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Volatile organic compounds sensing based on Bennet doubler-inspired triboelectric nanogenerator and machine learning-assisted ion mobility analysis

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Science Bulletin 2021年第12期66卷 1176-1185,M0003页

作者： Jianxiong Zhu Zhongda Sun Jikai Xu rafal d.walczak Jan Adziuban Chengkuo Lee School of Mechanical Engineering.Southeast University Nanjing 211189China department of Electrical and Computer Engineering National University of SingaporeSingapore 117576Singapore Center for Intelligent Sensors and MEMS(CISM) National University of SingaporeSingapore 117576Singapore NUS Suzhou Research Institute(NUSRI) Suzhou 215123China department of Mircroengineering and Photovoltaics Wroclaw University of Science and TechnologyWroclaw 50-370Poland Integrative Sciences and Engineering Programme(ISEP) National University of Singapore.Singapore 119077Singapore

Ion mobility analysis is a well-known analytical technique for identifying gas-phase compounds in fastresponse gas-monitoring ***,the conventional plasma discharge system is bulky,operates at a high temperature,and inappropriate for volatile organic compounds(VOCs)concentration ***,we report a machine learning(ML)-enhanced ion mobility analyzer with a triboelectric-based ionizer,which offers good ion mobility selectivity and VOC recognition ability with a small-sized device and non-strict operating *** on the charge accumulation mechanism,a multi-switched manipulation triboelectric nanogenerator(SM-TENG)can provide a direct current(dC)bias at the order of a few hundred,which can be further leveraged as the power source to obtain a unique and repeatable discharge characteristic of different VOCs,and their mixtures,with a special tip-plate electrode *** to tackle the grand challenge in the detection of multiple VOCs,the ML-enhanced ion mobility analysis method was successfully demonstrated by extracting specific features automatically from ion mobility spectrometry data with ML algorithms,which significantly enhance the detection ability of the SM-TENG based VOC analyzer,showing a portable real-time VOC monitoring solution with rapid response and low power consumption for future internet of things based environmental monitoring applications.

关键词： Machine learning Volatile organic compounds Ion mobility Triboelectric nanogenerator Plasma discharge

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On a novel tracking differentiator design based on iterative learning in a moving window

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Control Theory and Technology 2023年第1期21卷 46-55页

作者： Xiangyang Li rafal Madonski Zhiqiang Gao Senping Tian Key Laboratory of Autonomous Systems and Network Control Ministry of EducationSchool of Automation Science and EngineeringSouth China University of TechnologyGuangzhou 510641China Energy and Electricity Research Center Jinan UniversityZhuhai 519070China department of Electrical and Computer Science Cleveland State UniversityClevelandOH 44115USA

differential signals are key in control engineering as they anticipate future behavior of process variables and therefore are critical in formulating control laws such as proportional-integral-derivative(PId).The practical challenge,however,is to extract such signals from noisy measurements and this difficulty is addressed first by *** in the form of linear and nonlinear tracking differentiator(Td).While improvements were made,Td did not completely resolve the conflict between the noise sensitivity and the accuracy and timeliness of the *** two approaches proposed in this paper start with the basic linear Td,but apply iterative learning mechanism to the historical data in a moving window(MW),to form two new iterative learning tracking differentiators(IL-Td):one is a parallel IL-Td using an iterative ladder network structure which is implementable in analog circuits;the other a serial IL-Td which is implementable digitally on any computer *** algorithms are validated in simulations which show that the proposed two IL-Tds have better tracking differentiation and de-noise performance compared to the existing linear Td.

