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3D printing of PEEK–cHAp scaffold formedical bone implant

Bio-Design and Manufacturing 2021年第1期4卷 44-59页

作者： Bankole I.oladapo SAbolfazl Zahedi sikiru o.ismail Francis T.omigbodun oluwole K.Bowoto Mattew A.olawumi Musa A.Muhammad School of Engineering and Sustainable Development De Montfort UniversityLeicesterUK Centre for Engineering Research School of PhysicsEngineering and Computer ScienceUniversity of HertfordshireHatfieldUK Mechanical Engineering Loughborough UniversityLoughboroughUK Faculty of Engineering Computing and mediaDe Montfort UniversityLeicesterUK Faculty of Engineering Environment and ComputingCoventry UniversityCoventryUK

The major drawback associated with PEEK implants is their biologically inert surface,which caused unsatisfactory cellular response and poor adhesion between the implants and surrounding soft tissues against proper bone *** this study,polyetheretherketone(PEEK)was incorporated with calcium hydroxyapatite(cHAp)to fabricate a PEEK-cHAp biocomposite,using the fused deposition modeling(FDM)method and a surface treatment strategy to create microporous architectures onto the filaments of PEEK lattice ***,nanostructure and morphological tests of the PEEK-cHAp biocomposite were modeled and analyzed on the FDM-printed PEEK-cHAp biocomposite sample to evaluate its mechanical and thermal strengths as well as in vitro cytotoxicity via a scanning electron microscope(SEM).A technique was used innovatively to create and investigate the porous nanostructure of the PEEK with controlled pore size and distribution to promote cell penetration and biological integration of the PEEK-cHAp into the *** vivo tests demonstrated that the surface-treated micropores facilitated the adhesion of newly regenerated soft tissues to form tight implant-tissue interfacial bonding between the cHAp and *** results of the cell culture depicted that PEEK-cHAp exhibited better cell proliferation attachment spreading and higher alkaline phosphatase activity than PEEK *** islands formed on the PEEK-cHAp composite after immersion in simulated body fluid of Dulbecco’s modified Eagle medium(DMEM)for 14 days and grew continuously with more or extended *** microstructure treatment of the crystallinity of PEEK was comparatively and significantly different from the PEEK-cHAp sample,indicating a better treatment of *** in vitro results obtained from the PEEK-cHAp biocomposite material showed its biodegradability and performance suitability for bone *** study has potential applications in the field of biomedical engineering to strengthen the conceptual kn

关键词： 3D printing PEEK-cHAp biocomposite Nanostructure Bone implant Composite morphing

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Shear Let Transform Residual Learning Approach for Single-Image Super-Resolution

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Computers, Materials & Continua 2024年第5期79卷 3193-3209页

作者： Israa ismail Ghada Eltaweel Mohamed Meselhy Eltoukhy Department of Computer Science Faculty of Computers and InformaticsSuez Canal UniversityIsmailia51422Egypt Department of Information Technology College of Computing and Information Technology at KhulaisUniversity of JeddahJeddahSaudi Arabia

Super-resolution techniques are employed to enhance image resolution by reconstructing high-resolution images from one or more low-resolution ***-resolution is of paramount importance in the context of remote sensing,satellite,aerial,security and surveillance ***-resolution remote sensing imagery is essential for surveillance and security purposes,enabling authorities to monitor remote or sensitive areas with greater *** study introduces a single-image super-resolution approach for remote sensing images,utilizing deep shearlet residual learning in the shearlet transform domain,and incorporating the Enhanced Deep Super-Resolution network(EDSR).Unlike conventional approaches that estimate residuals between high and low-resolution images,the proposed approach calculates the shearlet coefficients for the desired high-resolution image using the provided low-resolution image instead of estimating a residual image between the high-and low-resolution *** shearlet transform is chosen for its excellent sparse approximation ***,remote sensing images are transformed into the shearlet domain,which divides the input image into low and high *** shearlet coefficients are fed into the EDSR *** high-resolution image is subsequently reconstructed using the inverse shearlet *** incorporation of the EDSR network enhances training stability,leading to improved generated *** experimental results from the Deep Shearlet Residual Learning approach demonstrate its superior performance in remote sensing image recovery,effectively restoring both global topology and local edge detail information,thereby enhancing image *** to other networks,our proposed approach outperforms the state-of-the-art in terms of image quality,achieving an average peak signal-to-noise ratio of 35 and a structural similarity index measure of approximately 0.9.

