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Application of functional near-infrared spectroscopy in the healthcare industry:A review

Journal of Innovative Optical Health Sciences 2019年第6期12卷 108-198页

作者： Keum-Shik Hong M.atif Yaqub School of Mechanical Engineering Pusan National University Busan 46241 Republic of Korea Department of Cogno-Mechatronics Engineering Pusan National University Busan 46241 Republic of Korea

Functional near-infrared spectrosoopy(NIRS),a growing neuroimaging modality,has been utilized over the past few decades to understand the neuronal behavior in the *** technique has been used to assess the brain hemodynamics of impaired cohorts as well as *** is a critical technique for patients with inpaired cognitive or motor *** portable nature of the fNIRS system is suitable for frequent monitoring of the patients who exhibit impaired brain *** study comprehensively reviews brain impaired patients:The studies involving patient populations and the diseases discussed in more than 10 works are *** diseases examined in this paper include autism spectrum disorder,attentiondeficit hyperactivity disorder,epilepsy,depressive disorders,anxiety and panic disorder,schizophrenia,mild cognitive impairment,Alzheimer's disease,Parkinson's disease,stroke,and traumatic brain *** each disease,the tasks used for exarmination,NIRS variables,and significant findings on the impairment are *** channel configurations and the regions of interest are also *** the occurrence of symptoms at an earlier stage is vital for better rehabilitation and faster *** paper ilustrates the usability of fNIRS for early detection of inpairment and the usefulness in monitoring the rehabilitation ***,the limitations of the current fNIRS systems(ie,nonexistence of a standard method and the lack of well-established features for classification)and future research directions are *** authors hope that the findings in this paper would lead to advanced breakthrough discoveries in the fNIRS field in the future.

关键词： NIRS brain impairment psychiatric disorder degenerative brain disease brain injury patient

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Combined effects of ambient gas pressures and magnetic field on laser plasma expansion dynamics

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Plasma Science and Technology 2017年第1期19卷 79-84页

作者： atif HUSsaIN Xun GAO Qi LI Zuoqiang HAO Jingquan LIN School of Science Changchun University of Science and Technology Changchun 130022 People＇s Republic of China

In this work,we investigated the influence of air gas pressures on the expansion features of nanosecond laser ablated aluminum plasma in the absence and presence of a nonuniform magnetic field using fast photography.A particular emphasis was given to the plume dynamics（shape,size） with the combined effects of ambient gas pressures and an external magnetic *** expansion,sharpening effect,and hemi-spherical structures of the aluminum plasma were observed without a magnetic field under different gas *** of the resulting plume images with the combined effects of air gas pressures and a magnetic field show significant changes,such as plume splitting,elliptical geometry changes,radial expansion,and plume ***,the total size of the plasma plume with a magnetic field was measured to be smaller than the plasma plume without a magnetic field at several background pressures.

关键词： magnetic field air pressure expansion plume front propagation

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Flexible and reconfigurable radio frequency electronics realized by high-throughput screen printing of vanadium dioxide switches

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Microsystems & Nanoengineering 2020年第1期6卷 369-380页

作者： Weiwei Li Mohammad Vaseem Shuai Yang atif Shamim IMPACT Lab ComputerElectrical and Mathematical Sciences and Engineering(CEMSE)DivisiornKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Kingdom of Saudi Arabia

Smart materials that can change their properties based on an applied stimulus are in high demand due to their suitability for reconfigurable electronics,such as tunable filters or *** particular,materials that undergo a metal–insulator transition(MIT),for example,vanadium dioxide(VO 2)(M),are highly attractive due to their tunable electrical and optical properties at a low transition temperature of 68°*** deposition of this material on a limited scale has been demonstrated through vacuum-based fabrication methods,its scalable application for large-area and high-volume processes is still *** printing can be a viable option because of its high-throughput fabrication process on flexible *** this work,we synthesize high-purity VO 2(M)microparticles and develop a screen-printable VO 2 ink,enabling the large-area and high-resolution printing of VO 2 switches on various *** electrical properties of screen-printed VO 2 switches at the microscale are thoroughly investigated under both thermal and electrical stimuli,and the switches exhibit a low ON resistance of 1.8 ohms and an ON/OFF ratio of more than *** electrical performance of the printed switches does not degrade even after multiple bending cycles and for bending radii as small as *** a proof of concept,a fully printed and mechanically flexible band-pass filter is demonstrated that utilizes these printed switches as reconfigurable *** on the ON and OFF conditions of the VO 2 switches,the filter can reconfigure its operating frequency from 3.95 to 3.77 GHz without any degradation in performance during bending.

