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Ultra-thin vertical tft photosensor and photosynapse based on au-doped-graphene under transition metal selenide reaction

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Journal of materials Science & Technology 2024年第16期183卷 215-222页

作者： Ting Kang Adila Rani Wanqi Ren m junaid sultan Nae-Eung Lee Tae Geun Kim School of Electrical Engineering Korea UniversitySeoul 02841South Korea School of Advanced materials Science&Engineering Sungkyunkwan UniversityGyeonggi-do 16419South Korea

The development of artificial photosensitive synapses with high sensitivity and biomimetic properties that combine innovative concepts and neuromorphic architectures is crucial to achieving highly integrated and flexible intelligent visual ***,graphene heterostructure-based photosensitive synaptic transistors have been extensively studied for this ***,compared to traditional transistors,vertical structure thin film transistors(VTFTs)with ultra-short channels and advantages,such as high integration,have yet to be investigated in photosensitive ***,we report an ultra-thin VTFT featuring a graphene/W_(x)Se_(x-1)van der Waals heterostructure that combines photonic and neuromorphic *** demonstrate a VTFT in which the channel layer is formed by covalently bonded W_(x)Se_(x-1)nanomaterials produced by introducing Se atoms on the surface of a tungsten metal thin film deposited via radio-frequency *** structure successfully simulated the main synaptic function,exhib-ited photosensitive synaptic responses to ultraviolet(λ=365 nm)light,and demonstrated highly reliable electrical ***,the incorporation of gold nanoparticles changed the photosensitive synaptic response properties of the graphene/W_(x)Se_(x-1)heterostructure from excitatory to inhibitory,show-ing a responsivity of about∼14 A W-1,which was attributed to the heterojunction interface resonant effects and efficient charge transfer induced by localized surface *** further enabled optical artificial synaptic applications while operating with low voltage spikes and low light *** work provides a novel strategy for integrating and developing biological and nano-electronic systems.

关键词： Ultra-thin Vertical TFT Au nanoparticles Photo sensor Photo responsivity Photo synapse

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Single-cell and spatial omics:exploring hypothalamic heterogeneity

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Neural Regeneration Research 2025年第6期20卷 1525-1540页

作者： muhammad junaid Eun Jeong Lee Su Bin Lim Department of Biochemistry&molecular Biology Ajou University School of MedicineSuwonSouth Korea Department of Biomedical Sciences Graduate School of Ajou UniversitySuwonSouth Korea Department of Brain Science Ajou University School of MedicineSuwonSouth Korea

Elucidating the complex dynamic cellular organization in the hypothalamus is critical for understanding its role in coordinating fundamental body functions. Over the past decade, single-cell and spatial omics technologies have significantly evolved, overcoming initial technical challenges in capturing and analyzing individual cells. These high-throughput omics technologies now offer a remarkable opportunity to comprehend the complex spatiotemporal patterns of transcriptional diversity and cell-type characteristics across the entire hypothalamus. Current single-cell and single-nucleus RNA sequencing methods comprehensively quantify gene expression by exploring distinct phenotypes across various subregions of the hypothalamus. However, single-cell/single-nucleus RNA sequencing requires isolating the cell/nuclei from the tissue, potentially resulting in the loss of spatial information concerning neuronal networks. Spatial transcriptomics methods, by bypassing the cell dissociation, can elucidate the intricate spatial organization of neural networks through their imaging and sequencing technologies. In this review, we highlight the applicative value of single-cell and spatial transcriptomics in exploring the complex molecular-genetic diversity of hypothalamic cell types, driven by recent high-throughput achievements.

