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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

Evaluation of model generalization for growing plants using conditional learning

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Artificial Intelligence in Agriculture 2022年第1期6卷 189-198页

作者： hafiz Sami Ullah abdul Bais Electronic Systems Engineering Faculty of Engineering and Applied ScienceUniversity of ReginaReginaSaskatchewanCanada

This paper aims to solve the lack of generalization of existing semantic segmentation models in the crop and weed segmentation *** compare two training mechanisms,classical and adversarial,to understand which scheme works best for a particular encoder-decoder *** use simple U-Net,SegNet,and DeepLabv3+with ResNet-50 backbone as segmentation *** models are trained with cross-entropy loss for classical and PatchGAN loss for adversarial *** adopting the Conditional Generative Adversarial Network(CGAN)hierarchical settings,we penalize different Generators(G)using PatchGAN Discriminator(D)and L1 loss to generate segmentation *** generalization is to exhibit fewer failures and perform comparably for growing plants with different data *** utilize the images from four different stages of sugar *** divide the data so that the full-grown stage is used for training,whereas earlier stages are entirely dedicated to testing the *** conclude that U-Net trained in adversarial settings is more robust to changes in the *** adversarially trained U-Net reports 10%overall improvement in the results with mIOU scores of 0.34,0.55,0.75,and 0.85 for four different growth stages.

关键词： Weed detection Semantic segmentation Adversarial training Late germination Sugar beet Crop segmentation Growing plants Domain change

Specific Capacitance and Cyclic Stability of Graphene Based Metal/Metal Oxide Nanocomposites:A Review

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Journal of Materials Science & Technology 2015年第7期31卷 699-707页

作者： abdul Waheed Anwar abdul Majeed Nadeem Iqbal Wasi Ullah Ahmad Shuaib Usman Ilyas Fozia Bibi hafiz Muhammad Rafique Nanotechnologies Research Centre Department of PhysicsUniversity of Engineering and Technology Under Graduate Block/School of Physical Sciences University of the Punjab Department of Physics University of the Punjab

Graphene has become a worldwide admired material among researchers and scientists equally due to its unique richness in mechanical strength, electrical conductivity, optical and thermal properties. Re- searchers have explored that the composite materials based on graphene and metal/metal oxide nanostructures possess excellent potential for energy storage technologies. In particular, supercapacitors based on such composite materials have engrossed the extreme interest of researchers for its rapid charging/discharging time, safe operation and longer cyclic constancy. Till now, several fabrication techniques for composite materials and their energy storage applications have been explored. Here, specially, we have concentrated on the hottest research progress for the fabrication of graphene oxide and metal/metal oxide nanocomposites. We also emphasized on the characteristics and properties of supercapacitors fabricated using these composite materials. Moreover, our study is focused on the specific capacitance and cyclic stability of various composites to haul out the most efficient material for supercapacitor applications.

关键词： GrapheneMetal/metal oxide nanostructureSupercapacitor

Proteomic analysis of pathogen-responsive proteins from maize stem apoplast triggered by Fusarium verticillioides

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Journal of Integrative Agriculture 2022年第2期21卷 446-459页

作者： hafiz abdul HASEEB ZHANG Jun GUO Yu-shuang GAO Mei-xu GUO Wei Institute of Food Science and Technology Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport ProcessMinistry of Agriculture and Rural AffairsBeijing 100193P.R.China Key Laboratory of Molecular Genetics China National Tobacco CorporationGuizhou Institute of Tobacco ScienceGuiyang 550081P.R.China

