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Ore Controls and Metallogenesis of Au-Ag Deposits at Atalla Mine,Central Eastern Desert of Egypt

Acta Geologica Sinica(English Edition) 2020年第5期94卷 1451-1470页

作者： Mohamed abd el MONSEF Geology Department Faculty of ScienceTanta UniversityTanta 31527Egypt Institute of Geological Sciences Faculty of ScienceMasaryk UniversityBrnoCzech Republic

Gold-silver deposits in the Atalla area occur as hydrothermal quartz veins in NE–SW pre-existing fractures within the Atalla granitic *** orientation of such quartz veins has been attributed to extensional behavior related to the Atalla Shear Zone(ASZ).The Atalla area is covered by a variety of lithologies that are(from oldest to youngest):metasedimentary rocks,metavolcanic rocks,ophiolite assemblage(serpentinites/talc-carbonates),Atalla granite and Dokhan volcanic ***,Atalla granite ranges in composition from granodiorite to *** geochemistry constrains the calc-alkaine affinity of the Atalla granite that was intruded within an orogenic(syncollision)tectonic *** ore minerals are represented by gold/silver(electrum),pyrite(Py1&Py2),arsenopyrite,pyrrhotite,sphalerite,chalcopyrite,galena,covellite and *** temperature of ore formation ranges from 240 to 285℃and the estimated fluid pressure is in the range of 20–100 *** on the geological setting,ore textures and fluid characteristics;the Atalla Au-Ag deposits are considered to be orogenic in nature,formed from a continental collision(~653-590 Ma),synchronous with the emplacement of calc-alkaline magmatism during the evolutionary history of the Arabian Nubian Shield(ANS).The initial ore-forming fluid was primarily derived from a metamorphic source related to ophiolitic-serpentinite rocks under deep regional conditions of greenschist-amphibolite facies,where the Atalla granitic eruption provided the required temperature conditions for the metamorphic process to take *** such conditions,the transportation of ore metals as bisulfide complexes is *** deposition of ore minerals was triggered by fluidwallrock interaction through fracture pathways in conjunction with a temperature-pressure drop that is likely to have been related to uplift into the crustal levels.

关键词： Gold-silver arsenopyrite geothermometry fluid inclusions orogenic deposits Atalla Shear Zone(ASZ)

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Detection of Salmonella typhimurium in retail chicken meat and chicken giblets

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Asian Pacific Journal of Tropical Biomedicine 2013年第9期3卷 678-681页

作者： Doaa M abd el-aziz Department of Food Hygiene Faculty of Veterinary MedicineAssiut University

Objective:To detect Salmonella typhimurium(***),one of the most frequently isolated serovars from food borne outbreaks throughout the world,in retail raw chicken meat and ***:One hundred samples of retail raw chicken meat and giblets(Liver,heart and gizzard)which were collected from Assiut city markets for detection of the organism and by using Duplex PCR amplification of DNA using rfbj andfliC ***:*** was detected at rate of 44%,40%and 48%in chicken meat,liver and heart,respectively,but not detected in ***:The results showed high incidence of *** in the examined samples and greater emphasis should be applied on prevention and control of contamination during processing for reducing food-borne risks to consumers.

关键词： Salmonella typhimurium Chicken meat Duplex PCR

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Ampelographic and Genetic Diversity Assessment of Some Local Grape Genotypes under Egyptian Conditions

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American Journal of Molecular Biology 2023年第3期13卷 183-196页

作者： Rania Ahmed Mahmoud Abeer Aly Dahab Gehan Ahmed Mahmoud Mohamed abd el-aziz abd el-Wahab Emad Hamed el-Bassel Ehab Mawad Badr Mahdy Deciduous Fruits Research Department Biotechnology Central Laboratory Horticulture Research Institute (HRI) Agricultural Research Center (ARC) Giza Egypt Medicinal and Aromatic Plants Research Department Biotechnology Central Laboratory Horticulture Research Institute (HRI) Agricultural Research Center (ARC) Giza Egypt Fruit Crops Handling Research Department Chemical Analysis Central Laboratory Horticulture Research Institute (HRI) Agricultural Research Center (ARC) Giza Egypt Viticulture Research Department Horticulture Research Institute (HRI) Agricultural Research Center (ARC) Giza Egypt Fruit Breeding Department Horticulture Research Institute (HRI) Agricultural Research Center (ARC) Giza Egypt National Gene Bank (NGB) Agricultural Research Center (ARC) Giza Egypt

