检索结果-南通市图书馆

Chinese Physics B 2015年第6期24卷 607-612页

作者： tijjani adam U.HAshim Th S.Dhahi Institute of Nano Electronic Engineering(INEE) Universiti Malaysia Perlis(UniMAP) Physics Department College of Education for Pure ScienceBasra University

A functionalized silicon nanowire field-effect transistor （SiNW FET） was fabricated to detect single molecules in the pM range to detect disease at the early stage with a sensitive, robust, and inexpensive method with the ability to provide specific and reliable data. The device was designed and fabricated by indented ash trimming via shallow anisotropic etching. The approach is a simple and low-cost technique that is compatible with the current commercial semiconductor standard CMOS process without an expensive deep reactive ion etcher. Specific electric changes were observed for DNA sensing when the nanowire surface was modified with a complementary captured DNA probe and target DNA through an organic linker （--OCH2CH3） using organofunctional alkoxysilanes （3-aminopropyl） triethoxysilane （APTES）. With this surface modification, a single specific target molecule can be detected. The simplicity of the sensing domain makes it feasible to miniaturize it for the development of a cancer detection kit, facilitating its use in both clinical and non-clinical environments to allow non-expert interpretation. With its novel electric response and potential for mass commercial fabrication, this biosensor can be developed to become a portable/point of care biosensor for both field and diagnostic applications.

关键词： silicon nanowire biosensor specific DNA detection anisotropic etching Si-ash-trimming semi-conductor pH sensor

Zinc Oxide Nano Particles Integrated Kenaf/Unsaturated Polyester BioComposite

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2019年第10期7卷 967-982页

作者： Mohammed Mohammed Bashir O.Betar Rozyanty Rahman Aeshah M.Mohammed Azlin F.Osman Muhammed Jaafar tijjani adam Omar S.Dahham Uda Hashim Nik Z.Noriman Center of Excellence Geopolymer and Green Technology School of Materials EngineeringUniversiti Malaysia PerlisKangarPerlisMalaysia Research Center(NANOCAT) University of MalayaKuala LumpurMalaysia College of Health Solutions.Health North Building Arizona State UniversityArizonaUSA College of Education for Pure Science Ibn-Alhaitham University of BagdadBagdadIraq Faculty of Engineering Technology Universiti Malaysia PerlisKampus Uniciti Alam Sg.ChuchuhPadang Besar(U)PerlisMalaysia Institute of Nano Electronic Engineering Universiti Malaysia PerlisKangarPerlisMalaysia.

Increasing need for materials with special features have brought various new inventions,one of the most promising hope for new material with special features and functionalities is composites ***,this study report an integration of zinc nanoparticles into kenaf/polyester polymer composite to introduce new behavior to the *** composite behaviors were compared for mechanical,thermal,moisture absorption and biodegradability *** Zinc Oxide nanoparticles entrenched in the kenaf/polyestaer composites net structure through chemical bonds between kenaf/ZnO/polyester resin,existence of ZnO significantly influence the mechanical and thermals properties of *** analysis based on(TGA)response revealed the integration of ZnO nanoparticles improved the thermal stability when thermal decomposition temperature beyond 3650 *** thermal cracking decreased with present of ZnO and increase with kenaf content(layers).The modulus,Tensile strength,break at elongation,flexural modulus,flexural strength and impact strength of the composites with higher content kenaf/ZnO nanoparticle are 560 MPa,58MPa,1.8%,1300 PMa,68 MPa and 31 MPa,***,addition of kenaf layers and ZnO results in larger mechanical properties enhancement,the results of the contact angle show improvement in wetting of the fibres with addition of ZnO nanoparticles.

关键词： Polymer composite thermal properties mechanical properties nano-composite biodegradable polymer nano zinc oxide

A Review on the Advancement of Renewable Natural Fiber Hybrid Composites: Prospects, Challenges, and Industrial Applications

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2024年第7期12卷 1237-1290页

作者： Mohammed Mohammed Jawad K.Oleiwi Aeshah M.Mohammed Anwar Ja’afar Mohamad Jawad Azlin F.Osman tijjani adam Bashir O.Betar Subash C.B.Gopinath Center of Excellence Geopolymer&Green Technology(CEGeoGTech) Universiti Malaysia PerlisArau02600Malaysia Faculty of Chemical Engineering Technology Universiti Malaysia Perlis(UniMAP)Arau02600Malaysia Department of Materials Engineering University of TechnologyBaghdad10070Iraq Department of Chemical Materials University of Bagdad College of Education for Pure Science Ibn-AlhaithamBaghdad10001Iraq Department of Computer Techniques Engineering Al-Rafidain University CollegeBaghdad10001Iraq Faculty of Electronics Engineering Technology Universiti Malaysia PerlisKampus Uniciti Alam Sg.ChuchuhPerlis02100Malaysia Research Center(NANOCAT) University of MalayaKuala Lumpur50603Malaysia Institute of Nano Electronic Engineering Universiti Malaysia PerlisPerlis01000Malaysia Center for Global Health Research Saveetha Medical College&HospitalSaveetha Institute of Medical and Technical Sciences(SIMATS)Tamil Nadu602105India

