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Evaluating mechanism of banana pseudo-stem retting using seawater:A cost-effective surface pre-treatment approach

Journal of Bioresources and Bioproducts 2024年第3期9卷 322-335页

作者： Prince Hotor Ahmed H.hassanin Osbert Akatwijuka Mohamed A.H.Gepreel Mitsuo Yamamoto Yukie Saito Ahmed Abdel-Mawgood Egypt-Japan University of Science and Technology Biotechnology ProgramAlexandria GovernorateNew Borg Al Arab 21934Egypt Alexandria University Department of Textile EngineeringAlexandria GovernorateBab Sharqi 5424041Egypt Egypt-Japan University of Science and Technology Material Science and EngineeringAlexandria GovernorateNew Borg Al Arab 21934Egypt Graduate School of Agricultural and Life Sciences The University of TokyoBunkyo-KuTokyo 113-8657Japan

Retting has been employed to extract natural fibers from agricultural wastes as a biological and cost-effective approach for *** its global abundance,banana pseudo-stem is a promising agro-waste for lignocellulosic fiber *** this study,fibers were extracted from the pseudo-stems after being pre-treated under four conditions using seawater at room temperature for up to 35 d Bacterial isolation from the fresh seawater sample and screening for ligninolytic ability were *** load as well as laccase and manganese peroxidase enzyme activity profile assay during the retting duration were *** transform infrared(FT-IR)and X-day diffraction(XRD)analyses were also examined for both pre-treated and untreated extracted *** results shows that six out of the eight bacterial isolates had the ability to degrade *** treatments(Raw stem+Raw seawater)and(Autoclaved stem+Raw seawater)recorded the highest viable bacterial load of 9.24×102 and 4.46×102 CFU,respectively,on the 14th day of the retting ***,the highest laccase and manganese peroxidase enzymes activity was recorded for(Raw stem+Raw seawater)and(Autoclaved stem+Raw seawater)treatments in the second to the third *** FT-IR spectra of the pre-treated fibers revealed relative reductions in peaks attributed to polysaccharides and other amorphous substances for all retting *** XRD diffractogram revealed that the crystallinity index(CI)of pre-treated fibers increased in all seawater retting treatment ***,the CI for fibers pre-treated under enzymatic conditions were enhanced even after five *** analysis for selected bacterial isolates showed homology to sequences of Bacillus velezensis,Shewanella sp.L8–5,and Citrobacter amalonaticus and Bacillus subtilis j8 *** these findings,it was suggested that physical,biological,and chemical actions were collectively involved in the seawater retting process of banana ps

关键词： Seawater retting Banana pseudo-stem Natural fiber Enzyme activity Colony forming unit

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Porosity,cracks,and mechanical properties of additively manufactured tooling alloys:a review

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Advances in Manufacturing 2022年第2期10卷 175-204页

作者： Prveen Bidare amaia Jimenez Hany hassanin Khamis Essa School of Mechanical Engineering University of BirminghamBirminghamUK TECNUN Escuela de Ingenieria Universidad de NavarraManuel de Lardizabal 15San Sebastian20018Spain School of Engineering Technologyand DesignCanterbury Christ Church UniversityCanterbury CT11QUUK

Additive manufacturing(am)technologies are currently employed for the manufacturing of completely functional parts and have gained the attention of hightechnology industries such as the aerospace,automotive,and biomedical *** is mainly due to their advantages in terms of low material waste and high productivity,particularly owing to the flexibility in the geometries that can be *** the tooling industry,specifically the manufacturing of dies and molds,am technologies enable the generation of complex shapes,internal cooling channels,the repair of damaged dies and molds,and an improved performance of dies and molds employing ***,a reviewof am processes and materials applied in the tooling industry for the generation of dies and molds is *** technologies used for tooling applications and the characteristics of the materials employed in this industry are first *** addition,the most relevant state-of-the-art approaches are analyzed with respect to the process parameters and microstructural and mechanical properties in the processing of high-performance tooling materials used in am ***,studies on the am of ferrous(maraging steels and H13 steel alloy)and non-ferrous(stellite alloys and WC alloys)tooling alloys are also analyzed.

