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Triple-Band metamaterial Inspired Antenna for Future Terahertz(THz)Applications

Computers, materials & Continua 2022年第7期72卷 1071-1087页

作者： Adel Y.I.Ashyap S.Alamri S.H.Dahlan Z.Z.Abidin m.Inam Abbasi Huda A.majid m.R.Kamarudin Y.A.Al-Gumaei m.Hashim Dahri Center for Applied Electromagnetic(EmCenter) Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn Malaysia(UTHM)Batu Pahat86400JohorMalaysia Faculty of Engineering Electrical Engineering Dep. Al Baha UniversityAlaqiq65799Al-BahaSaudi Arabia Advanced Telecommunication Research Center(ATRC) Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn Malaysia(UTHM)Batu Pahat86400JohorMalaysia Faculty of Electrical and Electronic Engineering Technology Universiti Teknikal Malaysia MelakaHang Tua Jaya76100Durian TunggalMelakaMalaysia Department of mathematics Physicsand Electrical EngineeringNorthumbria UniversityNE18ST Newcastle Upon TyneUK Department of Electronic Engineering Dawood University of Engineering and TechnologyKarachi74800Pakistan

For future healthcare in the terahertz(THz)band,a triple-band microstrip planar antenna integrated with metamaterial(mTm)based on a polyimide substrate is *** frequencies of operation are 500,600,and 880 *** triple-band capability is accomplished by etching metamaterial on the patch without affecting the overall antenna *** of a partial ground plane,a full ground plane is used as a buffer to shield the body from back radiation emitted by the *** overall dimension of the proposed antenna is 484×484μm^(2).The antenna’s performance is investigated based on different crucial factors,and excellent results are *** gain for the frequencies 500,600,880GHz is 6.41,6.77,10.1 dB,respectively while the efficiency for the same frequencies is 90%,95%,96%,*** research has been conducted by mounting the presented antenna on a single phantom layer with varying dielectric *** results show that the design works equally well with and without the phantom model,in contrast to a partially ground antenna,whose performance is influenced by the presence of the phantom *** a result,the presented antenna could be helpful for future healthcare applications in the THz band.

关键词： THz metamaterial triple-band wireless body area networks(WBAN)

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Preparation of new and novel wave like poly(2-anisidine) zirconium tungstate nanocomposite: Thermal, electrical and ion-selective studies

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中国化学工程学报（英文版） 2019年第2期

作者： Anish Khan Aftab Aslam Parwaz Khan mahmoud A.hussein Bernaurdshaw Neppolian Abdullah m.Asiri

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纳米纤维素基复合气凝胶的制备及性质研究

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中国皮革 2022年第10期51卷 1-8,12页

作者：丁伟李硕琳陈永芳刘海腾 mohammed hussein Seid 庞晓燕丁志文中国皮革制鞋研究院有限公司北京100015 中国轻工业皮革及制鞋绿色制造技术重点实验室北京100015 中国—埃塞俄比亚皮革技术“一带一路”联合实验室北京100015 埃塞俄比亚皮革工业发展研究院亚的斯亚贝巴24692

为拓展功能皮革的制造方法,以羧基化纤维素纳米纤维(CCNF)、硅烷偶联剂(KH560)和聚乙烯亚胺(PEI)为原料制备了纳米纤维素基复合气凝胶(CSP-AG)。通过调控CCNF、KH560和PEI间的配比制备了不同的CSP-AGs,考察了其结构与基本性质以及CSP-A... 详细信息

为拓展功能皮革的制造方法,以羧基化纤维素纳米纤维(CCNF)、硅烷偶联剂(KH560)和聚乙烯亚胺(PEI)为原料制备了纳米纤维素基复合气凝胶(CSP-AG)。通过调控CCNF、KH560和PEI间的配比制备了不同的CSP-AGs,考察了其结构与基本性质以及CSP-AG在生物基醛鞣革涂饰中的应用性能。结果表明,不同组分配比下,CSP-AG均具有良好的力学强度和低密度(最低为0.026 g/cm^(3))。KH560可与PEI和CCNF进行有效反应,形成多孔网络结构,且两者在网络结构中的分布均匀。此外,CSP-AG的热稳定性良好,其导热系数低(最低为0.042 49 W/(m·k))。涂饰应用结果表明,相较于未经涂饰的革样和经三防整理剂(SF)涂饰的革样,经SF-AG涂饰的革样具更优的隔热和疏水性能且革样难燃。

关键词：纳米纤维素生物基气凝胶皮革涂饰隔热性能疏水性能阻燃性能

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Effects of annealing temperature on shape transformation and optical properties of germanium quantum dots

