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Study on Extended Gate Field Effect Transistor with Nano-TiO-2 Sensing Membrane by Sol-Gel Method

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稀有金属材料与工程 2006年第A3期35卷 252-253页

作者： yi-Hung liao Jung-Chuan Chou Graduate School of Engineering Science and Technology National Yunlin University of Science and TechnologyDouliouTaiwan 640China

The nano-titanium dioxide (nano-TiO_2) sensing membrane,fabricated by sol-gel technology,was used as the pH-sensing layer of the extended gate field effect transistor (EGFET) *** objective of this research is the preparation of titanium dioxide materials by sol-gel method using Ti(OBu)_4 as the *** this study,we fabricated a nano-titanium dioxide sensing layer on the ITO glass by dip *** order to examine the sensitivity of the nano-TiO_2 films applied to the EGFET devices,we adopted the ITO glass as substrate,and measured theⅠ_(DS)-Ⅴ_G curves of the nano-titanium dioxide separative structure EGFET device in the pH buffer solutions that have different pH values by the Keithley 236 *** the experimental results,we can obtain the pH sensitivities of the EGFET with nano-TiO_2 sensing membrane prepared by sol-gel method,which is 59.86mV/pH from pH 1 to pH 9.

关键词： extended gate field effect transistor(EGFET) sol-gel nano-TiO2 sensing membrane buffer solution

Preparation of Al_3Sc Intermetallic Compound by FFC Method

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Journal of Materials Science & Technology 2009年第5期25卷 717-720页

作者： Xianjie liao Hongwei Xie Yuchun Zhai yi Zhang School of Materials and Metallurgy Northeasten University Shenyang 110004 China

The FFC Cambridge process is a direct electrodeoxidation process used to reduce metal oxides for metals or alloys in molten salts. Al-Sc compound oxides are used as a precursor which formed upon blending and sintering Al2O3, Sc2O3 and AI powders and are successfully reduced by using the FFC Cambridge process at 973 K with a constant cell voltage of -3.2 V. This method is applied to the preparation of fine Al3Sc particles, which can give another new view for aluminum industry.

关键词： FFC Scandium Aluminum Al alloy Al3Sc Electrowinning

A FIFTH-ORDER ACCURATE WEIGHTED ENN DIFFERENCE SCHEME AND ITS APPLICATIONS

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Journal of Computational Mathematics 2001年第5期19卷 531-538页

作者： yi-qing Shen Ru-quan Wang Hong-zhi liao Department of Mathematics Yunnan UniversityKunming 650091China ICMSEC Academy of Mathematics and Systems SciencesChinese Academy of SciencesBeijing 100080China

Presents a study which constructed a high accurate difference scheme based on the ENN scheme. Overview of ENN scheme and several high order accuracy central schemes; Numerical method used; Relation between the weighte... 详细信息

关键词： ENN scheme WENO scheme shock-boundary-layer interaction

Multi-objective optimal dispatch of household flexible loads based on their real-life operating characteristics and energy-related occupant behavior

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Building Simulation 2023年第11期16卷 2005-2025页

作者： Zhengyi Luo Jinqing Peng Maomao Hu Wei liao yi Fang College of Civil Engineering Hunan UniversityChangshaHunanChina Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education ChangshaHunanChina Department of Energy Science and Engineering Stanford UniversityStanfordCA94305USA

A model-based optimal dispatch framework was proposed to optimize operation of residential flexible loads considering their real-life operating characteristics,energy-related occupant behavior,and the benefits of different stakeholders.A pilot test was conducted for a typical *** to the monitored appliance-level data,operating characteristics of flexible loads were identified and the models of these flexible loads were developed using multiple linear regression and K-means clustering ***,a data-mining approach was developed to extract the occupant energy usage behavior of various flexible loads from the monitored *** behavior of appliance usage,such as daily turn-on times,turn-on moment,duration of each operation,preference of temperature setting,and flexibility window,were determined by the developed data-mining *** on the established flexible load models and the identified occupant energy usage behavior,a many-objective nonlinear optimal dispatch model was developed aiming at minimizing daily electricity costs,occupants’dissatisfaction,CO_(2) emissions,and the average ramping index of household power *** model was solved with the assistance of the NSGA-III and TOPSIS *** indicate that the proposed framework can effectively optimize the operation of household flexible *** with the benchmark,the daily electricity costs,CO_(2) emissions,and average ramping index of household power profiles of the optimal plan were reduced by 7.3%,6.5%,and 14.4%,respectively,under the TOU tariff,while those were decreased by 9.5%,8.8%,and 23.8%,respectively,under the dynamic price *** outputs of this work can offer guidance for the day-ahead optimal scheduling of household flexible loads in practice.

