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Metallized siligraphene nanosheets （SiC7） as high capacity hydrogen storage materials

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Nano Research 2018年第7期11卷 3802-3813页

作者： Syeda R. Naqvi tanveer hussain Wei Luo Rajeev Ahuja Condensed Matter Theory Group Department of Physics and Astronomy Box 516 Uppsala University S-75120 Uppsala Sweden Applied Materials Physics Department of Materials and Engineering Royal Institute of Technology (ICFH) S-10044 Stockholm Sweden Centre for Theoretical and Computational Molecular Science Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane Old 4072 Australia

A planar honeycomb monolayer of siligraphene （SIC7） could be a prospective medium for clean energy storage due to its light weight, and its remarkable mechanical and unique electronic properties. By employing van der Waals- induced first principles calculations based on density functional theory （DFT）, we have explored the structural, electronic, and hydrogen （H2） storage characteristics of SiC7 sheets decorated with various light metals. The binding energies of lithium （Li）, sodium （Na）, potassium （K）, magnesium （Mg）, calcium （Ca）, scandium （Sc）, and titanium （Ti） dopants on a SiC7 monolayer were studied at various doping concentrations, and found to be strong enough to counteract the metal clustering effect. We further verified the stabilities of the metallized SiC7 sheets at room temperature using ab initio molecular dynamics （MD） simulations. Bader charge analysis revealed that upon adsorption, due to the difference in electronegativity, all the metal adatorns donated a fraction of their electronic charges to the SiC7 sheet. Each partially charged metal center on the SiC7 sheets could bind a maximum of 4 to 5 H2 molecules. A high H2 gravimetric density was achieved for several dopants at a doping concentration of 12.50%. The H2 binding energies were found to fall within the ideal range of 0.2-0.6 eV. Based on these findings, we propose that metal-doped SiC7 sheets can operate as efficient H2 storage media under ambient conditions.

关键词： dean energy functionalization binding characteristics dopants

Moirépatterns arising from bilayer graphone/graphene superlattice

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Nano Research 2020年第4期13卷 1060-1064页

作者： Hu Li Raffaello Papadakis tanveer hussain Amir Karton Jiangwei Liu Key Laboratory of High Efficiency and Clean Mechanical Manufacture School of Mechanical EngineeringShandong UniversityJinan 250061China School of Electrical and Electronic Engineering University of ManchesterM139PL ManchesterUK Department of Chemistry Angstrdm LaboratoryUppsala University75121 UppsalaSweden School of Molecular Sciences University of Western AustraliaWA6009 PerthAustralia

Moirépatterns from two-dimensional(2D)graphene heterostructures assembled via van der Waals interactions have sparked considerable interests in physics with the purpose to tailor the electronic properties of *** we report for the first time the observation of moire patterns arising from a bilayer graphone/graphene superlattice produced through direct single-sided hydrogenation of a bilayer graphene on *** to pristine graphene,the bilayer superlattice exhibits a rippled surface and two types of moire patterns are observed:triangular and linear moire patterns with the periodicities of 11 nm and 8-9 nm,*** moire patterns are revealed from atomic force microscopy and further confirmed by following fast Fourier transform(FFT)*** functional theory(DFT)calculations are also performed and the optimized lattice constants of bilayer superlattice heterostructure are in line with our experimental *** findings show that well-defined triangular and linear periodic potentials can be introduced into the graphene system through the single-sided hydrogenation and also open a route towards the tailoring of electronic properties of graphene by various moirépotentials.

关键词： Moire patterns graphone/graphene superlattice atomic force microscopy triangular pattern linear pattern

τ-Access Policy:Attribute-Based Encryption Scheme for Social Network Based Data Trading

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China Communications 2021年第8期18卷 183-198页

作者： Shamsher Ullah Lan Zhang Muhammad Wasif Sardar Muhammad tanveer hussain School of Software Northwestern Polytechnical UniversityXi’an 710072ShaanxiChina School of Computer Science and Technology University of Science and Technology of China Hefei 230026AnhuiChina Department of Electronics and Electrical Systems University of LahorePunjab54000Pakistan School of Science Department of MathematicsUniversity of Management and TechnologyLahore54770Pakistan.