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Chinese Physics B 2015年第2期24卷 459-466页

作者： Alireza Samavati Z.Othaman S.K.Ghoshal m.K.mustafa Ibn Sina Institute for Fundamental Science Studies Universiti Teknologi Malaysia Advanced Optical material Research Group Department of PhysicsFaculty of ScienceUniversiti Teknologi Malaysia Faculty of Science Technology and Human Development Universiti Tun Hussein Onn Malaysia

The influences of thermal annealing on the structural and optical features of radio frequency（rf） magnetron sputtered self-assembled Ge quantum dots（QDs） on Si（100） are *** oriented structures of Ge along the（220） and（111） directions together with peak shift and reduced strain（4.9%to 2.7%） due to post-annealing at 650 ℃ are discerned from x-ray differaction（XRD） *** force microscopy（AFm） images for both pre-annealed and post-annealed（650 ℃） samples reveal pyramidal-shaped QDs（density - 0.26×10^11 cm^-2） and dome-shape morphologies with relatively high density - 0.92×10^11 cm^-2,*** shape transformation is attributed to the mechanism of inter-diffusion of Si in Ge interfacial intermixing and strain *** annealing temperature assisted QDs structural evolution is explained using the theory of nucleation and growth kinetics where free energy minimization plays a pivotal *** observed red-shift - 0.05 eV in addition to the narrowing of the photoluminescence peaks results from thermal annealing,and is related to the effect of quantum ***,the appearance of a blue-violet emission peak is ascribed to the recombination of the localized electrons in the Ge-QDs/SiO2 or GeOx and holes in the ground state of Ge *** spectra of both samples exhibit an intense Ge-Ge optical phonon mode which shifts towards higher frequency compared with those of the bulk *** experimental Raman profile is fitted to the models of phonon confinement and size distribution combined with phonon confinement to estimate the mean dot sizes.A correlation between thermal annealing and modifications of the structural and optical behavior of Ge QDs is *** growth of Ge QDs with superior properties suitable for optoelectronic applications is demonstrated.

关键词： Ge QDs sputtering surface morphology optical properties

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对比增强FDG PET/CT对经桥式治疗后等待肝移植的肝细胞肝癌病人甲胎蛋白升高的有效性评价

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国际医学放射学杂志 2019年第1期 128-128页

作者： R.Refaat m.A.A.Basha m.S.Hassan R.S.hussein A.A.E.Sammak D.A.E.A.Sammak 周健 Department of Radiodiagnosis Ain Shams University

摘要目的评价对比增强18F-FDG PET/CT对经桥式治疗后等待肝移植(LT)的肝细胞癌(HCC)病人中甲胎蛋白(AFP)持续升高的诊断准确性及阳性表现。方法本前瞻性

关键词：对比增强 FDG PET/CT PET 肝移植 CT

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Reduction in secondary dendrite arm spacing in cast eutectic Al–Si piston alloys by cerium addition

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International Journal of minerals,metallurgy and materials 2017年第1期24卷 91-101页

作者： R.Ahmad m.B.A.Asmael N.R.Shahizan S.Gandouz Department of manufacturing and Industrial Engineering Faculty of Mechanical and Manufacturing EngineeringUniversiti Tun Hussein Onn MalaysiaParit Raja86400 Batu PahatJohorMalaysia

The effects of Ce on the secondary dendrite arm spacing（SDAS） and mechanical behavior of Al-Si-Cu-mg alloys were investigated. The reduction of SDAS at different Ce concentrations was evaluated in a directional solidification experiment via computer-aided cooling curve thermal analysis（CA-CCTA）. The results showed that 0.1wt%-1.0wt% Ce addition resulted in a rapid solidification time, ？ts, and low solidification temperature, ？T_S, whereas 0.1wt% Ce resulted in a fast solidification time, Δ^（ta-Al）, of the α-Al phase. Furthermore, Ce addition refined the SDAS, which was reduced to approximately 36%. The mechanical properties of the alloys with and without Ce were investigated using tensile and hardness tests. The quality index（Q） and ultimate tensile strength of（UTS） Al-Si-Cu-mg alloys significantly improved with the addition of 0.1wt% Ce. moreover, the base alloy hardness was improved with increasing Ce concentration.

