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Porous γ-Fe_(2)O_(3) nanoparticle decorated with atomically dispersed platinum: Study on atomic site structural change and gas sensor activity evolution

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Nano Research 2021年第5期14卷 1435-1442页

作者： Qiheng Li Zhi Li Qinghua Zhang lirong Zheng Wensheng Yan Xiao liang Lin Gu Chen Chen Dingsheng Wang Qing Peng Yadong Li Department of Chemistry Tsinghua UniversityBeijing100084China School of Physical Sciences University of Chinese Academy of SciencesBeijing100190China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing100049China National Synchrotron Radiation Laboratory(NSRL) University of Science and Technology of ChinaHefei230029China

Decorating semi-conducting metal oxide with noble metal has been recognized as a viable approach to improve the sensitivity of gas sensor. However, conventional method which relys on noble metal nanoparticles is confronted with drawback of significantly increased cost. To maximize the atom efficiency and reduce the cost for practical industrial application, designing sensor material with noble metal isolated single atom sites (ISAS) doping is a desired option. Here, we report an atomically dispersed platinum on one-dimensional arranged porous γ-Fe2O3 nanoparticle composites as highly efficient ethanol gas sensor. The optimized sample (Pt1-Fe2O3-ox) exhibited a high response (Ra/Rg = 102.4) and good selectivity to ethanol gas. It is demonstrated only the Pt single atom sites with high valance can effectively promote the adsorption capacity to ethanol and consequently enhance the sensitivity of sensing process by changing the electrical structure of Fe2O3 support. This work indicates the single atom sites could play a vital role in improving the performance of conventional metal oxides gas sensors and pave way for the exploration of ISAS-enhanced gas sensor for other volatile organic compounds (VOCs).

关键词： isolated single atom sites structure-activity relationship gas sensor nanocomposites

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Abnormal Fibrinolytic System Related to Pulmonary Arterial Pressure and Lung Function of Patients with Idiopathic Pulmonary Fibrosis

Abnormal Fibrinolytic System Related to Pulmonary Arterial P...

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中华医学会呼吸病学年会——2013（第十四次全国呼吸病...

作者： Chengjun Ban Tongde Wang Shu Zhang Ping Xin lirong liang Chen Wang Huaping Dai Beijing Hospital Beijing Key Laboratory of Respiratory and Pulmonary Circulation Beijing Institute of Respiratory Medicine Department of Respiratory and Critical Care Medicine Beijing Chao-Yang HospitalCapital Medical University

Objectives To investigate levels of urokinase(u-PA) and tissue(t-PA) type plasminogen activator, plasminogen activator inhibitor 1(PAI-1)in patients with idiopathic pulmonary fibrosis(IPF) and determine the relationship between fibrinolytic state and pulmonary arterial pressure and lung function. Methods This study included 79 patients with IPF and 49 normal controls.Bronchoalveolar lavage fluid(BALF) and blood samples were collected.The concentrations of tPA,uPA and PAI-1 were measured with the method of enzyme linked immunosorbent assay.Doppler

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Interferon as a Mucosal Adjuvant for an Influenza Vaccine in Pigs

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Virologica Sinica 2019年第3期34卷 324-333页

作者： lirong Liu Wenhui Fan He Zhang Shuang Zhang liang Cui Meng Wang Xiaoyuan Bai Wenxian Yang Lei Sun Limin Yang Wenjun Liu Jing Li CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Interferon,a natural protein that is produced by a variety of cells during viral infection,activates the transcription of multiple functional genes in cells,regulates synergy among various signaling pathways,and mediates many biological functions such as antiviral activity,immune regulation,and cell growth.However,clinical research on interferon in livestock is lacking.In this study,recombinant porcine interferon(PoIFNα)was used as an adjuvant,in combination with inactivated influenza virus,to vaccinate 6-week-old pigs via nasal infusion.The transcription of target genes was then monitored and the functions of PoIFNαwere determined with respect to the activation of mucosal immunity.We found that a combination of low-dose PoIFNαand in activated influenza virus could significantly up-regulate the expression of immunoregulatory cytokines such as IL-2,IL-1β,IFN-γ,IL-6,and IL-10 by real-time PCR,suggesting the induction of a strong mucosal innate immune response after administration.In addition,low-dose PoIFNαcan significant enhancing the transcription of genes encoding homing factors including CCR9 and CCR10(P<0.001),thereby resulting in the induction of higher levels of HA-specific antibodies(P<0.05),which can be determined by ELISA and IFA.Post-immunization challenges with H1N1 virus demonstrated that PoIFNot,combined with inactivated influenza virus,could alleviate clinical signs in pigs during the early stages of viral infection.These studies reveal low-dose PoIFNαas a potential mucosal adjuvant for influenza virus in pigs.

