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Zinc-doped hydroxyapatite-zeolite/polycaprolactone composites coating on magnesium substrate for enhancing in-vitro corrosion and antibacterial performance

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Transactions of Nonferrous Metals Society of China 2020年第1期30卷 123-133页

作者： Nida IQBAL Saman IQBAL Tanveer IQBAL H.R.BAKHSHESHI-RAD Ahmed ALSAKKAF Ahmad KAMIL Mohammed Rafiq abdul kadir mohd Hasbullah IDRIS H.Balaji RAGHAV Biomedical Engineering Centre University of Engineering and TechnologyKala Shah Kaku(KSK)CampusLahorePakistan Department of Physics University of the PunjabQuaid-e-Azam CampusLaborePakistan Department of Chemical Polymer&Composite Material Engineering University of Engineering and TechnologyKala Shah Kaku(KSK)New CampusLahorePakistan Advanced Materials Research Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran School of Mechanical Engineering Faculty of EngineeringUniversiti Teknologi MalaysiaJohorMalaysia Kulliyyah of Science International Islamic University MalaysiaBandar Indera Mahkota CampusJalan Sultan Ahmad Shah25200 KuantanPahang Darul MakmurMalaysia School of Biomedical Engineering and Health Sciences Faculty of EngineeringUniversiti Teknologi MalaysiaJohorMalaysia Tissue Engineering Group(TEG) National Orthopaedic Centre of Excellence in Research and Learning(NOCERAL)Department of Orthopaedic SurgeryFaculty of MedicineUniversity of Malaya50603 Lembah PantaiKuala LumpurMalaysia

This work is focused on developing zinc-doped hydroxyapatite-zeolite(Zn HA-Zeo)and polycaprolactone(PCL)composite coatings on magnesium(Mg)substrate to improve the corrosion resistance and antimicrobial ***-coating technique was used to coat Zn HA-Zeo/PCL on the Mg substrate at room *** samples were subjected to field emission scanning electron microscopy(FESEM),X-ray diffraction(XRD),Fourier transform infrared(FTIR),energy dispersive X-ray spectroscopy(EDX)and antimicrobial *** demonstrated that composite coatings consist of HA,scholzite,zeolite,and PCL *** spectra indicated the presence of calcium(Ca),silicon(Si),aluminum(Al),zinc(Zn),phosphorus(P)and oxygen(O).The composite surface appeared in spherical-like microstructure on coating with thickness ranging 226-260μ***-doped HA-Zeo composite coating had a high corrosion resistance and provided sufficient protection to the Mg surface against galvanic *** Zn HA-Zeo coating samples exhibited superior disc inhibition by confirming antimicrobial activity against the *** as compared to HA-Zeo *** these results showed that the Zn HA-Zeo coatings not only improved the corrosion resistance,but also enhanced the antimicrobial property and hence they can be used as suitable candidates for implant applications.

关键词： biodegradable magnesium bioceramics coating corrosion resistance antimicrobial activity

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Green5G: Enhancing Capacity and Coverage in Device-to-Device Communication

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Computers, Materials & Continua 2021年第5期67卷 1933-1950页

作者： abdul Rehman Javed Rabia Abid Bakhtawar Aslam Hafiza Ammara Khalid Mohammad Zubair Khan omar H.Alhazmi Muhammad Rizwan Department of Cyber Security Air UniversityIslamabadPakistan Department of Computer Science Kinnaird College for WomenLahore54000Pakistan Department of Computer Science College of Computer Science and EngineeringTaibah UniversityMadinahSaudi Arabia

With the popularity of green computing and the huge usage of networks,there is an acute need for expansion of the 5G network.5G is used where energy efficiency is the highest priority,and it can play a pinnacle role in helping every industry to hit *** in the 5G network,conventional performance guides,such as network capacity and coverage are still major issues and need *** to Device communication(D2D)communication technology plays an important role to improve the capacity and coverage of 5G technology using different *** issue of energy utilization in the IoT based system is a significant exploration *** optimizationin D2D communication is an important *** need to resolve this issue for increasing system *** IoT speaks to the issue of lessening energy utilization of IoT gadgets which accomplishes a supportable climate for IoT *** this paper,we improve the capacity and coverage of 5G technology using Multiple Inputs Multiple Outputs(MU-MIMO).MUMIMO increases the capacity of 5G in D2D *** also present all the problems faced by 5G technology and proposed architecture to enhance system performance.

