检索结果-南通市图书馆

Comparative Study of the Effects of Nano ZnO and CuO on the Biodegradation,Biocompatibility,and Antibacterial Properties of micro-arc Oxidation Coating of magnesium Alloy

在线全文

学校读者我要写书评

暂无评论

Acta.m.tallurgica Sinica(English Letters) 2024年第2期37卷 242-254页

作者： Ying Shen Xianfeng Shan Iniobong P.Etim muha.m.d Ali siddiqui Yang Yang Zewen Shi Xuping Su Junxiu Chen Key Laboratory of materials Surface Science and Technology of Jiangsu Province Changzhou UniversityChangzhou213164China Department of Stomatology The Affiliated Xinhua Hospital of Dalian UniversityDalian116000China Department of Physics University of CalabarCalabar540242Nigeria metallurgical Engineering Department NED University of Engineering and TechnologyUniversity RoadKarachi75270Pakistan Ningbo No.2 Hospital Ningbo315010China

This research systematically examined the degradation,antibacterial effects,and biocompatibility of micro-arc oxidation(mAO)coatings with nano CuO and ZnO on extruded mg *** copper(Cu)and Zinc(Zn)possess antibacterial *** findings demonstrated that adding ZnO will appreciably reduce the degradation rate of mAO-coating alloy due to the self-sealing micro ***+mAO coating exhibited excellent antibacterial performance,with an antibacterial rate of over 90%within 6 h co-cultured with Staphylococcus ***,the antibacterial rate of ZnO+mAO coating reached 90%after 12 h *** test using mG63 cell indicated that the incorporation of CuO and ZnO did not notably affect the cell viability rate of the ***,after 14 days of culture,the CuO+mAO and ZnO+mAO coated samples exhibited higher alkaline phosphatase(ALP)activity than the mAO-coated and uncoated samples,suggesting favorable osteogenic properties.

关键词： Copper oxide Zinc oxide micro-arc oxidation(mAO)coating Corrosion behavior Antibacterial characteristics

SARS-CoV-2 aberrantly elevates mitochondrial bioenergetics to induce robust virus propagation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第6期9卷 2702-2715页

作者： Hye Jin Shin Wooseong Lee Keun Bon Ku Gun Young Yoon Hyun-Woo moon Chonsaeng Kim mi-Hwa Kim Yoon-Sun Yi Sangmi Jun Bum-Tae Kim Jong-Won Oh Aleem siddiqui Seong-Jun Kim Department of Convergent Research of Emerging Virus Infection Korea Research Institute of Chemical TechnologyDaejeon 34114Republic of Korea Gyeongnam Biohealth Research Center Gyeongnam Branch InstituteKorea Institute of ToxicologyJinju 52834Republic of Korea Center for Research Equipment Korea Basic Science InstituteCheongjuChungcheongbuk-do 28119Republic of Korea Department of Biotechnology Yonsei UniversitySeoul 03722Republic of Korea Division of Infectious Diseases School of MedicineUniversity of CaliforniaSan DiegoLa JollaCA 92093USA Present address:Department of microbiology Chungnam National University School of MedicineDaejeon 35015Republic of Korea

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is a‘highly transmissible respiratory pathogen,leading to severe multiorgan ***,knowledge regarding SARS-CoV-2-induced cellular alterations is *** this study,we report that SARSCoV-2 aberrantly elevates mitochondrial bioenergetics and activates the EGFR-mediated cell survival signal cascade during the early stage of viral ***-CoV-2 causes an increase in mitochondrial transmembrane potential via the SARS-CoV-2 RNAnucleocapsid cluster,thereby abnormally promoting mitochondrial elongation and the OXPHOS process,followed by enhancing ATP ***,SARS-CoV-2 activates the EGFR signal cascade and subsequently induces mitochondrial EGFR trafficking,contributing to abnormal OXPHOS process and viral *** EGFR inhibitors remarkably reduce SARS-CoV-2 propagation,among which vandetanib exhibits the highest antiviral *** of SARS-CoV-2-infected cells with vandetanib decreases SARS-CoV-2-induced EGFR trafficking to the mitochondria and restores SARS-CoV-2-induced aberrant elevation in OXPHOS process and ATP generation,thereby resulting in the reduction of SARS-CoV-2 ***,oral a.m.nistration of vandetanib to SARS-CoV-2-infected hACE2 transgenic mice reduces SARS-CoV-2 propagation in lung tissue and mitigates SARS-CoV-2-induced lung *** also exhibits potent antiviral activity against various SARS-CoV-2 variants of concern,including alpha,beta,delta and omicron,in in vitro cell culture *** together,our findings provide novel insight into SARS-CoV-2-induced alterations in mitochondrial dynamics and EGFR trafficking during the early stage of viral infection and their roles in robust SARS-CoV-2 propagation,suggesting that EGFR is an attractive host target for combating COVID-19.

