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A Low-Cost and High-Performance Cryptosystem Using Tripling-Oriented Elliptic Curve

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Intelligent Automation & Soft Computing 2023年第8期37卷 1807-1831页

作者： Mohammad alkhatib wafa S.aldalbahy Computer Science Department College of Computer and Information SciencesImam Mohammad Ibn Saud Islamic University(IMSIU)RiyadhSaudi Arabia

Developing a high-performance public key cryptosystem is crucial for numerous modern security *** Elliptic Curve Cryptosystem(ECC)has performance and resource-saving advantages compared to other types of asymmetric ***,the sequential design implementation for ECC does not satisfy the current applications’performance ***,several factors should be considered to boost the cryptosystem performance,including the coordinate system,the scalar multiplication algo-rithm,and the elliptic curve *** tripling-oriented(3DIK)form is imple-mented in this work due to its minimal computational complexity compared to other elliptic curves *** experimental study explores the factors playing an important role in ECC performance to determine the best combi-nation that leads to developing high-speed *** proposed cryptosystem uses parallel software implementation to speed up ECC *** our knowledge,previous studies have no similar software implementation for 3DIK *** by using parallel design,projective coordinates,and a fast scalar multiplication algorithm,the proposed 3DIK ECC improved the speed of the encryption process compared with other counterparts and the usual sequential *** highest performance level for 3DIK ECC was achieved when it was implemented using the Non-Adjacent Form algorithm and homogenous *** to the costly hardware implementations,the proposed software implementation is cost effective and can be easily adapted to other *** addition,the power con-sumption of the proposed ECC is analyzed and compared with other known ***,the current study presents a detailed overview of the design and implementation of 3DIK ECC.

关键词： Security cryptography elliptic curves software implement greatation multithreading

Downhill Zagreb Topological Indices and <i>M<SUB>dn</SUB></i>-Polynomial of Some Chemical Structures Applied for the Treatment of COVID-19 Patients

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Open Journal of Applied Sciences 2021年第4期10卷 395-413页

作者： Bashair al-Ahmadi Anwar Saleh wafa al-Shammakh Department of Mathematics Faculty of Science University of Jeddah Jeddah Saudi Arabia

A graphical index is a numeric value corresponding to a graph which is structurally invariant and in molecular graph theory these invariants are known as topological indices. In the field of Chemical and Medical Sciences, the topological indices are used to study the chemical, biological, medical and pharmaceutical features of drugs. With reference to the previous deadly diseases, the COVID-19 pandemic has considered to be the biggest life threatening issue that modern medicines have ever tackled. COVID-19 is immedicable and even the existing treatments are only helping the certain group of sufferers. Scientists have tested available antiviral agents and got a favorable impact on recovering from pandemic. Some of these antiviral agents are remdesivir, chloroquine, hydroxychloroquine, theaflavin and dexamethasone. Keeping in view of the importance of topological indices in the study of pharmaceutical and chemical drugs, in this paper, we calculate the Mdn-Polynomial, some downhill Zagreb topological indices and some downhill Zagreb polynomials of some of the anti viral agents remdesivir, chloroquine, hydroxychloroquine, theaflavin and dexamethasone. The results thus obtained may be useful for the finding new medicine and vaccine for the treatment of COVID-19.

关键词： COVID-19 Remdesivir Chloroquine Hydroxychloroquine Theaflavin Dexamethasone Mdn-Polynomial Downhill Zagreb Polynomial

Profiling cellular bioenergetics, glutathione levels, and caspase activities in stomach biopsies of patients with upper gastrointestinal symptoms

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World Journal of Gastroenterology 2015年第2期21卷 644-652页

作者： ali S alfazari Bayan al-Dabbagh wafa al-Dhaheri Mazen S Taha Ahmad A Chebli Eva M Fontagnier Zaher Koutoubi Jose Kochiyi Sherif M Karam Abdul-Kader Souid Department of Medicine United Arab Emirates UniversityPO Box 17666Al AinUnited Arab Emirates Department of Chemistry College of ScienceUAE UniversityPO Box 15551Al AinUnited Arab Emirates Department of Anatomy United Arab Emirates UniversityPO Box 17666Al AinUnited Arab Emirates Tawam Hospital PO Box 15258Al AinUnited Arab Emirates Department of Pediatrics United Arab Emirates UniversityPO Box 15258Al AinUnited Arab Emirates