关键词： Green computing 5G energy efficiency resource optimization device to device communication multiple input multiple output

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Root-Of-Trust for Continuous Integration and Continuous Deployment Pipeline in Cloud Computing

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Computers, Materials & Continua 2022年第11期73卷 2223-2239页

作者： abdul Saboor mohd Fadzil Hassan Rehan Akbar Erwin Susanto Syed Nasir Mehmood Shah Muhammad Aadil Siddiqui Saeed Ahmed Magsi High-Performance Cloud Computing Centre(HPC3) Department of Computer&Information SciencesUniversiti Teknologi PETRONASSeri IskandarPerakMalaysia Centre for Research in Data Science(CeRDaS) Department of Computer&Information SciencesUniversiti Teknologi PETRONASSeri IskandarPerakMalaysia School of Electrical Engineering Telkom UniversityBandungIndonesia KICSIT Institute of Space Technology(IST)IslamabadPakistan Department of Electrical and Electronics Engineering Universiti Teknologi PETRONASSeri IskandarPerakMalaysia

Cloud computing has gained significant use over the last decade due to its several benefits,including cost savings associated with setup,deployments,delivery,physical resource sharing across virtual machines,and availability of on-demand cloud ***,in addition to usual threats in almost every computing environment,cloud computing has also introduced a set of new threats as consumers share physical resources due to the physical co-location ***,since there are a growing number of attacks directed at cloud environments(including dictionary attacks,replay code attacks,denial of service attacks,rootkit attacks,code injection attacks,etc.),customers require additional assurances before adopting cloud ***,the continuous integration and continuous deployment of the code fragments have made cloud services more prone to security *** this study,the model based on the root of trust for continuous integration and continuous deployment is proposed,instead of only relying on a single signon authentication method that typically uses only id and *** underlying study opted hardware security module by utilizing the Trusted Platform Module(TPM),which is commonly available as a cryptoprocessor on the motherboards of the personal computers and data center *** preliminary proof of concept demonstrated that the TPM features can be utilized through RESTful services to establish the root of trust for continuous integration and continuous deployment pipeline and can additionally be integrated as a secure microservice feature in the cloud computing environment.

关键词： Root of Trust(RoT) Trusted Platform Module(TPM) cryptoprocessor microservices Hardware Security Modules(HSM) DevOps

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Weapons Detection for Security and Video Surveillance Using CNN and YOLO-V5s

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Computers, Materials & Continua 2022年第2期70卷 2761-2775页

作者： abdul Hanan Ashraf Muhammad Imran abdulrahman M.Qahtani abdulmajeed Alsufyani omar Almutiry Awais Mahmood Muhammad Attique Mohamed Habib Department of Computer Science Shaheed Zulfikar Ali Bhutto Institute of Science and TechnologyIslamabad44000Pakistan Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia College of Applied Computer Science King Saud University(Almuzahmiyah Campus)Riyadh11543Saudi Arabia Department of Computer Science HITEC UniversityTaxila47080Pakistan College of Computing and Informatics Saudi Electronic UniversityRiyadhSaudi Arabia Faculty of Engineering Port Said UniversityPort Fuad CityEgypt

In recent years,the number of Gun-related incidents has crossed over 250,000 per year and over 85%of the existing 1 billion firearms are in civilian hands,manual monitoring has not proven effective in detecting *** is why an automated weapon detection system is *** automated convolutional neural networks(CNN)weapon detection systems have been proposed in the past to generate good ***,These techniques have high computation overhead and are slow to provide real-time detection which is essential for the weapon detection *** models have a high rate of false negatives because they often fail to detect the guns due to the low quality and visibility issues of surveillance *** research work aims to minimize the rate of false negatives and false positives in weapon detection while keeping the speed of detection as a key *** proposed framework is based on You Only Look Once(YOLO)and Area of Interest(AOI).Initially,themodels take pre-processed frames where the background is removed by the use of the Gaussian blur *** proposed architecture will be assessed through various performance parameters such as False Negative,False Positive,precision,recall rate,and F1 *** results of this research work make it clear that due to YOLO-v5s high recall rate and speed of detection are *** reached 0.010 s per frame compared to the 0.17 s of the Faster *** is promising to be used in the field of security and weapon detection.