关键词： household load flexibility flexible load modeling occupant energy usage behavior many-objective optimal dispatch NSGA-III

Regulation of rhizosphere microenvironment by rice husk ash for reducing the accumulation of cadmium and arsenic in rice

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Journal of Environmental Sciences 2024年第2期136卷 1-10页

作者： yi Jiang Ya Liu Xuantao yi Peng Zeng Bohan liao Hang Zhou Jiaofeng Gu College of Environmental Science and Engineering Central South University of Forestry and TechnologyChangsha 410004China Hunan Engineering Laboratory for Control of Rice Quality and Safety Changsha 410004China

It is important to reduce Cd and As content in brown rice in contaminated paddy *** conducted research on the effects of rice husk ash (RHA) on the Cd and As in the rhizosphere microenvironment (soil,porewater,and iron plaque) and measured the Cd,As,and Si content in rice *** main elements in RHA were Si (29.64%) and O (69.17%),which had the maximum adsorption capacity for Cd was 42.49 mg/kg and for As was 18.62 mg/*** pH and available Si content increased,while soil available Cd and As decreased following application of 0.5%–2%*** promote the transformation of Cd to insoluble fraction,while As was transformed from a poorly soluble form to a more active *** reduced Cd content and increased Si content in porewater,and reduced As only at the later rice growth *** increased the amount of iron plaque,thereby decreasing the Cd content in iron plaque,while increased the As content in *** and inorganic As content in brown rice were decreased,to 0.31 mg/kg and 0.18 mg/kg,*** decrease of Cd in brown rice was due to the decrease of Cd mobility in soil,thereby reducing root accumulation,while the decrease of As in brown rice was affected by the transport from roots to ***,RHA can be considered as a safe and efficient in-situ remediation amendment for Cd and As co-contaminated paddy soil.

关键词： Rice husk ash(rha) Cadmium Arsenic Silicon Rice Soil

Effects of insertion device on SSRF storage ring

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Nuclear Science and Techniques 2006年第1期17卷 1-6页

作者： ZHANG Li-Hua liao yi LIU Gui-Min Shanghai Institute of Applied Physics the Chinese Academy of Sciences Shanghai 201800 China

Shanghai Synchrotron Radiation Facility (SSRF), one of the third generation light sources, aims to pro-duce high brightness and/or high flux X-ray source for users; therefore insertion devices (IDs) are important magnetic elements for SSRF. In this paper, the linear perturbations due to IDs toward its storage ring lattice, such as beta func-tion distortions, tune shifts, emittance growths, and energy spreads are estimated by using analytical formulae, and the nonlinear effects from IDs, especially dynamic aperture, are simulated by using Racetrack code. The results show that (a) the reduction of dynamic aperture from single undulator is negligible, since electron beam energy of 3.5 GeV is high and ID’s magnetic field is low, and the beta functions in the middle of straight sections, where ID is located, are well optimized; (b) however, the reduction from single wigglers, especially super-conducting wiggler, is visible, be-cause of its higher magnetic field; (c) effects of each ID on emittance growths and energy spreads are less than 7%.

关键词： SSRF 储存环插入装置第三代光源同步加速器

Modeling the evolution and distribution of the frequency's second derivative and the braking index of pulsar spin

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Research in Astronomy and Astrophysics 2015年第7期15卷 963-974页

作者： yi Xie Shuang-Nan Zhang Jin-Yuan liao National Astronomical Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Physics Department University of Alabama in Huntsville