Naturalﬁbre(NFR)reinforced functional polymer composites are quickly becoming an indispensable sustainable material in the transportation industry because of their lightweight,lower cost in manufacture,and adaptability to a wide variety of ***,the major difﬁculties of using theseﬁbres are their existing poor dimensional stability and the extreme *** assessing the mechanical properties(MP)of composites,the interfacial bonding(IB)happening between the NFR and the polymer matrix(PM)plays an incredibly signiﬁcant *** compared to NFR/syntheticﬁbre hybrid composites,hybrid composites(HC)made up of two separate NFR are less prevalent;yet,these hybrid composites also have the potential to be valuable materials in terms of environmental issues.A new dimension to theﬂexibility of composites reinforced with NFR is added by the cost-effective manufacture of hybrid composites utilising *** purpose of this study is to offer an over-view of the keyﬁndings that were presented on hybrid *** emphasis was focused on the factors that inﬂuence the performance of the naturalﬁber composites,diverse approaches to enhancing MP,physical,electri-cal,and thermal characteristics of the *** study in polymer science gains interest for applications in con-struction and automotive industries.

关键词： Renewable naturalﬁber hybrid composites sustainability nanomaterial greener material

Graphene synthesis,fabrication,characterization based on bottom-up and top-down approaches:An overview

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Semiconductors 2022年第6期43卷 8-22页

作者： Agbolade Lukman Olatomiwa tijjani adam Subash C.B.Gopinath Sanusi Yekinni Kolawole Oyeshola Hakeem Olayinka U.Hashim Faculty of Electronic Engineering Technology Universiti Malaysia Perlis02600 ArauPerlisMalaysia Faculty of Chemical Engineering Technology Universiti Malaysia Perlis02600 ArauPerlisMalaysia Institute of Nano Electronic Engineering Universiti Malaysia PerlisPerlisMalaysia Pure and Applied Physics Ladoke Akintola University of TechnologyNigeria Centre of Excellence for Nanobiotechnology and Nanomedicine(CoExNano) Faculty of applied SciencesAIMST UniversitySemeling08100 KedahMalaysia

This study presents an overview on graphene synthesis,fabrication and different characterization techniques utilized in the *** its discovery in 2004 by Andre Geim and Kostya Novoselov several research articles have been published globally to this effect,owing to graphene’s extraordinary,and exclusive characteristics which include optical transparency,excellent thermal,and mechanical *** properties and applications of this two-dimensional carbon crystal composed of single-layered material have created new avenues for the development of high-performance future electronics and technologies in energy storage and conversion for the sustainable ***,despite its potential and current status globally the difficulty in the production of monolayer graphene sheet still ***,this review highlighted two approaches in the synthesis of graphene,which are the top-down and bottom-up approaches and examined the advantages and failings of the methods *** addition,the prospects and failings of these methods are investigated,as they are essential in optimizing the production method of graphene vital for expanding the yield,and producing high-quality graphene.

关键词： two-dimensional material nanomaterial carbon material nanostructure

Skyrmion motion induced by spin-waves on magnetic nanotubes

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第10期33卷 413-418页

作者： tijjani Abdulrazak Xuejuan Liu Zhenyu Wang Yunshan Cao Peng Yan School of Physics and State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610054China Department of Physics Bayero UniversityKano-700006Nigeria School of Healthcare Technology Chengdu Neusoft UniversityChengdu 611844China

We investigate the skyrmion motion driven by spin waves on magnetic nanotubes through micromagnetic *** key results include demonstrating the stability and enhanced mobility of skyrmions on the edgeless nanotube geometry,which prevents destruction at boundaries—a common issue in planar *** explore the influence of the damping coefficient,amplitude,and frequency of microwaves on skyrmion dynamics,revealing a non-uniform velocity profile characterized by acceleration and deceleration *** results show that the skyrmion Hall effect is significantly modulated on nanotubes compared to planar models,with specific dependencies on the spin-wave *** findings provide insights into skyrmion manipulation for spintronic applications,highlighting the potential for high-speed and efficient information transport in magnonic devices.