关键词： Video surveillance weapon detection you only look once convolutional neural networks

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Enzymatic recovery of glycopeptides from different industrial grades edible bird’s nest and its by-products:nutrient,probiotic and antioxidant activities,and physicochemical characteristics

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Food Science and Human Wellness 2022年第6期11卷 1555-1564页

作者： Hidayati Syamimi mohd Noor Rafi dah mohd Ariff Lee Sin Chang Xin Yi Chai Hui Yan Tan Nur’Aliah Daud abdul Salam Babji Seng Joe Lim Faculty of Science and Technology Universiti Kebangsaan MalaysiaBangi 43600Malaysia International Institute for Halal Research and Training(INHART) International Islamic University Malaysia(IIUM)Jalan Gombak 53100Malaysia Faculty of Applied Sciences UCSI University Kuala LumpurCheras 56000Malaysia Faculty of Agriculture Science and Technology Universiti Putra Malaysia Bintulu CampusBintulu 97008Malaysia Innovative Centre for Confectionery Technology(MANIS) Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi 43600Malaysia

This study was conducted to recover edible bird’s nest(EBN)hydrolysates from different grades of EBN,including the industrial by-products,using enzymatic *** nutrient,physicochemical properties and antioxidant activities of the recovered hydrolysates at different hydrolysis times were *** showed that the recovery yield of enzymatic hydrolysis was above 89%for all grades of EBN and the degree of hydrolysis increased over *** content(0.321-0.433 mg/L)was below the permissible tolerance level for all ***,the antioxidant activities(DPPH and ABTS scavenging activities and ferric reducing antioxidant powder(FRAP)activity)were significantly higher(P≤0.05)in hydrolysates recovered from EBN by-products(EBNhC and EBNhD)as compared to the high grade EBN hydrolysates(EBNhA and EBNhB).The in-vitro probiotic activity of EBN and its hydrolysates were examined using the probiotic bacterium Lactobacillus ***,EBN by-products hydrolysate(EBNhD)recorded the highest number of ***(1.1×1011 CFU/mL),indicating that low grade EBN has the potential as prebiotic material that promotes probiotic *** study demonstrated the concept of using EBN by-products hydrolysates for various applications,such as functional ingredients with enhanced bioactivities,to improve its economic value.

关键词： Edible bird’s nest by-products Enzymatic hydrolysis Glycopeptides Lactobacillus plantarum Probiotic activity

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A Comprehensive Classification and Analysis of Geomagnetic Storms Over Solar Cycle 24

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Research in Astronomy and Astrophysics 2024年第8期24卷 75-84页

作者： Raja Adibah Raja Halim Shah Nurul Shazana abdul Hamid Mardina abdullah Adlyka Annuar Idahwati Sarudin Zahira mohd Radzi Akimasa Yoshikawa Department of Applied Physics Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia43600 BangiMalaysia Space Science Centre(ANGKASA) Institute of Climate ChangeUniversiti Kebangsaan Malaysia43600 BangiMalaysia Department of Electrical Electronic and Systems EngineeringFaculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiMalaysia School of Physics Universiti Sains Malaysia11800 USMPulau PinangMalaysia Malaysian Space Agency(MYSA) Kuala Lumpur50480Malaysia International Research Center for Space and Planetary Environmental Science(i-SPES) Kyushu University819-0395 FukuokaJapan

