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Cubic S/N co-doped TiO_(2) with rich oxygen vacancies from Ti-MOFs for efficient elimination of formaldehyde

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Chinese Chemical Letters 2024年第2期35卷 512-515页

作者： qing gao Lei Sun Zhihua Wang Jiguang Deng State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Beijing Key Laboratory for Green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaDepartment of Chemical EngineeringBeijing University of TechnologyBeijing 100124China

The cubic S/N co-doped TiO_(2)(TNSx,x is the calcination temperature)photocatalysts with rich oxygen vacancies were obtained by high temperature calcination of sulfur powder and titanium-based MOFs NH_(2)-MIL-125 for the photocatalytic removal of gaseous formaldehyde(a volatile organic compound).Among the obtained catalysts,the presence of oxygen vacancies restricted photogenerated electron and holes recombination.98.00%removal of gaseous formaldehyde in 150 min could be achieved over TNS600 by xenon lamp.The removal efficiency for formaldehyde was well retained for five cycle experiment.The results from PL,TRPL and EIS revealed that TNS600 had the best separation efficiency of photogenerated electrons and holes,and the enhanced charge separation led to a significant increase in photocatalytic activity.The photocatalytic oxidation mechanism indicated that the ^(•)OH and ^(•)O_(2)−radicals were mainly involved in the efficient elimination of gaseous formaldehyde and were able to mineralize formaldehyde to H_(2)O and CO_(2).

关键词： Metal-organic frameworks Photocatalysis Formaldehyde removal S/N co-doped TiO_(2) Oxygen vacancies

Gelatin-Based Metamaterial Hydrogel Films with High Conformality for Ultra-Soft Tissue Monitoring

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Nano-Micro Letters 2024年第2期16卷 347-364页

作者： Yuewei Chen Yanyan Zhou Zihe Hu Weiying Lu Zhuang Li Ning gao Nian Liu Yuanrong Li Jing He qing gao Zhijian Xie Jiachun Li Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China School of Mechanical Engineering Guizhou UniversityGuiyang 550025People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineClinical Research Center for Oral Diseases of Zhejiang ProvinceKey Laboratory of Oral Biomedical Research of Zhejiang ProvinceCancer Center of Zhejiang UniversityHangzhou 310006People’s Republic of China

Implantable hydrogel-based bioelectronics(IHB)can precisely monitor human health and diagnose diseases.However,achieving biodegradability,biocompatibility,and high conformality with soft tissues poses significant challenges for IHB.Gelatin is the most suitable candidate for IHB since it is a collagen hydrolysate and a substantial part of the extracellular matrix found naturally in most tissues.This study used 3D printing ultrafine fiber networks with metamaterial design to embed into ultra-low elastic modulus hydrogel to create a novel gelatin-based conductive film(GCF)with mechanical programmability.The regulation of GCF nearly covers soft tissue mechanics,an elastic modulus from 20 to 420 kPa,and a Poisson’s ratio from-0.25 to 0.52.The negative Poisson’s ratio promotes conformality with soft tissues to improve the efficiency of biological interfaces.The GCF can monitor heartbeat signals and respiratory rate by determining cardiac deformation due to its high conformability.Notably,the gelatin characteristics of the biodegradable GCF enable the sensor to monitor and support tissue restoration.The GCF metamaterial design offers a unique idea for bioelectronics to develop implantable sensors that integrate monitoring and tissue repair and a customized method for endowing implanted sensors to be highly conformal with soft tissues.

关键词： Implantable hydrogel-based bioelectronics Conformality 3D printing Metamaterial design

Power-efficient programmable integrated multiport photonic interferometer in CMOS-compatible silicon nitride

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Photonics Research 2024年第3期12卷 I0011-I0020页

作者： SHUqing LIN YANFENG ZHANG ZHAOYANG WU SHIHAO ZENG qing gao JIAQI LI XIAOQUN YU SIYUAN YU State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China Hefei National Laboratory Hefei 230088China

Silicon nitride(SiNx)is an appealing waveguide material choice for large-scale,high-performance photonic integrated circuits(PICs)due to its low optical loss.However,SiNx PICs require high electric power to realize optical reconfiguration via the weak thermo-optic effect,which limits their scalability in terms of device density and chip power dissipation.We report a 6-mode programmable interferometer PIC operating at the wavelength of 1550 nm on a CMOS-compatible low-temperature inductance coupled plasma chemical vapor deposition(ICP-CVD)silicon nitride platform.By employing suspended thermo-optic phase shifters,the PIC achieves 2×improvement in compactness and 10×enhancement in power efficiency compared to conventional devices.Reconfigurable 6-dimensional linear transformations are demonstrated including cyclic transformations and arbitrary unitary matrices.This work demonstrates the feasibility of fabricating power-efficient large-scale reconfigurable PICs on the low-temperature ICP-CVD silicon nitride platform.