关键词： Super-resolution shearlet transform shearlet coefficients enhanced deep super-resolution network

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Effect of Co on Solidification Characteristics and Microstructural Transformation of Non-equilibrium Solidified Cu-Ni Alloys

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Journal of Wuhan University of Technology(Materials Science) 2024年第2期39卷 444-453页

作者：安红恩 Bih-Lii Chua ismail Saad Willey Yun Hsien Liew Materials Engineering Research Group Faculty of EngineeringUniversity Malaysia Sabah88400 Kota KinabaluSabahMalaysia College of Mechanical and Electronic Engineering Huanghe Jiaotong UniversityJiaozuo 454950China Henan Engineering Technology Research Center on Intelligent Manufacturing Technology and Equipment Jiaozuo 454950China Centre of Research in Energy and Advanced Materials Faculty of EngineeringUniversiti Malaysia SabahJalan UMS88400 Kota KinabaluSabahMalaysia Nano Engineering and Materials Research group Faculty of EngineeringUniversity Malaysia Sabah88400 Kota KinabaluSabahMalaysia

Non-equilibrium solidification structures of Cu55Ni45 and Cu55Ni43Co2 alloys were prepared by the molten glass purification cycle superheating *** variation of the recalescence phenomenon with the degree of undercooling in the rapid solidification process was investigated using an infrared *** addition of the Co element affected the evolution of the recalescence phenomenon in Cu-Ni *** images of the solid-liquid interface migration during the rapid solidification of supercooled melts were captured by using a high-speed *** solidification rate of Cu-Ni alloys,with the addition of Co elements,was ***,the grain refinement structure with low supercooling was characterised using electron backscatter diffraction(EBSD).The effect of Co on the microstructural evolution during nonequilibrium solidification of Cu-Ni alloys under conditions of small supercooling is investigated by comparing the microstructures of Cu55Ni45 and Cu55Ni43Co2 *** experimental results show that the addition of a small amount of Co weakens the recalescence behaviour of the Cu55Ni45 alloy and significantly reduces the thermal strain in the rapid solidification *** the rapid solidification phase,the thermal strain is greatly reduced,and there is a significant increase in the characteristic undercooling ***,the addition of Co and the reduction of Cu not only result in a lower solidification rate of the alloy,but also contribute to the homogenisation of the grain size.

关键词： non-equilibrium solidification recalescence effect solidification character microstructure

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Targeting oral-gut microbial transmission in diabetic coronary heart disease: unveiling key pathogenic mechanisms

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Science China Life Sciences 2024年

作者： ismail Cimen Aab Cardiovascular Research Institute Department of Medicine University of Rochester School of Medicine and Dentistry

Diabetes significantly exacerbates the occurrence and adverse prognosis of coronary heart disease (CHD), emphasizing the importance of focusing on the prevention and management of diabetesrelated complications. This study identifies and verifies for the first time a distinctive oral-gut microbiota profile in patients with diabetic coronary heart disease (DCHD), marked by an increased abundance of oral Fusobacterium nucleatum and gut Lactobacillus.

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Assembly of functional carboxymethyl cellulose/polyethylene oxide/anatase Tio_(2) nanocomposites and tuning the dielectric relaxation, optical, and photoluminescence performances

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Journal of Semiconductors 2024年第7期45卷 26-38页

作者： Asmaa M.ismail Abeer A.Reffaee Fawzy G.El Desouky Spectroscopy Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt Microwave Physics and Dielectrics Department National Research CentreDokkiCairoEgypt Solid State Physics Department Physics Research InstituteNational Research CentreGizaCairo 12622Egypt

Nanocomposite films consisting of carboxymethyl cellulose,polyethylene oxide(CMC/PEo),and anatase titanium diox-ide(To)were produced by the use of sol-gel and solution casting ***2 nanocrystals were effectively incorporated into CMC/PEo polymers,as shown by X-ray diffraction(XRD)and attenuated total reflectance fourier transform infrared(ATR-FTIR)*** roughness growth is at high levels of To nanocrystals(To NCs),which means increasing active sites and defects in CMC/*** differential scanning calorimetry(DSC)thermograms,the change in glass transition temperature(Tg)val-ues verifies that the polymer blend interacts with To *** increment proportions of To NCs have a notable impact on the dielectric performances of the nanocomposites,as *** electrical properties of the CMC/PEo/To nanocomposite undergo significant *** nanocomposite films exhibit a red alteration in the absorption edge as the concentration of To NCs increases in the polymer *** decline in the energy gap is readily apparent as the weight percentage of To NCs *** photoluminescence(PL)emission spectra indicate that the sites of the luminescence peak maximums show slight variation;peaks get wider,while their intensities decrease dramatically as the concentration of To *** nanocomposite materials show potential for multifunctional applications including optoelectronics,antireflection coatings,pho-tocatalysis,light emitting diodes,and solid polymer electrolytes.

