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Photogenerated singlet oxygen over zeolite-confined carbon dots for shape selective catalysis

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Science China Chemistry 2019年第4期62卷 434-439页

作者： Qiu-ying Yu Guang-Yao Zhai Tian-Lu Cui Hui su Zhong-Hua Xue Jun-Jun Zhang Peter J.Pauzauskie Shin-ichi Hirano Xin-Hao Li Jie-Sheng Chen School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Department of Materials Science & Engineering University of Washington Hirano Institute for Materials Innovation Shanghai Jiao Tong University

Singlet oxygen as an activated oxygen species played an important role in organic synthesis. suitable catalyst for converting ubiquitous oxygen molecule to singlet oxygen under mild conditions has attracted a wide range of attention. Herein, carbon dots have been confined into mesopores of silicalite-1 nanocrystals framework and acted as active sites for generation of singlet oxygen. The high oxygen-adsorption capacity of zeolite nanocrystals facilitated the photocatalytic generation rate of singlet oxygen, outpacing the free-standing carbon dots for 14-fold. The integrated carbon dot-zeolite nanocrystal hybrid also exhibited a special size-dependent selectivity for organic synthesis by using the in situ formed and confined singlet oxygen as active oxygen species.

关键词： zeolite photocatalysis singlet oxygen carbon dots shape-selective

Acceleration feedback control (AFC) enhanced by disturbance observation and compensation (DOC) for high precision tracking in telescope systems

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Research in Astronomy and Astrophysics 2016年第8期16卷 51-60页

作者： Qiang Wang Hua-Xiang Cai Yong-Mei Huang Liang Ge Tao Tang Yan-Rui su Xiang Liu Jin-ying Li Dong He Sheng-Ping Du Yu Ling Institute of Optics and Electronics Chinese Academy of Sciences Chengdu 610209 China Key Laboratory of Optical Engineering Chinese Academy of Sciences Chengdu 610209 China University of Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China

Abstract In this paper, a cascade acceleration feedback control （AFC） enhanced by a disturbance observa- tion and compensation （DOC） method is proposed to improve the tracking precision of telescope systems. Telescope systems usually suffer some uncertain disturbances, such as wind load, nonlinear friction and other unknown disturbances. To ensure tracking precision, an acceleration feedback loop which can in- crease the stiffness of such a system is introduced. Moreover, to further improve the tracking precision, we introduce the DOC method which can accurately estimate the disturbance and compensate it. Furthermore, the analysis of tracking accuracy used by this method is proposed. Finally, a few comparative experimental results show that the proposed control method has excellent performance for reducing the tracking error of a telescope system.

关键词： telescopes -- instrumentation control method - instrumentation miscellaneous high angularresolution - instrumentation detector -- control software

人胚胎干细胞H9诱导分化收缩型平滑肌细胞的方法研究

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中国分子心脏病学杂志 2018年第4期18卷 2576-2580页

作者：王海燕郑鹏翔王宏保任燕妮何雪琴吴敏华赵越于瀛苏枫上海市同济大学附属杨浦医院心内科上海市220090

目的改进入胚胎干细胞H9向收缩型平滑肌分化方法的研究。方法从形态和细胞免疫荧光、碱性磷酸酶(ALP)鉴定人胚胎干细胞(human embryonic stem cell,hESC)的全能性。采用单层培养H9诱导分化为中胚层(mesoderm,MES),进而改进诱导方法分化... 详细信息

目的改进入胚胎干细胞H9向收缩型平滑肌分化方法的研究。方法从形态和细胞免疫荧光、碱性磷酸酶(ALP)鉴定人胚胎干细胞(human embryonic stem cell,hESC)的全能性。采用单层培养H9诱导分化为中胚层(mesoderm,MES),进而改进诱导方法分化为收缩型平滑肌细胞(vascular smooth muscle cell,VSMC)。采用real-time PCR、western blotting、细胞免疫荧光化学技术以及流式细胞术鉴定诱导分化方法的合理性以及效率。结果 hESC表面标志物蛋白分子OCT-4在细胞核内表达呈阳性(绿色),ALP显示呈黑紫色。Real-time PCR结果显示,随着时间的推移,VSMC标志基因a-SMC、SM22a、CALPONIN在一定的时间节点后呈爆发式上升;western blotting显示第6天后开始递增表达;细胞免疫荧光显示,分化18天的细胞a-SMC阳性表达(绿色);流式细胞术结果表明,分化第15天时,a-SMC阳性细胞达90%以上。结论改进后的诱导体系更适合H9向收缩型VSMC分化。

