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Journal of Innovative Optical Health Sciences 2013年第4期6卷 84-90页

作者： JIANHUA YIN yang xia ZHIYAN xiaO Department of Biomedical Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 P.R.China Department of Physics and Center for Biomedical Research Oakland University RochesterMI 48309USA Department of Radiation Oncology Washington University School of Medicine St.Louis MO 63110USA

Fourier transform infrared imaging(FTIRI)was used to examine the depth-dependent content variations of macromolcular components,ollagen and protooglycan(PG),in osteoarthritic and healthy *** 6 pmm thick sections of canine knee cartilages were imaged at 6.25 pμrm pixel-size in *** analyzing the infrared(IR)images and spectra,the depth dependence of characteristic band(sugar)intensity of PG show obvious difference bet ween the cartilage sections of(OA)and *** result confimns that PG content decreases in the ostcoarthritic ***,no clear change occurs to collagen,suggesting that the OA influences little on the collagen content at early stage of *** observation will be helpful to further understand PG loss associated with pathological conditions in OA,and demonstrates that FIIRI has the po-tential to become an important analytical tool to identify early clinical signs of tissue degna-dation,such as PG loss even collagen disruption.

关键词： Macromolecular component osteoarthritis articular cartilage Fourier transform infrared imaging(FTIRI)

A decadal abruption of midwinter storm tracks over North Pacific from 1951 to 2010

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Atmospheric and Oceanic Science Letters 2016年第4期9卷 235-245页

作者： yang Dong-xia Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of Sciences

Based on 60-year （1951-2010） reanalysis data of the National Oceanic and Atmospheric Administration and extended reconstructed sea surface temperatures, a detailed investigation was conducted to explore the midwinter storm track changes over the North Pacific. The root- mean-square （rms） of subweekly （2.5-6 days） transient of 300 hPa geopotential height field was calculated to represent the storm track. A decadal abruption occurred in 1982/1983, according to the Mann-Kendall test result. The first two Empirical Orthogonal Function （EOF） spatial patterns of the North Pacific storm track during P1 （1955-1982） and P2 （1983-2010） revealed opposite results：The EOF1 during P1 and the EOF2 during P2 revealed changes of intensity of the midwinter storm track in the North Pacific, whereas the EOF2 during P1 and the EOF1 during P2 exhibited a southward/northward shift of its central axis. In addition, pronounced differences in the thermal influence of the ocean on the storm track during P1 and P2 existed. A strong and sustained ENSO signal contributed to a storm track variation through the westerly jet from1955 to 1982, as the storm track was observed to strengthen and shift equatorward during El Ni6o events. From 1983 to 2010, an apparent sea temperature frontal zone at approximately 40°N and the associated near-surface baroclinicity resulted in the organization of a prominent mid-latitude storm track throughout the depth of the troposphere.

关键词： Storm track midwinter EOF ENSO oceanic front baroclinicity

A novel range-Doppler imaging algorithm with OFDM radar

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Chinese Journal of Aeronautics 2016年第2期29卷 492-501页

作者： xia yang Song Zhiyong Lu Zaiqi Fu Qiang ATR Key Laboratory National University of Defense Technology

Traditional pulse Doppler radar estimates the Doppler frequency by taking advantage of Doppler modulation over different pulses and usually it requires a few pulses to estimate the Dop- pler frequency. In this paper, a novel range-Doppler imaging algorithm based on single pulse with orthogonal frequency division multiplexing （OFDM） radar is proposed, where the OFDM pulse is composed of phase coded symbols. The Doppler frequency is estimated using one single pulse by utilizing Doppler modulation over different symbols, which remarkably increases the data update rate. Besides, it is shown that the range and Doppler estimations are completely independent and the well-known range-Doppler coupling effect does not exist. The effects of target movement on the performances of the proposed algorithm are also discussed and the results show that the algo- rithm is not sensitive to velocity. Performances of the proposed algorithm as well as comparisons with other range-Doppler algorithms are demonstrated via simulation experiments.

关键词： Code symbols Doppler effect Estimation accuracy Orthogonal frequencydivision multiplexing radarRange-Doppler image Single pulse

Improved Properties of Aromatic Polyamide Tape-casting Films

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Chinese Journal of Polymer Science 2020年第12期38卷 1345-1354页

作者： Fu-Lin Liu Jjian-Jun He Hai-xia yang Shi-Yong yang Laboratory of Advanced Polymer Materials Institute of ChemistryChinese Academy of SciencesBejing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049 China

A convenient tape-casting method was applied to prepare high performance aromatic polyamide(PA)films based on Technora®.During the polycondensation,CaO was introduced to improve the solubility of the PA resin,and the generated halides were totally removed from the film via a simple water bath,without leaving any defects in PA *** factors of processing temperature and immersion time had been systematically investigated,and the experimental results demonstrated that both of them had impressive impacts on aggregation state and comprehensive properties of the PA *** was suggested that immersion in water for more than 1 min and baking below 300℃ for 10 min were the optimal conditions for the thermal,tensile,tear,and optical properties to be in the best *** resultant PA films integrated outstanding film-forming ability and excellent general performance,especially the tensile property and tear resistance.