关键词： Additive manufacturing(am) Tooling alloys Super alloys Hybrid manufacturing Post processing

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Quranic Script Optical Text Recognition Using Deep Learning in IoT Systems

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Computers, Materials & Continua 2021年第8期68卷 1847-1858页

作者： Mahmoud Badry Mohammed hassanin Asghar Chandio Nour Moustafa School of Engineering and Information Technology UNSW Canberra.ACTNewcastle NSW2620Australia Faculty of Computers and Information Fayoum UniversityFayoumEgypt Quaid-e-Awam University of Engineering Science and TechnologyNawabshahPakistan

Since the worldwide spread of internet-connected devices and rapid advances made in Internet of Things(IoT)systems,much research has been done in using machine learning methods to recognize IoT sensors *** is particularly the case for optical character recognition of handwritten *** text in images has several useful applications,including content-based image retrieval,searching and document *** Arabic language is one of the mostly used tongues in the ***,Arabic text recognition in imagery is still very much in the nascent stage,especially handwritten *** is mainly due to the language complexities,different writing styles,variations in the shape of characters,diacritics,and connected nature of Arabic *** this paper,two deep learning models were *** first model was based on a sequence-to-sequence recognition,while the second model was based on a fully convolution *** measure the performance of these models,a new dataset,called QTID(Quran Text Image Dataset)was *** is the first Arabic dataset that includes Arabic *** consists of 309,720 different 192×64 annotated Arabic word images,which comprise 2,494,428 characters in total taken from the Holy *** annotated images in the dataset were randomly divided into 90%,5%,and 5%sets for training,validation,and testing purposes,*** models were set up to recognize the Arabic Othmani font in the *** results show that the proposed methods achieve state-of-the-art ***,the proposed models surpass expectations in terms of character recognition rate,F1-score,average precision,and recall *** are superior to the best Arabic text recognition engines like Tesseract and ABBYY FineReader.

关键词： OCR quranic script IoT deep learning

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Albumin-based nanoparticles: a promising strategy to overcome cancer drug resistance

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Cancer Drug Resistance 2020年第4期3卷 930-946页

作者： is.am hassanin Ahmed Elzoghby Department of Biotechnology Institute of Graduate studies and ResearchAlexandria UniversityAlexandria 21526Egypt Cancer Nanotechnology Research Laboratory(CNRL) Faculty of PharmacyAlexandria UniversityAlexandria 21521Egypt Department of Industrial Pharmacy Faculty of PharmacyAlexandria UniversityAlexandria 21521Egypt

Circumvention of cancer drug resistance is one of the major investigations in *** this regard,nanotechnology-based drug delivery has offered various ***,protein-based nanocarriers have been a versatile choice compared to other nanomaterials,provided by their favorable characteristics and safety ***,albumin-based nanoparticles have been demonstrated to be an effective drug delivery system,owing to the inherent targeting modalities of albumin,through gp60-and SPARC-mediated receptor ***,surface functionalization was exploited for active targeting,due to albumin’s abundance of carboxylic and amino ***-responsive drug release has also been pertained to albumin ***,albumin-based nanocarriers could potentially overcome cancer drug resistance through bypassing drug efflux,enhancing drug uptake,and improving tumor ***,albumin nanocarriers improve the stability of various therapeutic cargos,for instance,nucleic acids,which allows their systemic *** review highlights the recent applications of albumin nanoparticles to overcome cancer drug resistance,the nano-fabrication techniques,as well as future perspectives and challenges.

关键词： Albumin active targeting cancer therapy drug delivery multi-drug resistance nanoparticles stimuliresponse release nucleic acid therapy

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Speak-Correct: A Computerized Interface for the Analysis of Mispronounced Errors

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Computer Systems Science & Engineering 2022年第12期43卷 1155-1173页

作者： Kamal Jambi hassanin Al-Barhamtoshy Wajdi Al-Jedaibi Mohsen Rashwan Sherif Abdou Faculty of Computing&Information Technology King Abdulaziz UniversitySaudi Arabia Faculty of Engineering Cairo UniversityEgypt Faculty of Computers Cairo UniversityEgypt

Any natural language may have dozens of *** though the equivalent phonemic formation of the word,if it is properly called in different accents,humans do have audio signals that are distinct from one *** the most common issues with speech,the processing is discrepancies in pronunciation,accent,and *** research study examines the issues of detecting,fixing,and summarising accent defects of average Arabic individuals in English-speaking *** article then discusses the key approaches and structure that will be utilized to address both accent flaws and pronunciation *** proposed SpeakCorrect computerized interface employs a cuttingedge speech recognition system and analyses pronunciation errors with a speech *** a result,some of the most essential types of changes in pronunciation that are significant for speech recognition are performed,and accent defects defining such differences are ***,the suggested technique increases the Speaker’s *** uses 100 h of phonetically prepared individuals to construct a pronunciation instruction *** prerecorded sets are used to train Hidden Markov Models(HMM)as well as weighted graph *** speeches are quite clear and might be considered *** proposed interface is optimized for use with an integrated phonetic pronounced dataset,as well as for analyzing and identifying speech faults in Saudi and Egyptian *** proposed interface detects,analyses,and assists English learners in correcting utterance faults,overcoming problems,and improving their pronunciations.

