserved in local family archives with the results of ethnographical fieldwork conducted over a century, enables us to reconstruct the onomastic culture of the Oases society through the last four centuries. Family names were in use among most of the inhabitants. This use developed in a complex way, by combining lineage names created a few generations ago with more ancient and inclusive names. Their combined use allowed to identify and classify all the inhabitants of a settlement, without knowing them personally. It reflects a non-tribal society, largely based on the ownership of scarce but perennial water resources, a key factor in the longevity of families.
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Farouk, Sherif, Mohamed A. Khalifa, Mohamed M. Abu El-Hassan, Cesare A. Papazzoni, Fabrizio Frontalini, Rodolfo Coccioni et Amr S. Zaky. « Upper Paleocene to lower Eocene microfacies, biostratigraphy, and paleoenvironmental reconstruction in the northern Farafra Oasis, Western Desert (Egypt) ». Micropaleontology 65, no 5 (2019) : 381–406. http://dx.doi.org/10.47894/mpal.65.5.01.

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Three Paleocene-Eocene (P-E) stratigraphic transect sections namely, from the north to south, Ain Maqfi, Farafra-Ain Dalla road, and El-Quess Abu Said in the northern Farafra Oasis,Western Desert (Egypt) are described and interpreted based upon field observations, microfacies analysis, chronostratigraphy and foraminiferal paleobathymetry, to detect the effect of the Syrian Arc Fold System (SAFS) on the lateral and vertical facies changes, various stratigraphic breaks and to reconstruct the depositional paleoenvironments. Lithostratigraphically, the P-E successions are composed of the upper part of the Dakhla Formation, Tarawan Chalk and Esna Shale Formation. Vertical and lateral facies changes are noted between tectonic paleo-highs and paleo-lows in the Farafra Oasis. Eight microfacies types are recognized. The larger benthic and planktonic foraminiferal zones are here used to correlate the shallow and deeper facies. Two larger benthic (SBZ4 and SBZ6), six planktonic foraminiferal (P4–E4) and one calcareous nannofossil (NP9b) biozones are identified. The recorded basal Eocene Dababiya Quarry Member (DQM) within the Esna Shale Formation in the central Farafra Oasis is represented by units 4 and 5 of the DQMat its GSSPwith a neritic facies types. Towards the northern part of the Farafra Oasis, the P-E interval occurs within the base of the Maqfi Limestone Member that contains the larger benthic foraminiferal SBZ6 Zone and is correlated with the DQM.Amajor sea-level fall near the upper part of P5 Zone, followed by a prominent sea-level risewith a minor hiatus across the P-E interval in the Farafra Oasis reflects the complex interplay between sea level changes and tectonic signatures. Two inferred paleoenvironments, namely inner neritic and mid-outer neritic shelf have been identified.
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Hamed, Mahdy H., et Mostafa Y. Khalafallh. « Available nutrients and some soil properties of El-Qasr soils, El-Dakhla Oasis, Egypt ». International Journal of Environment, Agriculture and Biotechnology 2, no 6 (2017) : 3243–49. http://dx.doi.org/10.22161/ijeab/2.6.60.

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hamed, mahdy, Mohamed Eldesoky, Nadia Roshdi et Mahmoud abdel-rahim. « Soil Salinity Impact on Phosphorus Forms of Some Soils of El-Dakhla Oasis, Egypt ». Alexandria Journal of Soil and Water Sciences 2, no 1 (1 janvier 2018) : 14–27. http://dx.doi.org/10.21608/ajsws.2018.225226.

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Lesur, Joséphine. « Exploitation animale à l'Ancien Empire en Égypte : les apports d'Ayn Asil (oasis de Dakhla) ». Anthropozoologica 50, no 1 (juin 2015) : 33–47. http://dx.doi.org/10.5252/az2014n1a3.

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Schrank, Eckart, et Magdy S. Mahmoud. « Palynology (pollen, spores and dinoflagellates) and cretaceous stratigraphy of the Dakhla Oasis, central Egypt ». Journal of African Earth Sciences 26, no 2 (février 1998) : 167–93. http://dx.doi.org/10.1016/s0899-5362(98)00004-9.