During the attack of a pathogen, a variety of defense-associated proteins are released by the host plant in the apoplast to impede the perceived attack. This study utilized the mass spectrometry(LC-MS/MS) and label-free quantification method to analyze the apoplastic fluid(APF) from maize stalk and identified the proteins responsive to the Fusarium verticillioides infection. We have identified 742 proteins, and among these, 119 proteins were differentially accumulated(DAPs), i.e., 35 up-regulated, 18 down-regulated, and 66 proteins were only induced by the pathogen infection. The differentially accumulated proteins were analyzed for their Gene Ontology(GO) and Kyoto Encyclopedia of Gene and Genomes(KEGG) pathway enrichment. The highly enriched Biological Process(BP) term was the L-serine biosynthesis process, whereas the most enriched Molecular Function(MF) term was the cysteine-type endopeptidase inhibitor activity. It was also found that the pathways related to the biosynthesis of amino acid, biosynthesis of secondary metabolites, protein processing in the endoplasmic reticulum, and carbohydrate metabolic pathways were significantly enriched. Moreover, 61 out of 119 differentially accumulated proteins were predicted as secretory proteins. The secretory pathways analysis showed that a greater number of proteins were secreted through the conventional secretion system compared to the unconventional secretion system. The identified secreted proteins were related to a variety of pathways in defense responses including cell redox homeostasis, cell wall modification, signal transduction, carbohydrate metabolism, binding proteins(metal ion binding, RNA binding and heme-binding), maintenance and stabilization of other proteins, indicating a complex response from the plant to the fungal infection. Our data suggested that a number of host proteins belonging to various pathways have been modulated in the apoplastic region.

关键词： apoplastic proteins maize defense response proteome Fusarium verticillioides

A review on promising phytochemical, nutritional and glycemic control studies on Moringa oleifera Lam. in tropical and sub-tropical regions

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Asian Pacific Journal of Tropical Biomedicine 2016年第10期6卷 896-902页

作者： hafiz Irfan Muhammad Mohd Zaini Asmawi Nurzalina abdul Karim Khan Discipline of Pharmacology School of Pharmaceutical Sciences Universiti Sains Malaysia Department of Pharmacology Faculty of Pharmacy University of Sargodha Discipline of Pharmaceutical Technology School of Pharmaceutical Sciences Universiti Sains Malaysia

Plants have provided sources to find novel compounds. These plants are being used as therapeutic purposes since the birth of mankind. The traditional healers normally utilize medicinal plants as crude drugs while scientists using the folk claim as guides to explore medicinal plants. Moringa oleifera is a famous edible plant having therapeutic and nutritive values. The present study was designed to cumulate the research data regarding to what extent, phytochemical, nutritional and glycemic control studies has been explored using its different extracts. The articles indicated that the powder, aqueous, methanol and ethanol extracts of Moringa oleifera(leaves, pods, seeds, stem and root bark) have significant therapeutic herbal potential to treat diabetes mellitus. Collectively, the mechanism behind is intestinal glucose inhibition, insulin release as well as decrease in insulin resistance probably regeneration of b-cells of pancreas, increase in glutathione and reduction in malondialdehyde. Conclusively, this article give descriptive information about antidiabetic effect, claimed marker compounds and proposed antihyperglycemic mechanism of a single plant. It can be suggested a potential herbal source to treat diabetes mellitus as being widely accepted by major population as nutrition and therapeutic agent.

关键词： Antihyperglycemic Aqueous Ethanol Moringa oleifera Antidiabetic

Characterization of Galena and Vein Paragenesis in the Penjom Gold Mine,Malaysia:Trace Elements,Lead Isotope Study and Relationship to Gold Mineralization Episodes

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Acta Geologica Sinica(English Edition) 2015年第6期89卷 1914-1925页

作者： Zakaria ENDUT NG Tham Fatt Jasmi hafiz abdul AZIZ Sebastien MEFFRE Charles MAKOUNDI Department of Geology Faculty of ScienceUniversity Malaya CODES ARC Centre of Excellence in Ore Deposits University of Tasmania