A geomagnetic storm is a global disturbance of Earth?s magnetosphere,occurring as a result of the interaction with magnetic plasma ejected from the *** considerable research,a comprehensive classification of storms for a complete solar cycle has not yet been fully developed,as most previous studies have been limited to specific storm *** study,therefore,attempted to present complete statistics for solar cycle 24,detailing the occurrence of geomagnetic storm events and classifying them by type of intensity(moderate,intense,and severe),type of complete interval(normal or complex),duration of the recovery phase(rapid or long),and the number of steps in the storm?s *** analysis was applied to data from ground-based magnetometers,which measured the Dst index as provided by the World Data Center for Geomagnetism,Kyoto,*** study identified 211 storm events,comprising moderate(177 events),intense(33 events),and severe(1 event)*** 36%of ICMEs and 23%of CIRs are found to be geoeffective,which caused geomagnetic *** to four-step development of geomagnetic storms was exhibited during the main phase for this solar *** showed the geomagnetic storms developed one or more steps in the main phase,which were probably related to the driver that triggered the geomagnetic storms.A case study was additionally conducted to observe the variations of the ionospheric disturbance dynamo(Ddyn)phenomenon that resulted from the geomagnetic storm event of 2015July *** attenuation of the Ddyn in the equatorial region was analyzed using the H component of geomagnetic field data from stations in the Asian sector(Malaysia and India).The variations in the Ddyn signatures were observed at both stations,with the TIR station(India)showing higher intensity than the LKW station(Malaysia).

关键词： (Sun)sunspots-Sun activity-(Sun)solar-terrestrial relations-Sun coronal mass ejections(CMEs)

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Thermal performance of cooling strategies for asphalt pavement: A state-of-the-art review

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第3期8卷 356-373页

作者： Salam Ridha Oleiwi Aletba Norhidayah abdul Hassan Ramadhansyah Putra Jaya Eeydzah Aminudin mohd Zul Hanif Mahmud Azman Mohamed Ahmed abdulameer Hussein School of Civil Engineering Faculty of EngineeringUniversiti Teknologi MalaysiaJohor Bahru 81300JohorMalaysia Department of Civil Engineering College of EngineeringUniversiti Malaysia PahangGambang 26300PahangMalaysia

Asphalt pavements absorb and store more heat than natural surfaces. Thus, high temperatures are emitted from conventional asphalt pavements, subsequently releasing heat into the atmosphere and contributing to the urban heat island(UHI) phenomenon. Several cool pavement strategies, including the provision of additives and materials, surface coating and layer design, have been introduced to reduce the impact of UHI. This article provides a detailed review of the thermal properties of these mitigation measures in the context of cool asphalt pavements. The literature can be divided into three segments. The first segment discusses the impact of pavements on UHI and heat transfer mechanisms in pavements. The second segment focuses on various thermo physical properties that play an important role in mitigation measures;these properties include albedo(a), emissivity(e),solar reflective index, thermal conductivity(k), specific heat capacity(Cp) and thermal diffusivity. The third segment discusses cool asphalt pavement strategies which specifically cover the ability of the pavement to absorb and reflect solar energy on the basis of the materials and treatments used. The literature reveals that cooling strategies that deal with the pavement surface are important due to its direct incident solar effect, which depends on surface colour, material, shape and roughness. By using high-albedo and high-emissivity surfaces, the pavement can store less heat and lower the surface temperature. These results can also be achieved by designing the materials and pavement layers with low thermal conductivity and high specific heat capacity to reduce thermal diffusivity and pavement temperature and thus combat the heat radiated by the asphalt pavement.

关键词： Road engineering Urban heat island Cool pavements Asphalt pavement Thermal properties

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Synthesis, Characterization and Phytotoxicity Assessment of Intercalated Insect Pheromone, Lignoceric Acid-Zinc Layered Hydroxide Nanohybrid

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Journal of Environmental Science and Engineering(B) 2023年第2期12卷 75-91页

作者： Rozita Ahmad mohd Zobir Hussein Siti Halimah Sarijo Wan Rasidah Wan abdul kadir Taufiq-Yap Yun Hin Forest Biotechnology Division Forest Research Institute MalaysiaKepong 52109SelangorMalaysia Institute of Nanoscience and Nanotechnology Universiti Putra MalaysiaSerdang 43400SelangorMalaysia Faculty of Applied Science Universiti Teknologi MARAShah Alam 40540SelangorMalaysia Chemistry Department Faculty of ScienceUniversiti Putra MalaysiaSerdang 43400SelangorMalaysia