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Jordan, Peter. « From Katayama to the Dakhla Oasis : the beginning of epidemiology and control of bilharzia ». Acta Tropica 77, no 1 (octobre 2000) : 9–40. http://dx.doi.org/10.1016/s0001-706x(00)00121-2.

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Sedek Abu Seif, El-Sayed, et El-Sharif M. Abd Al-Aziz. « GEOTECHNICAL FACTORS GOVERNING SHEAR STRENGTH OF QUSEIR SHALE IN DAKHLA OASIS, WESTERN DESERT, EGYPT ». JES. Journal of Engineering Sciences 36, no 1 (1 janvier 2008) : 131–45. http://dx.doi.org/10.21608/jesaun.2008.115610.

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Hewaidy, Abdel Galil A., Sherif Farouk et Youssef S. Bazeen. « Sequence stratigraphy of the Maastrichtian-Paleocene succession at the Dakhla Oasis, Western Desert, Egypt ». Journal of African Earth Sciences 136 (décembre 2017) : 22–43. http://dx.doi.org/10.1016/j.jafrearsci.2016.11.028.

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Kimura, Reiji, Hiroshi Kato et Erina Iwasaki. « Cultivation Features Using Meteorological and Satellite Data from 2001 to 2010 in Dakhla Oasis, Egypt ». Journal of Water Resource and Protection 07, no 03 (2015) : 209–18. http://dx.doi.org/10.4236/jwarp.2015.73017.

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Selmy, Salman A. H., Salah H. Abd Abd Al-Aziz, Raimundo Jiménez-Ballesta, Francisco Jesús García-Navarro et Mohamed E. Fadl. « Soil Quality Assessment Using Multivariate Approaches : A Case Study of the Dakhla Oasis Arid Lands ». Land 10, no 10 (12 octobre 2021) : 1074. http://dx.doi.org/10.3390/land10101074.

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A precise evaluation of soil quality (SQ) is important for sustainable land use planning. This study was conducted to assess soil quality using multivariate approaches. An assessment of SQ was carried out in an area of Dakhla Oasis using two methods of indicator selection, i.e., total data set (TDS) and minimum data set (MDS), and three soil quality indices (SQIs), i.e., additive quality index (AQI), weighted quality index (WQI), and Nemoro quality index (NQI). Fifty-five soil profiles were dug and samples were collected and analyzed. A total of 16 soil physicochemical parameters were selected for their sensitivity in SQ appraising to represent the TDS. The principal component analysis (PCA) was employed to establish the MDS. Statistical analyses were performed to test the accuracy and validation of each model, as well as to understand the relationship between the used methods and indices. The results of principal component analysis (PCA) showed that soil depth, gravel content, sand fraction, and exchangeable sodium percentage (ESP) were included in the MDS. High positive correlations (r ≥ 0.9) occurred between SQIs calculated using TDS and/or MDS under the three models. Moreover, the findings showed highly significant differences (p < 0.001) among SQIs within and between TDS and MDS. Approximately 80 to 85% of the total study area based on TDS, as well as 70 to 75%, according to MDS, were identified as suitable soils with slight limitations on soil quality grade (Q3, Q2, and Q1), while the remaining 20 to 30% had high to severe limitations (Q4 and Q5). The highest sensitivity (SI = 2.9) occurred by applying WQI using MDS and indicator weights based on the variance of PCA. Furthermore, the highest linear regression value (R2 = 0.88) between TDS and MDS was recorded using the same model. Because of its high sensitivity, such a model could be used for monitoring SQ changes caused by agricultural practices and environmental factors. The findings of this study have significant guiding implications and practical value in assessing the soil quality using TDS and MDS in arid areas critically and accurately.
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Arafa, Waleed. « Detection of Fasciola hepatica infection in cattle and Lymnaea truncatula snails in Dakhla Oasis, Egypt ». Egyptian Veterinary Medical Society of Parasitology Journal (EVMSPJ) 11, no 11 (1 décembre 2015) : 89–94. http://dx.doi.org/10.21608/evmspj.2015.37940.

