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Epidemiological Pattern of Breast Diseases among Females in the South-Western Region, Saudi Arabia

International Journal of Clinical Medicine 2020年第5期11卷 257-269页

作者： Abdulrahman Manaa Alamri Saeed Ali Alsareii Hajr Al-Wadei Awad Mohammed Al-Qahtani Salem Ali Alatef Sultan Sara Ali Alshamrani ahmed hamzah almakrami Abdullah ahmed Daiel Ahlam Yahya Alyami Ashwaq Mousa Hommadi Yagoub Mohammed Tahir Ali Department of Surgery College of Medicine Najran University Najran KSA Department of Community Medicine Faculty of Medicine Najran University Najran KSA College of Medicine Najran University Najran KSA Department of General surgery King Khalid Hospital Najran KSA

Background: Breast diseases cover several conditions. The majority of breast diseases are noncancerous. Some of these lesions are clinically unremarkable, which needed minimal intervention. However, some symptoms may be of clinical value and attract the attention of both the patient and the attending physician, especially when they become persistent. The study aimed to assess the prevalence, pattern, types, and clinical profile of breast diseases among females in the South-western region, during the period from 2018-2020. Methods: A retrospective record-based descriptive approach was used through reviewing medical records of all cases with breast disease attended King Khalid Hospital during the period from January 2018 to January 2020. Data extracted throng pre-structured questionnaire. Results: The study included 211 cases whose ages ranged from 18 to 58 years old with a mean age of 28.9 ± 12.8 years. Breast mass was the most recorded complaint (95.1%) followed with breast pain (32%), skin changes. Benign findings based on the final pathology report were recorded for more than two thirds of the cases, with the most common finding were fibroadenoma. Excisional biopsy and modified radical mastectomy were the most reported surgical interventions. Conclusions: In conclusion, the study revealed that the majority of the cases had benign breast disease (BBD), where fibroadenoma was the most frequent.

关键词： Breast Disease Females Incidence Pattern Predictors Epidemiolo-gylesions Biopsy

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Characteristic properties of date-palm fibre/sheep wool reinforced polyester composites

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Journal of Bioresources and Bioproducts 2023年第4期8卷 430-443页

作者： Mohammed Y.Abdellah Mustafa Gamal Sadek hamzah Alharthi G.T.Abdel-Jaber ahmed H.Backar Mechanical Engineering Department Faculty of EngineeringSouth Valley UniversityQena83523Egypt Mechanical Engineering Department College of Engineering and Islamic ArchitectureUmm AL-Qura UniversityMakkah21955Saudi Arabia New Assiut Technological University(NAUT) Assiut71684Egypt Production Engineering Department Faculty of EngineeringAlexandria UniversityAlexandria21544Egypt

In this study,we attempted to characterise the effects of date-palm fibre(DPF)and a date-palm fibre/sheep wool hybrid in polyester to enhance high-performance and low-cost composite materials that can be used in insulation building systems,automotive parts,and home *** DPF was treated using 5%NaOH solution;and the sheep wool was cleaned with 50℃hot water and *** composite specimens were prepared with different fibre contents(0%,10%,20%,30%(w))using a compression moulding *** effect of fibre reinforcement was analysed in terms of the mechanical properties(tensile,flexural,impact,and hardness)and composite ***,scanning electron microscopy(SEM)was performed on the fibres before and after treatment,and the fractured surfaces of all composite specimens were examined after tensile *** results showed that the 20%DPF/sheep wool hybrid reinforced polyester produced the best *** ultimate tensile strength and modulus were 27 MPa and 3.69GPa,*** ultimate flexural strength and flexural modulus were 35.4 and 2507 MPa,*** impact strength was 39.5 kJ/m^(2)and the hardness was 64 *** density decreased to the lowest value of 1.02 g/cm^(3)with the 30%DPF/sheep wool *** SEM showed good adhesion and interfacial bonding between DPF/sheep wool hybrid fibres and the polyester matrix,particularly at 20%fibre content.

