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Applying and Comparison of Chaotic-Based Permutation Algorithms for Audio Encryption

Computers, materials & Continua 2021年第6期67卷 3161-3176页

作者： osama m.Abu Zaid medhat A.Tawfeek Saad Alanazi Department of Computer Science Faculty of Computers and InformationKafrelsheikh UniversityEgypt Department of Computer Science College of Computer and Information SciencesJouf UniversityKSA Department of Computer Science Faculty of Computers and InformationMenoua UniversityEgypt

This research presents,and claries the application of two permutation algorithms,based on chaotic map systems,and applied to a le of speech *** are the Arnold cat map-based permutation algorithm,and the Baker’s chaotic map-based permutation *** algorithms are implemented on the same speech signal ***,both the premier and the encrypted le histograms are documented and *** speech signal amplitude values with time signals of the original le are recorded and plotted against the encrypted and decrypted ***,the original le is plotted against the encrypted le,using the spectrogram frequencies of speech signals with the signal *** permutation algorithms are used to shufe the positions of the speech les signals’values without any changes,to produce an encrypted speech le.A comparative analysis is introduced by using some of sundry statistical and experimental analyses for the procedures of encryption and decryption,e.g.,the time of both procedures,the encrypted audio signals histogram,the correlation coefcient between specimens in the premier and encrypted signals,a test of the Spectral Distortion(SD),and the Log-Likelihood Ratio(LLR)*** outcomes of the different experimental and comparative studies demonstrate that the two permutation algorithms(Baker and Arnold)are sufcient for providing an efcient and reliable voice signal encryption ***,the Arnold’s algorithm gives better results in most cases as compared to the results of Baker’s algorithm.

关键词： Arnold’s cat map chaotic maps permutation algorithms speech encryption Baker’s chaotic map

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Dual Solutions of mHD Boundary Layer Flow of a micropolar Fluid with Weak Concentration over a Stretching/Shrinking Sheet

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Communications in Theoretical Physics 2017年第4期67卷 449-457页

作者： Z.H.Khan m.qasim Naeema Ishfaq W.A.Khan Department of mathematics University of MalakandChakdaraDir(Lower)Khyber PakhtunkhwaPakistan Department of mathematics COMSATS Institute of Information TechnologyPark RoadChak ShahzadIslamabadPakistan School of mathematical Sciences Peking UniversityBeijing 100871China Department of mechanical and Industrial Engineering College of Engineering Majmaah UniversityMajmaah 11952Kingdom of Saudi Arabia

We investigate the dual solutions for the mHD flow of micropolar fluid over a stretching/shrinking sheet with heat transfer. Suitable relations transform the partial differential equations into the ordinary differential *** forms solutions are also obtained in terms of confluent hypergeometric function. This is the first attempt to determine the exact solutions for the non-linear equations of mHD micropolar fluid model. It is demonstrated that the microrotation parameter helps in increasing Nusselt number and the dual solutions exist for all fluid flow parameters under consideration. The dual behavior of dimensionless velocity, temperature, microrotation, skin-friction coefficient,local Nusselt number is displayed on graphs and examined.

关键词： mHD micropolar fluid stretching/shrinking sheet exact and dual solutions

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Impact of cytokine storm and systemic inflammation on liver impairment patients infected by SARS-CoV-2:Prospective therapeutic challenges

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World Journal of Gastroenterology 2021年第15期27卷 1531-1552页

作者： Fares E m Ali Zuhair m mohammedsaleh mahmoud m Ali osama m Ghogar Department of Pharmacology and Toxicology Faculty of PharmacyAl-Azhar UniversityAssiut BranchAssiut 71524Egypt Department of medical Laboratory Technology Faculty of Applied Medical SciencesUniversity of TabukTabuk 71491Saudi ArabiaDepartment of Medical Laboratory TechnologyFaculty of Applied Medical SciencesUniversity of TabukTabuk 71491Saudi Arabia Pre-graduated students Faculty of PharmacyAl-Azhar UniversityAssiut BranchAssiut 71524Egypt