关键词： unitary arbitrary figuration

多层次、多支柱体系中的个人养老金制度——路径依赖与制度完善

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华中科技大学学报（社会科学版） 2024年第1期38卷 71-81页

作者：高庆波中国社会科学院社会发展战略研究院

在20世纪90年代,中国已提出了构建“多层次”养老保险体系的构想。受现实条件影响,中国的“多层次”与世界银行的“多支柱”理念虽然相似但也存在着明显的差别——“多层次”子制度之间只具备叠加性,而不具备“多支柱”的独立性。在中... 详细信息

在20世纪90年代,中国已提出了构建“多层次”养老保险体系的构想。受现实条件影响,中国的“多层次”与世界银行的“多支柱”理念虽然相似但也存在着明显的差别——“多层次”子制度之间只具备叠加性,而不具备“多支柱”的独立性。在中国养老保险制度目标转化为“多层次、多支柱”的情况下,个人养老金制度迎来了最好的发展契机。与此同时,受路径依赖效应的影响,个人养老金制度不仅面临公共养老金制度的约束,还需面对各方主体间关系不清,制度目标未形成合力等挑战,由此导致财税优惠补贴政策、剥离个人账户以及建立统一平台等举措陷入两难困境。为此,建议:一是引入有条件的高额缴费与城镇职工基本养老保险制度缴费关联的机制;二是构建企业(职业)年金与个人养老金制度协调机制,尽力消除扩大产品规模的障碍;三是切实保障个人养老金制度各方参与者的利益。

关键词：养老保险路径依赖多层次多支柱

Danshensu Ameliorates Cardiac Ischaemia Reperfusion Injury through Activating Sirt1/Fox01/Rab7 Signal Pathway

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Chinese Journal of Integrative Medicine 2020年第4期26卷 283-291页

作者： SUN Da-wei gao qing QI Xin Department of Neurology Tianjin Academy of Traditional Chinese Medicine Affiliated HospitalTianjin(300120)China School of Integrative Medicine Tianjin University of Traditional Chinese MedicineTianjin(301617)China Department of Cardiology Tianjin Union Medical CenterTianjin(300121)China

Objective:To explore the specific molecular mechanisms of Danshensu(DSS)in the treatment of ischemia reperfusion injury(IRI).Methods:IRI model was established with isolated rat hearts by performing global ischaemia for 30 min,and then followed by 60 min reperfusion.Also,H9C2 cells were subjected to 4-h hypoxia followed by 3-h reoxygenation.Then 10|i mol/L DSS were added in the reperfusion/reoxygenation step to intervene IRI.Cardiac function,structural change and apoptosis were respectively tested by Langendorff System,hematoxylin and eosin(HE)and terminal-deoxynucleotidyl transferase mediated nick endabeling(TUNEL)stainings.Then lactate dehydrogenase(LDH),cardiac troponin T(cTnT),reactive oxygen species(ROS),superoxide dismutase(SOD)and glutathione peroxidase(GSH-PX)were detected by enzyme-linked immunosorbent assay(ELISA).Sirt1/FoxO1/Rab7 Signal Pathway was monitored at both protein and mRNA levels.Results:The results showed that IRI not only greatly attenuated cardiac function(LVDP and±dp/dtmax,P<0.01,P<0.05)and increased the level of the marker enzymes(cTnT,LDH,P<0.01)from the coronary effluents,but also markedly induced changes in the structure of cardiomyocytes and contributed to apoptosis,which were mediated by boosted en doge nous ROS.However,after treatment with DSS all above indexes were improved,which was related to activating Sirt1/FoxO1/Rab7 signal pathway accompanied with the enhancement of antioxidant defense system,such as SOD and GSH-PX.Conclusion:DSS is able to protect hearts from IRI,which may be attributable to inhibiting excessive ROS through Sirt1/FoxO1/Rab7 signaling.