A long chain insect pheromone for subterranean termites, LC (Lignoceric Acid), was intercalated into the inorganic interlayer, ZLH (Zinc Layered Hydroxide), resulting in the formation of a new nanohybrid, labelled as LCN (Lignocerate Nanohybrid). The formation of this inorganic-organic structure nanohybrid was synthesized by the co-precipitation method using ZnO (Zinc Oxide) as the starting material. The PXRD (Powder X-Ray Diffraction) results confirmed the intercalation process although the diffraction patterns of the resultant nanohybrid and the unbound pheromone were fairly similar but both have different basal spacings values. The FTIR (Fourier Transform Infrared) profiles and the chemical composition test supported the intercalation process with the percentage loading of LC into ZLH calculated to be 85%. The thermal stability of the free anion, LC was enhanced when it was transformed into LCN, increasing from 257 °C to 352 °C. The release of LC from the nanohybrid behaved in a sustained manner, governed by the pseudo-second order kinetic model with higher release of LC in sodium carbonate solution than the pH aqueous media. The synthesized nanohybrid was found to be safe for plant germination when the two seed types were successfully germinated in all the tested nanohybrid concentrations. However, the percentage seed germination and the radical seed length from the nanohybrid showed lower values compared to its counterpart anion, LC.

关键词： Insect pheromone ZLH ZnO controlled release termite

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A simple and purification-free nucleic acid extraction method for rapid diagnosis of malaria

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Asian Pacific Journal of Tropical Medicine 2023年第9期16卷 428-430页

作者： Lee Phone Youth Zen Meng Yee Lai mohd Hafizi abdul Hamid Jenarun Jelip Rose Nani Mudin Noor Hafizan Bt Mat Salleh Netty Darwina Dawam Nirzayanna Eyan abdul Ajak mohd Ashrin Afiq Bin Zainudin Yee Ling Lau Department of Parasitology Faculty of MedicineUniversiti Malaya50603 Kuala LumpurMalaysia Vector Borne Disease Sector Ministry of HealthPutrajayaMalaysia Lipis District Health Office PahangMalaysia State Health Department Negeri SembilanMalaysia Microbiology Sector Hospital Kuala Kubu BharuSelangorMalaysia

In a point of care setting for the diagnosis of malaria,DNA extraction using conventional methods are time-consuming and ***,in this study we aim to utilize a simple nucleic acid extraction method to directly extract DNA from *** would in turn reduce the time,cost and equipment needed to perform DNA *** method is then coupled with LAMP assay for rapid diagnosis of malaria.

关键词： diagnosis malaria utilize

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Implementation of drone technology for farm monitoring&pesticide spraying:A review

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Information Processing in Agriculture 2023年第2期10卷 192-203页

作者： abdul Hafeez Mohammed Aslam Husain S.P.Singh Anurag Chauhan mohd.Tauseef Khan Navneet Kumar Abhishek Chauhan S.K.Soni Rajkiya Engineering College Ambedkar NagarUP 224122India Rajkiya Engineering College BandaUP 210201India Rajkiya Engineering College BijnorUP 246725India MMMUT GorakhpurUP 273016India

The world receives more than 200 thousand people in a day and it is expected that the total world population will reach 9.6 billion by the year *** will result in extra food demand,which can only be met from enhanced crop ***,modernization of the agricultural sector becomes the need of the *** are many constraints that are responsible for the low production of crops,which can be overcome by using drone technology in the agriculture *** paper presents an analysis of drone technologies and their modifications with time in the agriculture sector in the last *** application of drones in the area of crop monitoring,and pesticide spraying for Precision Agriculture(PA)has been *** work done related to drone structure,multiple sensor development,innovation in spot area spraying has been ***,the use of Artificial Intelligent(AI)and deep learning for the remote monitoring of crops has been discussed.

关键词： Unmanned Aerial Vehicle Agriculture drone Pesticide spraying Crop monitoring Precision agriculture

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