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Investigation of Laser Induced Breakdown Spectroscopy(LIBS)for the Differentiation of nerve and Gland Tissue-A Possible Application for a Laser Surgery feedback Control Mechanism

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Plasma Science and Technology 2016年第6期18卷 654-660页

作者： f.MEHARI M.ROHDE C.KnIPfER R.KAnAWADE f.KLAMPfL W.ADLER n.OETTER f.STELZLE M.SCHMIDT Clinical Photonics Lab Erlangen Graduate School in Advanced Optical Technologies(SAOT)Friedrich-Alexander-Universitat Erlangen-NurnbergPaul-Gordan-Str.691052 ErlangenGermany Institute of Photonic Technologies Friedrich-Alexander-Universitat Erlangen-NiirnbergKonrad-Zuse-Str.3/591052 ErlangenGermany Department of Oral and Maxillofacial Surgery University Hospital ErlangenFriedrich-Alexander-Universitat Erlangen-NurnbergGliickstrasse 1191054 ErlangenGermany Chair of Biometry and Epidemiology Friedrich-Alexander-Universitat Erlangen-Niirnberg Waldstrabe 691054 ErlangenGermany

Laser surgery provides clean,fast and accurate modeling of ***,the inability to determine what kind of tissue is being ablated at the bottom of the cut may lead to the iatrogenic damage of structures that were meant to be *** this context,nerve preservation is one of the key challenges in any surgical *** example is the treatment of parotid gland pathologies,where the facial nerve（***） and its main branches run through and fan out inside the glands parenchyma.A feedback system that automatically stops the ablation to prevent nerve-tissue damage could greatly increase the applicability and safety of surgical laser *** the present study,Laser Induced Breakdown Spectroscopy（LIBS） is used to differentiate between nerve and gland tissue of an ex-vivo pig animal *** LIBS results obtained in this preliminary experiment suggest that the measured spectra,containing atomic and molecular emissions,can be used to differentiate between the two tissue *** measurements and differentiation were performed in open air and under normal stray light conditions.

关键词： laser induced breakdown spectroscopy plasma chemical composition nerveparotid gland

nano-Enhanced Dairy Scum Biodiesel Blends:Unleashing the Power of Aluminium Oxide for Sustainable and Efficient Engine Performance

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Journal of Thermal Science 2025年第1期 283-302页

作者： Veeranna MODI Prasad B.RAMPURE Sunil Kumar SHETTY Madeva nAGARAL Channa Keshava nAIK n Johar MGM Muhammad Irsyad ABDULLAH Abdullah I.AL-MAnSOUR Shamshad ALAM KLE College of Engineering and Technology ChikodiVisvesvaraya Technological University nitte (Deemed to be University) NMAM Institute of Technology (NMAMIT)Department of Mechanical Engineering Aircraft Research and Design Centre HAL Department of Mechanical Engineering BGS College of Engineering and TechnologyBengaluruAffiliated to Visvesvaraya Technological University Management and Science University Department of Civil Engineering College of EngineeringKing Saud University

This study investigates the effect of aluminium oxide nanoparticlesaddition to biodiesel blends made from dairy milk scum on performance and combustion characteristics of the diesel *** dispersion of Al2O3nanoparticles in B20 blends at different concentrations was done with the help of *** number of blends were prepared for the *** Machine learning algorithms(Random forest（Rf）and CatBoost) was used for the *** results show that in comparison to biodiesel blends without nanoparticles,the kinematic viscosity and density is higher for fuel blends with *** these fuel blends have higher calorific *** blends exhibited reduced Brake Specific fuel Consumption（BSfC） of2.85% than the blends without nano particles(Dairy Scum Methyl Ester Biodiesel 20%+neat Diesel 80%（in volume）,DSMEB20),57.14% less CO,40.8% less hydrocarbon,and increased nOxemissions compared to conventional diesel,contributing to the development of environmentally friendly and renewable biofuel blends with *** B20nP30 is the optimal blend for performance and emission *** study concludes with findings on enhanced Brake Thermal Efficiency（BTE） of 26.29% in 3×10-5（in volume） Al2O3nanoparticle-blended DSME B20 and other DSME B20 fuel blends,emphasizing the importance of optimal nanoparticle *** correlation matrix shows how engine load,efficiency measures（BTE,BSfC）,and emissions（CO,CO2,nOx,Smoke） are connected in complex *** results help us understand the complicated dynamics of engine performance and emission characteristics ***'s diagram for BTE and BSfC shows that CatBoost-based BTE models perform superior to Rf-based models during the training as well as testing *** results were obtained for CO and CO2emission results.