关键词： ferromagnetic magnetic nanotube Mumax3 software skyrmion spin-wave

Frequency combs based on magnon-skyrmion interaction in magnetic nanotubes

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第8期33卷 505-509页

作者： tijjani Abdulrazak 刘雪娟金哲珺雨曹云姗严鹏 School of Physics and State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of ChinaChengdu 610054China Department of Physics Bayero UniversityKano-700006Nigeria School of Healthcare Technology Chengdu Neusoft UniversityChengdu 611844China

Within the magnonics community,there has been a lot of interests in the magnon–skyrmion *** and skyrmions are two intriguing phenomena in condensed matter physics,and magnetic nanotubes have emerged as a suitable platform to study their complex *** show that magnon frequency combs can be induced in magnetic nanotubes by three-wave mixing between the propagating magnons and *** study enriches our fundamental comprehension of magnon–skyrmion interactions and holds promise for developing innovative spintronic devices and *** frequency comb tunability and unique spectral features offer a rich platform for exploring novel avenues in magnetic nanotechnology.

关键词： ferromagnetic magnetic field magnon Mumax3 software skyrmion

Modulation of Ce-based Catalysts for Boosting Soot Oxidation

在线全文

学校读者我要写书评

暂无评论

Modulation of Ce-based Catalysts for Boosting Soot Oxidation

作者： SULAIMAN tijjani NASIRU 中国石油大学(北京)

学位级别：硕士

Diesel vehicle exhaust emits two major pollutants,namely soot particles and nitrogen and oxygen compounds（NOx）.Soot particles are responsible for the majority of PM2.5in the atmosphere,whereas substances containing nitrogen and oxygen help to create acid rain,photochemical smog,and other environmental ***,it is crucial to regulate and minimize the release of carbon soot particles and nitrogen and oxygen compounds in diesel vehicle emissions to mitigate their adverse effects on the *** diesel vehicle tail gas post-treatment technology,catalysts coated in diesel particle catcher are generally used to oxidize NO to become NO2,and then the strong oxidation performance of NO2 is used to oxidize and eliminate soot *** oxidation reaction is a typical gas（O2,NOx）.The reaction involving the three-phase contact between the solid soot,solid catalyst,and gaseous reactants is essential for the process of soot *** this regard,there are two main approaches to increase the effectiveness of soot *** first way to improve the interaction between catalysts and soot particles is by increasing the surface area of *** the second approach,redox performance of catalyst is enhanced which enables it to undergo reduction and oxidation reactions during the catalytic *** the redox performance of the catalyst can enhance its ability to facilitate the chemical reaction between the soot particles and ***,optimizing the redox performance of catalyst is one of the most important factors that help improve the efficiency of catalysts during *** strategies can lead to an increase in the efficiency of soot *** metal-based nanomaterials have attracted more and more attention due to their superior redox performance and their cheap and easy-to-obtain *** transition metal-based nanomaterials to improve their soot catalytic performance is expected to replace precious m

关键词： Ce-based catalyst Crystal face effect Soot oxidation Synergy effect Active oxygen species

Origin and depositional environments of source rocks and crude oils from Niger Delta Basin: Carbon isotopic evidence

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

China Geology 2020年第4期3卷 602-610页

作者： Abiodun B Ogbesejana Oluwasesan M Bello tijjani Ali Department of Applied Chemistry Federal University Dutsin-MaP.M.B.5001Dutsin-MaKatsina StateNigeria

Thirty-nine crude oils and twenty-one rock samples from Niger Delta Basin,Nigeria have been characterized based on their isotope compositions by elemental analysis-isotope ratio mass spectrometry and gas chromatography-isotope ratio mass *** bulk carbon isotopic values of the whole rock extracts,saturate and aromatic fractions range from–28.7‰to–26.8‰,–29.2‰to–27.2‰and–28.5‰to–26.7‰,respectively while the bulk carbon isotopic values of the whole oils,saturate and aromatic fractions range from–25.4‰to–27.8‰,–25.9‰to–28.4‰and–23.5‰to–26.9‰,*** average carbon isotopic compositions of individual alkanes(nC12-nC33)in the rock samples range from–34.9‰to–28.2‰whereas the average isotopic values of individual n-alkanes in the oils range from–31.1‰to–23.8‰.Theδ13C isotope ratios of pristane and phytane in the rock samples range from–29.2‰to–28.2‰and–30.2‰to–27.4‰respectively while the pristane and phytane isotopic values range from–32.1‰to–21.9‰and–30.5‰to–26.9‰,*** isotopic values recorded for the samples indicated that the crude oils were formed from the mixed input of terrigenous and marine organic matter and deposited under oxic to sub-oxic condition in lacustrine-fluvial/deltaic *** stable carbon isotopic compositions were found to be effective in assessing the origin and depositional environments of crude oils in the Niger Delta Basin.