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Mohamaden, Mahmoud Ismail Ismail. « Delineating groundwater aquifer and subsurface structures by using geoelectrical data : Case study (Dakhla Oasis, Egypt) ». NRIAG Journal of Astronomy and Geophysics 5, no 1 (juin 2016) : 247–53. http://dx.doi.org/10.1016/j.nrjag.2016.05.001.

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Awad, M. Y. M. « Exploratory Properties and Restrictions of El-Zayat Soils for Agricultural Sustainability, El-Dakhla Oasis, Egypt ». Journal of Soil Sciences and Agricultural Engineering 9, no 12 (1 décembre 2018) : 873–79. http://dx.doi.org/10.21608/jssae.2018.69975.

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Masoud, Alaa A., Mohamed M. El-Horiny, Mohamed G. Atwia, Khaled S. Gemail et Katsuaki Koike. « Assessment of groundwater and soil quality degradation using multivariate and geostatistical analyses, Dakhla Oasis, Egypt ». Journal of African Earth Sciences 142 (juin 2018) : 64–81. http://dx.doi.org/10.1016/j.jafrearsci.2018.03.009.

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Ebraheem, A. M., S. Riad, P. Wycisk et A. M. Sefelnasr. « A local-scale groundwater flow model for groundwater resources management in Dakhla Oasis, SW Egypt ». Hydrogeology Journal 12, no 6 (20 juillet 2004) : 714–22. http://dx.doi.org/10.1007/s10040-004-0359-8.

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Soliman, Nevin W., et Salwa Kamel. « Sheikh Muftah Culture : A transition between prehistoric and historical times in the Dakhla Oasis (Egypt) ». مجلة کلیة الآثار . جامعة القاهرة 14, no 26 (1 janvier 2023) : 215–31. http://dx.doi.org/10.21608/jarch.2023.277033.

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Selmy, Salman A. H., Salah H. Abd Al-Aziz, Raimundo Jiménez-Ballesta, Francisco Jesús García-Navarro et Mohamed E. Fadl. « Modeling and Assessing Potential Soil Erosion Hazards Using USLE and Wind Erosion Models in Integration with GIS Techniques : Dakhla Oasis, Egypt ». Agriculture 11, no 11 (10 novembre 2021) : 1124. http://dx.doi.org/10.3390/agriculture11111124.