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Carbon nanodots:a new precursor to achieve reactive nanoporous HOPG surfaces

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nano Research 2020年第12期13卷 3425-3432页

作者： Cristina Gutiérrez-Sánchez Emiliano Martínez-Periñán Carlos Busó-Rogero Mónica Revenga-Parra félix Pariente Encarnación Lorenzo Departamento de Química Analítica y Análisis Instrumental Universidad Autónoma de MadridCampus de CantoblancoMadrid28049Spain Institute for Advanced Research in Chemical Sciences(IAdChem) Universidad Autónoma de MadridCampus de CantoblancoMadrid28049Spain IMDEA-nanoscience.faraday 9 Campus Cantoblanco-UAMMadrid28049Spain

In the present work we develop an electrochemical assisted method to form nanopores on the surface of highly oriented pyrolytic graphite(HOPG),which was accomplished by a simple electrochemical route and a scalable nanomaterial,carbon nanodots,without applying high voltages,high temperatures or toxic *** electrodes are in a solution of n-enrich carbon nanodots in acidic media and the potential scans applied on HOPG lead to the formation of a spatially inhomogeneous porous *** diameter of the resulting nanopores can be tuned by controlling the number of electrochemical reduction *** resulting nanoporous surfaces are characterized by atomic force microscopy,Raman spectroscopy,scanning electrochemical microscopy,electrochemical impedance spectroscopy and *** nanoporous HOPG showed high *** the potential of these surfaces to the development of energy storage devices is demonstrated.

关键词： nanoporous highly oriented pyrolytic graphite(HOPG) carbon nanodots supercapacitor

Patterns in the relationship between acute COVID-19/long COVID-19 and quality of life:A cross-sectional study of patients attending a tertiary care hospital in Turkey

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Asian Pacific Journal of Tropical Medicine 2022年第6期15卷 274-282页

作者： Hakan Tuzun Cansu Ozbaş Burkay Budak Gizem Altunay f.n.Baran Aksakal Department of Public Health Faculty of MedicineGazi UniversityAnkaraTurkey

Objective:To determine the change in the quality of life(QoL)of patients who applied to a tertiary outpatient clinic according to their COVID-19 ***:This cross-sectional study comprised 1370 *** form-12(Sf-12),which includes Physical Component Summary(PCS)and Mental Component Summary(MCS)domains,was used to evaluate the *** linear regression models created using PCS-12 and MCS-12 were dependent ***:A total of 19.2% of participants had acute COVID-19,and 8.4%had long *** most common sypmtoms were fatigue(72.6%),headache(42.5%),and joint pain(39.8%)in patients with long *** model including all participants showed that long COVID-19 reduced the QoL in multivariate analysis for both MCS and PCS,while acute COVID-19 had no significant effect on the QoL comparing with those without *** that included participants with COVID-19 showed that long COVID-19 negatively affected the QoL in the multivariate model for PCS-12 and *** that were significant in the multivariate model for those who had long COVID-19 were having a chronic disease and presence of ongoing *** were disadvantaged for PCS-12 and MCS-12 in the multivariate models including all participants,and models including participants who have had *** educational group were disadvantaged for PCS-12 in the multivariate model including all *** group were also disadvantaged for PCS-12 and MCS-12 in the multivariate models including participants who had ***:In studies,acute COVID-19 and long COVID-19 should be treated as separate *** effects of long COVID-19 should be considered when providing and planning health *** effect of gender,and education,on QoL shows that health inequalities continue to be effective during the pandemic period.

