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Synthesis of the Silver Nanofluid by ASNSS Process

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过程工程学报 2004年第Z1期4卷 449-454页

作者： ta-Yu Chuang Depeartment of Materials Engineering Tatung University Taipei 104 China Deaprtment of Chemical Engineering Yunlin University of Technology Yunlin County China

Arc Spray Nanoparticle Synthesis System (ASNSS) has been used to prepare the silver nanofluids in this study. The metal electrodes under the electrical discharge will melt and evaporate rapidly and condense to form the nanoparticles in the dielectric fluid at lower temperature and produce the suspended nanoparticle fluid. Thus, the mechanism of the ASNSS process is superheating the electrodes by plasma to form metallic nuclei and supercooling these nuclei by dielectric liquid to produce nanofluid. This study considers the different controlling parameters such as discharge current,discharge voltage, pulse-duration time, electrode diameter, and the temperature of dielectric liquid. The optimally operated parameters can be obtained to produce the finer particle size in nanofluid. The results indicate the silver electrodes in alcohol fluid will produce the spherical nanosilver particles. The mean particle size of silver in different dielectric liquid temperatures of-40, -20, 0, and 10℃ is about13.4, 15.8, 17.5, and 21.6 nm, respectively. This indicates that the well suspended fluid can be obtained by controlling the lower dielectric fluid temperature.

关键词： ASNSS nanoparticles dielectric liquid temperatures nanofluid Ag

Kinetic modeling of high-temperature oxidation of pure Mg

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Journal of Magnesium and Alloys 2020年第3期8卷 819-831页

作者： Sa Ma Fangzhou Xing Na ta Lijun Zhang State Key Laboratory of Powder Metallurgy Central South UniversityChangshaHunan 410083P.R.China Max-Planck-Institut fiir Eisenforschung GmbH Max-Planck-Straβe 140237DusseldorfGermany

A variety of experimental tracer diffusivities of Mg and O in magnesium oxide available in the literature were first *** mobilities including bulk and short-circuit diffusion of Mg and O were then obtained by means of the CALPHAD(Calculation of Phase Diagram)***,the diffusion-controlled kinetic model of oxidation in a gas-MgO-Mg environment was developed based on the moving boundary model and Fick's law,coupling with the modified thermodynamic description of MgO.A mathematical expression for parabolic rate constant kp of the oxide scale was derived for magnesia and correlated with the thermodynamic and diffusion kinetic *** evaluated kp results were in line with the experimental ***,the oxidation process of pure magnesium at 673 K was model-predicted,and the predicted evolution of the oxide thicknesses agreed very well with the experimental *** was indicated that the grain boundaries diffusion of magnesium cations predominated the high temperature oxidation process.

关键词： MgO Diffusion Oxidation Atomic mobility CALPHAD Wagner's model

Functional,chemical,and sensorial properties of gluten-free fermented instant soup powders developed by use of mung bean and drum drying process

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Food Bioscience 2022年第3期47卷 1070-1081页

作者： Bilge taşkın NazlıSavlak Department of Food Engineering Faculty of EngineeringManisa Celal Bayar University45140YunusemreManisaTurkey

There is a potent demand to develop novel gluten-free food alternatives that are nutritious and ***-free instant fermented soup powder was developed by partial substitution of rice flour with mung bean *** of drum drying conditions;feed moisture(45–65%),drum rotating speed(0.6–2.2 rpm),and steam pressure(75–95 psi)on functional,chemical,sensorial,and morphological properties of soup powders were *** powders exhibited high protein content(20.52–22.62%)and remarkable amounts of dietary fibers(2.63–3.94%),total phenolics(2.23–3.64μg GAE/g),and antioxidant capacities(DPPH:6.28–9.96μmol TEAC/g,FRAP:26.02–42.88μmol/g).The instant structure of the soup powder was provided by water solubility(17.93–23.14%),water absorption(3.20–4.20 g/g),and gelatinization degree(82.92–97.60%)analyses,as well as SEM appearances and DSC *** conditions were determined as 57.55%feed moisture,1.00 rpm rotating speed,and 91.27 psi steam *** instant soup powders had enhanced chemical,functional and bioactive properties,and can be used practically in daily and social life by celiac patients or gluten sensitive *** bean was proven to be a valid option for novel application opportunities in gluten-free systems.