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Soil erosion modeling is becoming more significant in the development and implementation of soil management and conservation policies. For a better understanding of the geographical distribution of soil erosion, spatial-based models of soil erosion are required. The current study proposed a spatial-based model that integrated geographic information systems (GIS) techniques with both the universal soil loss equation (USLE) model and the Index of Land Susceptibility to Wind Erosion (ILSWE). The proposed Spatial Soil Loss Model (SSLM) was designed to generate the potential soil erosion maps based on water erosion and wind erosion by integrating factors of the USLE and ILSWE models into the GIS environment. Hence, the main objective of this study is to predict, quantify, and assess the soil erosion hazards using the SSLM in the Dakhla Oasis as a case study. The water soil loss values were computed by overlaying the values of five factors: the rainfall factor (R-Factor), soil erodibility (K-Factor), topography (LS-Factor), crop types (C-Factor), and conservation practice (P-Factor). The severity of wind-driven soil loss was calculated by overlaying the values of five factors: climatic erosivity (CE-Factor), soil erodibility (E-Factor), soil crust (SC-Factor), vegetation cover (VC-Factor), and surface roughness (SR-Factor). The proposed model was statistically validated by comparing its outputs to the results of USLE and ILSWE models. Soil loss values based on USLE and SSLM varied from 0.26 to 3.51 t ha−1 yr−1 with an average of 1.30 t ha−1 yr−1 and from 0.26 to 3.09 t ha−1 yr−1 with a mean of 1.33 t ha−1 yr−1, respectively. As a result, and according to the assessment of both the USLE and the SSLM, one soil erosion class, the very low class (<6.7 t ha−1 yr−1), has been reported to be the prevalent erosion class in the study area. These findings indicate that the Dakhla Oasis is slightly eroded and more tolerable against water erosion factors under current management conditions. Furthermore, the study area was classified into four classes of wind erosion severity: very slight, slight, moderate, and high, representing 1.0%, 25.2%, 41.5%, and 32.3% of the total study area, respectively, based on the ILSWE model and 0.9%, 25.4%, 43.9%, and 29.9%, respectively, according to the SSLM. Consequently, the Dakhla Oasis is qualified as a promising area for sustainable agriculture when appropriate management is applied. The USLE and ILSWE model rates had a strong positive correlation (r = 0.97 and 0.98, respectively), with the SSLM rates, as well as a strong relationship based on the average linear regression (R2 = 0.94 and 0.97, respectively). The present study is an attempt to adopt a spatial-based model to compute and map the potential soil erosion. It also pointed out that designing soil erosion spatial models using available data sources and the integration of USLE and ILSWE with GIS techniques is a viable option for calculating soil loss rates. Therefore, the proposed soil erosion spatial model is fit for calculating and assessing soil loss rates under this study and is valid for use in other studies under arid regions with the same conditions.
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Ismael, Hossam. « Evaluation Of Present-Day Climate-Induced Desertification In El-Dakhla Oasis, Western Desert Of Egypt, Based On Integration Of MEDALUS Method, GIS And RS Techniques. » Present Environment and Sustainable Development 9, no 2 (1 octobre 2015) : 47–72. http://dx.doi.org/10.1515/pesd-2015-0024.

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Abstract Limited to fourth percent or less of the country’s total land area, Egypt’s agricultural landscape is threatened by the repercussions of climate change, desertification, soil depletion, and looming water scarcity. Outside of the Nile river valley and scattered fertile pockets in the desert oases, the vast majority of land is desert: rocky, parched and unable to support conventional farming. According to Egyptian National Action Program 2005 (ENAP), Egypt covers an area of about one million km2 ~ 100 million hectares, out of which about of 76.5 thousands km2 ~ 7.6% of the total area are inhabited, and the remaining (92.4%) area is desert. Desertification is a very complex process governed by several variables which influence each other. It is thus not possible to conclude for the general picture from a single factor alone. This process has a high rate in arid and hyper-arid countries such as Egypt. The main objective of this research was to evaluation the present-day climate-induced desertification in El-Dakhla Oasis, so in this study, the newest method for evaluating and mapping of desertification was used. The mathematic method was carried out by European Commission (EC), (MEditerranean Desertification And Land Use) at the MEDALUS project and booked as ESAs in 1999 integrated with remote sensing and GIS. All indices of the model were revised before using, and regarding to the region condition these indices were defined as key indices which were: Temperature, precipitation, wind, albedo, ground water and soil benchmark, and each benchmark has some sub-layers getting from their geometric mean. Based on the MEDALUS model, each sub-benchmark was quantified according to its quality and given a weighting of between 1.0 and 2.0. All benchmarks should be reinvestigated and adjusted to local conditions. Ultimately, desertification severity was classified in four level including low, moderate, Severe and high Severe. ArcGIS 10 was used to analysis and prepares the layers of quality maps using the geometric mean to integrate the individual sub-indicator maps. In turn the geometric mean of six quality maps was used to generate a single desertification status map. Remote sensing data have great potential to improve models mapping spatial variability of temperature and precipitation since they are available as time worldwide, and have high spatial resolution. The HYDRA visualization software was used to measure the present surface albedo from MODIS product (MOD43C1). Results showed that 60% of the area is classified as Severe, 14 % as moderate and 12%, 16% as low and none affected by desertification respectively. In addition the climatic variations including rainfall, temperature, sunlight, wind indicators were the most important factors affecting desertification process in El-Dakhla Oasis.
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AWAD, M. H., G. A. AL NADEEM, S. A. SAMEEH et A. R. HEMEID. « GEOCHEMISTRY OF THE PHOSPHATE DEPOSITS AT EL-RASHDA, EL-MAWHOOB AREA, DAKHLA OASIS, WESTERN DESERT, EGYPT ». Al-Azhar Bulletin of Science- Basic Science Sector 24, no 2 (1 décembre 2013) : 1–24. http://dx.doi.org/10.21608/absb.2013.6590.