The Penjom Gold Mine is located 30 km from the Bentong-Raub Suture at the western boundary of the Central Belt in Peninsular Malaysia. Gold mineralization hosted within the vein system is associated with pyrite, arsenopyrite, and minor base metals including galena. Trace element and lead isotope analysis was undertaken on nine samples that represent two stages of galena formed during two tectonic events. Both the Pb isotopes and the trace elements show that the first stage galena within the mineralized areas at the footwall has different geochemical characteristics compared with galena in non mineralized areas in the hanging wall, suggesting that galena crystallized from two different ore fluids and probably at two different times. Higher Te, Se and Bi in the galena from the mineralized area may indicate hydrothermal fluids that migrate through the structural conduit and leached out the metal along the pathway that consist of dominant carbonaceous unit. The Pb isotopic ratio composition are transitional between the bulk crustal growth and an upper crustal growth curve, indicating that derivation was from arc rocks associated with continental crust or a crustal source that includes arc volcanic and old continental sedimentary rocks.

关键词： Vein paragenesis galena trace elements lead isotope and gold mineralization

Comparative Thermal Performance in SiO_(2)–H_(2)O and (MoS_(2)–SiO_(2))–H_(2)O Over a Curved Stretching Semi-Infinite Region: A Numerical Investigation

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Computers, Materials & Continua 2021年第1期66卷 947-960页

作者： Basharat Ullah Umar Khan hafiz abdul Wahab Ilyas Khan Dumitru Baleanu Kottakkaran Sooppy Nisar Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences Magurele077125Romania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematics College of Arts and SciencesWadi Aldawaser11991Prince Sattam Bin Abdulaziz UniversityAl KharjSaudi Arabia

The investigation of Thermal performance in nanofluids and hybrid nanofluids over a curved stretching infinite region strengthens its roots in engineering and ***,the comparative thermal analysis in SiO_(2)–H_(2)O and(MoS_(2)–SiO_(2))–H_(2)O is conducted over curved stretching *** model is reduced in the dimensional version via similarity transformation and then treated *** velocity and thermal behavior for both the fluids is decorated against the preeminent *** the analysis,it is examined that the motion of under consideration fluids declines against Fr and.The thermal performance enhances for higher volumetric fraction and.Further,it is noticed that thermal performance prevailed in(MoS_(2)–SiO_(2))–H_(2)O throughout the ***,(MoS_(2)–SiO_(2))–H_(2)O is better for industrial and engineering uses where high heat transfer is required to accomplished different processes of production.

关键词： Thermal performance curved surface SiO_(2)–H_(2)O and(MoS_(2)–SiO_(2))–H_(2)O shear stresses Nusselt number numerical scheme

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

Collaborative impact of bacterial exometabolites governing root microbiota formation

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Stress Biology 2023年第1期3卷 424-427页

作者： hafiz abdul Kareem Xinwei Hao Xihui Shen State Key Laboratory of Crop Stress Biology for Arid Areas Shaanxi Key Laboratory of Agricultural and Environmental MicrobiologyCollege of Life SciencesNorthwest A&F UniversityYanglingShaanxiChina

The majority of the root microbiota formation derives from soil-dwelling *** limited extent of thorough investigation leads to a dearth of knowledge concerning the intricate mechanisms of microbe-microbe interaction implicated in the establishment of root ***,the taxonomic signatures in bacterial inhibition profiles were determined by in vitro testing of 39,204 binary interbacterial ***,findings from genetic and metabolomic studies elucidated that co-functioning of the antimicrobial 2,4-d iacetylphloroglucinol(DAPG)and the iron chelator pyoverdine as exometabolites has significantly contributed to the potent inhibitory activities of the highly antagonistic Pseudomonas brassicacearum *** restoration with a core of Arabidopsis thaliana root commensals showed that these exometabolites possess a root niche-specific function in establishing root competence and inducing anticipated changes in root *** biosynthetic operons are abundant in roots in natural habitats,indicating that these exometabolites co-functioning is an adaptive feature that helps Pseudomonad dominate the root microbiota.

关键词： Pseudomonas Exometabolites Root microbiota Operons Pyoverdine