关键词： Crude oils Source rocks Isotopic compositions Origin Niger Delta Basin Depositional environment Nigeria

Fuzzy Logic Inference Applications in Road Traffic and Parking Space Management

在线全文

学校读者我要写书评

暂无评论

Journal of Software Engineering and Applications 2015年第7期8卷 339-345页

作者： Ahmed tijjani Dahiru Department of Electrical/Electronics Technology School of Technical Education Federal College of Education (Technical) Bichi Kano Nigeria

In modern motoring, many factors are considered to realize driving convenience and achieving safety at a reasonable cost. A drive towards effective management of traffic and parking space allocation in urban centres using intelligent software applications is currently being developed and deployed as GPS enabled service to consumers in automobiles or smartphone applications for convenience, safety and economic benefits. Building a fuzzy logic inference for such applications may have numerous approaches such as algorithms in Pascal or C-languages and of course using an effective fuzzy logic toolbox. Referring to a case report based on IrisNet project analysis, in this paper Matlab fuzzy logic toolbox is used in developing an inference for managing traffic flow and parking allocation with generalized feature that is open for modification. Being that modifications can be done within any or all among the tool’s universe of discourse, increment in the number of membership functions and changing input and output variables etc, the work here is limited within changes at input and output variables and bases of universe of discourse. The process implications is shown as plotted by the toolbox in surface and rule views, implying that the inference is flexibly open for modifications to suit area of application within reasonable time frame no matter how complex. The travel time to the parking space being an output variable in the current inference is recommended to be substituted with distance to parking space as the former is believed to affect driving habits among motorist, whom may require the inference to as well cover other important locations such as nearest or cheapest gas station, hotels, hospitals etc.

关键词： Fuzzy Logic Inference Universe of Discourse Membership Functions Parking Space Traffic Simulations Surface Views Rule Views

The Response of Vegetation Biomass to Soil Properties along Degradation Gradients of Alpine Meadow at Zoige Plateau

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Geographical Science 2020年第3期30卷 446-455页

作者： LIU Miao ZHANG Zhenchao SUN Jian XU Ming MA Baibing tijjani Sadiy Baba CHEN You-jun ZHOU Qingping Synthesis Research Centre of Chinese Ecosystem Research Network Key Laboratory of Ecosystem Network Observation and Model-lingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-environmental SciencesChinese Academy of SciencesBei-jing 100085China Department of Ecology Evolutionand Natural ResourcesSchool of Environmental and Biological SciencesRutgers UniversityNew BrunswickNew Jersey 08901USA The College of Environment and Planning of Henan University Kaifeng 475004China University of Chinese Academy of Sciences Beijing 100049China Institute of Qinghai-Tibetan Plateau Southwest Minzu UniversityChengdu 610041China

Alpine grassland of the Tibetan Plateau has undergone severe degradation, even desertification. However, several questions remain to be answered, especially the response mechanisms of vegetation biomass to soil properties. In this study, an experiment on degradation gradients was conducted in an alpine meadow at the Zoige Plateau in 2017. Both vegetation characteristics and soil properties were observed during the peak season of plant growth. The classification and regression tree model(CART) and structural equation modelling(SEM) were applied to screen the main factors that govern the vegetation dynamics and explore the interaction of these screened factors. Both aboveground biomass(AGB) and belowground biomass(BGB) experienced a remarkable decrease along the degradation gradients. All soil properties experienced significant variations along the degradation gradients at the 0.05 significance level. Soil physical and chemical properties explained 54.78% of the variation in vegetation biomass along the degradation gradients. AGB was mainly influenced by soil water content(SWC), soil bulk density(SBD), soil organic carbon(SOC), soil total nitrogen(STN), and pH. Soil available nitrogen(SAN), SOC and p H, had significant influence on BGB. Most soil properties had positive effects on AGB and BGB, while SBD and p H had a slightly negative effect on AGB and BGB. The correlations of SWC with AGB and BGB were relatively less significant than those of other soil properties. Our results highlighted that the soil properties played important roles in regulating vegetation dynamics along the degradation gradients and that SWC is not the main factor limiting plant growth in the humid Zoige region. Our results can provide guidance for the restoration and improvement of degraded alpine grasslands on the Tibetan Plateau.

关键词： vegetation biomass soil properties degradation gradients structural equation modelling Zoige Plateau