关键词： alterations aberrant thereby

Effect of Cu/Zn Substitution in mgO Nanostructures for Tuning the Optical Bandgap and Structural Properties

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(materials Science) 2022年第6期37卷 1035-1040页

作者： ATIF Dawar S NASEEm Shah m ASIF siddiqui Ya.m.EN Bibi Department of Physics Federal Urdu University of ArtsScience and TechnologyKarachiPakistan Department of Chemistry Federal Urdu University of ArtsScience and TechnologyKarachiPakistan

Low cost co-precipitation method was used to synthesize Cu(0-0.05)doped mgO samples with fixed concertation of Zn=0.01.X-ray diffraction(XRD)spectra confirmed the phase purity of the samples for 0≤Cu≤0.03 doping *** secondary phase for 0.04≤Cu≤0.05 exhibited the formation of mixed metal *** crystallite size was found to increase from 17.5 to 23.5 nm for 0≤Cu≤0.03 and then decreased from 22 to 18.5 nm for 0.04≤Cu≤*** estimated bandgap first reduced from 5.48 to 4.88 eV and then increased from 5.21 to 5.36 *** morphology of the samples transformed from spheroidal shape to star-like *** obtained results reveal that the structural and optical property are in good agreement with the morphological *** peak shifting towards the lower values of vibrational frequency from 694 to 579 cm^(-1) confirms the incorporation of Cu/Zn in mg-O *** tuning of optical bandgap and structural properties with varying dopant concentration in mgO nanomaterials can be used for multifunctional modern energy storage and optoelectronic devices.

关键词： Cu/Zn doping mgO optical bandgap morphology vibrational modes

Development and assessment of a novel integrated system powered by parabolic trough collectors for combined power, heating and freshwater production

在线全文

学校读者我要写书评

暂无评论

Clean Energy 2023年第5期7卷 1110-1124页

作者： mohd Asjad siddiqui Eydhah a.m.trafi Department of mechanical Engineering Delhi Technological UniversityShahbad DaulatpurBawana RoadDelhi-110042India Department of mechanical Engineering Faculty of Engineering at RabighKing Abdulaziz UniversityJeddah 21589Saudi Arabia K.A.CARE Energy Research and Innovation Center King Abdulaziz UniversityJeddah 21589Saudi ArabiaCenter of Excellence in Desalination TechnologyKing Abdulaziz UniversityJeddah 21589Saudi Arabia

Hybrid solar-based integrated systems represent a viable solution for countries with abundant solar radiation,as they provide energy needs in an environmentally friendly way,offering a sustainable and economically advantageous energy solution that utilizes a free source of ***,this research offers a thermodynamic evaluation of a novel integrated system driven by solar energy that a.m. to produce power,heating and *** integrated system consists of a parabolic trough collector that uses CO_(2) as its working fluid and implements the supercritical carbon dioxide cycle to generate power and *** integrated system also in-cludes an adsorption desalination system with heat recovery between the condenser and evaporator,which employs a cutting-edge material called an aluminium fumarate metal–organic framework to produce fresh *** the modelling of a novel system,an en-gineering equation solver,which is considered a reliable tool for thermodynamic investigations,is *** effectiveness of an integrated system is evaluated using a.m.thematical model and different varying parameters are examined to ascertain their influence on thermal and exergy efficiency,specific daily water production and gained output *** results revealed that the parabolic trough collector achieved a thermal efficiency of 67.2%and an exergy efficiency of 41.2%under certain ***,the thermal efficiencies for electrical and heating were obtained 24.68%and 9.85%,***,the specific daily water production was calculated,showing promising results and an increase from 7.1 to 12.5 m3/ton/day,while the gain output ratio increased from 0.395 to 0.62 when the temperature of hot water increased from 65°C to 85°C,under the selected conditions.

