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MXenes and heterostructures-based electrocatalysts for hydrogen evolution reaction:Recent developments and future outlook

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Journal of Energy Chemistry 2024年第5期92卷 176-206页

作者： abdul Hanan Hafiz Taimoor Ahmed Awan Faiza Bibi Raja Rafidah Raja sulaiman Wai Yin Wong Rashmi Walvekar Seema Singh Mohammad Khalid Sunway Centre for Electrochemical Energy and Sustainable Technology(SCEEST) School of Engineering and TechnologySunway UniversityNo.5 Jalan UniversitiBandar Sunway47500 Petaling JayaSelangorMalaysia Fuel Cell Institute Universiti Kebangsaan Malaysia43600 UKM BangiSelangorMalaysia Faculty of Innovation and Technology School of EngineeringChemical Engineering ProgrammeNo.1 Jalan Taylor’sTaylor’s University Malaysia47500 Subang JayaSelangorMalaysia Chitkara Centre for Research and Development Chitkara UniversityHimachal Pradesh 174103India School of Applied and Life Sciences Uttaranchal UniversityDehradunUttarakhand 248007India Manipal Institute of Technology Manipal Academy of Higher EducationManipal 576104KarnatakaIndia Centre of Research Impact and Outcome Chitkara UniversityPunjab 140401India

The increasing focus on electrocatalysis for sustainable hydrogen(H_(2))production has prompted significant interest in MXenes,a class of two-dimensional(2D)materials comprising metal carbides,carbonitrides,and *** materials exhibit intriguing chemical and physical properties,including excellent electrical conductivity and a large surface area,making them attractive candidates for the hydrogen evolution reaction(HER).This scientific review explores recent advancements in MXene-based electrocatalysts for HER *** discusses various compositions,functionalities,and explicit design principles while providing a comprehensive overview of synthesis methods,exceptional properties,and electro-catalytic approaches for H_(2) production via electrochemical ***,challenges and future prospects in designing MXenes-based electrocatalysts with enhanced kinetics are highlighted,emphasizing the potential of incorporating different metals to expand the scope of electrochemical *** review suggests possible efforts for developing advanced MXenes-based electrocatalysts,particularly for efficient H_(2) generation through electrochemical water-splitting reactions..

关键词： MXenes Electrocatalyst Water Splitting Hydrogen Generation Clean Energy

Graphene oxide-coated microbottle resonators for relative humidity sensing

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Optoelectronics Letters 2024年第7期20卷 400-405页

作者： Huda Adnan Zain Malathy Batumalay Md Ashadi Md Johari Hazli Rafis abdul Rahim sulaiman Wadi Harun Department of Electrical Engineering Faculty of EngineeringUniversity of MalayaKuala Lumpur 50603Malaysia Faculty of Data Science and Information Technology INTI International UniversityNilai 71800Malaysia1 Faculty of Electrical and Electronic Engineering Technology Universiti Teknikal Malaysia MelakaMelaka 76100Malaysia Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia MelakaMelaka 76100Malaysia

Graphene oxide(GO)is a 2D coating material used to improve fiber optics sensors’response to relative *** resonators(MBRs)have garnered more attention as sensing media *** MBR with a 190μm diameter was coated with ***,tapered fiber light coupling was used to investigate the relative humidity sensing performance in the range of 35—70%RH at 25℃.The MBR showed a higher Q factor before and after GO *** sensitivity of 0.115 dB/%RH was recorded with the 190μm GO-coated MBR sample compared to a sensitivity of 0.022 dB/%RH for the uncoated MBR *** results show that the MBR can be used in fiber optic sensing applications for environmental sensing.