关键词： anatase Tio_(2) CMC/PEo nanocomposites optical photoluminescent electrical optoelectronics

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High resolution sequence stratigraphy of the Mishrif Formation(Cenomanian-Early Turonian)at zubair oilfield(al-rafdhiah dome),southern Iraq

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Petroleum Research 2024年第1期9卷 61-71页

作者： Aymen A.Lazim Maher J.ismail Maher M.Mahdi Geoscience Department Zubair Field Operation DivisionBasra Oil CompanyIraq Basrah oil Company WQ1 FODBasrahIraq University of Basrah College of ScienceGeology Dept.BasrahIraq

The Mishrif Formation(Cenomanian-E Turonian)is one of the most important geological formations in the Middle East and Iraq because it contains enormous petroleum *** is considered to be the first reservoir in the region,and is still being studied because of its economic *** carbonate of the Mishrif Formation derives from a variety of depositional settings,including mid-ramp,shoal,lagoon,and *** five main microfacies discussed in this paper are wackestone,packstone,grainstone,floatstone,and *** most frequent fossilised components found in the Mishrif Formation are rudists,benthic foraminifera,echinoderms,burrows molluscs,and *** to the microfacies and analysed wireline log data,the sequence stratigraphy of the studied formation is composed of two regression *** parasequences of transgressive-regressive cycles make up the depositional sequence of the Mishrif *** standard depositional environments seem to demonstrate a gradual regression,beginning with a short period of the outer ramp,then a steady period of the mid-ramp,and ending in the intertidal ***,the study recorded two regional maximum flooding surfaces:K-135 and *** former is present in the lowermost part of the formation,while the other lies in the *** study shows a close relationship between facies(environments)and hydrocarbon *** increased accumulation focuses on the lower part of the studied formation,and seems to be lower in the upper part of the formation as a result of changes in the environment of deposition.

关键词： Mishrif formation Cenomanian Sequence stratigraphy Zubair oilfield Iraq

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A Novel Deep Learning-Based Model for Classification of Wheat Gene Expression

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Computer Systems Science & Engineering 2024年第2期48卷 273-285页

作者： Amr ismail WalidHamdy Aya MAl-Zoghby Wael AAwad Ahmed ismail Ebada Yunyoung Nam Byeong-Gwon Kang Mohamed Abouhawwash Faculty of Science Port Said UniversityPort SaidEgypt Modern Academy for Computer Science and Management Technology Cairo11742Egypt Faculty of Computers and Artificial Intelligence Damietta UniversityNew DamiettaEgypt Department of ICT Convergence Soonchunhyang UniversityAsan31538South Korea Department of Mathematics Faculty of ScienceMansoura UniversityMansoura35516Egypt Department of Computational Mathematics Scienceand Engineering(CMSE)Michigan State UniversityEast LansingMI48824USA

Deep learning(DL)plays a critical role in processing and converting data into knowledge and *** technologies have been applied in a variety of applications,including image,video,and genome sequence *** deep learning the most widely utilized architecture is Convolutional Neural Networks(CNN)are taught discriminatory traits in a supervised *** comparison to other classic neural networks,CNN makes use of a limited number of artificial neurons,therefore it is ideal for the recognition and processing of wheat gene *** is an essential crop of cereals for people around the *** Genotypes identification has an impact on the possible development of many countries in the agricultural *** quantitative genetics prediction of genetic values is a central *** is an allohexaploid(AABBDD)with three distinct *** sizes of the wheat genome are quite large compared to many other kinds and the availability of a diversity of genetic knowledge and normal structure at breeding lines of wheat,Therefore,genome sequence approaches based on techniques of Artificial Intelligence(AI)are *** paper focuses on using the Wheat genome sequence will assist wheat producers in making better use of their genetic resources and managing genetic variation in their breeding program,as well as propose a novel model based on deep learning for offering a fundamental overview of genomic prediction theory and current *** this paper,the hyperparameters of the network are optimized in the CNN to decrease the requirement for manual search and enhance network performance using a new proposed model built on an optimization algorithm and Convolutional Neural Networks(CNN).

关键词： Gene expression convolutional neural network optimization algorithm genomic prediction wheat

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Characterization of Hydroxyapatite Extracted from Crab Shell Using the Hydrothermal Method with Varying Holding Times

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Journal of Renewable Materials 2024年第6期12卷 1145-1163页