We model the evolution of the spin frequency＇s second derivative ν¨ and the braking index n of radio pulsars with simulations within the phenomenological model of their surface magnetic field evolution, which contains a long-term power-law decay modulated by short-term oscillations. For the pulsar PSR B0329＋54, a model with three oscillation components can reproduce its ν¨ variation. We show that the ＂averaged＂ n is different from the instantaneous n, and its oscillation magnitude decreases abruptly as the time span increases, due to the ＂averaging＂ effect. The simulated timing residuals agree with the main features of the reported data. Our model predicts that the averaged ν¨ of PSR B0329＋54 will start to decrease rapidly with newer data beyond those used in Hobbs et al. We further perform Monte Carlo simulations for the distribution of the reported data in ｜ν¨｜ and ｜n｜ versus characteristic age τ*** is found that the magnetic field oscillation model with decay index α = 0 can reproduce the distributions quite well. Compared with magnetic field decay due to the ambipolar diffusion（α = 0.5） and the Hall cascade（α = 1.0）, the model with no long term decay（α = 0） is clearly preferred for old pulsars by the p-values of the two-dimensional Kolmogorov-Smirnov test.

关键词： stars: neutron -- pulsars: individual (B0329+54) -- pulsars: general --magnetic fields

Design of a large momentum acceptance proton therapy gantry utilizing AG-CCT magnets

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Nuclear Science and Techniques 2024年第10期35卷 59-69页

作者： yi-Cheng liao Xu Liu Wei Wang Zi-yi Yang Qu-Shan Chen Bin Qin State Key Laboratory of Advanced Electromagnetic Technology Huazhong University of Science and TechnologyWuhan 430074China

The application of superconducting(SC)technology enables magnets to excite strong fields with small footprints,which has great potential for miniaturizing proton therapy ***,the slow ramping rate of SC magnets results in a low treatment efficiency compared with normal-conducting(NC)*** address this problem,this study proposes a compact proton therapy gantry design with a large momentum acceptance utilizing alternating-gradient canted-cosine-theta(AG-CCT)SC *** our design,a high-transmission degrader is mounted in the middle of the gantry,and the upstream beamline employs NC magnets with small *** of the degrader,large-bore AG-CCT magnets with strong alternating focusing gradients are set symmetrically as a local achromat,which realizes a momentum acceptance of 20%(or 40%in the energy domain).Therefore,only three magnetic working points are required to cover a treatment energy of 70-230 Me *** to the large momentum acceptance,the proton beam after the degrader can be directly delivered to the isocenter without truncating its energy spectrum,which can significantly increase the treatment efficiency but causes severe dispersion effects during pencil beam ***,a compensation method was introduced by tuning the normal and skewed quadrupoles during the scanning *** a result,the new gantry not only presents a remarkable reduction in the size and weight of the facility but also shows good potential for fast treatment.

关键词： Alternating-gradient canted-cosine-theta magnets Large momentum acceptance gantry Pencil beam scanning Proton therapy

Soluble, Antibaterial, and Anticorrosion Studies of Sulfonated Polystyrene/Polyaniline/Silver Nanocomposites Prepared with the Sulfonated Polystyrene Template

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Chinese Journal of Chemistry 2017年第7期35卷 1157-1164页

作者： Guangfu liao Yan Gong Changfeng yi Zushun Xu Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for The Green Preparation and Application of Functional Material Hubei University Wuhan Hubei 430062 China College of Chemistry and Chemical Engineering Fuzhou University Fuzhou Fujian 350108 China

In this work, multifunctional sulfonated polystyrene/polyaniline/silver （SPS/PANI/Ag） nanocomposites are prepared through using sulfonated polystyrene （SPS） spheres as templates and utilizing polyvinylpyrrolidone （PVP） as reducing agent and stabilizing agent. Our method is an environmentally friendly method because no toxic rea- gents are added during the preparation process. Fourier transform infrared spectrum （FTIR）, field emission scanning electron microscopy （FESEM）, and energy disperse spectroscopy （EDX） results confirmed the formation of PS spheres, SPS spheres, SPS/PANI nanocomposites, and SPS/PANI/Ag nanocomposites. Powder X-ray diffraction （XRD） patterns indicate that the obtained Ag nanoparticles are crystalline. Solubilities measurements show that SPS/PANI/Ag nanocomposites have improved solubilities when compared to pure PANI in common organic sol- vents and deionized water. Antibacterial studies show that SPS/PANI/Ag nanocomposites can greatly inhibit the growth of Escherichia coli and Staphylococcus aureus. Anticorrosion studies show that the incorporation of SPS/PANI/Ag nanocomposites in waterborne alkyd resin can greatly promote＇the anticorrosive efficiency of water- borne alkyd resin.

关键词： sulfonated polystryrene polyaniline silver antibacterial anticorrosion