关键词： Speech recognition computerized interface arabic dialects accent defects acoustic error

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Micro-fabrication of ceramics:Additive manufacturing and conventional technologies

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Journal of Advanced Ceramics 2021年第1期10卷 1-27页

作者： Hany hassanin Khamis ESSA amr ELSHAER Mohamed IMBABY Heba H.EL-MONGY Tamer A.EL-SAYED School of Engineering Canterbury Christ Church UniversityCanterburyCT11QUUK University of Birmingham EdgbastonB152TTUK Kingston University London Penrhyn RoadKingston Upon ThamesSurreyKT12EEUK Department of Mechanical Design Faculty of EngineeringMatariaHelwan UniversityP.O.Box.11718CairoEgypt Jubail University College Mechanical EngineeringKingdom of Saudi Arabia Center for Applied Dynamics Research(CADR) School of EngineeringUniversity of AberdeenAberdeenAB243UEUK

Ceramic materials are increasingly used in micro-electro-mechanical systems(MEMS)as they offer many advantages such as high-temperature resistance,high wear resistance,low density,and favourable mechanical and chemical properties at elevated ***,with the emerging of additive manufacturing,the use of ceramics for functional and structural MEMS raises new opportunities and *** paper provides an extensive review of the manufacturing processes used for ceramic-based MEMS,including additive and conventional manufacturing *** review covers the micro-fabrication techniques of ceramics with the focus on their operating principles,main features,and processed *** that need to be addressed in applying additive technologies in MEMS include ceramic printing on wafers,post-processing at the micro-level,resolution,and quality *** paper also sheds light on the new possibilities of ceramic additive micro-fabrication and their potential applications,which indicates a promising future.

关键词： micro-electro-mechanical system(MEMS) micro-fabrication ceramics micro parts additive manufacturing

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Genetic and epigenetic control on clock genes in multiple sclerosis

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Journal of Genetics and Genomics 2022年第1期49卷 74-76页

作者： Tarek K.Motawi Olfat G.Shaker Soha O.hassanin Shaymaa G.Ibrahim Mahmoud A.Senousy Biochemistry Department Faculty of PharmacyCairo UniversityCairoEgypt Medical Biochemistry and Molecular Biology Department Faculty of MedicineCairo UniversityCairoEgypt Biochemistry Department Faculty of PharmacyModern University for Technology and Information(MTI)CairoEgypt

The study of circadian rhythm performance is prominent in chronic diseases, such as multiple sclerosis(MS). Circadian rhythm dysregulation has been observed in several neurodegenerative disorders, including MS, Alzheimer’s disease, Parkinson’s disease, and Huntington’s disease(Videnovic et al., 2014;Hedstr om et al.,2015). In addition, subjects who work in shifts have an increased risk of developing MS(Hedstr om et al., 2015). Furthermore, impaired sleep and alertness are common symptoms of MS and neurodegenerative disorders(Videnovic et al., 2014).

关键词： Huntington impaired

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Factors Influencing the Morphological Characteristics of Village Chickens’ Genetic Resources in the Abu-Dhabi Emirate, UAE

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Open Journal of Animal Sciences 2018年第1期8卷 87-103页

作者： Mohammad J. Tabbaa Hussein H. hassanin RandD Abu-Dhabi Food Control Authority Abu-Dhabi UAE Department of Animal Production School of Agriculture The University of Jordan Amman Jordan Animal Production Abu-Dhabi Food Control Authority Abu-Dhabi UAE