关键词： Date-palm fibre Polyester Compression moulding Mechanical property

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Resource Exhaustion Attack Detection Scheme for WLAN Using Artificial Neural Network

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Computers, Materials & Continua 2023年第3期74卷 5607-5623页

作者： Abdallah Elhigazi Abdallah Mosab Hamdan Shukor Abd Razak Fuad A.Ghalib Muzaffar hamzah Suleman Khan Siddiq ahmed Babikir Ali Mutaz H.H.Khairi Sayeed Salih Faculty of Engineering Future UniversityKhartoum 10553Sudan Faculty of Computing and Informatics Universiti Malaysia SabahKota Kinabalu88400Malaysia Information Assurance and Security Research School of ComputingUniversiti Teknologi MalaysiaJohor81310Malaysia School of Psychology and Computer Science University of Central LancashirePreston PR12HEUK Deaptement of Management Information Systems College of Administrative ScienceApplied Science UniversityAl Eker623Bahrain Deaptement of Information Technology College of Computer and Information SciencesKing Saud UniversityRiyadh11461Saudi Arabia

IEEE 802.11 Wi-Fi networks are prone to many denial of service(DoS)attacks due to vulnerabilities at the media access control(MAC)layer of the 802.11 *** to the data transmission nature of the wireless local area network(WLAN)through radio waves,its communication is exposed to the possibility of being attacked by illegitimate ***,the security design of the wireless structure is vulnerable to versatile *** example,the attacker can imitate genuine features,rendering classificationbased methods inaccurate in differentiating between real and false *** security standards have been proposed over the last decades to overcome many wireless network attacks,effectively detecting such attacks is crucial in today’s real-world *** paper presents a novel resource exhaustion attack detection scheme(READS)to detect resource exhaustion attacks *** proposed scheme can differentiate between the genuine and fake management frames in the early stages of the attack such that access points can effectively mitigate the consequences of the *** scheme is built through learning from clustered samples using artificial neural networks to identify the genuine and rogue resource exhaustion management frames effectively and efficiently in *** proposed scheme consists of four modules whichmake it capable to alleviates the attack impact more effectively than the related *** experimental results show the effectiveness of the proposed technique by gaining an 89.11%improvement compared to the existing works in terms of detection.

关键词： 802.11 media access control(MAC) wireless local area network(WLAN) artificial neural network denial-of-service(DoS)

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Mode-locked ytterbium-doped fiber laser with zinc phthalocyanine thin film saturable absorber

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Frontiers of Optoelectronics 2022年第2期15卷 181-190页

作者： Rawan S.M.Soboh ahmed H.H.Al-Masoodi Fuad N.A.Erman Abtisam H.H.Al-Masoodi Bilal Nizamani hamzah Arof Retna Apsari Sulaiman Wadi Harun Department of Electrical Engineering Faculty of EngineeringUniversity of Malaya50630Kuala LumpurMalaysia Electronic and Telecommunication Engineering Department College of EngineeringThe American University of KurdistanDuhok42001Iraq Department of Physics Faculty of ScienceUniversity of Malaya50603Kuala LumpurMalaysia Department of Physics Faculty of Science and TechnologyAirlangga University60115SurabayaIndonesia

A stable mode-locked laser was demonstrated using a newly developed zinc phthalocyanine(ZnPc)thin film as passive saturable absorber(SA)in ytterbium-doped fiber laser(YDFL).The ZnPc thin film was obtained using a casting method and then inserted between the two fiber ferrules of a YDFL ring cavity to generate mode-locked *** resulting pulsed laser operated at a wavelength of 1034.5 nm having a repetition rate of 3.3 *** pump power of 277 mW,the maximum output power and pulse energy are achieved at 4.92 mW and 1.36 nJ,*** has a high chemical and photochemical stability,and its significance for use as a potential SA in a mode-locked laser is reported in this work.

关键词： Mode-locking Ytterbium-doped fiber laser(YDFL) Saturable absorber(SA) Zinc phthalocyanine(ZnPc)thin film

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基于亚热带沙漠气候特征的巴格达居住区规划设计策略研究

基于亚热带沙漠气候特征的巴格达居住区规划设计策略研究

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作者： Abd Mohammed ahmed hamzah Abbas 北京交通大学

学位级别：硕士

随着城市人口的增加,气候变化已成为全球共同关注的问题。人类引起的大气成分变化是全球气候变化的主要原因。在地方和区域层面,城市化和土地利用的变化也发挥着重要作用。然而,与能源使用相关的排放占这些干扰的大部分。2017年美国气... 详细信息