关键词： Tracking differentiator(Td) Iterative learning Iterative learning tracking differentiator(IL-Td) Active disturbance rejection control(AdRC)-Two-dimensional system(2-d system)

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An Optimal Algorithm for Resource Allocation in d2d Communication

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Computers, Materials & Continua 2023年第4期75卷 531-546页

作者： Shahad Alyousif Mohammed dauwed rafal Nader Mohammed Hasan Ali Mustafa Musa Jabar Ahmed Alkhayyat Research Centre University of MashreqBaghdadIraq College of Engineering Department of Electrical&Electronic EngineeringGulf UniversityAlmasnadKingdom of Bahrain Medical Instrumentation Techniques Engineering Dijlah University CollegeBaghdadIraq department of Pharmacy Al-Mustaqbal University CollegeHilla51001Iraq Computer Techniques Engineering department Faculty of Information TechnologyImam Ja’afar Al-Sadiq UniversityNajaf10023Iraq department of Medical Instruments Engineering Techniques Al-Turath University CollegeBaghdad10021Iraq department of Medical Instruments Engineering Techniques Al-Farahidi UniversityBaghdad10021Iraq College of Technical Engineering The Islamic UniversityNajafIraq

The number of mobile devices accessing wireless networks isskyrocketing due to the rapid advancement of sensors and wireless communicationtechnology. In the upcoming years, it is anticipated that mobile datatraffic would rise even more. The development of a new cellular networkparadigm is being driven by the Internet of Things, smart homes, and moresophisticated applications with greater data rates and latency *** are being used up quickly due to the steady growth of smartphonedevices andmultimedia apps. Computation offloading to either several distantclouds or close mobile devices has consistently improved the performance ofmobile devices. The computation latency can also be decreased by offloadingcomputing duties to edge servers with a specific level of computing ***-to-device (d2d) collaboration can assist in processing small-scaleactivities that are time-sensitive in order to further reduce task delays. The taskoffloading performance is drastically reduced due to the variation of differentperformance capabilities of edge nodes. Therefore, this paper addressed thisproblem and proposed a new method for d2d communication. In thismethod, the time delay is reduced by enabling the edge nodes to exchangedata samples. Simulation results show that the proposed algorithm has betterperformance than traditional algorithm.

关键词： d2d communication resource allocation latency optimization

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Three-dimensional magnetization reconstruction from electron optical phase images with physical constraints

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Science China(Physics,Mechanics & Astronomy) 2024年第11期67卷 122-132页

作者： Boyao Lyu Shihua Zhao Yibo Zhang Weiwei Wang Fengshan Zheng rafal E.dunin-Borkowski Jiadong Zang Haifeng du Anhui Province Key Laboratory of Low-Energy Quantum Materials and devices High Magnetic Field LaboratoryHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China Science Island Branch Graduate School of University of Science and Technology of ChinaHefei 230026China department of Physics and Astronomy University of New HampshireDurham 03824USA department of Physics The City College of New YorkNew York 10031USA Physics Program Graduate Center of the City University of New YorkNew York 10016USA department of Chemistry University of New HampshireDurham 03824USA Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China Spin-X Institute Center for Electron MicroscopySchool of Physics and OptoelectronicsState Key Laboratory of Luminescent Materials and DevicesGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsSouth China University of TechnologyGuangzhou 511442China Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum JülichJülich 52425Germany

The ability to characterize three-dimensional(3d)magnetization distributions in nanoscale magnetic materials and devices is essential to fully understand their static and dynamic magnetic *** contrast techniques in the transmission electron microscope(TEM),such as electron holography and electron ptychography,can be used to record two-dimensional(2d)projections of the in-plane magnetic induction of 3d nanoscale *** the 3d magnetic induction can in principle be reconstructed from one or more tilt series of such 2d projections,conventional tomographic reconstruction algorithms do not recover the 3d magnetization within a sample ***,we use simulations to describe the basis of an improved model-based algorithm for the tomographic reconstruction of a 3d magnetization distribution from one or more tilt series of electron optical phase images recorded in the *** algorithm allows a wide range of physical constraints,including a priori information about the sample geometry and magnetic parameters,to be *** also makes use of minimization of the micromagnetic energy in the loss *** demonstrate the reconstruction of the 3d magnetization of a localized magnetic soliton—a hopfion ring—and discuss the influence of noise,choice of magnetic constants,maximum tilt angle and number of tilt axes on the *** algorithm can in principle be adapted for other magnetic contrast imaging techniques in the TEM,as well as for other magnetic characterization techniques,such as those based on X-rays or neutrons.