关键词： humidity oxide bottle

High glucose microenvironment and human mesenchymal stem cell behavior

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World Journal of Stem Cells 2024年第3期16卷 237-244页

作者： Muhammad abdul Mateen Nouralsalhin Alaagib Khawaja Husnain Haider Basic Sciences Sulaiman AlRajhi UniversityAlQaseem 52736Saudi Arabia Cellular and Molecular Pharmacology Sulaiman AlRajhi Medical SchoolAl Bukairiyah 51941Saudi Arabia

High glucose(HG)culture conditions in vitro and persistent exposure to hyperglycemia in diabetes patients are detrimental to stem cells,analogous to any other cell type in our *** interferes with diverse signaling pathways,*** target of rapamycin(mTOR)-phosphoinositide 3-kinase(PI3K)-Akt signaling,to impact physiological cellular functions,leading to low cell survival and higher cell apoptosis *** elucidating the underlying mechanism responsible for the apoptosis of adipose tissue-derived mesenchymal stem cells(MSCs),a recent study has shown that HG culture conditions dysregulate mTORPI3K-Akt signaling in addition to mitochondrial malfunctioning due to defective mitochondrial membrane potential(MtMP)that lowers ATP *** organelle-level dysfunction energy-starves the cells and increases oxidative stress and ultrastructural *** of the mitochondrial electron transport chain produces an altered mitochondrial NAD+/NADH redox state as evidenced by a low NAD+/NADH ratio that primarily contributes to the reduced cell survival in *** previous studies have also reported altered mitochondrial membrane polarity(causing hyperpolarization)and reduced mitochondrial cell mass,leading to perturbed mitochondrial *** hostile microenvironment created by HG exposure creates structural and functional changes in the mitochondria,altering their bioenergetics and reducing their capacity to produce *** are significant data,as MSCs are extensively studied for tissue regeneration and restoring their normal functioning in cell-based ***,MSCs from hyperglycemic donors should be cautiously used in clinical settings for cell-based therapy due to concerns of their poor sur-vival rates and increased rates of post engraftment *** hypergly-cemia alters the bioenergetics of donor MSCs,rectifying the loss of MtMP may be an excellent target for future research to restore the normal functioning of MSCs i

关键词： Adipose tissue Apoptosis Bioenergetics Cell survival Cell therapy Hyperglycemia Mitochondria Mesenchymal stem cells Stem cells

Mesenchymal stem cells’“garbage bags”at work:Treating radial nerve injury with mesenchymal stem cell-derived exosomes

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World Journal of Stem Cells 2024年第5期16卷 467-478页

作者： Mazhar Mushtaq Doaa Hussein Zineldeen Muhammad abdul Mateen Khawaja Husnain Haider Department of Basic Sciences Sulaiman AlRajhi UniversityAlbukairiyah 52736AlQaseemSaudi Arabia Medical Biochemistry and Molecular Biology Department Faculty of MedicineTanta UniversityTanta 6632110Egypt

Unlike central nervous system injuries,peripheral nerve injuries(PNIs)are often characterized by more or less successful axonal ***,structural and functional recovery is a senile process involving multifaceted cellular and molecular *** contemporary treatment options are limited,with surgical intervention as the gold-standard method;however,each treatment option has its associated limitations,especially when the injury is severe with a large *** advancements in cell-based therapy and cell-free therapy approaches using stem cell-derived soluble and insoluble components of the cell secretome are fast-emerging therapeutic approaches to treating acute and chronic *** recent pilot study is a leap forward in the field,which is expected to pave the way for more enormous,systematic,and well-designed clinical trials to assess the therapeutic efficacy of mesenchymal stem cell-derived exosomes as a bio-drug either alone or as part of a combinatorial approach,in an attempt synergize the best of novel treatment approaches to address the complexity of the neural repair and regeneration.