Grape (Vitis vinifera L.) is assumed as one of the most valuable and popular fruit crops all over the world. In this study, ten of local grape germplasm were characterized considering phenotypic diversity and genetic features under Egyptian conditions. Selected local grapes;Baltim Eswid, Edkawy, Matrouh Eswid, Bez el-Naka, Bez el-Anza, Romy Abiad, Romy Ahmer, Gharibi, Fayoumi and Banaty, were spread geographically among seven national governorates. A total of 58 attributes were characterized grape germplasm for the distinctness of vine parts. For molecular characterization, 9 nuclear SSR loci were analysed. Data revealed a broad sense of similarity at the level of studied morphological attributes, where the highest similarity (0.93) was between Romy Ahmer and Romy Abiad. A total of 24 alleles, ranging from 124 - 253 bp in size, were detected at the nine tested loci with an average of 2.67 alleles per locus. The amplification products in all of the 9 SSRs loci showed polymorphism among the 10 grapevine cultivars. The genetic relatedness among most of the cultivars was in accordance with their identification based on ampelographic properties. Data of phenotypic and molecular analysis revealed high variability of Vitis germplasm in Egypt and contributed substantially to our awareness of valuable local grape genetic resources which are on the verge of extinction.

关键词： Ampelographic Germplasm Grape Identification Molecular

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Effect of Cyclic Stress Reduction on the Creep Characteristics of AZ91 Magnesium Alloy

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Acta Metallurgica Sinica(English Letters) 2015年第8期28卷 1065-1073页

作者： Alaa Farag abd el-Rehim Physics Department Faculty of Science King Khalid University Physics Department Faculty of Education Ain Shams University

The creep deformation behavior of aged AZ91 magnesium alloy under the cyclic stress reduction has been investigated in the temperature range 353–383 K. The microstructural evolution of the AZ91 magnesium alloy at different heat treatment conditions has been studied using optical microscopy and scanning electron microscopy. The minimum strain rate, e_min, was found to be higher under cyclic stress reduction condition than that under static creep condition for the same maximum stress. Cyclic creep acceleration is interpreted using the interaction of moving dislocations with the existing b-phase（Mg17Al12） precipitates. The mean value of the activation energy of secondary creep stage was found to be equal to that quoted for lattice self-diffusion of magnesium mechanism.

关键词： Magnesium alloys Microstructure Cyclic stress Dislocations

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Congruence Pairs of Decomposable MS-Algebras

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Chinese Annals of Mathematics,Series B 2021年第4期42卷 561-574页

作者： Sanaa el-ASSAR abd el-Mohsen BADAWY Department of Mathematics Faculty of ScienceTanta UniversityTantaEgypt

In this paper,the authors first introduce the concept of congruence pairs on the class of decomposable MS-algebras generalizing that for principal MS-algebras(see[13]).They show that every congruence relationθon a decomposable MS-algebra L can be uniquely determined by a congruence pair(θ_(1),θ_(2)),whereθ_(1)is a congruence on the de Morgan subalgebra L^(∞)of L andθ_(2)is a lattice congruence on the sublattice D(L)of *** obtain certain congruence pairs of a decomposable MS-algebra L via central elements of ***,they characterize the permutability of congruences and the strong extensions of decomposable MS-algebras in terms of congruence pairs.

关键词： MS-Algebras Decomposable MS-algebras Congruence pairs Strong extension Permutability Congruence lattices

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Human recombinant soluble ACE2(hrsACE2)shows promise for treating severe COVID19

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Signal Transduction and Targeted Therapy 2020年第1期5卷 303-304页

作者： Tarek Mohamed abd el-aziz Ahmed Al-Sabi James D.Stockand Department of Cellular and Integrative Physiology University of Texas Health Science Center at San AntonioSan AntonioTX 78229-3900USA Zoology Department Faculty of ScienceMinia UniversityEl-Minia 61519Egypt College of Engineering and Technology American University of the Middle EastKuwaitKuwait

A recent study by Zoufaly et *** in The Lancet Respiratory Medicine describes encouraging data from the first severe COVID-19 patient successfully treated with human recombinant soluble angiotensin-converting enzyme-2(hrsACE2).1 The published data document upon treatment of an adaptive immune response,the disappearance of the virus swiftly from the serum,the nasal cavity and lungs,and a reduction of inflammatory cytokine levels that are critical for COVID-19 ***,the use of hrsACE2 did not impede the generation of neutralizing antibodies,leading to a significant clinical improvement of the treated patient.