关键词： cellular diversity hypothalamus multi-omics single-cell transcriptomics spatial transcriptomics

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Retracing Realistic Disaster Scenarios from Archival Sources:A Key Tool for Disaster Risk Reduction

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International Journal of Disaster Risk Science 2021年第5期12卷 635-648页

作者： Bashir Ahmad Akhtar Alam m.sultan Bhat Khurshid Ahmad Bhat Jeelani Inaam ul Haq Hakim Farooq Ahmad junaid Qadir Department of Geology Nawakadal SchoolSrinagar 190002India Institute for Risk and Disaster Reduction University College LondonWCIE 6BTUK Department of Geography and Regional Development University of KashmirSrinagar 190006India Department of Statistics Chanapora SchoolSrinagar 190015India Department of Geology Aligarh Muslim UniversityAligarh 202002India

Disaster scenarios are constructed by integrating natural hazard phenomena and social science sources of *** profiled 51 natural hazard events of nineteenth century Kashmir that provide insights into the impacts of varying degree of severity that spread through the socioeconomic and political systems,influenced adaptation,and increased the consequences of the resulting *** root cause of these disasters was embedded in the social,natural,and political economic systems of their time,where vulnerabilities overlapped and interacted periodically with successive colonial regimes and acted as tipping *** combined effect of successive colonial regimes,inept administration,rigid political economy,and natural hazards made the situation go from bad to worse and reduced Kashmir to the depths of distress and *** the arc of the nineteenth century,a series of disasters led the Kashmiri population to learn how to live with disasters and minimize risk,bringing about the evolution of social and environmental *** the natural hazard vulnerability of the Kashmir Valley through archival narratives can help in scenario building to translate findings into formats that reduce related risk now as it did *** resulting information can be useful for regional design,planning,and policy responses to promote disaster risk reduction.

关键词： Disaster risk reduction Historical disasters Kashmir Nineteenth-century disasters Socioeconomic vulnerability

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COVID-19 and comorbidities of hepatic diseases in a global perspective

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World Journal of Gastroenterology 2021年第13期27卷 1296-1310页

作者： Aqsa Ahmad Syeda momna Ishtiaq junaid Ali Khan Rizwan Aslam sultan Ali muhammad Imran Arshad Institute of microbiology University of Agriculture FaisalabadFaisalabad 38040PunjabPakistan Institute of Physiology and Pharmacology University of Agriculture FaisalabadFaisalabad 38040PunjabPakistan

The worldwide outbreak of coronavirus disease 2019(COVID-19) has challenged the priorities of healthcare system in terms of different clinical management and infection transmission, particularly those related to hepatic-disease comorbidities. Epidemiological data evidenced that COVID-19 patients with altered liver function because of hepatitis infection and cholestasis have an adverse prognosis and experience worse health outcomes. COVID-19-associated liver injury is correlated with various liver diseases following a severe acute respiratory syndrome-coronavirus type 2(SARS-CoV-2) infection that can progress during the treatment of COVID-19 patients with or without pre-existing liver disease. SARS-CoV-2 can induce liver injury in a number of ways including direct cytopathic effect of the virus on cholangiocytes/hepatocytes, immune-mediated damage, hypoxia, and sepsis. Indeed, immediate cytopathogenic effects of SARSCoV-2 via its potential target, the angiotensin-converting enzyme-2 receptor, which is highly expressed in hepatocytes and cholangiocytes, renders the liver as an extra-respiratory organ with increased susceptibility to pathological outcomes. But, underlying COVID-19-linked liver disease pathogenesis with abnormal liver function tests(LFTs) is incompletely understood. Hence, we collated COVID-19-associated liver injuries with increased LFTs at the nexus of pre-existing liver diseases and COVID-19, and defining a plausible pathophysiological triad of COVID-19, hepatocellular damage, and liver disease. This review summarizes recent findings of the exacerbating role of COVID-19 in pre-existing liver disease and vice versa as well as international guidelines of clinical care, management, and treatment recommendations for COVID-19 patients with liver disease.

关键词： Liver disease COVID-19 Pathophysiology Epidemiology Prophylaxis

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On Almost Controllability of Dynamical Complex Networks with Noises

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Journal of Systems Science & Complexity 2019年第4期32卷 1125-1139页

作者： CAI Ning HE ming WU Qiuxuan KHAN m.junaid School of Auto mation Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Engineering Research Center of Post Intelligent Equipment Postal Scientific Research and Planning AcademyBeijing 100096China Key Laboratory of China's Ethnic Languages and Information Technology for ministry of Education Northwest Minzu UniversityLanzhou 730030China Rocket Force University of Engineering Xi'an 710025China School of Automation Hangzhou Dianzi UniversityHangzhou 310018China PN Engineering College National University of Sciences and TechnologyIslamabadPakistan