The rapid development of social technology has replaced physical interaction in the trading *** implication of this technology is to provide access to the right information at the right *** drawback of these technologies is that the eavesdropper can remove the user from the network and can create proxy *** this paper,we discuss how a social network overcome and prevent these data trading *** maintain the security of data trading,we applied ABE technique based on DBDH to secure data trading *** proposedτ-access policy scheme provides the best solution for the betterment of data trading network in terms of ***τ-access policy scheme,the users can encrypt and decrypt Private Transactions Information(PTI)using our proposedτ-access *** security properties ofτ-access policy are data confidentiality,data integrity,authenticity,non-repudiation,and *** efficiency of our scheme is 77.73%,which is more suitable for data trading markets and trading strategies.

关键词： ABE privacy integrity data trading PTI τ-access policy

CuO/Co_(3)O_(4)Bifunctional Catalysts for Electrocatalytic 5-Hydroxymethylfurfural Oxidation Coupled Cathodic Ammonia Production

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Energy & Environmental Materials 2024年第5期7卷 255-262页

作者： Li Zhang Peiyue Jin Ze Wu Bo Zhou Junchang Jiang Aomeng Deng Qiuyue Li tanveer hussain Yiqiong Zhang Hanwen Liu Shuangyin Wang College of Materials Science and Engineering Changsha University of Science and TechnologyChangsha 410114China School of Chemical Engineering Xiangtan UniversityXiangtan 411105China State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China School of Science and Technology University of New EnglandArmidaleNSW 2351Australia WA School of Mines MineralsEnergy and Chemical Engineering(WASM-MECE)Curtin UniversityPerthWA 6102Australia

The electrochemical coupling of biomass oxidation and nitrogen conversion presents a potential strategy for high value-added chemicals and nitrogen ***,in this work,CuO/Co_(3)O_(4)with heterogeneous interface is successfully constructed as a bifunctional catalyst for the electrooxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and the electroreduction of nitrate to ammonia(NH_(3)).The open-circuit potential spontaneous experiment shows that more 5-hydroxymethylfurfural molecules are adsorbed in the Helmholtz layer of the CuO/Co_(3)O_(4)composite,which certifies that the CuO/Co_(3)O_(4)heterostructure is conducive to the kinetic adsorption of *** situ electrochemical impedance spectroscopy further shows that CuO/Co_(3)O_(4)has faster reaction kinetics and lower reaction potential in oxygen evolution reaction and 5-hydroxymethylfurfural electrocatalytic ***,CuO/Co_(3)O_(4)also has a good reduction effect on NO_(3)^(-).The ex-situ Raman spectroscopy shows that under the reduction potential,the metal oxide is reduced,and the generated Cu_(2)O can be used as a new active site for the reaction to promote the electrocatalytic conversion of NO_(3)^(-)to NH_(3) *** work provides valuable guidance for the synthesis of value-added chemicals by 5-hydroxymethylfurfural electrocatalytic oxidation coupled with NO_(3)^(-)while efficiently producing NH_(3).

关键词： 5-hydroxymethylfurfural oxidation ammonia production bifunctional catalyst CuO/Co_(3)O_(4) electrocatalyst

Genomic analysis of indigenous goats in Southwest Asia reveals evidence of ancient adaptive introgression related to desert climate

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Zoological Research 2023年第1期44卷 20-29页

作者： Hojjat Asadollahpour Nanaei Yudong Cai Akil Alshawi Jiayue Wen tanveer hussain Wei-Wei Fu Nai-Yi Xu Abdulameer Essa Johannes ALenstra Xihong Wang Yu Jiang Key Laboratory of Animal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYanglingShaanxi 712100China Department of Internal and Preventive Medicine College of Veterinary MedicineUniversity of BaghdadIraqi Ministry of Higher Education and Scientific ResearchBagdad 10090Iraq Department of Molecular Biology Virtual University of PakistanLahore 54000Pakistan Animal Genetics Resources Department Directorate of Animal Resourcesthe Ministry of Iraqi AgricultureBaghdad 10081Iraq Faculty of Veterinary Medicine Utrecht University3508 TD UtrechtThe Netherlands