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Fadl, Mohamed, et Ahmed Abuzaid. « Assessment of Land Suitability and Water Requirements for Different Crops in Dakhla Oasis, Western Desert, Egypt ». International Journal of Plant & ; Soil Science 16, no 6 (10 janvier 2017) : 1–16. http://dx.doi.org/10.9734/ijpss/2017/33835.

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Sadr, Karim. « El Kharafish : the archaeology of Sheikh Muftah pastoral nomads in the desert around Dakhla Oasis (Egypt) ». Azania : Archaeological Research in Africa 47, no 2 (juin 2012) : 234–35. http://dx.doi.org/10.1080/0067270x.2012.678654.

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Rashed, M. A. « From Powerlessness to Control : Psychosis, Spirit Possession and Recovery in the Western Desert of Egypt ». Health, Culture and Society 8, no 2 (17 décembre 2015) : 10–26. http://dx.doi.org/10.5195/hcs.2015.194.

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This article explores an aspect of the cultural modulation of recovery in psychosis. It begins with the idea that recovery hinges on the ability of subjects to relate to their distressing experiences in ways that expand rather than diminish agency. Based on fieldwork in the Dakhla oasis of Egypt and subsequent analysis, it is argued that interpretations of psychosis as spirit possession offer a broader range of intentionality than biomedical interpretations and therefore broader possibilities of relating to psychotic states. Modes of relating to spirits may take active or passive forms, the former consistent with the recovery goal of symptom control. Factors constitutive of the active, agency-expanding mode of relating include: the nature of spirits; the values and beliefs of the subject; the broader cultural/religious discourses which may make it either more or less likely for the subject to achieve the desired state of control over symptoms.
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Saif, Passant, et Ahmed Tamer Saif. « Incidence of Ophthalmic Disease in the Dakhla Oasis in Egypt by a prevention of blindness major campaign ». NILES journal for Geriatric and Gerontology 3, no 1 (1 juin 2020) : 34–42. http://dx.doi.org/10.21608/niles.2020.34270.1027.

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Aravecchia, Nicola. « Geometric painting in late-antique Egypt : the ceiling of a 4th-c. church at Amheida (Dakhla Oasis) ». Journal of Roman Archaeology 33 (2020) : 449–66. http://dx.doi.org/10.1017/s1047759420001117.

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As part of an investigation of the use of geometric painting on ceilings in late-antique Egypt, this article will focus on the evidence found in a 4th-c. A.D. church at the polis of Trimithis (Amheida), located in the Dakhla Oasis of Egypt‘s Western Desert. Excavation in 2012-13 as part of a project directed by R. S. Bagnall highlighted the church‘s rôle for both cult and burials. Thousands of fragments of painted plaster, part of the church‘s collapsed flat ceiling, revealed a wide array of interlocked geometrical shapes in vivid colors, creating a visually dramatic contrast with the church‘s seemingly white walls. The polychrome decoration was probably meant to replicate the effect of a coffered ceiling. Similar geometric schemes are found elsewhere in the Western Desert in both domestic and funerary contexts, and there is evidence of other Egyptian Early Christian churches that had flat ceilings, but a flat roof with painted geometric decoration in the context of an Early Christian church is thus far unattested elsewhere in Egypt. This article will highlight the popularity and longevity of this decorative style in Egypt throughout the Roman period and well into late antiquity and will point to similarities between this type of ceiling decoration and Alexandrian models of the Ptolemaic period, as well as mosaic designs found throughout Mediterranean lands.
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Zaghloul, E. A., S. M. Hassan, A. M. Bahy El-Dein et S. F. Elbeih. « Detection of ancient irrigation canals of Deir El-Hagar playa, Dakhla Oasis, Egypt, using Egyptsat-1 data ». Egyptian Journal of Remote Sensing and Space Science 16, no 2 (décembre 2013) : 153–61. http://dx.doi.org/10.1016/j.ejrs.2013.06.001.