This paper discusses the controllability problem of complex *** is shown that almost any weighted complex network with noise on the strength of communication links is controllable in the sense of Kalman *** concept of... 详细信息

关键词： Communication link complex network controllability weight

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A modified Non-Uniform DmT Transceiver for the Digital Subscriber Line

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China Communications 2007年第4期4卷 40-44页

作者： Sobia Baig m.junaid mughal Faculty of Electronic Engineering GIK Institute of Engineering Sciences & TechnologyTopiDistrict Swabi-23460NWFPPakistan

A Non-Uniform Discrete-multitone(DmT) transceiver can help mitigate the channel-noise enhancement,attributed to zero-forcing equalization (ZFE) technique,by splitting the channel frequency response into octave spaced *** paper presents a novel quantitative analys is of the channel-noise enhancement in different subbands of the Non-Uniform DmT *** order to improve the bit error rate(BER) performance,a modified Non-Uniform DmT transceiver is *** BER performance of the modified Non-Uniform DmT system is compared with that of the Non-Uniform DmT and conventional DmT systems in a Digital Subscriber Line(DSL).

关键词： Non-Uniform DmT wavelet filter banks zero-forcing equalization

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Dissolution mechanism and kinetics ofβ(mg_(17)Al_(12))phases in AZ91 magnesium alloy

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Journal of magnesium and Alloys 2024年第4期12卷 1581-1592页

作者： sultan Alomairy Department of Physics College of ScienceTaif UniversityTaif 21944Saudi Arabia

In this study,the phase transformations,crystallization kinetics and dissolution mechanism ofβphase(mg_(17)Al_(12))in magnesium alloy AZ91 were investigated by optical microscopy,X-ray diffraction,differential scanning calorimetry and differential *** results indicate that this AZ91 alloy undergoes a phase transformation during aging,a discontinuous precipitation of theβphase(mg_(17)Al_(12))at 150℃at the grain boundaries and another continuous at 350℃within the *** activation energy of the dissolution reaction of theβphase(mg_(17)Al_(12))under non-isothermal conditions is 116.781 kJ/mol,while it is 129.7383 kJ/mol under isothermal *** Avrami coefficient,n,relevant for the dissolution kinetics of theβphase(mg_(17)Al_(12))is 1.152 and 1.211 in the non-isothermal and isothermal conditions *** numerical coefficients m and Avrami n are 0.993 and 1.152.

关键词： AZ91 kinetics β(mg_(17)Al_(12)) Activation energy Discontinuous precipitation Continuous precipitation DSC

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Novel Framework for an Intrusion Detection System Using multiple Feature Selection methods Based on Deep Learning

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Tsinghua Science and Technology 2024年第4期29卷 948-958页

作者： A.E.m.Eljialy mohammed Yousuf Uddin sultan Ahmad Department of Information Systems College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAlkharjSaudi Arabia Department of Computer Science College of Computer Engineering and SciencesPrince Sattam Bin Abdulaziz UniversityAlkharjSaudi Arabiaand also with University Center for Research and Development(UCRD)Department of Computer Science and EngineeringChandigarh UniversityPunjabIndia

Intrusion detection systems (IDSs) are deployed to detect anomalies in real time. They classify a network’s incoming traffic as benign or anomalous (attack). An efficient and robust IDS in software-defined networks is an inevitable component of network security. The main challenges of such an IDS are achieving zero or extremely low false positive rates and high detection rates. Internet of Things (IoT) networks run by using devices with minimal resources. This situation makes deploying traditional IDSs in IoT networks unfeasible. machine learning (mL) techniques are extensively applied to build robust IDSs. many researchers have utilized different mL methods and techniques to address the above challenges. The development of an efficient IDS starts with a good feature selection process to avoid overfitting the mL model. This work proposes a multiple feature selection process followed by classification. In this study, the Software-defined networking (SDN) dataset is used to train and test the proposed model. This model applies multiple feature selection techniques to select high-scoring features from a set of features. Highly relevant features for anomaly detection are selected on the basis of their scores to generate the candidate dataset. multiple classification algorithms are applied to the candidate dataset to build models. The proposed model exhibits considerable improvement in the detection of attacks with high accuracy and low false positive rates, even with a few features selected.