关键词： PTC thermodynamic analysis supercritical CO_(2)power cycle adsorption desalination cycle aluminium fumarate

Infrared Spectroscopy-Based Chemometric Analysis for Lard Differentiation in meat Samples

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, materials & Continua 2023年第5期75卷 2859-2871页

作者： muha.m.d Aadil siddiqui m.H.md Khir Zaka Ullah muath Al Hasan Abdul Saboor Saeed a.m.d magsi Department of Electrical and Electronic Engineering Universiti Teknologi PetronasSeri Iskandar32610Malaysia College of Engineering Al Ain UniversityAl Ain64141United Arab Emirates High Performance Cloud Computing Centre(HPC) Universiti Teknologi PetronasSeri Iskandar32610Malaysia

One of the most pressing concerns for the consumer market is the detection of adulteration in meat products due to their *** rapid and accurate identification mechanism for lard adulteration in meat products is highly necessary,for developing a.m.chanism trusted by consumers and that can be used to make a definitive *** Transform Infrared Spectroscopy(FTIR)is used in this work to identify lard adulteration in cow,lamb,and chicken samples.A simplified extraction method was implied to obtain the lipids from pure and adulterated *** samples were obtained by mixing lard with chicken,lamb,and beef with different concentrations(10%–50%v/v).Principal component analysis(PCA)and partial least square(PLS)were used to develop a calibration model at 800–3500 cm^(−1).Three-dimension PCA was successfully used by dividing the spectrum in three regions to classify lard meat adulteration in chicken,lamb,and beef *** corresponding FTIR peaks for the lard have been observed at 1159.6,1743.4,2853.1,and 2922.5 cm−1,which differentiate chicken,lamb,and beef *** wavenumbers offer the highest determination coefficient R2 value of 0.846 and lowest root mean square error of calibration(RmSEC)and root mean square error prediction(RmSEP)with an accuracy of 84.6%.Even the tiniest fat adulteration up to 10%can be reliably discovered using this methodology.

关键词： Fourier transform infrared spectroscopy lard halal PCA PLS RmSEC RmSEP

TiO_2-water nanofluid in a porous channel under the effects of an inclined magnetic field and variable thermal conductivity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied mathematics and mechanics(English Edition) 2018年第8期39卷 1201-1216页

作者： A.A.siddiqui m.SHEIKHOLESLAmI Department of Basic Sciences Bahauddin Zakariya University Department of mechanical Engineering Babol Noshirvani Uiniversity of Technology

The TiO2-water based nanofluid flow in a channel bounded by two porous plates under an oblique magnetic field and variable thermal conductivity is formulated as a boundary-value problem(BVP). The BVP is analytically solved with the homotopy analysis method(HAm). The result shows that the concentration of the nanoparticles is independent of the volume fraction of TiO2nanoparticles, the magnetic field intensity, and the angle. It is inversely proportional to the mass diffusivity. The fluid speed decreases whereas the temperature increases when the volume fraction of the TiO2nanoparticles increases. This confirms the fact that the occurrence of the TiO2nanoparticles results in the increase in the thermal transfer rate. The fluid speed decreases and the temperature increases for both the pure water and the nanofluid when the magnetic field intensity and angle increase. The maximum velocity does not exist at the middle of the symmetric channel, which is in contrast to the plane-Poiseuille flow, but it deviates a little bit towards the lower plate, which absorbs the fluid with a very low suction velocity. If this suction velocity is increased, the temperature in the vicinity of the lower plate will be *** explicit expression for the friction factor-Reynolds number is then developed. It is shown that the Hartmann number of the nanofluid is smaller than that of pure water,while the Nusselt number of the nanofluid is larger than that of pure water. However,both the parameters increase if the magnetic field intensity increases.

关键词： TiO2 Nusselt number oblique magnetic field nanofluid homotopy analysis method(HAm) thermal transfer

Algebraic Properties for molecular Structure of magnesium Iodide

在线全文

学校读者我要写书评

暂无评论

Computer modeling in Engineering & Sciences 2023年第5期135卷 1131-1146页

作者： Ali N.A.Koam Ali a.m.d muha.m.d Azeem muha.m.d Kamran siddiqui Department of mathematics College of ScienceNew CampusJazan UniversityJazanSaudi Arabia College of Computer Science and Information Technology Jazan UniversityJazanSaudi Arabia Department of mathematics Riphah Institute of Computing and Applied SciencesRiphah International UniversityLahorePakistan Department of mathematics COMSATS University IslamabadLahorePakistan

As an inorganic chemical,magnesium iodide has a significant crystalline *** is a complex and multifunctional substance that has the potential to be used in a wide range of medical *** graph theory,on the other hand,provides a sufficient and cost-effective method of investigating chemical structures and networks.m-polynomial is a relatively new method for studying chemical networks and structures in molecular graph *** displays numerical descriptors in algebraic form and highlights molecular features in the form of a polynomial *** present a polynomials display of magnesium iodide structure and calculate several m-polynomials in this paper,particularly the m-polynomials of the augmented Zagreb index,inverse sum index,hyper Zagreb index and for the symmetric division index.