作者： Deni Fajar Fitriyana Rifky ismail Athanasius Priharyoto Bayuseno Januar Parlaungan Siregar Tezara Cionita Department of Mechanical Engineering Faculty of EngineeringDiponegoro UniversitySemarangJawa Tengah50275Indonesia Department of Mechanical Engineering Faculty of EngineeringUniversitas Negeri SemarangGunung PatiSemarang50229Indonesia Center for Biomechanics BiomaterialBiomechatronicsand Biosignal Processing(CBIOM3s)Diponegoro UniversitySemarang50275Indonesia Automotive Engineering Center(AEC) Universiti Malaysia Pahang Al-Sultan Abdullah(UMPSA)PahangMalaysia Faculty of Mechanical&Automotive Engineering Technology Universiti Malaysia Pahang Al-Sultan AbdullahPekan26600Malaysia Faculty of Engineering and Quantity Surveying INTI International UniversityNilaiMalaysia

Hydroxyapatite(HA)is a bio ceramic commonly utilized in bone tissue engineering due to its bioactive and osteoconductive *** shells are usually disregarded as waste material despite their significant CaCo_(3) content,and have not been widely utilized in the synthesis of *** study aims to synthesize and analyze HA derived from crab shells using the hydrothermal method with different durations of holding *** study utilized precipitated calcium carbonate(PCC)derived from crab *** a hydrothermal reactor set at 160°C and varying holding times of 14(HA_14),16(HA_16),and 18(HA_18)h,a PCC and(NH4)2HPo4 mixture was used to synthesize *** synthesis results were analyzed using scanning electron microscopy(SEM),fourier transform infrared spectroscopy(FTIR),and X-ray diffraction(XRD)*** study has accomplished the synthesis of HA from crab ***,the final product of synthesis still contained CaCo_(3) as an *** prolonged hydrothermal holding time of 14 to 18 h resulted in a reduction of impurities while increasing the percentage of crystal weight and crystallite size of *** CH_18 is the best-quality product generated in this *** specimen produced HA with the highest percentage of crystal weight and crystallite size compared to the other ***,specimen CH_18 exhibited the lowest concentration of *** Ca/P ratio in this specimen was also the closest to *** Ca/P ratio,crystallite size,and crystal weight percentage of this specimen are 1.54,19.06 nm,and 99.1%,respectively.

关键词： Hydroxyapatite crab shells CaCo_(3) hydrothermal holding time

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Protection of steel hooks embedded in glass-fiber-reinforced concrete against macrocell corrosion

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Petroleum Research 2024年第2期9卷 317-326页

作者： Husnu Gerengi Muhammed Maraşlı Marziya Rizvi Beni Kohen ismail Taşkıran Corrosion Research Laboratory Department of Mechanical EngineeringDuzce University81620DuzceTurkey Department of Engineering and Applied Sciences University of BergamoBGItaly Fibrobeton Company R&D Center DuzceTurkey Department of Chemistry Babasaheb Bhimrao Ambedkar UniversityLucknow226003U.PIndia

This study evaluated the corrosion behavior of steel hooks embedded in GFRC,which were protected by a zinc-rich(96%Zn)galvanizing *** coating provided the hooks with active cathodic protection and a passive physical *** corrosion may form when the anode is smaller than the total steel ***,the steel hooks at the embedment juncture were additionally sealed against water ingress and air exchange using a construction *** study was conducted in three phases in a salt-spray ***,the electrogalvanized steel hooks embedded in GFRC were allowed to freely corrode for 7 *** the second phase,the electrogalvanized steel hooks were painted with the zinc-rich coating and observed over 7 *** the third phase,the steel hooks were protected by the zinc-rich coating together with a primer and construction sealant,and observed over 7 *** evaluate the electrogalvanized hooks and the corrosion products formed,the thickness of the material was *** on the metal surface was inferred by studying the surface morphology of the hooks at various points of contact and after different periods of time.

关键词： Steel rebars Concrete corrosion GFRC Galvanization Sealant

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Understanding osteoporosis: Pathophysiology, Risk Factors, Diagnosis, and Management

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Advances in Aging Research 2024年第3期13卷 25-40页

作者： Mahmoud ismail Division of Geriatrics University at Buffalo Buffalo NY USA

osteoporosis is a systemic skeletal disease characterized by low bone mineral density (BMD) and deterioration of bone architecture, resulting in reduced bone strength and, consequently, increased susceptibility to fractures which poses a significant public health concern worldwide, particularly in aging populations [1]. The health-economic impact of vertebral and hip fractures has been extensively explored and it is well known that these fractures are associated with morbidity/disability and increased mortality;they also account for a substantial portion of the direct fracture costs. This review aims to provide a comprehensive overview of osteoporosis, including its pathophysiology, risk factors, diagnostic approaches, and management strategies. By elucidating the multifaceted nature of this condition, healthcare providers can better identify individuals at risk, implement preventive measures, and optimize treatment to reduce the burden of osteoporotic fractures.

关键词： osteoporosis Bone Mineral Density Fractures Risk Factors Diagnosis Management FRAX (Fracture Risk Assessment Tool) Trabecular Bone Score (TBS)

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