Coronavirus disease 2019(COVID-19)is a devastating worldwide pandemic infection caused by a severe acute respiratory syndrome namely coronavirus 2(SARS-CoV-2)that is associated with a high spreading and mortality *** the date this review was written,SARS-CoV-2 infected about 96 million people and killed about 2 million *** arguments disclosed the high mortality of COVID-19 due to acute respiratory distress syndrome or change in the amount of angiotensin-converting enzyme 2(ACE2)receptor expression or cytokine storm strength *** a similar pattern,hepatic impairment patients co-infected with SARS-CoV-2 exhibited overexpression of ACE2 receptors and cytokine storm overwhelming,which worsens the hepatic impairment and increases the mortality *** this review,the impact of SARS-CoV-2 on hepatic impairment conditions we ***,we focused on the recent studies that indicated cytokine storm as well as ACE2 as the main factors for high COVID-19 spreading and mortality while hinting at the potential therapeutic strategies.

关键词： COVID-19 Hepatic impairment SARS-CoV-2 Cytokine storm Immunomodulators receptors

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Particle breakage of sand subjected to friction and collision in drum tests

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Journal of Rock mechanics and Geotechnical Engineering 2021年第2期13卷 390-400页

作者： Fangwei Yu Chonglei Zhang Qijun Xie Lijun Su Tao Zhao m.qasim Jan Key Laboratory of mountain Hazards and Earth Surface Process of CAS Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu610041China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing100101China China-Pakistan Joint Research Center on Earth Sciences CAS-HECIslamabad45320Pakistan Department of Civil Engineering The University of TokyoTokyo113-8656Japan University of Chinese Academy of Sciences Beijing100049China Department of Civil and Environmental Engineering Brunel University LondonLondonUB83PHUK National Centre of Excellence in Geology University of PeshawarPeshawar25130Pakistan

This paper presents a laboratory experimental study on particle breakage of sand subjected to friction and collision,by a number of drum tests on granular materials(silica sand No.3 and ceramic balls)to investigate the characteristics of particle breakage and its effect on the characteristics of grain size distribution of *** breakage increased in up convexity with increasing duration of drum tests,but increased linearly with increasing number of *** breakage showed an increase,followed by a decrease while increasing the amount of *** may be existence of a characteristic amount of sand causing a maximum particle *** tests caused much less particle breakage than collision tests *** and collision resulted in different mechanisms of particle breakage,mainly by abrasion for friction and by splitting for *** fines content increased with increasing relative *** breakage in the friction tests(abrasion)resulted in a sharper increase but with a smaller total amount of fines content in comparison with that in the collision tests(splitting).For the collision tests,the fines content showed a decrease followed by an increase as the amount of sand increased,whereas it increased in up convexity with increasing number of *** characteristic grain sizes D_(10) and D_(30) decreased in down convexity with increasing relative breakage,which could be described by a natural exponential ***,the characteristic grain sizes D50 and D60 decreased linearly while increasing the relative *** addition,the coefficients of uniformity and curvature of sand showed an increase followed by a decrease while increasing the relative breakage.

关键词： Grain size distribution Drum tests Granular flow Particle breakage

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An Optimized Convolutional Neural Network Architecture Based on Evolutionary Ensemble Learning

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Computers, materials & Continua 2021年第12期69卷 3813-3828页

作者： qasim m.Zainel murad B.K.horsheed Saad Darwish Amr A.Ahmed College of Physical Education and Sports Sciences University of KirkukKirkuk36001Iraq College of Administration&Economics University of KirkukKirkuk36001Iraq Department of Information Technology Institute of Graduate Studies and ResearchAlexandria UniversityAlexandriaEgypt Department of Computer Engineering Alexandria Higher Institute of Engineering&Technology(AIET)AlexandriaEgypt