The study was accomplished to identify the characteristics of village chickens’ (VCs) genetic resources in the Abu-Dhabi Emirate of United Arab Emirate (UAE) and to study factors affecting these characteristics. Each bird was individually observed, identified, measured and characterized of thirteen VCs pure breeds and crossbreds. The overall VCs had normal feather morphology (95.1%) and distribution (77%). Except for Fayomi chickens which were 100% mottled, no specific plumage pattern was found. Almost 52% of the VCs had white skins. Six different colors were reported for the shanks and maximized for white shanks (34.3%). Large breasts (46%) were more available. The predominant plumage color was mixed colors (37.5%). Face size tended to be small (42.8%) to medium (40.4%). More brown (48.9%) then orange (27.3%) eyes were found. Dark (49.7%) beaks were more available than white (28.6%) or yellow (21.7%) beaks. The distribution of wattle colors was similar to that of ear-lob colors with some variation. Small wattles (41.9%) were most available. Single comb (82.4%) is the most available;11 other types and one with no comb were represented with low frequencies. In the whole sample, red and white combs (56.7%) were the most available;however, plain red (23.8%) and red and black (15.5%) were represented. Results of factors influence showed that body weight was high significantly (P among breeds. This study reported the morphological characteristics of the different VCs breeds kept in Abu-

关键词： Body Weight Breeds Morphological Characteristics UAE Village Chickens

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Solution of MHD Flow past a Vertical Porous Plate through a Porous Medium under Oscillatory Suction

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Applied Mathematics 2013年第4期4卷 694-702页

作者： Ashraf A. Moniem W. S. hassanin Akhbar El-Yom Academy University College in Al-Jamoum Umm Al-Qura University Giza Egypt

The model of mass transfer on free convective flow of a viscous incompressible electrically conducting fluid past vertically porous plate through a porous medium with time dependant permeability and oscillatory suction in presence of a transverse magnetic field is considered. Perturbation technique is obtained the solution for velocity field and concentration distribution analytically. The effects of the flow parameters on the velocity field and concentration distribution are presented with the aid of figures. Also, the skin friction and the rate of mass transfer are calculated with the aid of tables.

关键词： MHD Flow Mass Transfer Porosity Oscillation Suction

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埃及开罗大学中文系诗歌教学现状的调查与思考

埃及开罗大学中文系诗歌教学现状的调查与思考

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作者： MIRNA MOGAHED MAHROUS ABDOU hassanin 北京外国语大学

学位级别：硕士

本文以埃及开罗大学中文系中国诗歌教学为研究对象,主要研究2018、2019和2020年高级学生中国诗歌的习得情况,对中国诗歌课的课程设置、课程师资、课程教材以及教学法四个方面进行调查与思考。学生对课程目标了解程度还可以,但是老师和... 详细信息

本文以埃及开罗大学中文系中国诗歌教学为研究对象,主要研究2018、2019和2020年高级学生中国诗歌的习得情况,对中国诗歌课的课程设置、课程师资、课程教材以及教学法四个方面进行调查与思考。学生对课程目标了解程度还可以,但是老师和学生都认为诗歌课程未达到教学目标,主要原因是使用的诗歌教材不好。此外,很多学生还认为中国诗歌对他们的未来工作生活没有帮助,这都是学生对诗歌产生情绪的主要原因。为了解决这个问题,教师可以想出一些方法去激发学生的兴趣,也可以给学生列出涉及到中国诗歌的不同工作。关于师资,开罗大学中文系对上诗歌课的老师的国籍和专业没有具体的要求。而学生都认为中国诗歌课由埃及老师上更好,专业是文学最好,还认为中国老师上课是有困难的。目前埃及缺少关于中国诗歌的相关资料,这是开罗大学中文系负责老师无法选择合适教材的最大阻碍因素。笔者发现,不管是老师还是学生,都对诗歌教材完全不满意。现有教材不足的地方就在于:1、内容不全面,只包括现代诗。2、教材缺乏一些重要的部分,比如“生词解释”、“专业词语”、“专业知识”、“扩展阅读”、“讨论题”、“练习题”等部分。3、诗篇题材不是多样化。老师和学生总体上都认为教材不适合埃及学生学习。中国诗歌课的教学方法方面,大部分学生对使用过的“多媒体法”和“思维导图法”两种教学法满意,就是认为不够有趣味性。通过问卷调查,笔者发现埃及学生对“故事引入法”、“古诗今译法”、“汉阿翻译法”、“画图释词法”、“配乐诵读法”和“诗歌朗诵法”都很感兴趣。

关键词：中国诗歌开罗大学中国诗歌教学中国诗歌教材

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