关键词： random forest feature selection decision tree software-defined network logistic regression intrusion detection system XGB classifier AdaBoost

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High-temperature deformation behaviour of duplex stainless steel with hard boronised layer

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Journal of Iron and Steel Research International 2021年第2期28卷 244-253页

作者： N.m.sultan I.Jauhari R.Saidan m.F.m.Sabri Department of mechanical Engineering Faculty of EngineeringUniversity MalayaKuala Lumpur 50603Malaysia

In order to understand the high-temperature deformation behaviour of alloy having hard surface layer,thermo-mechanically treated duplex stainless steel(DSS)is boronised for 0.75-6 h at 1223 K and subsequently deformed under compression mode at the same temperature under strain rate condition of 1×10^(-3),2×10^(-4) and 6×10^(-5) s^(-1) until strain of *** substrate microstructure is almost isotropic with grain size after boronising with layer thickness between 1.61 and 2.74μm.X-ray diffraction results confirm the formation of boride on DSS *** surface hardness of DSS increases from 387 to 1000-2400 HV after *** boronised layer with thickness of 20-40μm is formed at DSS *** results show that the flow stress of the deformation increases with the strain rate and boronising *** the boronised samples,the flow stress range is between 5 and 89 *** determine the actual effect of the boronised layer on the flow stress,the results are also compared with those from un-boronised samples having similar *** results suggest that at a constant grain size,even with the hardest layer,the effect of hard surface layer on the flow stress almost could be negligible when the deformation rate is slow,but at faster deformation rate,even in the layer with the least hardness,the flow stress shows a significant *** is also observed that the hard boride surface disintegration could be avoided at a sufficiently low deformation flow stress that could be attributed to superplasticity.

关键词： High-temperature deformation Superplasticity Duplex stainless steel Hard boride layer Surface integrity Grain size effect Strain rate effect

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Effect of layer sliding on the interfacial electronic properties of intercalated silicene/indium selenide van der Waals heterostructure

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Communications in Theoretical Physics 2022年第3期74卷 112-118页

作者： masood Yousaf m W Younis Ahmed S Jbara m junaid Iqbal Khan G murtaza m A Saeed Department of Physics Division of Science and TechnologyUniversity of EducationLahore54770Pakistan Department of Chemistry University of Management and TechnologyC-IIJohar TownLahore54770Pakistan mathematics Department College of Education for Pure ScienceAl-Muthanna UniversitySamawah66001Iraq Laboratory of Theoretical and Experimental Physics Department of PhysicsBahauddin Zakariya UniversityMultan60800Pakistan materials modelling Lab Department of PhysicsIslamia College PeshawarKPPakistan Department of mathematics&Natural Sciences Prince Mohammad Bin Fahd UniversityP.O.Box 1664Alkhobar 31952Saudi Arabia

methods capable of tuning the properties of van der Waals(vdW)layered materials in a controlled and reversible manner are highly *** electronic properties of two-dimensional vdW heterostructure consisting of silicene and indium selenide(InSe)have been calculated using density functional theory-based computational ***,in order to vary the aforementioned properties,silicene is slid over a InSe layer in the presence of Li *** intercalation of the heterostructure,the buckling parameter associated with the corrugation of silicene decreases from 0.44A to 0.36A,whereas the InSe structure remains *** energy scans reveal a significant increase in the sliding energy barrier for the case of intercalated heterostructure as compared with the unintercalated *** sliding of the silicene encounters the maximum energy barrier of 0.14 *** analysis shows the noteworthy differences between calculated in-plane and out-of-plane part of dielectric function.A variation of the planar average charge density difference,dipole charge transfer and dipole moment have been discussed to elucidate the usability spectrum of the *** employed approach based on intercalation and layer sliding can be effectively utilized for obtaining next-generation multifunctional devices.

关键词： vdW heterostructure intercalation tuning of properties layer sliding interfacial electronic properties

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