Convolutional Neural Networks(CNNs)models succeed in vast *** are available in a variety of topologies and *** challenge in this area is to develop the optimal CNN architecture for a particular issue in order to achieve high results by using minimal computational resources to train the *** proposed framework to automated design is aimed at resolving this *** proposed framework is focused on a genetic algorithm that develops a population of CNN models in order to find the architecture that is the best *** comparison to the co-authored work,our proposed framework is concerned with creating lightweight architectures with a limited number of parameters while retaining a high degree of validity accuracy utilizing an ensemble learning *** architecture is intended to operate on low-resource machines,rendering it ideal for implementation in a number of *** common benchmark image datasets are used to test the proposed framework,and it is compared to peer competitors’work utilizing a range of parameters,including accuracy,the number of model parameters used,the number of GPUs used,and the number of GPU days needed to complete the *** experimental findings demonstrated a significant advantage in terms of GPU days,accuracy,and the number of parameters in the discovered model.

关键词： Convolutional neural networks genetic algorithm automatic model design ensemble learning

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Petrogenesis of the Late Cretaceous Tholeiitic Volcanism and Oceanic Island Arc Affinity of the Chagai Arc, Western Pakistan

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1248-1263页

作者： Rehanul Haq SIDDIQUI m. qasim JAN mohammad Asif KHAN m. Ishaq KAKAR John D. FODEN Baluchistan University of Information Technology Engineering and Management Sciences Quetta Pakistan National Centre of Excellence in Geology University of Peshawar Peshawar & COMSTECH Islamabad Pakistan Karakoram International University Gilgit Pakistan Centre of Excellence in mineralogy University of Baluchistan Quetta Pakistan Department of Earth Sciences University of Adelaide SA 5005 Australia

The Late Cretaceous Chagai arc outcrops in western Pakistan, southern Afghanistan and eastern Iran. It is in the Tethyan convergence zone, formed by northward subduction of the Arabian oceanic plate beneath the Afghan block. The oldest unit of the Chagai arc is the Late Cretaceous Sinjrani Volcanic Group. This is composed of porphyritic lava flows and volcaniclastic rocks, and subordinate shale, sandstone, limestone and chert. The flows are fractionated low-K tholeiitic basalts, basaltic- andesites, and andesites. Relative enrichment in their LILE and depletion in HFSE, and negative Nb and Ta and positive K, Ba and Sr anomalies point to a subduction-related origin. Compared to mORB, the least fractionated Chagai basalts have low Na2O, Fe2O3^T, CaO, Ti, Zr, Y and ^87Sr/^86Sr. Rather than an Andean setting, these results suggest derivation from a highly depleted mantle in an intraoceanic arc formed by Late Cretaceous convergence in the Ceno-Tethys. The segmented subduction zone formed between Gondwana and a collage of small continental blocks （Iran, Afghan, Karakoram, Lhasa and Burma） was accompanied by a chain of oceanic island arcs and suprasubduction ophiolites including Semail, Zagros, Chagai-Raskoh, Kandahar, muslim Bagh, Waziristan and Kohistan-Ladakh, Nidar, Nagaland and manipur. These complexes accreted to the southern margin of Eurasia in the Late Cretaceous.

关键词： Chagai arc tholeiitic volcanics Late Cretaceous western Pakistan

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A statistical approach to enhance the productivity of Streptomyces baarensis mH-133 for bioactive compounds

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Synthetic and Systems Biotechnology 2024年第2期9卷 196-208页

作者： mohamed H.Kalaba Gamal m.El-Sherbiny osama m.Darwesh Saad A.moghannem Botany and microbiology Department Faculty of Science(Boys)Al-Azhar UniversityCairo 11884Egypt Agricultural microbiology Department National Research CentreDokkiCairoEgypt

The goal of this study was to use statistical optimization to change the nutritional and environmental conditions so that Streptomyces baarensis mH-133 could make more active *** trials were used to screen for critical variables influencing productivity using the Placket-Burman Design *** mH-133 is significantly influenced by elicitation,yeast extract,inoculum size,and incubation period in terms of antibacterial activity.A total of 27 experimental trials with various combinations of these factors were used to carry out the response surface technique using the Box-Behnken *** analyses revealed that the model was highly significant(pmination(R2)of ***,the model predicted that the response as inhibition zone diameter would reach a value of 27 *** optimal conditions,*** mH-133 produced 18.0 g of crude extract to each 35L and was purified with column *** active fraction exhibiting antibacterial activity was characterized using spectroscopic *** mIC and mBC values varied between 37.5 and 300μg/ml and 75 and 300μg/ml,*** conclusion,the biostatistical optimization of the active fraction critical variables,including environmental and nutritional conditions,enhances the production of bioactive molecules by Streptomyces species.