关键词： Long COVID-19 Acute COVID-19 Quality of life Pandemic Health ineaqualities

Ameliorating the re/dehydrogenation behaviour of MgH2 by zinc titanate addition

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Journal of Magnesium and Alloys 2023年第6期11卷 2205-2215页

作者： n.A.Ali n.A.Sazelee M.f.Md Din M.M.nasef A.A.Jalil Haizen Liu M.Ismail Energy Storage Research Group Faculty of Ocean Engineering Technology and InformaticsUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Department of Electrical and Electronic Engineering Faculty of EngineeringNational Defence University of MalaysiaKem Sungai BesiKuala LumpurMalaysia Center of Hydrogen Energy Institute of Future EnergyUniversiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia Department of Chemical and Environmental Engineering Malaysia Japan International Institute of TechnologyUniversiti Teknologi MalaysiaJalan Sultan Yahya PetraKuala Lumpur 54100Malaysia faculty of Chemical and Energy Engineering Universiti Teknologi Malaysia81310 UTM Johor BahruJohorMalaysia Guangxi novel Battery Materials Research Center of Engineering Technology State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresSchool of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key Laboratory of featured Metal Materials and Life-cycle Safety for Composite Structures Nanning 530004China

Magnesium hydride(MgH_(2))is the most feasible and effective solid-state hydrogen storage material,which has excellent reversibility but initiates decomposing at high temperatures and has slow kinetics ***,zinc titanate(Zn_(2)TiO_(4))synthesised by the solid-state method was used as an additive to lower the initial temperature for dehydrogenation and enhance the re/dehydrogenation behaviour of MgH_(2).With the presence of Zn_(2)TiO_(4),the starting temperature for the dehydrogenation of MgH_(2)was remarkably lowered to around 290℃–305℃.In addition,within 300 s,the MgH_(2)–Zn_(2)TiO_(4)sample absorbed 5.0 wt.%of H_(2)and 2.2–3.6 wt.%H_(2)was liberated from the composite sample in 30 min,which is faster by 22–36 times than as-milled MgH_(2).The activation energy of the MgH_(2)for the dehydrogenation process was also downshifted to 105.5 k J/mol with the addition of Zn_(2)TiO_(4)indicating a decrease of 22%than as-milled MgH_(2).The superior behaviour of MgH_(2)was due to the formation of Mg Zn_(2),MgO and MgTiO_(3),which are responsible for ameliorating the re/dehydrogenation behaviour of MgH_(2).These findings provide a new understanding of the hydrogen storage behaviour of the catalysed-MgH_(2)system.

关键词： Hydrogen storage Solid-state storage MgH_(2) Additive Zn_(2)TiO_(4)

Effect of airflow on biodrying of gardening wastes in reactors

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Journal of Environmental Sciences 2013年第5期25卷 865-872页

作者： f.J.Colomer-Mendoza L.Herrera-Prats f.Robles-Martínez A.Gallardo-Izquierdo A.B.Pia-Guzmn Department of Mechanical Engineering and Construction (Universidad Jaume I)Jaume 1st University.Ave.Sos Baynat s/nCastellón 12071Spain Biotechnology Multidisciplinary Professional Unit (Instituto Politcnico Nacional)National Politechnic Institute.Ave.Acueduct of Guadalupe s/n Barrio la Laguna TicomnGustavo A.Madero 07340Mxico DF.Mxico

Biodrying consists of reducing moisture by using the heat from aerobic *** parameters that control the process are：aeration,temperature during the process,initial moisture of biowaste,and temperature and relative humidity of the input *** mowing and garden waste from the gardens of the University Jaume I,Castellón（Spain）were used as a *** was performed in 10 reactors with known air volumes from 0.88 to 6.42 L/（min·kg dry weight）.To promote aeration,5 of the reactors had 15% of a bulking agent *** experiment lasted 20 *** the experiments it was found that the bulking agent led to greater weight ***,the increased airflow rate was not linearly proportional to the weight loss.