随着城市人口的增加,气候变化已成为全球共同关注的问题。人类引起的大气成分变化是全球气候变化的主要原因。在地方和区域层面,城市化和土地利用的变化也发挥着重要作用。然而,与能源使用相关的排放占这些干扰的大部分。2017年美国气候科学报告指出,如果年排放量继续像2000年以来那样快速上升,模型预测到本世纪末,全球平均气温将至少上升5华氏度,甚至可能上升10.2度。根据模型预测,即使到2050年年排放量逐渐上升并开始急剧下降,气温仍将比20世纪上半叶至少高出2.4度,甚至可能高出5.9度。巴格达被认为是世界上最热的城市之一,伊拉克巴格达市的特点是亚热带沙漠气候,天气炎热,夏季炎热而漫长,一年长达七个月。巴格达的每日最高温度通常接近50°C。炎热的气候使人们通过人工降温系统来调节建筑物的室内温度,不仅增加了能源消耗,而且将热能传递到建筑物周围,导致室外环境变差,室外温度升高导致城市热岛现象的出现。此外,许多研究表明,中东炎热干燥城市(如巴格达)的大部分城市形态风格都是基于当代规划技术创建的。在不考虑炎热干燥地区恶劣的当地条件的情况下,这些传统是从普遍存在温带和凉爽气候的西方环境中继承下来的。本论文的研究对象是巴格达的城市环境和住宅建筑。该研究方法依靠描述性和分析性的方法来实现其目标并达到预期目标,首先,通过研究和分析来阐明巴格达的气候特征和城市气候的影响。其次,调查城市住区外部环境、室外空间的规划要素及其遇到的问题,如朝向、开洞、植被覆盖、绿化、保温材料的使用、个体的设计特点等、建筑,以及居住区生活质量的自我评估。最后,提出了能够降低热气候负面影响的改善设计策略,并提出适合该区域的技术措施,为城市居住区规划设计和建筑设计提供参考。

关键词：规划设计策略全球气候变化居住区亚热带气候特征

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Novel Universal Windowing Multicarrier Waveform for 5G Systems

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Computers, Materials & Continua 2021年第5期67卷 1523-1536页

作者： ahmed Hammoodi Lukman Audah Montadar Abas Taher Mazin Abed Mohammed Mustafa S.Aljumaily Adeeb Salh Shipun A.hamzah Wireless and Radio Science Centre Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn MalaysiaParit Raja86400Malaysia Department Communications Engineering University of DiyalaBaqubah32001Iraq College of Computer Science and Information Technology University of AnbarAnbar31001Iraq Department of Electrical Engineering and Computer Science University of TennesseeKnoxvilleTN37901USA

Fifth Generation(5G)systems aim to improve flexibility,coexistence and diverse service in several aspects to achieve the emerging applications *** and filtering of the traditional multicarrier waveforms are now considered common sense when designing more flexible *** paper proposed a Universal Windowing Multi-Carrier(UWMC)waveform design platform that is flexible,providing more easily coexists with different pulse shapes,and reduces the Out of Band Emissions(OOBE),which is generated by the traditional multicarrier methods that used in the previous generations of the mobile *** novel proposed approach is different from other approaches that have been proposed,and it is based on applying a novel modulation approach for the Quadrature-Amplitude Modulation(64-QAM)which is considered very popular in mobile *** new approach is done by employing flexible pulse shaping windowing,by assigning windows to various *** leads to decreased side-lobes,which are going to reduce OOBE and boost the spectral efficiency by assigning them to edge subscribers *** new subband windowing(UWMC)will also maintain comprehensively the non-orthogonality by a variety of windowing and make sure to keep window time the same for all *** addition,this paper shows that the new approach made the Bit Error Rate(BER)equal to the conventional Windowed-Orthogonal Frequency Division Multiplexing(W-OFDM).This platform achieved great improvement for some other Key Performance Indicators(KPI),such as the Peak to Average Power Ratio(PAPR)compared with the conventional(W-OFDM)and the conventional Universal Filtered Multicarrier(UFMC)*** particular,the proposed windowing scheme outperforms previous designs in terms of the Power Spectral Density(PSD)by 58%and the(BER)by 1.5 dB and reduces the Complementary Cumulative Distribution Function Cubic Metric(CCDF-CM)by 24%.

关键词： 5G waveform window-OFDM universal filtered multi-carrier key performance indicators

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Fuzzy Logic–Based Scheme for Load Balancing in Grid Services

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Journal of Software Engineering and Applications 2012年第12期5卷 149-156页

作者： Tarek Helmy Hamdi Al-Jamimi Bashar ahmed hamzah Loqman Information and Computer Science Department College of Computer Science and Engineering King Fahd University of Petroleum and Minerals Dhahran 31216 Mail Box 413 Saudi Arabia Information and Computer Science Department College of Computer Science and Engineering King Fahd University of Petroleum and Minerals Dhahran 31216 Mail Box 413 Saudi Arabia.