关键词： ACE2 al cavity

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Stock Market Trading Based on Market Sentiments and Reinforcement Learning

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Computers, Materials & Continua 2022年第1期70卷 935-950页

作者： K.M.Ameen Suhail Syam Sankar Ashok S.Kumar Tsafack Nestor Naglaa F.Soliman Abeer D.Algarni Walid el-Shafai Fathi E.abd el-Samie Department of Computer Science&Engineering NSS College of EngineeringPalakkad678008KeralaIndia Department of electronics and Communication Engineering NSS College of EngineeringPalakkad678008KeralaIndia Unitéde Recherche de Matière Condensée D’Electronique et de Traitement du Signal(URAMACETS)Department of PhysicsUniversity of DschangP.O.Box 67DschangCameroon Department of Information Technology College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh84428Saudi Arabia Department electronics and electrical Communications Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt

Stock market is a place,where shares of different companies are *** is a collection of buyers’and sellers’*** this digital era,analysis and prediction in the stock market have gained an essential role in shaping today’s *** market analysis can be either fundamental or *** analysis can be performed either with technical indicators or through machine learning *** this paper,we report a system that uses a Reinforcement Learning(RL)network and market sentiments to make decisions about stock market *** system uses sentiment analysis on daily market news to spot trends in stock *** sentiment analysis module generates a unified score as a measure of the daily news about *** score is then fed into the RL module as one of its *** RL section gives decisions in the form of three actions:buy,sell,or *** objective is to maximize long-term future *** have used stock data of Apple from 2006 to 2016 to interpret how sentiments affect *** stock price of any company rises,when significant positive news become available in the public *** results reveal the influence of market sentiments on forecasting of stock prices.

关键词： Deep learning machine learning daily market news reinforcement learning stock market

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Treatment and prevention of epilepsy in onchocerciasis-endemic areas is urgently needed

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Infectious Diseases of Poverty 2024年第1期13卷 85-89页

作者： Robert Colebunders Joseph Nelson Siewe Fodjo Olivia Kamoen Luis-Jorge Amaral Amber Hadermann Chiara Trevisan Mark J.Taylor Julia Gauglitz Achim Hoerauf Yasuaki Sato Katja Polman Maria-Gloria Basanez Dan Bhwana Thomson Lakwo Gasim abd-elfarag Sebastien D.Pion Global Health Institute University of AntwerpAntwerpBelgium Department of Neurology Heilig Hart ZiekenhuisLierBelgium Department of Public Health Institute of Tropical MedicineAntwerpBelgium Liverpool School of Tropical Medicine LiverpoolUK Department of Computer Science University of AntwerpAntwerpBelgium Institute of Medical Microbiology Immunology and ParasitologyUniversity Hospital BonnBonnGermany German Center for Infection Research(DZIF) Partner Site Bonn-CologneBonnGermany School of Global Humanities and Social Sciences Nagasaki UniversityNagasakiJapan MRC Centre for Global Infectious Disease Analysis and London Centre for Neglected TropicalDisease Research Department of Infectious Disease EpidemiologySchool of Public HealthImperial College LondonLondonUK National Institute for Medical Research TangaTanzania Vector Control Division Ministry of HealthKampalaUganda School of Public Health University of JubaJubaSouth Sudan Access for Humanity JubaSouth Sudan French National Research Institute for Sustainable Development MontpellierFrance

Background There is increasing epidemiological evidence supporting the association between onchocerciasis and seizures, reinforcing the concept of onchocerciasis-associated epilepsy (OAE). The aim of this paper is to provide an update on the new knowledge about OAE and to propose recommendations to the World Health Organization how to address this public health *** text During the 2nd International Workshop on OAE held on 19-21 September, 2023, in Antwerp, Belgium, participants recognised OAE as a substantial yet neglected public health problem, particularly in areas of sub-Saharan Africa where onchocerciasis remains hyperendemic. Evidence from prospective population-based studies suggest that strengthening onchocerciasis elimination efforts leads to a significant reduction of OAE incidence. There is a need to validate an OAE case definition to estimate the burden of disease and identify onchocerciasis-endemic areas requiring intensification of onchocerciasis elimination programmes and integration of epilepsy care. It is expected that raising awareness about OAE will boost the population uptake of ivermectin. The implementation of a community-based epilepsy treatment programme offering free anti-seizure medications (ASMs) has shown high effectiveness in reducing the frequency of seizures and improving the overall quality of life of people with *** To reduce OAE burden, enhanced collaboration between onchocerciasis and mental health programmes at community, national, and international levels is required. Urgent efforts are needed to ensure the uninterrupted provision of free ASMs in onchocerciasis-endemic areas. Furthermore, OAE should be included in the quantification of the onchocerciasis disease burden.