关键词： biodrying biowaste stabilization aerobic fermentation bulking agent

Application of particle splitting method for both hydrostatic and hydrodynamic cases in SPH

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Acta Mechanica Sinica 2018年第4期34卷 601-613页

作者： W.T.Liu P.n.Sun f.R.Ming A.M.Zhang College of Shipbuilding Engineering Harbin Engineering University

Smoothed particle hydrodynamics（SPH） method with numerical diffusive terms shows satisfactory stability and accuracy in some violent fluid–solid interaction problems. However, in most simulations, uniform particle distributions are used and the multi-resolution, which can obviously improve the local accuracy and the overall computational efficiency, has seldom been applied. In this paper, a dynamic particle splitting method is applied and it allows for the simulation of both hydrostatic and hydrodynamic problems. The splitting algorithm is that, when a coarse（mother） particle enters the splitting region, it will be split into four daughter particles, which inherit the physical parameters of the mother particle. In the particle splitting process,conservations of mass, momentum and energy are ensured. Based on the error analysis, the splitting technique is designed to allow the optimal accuracy at the interface between the coarse and refined particles and this is particularly important in the simulation of hydrostatic cases. finally, the scheme is validated by five basic cases, which demonstrate that the present SPH model with a particle splitting technique is of high accuracy and efficiency and is capable for the simulation of a wide range of hydrodynamic *** particle hydrodynamics（SPH）method with numerical diffusive terms shows satisfactory stability and accuracy in some violent fluid–solid interaction ***,in most simulations,uniform particle distributions are used and the multi-resolution,which can obviously improve the local accuracy and the overall computational efficiency,has seldom been *** this paper,a dynamic particle splitting method is applied and it allows for the simulation of both hydrostatic and hydrodynamic *** splitting algorithm is that,when a coarse（mother）particle enters the splitting region,it will be split into four daughter particles,which inherit the physical parameters of the mother *** the pa

关键词： Smoothed particle hydrodynamics Particle splitting Particle refinement Solid wall boundary fluid–structure interaction

Quantifying the Microstructures of Pure Cu Subjected to Dynamic Plastic Deformation at Cryogenic Temperature

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Journal of Materials Science & Technology 2011年第8期27卷 673-679页

作者： f. Yan H. W. Zhang n.R. Tao K. Lu Shenyang national Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China

A pure Cu （99.995 wt%） has been subjected to dynamic plastic deformation at cryogenic temperature to a strain of 2.1. Three types of microstructures that are related to dislocation slip, twinning and shear banding have been quantitatively characterized by transmission electron microscopy （TEM） assisted by convergent beam electron diffraction （CBED） analysis. Microstructures originated from dislocation slip inside or outside the shear bands are characterized by low angle boundaries （〈15°） that are spaced in the nanometer scale, whereas most deformation twins are deviated from the perfect ∑3 coincidence （60°/〈111〉） up to the maximum angle of 9°. The quantitative structural characteristics are compared with those in conventionally deformed Cu at low strain rates, and allowed a quantitative analysis of the flow stress-structural parameter relationship.

关键词： Quantitative structural characterization Cu Dynamic plastic deformation Trans mission electron microscopy Convergent beam electron diffraction

Comparison of nitric Oxide Concentrations in μs-and ns-Atmospheric Pressure Plasmas by UV Absorption Spectroscopy

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Plasma Science and Technology 2016年第4期18卷 406-411页

作者： f.PETERS J.HIRSCHBERG n.MERTEnS S.WIEnEKE W.VIOL HAWK University of Applied Sciences and Arts Von-Ossietzky-Straβe 9937085 Gottingen Germany fraunhofer Application Center for Plasma and Photonics Fraunhofer Institute for Surface Engineering and Thin Films IST Von-Ossietzky-Stratte 100 37085 Gottingen Germany

In this paper,an absorption spectroscopy measurement method was applied on two atmospheric pressure plasma sources to determine their production of nitric *** concentrations are essential for evaluating the plasma sources based on the principle of the Dielectric Barrier Discharge（DBD）for applications in plasma *** described method is based on a setup with an electrodeless discharge lamp filled with a mixture of oxygen and *** of the emitted wavelengths is an important resonance wavelength of nitric oxide（λ = 226.2 nm）.By comparing the absorption behaviour at the minimum and maximum of the spectral absorption cross section of nitric oxide around that wavelength,and measuring the change in intensity by the absorbing plasma,the concentration of nitric oxide inside the plasma can be *** produced nitric oxide concentrations depend on the pulse duration and are in the range of 180 ppm to 1400 ppm,so that a distance of about 10 cm to the respiratory tract is enough to conform to the VDI Guideline 2310.

关键词： nitric oxide(nO)concentration dielectric barrier discharge(DBD) ultraviolet(UV)absorption spectroscopy plasma medicine pulse duration ns-source μs-source