关键词： S.baarensis mH-133 Placket-Burman designBox-Behnken design ESKAPE Antibacterial activity

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Combinatory effect of hesperetin and mesenchymal stem cells on the deteriorated lipid profile,heart and kidney functions and antioxidant activity in STZ-induced diabetic rats

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BIOCELL 2020年第1期44卷 27-39页

作者： osama m.AHmED mohamed A.HASSAN Ablaa S.SALEH Experimental Obesity and Diabetes Research Lab(EODRL) Physiology DivisionZoology DepartmentFaculty of ScienceBeni-Suef UniversityPO 62521Beni-SuefEgypt Biochemistry Department Faculty of ScienceBeni-Suef UniversityPO 62521Beni-SuefEgypt

This study aimed to assess the effect of hesperetin and/or bone marrow-derived mesenchymal stem cells(Bm-mSCs)on disturbed lipid profile,heart and kidney functions,oxidative stress and antioxidant defense system in streptozotocin(STZ)-induced diabetic *** 1 diabetes mellitus(T1Dm)was induced in male Wistar rats by injecting 40 mg/kg body weight(b.w.)STZ dissolved in citrate buffer(pH 4.5).The diabetic rats were treated with hesperetin orally administered at dose 20 mg/kg b.w.,Bm-mSCs intravenously injected at a dose of 1 x 106 cells/rat/week and their combination for 6 *** diabetic rats exhibited lipid abnormalities manifested by elevated serum levels of total cholesterol,triglycerides,LDL-cholesterol and VLDL-cholesterol and lowered HDL-cholesterol as well as elevated liver cholesterol and triglycerides content in association with the resultant fasting and postprandial hyperglycemia and insulin *** heart function biomarkers including CK-mB,AST and LDH activities as well as levels of kidney function parameters,creatinine,and urea,were significantly raised in the serum of diabetic *** changes were concomitant with abnormal redox balance represented by elevated lipid peroxidation,decreased glutathione content,and suppressed antioxidant enzyme activities in both heart and kidney of diabetic *** previous deleterious alterations were significantly ameliorated after the treatment of diabetic rats with hesperetin and Bm-mSCs singly or in combination;the treatment with hesperetin together with Bm-mSCs was the most *** on these findings,it can be concluded that the use of hesperetin with Bm-mSCs may have more additive therapeutic value than their uses singly in *** addition,the ameliorative effects of hesperetin and Bm-mSCs on lipid profile and heart and kidney functions in diabetic rats may be mediated,at least in part,via their suppressive effects on oxidative stress and ameliorative effects on the antioxidant defense system

关键词： Bm-mSCs Hesperetin Streptozotocin-induced diabetes

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Application of microalgal-ZnO-NPs for reusing polyester/cotton blended fabric wastes after modification by cellulases enzymes

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Waste Disposal and Sustainable Energy 2023年第4期5卷 471-482页

作者： osama m.Darwesh Naser G.Al-Balakocy Ahmed Ghanem Ibrahim A.matter Agricultural microbiology Department National Research Centre33 EL-Buhouth St.DokkiCairo12622Egypt Protenic and manmade Fibers Department National Research CentreDokkiCairo12622Egypt Packaging materials Department National Research CentreCairo12622Egypt