关键词： Gluten-free Antioxidant activity Mung bean Optimization Instant soup Drum drying Quality characteristics

Emerging role of galectin 3 in neuroinflammation and neurodegeneration

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Neural Regeneration Research 2024年第9期19卷 2004-2009页

作者： Brian M.Lozinski Khanh ta Yifei Dong Department of Clinical Neuroscience University of CalgaryCalgaryABCanada Deparment of Biochemistry Microbiology&ImmunologyUniversity of SaskatchewanSaskatoonSKCanada

Neuroinflammation and neurodegeneration are key processes that mediate the development and progression of neurological ***,the mechanisms modulating these processes in different diseases remain incompletely *** in single cell based multi-omic analyses have helped to identify distinct molecular signatures such as Lgals3 that is associated with neuroinflammation and neurodegeneration in the central nervous system(CNS).Lgals3 encodes galectin-3(Gal3),aβ-galactoside and glycan binding glycoprotein that is frequently upregulated by reactive microglia/macrophages in the CNS during various neurological *** Gal3 has previously been associated with non-CNS inflammatory and fibrotic diseases,recent studies highlight Gal3 as a prominent regulator of inflammation and neuroaxonal damage in the CNS during diseases such as multiple sclerosis,Alzheimer’s disease,and Parkinson’s *** this review,we summarize the pleiotropic functions of Gal3 and discuss evidence that demonstrates its detrimental role in neuroinflammation and neurodegeneration during different neurological *** also consider the challenges of translating preclinical observations into targeting Gal3 in the human CNS.

关键词： Alzheimer’s disease Galectin 3 microglia multiple sclerosis neurodegeneration neuroinflammation Parkinson’s disease therapeutics

Glutamic acid decarboxylase 65-positive autoimmune encephalitis presenting with gelastic seizure, responsive to steroid: A case report

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World Journal of Clinical Cases 2021年第19期9卷 5325-5331页

作者： Camerdy Yue Yang Sheng-ta Tsai Department of Neurology China Medical University HospitalTaichung 404332Taiwan

BACKGROUND Anti-glutamic acid decarboxylase(GAD)antibody is known to cause several autoimmune-related *** most known relationship is that it may cause type I *** addition,it was also reported to result in several neurologic syndromes including stiff person syndrome,cerebellar ataxia,and autoimmune *** ago,isolated epilepsy associated with anti-GAD antibody was first ***,the association between temporal lobe epilepsy and anti-GAD antibody has been ***,with improvements in examination technique,many more autoimmune-related disorders can be diagnosed and treated easier than in the *** SUMMARY A 44-year-old female Asian with a history of end-stage renal disease(without diabetes mellitus)under hemodialysis presented with diffuse abdominal *** initial diagnosis was peritonitis complicated with sepsis and paralytic *** peritonitis was treated and she recovered well,but seizure attack was noticed during *** clinical impression was gelastic seizure with the presentation of frequent smiling,head turned to the right side,and eyes staring without focus;the duration was about 5–10 *** lobe epilepsy was recorded through electroencephalogram,and she was later diagnosed with anti-GAD65 antibody positive autoimmune *** seizure was treated initially with several anticonvulsants but with poor ***,she showed excellent response to intravenous methylprednisolone pulse *** consciousness returned to normal,and no more seizures were recorded after 5 d of intravenous methylprednisolone *** In any case presenting with new-onset epilepsy,in addition to performing routine brain imaging to exclude structural lesion and cerebrospinal fluid studies to exclude common etiologies of infection and inflammation,checking the autoimmune profile has to be *** the practice of modern medicine,autoimmune-related disorders are relatively treatab

关键词： Anti-GAD antibody GAD65 antibody Autoimmune encephalitis Gelastic seizure Electroencephalogram Case report

Study on the dynamic behavior of herringbone gear structure of marine propulsion system powered by double-cylinder turbines

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Science China(Technological Sciences) 2022年第3期65卷 611-630页

作者： XU JiangHai JiaO ChunXiao ZOU DongLin ta Na RAO ZhuShi State Key Laboratory of Mechanical System and Vibration Institute of VibrationShock and NoiseShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration Shanghai 200240China

Propulsion systems powered by double-cylinder turbines(DCT)are widely used in large-scale ***,the nonlinear instability leads to hidden dangers associated with the safe operation,and there is a lack of theoretical and systematic research on this *** on the gear transmission principle and non-Newtonian thermal elastohydrodynamic lubrication(EHL)theory,a torsional model of a two-stage herringbone system forced by unsymmetrical load is *** nonlinear and time-varying factors of meshing friction,meshing stiffness,and gear pair backlash are included in the model,and multiple meshing states,including single-and double-sided impact are *** nonlinear phenomena of the dynamic system are explored and the effects of the unsymmetrical load on the system stability are *** results indicate that the stability of the gear system is improved,and that the back-sided impact gradually disappears with the increases of load ratio between the two inputs and the input load ***,it is found that the gear pairs on the low-load side experience more severe vibration than those on the high-load ***,the stability of the gear pairs decreases along the power transmission path of the multistage gear *** results of this research will be useful when making predictions of the stability of such systems and in the optimization of the load parameters.