关键词： Porcine interferon α(PoIFNα)-H1N1 influenza virus Intranasal administration Cytokines

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Fabricating Pd isolated single atom sites on C3N4/rGO for heterogenization of homogeneous catalysis

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Nano Research 2020年第4期13卷 947-951页

作者： Ninghua Fu Xiao liang Zhi Li Wenxing Chen Yu Wang lirong Zheng Qinghua Zhang Chen Chen Dingsheng Wang Qing Peng Lin Gu Yadong Li Department of Chemistry Tsinghua UniversityBeijing 100084China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science andEngineeringBeijing Institute of TechnologyBeijing 100081China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

Metal isolated single atomic sites catalysts have attracted intensive attention in recent years owing to their maximized atom utilization and unique structure.Despite the success of single atom catalyst synthesis,directly anchoring metal single atoms on three-dimensional(3D)macro support,which is promising to achieve the heterogenization of homogeneous catalysis,remains a challenge and a blank in this field.Herein,we successfully fabricate metal single atoms(Pd,Pt,Ru,Au)on porous carbon nitride/reduced graphene oxide(C3N4/rGO)foam as highly efficient catalysts with convenient recyclability.C3N4/rGO foam features two-dimensional microstructures with abundant N chelating sites for the stabilization of metal single atoms and vertically-aligned hierarchical mesostructure that benefits the mass diffusion.The obtained Pdi/C3N4/rGO monolith catalyst exhibits much enhanced activity over its nanoparticle counterpart for Suzuki-Miyaura reaction.Moreover,the Pdi/C3N4/rGO monolith catalyst can be readily assembled in a flow reactor to achieve the highly efficient continuous production of 4-nitro-1,1'-biphenyl through Suzuki-Miyaura coupling.

关键词： heterogenization of hom ogeneous catalysis metal isolated single atoms carbon nitride reduced graphene oxide monolith catalyst

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可控构筑亚微米多孔结构复合热电柔性薄膜

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深圳大学学报（理工版） 2023年第3期40卷 308-312页

作者：梁丽荣魏莎莎邓亮陈光明深圳大学材料学院广东深圳518071

为研究柔性与热电性能优异的聚合物基薄膜,以聚醚砜(polyether sulfone,PES)柔性滤膜为基体,通过气相聚合法,构筑具有亚微米多孔结构的聚(3,4-乙烯二氧噻吩)-对甲苯磺酸盐(poly(3,4-ethylenedioxythiophene)-tosilate,PEDOT-Tos)/PES复合热电柔性薄膜,分析氧化剂的质量分数(10%~25%)和气相聚合时间对薄膜微观结构及热电性能的影响.研究结果表明,在氧化剂质量分数为20%,聚合时间为2.5 h时,可得到具有亚微米多孔结构与优异热电性能的PEDOT-Tos/PES复合薄膜,其电导率和Seebeck系数分别为(274±9)S/m和(13.8±0.5)μV/K,并且在一定的弯曲形变下表现出稳定的热电性能.该研究为制备优异柔性与热电性能的自支撑导电聚合物基薄膜提供了简便、可行的方案.

关键词：热电材料聚(3,4-乙烯二氧噻吩) 气相聚合亚微米多孔结构热电性能柔性薄膜

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考虑风电预测误差时序性及风电可信度的双层优化模型

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电工技术学报 2023年第6期38卷 1620-1632,1661页

作者：徐询谢丽蓉梁武星叶家豪马兰可再生能源发电与并网技术教育部工程研究中心(新疆大学) 乌鲁木齐830047

推动风电等清洁能源是实现双碳目标的有力举措。为此针对风电的不确定性,提出考虑风电预测误差时序性及风电可信度的双层优化模型。首先,根据风电预测误差的时序相关性优化预测误差分段数;然后,建立双层优化模型,日前阶段上层模型基于... 详细信息

推动风电等清洁能源是实现双碳目标的有力举措。为此针对风电的不确定性,提出考虑风电预测误差时序性及风电可信度的双层优化模型。首先,根据风电预测误差的时序相关性优化预测误差分段数;然后,建立双层优化模型,日前阶段上层模型基于风电功率上下波动域以最大化利用风电和最小化发电成本及碳交易成本为目标函数,日内阶段基于风电概率性场景以最小化系统偏差校正成本及风险成本为目标函数,并考虑激励型需求响应,通过风电可信度耦合关联上下层模型;最后,以新疆某地区风电场数据进行仿真分析,结果表明所提模型能够降低系统风险成本,协调风电和火电的输出功率,并提高风电接入系统的整体经济性。

关键词：风电预测误差概率密度分布自动发电控制双层优化模型

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基于非参数核密度估计的风电场有功功率双层优化模型

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电力系统自动化 2022年第2期46卷 43-55页

作者：徐询谢丽蓉叶林路朋梁武星可再生能源发电与并网技术教育部工程研究中心(新疆大学) 新疆维吾尔自治区乌鲁木齐市830047 中国农业大学信息与电气工程学院北京市100083