关键词： Tape-casting Aromatic polyamide film Solubility Aggregation state Tensile property Tear resistance

Formation mechanism of subtrenches on cone-shaped patterned sapphire substrate

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Science China(Technological Sciences) 2011年第8期54卷 2232-2236页

作者： yang WeiFeng ZHANG QingZhao WANG MingGang xia yang Key Laboratory of Microelectronics Devices & Integrated Technology Institute of Microelectronics Chinese Academy of Sciences Beijing 100029 China

In this paper, the cone-shaped patterned sapphire substrates (PSS) were etched by an inductively couple plasma with BCl 3 as the reacting gas. The influence of the operating pressure and the RF bias power on subtrenches of the cone-shaped PSS and the formation mechanism of subtrenches were investigated. The profiles of patterns were characterized by FESEM (field emission scanning electron microscope). It showed that the subtrench size varied with the operating pressure and the RF bias power. As the operating pressure increased from 0.2 Pa to 0.9 Pa, the subtrenches changed from narrow and deep to wide and shallow; then to narrower and shallower. When the RF bias power varied from 200 W to 600 W, the subtrenches gradually became noticeable. The FESEM results also indicated that the subtrenches were formed due to the ion scattering effect which was caused by tapered sidewalls and charges accumulation. It is discovered that the scattering effect is closely related with the operating pressure and RF bias power.

关键词： patterned sapphire substrate subtrench scattering effect LED

A critical review on composite solid electrolytes for lithium batteries:Design strategies and interface engineering

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Journal of Energy Chemistry 2023年第9期84卷 189-209页

作者： Tianqi yang Cheng Wang Wenkui Zhang yang xia Hui Huang Yongping Gan Xinping He Xinhui xia Xinyong Tao Jun Zhang College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014ZhejiangChina

The rapid development of new energy vehicles and 5G communication technologies has led to higher demands for the safety,energy density,and cycle performance of lithium-ion batteries as power ***,the currently used liquid carbonate compounds in commercial lithium-ion battery electrolytes pose potential safety hazards such as leakage,swelling,corrosion,and *** electrolytes can be used to mitigate these risks and create a safer lithium ***,high-energy density can be achieved by using solid electrolytes along with high-voltage cathode and metal lithium *** types of solid electrolytes are generally used:inorganic solid electrolytes and polymer solid *** solid electrolytes have high ionic conductivity,electrochemical stability window,and mechanical strength,but suffer from large solid/solid contact resistance between the electrode and *** solid electrolytes have good flexibility,processability,and contact interface properties,but low room temperature ionic conductivity,necessitating operation at elevated *** solid electrolytes(CSEs) are a promising alternative because they offer light weight and flexibility,like polymers,as well as the strength and stability of inorganic *** paper presents a comprehensive review of recent advances in CSEs to help researchers optimize CSE composition and interactions for practical *** covers the development history of solid-state electrolytes,CSE properties with respect to nanofillers,morphology,and polymer types,and also discusses the lithium-ion transport mechanism of the composite electrolyte,and the methods of engineering interfaces with the positive and negative ***,the paper aims to provide an outlook on the potential applications of CSEs in solid-state lithium batteries,and to inspire further research aimed at the development of more systematic optimization strategies for CSEs.

关键词： Inorganic solid electrolytes Polymer solid electrolytes Composite solid electrolytes Interface engineering

Stochastic fluctuations of permittivity coupling regulate seizure dynamics in partial epilepsy

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Science China(Technological Sciences) 2017年第7期60卷 995-1002页

作者： GUO DaQing xia Chuan WU ShengDun ZHANG TianJiao ZHANG yangSong xia yang YAO DeZhong Key Laboratory for Neurolnformation of Ministry of Education School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu 610054China Center for Information in Medicine University of Electronic Science and Technology of ChinaChengdu 610054China School of Computer Science and Technology Southwest University of Science and TechnologyMianyang 621002China

Partial epilepsy is characterized by recurrent seizures that arise from a localized pathological brain region. During the onset of partial epilepsy, the seizure evolution commonly exhibits typical timescale separation phenomenon. This timescale separation behavior can be mimicked by a paradigmatic model termed as Epileptor, which consists of coupled fast-slow neural populations via a permittivity variable. By incorporating permittivity noise into the Epileptor model, we show here that stochastic fluctuations of permittivity coupling participate in the modulation of seizure dynamics in partial epilepsy. In particular, introducing a certain level of permittivity noise can make the model produce more comparable seizure-like events that capture the temporal variability in realistic partial seizures. Furthermore, we observe that with the help of permittivity noise our stochastic Epileptor model can trigger the seizure dynamics even when it operates in the theoretical nonepileptogenic regime. These findings establish a deep mechanistic understanding on how stochastic fluctuations of permittivity coupling shape the seizure dynamics in partial epilepsy,and provide insightful biological implications.