关键词： DCT propulsion system DI-SO herringbone gears unsymmetrical load nonlinear instability mechanism

The effect of risk perception and COVID‑19 anxiety in pregnancy on decision‑making via the Internet and prenatal care quality:A cross‑sectional multivariate analysis

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Journal of Integrative Nursing 2023年第1期5卷 27-32页

作者： Ayşe taştekin OUYABA Şehadet taŞKIN Obstetrics and Gynecology Nursing Faculty of Health SciencesAfyonkarahisar Health Sciences UniversityAfyonkarahisarTurkey Department of Nursing Balıklıgöl State HospitalSanliurfaTurkey

Background:Risk perception and COVID‑19 anxiety in pregnant women restrict access to health services,cause pregnant women to resort to alternative channels such as the Internet,and affect prenatal care quality(PCQ)***:The purpose of this study was to examine the effect of risk perception and COVID‑19 anxiety in pregnancy on decision‑making via the Internet(DMI)and PCQ with multivariate *** and Methods:This cross‑sectional study was conducted with 406 pregnant women selected using the convenience sampling method in a training and research hospital,in *** data were collected using the information form,the perception of pregnancy risk questionnaire,the Coronavirus Anxiety Scale,the DMI Scale,and the PCQ *** data obtained were subject to descriptive analysis and the multivariate analysis of ***:Approximately 24.9%of the pregnant women were found to have a high perception of risk and 18%had symptoms of COVID‑19 *** women with high COVID‑19 anxiety and a higher perception of risk perceived the Internet as less influential for decision‑making(Ptal health and resilience in pregnant women and to formulate appropriate intervention strategies.

关键词： COVID-19 anxiety decision-making via the Internet perception of risk pregnancy prenatal care quality

Co_3O_4 nanosheets:synthesis and catalytic application for CO oxidation at room temperature

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Science China Chemistry 2014年第6期57卷 873-880页

作者： LV YongGe LI Yong ta Na SHEN WenJie State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of Sciences

Hexagonal β-Co(OH)2 nanosheets with edge length of 50 nm and thickness of 10 nm were hydrothermally synthesized with the aid of *** calcination at 350°C in air,the β-Co(OH)2 nanosheets was converted into Co3O4 nanosheets with a similar *** analyses during the calcination process identified that the β-Co(OH)2 precursor was initially dehydrated to HCoO2 and subsequently transferred into *** being applied to catalyze CO oxidation at room temperature,the Co3O4 nanosheets exhibited a higher activity than the conventional spherical *** was perhaps related to the partial exposure of the{112}planes over the Co3O4 *** porous structure generated during the calcination process also provided significant amounts of surface defects,which might contribute to the enhanced catalytic activity as well.

关键词： Co3O4 nanosheets CO oxidation morphology-dependence nanocatalysis

Effect of selected signals of interest on ultrasonic backscattering measurement in cancellous bones

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Science China(Physics,Mechanics & Astronomy) 2013年第7期56卷 1310-1316页

作者： LIU ChengCheng HAN HaiJie ta DeAn WANG WeiQi Department of Electronic Engineering Fudan University

This study examined how the signals of interest （SOI） effect on the backscattering measurement numerically based on 3-D finite-difference time-domain （FDTD） method. High resolution microstructure mappings of bovine cancellous bones provided by micro-CT were used as the input geometry for simulations. Backscatter coefficient （BSC）, integrated backscatter coefficient （IBC） and apparent integrated backscatter （AIB） were calculated with changing the start （L1） and duration （L2） of the SOl. The results demonstrated that BSC and IBC decrease as L1 increases, and AIB decreases more rapidly as L1 increases. The backscattering parameters increase with fluctuations as a function of L2 when L2 is less than 6 mm. However, BSC and IBC change little as L2 continues to increase, while AIB slowly decreases as L2 continues to increase. The results showed how the selections of the SOI effect on the backscattering measurement. An explicit standard for SOl selection was proposed in this study and short L1 （about 1.5 mm） and appropriate L2 （6 mm-12 mm） were recommended for the calculations of backscattering parameters.

关键词： ultrasonic backscattering cancellous bone FDTD simulation signals of interest backscattering parameters