关键词： Exosome Mesenchymal stem cells Nerve injury Stem cells Secretome Regeneration

An automatic subdigraph renovation plan for failure recovery of composite semantic Web services

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Frontiers of Computer Science 2013年第6期7卷 894-913页

作者： hadi SABOOHI Sameem abdul KAREEM Department of Artificial Intelligence Faculty of Computer Science and Information Technology University of Malaya Kuala Lumpur 50603 Malaysia

A Web service-based system never fulfills a user＇s goal unless a failure recovery approach exists. It is inevitable that several Web services may either perish or fail before or during transactions. The completion of a composite process relies on the smooth execution of all constituent Web services. A mediator acts as an intermediary between providers and consumers to monitor the execution of these services. If a service fails, the mediator has to recover the whole composite process or else jeopardize achieving the intended goals. The atomic replacement of a perished Web service usually does not apply because the process of locating a matched Web service is unreliable. Even the system cannot depend on the replacement of the dead service with a com- posite service. In this paper, we propose an automatic renova- tion plan for failure recovery of composite semantic services based on an approach of subdigraph replacement. A replacement subdigraph is posed in lieu of an original subdigraph, which includes the failed service. The replacement is done in two separate phases, ofltine and online, to make the recovery faster. The ofitine phase foresees all possible subdigraphs, pre-calculates them, and ranks several possible replacements. The online phase compensates the unwanted effects and executes the replacement subdigraph in lieu of the original subdigraph. We have evaluated our approach during an experiment and have found that we could recover more than half of the simulated failures. These achievements show a significant improvement compared to current approaches

关键词： semantic Web service composite services fail- ure recovery subdigraph replacement

Current Status and Outlook of Porous Zn-based Scaffolds for Bone Applications: A Review

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Journal of Bionic Engineering 2022年第3期19卷 737-751页

作者： abdul Hakim Md Yusop Mokhamad Fakhrul Ulum Ahmed Al Sakkaf hadi Nur Center for Sustainable Nanomaterials Ibnu Sina Institute for Scientific and Industrial ResearchUniversiti Teknologi Malaysia81310Johor BharuMalaysia Faculty of Veterinary Medicine Bogor Agricultural UniversityBogor16680Indonesia School of Mechanical Engineering Universiti Teknologi Malaysia81310Johor BharuMalaysia Center of Advanced Materials for Renewable Energy(CAMRY) Universitas Negeri MalangMalang65145Indonesia

Over the past 5 years,many works have been performed to reveal the potentials of Zinc(Zn)-based materials as temporary bone scaffolds with the expectation that their emergence could address some of the main concerns associated with magnesium-and iron-based *** to the emerging Additive Manufacturing(AM)technology,it facilitates the optimization of the design and production of topological porous Zn-based materials suited for bone *** the studies on the porous Zn-based scaffolds are on the rise,we provide the most current progress in the development of porous Zn-based scaffolds for bone *** impacts of recently developed topological design from the AM as well as the advanced dynamic-flow corrosion on their corrosion,mechanical properties,and in vitro biocompatibility are also ***,we identify a number of research gaps and the challenges encountered in adopting porous Zn-based scaffolds for orthopedic applications and suggest some promising areas for future research.

关键词： Porous Zn Corrosion Mechanical properties In vitro biocompatibility Additive manufacturing

Synthesis,Structure,Photoluminescence and Thermal Expansion of a Rare Earth Formate Oxalate Framework

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Chinese Journal of Structural Chemistry 2018年第2期37卷 262-269页

作者： hadi abdul Nada 李伟冯国强陆培祥 School of Physics Huazhong University of Science and Technology Department of Physics College of Education University of Al-Qadisiya Department of Physics and Mechanical & Electrical Engineering Hubei University of Education

A new lanthanide formate oxalate framework [Eu（C2O4）（HCOO）]n （1） has been synthesized via hydrothermal method and characterized by single-crystal X-ray diffraction （SC-XRD）. The framework crystallizes in the orthorhombic Pnma space group, with a = 7.0984（4）, b = 6.6442（3）, c = 10.6793（6）？, V = 503.68（4）？3, Z = 3, C3HO6Eu, Mr = 285.00 g/mol, Dc = 3.7581 g/cm3, F（000） = 520.3796, μ = 12.413 mm-1, the final R = 0.0264 and wR = 0.0628 for 797 observed reflections with I 〉 2σ（I）. The photoluminescence （PL） measurements reveal the significant red emission of the framework is dominated by the （5D0 → 7F2） electronic transition at 614 nm. Further variable-temperature powder X-ray diffraction （VT-PXRD） indicates that framework 1 shows slight negative thermal expansion （NTE） along the a-axis, and positive thermal expansion （PTE） along the b and c axes.