关键词： dioxide vanadium bending

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Surface plasmon polariton at the interface of dielectric and graphene medium using Kerr effect

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Chinese Physics B 2018年第11期27卷 522-527页

作者： Bakhtawar Muhammad Haneef B A Bacha H Khan M atif Lab of Theoretical Physics Department of Physics Hazara University Department of Physics University of Malakand

We theoretically investigate the control of surface plasmon polariton（SPP） generated at the interface of dielectric and graphene medium under Kerr nonlinearity. The controlled Kerr nonlinear signal of probe light beam in a dielectric medium is used to generate SPPs at the interface of dielectric and graphene medium. The positive, negative absorption, and dispersion properties of SPPs are modified and controlled by the control and Kerr fields. A large amplification（negative absorption） is noted for SPPs under the Kerr nonlinearity. The normal/anomalous slope of dispersion and propagation length of SPPs is modified and controlled with Kerr nonlinearity. This leads to significant variation in slow and fast SPP propagation. The controlled slow and fast SPP propagation may predict significant applications in nano-photonics, optical tweezers, photovoltaic devices, plasmonster, and sensing technology.

关键词： surface plasmon polariton Kerr nonlinearity graphene

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Screen printing of silver nanowires: balancing conductivity with transparency while maintaining flexibility and stretchability

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npj Flexible Electronics 2019年第1期3卷 106-113页

作者： Weiwei Li Shuai Yang atif Shamim IMPACT Lab ComputerElectrical and Mathematical Sciences and Engineering(CEMSE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

Printing metal nanowires are particularly attractive as compared to conventional coating methods due to the ease of processing,direct patterning,and large-scale fabrication ***,it is still challenging to print metal nanowire patterns that simultaneously have high conductivity,high transparency,flexibility,and *** steps have been taken in this work to balance the transparency and conductivity of the screen-printed flexible and stretchable silver nanowire films,(1)selection of the ink formulation,(2)optimization of the printing parameters,and(3)posttreatment with a *** as-obtained silver nanowire patterns are large-area and demonstrate an ultralow sheet resistance of 1.9 ohm/sq,high transmittance(73%)at the wavelength of 550 nm,and an ultrahigh figure of merit(~136)as compared to the printed silver nanowire electrodes in the *** screenprinted transparent patterns exhibit excellent electrical stability and mechanical repeatability when subjected to 1000 bending cycles with a bending radius of 28 mm and 1000 stretch-release cycles with 10%strain,which makes the transparent patterns suitable for the fabrication of flexible,transparent microwave *** absorption performance of the prepared frequency selective surface absorbers indicates no obvious degradation after various manipulating configurations and multiple bending and stretching *** results are promising enough to make this ink and screen-printing process suitable for many applications of flexible,stretchable,and transparent electronics.

关键词： nanowires silver printing

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On the Complexities of Federating Research Data Infrastructures

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Data Intelligence 2021年第1期3卷 79-87页

作者： atif Latif Fidan Limani Klaus Tochtermann ZBW-Leibniz Information Centre for Economics 24105 Kiel/Neuer Jungfernstieg 2120354 HamburgGermany

Federated Research Data Infrastructures aim to provide seamless access to research data along with services to facilitate the researchers in performing their data management *** our research on Open Science(OS),we have built cross-disciplinary federated infrastructures for different types of(open)digital resources:Open Data(OD),Open Educational Resources(OER),and open access *** each case,our approach targeted only the resource“metadata”.Based on this experience,we identified some challenges that we had to overcome again and again:lack of(i)harvesters,(ii)common metadata models and(iii)metadata mapping *** this paper,we report on the challenges we faced in the federated infrastructure projects we were involved *** structure the report based on the three challenges listed above.

关键词： Metadata Harvesting Repository federation Research data infrastructures

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Numerical and experimental comparison of the vaned diffuser interaction inside the impeller velocity field of a centrifugal pump

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Science China(Technological Sciences) 2011年第2期54卷 286-294页

作者： atif Abdelmadjid BENMANSOUR saad BOIS Gerard DUPONT Patrick Laboratory of Advanced Mechanics FGMGP/USTHBBP32 El Alia16111AlgerAlgeria Laboratory of Mechanics of Lille ENSAM-Lille8 Bd Louis XIV59046LilleFrance Laboratory of Mechanics of Lille EC-LilleBP48 Villeneuve d’Ascq59651LilleFrance

The paper refers to the analysis of interactions between the impeller and the vaned diffuser based on the air model of a radial flow *** study deals with a numerical simulation of the flow for a full 360°entire impeller and *** task is carried out closely under the design operating conditions and for one particular position of the impeller blade with respect to the diffuser *** all the results,the focus is mainly on the flow pattern at the exit part inside the impeller facing the diffuser *** results are compared to the available PIV measurements.

关键词： centrifugal pump impeller vaned diffuser rotor-stator interaction

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Coat-and-print patterning of silver nanowires for flexible and transparent electronics

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npj Flexible Electronics 2019年第1期3卷 149-155页

作者： Weiwei Li Azat Meredov atif Shamim IMPACT Lab ComputerElectrical and Mathematical Sciences and Engineering(CEMSE)DivisionKing Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia.