Understanding how evolutionary pressures related to climate change have shaped the current genetic background of domestic animals is a fundamental pursuit of biology. Here, we generated wholegenome sequencing data from native goat populations in Iraq and Pakistan. Combined with previously published data on modern, ancient(Late Neolithic to Medieval periods), and wild Capra species worldwide, we explored the genetic population structure, ancestry components, and signatures of natural positive selection in native goat populations in Southwest Asia(SWA). Results revealed that the genetic structure of SWA goats was deeply influenced by gene flow from the eastern Mediterranean during the Chalcolithic period, which may reflect adaptation to gradual warming and aridity in the region. Furthermore, comparative genomic analysis revealed adaptive introgression of the KITLG locus from the Nubian ibex(C. nubiana) into African and SWA goats. The frequency of the selected allele at this locus was significantly higher among goat populations located near northeastern Africa. These results provide new insights into the genetic composition and history of goat populations in the SWA region.

关键词： Goat Adaptation KITLG Southwest Asia Nubian ibex

LncRNA GTL2 regulates myoblast proliferation and differentiation via the PKA-CREB pathway in Duolang sheep

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Zoological Research 2024年第6期45卷 1261-1275页

作者： Qian Chen Jing-Jing Bao He-Chun Zhang Chang Huang Qian Zhao Ya-Bin Pu Lin Jiang Adel Hosseiny Muhammad Ibrahim tanveer hussain Xiao-Hong He Yue-Hui Ma Qian-Jun Zhao Institute of Animal Science Chinese Academy of Agricultural Sciences(CAAS)Beijing 100193China Chaoyang Chaomu Breeding Farm Co. Ltd.ChaoyangLiaoning 122629China Department of Animal Breeding Desert Research CenterCairo 11435Egypt Department of Biological Sciences Virtual University of PakistanLahore 54000Pakistan

Long non-coding RNAs(lncRNAs),which are RNA molecules longer than 200 nucleotides that do not encode proteins,are implicated in a variety of biological processes,including growth and *** research into the role of lnc RNAs in skeletal muscle development,the regulatory mechanisms governing ovine skeletal muscle development remain *** this study,we analyzed the expression profiles of lnc RNAs in skeletal muscle from 90-day-old embryos(F90),1-month-old lambs(L30),and 3-year-old adult sheep(A3Y) using RNA *** total,4738 lnc RNAs were identified,including 997 that were differentially ***-time series expression miner analysis identified eight significant expression profiles and a subset of lnc RNAs potentially involved in muscle *** Encyclopedia of Genes and Genomes enrichment analysis revealed that the predicted target genes of these lnc RNAs were primarily enriched in pathways associated with muscle development,such as the c AMP and Wnt signaling ***,the expression of lnc RNA GTL2 was found to decrease during muscle ***,GTL2 was highly expressed during the differentiation of skeletal muscle satellite cells(SCs) and was shown to modulate ovine myogenesis by affecting the phosphorylation levels of PKA and ***,GTL2 was found to regulate both the proliferation and differentiation of SCs via the PKACREB signaling ***,this study provides a valuable resource and offers novel insights into the functional roles and regulatory mechanisms of lnc RNAs in ovine skeletal muscle growth and development.

关键词： Skeletal muscle LncRNA Skeletal muscle satellite cells Sheep PKA-CREB pathway

Enhancing Dielectric and Mechanical Behaviors of Hybrid Polymer Nanocomposites Based on Polystyrene,Polyaniline and Carbon Nanotubes Coated with Polyaniline

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Chinese Journal of Polymer Science 2016年第12期34卷 1500-1509页

作者： tanveer ul Haq Zia Ahmad Nawaz Khan Majid hussain Ibrar Hassan Iftikhar hussain Gul Department of Materials Engineering School of Chemical and Materials EngineeringNational University of Sciences and Technology

The dielectric and mechanical properties of hybrid polymer nanocomposites of polystyrene/polyaniline/carbon nanotubes coated with polyaniline （pCNTs） have been investigated using impedance analyzer and extensometer. The blends of PS/PANI formed the heterogeneous phase separated morphology in which pCNTs are dispersed uniformly. The incorporation of a small amount of pCNTs into the blend of PS/PANI has remarkably increased the dielectric properties. Similarly, the AC conductivity of PS/PANI is also increased five orders of magnitude from 1.6 × 10^-10 to 2.0×10^-5 ***-1 in the hybrid nanocomposites. Such behavior of hybrid nanocomposites is owing to the interfacial polarization occurring due to the presence of multicomponent domains with varying conductivity character of the phases from insulative PS to poor conductor PANI to highly conductive CNTs. Meanwhile, the tensile modulus and tensile strength are also enhanced significantly up to 55% and 160%, respectively, without much loss of ductility for three phase hybrid nanocomposites as compared to the neat PS. Thereby, the hybrid nanocomposites of PS/PANI/pCNTs become stiffer, stronger and tougher as compared to the neat systems.