关键词： eutectic alloys aluminum silicon alloys cerium microstructure dendrites spacing mechanical properties

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Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

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Computers, materials & Continua 2023年第2期74卷 3607-3625页

作者： mohammed S.m.Gismalla Asrul I.Azmi mohd R.Salim Farabi Iqbal mohammad F.L.Abdullah mosab Hamdan muzaffar Hamzah Abu Sahmah m.Supa’at School of Electrical Engineering Faculty of EngineeringUniversiti Teknologi MalaysiaSkudai81310Malaysia Lightwave Communications Research Group(LCRG) Faculty of Electrical EngineeringUniversiti Teknologi Malaysia(UTM)SkudaiJohorMalaysia Department of Electronics and Electrical Engineering Faculty of EngineeringInternational University of AfricaKhartoum12223Sudan Department of Communication Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia(UTHM)Parit RajaBatu Pahat86400JohorMalaysia Faculty of Computing and Informatics Universiti Malaysia SabahKota Kinabalu88400Malaysia Department of Computer Science University of São PauloSão PauloBrazil

Visible light communication(VLC),which is a prominent emerging solution that complements the radio frequency(RF)technology,exhibits the potential to meet the demands of fifth-generation(5G)and beyond *** random movement of mobile terminals in the indoor environment is a challenge in the VLC *** model of optical attocells has a critical role in the uniform distribution and the quality of communication links in terms of received power and signal-to-noise ratio(SNR).As such,the optical attocells positions were optimized in this study with a developed try and error(TE)*** optimized optical attocells were examined and compared with previous *** novel approach had successfully increased minimum received power from−1.29 to−0.225 dBm,along with enhanced SNR performance by 2.06 *** bit error rate(BER)was reduced to 4.42×10−8 and 6.63×10−14 by utilizing OOK-NRZ and BPSK modulation techniques,*** optimized attocells positions displayed better uniform distribution,as both received power and SNR performances improved by 0.45 and 0.026,*** the results of the proposed model are optimal,it is suitable for standard office and room model applications.

关键词： Visible light communication(VLC) optical attocell received power signal-to-noise ratio(SNR) bit error rate(BER) coefficient of variation(CV)

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modelling and Performance Analysis of Visible Light Communication System in Industrial Implementations

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Computers, materials & Continua 2023年第11期77卷 2189-2204页

作者： mohammed S.m.Gismalla Asrul I.Azmi mohd R.Salim Farabi Iqbal mohammad F.L.Abdullah mosab Hamdan muzaffar Hamzah Abu Sahmah m.Supa’at Faculty of Electrical Engineering Faculty of EngineeringUniversiti TeknologiMalaysiaSkudai81310Malaysia Lightwave Communications Research Group(LCRG) Faculty of Electrical EngineeringUniversiti TeknologiSkudaiJohorMalaysia Department of Communication Engineering Faculty of Electrical and Electronic EngineeringUniversiti Tun Hussein Onn Malaysia(UTHM)Parit RajaBatu PahatJohor86400Malaysia Faculty of Computing and Informatics Universiti Malaysia SabahKota Kinabalu88400Malaysia Department of Computer Science University of São PauloSão PauloBrazil

Visible light communication(VLC)has a paramount role in industrial implementations,especially for better energy efficiency,high speed-data rates,and low susceptibility to ***,since studies on VLC for industrial implementations are in scarcity,areas concerning illumination optimisation and communication performances demand further *** such,this paper presents a new modelling of light fixture distribution for a warehouse model to provide acceptable illumination and communication *** proposed model was evaluated based on various semi-angles at half power(SAAHP)and different height levels for several parameters,including received power,signal to noise ratio(SNR),and bit error rate(BER).The results revealed improvement in terms of received power and SNR with 30 mbps data *** modulations were studied to improve the link quality,whereby better average BER values of 5.55×10^(−15) and 1.06×10^(−10) had been achieved with 4 PAm and 8 PPm,*** simulation outcomes are indeed viable for the practical warehouse model.

关键词： Visible light communication(VLC) industrial applications warehouse model light fixtures bit error rate(BER)

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Two-Point Resistance on the Centered-Triangular Lattice

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Chinese Physics Letters 2018年第2期35卷 6-10页

作者： m.Q.Owaidat A.A.Al-Badawi J.H.Asad mohammed Al-Twiessi Department of Physics Al-Hussein Bin Talal University Department of Physics Faculty of SciencesTaibah University Department of Physics Faculty of Arts and SciencesPalestine Technical University

The resistance between any two lattice points in an infinite, centered-triangular lattice of equal resistors is determined using the lattice Green function method. It is shown that the two-point resistance on the centered-triangular lattice is expressed in terms of the resistance of a triangular lattice. Some exact values for the resistance near the origin of the lattice are presented. For large separation between lattice points the asymptotic forms of the resistance are calculated.