关键词： partial epilepsy seizures dynamics Epileptor model slow permittivity variable stochastic fluctuations of permittivity coupling

The In-plane Orientation and Thermal Mechanical Properties of the Chemically Imidized Polyimide Films

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Chinese Journal of Polymer Science 2019年第3期37卷 268-278页

作者： Zhen-He Wang Xing Chen Hai-xia yang Jiang Zhao Shi-Yong yang Laboratory of Advanced Polymer Materials Institute of Chemistry Chinese Academy of Sciences University of Chinese Academy of Science State Key Laboratory of Polymer Physics and Chemistry Institute of Chemistry Chinese Academy of Sciences Department of Polymer Science The University of Akron

The thermal and mechanical properties of the chemically imidized polyimide(CIPI) films and thermally imidized polyimide(TIPI) films were investigated systematically. Experimental results indicated that the CIPI films show dramatically enhanced tensile strength and modulus with obviously reduced coefficient of thermal expansion(CTE) in comparison with TIPI films. These enhancements results from the high in-plane orientation and close packing of the CIPI backbones. Compared with thermal imidization which starts at about 140 °C, the chemical imidization activated by acetic anhydride and isoquinoline initiates the cyclization even at room *** resulting imide rings restrict the mobility of polymer chains and lead to the in-plane orientation with solvent ***, fewer small molecules remain in the films after treated at 120 °C by chemical imidization than by thermal imidization. The polymer chain plasticization caused by the evaporation of small molecules at high temperature is obviously restricted. Moreover, the partially imidized polymer inhibits the decomposition of mainchains that occurs at subsequent high temperature process, being beneficial to the formation of high molecular weight PI films. Hence, chemical imidization pathway shows apparent advantage to produce PI films with great combined properties, including high modulus, strength and toughness, as well as high thermal dimension stability etc.

关键词： Polyimide film Chemical imidization Thermal imidization In-plane orientation CTE

云南省2020-2023年卫生资源发展状况分析

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卫生软科学 2025年第1期39卷 62-66页

作者：杨霞高峰邹钰范爽云南省健康医疗大数据中心云南昆明650118 云南省健康发展研究中心云南昆明650031

[目的]对云南省2020-2023年的卫生资源状况进行分析,为合理配置卫生资源、促进全省卫生健康事业发展提供参考。[方法]通过对2020-2023年云南省医疗卫生机构数、床位及人员等数据进行汇总分析,与全国、西部平均水平、“十四五”规划要求... 详细信息

[目的]对云南省2020-2023年的卫生资源状况进行分析,为合理配置卫生资源、促进全省卫生健康事业发展提供参考。[方法]通过对2020-2023年云南省医疗卫生机构数、床位及人员等数据进行汇总分析,与全国、西部平均水平、“十四五”规划要求进行对比。[结果]2020-2023年,云南省医疗卫生机构数从2020年的26,626个增加到2023年的28,768个,卫生人员从2020年的45.89万人增加到2023年的51.27万人,其中卫生技术人员从36.65万人增加到42.52万人;床位数从2020年的32.52万张增加到2023年的35.99万张。到2023年,每千人口医疗卫生机构床位数、执业(助理)医师数、注册护士数及每万人口全科医生数、公共卫生机构人员数分别为7.7张、3.14人、4.36人以及3.39人、8.6人。[结论]2020-2023年云南省各类卫生资源明显增加,卫生人力资源、床位资源增长较快,已逐步接近或超过“十四五”规划目标。但机构间发展不均衡,不同机构的病床使用情况存在差异,建议优化床位资源配置,继续加强执业(助理)医师、药师、公共卫生人员队伍建设,逐步促进机构间均衡发展。

关键词：卫生资源医疗卫生机构卫生人员床位十四五云南

FLUORENE-BRIDGED POLYPHENYLQUINOXALINES WITH HIGH SOLUBILITY AND GOOD THERMAL STABILITY:SYNTHESIS AND PROPERTIES

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Chinese Journal of Polymer Science 2010年第6期28卷 971-980页

作者： Cheng Li Zhuo Li Jin-gang Liu Hai-xia yang Shi-yong yang Laboratory of Advanced Polymer Materials Institute of ChemistryChinese Academy of SciencesBeijing 100190China

A novel fluorene-bridged tetraketone monomer,9,9-bis[(4-benzilyloxy)phenyl]fluorene(FLTK) was synthesized and *** tetraketone was polymerized with various aromatic tetraamines to afford a series of polyphenylquinoxalines(PPQs).The obtained polymers were found to be soluble in common organic solvents such as N-methyl-2-pyrrolidone(NMP),chloroform and *** and tough PPQ films obtained by spin-casting their NMP solutions exhibited tensile strengths higher than 60 *** films also demonstrated good thermal stability up to 500℃in nitrogen and glass transition temperatures higher than 280℃.In addition,the PPQ films exhibited good hydrolytic stability. High surface and volume resistivity retentions were achieved for the films after immersion or boiling in water for 24 h.

关键词： Polyphenylquinoxaline Fluorene Solubility Thermal stability Hydrolytic stability