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Mahmoud, M. S., et A. M. Omran. « On the occurrence of some Paleocene palynomorphs from the Dakhla and Esna formations, Kharga Oasis area, Egypt ». Journal of African Earth Sciences (and the Middle East) 17, no 2 (août 1993) : 241–47. http://dx.doi.org/10.1016/0899-5362(93)90040-w.

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Marey Mahmoud, Hussein, Mohamed Hussein et Atef Brania. « Pigments and plasters from the Roman temple of Deir El-Hagar, Dakhla Oasis, Egypt : vibrational spectroscopic characterization ». Rendiconti Lincei. Scienze Fisiche e Naturali 30, no 4 (3 août 2019) : 735–46. http://dx.doi.org/10.1007/s12210-019-00834-4.

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hassan, ahmed, Mohamed Ramdan, Omar S.F. A et Lubna Elkabawy. « In vitro anthelmintic effects of iron oxide and zinc oxide nanoparticles against Fasciola Spp. in Dakhla Oasis, Egypt. » Benha Veterinary Medical Journal 41, no 1 (1 octobre 2021) : 144–47. http://dx.doi.org/10.21608/bvmj.2021.83038.1442.

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Sefelnasr, Ahmed, Wolfgang Gossel et Peter Wycisk. « Three-dimensional groundwater flow modeling approach for the groundwater management options for the Dakhla oasis, Western Desert, Egypt ». Environmental Earth Sciences 72, no 4 (10 janvier 2014) : 1227–41. http://dx.doi.org/10.1007/s12665-013-3041-4.

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Mahmoud, Hussein Hosni, et Saad Younes Ghoubachi. « Geophysical and hydrogeological investigation to study groundwater occurrences in the Taref Formation, south Mut area – Dakhla Oasis - Egypt ». Journal of African Earth Sciences 129 (mai 2017) : 610–22. http://dx.doi.org/10.1016/j.jafrearsci.2017.02.009.

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Lebedev, Maksim. « Egyptian Expeditionary Inscriptions of the Fourth Dynasty and Ancient Natural Landscapes of the Western (Libyan) Desert ». Stratum plus. Archaeology and Cultural Anthropology, no 6 (30 décembre 2021) : 315–31. http://dx.doi.org/10.55086/sp216315331.

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The Middle Holocene epoch in northeastern Africa was marked by a steady trend towards aridization. However, the transformation of ecosystems and natural landscapes was gradual and had a complex nature. This change directly affected the development of the first ancient Egyptian centralized state as well as the development of its resource base beyond the Nile Valley. This study addresses the problem of using ancient Egyptian epigraphic sources (expeditionary inscriptions) for the study of both paleolandscapes and ecosystems of the Western (Libyan) Desert and the possible socio-economic impact of their change. The author studies several graffiti, which are believed to have preserved information on natural conditions near the Dakhla oasis and in the region of Wadi Toshka during the time of construction of the great pyramids (Fourth Dynasty). The author concludes that it is quite easy to make misleading assumptions when interpreting expeditionary artefacts. At the same time, as an example with an unusual toponym from the quarries near Wadi Toshka demonstrates, even the shortest graffiti can provide researchers with important additional information on possible changes in the ancient climate and landscape.
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Elshafie, Hanan. « دراسة لمجموعة نحتیة غیر منشورة من واحة الداخلة A study of an unpublished group Of sculpture from Dakhla oasis ». Conference Book of the General Union of Arab Archeologists 11, no 11 (1 octobre 2008) : 152–60. http://dx.doi.org/10.21608/cguaa.2008.37981.

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