关键词： Two-Point Resistance on the Centered-Triangular Lattice

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The SUPER reporting guideline suggested for reporting of surgical technique

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Hepatobiliary Surgery and Nutrition 2023年第4期12卷 534-544,I0024-I0026页

作者： Kaiping Zhang Yanfang ma Jinlin Wu Qianling Shi Leandro Cardoso Barchi marco Scarci Rene Horsleben Petersen Calvin S.H.Ng Steven Hochwald Ryuichi Waseda Fabio Davoli Robert Fruscio Giovanni Battista Levi Sandri michel Gonzalez Benjamin Wei Guillaume Piessen Jianfei Shen Xianzhuo Zhang Panpan Jiao Yulong He Nuria m.Novoa Benedetta Bedetti Sebastien Gilbert Alan D.L.Sihoe Alper Toker Alfonso Fiorelli marcelo F.Jimenez Toni Lerut Aung Y.Oo Grace S.Li Xueqin Tang Yawen Lu hussein Elkhayat Tomaz Stupnik Tanel Laisaar Firas Abu Akar Diego Gonzalez-Rivas Zhanhao Su Bin Qiu Stephen D.Wang Yaolong Chen Shugeng Gao Editorial Office AME Publishing CompanyHong KongChina School of Chinese medicine Hong Kong Baptist UniversityHong KongChina Department of Cardiovascular Surgery Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhouChina Evidence-based medicine Center School of Basic Medical SciencesLanzhou UniversityLanzhouChina Lanzhou University Institute of Health Data Science LanzhouChina Digestive Surgery Division Department of GastroenterologyUniversity of Sao Paulo School of MedicineSão PauloBrazil Department of Cardiothoracic Surgery Imperial College Healthcare NHS TrustLondonUK Department of Cardiothoracic Surgery University Hospital of CopenhagenRigshospitaletCopenhagenDenmark The Chinese University of Hong Kong Prince of Wales HospitalShatinNew TerritoriesHong KongChina Department of Surgical Oncology Roswell Park Cancer InstituteBuffaloNYUSA Department of General Thoracic Breast and Pediatric SurgeryFukuoka UniversityFukuokaJapan Department of Thoracic Surgery AUSL RomagnaS.Maria delle Croci Teaching HospitalRavennaItaly Clinic of Obstetrics and Gynecology University of Milan-BicoccaSan Gerardo HospitalMonzaItaly Division of General Surgery and Liver Transplantation S.Camillo HospitalRomeItaly Service of Thoracic Surgery Lausanne University Hospital(CHUV)LausanneSwitzerland Division of Cardiothoracic Surgery Department of SurgeryUniversity of Alabama BirminghamBirminghamALUSA University of Lille CNRSInsermCHU LilleUMR9020-U1277-CANTHER-Cancer Heterogeneity Plasticity and Resistance to TherapiesLilleFrance Department of Cardiothoracic Surgery Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical UniversityLinhaiChina The First School of Clinical medicine Lanzhou UniversityLanzhouChina Thoracic Surgery Service University Hospital of SalamancaBiomedical Institute of SalamancaSalamancaSpain Department of Thoracic Surgery Helios Clinic Bonn/Rhein SiegBonnGermany Division of Thoracic Surgery Department of SurgeryThe Ottawa

Background:Existing reporting guidelines pay insufficient attention to the detail and comprehensiveness reporting of surgical *** Surgical techniqUe rePorting chEcklist and standaRds(SUPER)aims to address this gap by defining reporting standards for surgical *** SUPER guideline intends to apply to articles that encompass surgical technique in any study design,surgical discipline,and stage of surgical ***:Following the EQUATOR(Enhancing the QUAlity and Transparency Of health Research)Network approach,16 surgeons,journal editors,and methodologists reviewed existing reporting guidelines relating to surgical technique,reviewed papers from 15 top journals,and brainstormed to draft initial items for the *** initial items were revised through a three-round Delphi survey from 21 multidisciplinary Delphi panel experts from 13 countries and *** final SUPER items were formed after an online consensus meeting to resolve disagreements and a three-round wording refinement by all 16 SUPER working group members and five SUPER ***:The SUPER reporting guideline includes 22 items that are considered essential for good and informative surgical technique *** items are divided into six sections:background,rationale,and objectives(items 1 to 5);preoperative preparations and requirements(items 6 to 9);surgical technique details(items 10 to 15);postoperative considerations and tasks(items 16 to 19);summary and prospect(items 20 and 21);and other information(item 22).Conclusions:The SUPER reporting guideline has the potential to guide detailed,comprehensive,and transparent surgical technique reporting for *** may also assist journal editors,peer reviewers,systematic reviewers,and guideline developers in the evaluation of surgical technique papers and help practitioners to better understand and reproduce surgical technique.

关键词： Surgical technique surgical innovation reporting guideline reporting checklist Surgical techniqUe rePorting chEcklist and standaRds(SUPER)

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