关键词： three-dimensional magnetization vector field tomography differentiable programming electron holography micromagnetism

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Bonding effect of liquid magnesium with open-celled carbon foam in interpenetrating phase composite

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Journal of Magnesium and Alloys 2021年第1期9卷 156-165页

作者： Marcin Godzierz Anita Olszowka-Myalska Natalia Sobczak rafal Nowak Patryk Wrze'sniowski Silesian University of Technology Faculty of Materials EngineeringKrasi´nskiego 8 street40-019 KatowicePoland Institute of Metallurgy and Materials Science Polish Academy of SciencesRaymonta 25 streetKrakówPoland Łukasiewicz Foundry Research Institute Zakopia´nska 73 street30-418 KrakówPoland

The issue of bonding formation in liquid metal/open-celled carbon foam(C_(of))systems was examined,taking into account the practical aspects of the synthesis of a new type of Mg-C metal material *** problem is complex due to the strong oxidation and intense evaporation of liquid magnesium,as well as the 3d geometry of the carbon component,where metal transport occurred through the foam cells’*** experiments performed at 700℃ in ceramic crucibles showed that spontaneous carbon foam infiltration by liquid metal is impossible under the applied conditions,either in an air atmosphere coupled with flux protection or under argon *** tests performed in a UHV chamber filled with static pure Ar by a sessile drop method,coupled with non-contact heating and capillary purification at a test temperature of 700℃ directly in the UHV chamber,showed non-wetting behavior of the Mg/C_(of)couple with a correspondingly high contact angle of about 135°.The graphite capillary was then moved down,the liquid drop being slightly pressed into the foam,but these changes did not induce effective foam *** the short contact time for the sessile drop test under an argon atmosphere,SEM+WdS analysis of the solidified Mg/C_(of)couple revealed the formation of an MgO interlayer at the interface,with a thickness of approx.1μ*** experimentally demonstrated presence of oxygen in the carbon foam sample,both before and after its contact with magnesium,points to oxide-type bonding being established between Mg and C_(of).This observation is in a good agreement with previous reports on the interface characterization of magnesium matrix composites reinforced with glassy carbon materials and carbon fibers by stir casting and pressure *** on the findings of this study,a general structural scheme of the bonding process between carbon foam and liquid magnesium,as an important stage in the syntheses of Mg-C composites,was proposed.

关键词： Magnesium matrix composite Open-celled carbon foam Interpenetrating phase composites Wetting Interface

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Influence of Recycling Waste Glass as Fine Aggregate on the Concrete Properties

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Journal of Renewable Materials 2023年第6期11卷 2925-2940页

作者： rafal A.Hadi Suhad M.Abd Hadee Mohammed Najm Shaker Qaidi Moutaz Mustafa A.Eldirderi Khaled Mohamed Khedher department of Civil Engineering Bilad Alrafidain University CollegeDiyala32001Iraq department of Civil Engineering College of EngineeringUniversity of DiyalaDiyala32001Iraq department of Civil Engineering Zakir Husain Engineering CollegeAligarh Muslim UniversityAligarh202002India department of Civil Engineering College of EngineeringUniversity of DuhokDuhok42001Iraq department of Civil Engineering College of EngineeringNawroz UniversityDuhok42001Iraq department of Chemical Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia department of Civil Engineering College of EngineeringKing Khalid UniversityAbha61421Saudi Arabia department of Civil Engineering High Institute of Technological StudiesMrezgua University CampusNabeul8000Tunisia

Recent years have witnessed an increase in the quantity of waste glass(WG)across the *** the fine aggregate with WG is one of the steps toward preserving the natural resources of the environment and creating low-cost *** present study is concerned with replacing fine aggregates with glass powder(GP)at(0%,15%,30%,and 50%).It has studied the fresh and hardened properties(compressive strength,tensile strength,hardened density,and slump)for all the mentioned percent *** findings have shown that all mixtures containing GP gave acceptable slump results within the design limits(2–5 cm)according to ACI standard *** has been observed that increasing the proportion of GP led to a decrease in the weight of ***,replacing GP with sand by 30%has led to an increase in the compressive strength by about 2.4%and 12.45%,and the tensile strength by about 2.5%and 26.54%at 7-and 28-d,respectively in comparison to normal concrete.