关键词： Nanocomposites Carbon nanotubes Dielectric behavior Mechanical properties Polystyrene.

Parameter evaluation for soil erosion estimation on small watersheds using SWAT model

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International Journal of Agricultural and Biological Engineering 2019年第1期12卷 96-108页

作者： Fiaz hussain Ghulam Nabi Ray-Shyan Wu Bashir hussain tanveer Abbas Department of Civil Engineering National Central UniversityTaiwan 32001China PMAS-Arid Agriculture University Rawalpindi 46000 Pakistan Centre of Excellence in Water Resources Engineering University of Engineering and TechnologyLahore 54890Pakistan Soil and Water Conservation Research Institute(SAWCRI)Chakwal Chakwal 48800Pakistan

This research was undertaken for the evaluation of soil erosion using the semi-distributed basin scale SWAT model for four subcatchments of the Dhrabi River Catchment(DRC),which is located in the Pothwar Plateau *** subcatchments(catchment-25 and-31)are characterized by gullies while the other two(catchment-27 and-32)are managed with terraced landuse *** performance of the model was satisfactory with coefficient of determination(R^(2))=0.67 to 0.91 and Nash-Sutcliffe efficiency(ENS)=0.54 to 0.85 for both surface runoff and sediment yield during the calibration(2009-2010)and validation(2011)*** PUSLE factor was found to be the most sensitive parameter during model *** was observed that all of the rainfall-runoff events occurred during the monsoon season(June to September).The estimated annual sediment loss ranged from 2.6 t/hm^(2) to 31.1 t/hm^(2) over the duration of the simulation period for the non-terraced catchments,in response to annual precipitation amounts that were between 194.8 mm to 579.3 *** contrast,the predicted annual sediment levels for the terraced catchments ranged from 0.52 t/hm^(2) to 10.10 t/hm^(2) due to similar precipitation *** terraced catchments resulted in 4 to 5 times lower sediment yield as compared to non-terraced *** results suggest that there is a huge potential for terraces to reduce soil erosion in the DRC specifically and Pothwar area generally,which have proven to be an efficient approach to establishing soil and water conservation structures in this region.

关键词： SWAT modeling sediment yield Modified version of Universal Soil Loss Equation(MUSLE) calibration validation parameter evaluation small watersheds

Financial inclusion and carbon emissions in Asia:Implications for environmental sustainability

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Economic and Political Studies 2024年第1期12卷 88-104页

作者： Shahzad hussain tanveer Ahmad Sabeeh Ullah Ajid Ur Rehman Syed Jawad hussain Shahzad Department of Business Administration Rawalpindi Women UniversityRawalpindiPakistan Institute of Business Studies Kohat University of Science and TechnologyKohatPakistan Institute of Business and Management Sciences Faculty of Management and Computer SciencesThe University of AgriculturePeshawarPakistan NUST Business School National University of Sciences and TechnologyIslamabadPakistan Finance Control and Law DepartmentMontpellier Business SchoolMontpellierFrance

This study explores how carbon emissions are affected by financial *** a balanced panel data set of 26 Asian countries,we compute a composite index,through the principal component analysis(PCA)technique,of financial inclusion based on a set of attributes related to financial *** main analysis also delineates the subsamples of developed and developing Asian *** results reveal a long(short)-run positive(negative)impact of financial inclusion on carbon emissions across the Asian *** finding is also true for the developed country subsample,implying nonlinearity in shortand long-run *** the developing countries,a more pronounced long-run positive impact compared to developed countries is ***,the pairwise causality test results indicate the existence of bi-directional causality between financial inclusion and carbon *** findings have important policy implications,especially in the context of the strategic integration of financial inclusion and climate change strategies.

关键词： Financial inclusion CO_(2) emissions climate change sustainable development Asian countries