关键词： ESC VSMC 收缩型诱导分化

Difference of Life Expenses among Rural Residents——A Case of Anhui Province,China

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Asian Agricultural Research 2010年第6期2卷 50-55页

作者： FENG ying GUO su-hua CHEN Jian-dong Chengdu Electromechanical College Chengdu 610031China School of Public Finance and Taxation Southwestern University of Finance and EconomicsChengdu 610074China

Literature review on the status of consumption difference of rural residents and its causation analysis is carried *** researches introduce the status and causation of consumption cap in rural residents from different aspects,which mainly analyze the obsolete data from the macroscopic angle by measuring *** a few researches analyze the data in recent years from the provincial angle by using Theil index as the analysis ***,taking Anhui Province as an example,Theil index is selected to calculate the consumption gap of rural residents in Anhui Province in the years 2003-2008,according to the sample survey of rural households in Anhui Province in the years *** the analysis of living consumption expenditure of rural residents,consumption change and its various internal causes are *** shows that differentiation change of food and residence consumption expenditure is the major reason for the differentiation change of living consumption *** of other expenditures are relatively small,having little impact on the living consumption of rural *** on this,suggestions are put forward in order to minimize the difference in living consumption expenditure in rural areas,such as enhancing the income level of middle and low-income family in rural areas,improving the reform of education and health care,and strengthening the construction of rural road.

关键词： Rural resident Consumption gap Theil index Anhui Province China

Bone marrow mesenchymal stem cell-derived exosomal microRNAs target PI3K/Akt signaling pathway to promote the activation of fibroblasts

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World Journal of Stem Cells 2023年第4期15卷 248-267页

作者： Fang-Qi Li Wen-Bo Chen Zhi-Wen Luo Yi-Sheng Chen Ya-ying sun Xiao-Ping su Jun-Ming sun Shi-Yi Chen Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China Guangxi Key Laboratory of Oral and Maxillofacial Rehabilitation and Reconstruction Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Laboratory Animal Center Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina

BACKGROUND Fibroblast plays a major role in tendon-bone *** derived from bone marrow mesenchymal stem cells(BMSCs)can activate fibroblasts and promote tendon-bone healing via the contained microRNAs(miRNAs).However,the underlying mechanism is not comprehensively ***,this study aimed to identify overlapped BMSC-derived exosomal miRNAs in three GSE datasets,and to verify their effects as well as mechanisms on *** To identify overlapped BMSC-derived exosomal miRNAs in three GSE datasets and verify their effects as well as mechanisms on *** BMSC-derived exosomal miRNAs data(GSE71241,GSE153752,and GSE85341)were downloaded from the Gene Expression Omnibus(GEO)*** candidate miRNAs were obtained by the intersection of three data *** was used to predict potential target genes for the candidate *** and pathway analyses were conducted using the Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)databases,respectively,by processing data with the *** interconnected genes in the protein-protein interaction(PPI)network were analyzed using Cytoscape ***,wound healing assay,collagen contraction assay and the expression of COL I andα-smooth muscle actin positive were applied to investigate the cell proliferation,migration and collagen *** real-time reverse transcription polymerase chain reaction was applied to determine the cell fibroblastic,tenogenic,and chondrogenic *** Bioinformatics analyses found two BMSC-derived exosomal miRNAs,has-miR-144-3p and hasmiR-23b-3p,were overlapped in three GSE *** network analysis and functional enrichment analyses in the GO and KEGG databases indicated that both miRNAs regulated the PI3K/Akt signaling pathway by targeting phosphatase and tensin homolog(PTEN).In vitro experiments confirmed that miR-144-3p and miR-23b-3p stimulated proliferation,migration and collagen sy

