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Association between mean Ocular Perfusion Pressure and Diabetic Retinopathy in a Northeastern Chinese Population

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Biomedical and Environmental Sciences 2020年第9期33卷 701-707页

作者： ZHAI Gang LIN Zhong WANG feng Hua WANG yu LI Dong WEN Liang DING Xiao Xia JIANG Jing feng Ke mi LIANG yuan Bo XIE Cong Fushun Eye Hospital Fushun 113006LiaoningChina School of Ophthalmology&Optometry Wenzhou Medical UniversityEye Hospital of Wenzhou Medical UniversityWenzhou 325035ZhejiangChina Beijing Tongren Eye Center Beijing Tongren HospitalCapital Medical UniversityBeijing Ophthalmology&Visual Science Key LabBeijing 100730China

Objective To evaluate the association between diabetic retinopathy(DR) and mean ocular perfusion pressure(mOPP) in patients with type 2 diabetes mellitus(T2 Dm).methods Patients from the Fushun Diabetic Retinopathy Cohort Study(FS-DIRECT), a communitybased prospective cohort study conducted in northeast China, were included in this study. The presence and severity of DR were determined by grading fundus photographs according to the Early Treatment Diabetic Retinopathy Study(ETDRS) retinopathy scale. Systolic and diastolic blood pressure(SBP and DBP) were recorded using an electronic sphygmomanometer. Intraocular pressure(IOP) was measured using an iCare rebound tonometer. mOPP was calculated using the formula mOPP = 2/3 [DBP + 1/3(SBP-DBP)]-*** In total, 1,857 patients who had gradable fundus photography and mOPP data were enrolled in this study. male patients had a higher mOPP than female patients(52.25 ± 8.75 vs. 50.96 ± 8.74 mmHg, P = 0.002). Overall, both male and female patients with any type of DR, non-proliferative DR(NPDR), or non-sight-threatening DR(non-STDR) had significantly higher mOPP relative to patients without DR. Increased mOPP(per 1 mmHg) was in turn associated with the presence of any type of DR[odds ratio(OR) = 1.03, 95% confidence interval(CI) : 1.02–1.04], NPDR(OR = 1.03 95% CI: 1.02–1.04),and non-STDR(OR = 1.03, 95% CI: 1.01–1.04) after adjusting for confounders. Increased mOPP(per 1 mmHg) was also associated with an increased likelihood of macular edema(OR = 1.02, 95% CI:1.01–1.04).Conclusions The results suggest that increased mOPP was associated with DR and macular edema in northeastern Chinese patients with T2 Dm.

关键词： Diabetic retinopathy Ocular perfusion pressure Systolic blood pressure Diastolic blood pressure

Global instability index as a crystallographic stability descriptor of halide and chalcogenide perovskites

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Journal of Energy Chemistry 2022年第7期31卷 1-8,I0001页

作者： Weiqiang feng Ruoting Zhao Xiaoyu Wang Bangyu Xing yilin Zhang Xin He Lijun Zhang State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012.JilinChina State Key Laboratory of Superhard materials Key Laboratory of Automobile Materials of MOE and College of Materials Science and EngineeringJilin UniversityChangchun 130012.jilin.China

Crystallographic stability is an important factor that affects the stability of *** stability dictates the commercial applications of lead-based organometal halide *** tolerance factor(t)and octahedral factor(μ)form the state-of-the-art criteria used to evaluate the perovskite crystallographic *** studied the crystallographic stabilities of halide and chalcogenide perovskites by exploring an effective alternative descriptor,the global instability index(GII)that was used as an indicator of the stability of perovskite *** particularly focused on determining crystallographic reliability by calculating *** analyzed the bond valence models of the 243 halide and chalcogenide perovskites that occupied the lowest-energy cubic-phase structures determined by conducting the first-principles-based total energy minimization *** decomposition energy(ΔHD)reflects the thermodynamic stability of the system and is considered as the benchmark that helps assess the effectiveness of GII in evaluating the crystallographic stability of the systems under *** results indicated that the accuracy of predicting thermodynamic stability was significantly higher when GII(73.6%)was analyzed compared to the cases when t(55%)andμ(39.1%)were analyzed to determine the *** results obtained from the machine learning-based data mining method further indicate that GII is an important descriptor of the stability of the perovskite family.