AIM: To measure biochemical parameters in stomach biopsies and test their suitability as diagnostic biomarkers for gastritis and precancerous ***: Biopsies were obtained from the stomachs of two groups of patients(n = 40) undergoing fiberoptic endoscopy due to upper gastrointestinal symptoms. In the first group(n = 17), only the corpus region was examined. Biopsies were processed for microscopic examination and measurement of mitochondrial O2 consumption(cellular respiration), cellular adenosine triphosphate(ATP), glutathione(GSH), and caspase activity. In the second group of patients(n = 23), both corpus and antral regions were studied. Some biopsies were processed for microscopic examination, while the others were used for measurements of cellular respiration and GSH ***: Microscopic examinations of gastric corpus biopsies from 17 patients revealed normal mucosae in 8 patients, superficial gastritis in 7 patients, and chronic atrophic gastritis in 1 patient. In patients with normal histology, the rate(mean ± SD) of cellular respiration was 0.17 ± 0.02 μmol/L O2 min-1 mg-1, ATP content was 487 ± 493 pmol/mg, and GSH was 469 ± 98 pmol/mg. Caspase activity was detected in 3 out of 8 specimens. The values of ATP and caspase activity were highly variable. The presence of superficial gastritis had insignificant effects on the measured biomarkers. In the patient with atrophic gastritis, cellular respiration was high andATP was relatively low, suggesting uncoupling oxidative phosphorylation. In the second cohort of patients, the examined biopsies showed either normal or superficial gastritis. The rate of cellular respiration(O2. μmol/L min-1 mg-1) was slightly higher in the corpus than the antrum(0.18 ± 0.05 vs 0.15 ± 0.04, P = 0.019). The value of GSH was about the same in both tissues(310 ± 135 vs 322 ± 155, P = 0.692).CONCLUSION: The corpus mucosa was metabolically more active than the antrum tissue. The data in this study will help in understandi

关键词： Stomach Gastritis Mitochondria Gastric mucosa Cell

A Challenging Approach to Improve the Low Affinity of Acrylic Fibres to Be Successfully Dyed with a Bio-Colorant Extracted from Grape Marc

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Journal of Renewable Materials 2019年第3期7卷 289-300页

作者： Noureddine Baaka Manel Ben Ticha wafa Haddar Mohamed Farouk Mhenni University of Monastir Faculty of Sciences of MonastirResearch Unity of Applied Chemistry and Environment5000 MonastirTunisia National Engineering School of Monastir 5019 MonastirTunisia Higher Institute of Technological Studies 5070Ksar HellalMonastirTunisia

Acrylic fibres are highly crystalline and non-polar polymers,which makes their dyeing a very difficult step that poses real technical *** order to overcome this concern,it is intended in this paper to modify acrylic fibers by different methods namely cationisation using the Crosscolor DRT then amidoximation using hydroxylamine hydrochloride and ammonium *** resulted samples were dyed then with the bio-colorant extracted from grape *** effect of the pretreatment on fibers fine structure using X-ray diffraction and the scanning electron microscope(SEM)images and its correlation with the colour strength of the dyed fabrics was *** dyeing parameters,such as dye bath pH and temperature on the performances of this dyeing process were *** dyeing qualities and new shades varying from brown to grey and dark green have been obtained following process optimization,mordanting and modification of acrylic fibers by the technique of cationisation.

关键词： Modified acrylic fibers grape marc bio-colorant mordant.

Water loss in Mafraq Governorate, Jordan

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Natural Science 2013年第3期5卷 333-340页

作者： Nadhir al-Ansari Salem al-Oun wafa Hadad Sven Knutsson Department of Business Administration Al Al-Bayt University Mafraq Jordan Department of Civil Environmental and Natural Resources Engineering Lulea University of Technology Lulea Sweden

Jordan is located in theMiddle Eastand covers an area of89,342 km2. The total population ofJordanis 6,508,*** rapidly facing a severe water supply crisis due to greater demands on a finite quantity of available water. If current trends continue, it has been estimated that the country will experience a chronic water shortage by 2020. Despite these shortages, water loss in the distribution network is relatively high where it reaches 46%. Mafraq Governorate has the maximum water loss. Continuous records and data for the period 1999-2004 for Mafraq water authority were investigated for the water supply and lose. Water losses were evaluated, and suggestions were given to minimize the loss.