关键词： magnesium iodide m-polynomials algebraic properties of magnesium iodide algebraic formation of numerics of magnesium iodide

Support-Vector-machine-based Adaptive Scheduling in mode 4 Communication

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, materials & Continua 2022年第11期73卷 3319-3331页

作者： muha.m.d Adnan Khan a.m.d Abu-Khadrah Shahan Yamin siddiqui Taher m.Ghazal Tauqeer Faiz munir a.m.d Sang-Woong Lee Riphah School of Computing&Innovation Faculty of ComputingRiphah International UniversityLahore CampusLahore54000Pakistan Pattern Recognition and machine Learning Lab Department of SoftwareGachon UniversitySeongnam13557Korea College of Computing&Informatics Saudi Electronic UniversityRiyadh11673Saudi Arabia School of Computer Science Minhaj University LahoreLahore54000Pakistan Center for Cyber Security Faculty of Information Science and TechnologyUniversiti Kebangsaan Malaysia(UKM)43600BangiSelangorMalaysia School of Information Technology Skyline University CollegeUniversity City Sharjah1797SharjahUAE School of Computer Science National College of Business Administration&EconomicsLahore54000Pakistan

Vehicular ad-hoc networks(VANETs)are mobile networks that use and transfer data with vehicles as the network ***,VANETs are essentially mobile ad-hoc networks(mANETs).They allow all the nodes to communicate and connect with one *** of the main requirements in a VANET is to provide self-decision capability to the *** memory,which stores all the previous routes,is used by the vehicles to choose the optimal *** networks,communication is *** cellular-based vehicle-to-everything(CV2X)communication,vital information is shared using the cooperative awareness message(CAm)that is broadcast by each *** are allocated in a distributed manner,which is known as mode 4 *** support vector machine(SVm)algorithm is used in the SVm-CV2X-m4 system proposed in this *** k-fold model with different values of k is used to evaluate the accuracy of the SVm-CV2Xm4 *** results show that the proposed system achieves an accuracy of 99.6%.Thus,the proposed system allows vehicles to choose the optimal route and is highly convenient for users.

关键词： mode-4 communication ad-hoc vehicular network CV2X support vector machine

Fallopian tube assessment of the peristaltic-ciliary flow of a linearly viscous fluid in a finite narrow tube

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied mathematics and mechanics(English Edition) 2018年第3期39卷 437-454页

作者： H.ASHRAF a.m.siddiqui m.A.RANA Department of mathematics and Statistics Riphah International University Department of mathematics York CampusPennsylvania State University

The present theoretical assessment deals with the peristaltic-ciliary trans- port of a developing embryo within a fallopian tubal fluid in the human fallopian tube. a.m.thematical model of peristalsis-cilia induced flow of a linearly viscous fluid within a fallopian tubal fluid in a finite two-dimensional narrow tube is developed. The lubrica- tion approximation theory is used to solve the resulting partial differential equation. The expressions for axial and radial velocities, pressure gradient, stream function, volume flow rate, and time mean volume flow rate are derived. Numerical integration is performed for the appropriate residue time over the wavelength and the pressure difference over the wavelength. moreover, the plots of axial velocity, the appropriate residue time over wavelength, the vector, the pressure difference over wavelength, and the streamlines are displayed and discussed for emerging parameters and constants. Salient features of the pumping characteristics and the trapping phenomenon are discussed in detail. Yhrther- more, a comparison between the peristaltic flow and the peristaltic-ciliary flow is made as the special case. Relevance of the current results to the transport of a developing embryo within a fallopian tubal fluid from ampulla to the intramural in the fallopian tube is also explored. It reveals the fact that cilia along with peristalsis helps to complete the required mitotic divisions while transporting the developing embryo within a fallopian tubal fluid in the human fallopian tube.

关键词： peristaltic-ciliary flow linearly viscous fluid analytic solution human fal-lopian tube