Load balancing is essential for efficient utilization of resources and enhancing the responsiveness of a computational grid, especially that hosts of services most frequently used, i.e. food, health and nutrition. Various techniques have been developed and applied;each has its own limitations due to the dynamic nature of the grid. Efficient load balancing can be achieved by an effective measure of the node’s/cluster’s utilization. In this paper, as a part of an NSTIP project # 10-INF1381-04 and in order to assess of FAQIH framework ability to support the load balance in a computational grid that hosts of food, health and nutrition inquire services. We detail the design and implementation of a proposed fuzzy-logic-based scheme for dynamic load balancing in grid computing services. The proposed scheme works by using a fuzzy logic inference system which uses some metrics to capture the variability of loads and specifies the state of each node per a cluster. Then, based on the overall nodes’ states, the state of the corresponding cluster will be defined in order to assign the newly arrived inquires such that load balancing among different clusters and nodes is accomplished. Many experiments are conducted to investigate the effectiveness of the proposed fuzzy-logic-based scheme to support the load balance where the results show that the proposed scheme achieves really satisfactory and consistently load balance than of other randomize approaches in grid computing services.

关键词： Fuzzy Logic Load Balancing Grid Computing

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Application of ferrous sulfate alleviates negative impact of cadmium in rice(Oryza sativa L.)

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BIOCELL 2021年第6期45卷 1631-1649页

作者： JAVARIA AFZAL XIUKANG WANG MUHAMMAD hamzah SALEEM XUECHENG SUN SHAHID HUSSAIN IMRAN KHAN MUHAMMAD SHOAIB RANA SHAKEEL ahmed SAMRAH AFZAL AWAN SAJID FIAZ OMAR AZIZ KASHIF ALI KUBAR SHAFAQAT ALI CHENGXIAO HU Key Laboratory of Arable Land Conservation(Middle and Lower Reaches of Yangtze River) Ministry of Agriculture and Rural AffairsHuazhong Agricultural UniversityWuhan430070China Department of Soil Science Sindh Agriculture UniversityTandojam70060Pakistan College of Life Sciences Yan’an UniversityYan’an716000China College of Plant Science and Technology Huazhong Agricultural UniversityWuhan430070China Schools of Materials Science and Engineering Jiangsu UniversityZhenjiang212013China Department of Grassland Science Sichuan Agricultural UniversityChengdu611130China Instituto de Farmacia Facultad de CienciasUniversidad Austral de ChileValdivia5110566Chile Department of Plant Breeding and Genetics The University of HaripurKhyber Pakhtunkhwa22620Pakistan Department of Soil&Environmental Sciences University of Agriculture FaisalabadSub-Campus DepalpurOkaraPakistan Faculty of Agriculture Lasbela University of AgricultureWater and Marine SciencesUthal90150Pakistan Department of Environmental Sciences and Engineering Government College UniversityFaisalabad38000Pakistan Department of Biological Sciences and Technology China Medical UniversityTaichung40402Taiwan

Soil contamination with toxic heavy metals[such as cadmium(Cd)]is becoming a serious global problem due to rapid development of social ***(Fe),being an important element,has been found effective in enhancing plant tolerance against biotic and abiotic *** present study investigated the extent to which different levels of Ferrous sulphate(FeSO_(4))modulated the Cd tolerance of rice(Oryza sativa L.),when maintained in artificially Cd spiked regimes.A pot experiment was conducted under controlled conditions for 146 days,by using natural soil,mixed with different levels of CdCl_(2)[0(no Cd),0.5 and 1 mg/kg]together with the exogenous application of FeSO_(4) at[0(no Fe),1.5 and 3 mg/kg]levels to monitor different growth,gaseous exchange characteristics,oxidative stress,antioxidative responses,minerals accumulation,organic acid exudation patterns of *** results depicted that addition of Cd to the soil significantly(P<0.05)decreased plant growth and biomass,gaseous exchange parameters,mineral uptake by the plants,sugars(soluble,reducing,and non-reducing sugar)and altered the ultrastructure of chloroplasts,plastoglobuli,mitochondria,and many other cellular organelles in Cd-stressed *** compared to those plants which were grown without the addition of Cd in the ***,Cd toxicity boosted the production of reactive oxygen species(ROS)by increasing the contents of malondialdehyde(MDA),which is the indication of oxidative stress in *** and was also manifested by hydrogen peroxide(H_(2)O_(2))contents and electrolyte leakage to the membrane bounded ***,activities of various antioxidative enzymes like superoxidase dismutase(SOD),peroxidase(POD),catalase(CAT)and ascorbate peroxidase(APX)and non-enzymatic antioxidants like phenolics,flavonoid,ascorbic acid,anthocyanin and proline contents increased up to a Cd level of 0.5 mg/kg in the soil but were significantly diminished at the highest Cd level of 1 mg/kg in the soil compar

关键词： Antioxidants Defense mechanism Heavy metals Iron Organic acids exudation

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