关键词： formate oxalate framework hydrothermal method photoluminescence thermalexpansion

First Record of the Belemnite Genus Hibolithes from Late Jurassic–Early Cretaceous Turbidites from Malaysia

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Acta Geologica Sinica(English Edition) 2021年第2期95卷 333-341页

作者： Muhammad MURTAZA abdul hadi Abd RAHMAN Joerg MUTTERLOSE Najiatun NAJLA Mazshurraiezal Bin NASIR Department of Earth and Environmental Sciences Hazara UniversityMansehraKhyber Pakhtunkhwa 21120Pakistan Department of Geosciences Universiti Teknologi PETRONAS.Bandar Seri IskandarTronohPerak 31750Malaysia Department of Geology Mineralogy and GeophysicsRuhr-Universitat BochumUniversitatsstrasse 150Bochum 44801Germany

Discovery of the remains of belemnites referred to the Hibolithes *** the Jurassic–Cretaceous Pedawan Formation in Sarawak,on the island of Borneo(Malaysia)comprises four fragments of belemnite *** specimens are characterized by multiple fractures and vein *** fragments measuring about 130 mm are relatively intact,with only part of the alveolar region missing;a third piece represents the middle part of a rostrum,and the fourth specimen is too fragmentary to be assigned to any specific part of the *** on specimen characteristics,a Tithonian–Hauterivian age is *** sedimentary succession that yielded the belemnite material comprises thick shale that reflects the Te division of Bouma *** occurrence of a Hibolithes taxon in the uppermost Jurassic to lowermost Cretaceous Pedawan Formation sediments in Borneo reflects a near to global palaeobiogeographic distribution of this genus.

关键词： invertebrate paleontology Belemnitida Hibolithes turbidites Pedawan Formation Tithonian-Hauterivian Sarawak Borneo

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Evaluation of the toxicity and repellency of tropical plant extract against subterranean termites,Globitermes sulphureus and Coptotermes gestroi

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Information Processing in Agriculture 2018年第3期5卷 298-307页

作者： Noor Hazwani Bakaruddin Hamady Dieng Shaida Fariza sulaiman abdul Hafiz Ab Majid Household&Structural Urban Entomology Laboratory Vector Control Research UnitSchool of Biological SciencesUniversiti Sains Malaysia11800 MindenPenangMalaysia Institute of Biodiversity and Environmental Conservation Universiti Malaysia Sarawak94300 Kota SamarahanSarawakMalaysia School of Biological Sciences Universiti Sains Malaysia11800 MindenPenangMalaysia

The harmful effects of chemical-based termiticides and the increased incidence of termite resistance have resulted in the need for safer and more effective ***,the screening of antitermiticidal activity of naturally-occurring products could possibly hamper an alternative means in termite control *** aims of this study were to determine the toxicity and repellency of ***,***,*** and *** crude extracts against two subterranean termites,*** and *** were conducted by applying varying concentrations of the plant extracts(10,000 ppm,5000 ppm and 500 ppm)on both termite species under laboratory *** extracts exhibited a significant antitermiticidal activity in time-and concentration-dependent manners after 14 days of *** highest mortality of *** and *** were noted in all methanolic extracts of ***,***,***,*** at 10,000 *** repellent activity was also noted in the choice bioassay when both termites were treated with all methanolic extracts at 10,000 ppm.

关键词： Plant extracts Globitermes sulphureus Coptotermes gestroi Mortality Repellency Antitermiticidal activity