关键词： Chinese medicine Danshensu ischemia reperfusion injury Sirt1/FoxO1/Rab7 signal pathway reactive oxygen species apoptosis

Roles of Gut Microbiota in Pathogenesis of Alzheimer's Disease and Therapeutic Effects of Chinese Medicine

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Chinese Journal of Integrative Medicine 2022年第11期28卷 1048-1056页

作者： SUN Ying-xin JIANG Xi-juan LU Bin gao qing CHEN Ye-fei WU Dan-bin ZENG Wen-yun YANG Lin LI Hu-hu YU Bin School of Integrative Medicine Tianjin University of Traditional Chinese MedicineTianjin(301617)China

Alzheimer’s disease(AD)is the most common neurodegenerative disease characterized by progressive cognitive impairment.The pathogenesis of AD is complex,and its susceptibility and development process are affected by age,genetic and epigenetic factors.Recent studies confirmed that gut microbiota(GM)might contribute to AD through a variety of pathways including hypothalamic pituitary adrenal axis and inflammatory and immune processes.CM formula,herbs,and monomer enjoy unique advantages to treat and prevent AD.Hence,the purpose of this review is to outline the roles of GM and its core metabolites in the pathogenesis of AD.Research progress of CMs regarding the mechanisms of how they regulate GM to improve cognitive impairment of AD is also reviewed.The authors tried to explore new therapeutic strategies to AD based on the regulation of GM using CM.

关键词： Alzheimer’s disease pathogenesis gut microbiota Chinese medicine

基于光伏发电预测的居住小区建筑高度组合寻优

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太阳能学报 2024年第5期45卷 500-507页

作者：杨瑛胡楼君高青刘柱梁中建五局设计研究总院长沙410000 中建五局设计技术科研院长沙410004

以居住小区为研究对象,首先借助Ladybug模拟小区建筑屋面、墙面光伏发电;之后通过机器学习训练出能在0.5 s内预测高度组合不同的整个小区建筑光伏发电量的模型;最后借助遗传算法,以最大建筑光伏发电总量为目标,对小区建筑高度组合进行... 详细信息

以居住小区为研究对象,首先借助Ladybug模拟小区建筑屋面、墙面光伏发电;之后通过机器学习训练出能在0.5 s内预测高度组合不同的整个小区建筑光伏发电量的模型;最后借助遗传算法,以最大建筑光伏发电总量为目标,对小区建筑高度组合进行寻优计算。研究发现:小区内建筑高度的合理组合能有效提升其光伏发电潜力,在建筑高度控制曲面s朝南偏西倾斜且以西南侧为中心下凹时,长沙地区参数化小区能获得最高全年光伏发电量(838297 kWh)。对于全国具有不同光气候条件和纬度的地区,通过所提方法可计算出差异性的居住小区最佳高度组合。

关键词：太阳能光伏发电机器学习遗传算法建筑设计

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基于构件形态的高层大跨厂房光伏遮阳设计方法

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太阳能学报 2024年第2期45卷 451-459页

作者：杨瑛高青刘柱梁徐峰周晋中建五局设计研究总院长沙410000 中建五局设计技术科研院长沙410004 湖南大学建筑与规划学院长沙410012

为建立基于构件形态参数的高层大跨厂房光伏遮阳设计评价与优化方法,以长沙同有科技项目为例,进行高层大跨厂房光热平衡算法研究。选取光伏遮阳构件的尺寸、倾斜角度以及阵列方式为变量参数,通过对参数化建模、环境性能模拟以及多目标... 详细信息

为建立基于构件形态参数的高层大跨厂房光伏遮阳设计评价与优化方法,以长沙同有科技项目为例,进行高层大跨厂房光热平衡算法研究。选取光伏遮阳构件的尺寸、倾斜角度以及阵列方式为变量参数,通过对参数化建模、环境性能模拟以及多目标算法的技术集成得到基于构件形态的光热平衡算法模型,其应用结果显示,随着多种光伏遮阳构件形态变量的调控,模型综合性能呈现出非线性的复杂变化模式。

关键词：高层建筑光伏组件多目标优化建筑设计计算机辅助设计

THE PROBABILITY STABILITY OF VISCOELASTIC PLATES

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Acta Mechanica Solida Sinica 2002年第2期15卷 182-188页

作者： Li Yinghui gao qing SW Jiaotong Univ Dept Appl Mech & Engn Chengdu 610031 Peoples R China

The almost sure stability of homogeneous viscoelastic platessubjected to a random wide-band stationary in-plane load isinvestigated. The viscoelastic behavior of the plate is described interms of the Bo- ltzmann superposition principle, the relaxationkernels of which are represented by the sums of exponents. On theassumption that the in-plane load is random wide-band stationaryprocess, sufficient conditions for al- Most sure stability ofviscoelastic plates are obtained by the applications of Lyapunov'sdirect method.

关键词： almost sure stability viscoelastic plate integral constitutive law Lyapunov's direct method