关键词： Organometal halide perovskites Stability Optoelectronics Global instability index First-principles calculations

Self-assembled uniform double-shelled Co_(3)V_(2)O_8 hollow nanospheres as anodes for high-performance Li-ion batteries

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Rare metals 2021年第12期40卷 3485-3493页

作者： Hao Zheng Xiao Chen yun yang Lin Li Chuan-Qi feng Shi-Quan Wang Key Laboratory of Functional materials and Chemistry for Performance and Resources of the Guizhou Education Department Anshun UniversityAnshun 561000China Key Laboratory for Synthesis and Applications of Organic Functional molecules Hubei UniversityWuhan 430062China e-mail:cfeng@***

Hollow micro-/nanostructures have achieved great success in the field of renewable battery materials by reducing the volume change and promoting the ion ***-shelled Co_(3)V_(2)O__(8)hollow nanospheres(CVODSS)were synthesized using a facile solvothermal method followed by a thermal treatment in the absence of any ***,two other architectures of hollow nanospheres and nanoparticles were obtained by changing the annealing *** from the desired hollow structure,the CVO-DSS electrode exhibits excellent lithium storage properties as an *** exhibits a reversible discharge capacity of 1210 m Ah·g^(-1)at200 m A·g^(-1)after 100 cycles and a satisfactorily high rate capacity of 628 m Ah·g^(-1)after 800 cycles at 5000 m A·g^(-1).These hollow nanostructures can efficiently enhance the contact area of the electrolyte/electrode interface,promote the diffusion of lithium ions and electrons and slow down the capacity loss during long cycles.

关键词： Co_(3)V_(2)O_8 Hollow nanospheres Double-shelled Anode materials Electrochemical properties

A novel 2×2 wavelength selective cross-connect based on mach-Zehnder interferometer

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Optoelectronics Letters 2008年第1期4卷 15-18页

作者： feng yong-hua,LUO feng-guang, and yUAN Jing School of Optoelectronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China School of Optoelectronic Science and Technology Huazhong University of Science and Technology Wuhan China

A novel 2×2 wavelength selective cross-connect (WSXC) module, which is composed of a Bragg-grating-based mach- Zehnder interferometer (mZI), a pair of optical waveguides, a pair of 1×2 optical switches (OSWs) and a pair of y-model combiners is proposed. The mathematical description of the proposed 2×2 WSXC module is given and explained. multi- channel multi-wavelength selective cross-connect can be fabricated with the proposed 2×2 WSXC module, together with multistage interconnection networks (mINs). A four-wavelength 4×4 WSXC is demonstrated by simulation to validate the flexibility of the proposed WSXC.

关键词：波长选择正交连接 mach-Zehnder干涉计布拉格光栅光学转换

microstructure and mechanical properties of 3D printed ceramics with different vinyl acetate contents

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Rare metals 2021年第11期40卷 3241-3250页

作者： He Li yong-Sheng Liu yan-Song Liu Qing-feng Zeng Jing-Jing Liang Science and Technology on Thermostructural Composite materials Laboratory Northwestern Polytechnical UniversityXi’an 710072China NPU-SAS Joint Research Center of Advanced Ceramics Northwestern Polytechnical UniversityXi’an 710072China Institute of metal Research Chinese Academy of SciencesShenyang 110016China