关键词： Mafraq Water Loss Jordan Administrative Loss Technical Loss

Model Identification and Control of Evapotranspiration for Irrigation Water Optimization

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Computers, Materials & Continua 2022年第1期70卷 1749-1767页

作者： wafa Difallah Fateh Bounaama Belkacem Draoui Khelifa Benahmed Abdelkader Laaboudi Department of Exact Sciences Normal Higher School of Bechar08000Algeria Laboratory of Energetic in Arid Zones Faculty of TechnologyTahri Mohammed University of Bechar08000Algeria Department of Mathematics and Computer Science Faculty of Exact SciencesTahri Mohammed University of Bechar08000Algeria algerian Institute for Research in Agronomy Experimental Station of Adrar01000Algeria

Water conservation starts from rationalizing irrigation,as it is the largest consumer of this vital *** the critical and urgent nature of this issue,several works have been *** idea of most researchers is to develop irrigation management systems tomeet the water needs of plants with optimal use of this *** fact,irrigation water requirement is only the amount of water that must be applied to compensate the evapotranspiration ***-Monteith equation is the most common formula to evaluate reference evapotranspiration,but it requiresmany factors that cannot be available in many *** leads to a trend towards behavior model *** identification with control is one of the most promising applications in this *** idea behind this proposal depends on three stages:First,the estimation of reference evapotranspiration(ET0)by a linear ARX model,where temperature,relative humidity,insolation duration and wind speed are used as inputs,and ET0 estimated by Penman-Monteith equation as *** results show that the values estimated by thismethodwere in good agreement with the measured *** second part of this paper is tomanage the quantity of *** this purpose,two controllers are used for testing,lead-lag and *** adjust the first controller and optimize the choice of its parameters,Nelder-Mead algorithm is *** the last part,a comparative study is done between the two used controllers.

关键词： Evapotranspiration water identification optimization irrigation control

Numerical Solutions for Quadratic Integro-Differential Equations of Fractional Orders

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Open Journal of Applied Sciences 2017年第4期7卷 157-170页

作者： Fatheah alhendi wafa Shammakh Hind al-Badrani Department of Mathematics King Abdulaziz University Jeddah Saudi Arabia Taibah University Madinah Saudi Arabia

In this article, variational iteration method (VIM) and homotopy perturbation method (HPM) solve the nonlinear initial value problems of first-order fractional quadratic integro-differential equations (FQIDEs). We use the Caputo sense in this article to describe the fractional derivatives. The solutions of the problems are derived by infinite convergent series, and the results show that both methods are most convenient and effective.

关键词： Fractional Quadratic Integro-Differential Equations Variational Iteration Method Homotopy Perturbation Method

染色体异常致反复和后代5p12-15.3三体:一对叙利亚夫妇报道及文献复习（英文）

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中华男科学杂志 2015年第3期21卷 219-224页

作者： Walid al-ACHKAR Faten Moassass Ayman al-Ablog Thomas Liehr Xiaobo Fan Abdulsamad wafa Department of Molecular Biology and Biotechnology Human Genetics DivisionAtomic Energy Commission Jena University Hospital Institute of Human Genetics

在本研究中,我们介绍一叙利亚夫妻发生孕早期反复流产、胎儿畸形和/或新生儿死亡。经检查,父亲表型正常,有一个平衡的染色体易位t(5;15),在无精子症因子(AZF)b座位s Y125基因发生了微缺失而且其伴有MTHFRC677T纯合子基因多态性。值得注... 详细信息

在本研究中,我们介绍一叙利亚夫妻发生孕早期反复流产、胎儿畸形和/或新生儿死亡。经检查,父亲表型正常,有一个平衡的染色体易位t(5;15),在无精子症因子(AZF)b座位s Y125基因发生了微缺失而且其伴有MTHFRC677T纯合子基因多态性。值得注意的是,他的妻子则伴有MTHFRA1298C纯合子基因多态性。这对夫妻经历了两次流产,有2个夭折的孩子均为严重畸形,为5号染色体短臂部分三体。夫妻结婚10年后没有任何存活后代。

关键词：反复流产染色体异常胎儿畸形死胎 5p三体 Y染色体缺失荧光原位杂交亚甲基四氢叶酸还原酶

On the Uphill Domination Polynomial of Graphs

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Journal of Applied Mathematics and Physics 2020年第6期8卷 1168-1179页

作者： Thekra alsalomy Anwar Saleh Najat Muthana wafa al Shammakh Department of Mathematics Faculty of Science University of Jeddah Jeddah Saudi Arabia

A path π = [v1, v2, …, vk] in a graph G = (V, E) is an uphill path if deg(vi) ≤ deg(vi+1) for every 1 ≤ i ≤ k. A subset S ⊆ V(G) is an uphill dominating set if every vertex vi ∈ V(G) lies on an uphill path originating from some vertex in S. The uphill domination number of G is denoted by γup(G) and is the minimum cardinality of the uphill dominating set of G. In this paper, we introduce the uphill domination polynomial of a graph G. The uphill domination polynomial of a graph G of n vertices is the polynomial alt="" />, where up(G, i) is the number of uphill dominating sets of size i in G, and γup(G) is the uphill domination number of G, we compute the uphill domination polynomial and its roots for some families of standard graphs. also, UP(G, x) for some graph operations is obtained.

关键词： Domination Uphill Domination Uphill Domination Polynomial