Silver nanowires(Ag NWs)possess excellent optoelectronic properties,which have led to many technology-focused applications of transparent and flexible *** of these applications require patterning of Ag NWs into desired shapes,for which maskbased and printing-based techniques have been developed and widely ***,there are still several limitations associated to these *** limitations,such as complicated patterning procedures,limited patterning area,and compromised optical transparency,hamper the efficient fabrication of high-performance Ag NW ***,we propose a coat-and-print approach for effectively patterning Ag *** printed a polymer-based ink on the spin-coated Ag NW *** ink acts as a protective layer to help remove excess Ag NWs from the substrate and then dissolves itself into an organic *** this way,we can take advantage of both coating-based techniques(lead to Ag NWs with high transparency)and printing-based techniques(efficiently pattern diverse shapes).The resultant Ag NW patterns exhibit comparable conductivity(sheet resistance:7.1 to 30 Ohm/sq)and transparency(transmittance:84 to 95%atλ=550 nm)to those made by conventional coating *** addition,the patterned Ag NWs exhibit robust mechanical stability and reliability,surviving extensive bending and peeling *** to higher conductivity,efficient patterning ability and inherent transparency,this material system and application method is highly suitable for transparent and flexible *** a proof of concept,this research demonstrates a wide-band antenna,operating in the mm-wave range that includes the 5G communication *** proposed antenna exhibits a wide bandwidth of 26 GHz(from 17.9 GHz to 44 GHz),robust return loss under 1000 cyclic bending(bending radius of 3.5 mm),and decent transparency over the entire visible wavelength(86.8%transmittance atλ=550 nm).This work’s promising results indicate that this method can be adapted for r

关键词： nanowires transparent transparency

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Diffusion Monte Carlo calculations on LaB molecule

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Chinese Physics B 2018年第9期27卷 241-246页

作者： Nagat Elkahwagy atif Ismail S M A Maizet K R Mahmoud Department of Physics Faculty of Science Kafrelsheikh University Kafr El-Sheikh Egypt Department of Physics Faculty of Applied Sciences Umm AI Qura University Makkah Saudi Arabia Department of Physics Faculty of Science Menoufia University Shebin EI-Kom Egypt

Potential energy curves for the lowest electronic states of LaB and LaB- have been calculated by ab initio *** diffusion Monte Carlo method has been employed in combination with three different trial functions. Spectroscopic constants have also been numerically derived for the neutral molecule and compared with the only available theoretical work;^（[19]） however, predictions are provided for the corresponding constants for the anionic species which have not been reported yet. Our calculations suggest the high spin quintet state of LaB as the ground state with the triplet state higher in energy irrespective of the type of the functional used. This suggestion is in good accordance with the previous theoretical results calculated at B3LYP/LANL2DZ level of theory, whereas it contradicts with the prediction based upon B3LYP/SDD calculations in the same study. Moreover, variations of the permanent dipole moments as a function of the internuclear separations for the two electronic states of the neutral molecule have been studied and analyzed.

关键词： potential energy curve lanthanum boride diffusion Monte Carlo dipole moment

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Role of routine lymph node dissection alongside resection ofintrahepatic cholangiocarcinoma: Systematic review and metaanalysis

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World Journal of Gastrointestinal Oncology 2023年第11期15卷 2017-2032页

作者： Mo atif Aditya Borakati Vasileios K Mavroeidis Department of Colorectal Surgery University Hospitals Birmingham NHS Foundation TrustBirmingham B152GWUnited Kingdom Department of HPB and Liver Transplantation Surgery Royal Free Hospital NHS Foundation TrustLondon NW32QGUnited Kingdom Department of HPB Surgery University Hospitals Bristol and Weston NHS Foundation TrustBristol Royal InfirmaryBristol BS28HWUnited Kingdom Department of Academic Surgery Royal Marsden NHS Foundation TrustLondon SW36JJUnited Kingdom

BACKGROUND The global incidence of intrahepatic cholangiocarcinoma(ICCA)is *** to often delayed presentation,only a narrow spectrum of the disease is usually surgically *** more accurately stage the disease,reduce recurrence,and improve overall survival,surgical teams are increasingly performing intraoperative lymph node dissection(LND)as *** procedure has its associated morbidity,while there is no consensus or formal guidelines on its role in this ***,there is a need to better delineate the evidence for performing LND alongside surgical resection of the *** To perform a systematic review and meta-analysis on the role of LND in improving prognostication and survival post-resection of *** We performed a systematic literature search using Pubmed,Medline,Embase,and the Cochrane Library,for all studies involving LND,ICCA,and surgical resection using several keywords,Medical Subject Headings(MeSH)tags,and appropriate *** clinical studies comparing curative intent resection of ICCA with LND vs resection without LND were included,while single-arm case series,studies with insufficient data,and duplicates were *** included all English-language studies from the different academic databases up till early December *** primary outcome measures were set for overall survival(OS)and disease-free survival(DFS).RESULTS This systematic review and meta-analysis included 15 studies that fulfilled the selection criteria comprising 11413 patients with surgically-resectable ICCA,of whom 6424(56.3%)underwent hepatectomy with LND while the remainder underwent hepatectomy *** patients who underwent LND,on average,27.7%of the resected lymph nodes were positive for metastatic ***,the results showed that performing LND did not significantly improve OS or ***,the effect of LND on OS showed a degree of variability by geographical region,in Eastern and Western *** LND is increasingly being perform

关键词： Cholangiocarcinoma Periductal-infiltrating Mass-forming Lymphadenectomy Lymph node metastasis Hepatectomy

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