Stereolithography(SL)-based three-dimensional(3D) printing technique is an efficient method for the fabrication of alumina *** alumina slurry is difficult to obtain due to the barrier between hydrophilic alumina and oleophilic *** not only requires that the ceramic slurry possessed low viscosity and uniformity,but also requires that the slurry could complete the photocuring *** this study,vinyl acetate was added in the ceramic slurry as a bridge to connect alumina and resin,and the effects of vinyl acetate content on the microstructure and mechanical properties of the alumina ceramics were systematically *** results showed that the alumina ceramics were composed of three types of particles which included large aggregates,individual particles,and long-columnshaped *** shrinkage,bulk density,and crystallite size of the ceramics increased with the increase in vinyl acetate *** open porosity decreased with the increase in vinyl acetate *** flexural strength of the ceramics first increased and subsequently decreased with the increase in vinyl acetate *** shrinkage in Z direction was much greater than that in X or y *** on the above results,the optimum vinyl acetate content for alumina slurry was 10 wt%,which resulted in sintered ceramic with the shrinkage of 15.6% in X direction,13.5% in ydirection,21.9% in Z direction,bulk density of 1.9 g·cm^(-3),open porosity of 50.1%,and flexural strength of 24.4 *** sintered ceramics satisfy the requirement of alumina ceramic cores.

关键词： Stereolithography Alumina ceramics Vinyl acetate microstructure mechanical properties

Synthesis and property characterization of ternary laminar Zr_(2)SB ceramic

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Journal of Advanced Ceramics 2022年第5期11卷 825-833页

作者： Qiqiang ZHANG Shuai FU Detian WAN yiwang BAO Qingguo feng Salvatore GRASSO Chunfeng HU Key Laboratory of Advanced Technologies of materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China State Key Laboratory of Green Building materials China Building Materials AcademyBeijing 10000China

In this paper,Zr_(2)SB ceramic with purity of 82.95 wt%(containing 8.96 wt%ZrB_(2)and 8.09 wt%zirconium)and high relative density(99.03%)was successfully synthesized from ZrH_(2),sublimated sulfur,and boron powders by spark plasma sintering(SPS)at 1300℃.The reaction process,microstructure,and physical and mechanical properties of Zr_(2)SB ceramic were systematically *** results show that the optimum molar ratio to synthesize Zr_(2)SB is n(ZrH_(2)):n(S):n(B)=1.4:1.6:*** average grain size of Zr_(2)SB is 12.46μm in length and 5.12μm in width,and the mean grain sizes of ZrB2 and zirconium impurities are about 300 *** terms of physical properties,the measured thermal expansion coefficient(TEC)is 7.64×10^(-6) K^(-1) from room temperature to 1200℃,and the thermal capacity and thermal conductivity at room temperature are 0.39 J·g^(-1)·K^(-1)and 12.01 W·m^(-1)·K^(-1),*** room temperature electrical conductivity of Zr_(2)SB ceramic is measured to be 1.74×10^(6)Ω^(-1)·m^(-1).In terms of mechanical properties,Vickers hardness is 9.86±0.63 GPa under 200 N load,and the measured flexural strength,fracture toughness,and compressive strength are 269±12.7 mPa,3.94±0.63 mPa·m1/2,and 2166.74±291.34 mPa,respectively.

关键词： Zr_(2)SB spark plasma sintering(SPS) reaction path microstructure properties

Crystal structures and microwave dielectric properties of Sr_(2)mgWO_(6) ceramics at different sintering temperatures

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Journal of materiomics 2022年第1期8卷 79-87页

作者： Jiqing Lv Zhikai Cao yuying Wang feng Shi Jing Wang School of material Science&Engineering Shandong University of Science and TechnologyQingdao266590China School of materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China

Sr_(2)mgWO_(6)(SmW)is a typical perovskite oxide compound,but there has been little research on the effects of processing on its dielectric *** this work,SmW ceramics were prepared by solid-state synthesis with sintering at 1450℃,1475℃,1500℃and 1525℃,*** results confirmed that the samples possessed double perovskite structure(Fm-3m).The Raman and FTIR spectra were used to study the lattice vibrational *** FPSQ model was used to obtain the fitting curves of the FTIR spectra and derive the intrinsic properties of the material that were found to be in agreement with the measured *** structure-property relationships were successfully established based on the Raman mode *** optimal sintering temperature of SmW ceramics was identified as 1475℃due to the excellent performances characteristics(ε_(r)=16.97,Q×f=23,872 GHz,τ_(f)=-35.38 ppm/℃)obtained at this *** study explored the relationships among the crystal structures,lattice vibrational characteristics and dielectric properties of SmW ceramics,so as to further understand their dielectric response mechanism and lay a solid theoretical foundation for the development of microwave ceramics.