关键词： Sustainable concrete glass powder fine aggregate partial replacement

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Journal of Geriatric Cardiology 2018年第11期15卷 657-665页

作者： Aleksandra Stańska dariusz Jagielak Maciej Kowalik Maciej Brzeziński rafal Pawlaczyk Jadwiga Fijalkowska Wojciech Karolak Jan Rogowski Peter Bramlage department of Cardiac and Vascular Surgery Medical University of Gdansk Gdansk Poland department of Radiology Medical University of Gdansk Gdansk Poland Institute far Pharmacology and Preventive Medicine Cloppenburg Germany

Objective To evaluate short- and long-term changes in quality of life (QoL) in patients undergoing transcatheter aortic valve implantation (TAVI) and to assess differences in patient QoL when using the TAVI transaortic (TAVI TAo) approach compared with the transfemoral approach (TAVI TF) and surgical aortic valve replacement (SAVR). Methods Ninety-seven patients were assessed. Thirty-two patients underwent TAVI TAo, 31 underwent TAVI TF and 34 patients underwent SAVR. QoL was assessed using the EQ-5d-3L questionnaire at baseline, after one month and one year. Results Mean patient age was 80 years (range, 61–92 years) and the mean logistic EuroSCORE was 12.45%(range, 1.39%?78.98%). declared health state at baseline was significantly lower in TAVI TF (P d after one month there were no differences between the three groups (P = 0.99). After one year, SAVR patient results of the EQ-5d-3L index value were lower in comparison to both TAVI patient groups (P d significant differences between the results of EQ-5d-3L index value over the one month and one year follow-up (TAVI TAo, P d after one-month and one-year of follow-up in comparison to baseline value. Significant differences were also demonstrated between Visual Analogue Scale values (VAS). Conclusions A significant improvement in QoL was observed in all three patient groups. Regardless of the TAVI approach, EQ-5d-3L and VAS values were significantly increased after one-month and one-year follow up;the SAVR patients however, reported lower health status when compared to the TAVI patients.

关键词： Aortic valve stenosis Aortic valve replacement The elderly Transcatheter aortic valve implantation Quality of life

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Wide-angle digital holography with aliasing-free recording

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Photonics Research 2024年第5期12卷 1098-1106页

作者： rafal KUKOLOWICZ IZABELA GEREJ TOMASZ KOZACKI Institute of Micromechanics and Photonics Warsaw University of Technology02-525 WarsawPoland

High-quality wide-angle holographic content is at the heart of the success of near-eye display *** work proposes the first digital holographic(dH)system enabling recording wide-angle scenes assembled from objects larger than the setup field of view(FOV),which can be directly replayed without 3d deformation in the near-eye *** hologram formation in the dH system comprises free space propagation and Fourier transform(FT),which are connected by a rectangular ***,the object wave propagates in free space to the rectangular ***,the band-limited wavefield is propagated through the single lens toward the camera *** rectangular aperture can take two sizes,depending on which dH operates in off-axis or phase-shifting recording *** integral part of the dH solution is a numerical reconstruction algorithm consisting of two elements:fringe processing for object wave recovery and wide-angle propagation to the object *** second element simulates propagation through both parts of the experimental *** free space part is a space-limited angular spectrum compact space algorithm,while for propagation through the lens,the piecewise FT algorithm with Petzval curvature compensation is *** the experimental part of the paper,we present the wide-angle dH system with FOV25°×19°,which allows high-quality recording and reconstruction of large complex scenes.