关键词： Exosome MicroRNA Fibroblast Mesenchymal stem cell Tendon-bone healing

Multifactor analysis of patients with oral sensory complaints in a case-control study

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Chinese Medical Journal 2020年第23期133卷 2822-2828页

作者： Jian-Qiu Jin Hong-Mei Cui ying Han Sha su Hong-Wei Liu Department of Oral Medicine Peking University School and Hospital of StomatologyBeijing 100081China Department of Stomatology Beijing HospitalNational Center of GerontologyBeijing 100730China Department of Stomatology Suzhou Vocational Health CollegeSuzhouJangsu 215009China Department of Stomatology Beijing Friendship HospitalCapital Medical UniversityBeijing 100069China

Background:There are an increasing number of patients with oral sensory complaints(OSCs)presenting to our dental *** most dentists,it is difficult to distinguish burning mouth syndrome(BMS)from other oral mucosal diseases that may cause symptoms such as burning *** is beneficial to effectively distinguish OSC patients to reduce misdiagnosis and eliminate burning symptoms as much as ***:Patients with oral burning sensations in the oral mucosal disease clinic were collected from the Peking University Hospital of Stomatology between September 1,2014 and December 31,*** excluding oral candidiasis,anemic stomatitis,dental material allergy,and other diseases from patients with oral sensory complaints,basic conditions such as gender,age,education level,job status,hyperglycemia,hypertension,hyperlipidemia,history of brain abnormalities,history of cervical spondylitis,history of thyroid disease,history of thyroid disease and insomnia were *** BMS patients were compared with the control *** t test and Chi-square test were used for statistical analysis to compare the clinical symptoms of these diseases and explore the risk factors for ***:In this case-control study,395 patients(321 females and 74 males,mean age 55.26±10.51 years)with oral sensory complaints and 391 healthy controls(281 females and 110 males,mean age 47.11±13.10 years)were enrolled,among which,8.4%(33/395)had oral candidiasis,1.3%(5/395)had dental material allergy,0.8%(3/395)had anemic stomatitis and 0.5%(2/395)had lichen planus.A total of 352 patients were eventually diagnosed with *** and depression were more severe in BMS patients,as were the incidences of sleep disorders and brain *** regression analysis showed that age(odds ratio[OR]=2.79,95%confidence interval[CI]:1.61-4.83,P<0.001),total cholesterol level(OR=2.92,95%CI:1.32-6.50,P=0.009)and anxiety score(OR=1.75,95%CI:1.01-2.77,P=0.017)significantly increased the incidence

关键词： Oral sensory complaints Burning mouth syndrome Patch test Candida Anemia Anxiety Depression

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直播稻与再生稻机械化生产的配套栽培技术

现代农业科技 2015年第13期 45-45,47页

作者：王苏影马众文熊清云祝飞胡金和郭畴敏喻凤琴赵燕刘宗发江西省南昌市农业科学院粮油作物研究所江西南昌330025 安义县原种繁殖场

根据"直播—再生稻机械化生产的品种筛选及配套栽培技术研究"项目的自身研究成果及示范结果,制定出适于鄱阳湖地区直播—再生稻机械化生产的配套栽培技术,以供参考。

关键词：直播再生稻机械化栽培技术

Phenolic Based Porous Carbon Fibers with superior surface Area and Adsorption Efficiency for Radioactive Protection

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Advanced Fiber Materials 2023年第4期5卷 1431-1446页

作者： Yufei Gao ying Huo Mingyi Chen Xingdong su Jie Zhan Liang Wang Feng Liu Jian Zhu Yuan Zeng Jie Fan Zesheng Li Rouxi Chen Hsing‑Lin Wang Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China School of Textiles Science and Engineering Tiangong University of TechnologyTianjin 300384China China Nuclear Power Technology Research Institute Co.Ltd Shenzhen 518028China Institute of Frontier and Intersectional Sciences Southern University of Science and TechnologyShenzhen 518055China