关键词： Onchocerciasis Morbidity Burden of disease Prevention Ivermectin Epilepsy Nodding syndrome Treatment Children Policy

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Spectrofluorimetric and Spectrophotometric Stability- Iwndicating Methods for the Analysis of Veralipride in Presence of Its Degradants and in Spiked Human Plasma

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Chinese Journal of Chemistry 2012年第1期30卷 183-189页

作者： Salama,Nahla Nour el Din Ahmed Salem,Maissa Yacoub abd el Halim,Lobna Mohammed abdel Fattah,Laila EI-sayed National Organization for Drug Control and Research(NODCAR) 6 Abu Hazem StreetPyramids AveP.O.Box 29GizaEgypt Analytical Chemistry Department Faculty of PharmacyCairo UniversityCairoEgypt Analytical Chemistry Department Faculty of PharmacyMisr University for Science and Technology6th of OctoberEgypt

Spectrofluorimetric and spectrophotometric stability-indicating methods were developed and validated for analysis of veralipride （Ver） in presence of its hydrolytic and oxidative degradants. The spectrofluorimetric method was based on direct measurement of the intrinsic fluorescence of Ver at 366 nm after excitation at 299 nm using sodium lauryl sulfate （SLS） as micelle enhancer. The fluorescence intensity plot was linear over the concentration range 1.0-10.0 ***-1. The high sensitivity of the method allowed its successful application to the analysis of Ver in spiked human plasma. Two other methods were developed. They are based on the oxidative coupling reac- tion of Vet with 3-methyl benzothiazolin-2-one hydrazone （MBTH） hydrochloride in presence of ceric ammonium sulphate in an acidic medium. The first method depends on spectrophotometric measurement of the stable green colored oxidative coupling product at 660 nm. The different experimental parameters affecting the reaction were optimized. Linearity range is 10.0--100.0 ~tgomL-1. The second method depends on a fluorescence quenching effect of Vet on the fluorescence of Ce3＋. The difference in fluorescence intensity was measured at 380 nm after excitation at 300 nm. This method is applicable over the concentration ranges 0.25-2.50 pg-mL-1. The methods were validated according to the ICH guidelines. They were successfully applied for the analysis of Ver in drug substance, drug product and in laboratory prepared mixtures containing different percentages of hydrolytic and oxidative degradants.

关键词： veralipride micelle-enhanced fluorescence MBTH validation stability fluorescence quenching Ce3+

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Securing Healthcare Data in IoMT Network Using Enhanced Chaos Based Substitution and Diffusion

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Computer Systems Science & Engineering 2023年第11期47卷 2361-2380页

作者： Musheer Ahmad Reem Ibrahim Alkanhel Naglaa FSoliman Abeer D.Algarni Fathi E.abd el-Samie Walid el-Shafai Department of Computer Engineering Jamia Millia IslamiaNew Delhi110025India Department of Information Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Department of electronics and electrical Communications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Security Engineering Laboratory Department of Computer SciencePrince Sultan UniversityRiyadh11586Saudi Arabia

Patient privacy and data protection have been crucial concerns in Ehealthcare systems for many *** modern-day applications,patient data usually holds clinical imagery,records,and other medical ***,the Internet of Medical Things(IoMT),equipped with cloud computing,has come out to be a beneficial paradigm in the healthcare ***,the openness of networks and systems leads to security threats and illegal ***,reliable,fast,and robust security methods need to be developed to ensure the safe exchange of healthcare data generated from various image sensing and other IoMT-driven devices in the IoMT *** paper presents an image protection scheme for healthcare applications to protect patients’medical image data exchanged in IoMT *** proposed security scheme depends on an enhanced 2D discrete chaotic map and allows dynamic substitution based on an optimized highly-nonlinear S-box and diffusion to gain an excellent security *** optimized S-box has an excellent nonlinearity score of *** new image protection scheme is efficient enough to exhibit correlation values less than 0.0022,entropy values higher than 7.999,and NPCR values around 99.6%.To reveal the efficacy of the scheme,several comparison studies are *** comparison studies reveal that the novel protection scheme is robust,efficient,and capable of securing healthcare imagery in IoMT systems.

关键词： Secure communication healthcare data encryption Internet of Medical Things(IoMT) discrete chaotic map substitution box(S-box)

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