关键词： microwave dielectric ceramics Crystal structures Intrinsic properties Lattice vibrational characteristics Structure-property relationships

magnetic configuration effects on the edge heat flux in the limiter plasma on W7-X measured using the infrared camera and the combined probe

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Plasma Science and Technology 2018年第5期20卷 18-22页

作者： P DREWS H NIEmANN J COSFELD y GAO J GEIGER O GRULKE m HENKEL D HOSCHEN K HOLLFELD C KILLER A KRAmER-FLECKEN y LIANG S LIU D NICOLAI O NEUBAUER m RACK B SCHWEER G SATHEESWARAN L RUDISCHHAUSER N SANDRI N WANG the W7-X Team Forschungszentrum Jtilich GmbH Institut fur Energie-und Klimaforschung PlasmaphysikPartner of the Trilateral Euregio Cluster(TEC)D-52425 JulichGermany max-Planck-Institut fur Plasmaphysik GreifswaldGermany Forschungszentrum Jtilich GmbH Central Institute for EngineeringElectronics and Analytics/Engineering and Technology(ZEA-1)D-52425 JulichGermany JARA-HPC Germany School of Electrical and Electronic Engineering Huazhong University of Science and TechnologyWuhan 430074People's Republic of China

Controlling the heat and particle fluxes in the plasma edge and on the plasma facing components is important for the safe and effective operation of every magnetically confined fusion *** was attempted on Wendelstein 7-X in the first operational campaign,with the modification of the magnetic configuration by use of the trim coils and tuning the field coil currents,commonly named iota ***,the heat loads on the five limiters are ***,they differ between each limiter and are non-uniform,due to the（relatively small） error fields caused by the misalignment of *** is therefore necessary to study the influence of the configuration changes on the transport of heat and particles in the plasma edge caused by the application of error fields and the change of the magnetic *** this paper the upstream measurements conducted with the combined probe are compared to the downstream measurements with the DIAS infrared camera on the limiter.

关键词： Wendelstein 7-X W7-X plasma edge heat flux limiter

Zr对铸态mg-6Bi合金微观组织和力学性能的影响

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铸造 2024年第8期73卷 1096-1102页

作者：孟帅举肖浩然刘浩王孟璐张凤霞张婧婧刘海峰兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室甘肃兰州730050 兰州理工大学温州泵阀工程研究院浙江温州325000 中信戴卡股份有限公司河北秦皇岛066011

为探清Zr元素对mg-6Bi合金微观组织与力学性能的影响规律,制备了铸态mg-6Bix Zr(x=0,0.5,1.0wt.%)合金,采用SEm、EDS、XRD和电子力学试验机等仪器设备对其微观组织和力学性能进行表征和测试。试验结果表明,铸态mg-6Bi合金微观组织中树... 详细信息

为探清Zr元素对mg-6Bi合金微观组织与力学性能的影响规律,制备了铸态mg-6Bix Zr(x=0,0.5,1.0wt.%)合金,采用SEm、EDS、XRD和电子力学试验机等仪器设备对其微观组织和力学性能进行表征和测试。试验结果表明,铸态mg-6Bi合金微观组织中树枝晶平均尺寸约为(302±46)μm,且晶界处存在大量尺寸在1~90.12μm之间的mg3Bi2相。采用0.5%~1.0%Zr元素合金化不但可以显著细化mg-6Bi合金晶粒组织,还对合金中的mg3Bi2相有显著地变质效果。其中,mg-6Bi-1Zr合金平均晶粒尺寸为(128±65)μm,mg3Bi2相尺寸在1~28.33μm之间,较mg-6Bi合金均有显著细化。归因于晶界强化和第二相强化效果的增强,以及mg3Bi2相对基体割裂作用显著削弱,铸态mg-6Bi合金的强度和塑性均随着Zr元素含量的增加而显著提升。

关键词：镁合金 Zr元素显微组织力学性能