为有效解决风电出力不确定性导致的机组组合问题,基于非参数核密度估计风电功率预测误差概率密度分布,提出一种日前-实时阶段的双层优化模型。首先,基于风电功率预测误差概率密度分布,构建风电功率上下波动域。其次,建立非参数核密度估... 详细信息

为有效解决风电出力不确定性导致的机组组合问题,基于非参数核密度估计风电功率预测误差概率密度分布,提出一种日前-实时阶段的双层优化模型。首先,基于风电功率预测误差概率密度分布,构建风电功率上下波动域。其次,建立非参数核密度估计风电最佳置信水平的双层优化模型,上层以风电-火电协同运行成本最小为目标,下层以风电和火电输出功率控制偏差最小为目标,并通过CPLEX求解器进行模型求解。最后,在改进的IEEE 30节点和改进的IEEE 118节点系统中,采用中国新疆地区某风电场实际数据进行验证。实验结果表明,文中所提模型可以降低系统运行成本,并且可以协调风电和火电的实时输出功率,抑制风电场有功功率波动。

关键词：风电功率最佳置信度机组组合风电功率上下波动域双层优化模型

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Poly (C)-Binding Protein 1: A Novel Function Attributed to the Nervous System Microenvironment

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World Journal of Neuroscience 2021年第1期11卷 48-66页

作者： Bingbing Jia lirong Huo Meng Ye Chensi liang Central Laboratory Fuxing Hospital The Eight Clinical Medical College Capital Medical University Beijing China

Poly (C)-binding protein 1 (PCBP1), which acts as an RNA binding protein, has multiple functions and regulates gene expression by binding to polycytosine, poly (C). The aim of the present study was to investigate the novel function of PCBP1 in the nervous system microenvironmen. The overexpression of PCBP1 has a critical effect on the proliferation and anti-apoptosis of neuroblastoma and glial cells in the direct model, whereas the overexpression of PCBP1 in neuroblastoma or glial cells cannot affect the proliferation or apoptosis of neuroblastoma or glial cells through substances secreted extracellularly. Fur-thermore, through direct or indirect actions, PCBP1 suppressed the expression of nuclear factor kappa B (NF-κB) and the inflammatory cytokine interleukin (IL)-6 and increased the levels of the anti-inflammatory cytokine IL-10;addi-tionally, PCBP1 changed the expression of functional proteins, such as heat shock protein 70 (HSP70), glial cell line-derived neurotrophic factor (GDNF) and brain-derived neurotrophic factor (BDNF). The results suggest that PCBP1 can regulate the nervous system in proliferation, apoptosis, inflammatory re-sponse and expression of relevant functional proteins, and it could provide novel targets for gene treating human neurological disorders.

关键词： PCBP1 Neurological Disorders Inflammatory Proliferation Apoptotic

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A Microarray Analysis of Parkinson’s Disease: New Clues and Evaluation

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Journal of Biosciences and Medicines 2015年第9期3卷 55-60页

作者： lirong Huo Xibin liang Yi He Xiaomin Wang Department of Neurology Fu Xing Hospital Capital Medical University Beijing China Department of Physiology Key Laboratory for Neurodegenerative Disorders of the Ministry of Education Captal Medical University Beijing China Department of Neurology Stanford University Stanford USA

Parkinson’s disease (PD) is complex and most likely results from an unknown combination of genetic and environmental factors. Here, we defined discrete genes (DGs) in a microarray analysis and found that the percentage of DGs versus all analyzable genes correlated with PD progression. Furthermore, this new parameter was also easily used to evaluate the therapeutic effect of high- frequency electro-acupuncture (EA), thus improving symptoms of PD model rats.

关键词： Parkinson’s Disease 6-OHDA Microarray Discrete Genes Cortex Striatum

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基层医院如何开展肺血栓栓塞症的临床研究

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中国医刊 2023年第11期58卷 1166-1168页

作者：梁立荣首都医科大学附属北京朝阳医院北京市呼吸疾病研究所临床流行病学研究室北京100020

肺血栓栓塞症(pulmonary thromboembolism,PTE)是肺动脉或其分支被各种栓子阻塞导致的一组疾病或临床综合征的总称,致死和致残率较高^([1])。深静脉血栓形成(deep vein thrombosis,DVT)是导致PTE的主要原因,二者合称为静脉血栓栓塞症(ve... 详细信息

肺血栓栓塞症(pulmonary thromboembolism,PTE)是肺动脉或其分支被各种栓子阻塞导致的一组疾病或临床综合征的总称,致死和致残率较高^([1])。深静脉血栓形成(deep vein thrombosis,DVT)是导致PTE的主要原因,二者合称为静脉血栓栓塞症(venous thromboembolism,VTE)。近年来我国的VTE发病例数呈上升趋势,2016年住院率为17.5/10万人,肺栓塞住院率为7.1/10万人^([2])。

关键词：肺栓塞基层医院临床研究

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