Polyester/cotton(PET/C)blended fabric wastes are produced daily in huge amounts,which constitutes an economic loss and an environmental threat if it is not reused *** textile waste recycling technologies put much effort into developing fabric materials with unique properties,such as bioactivity or new optical goods based on modern technologies,especially *** this study,zinc oxide nanoparticles(ZnO-NPs)were biosynthesized using the aqueous extract of Dunaliella *** immobilized on PET/C waste fabrics after enzymatically activated with *** produced Dunaliella-ZnO-NPs(10–20 nm with a spherical shape)were characterized by High-resolution transmission electron microscopy(HRTEm),Fourier-transform infrared spectroscopy(FTIR),X-Ray diffraction analysis(XRD),and Scanning electron microscopy-energy dispersive X-ray analyzer(SEm-EDAX),and some functional groups,such as CH,CO,NH,and CN(due to the presence of carboxyl,proteins and hydroxyl groups),were detected,revealing the biosynthesis of *** analysis showed that the resulting ZnO-NPS had potent antimicrobial effects,Ultraviolet(UV)protection capabilities,and no cytotoxic effects on the normal human fibroblast cell line(BJ1).On the other hand,enzymatic treatments of PET/C fabric waste with cellulases enhanced the immobilization of biosynthetic nanoparticles on their *** PET/C fabrics loaded with Dunaliella-ZnO-NPs showed antibacterial and UV protection capabilities making them an eco-friendly and cost-effective candidate for numerous *** applications can include the manufacture of active packaging devices,wastewater treatment units,and many other environmental applications.

关键词： Wastewater remediation Polyester/cotton wastes Cytotoxicity microalgal-ZnO-NPs Dunaliella sp. microbial nanotechnology

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Prevalence and antimicrobial resistance pattern of bacterial strains isolated from patients with urinary tract infection in messalata Central Hospital, Libya

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Asian Pacific Journal of Tropical medicine 2016年第8期9卷 749-754页

作者： mahmoud A.mohammed Tarig mS Alnour osama m.Shakurfo mariam m.Aburass Department of medical Laboratory Technology Faculty of Medical Technologies-Messalata Almergib University Department of Food Hygiene and Control Faculty of Veterinary Medicine Mansoura University Department of medical Laboratory Technology Faculty of Medical Technologies-MessalataAlmergib University Department of medical Laboratory Technology Faculty of Applied Medical Sciences University of Tabuk

Objective: To investigate the prevalence of urinary tract infection among patients at messalata Central Hospital, Libya, to identify the causative bacteria, and to explore their resistance pattern to antimicrobials. methods: A total number of 1 153 urine samples were collected from patients, who attended daily to messalata Central Hospital, Libya, in a study extended for one year. Antimicrobial susceptibility testing and isolates typing were done using Phoenix BD(BD diagnostic). Resistance was confirmed manually using agar disk diffusion method. Results: Of the 1 153 urine samples tested, 160(13.9%) samples were positive, from which 17 different, solely Gram negative, uropathogens were identified. Escherichia coli were the most prevalent(55.6%) bacteria, followed by Klebsiella pneumoniae subspecies pneumoniae(16.3%), Proteus mirabilis(6.3%), Pseudomonas aeruginosa(5.6%), Enterobacter cloacae and Klebsiella oxytoca(2.5%, each), Citrobacter koseri and Providencia rettgeri(1.9%, each), Acinetobacter baumannii, Enterobacter aerogenes and Proteus vulgaris(1.3%, each), and Aeromonas caviae, Citrobacter freundii, Cronobacter sakazakii, Enterobacter amnigenus biogroup 2, Pseudomonas putida and Serratia marcescens(0.6%, each). The isolated uropathogens showed increased levels of resistance ranged from 10.5% to 64.5%, with an overall resistance of 28.9%. Amikacin was the most effective antimicrobial followed by Imipenem and meropenem(0%, 0.6% and 2.5% resistance, respectively); while, Cephalothin and Ampicillin were the least(80.6% and 90.0% resistance, respectively) effective. Conclusions: The obtained results emphasized the emergence of highly resistant bacteria to most of tested antimicrobials and raise the alarm for physicians to change their treatment pattern depending on antimicrobial susceptibility results.

关键词： Urinary tract infection(UTI) Uropathogens Significant Bacteruria Antimicrobial susceptibility testing(AST) Antimicrobial resistance Enterobacteriaceae

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