Radioactive iodine element mainly in CH3I is a key fission product of concern in the nuclear fuel cycle,which directly threat-ens human health if released into the *** capture of the I element is essential for human health *** iodine filter,consisting of an activated carbon inner core and cotton filter,is the most common radioactive iodine pro-tection ***,the activated carbon inside the iodine filter suffers from the weak adsorption efficiency and high ***,a process based on a strong alkali activation method was developed to significantly improve iodine absorption and reduce the cost.A series of flexible porous carbon fibers with a high specific surface area(up to about 1,500~2,200 m^(2)/g)were prepared by carbonation of the phenolic resin fibers(PF,prepared through melt spinning and crosslink)followed by activation via KOH ***,the nitrogen-doped sp^(2)-heterogeneous carbon atoms were prepared by add-ing nitrogen sources such as urea which led to a high surface area nano-porous fibers with an average pore size of~2.4 *** nitrogen-doped porous carbon fibers exhibit very high adsorption for liquid iodine and iodine *** liquid iodine adsorption capacity of nitrogen-doped porous carbon NDAC-4 prepared under 800°C reaches 2,120 mg/g,which is 2.1 times higher than that of the commercial iodine filter,and for iodine vapor the capacity can reach 5,330 mg/***,the CH_(3)I adsorption capacity is 510 mg/g,which is 3.4 times higher than that of commercial unmodified viscose fibers and has greater stability and ***,the research has met the requirements of industrial production,and the fabrication of phenolic-fibers-based protection equipment can be widely used in the nuclear radiation industry.

关键词： Iodine adsorption Phenolic resin Porous carbon fibers Nitrogen doped

Effects of low ambient temperatures and dietary vitamin C supplementation on pulmonary vascular remodeling and hypoxic gene expression of 21-d-old broilers

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Journal of Integrative Agriculture 2016年第1期15卷 183-190页

作者： ZENG Qiu-feng YANG Xia ZHENG Ping ZHANG Ke-ying LUO Yu-heng DING Xue-mei BAI Shi-ping WANG Jian-ping XUAN Yue su Zhuo-wei Key Laboratory for Animal Disease Resistance Nutrition Ministry of EducationInstitute of Animal Nutrition Sichuan Agricultural University

The objective of this study was to evaluate the effects of low ambient temperature （LAT） and dietary vitamin C （VC） sup- plementation on pulmonary vascular remodeling （PVR） and the relative expression of hypoxia inducible factor-la （HIF-la）, vascular endothelial growth factor （VEGF） and its receptor 2 （VEGFR-2） mRNA of lungs in 21-d-old broilers. 400 1-d-old male Cobb broilers were assigned randomly to 4 treatments as follows for 21 d： 1 ） LAT and a basal diet; 2） LAT and a basal diet supplemented with 1 000 mg kg-1 VC （LAT＋VC）; 3） normal ambient temperature （NAT） and a basal diet; 4） NAT and a basal diet supplemented with 1 000 mg kg-1 VC （NAT＋VC）. Each treatment was composed of 10 replicates of 10 birds per replicate. Samples of lung were collected after the broilers were killed at d 21. LAT increased the ratio of vessel wall area to vessel total area （WA/TA, %） and mean media thickness in pulmonary arterioles （mMTPA, %）（P〈0.05）. Dietary VC supplementation decreased mMTPA （P〈0.05）, but had no effect on the WA/TA. LAT increased （P〈0.05） the relative mRNA expression of HIF-la, VEGF and VEGFR-2, while adding VC to the diet could decrease （P〈0.05） their relative mRNA expression. A significant positive correlation existed between the level of VEGF mRNA expression and the value of WA/WT （P〈0.05） or mMTPA （P〈0.05）. These results suggested LAT resulted in pulmonary vascular remodeling, and the increase of HIF-la, VEGF and VEGFR-2 mRNA expression, and dietary VC supplementation can alleviate pulmonary vascular remodeling in broiler by affecting these gene expression.

关键词： broiler hypoxia inducible factor-la low ambient temperature pulmonary vascular remodeling vitamin C