关键词： recording angle holographic

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Coronary venous system in cardiac computer tomography: Visualization, classification and role

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World Journal of Radiology 2014年第7期6卷 399-408页

作者： rafal Mlynarski Agnieszka Mlynarska Maciej Sosnowski Unit of Noninvasive Cardiovascular diagnostics Medical University of Silesia Upper-Silesian Cardiology Center department of Electrocardiology Medical University of Silesia Upper-Silesian Cardiology Center 2nd Chair and division of Cardiology Medical University of Silesia Upper-Silesian Cardiology Center

The role of the coronary venous system was underestimated for many *** the last 20 years,a few percutaneous cardiology techniques in which the anatomy of the coronary venous system was significant were developed and are in *** most important seems to be cardiac resynchronization therapy,which is an invasive method for the treatment of heart ***,one of the major problems is the significant anatomical variability of the coronary venous *** description of the selected anatomical structures is only useful in selected cases such as,for example,the obstruction of selected vessels,a huge Thebesian valve,*** 3d images can add significant value;however,their usefulness is limited due to the different points of view that are obtained during intra-operational *** summarizing all of the articles andguidelines,it can be recommended that the visualization of the coronary venous system be performed in certain patients before cardiac *** best option is to use tomography with retrospective gating with the optimal reconstruction of cardiac veins that occurs during the diastolic phases.

关键词： Coronary venous system Coronary sinus Thebesian valve Cardiac computed tomography Cardiac resynchronization therapy Percutaneous mitral annuloplasty

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Azacarbazole n-3 and n-6 polyunsaturated fatty acids ethyl esters nanoemulsion with enhanced efficacy against Plasmodium falciparum

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Bioactive Materials 2021年第4期6卷 1163-1174页

作者： Anna Jaromin Silvia Parapini Nicoletta Basilico Magdalena Zaremba-Czogalla Agnieszka Lewi´nska Agnieszka Zag´orska Maria walczak Bozena Tyliszczak Aleksandra Grzeszczak MarcinŁukaszewicz Łukasz Kaczmarek Jerzy Gubernator department of Lipids and Liposomes Faculty of BiotechnologyUniversity of WroclawWroclawPoland dipartimento di Scienze Biomediche per la Salute Universit`a degli Studi di MilanoMilanItaly dipartimento di Scienze Biomediche Chirurgiche e OdontoiatricheUniversit`a degli Studi di MilanoMilanItaly Faculty of Chemistry University of WroclawWroclawPoland department of Medicinal Chemistry Jagiellonian University Medical CollegeCracowPoland Chair and department of Toxicology Jagiellonian University Medical CollegeFaculty of PharmacyCracowPoland Instytute of Materials Science Cracow University of TechnologyCracowPoland department of Biotransformation Faculty of BiotechnologyUniversity of WroclawWroclawPoland Pharmaceutical Research Institute WarsawPoland

Alternative therapies are necessary for the treatment of malaria due to emerging drug ***,many promising antimalarial compounds have poor water solubility and suffer from the lack of suitable delivery systems,which seriously limits their *** address this problem,we synthesized a series of azacarbazoles that were evaluated for antimalarial activity against d10(chloroquine-sensitive)and W2(chloroquine-resistant)strains of *** most active compound,9H-3-azacarbazole(3),was encapsulated in a novel o/w nanoemulsion consisting of ethyl esters of polyunsaturated fatty acids n-3 and n-6 obtained from flax oil as the oil phase,Smix(Tween 80 and Transcutol HP)and *** formulation was further analyzed using transmission electron microscopy,dynamic light scattering and in vitro and in vivo *** was shown that droplets of the 3-loaded nanosystem were spherical,with satisfactory stability,without cytotoxicity towards fibroblasts and intestinal cell lines at concentrations corresponding to twice the IC50 for ***,the nanoemulsion with this type of oil phase was internalized by Caco-2 ***,pharmacokinetics demonstrated rapid absorption of compound 3(tmax=5.0 min)after intragastric administration of 3-encapsulated nanoemulsion at a dose of 0.02 mg/kg in mice,with penetration of compound 3 to deep *** 3-encapsulated nanoemulsion was found to be 2.8 and 4.2 times more effective in inhibiting the d10 and W2 strains of the parasite,respectively,compared to non-encapsulated *** findings support a role for novel o/w nanoemulsions as delivery vehicles for antimalarial drugs.

关键词： Azacarbazoles Flax oil n-3 and n-6 polyunsaturated fatty acids ethyl esters Nanoemulsion P.falciparum Malaria

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