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数字鸿沟、数字普惠金融与就业增长

福建金融管理干部学院学报 2024年第2期 27-38页

作者：薛靖刘加赫肖赫文福建船政交通职业学院福建福州350007 福建师范大学经济学院福建福州350315 西南大学经济管理学院重庆市400715

在数字信息技术发展不均衡的背景下,文章基于2011-2020年中国省级层面宏观经济数据,构建数字鸿沟测度水平指标,实证考察数字鸿沟水平与就业增长之间的关系。研究发现:数字鸿沟的出现抑制了就业增长,特别是私营主体的就业规模受到了更大... 详细信息

在数字信息技术发展不均衡的背景下,文章基于2011-2020年中国省级层面宏观经济数据,构建数字鸿沟测度水平指标,实证考察数字鸿沟水平与就业增长之间的关系。研究发现:数字鸿沟的出现抑制了就业增长,特别是私营主体的就业规模受到了更大程度的抑制影响;数字普惠金融的发展能够缓解数字鸿沟所造成的就业增长抑制现象。上述发现不仅理顺了数字鸿沟、数字普惠金融与就业增长之间的逻辑关系,还为政府促进地区就业增长提供新思路。

关键词：数字鸿沟就业增长数字普惠金融

A spherical cavity expansion model for penetration of ogival-nosed projectiles into concrete targets with shear-dilatancy

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Acta Mechanica Sinica 2011年第6期27卷 1001-1012页

作者： Tao he he-Ming wen xiao-Jun Guo CAS Key Laboratory for Mechanical Behavior and Design of Materials University of Science and Technology of China 230027 Hefei China

A dynamic spherical cavity-expansion penetration model is suggested herein to predict the penetration and perforation of concrete targets struck normally by ogivalnosed *** dilatancy as well as compressibility of the material in comminuted region are considered in the paper by introducing a dilatant-kinematic relation.A procedure is first presented to compute the radial stress at the cavity surface and then a numerical method is used to calculate the results of penetration and perforation with friction being taken into *** influences of various target parameters such as shear strength,bulk modulus,density,Poisson＇s ratio and tensile strength on the depth of penetration are *** is shown that the model predictions are in good agreement with available experimental *** is also shown that the shear strength plays a dominant role in the target resistance to penetration.

关键词： Spherical cavity expansion Shear dilatancy Ogival-nosed projectile Concrete target Penetration Perforation

Suppressing autoimmunity by TGF-β： not just through Treg cells

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Cellular & Molecular Immunology 2012年第5期9卷 371-372页

作者： Ming-xiao he You-wen he Department of Immunology Duke University MedicalCenter Durham NC USA

Cellular ＆ Molecular Immunology （2012） 9,371-372; doi： 10.1038/cmi.2012.24; published online 13 August 2012Transforming growth factor-β （TGF-β） is a pleiotropic factor. It regulates manyaspects of T-cell biology including thymocyte development, T cell differentiation and effector T cell function.1 Previous work has shown that the loss of TGF-β signaling in the T-cell lineage leads to severe lymphopro- liferafive autoimmunity.2.3 Until now, it has been unclear to what extent the autoimmunity observed in those mice is driven by TGF- unresponsive conventional T cells, as TGF- is also crucial for the maintenance and function of regulatory T cells （Treg）. A recent study pub- lished in Nature Immunology revealed a novel role of TGF-β signaling in non-regulatory naive T cells. It was found that TGF-β controls lym- phopenia-driven T-ceU proliferation in neonatal mice, thereby preventing the development of autoimmtmity.

关键词： T-CELLS HOMEOSTASIS MECHANISMS

奥希替尼治疗EGFR-TKI耐药晚期肺腺癌患者疗效及对血清CEA、VEGF水平的影响

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罕少疾病杂志 2024年第2期31卷 49-51页

作者：何晓文张蕾卢帅伟李开妍三门峡市中心医院药学部河南三门峡472000 河南科技大学基础医学与法医学院河南洛阳471000

目的探讨奥希替尼治疗表皮生长因子受体酪氨酸激酶抑制剂(EGFR-TKI)耐药晚期肺腺癌的疗效及对血清CEA、VEGF水平的影响。方法回顾性选取2021年3月-2023年3月本院进行诊治的90例EGFR-TKI耐药型晚期肺腺癌患者,根据治疗方案的不同分为常规... 详细信息

目的探讨奥希替尼治疗表皮生长因子受体酪氨酸激酶抑制剂(EGFR-TKI)耐药晚期肺腺癌的疗效及对血清CEA、VEGF水平的影响。方法回顾性选取2021年3月-2023年3月本院进行诊治的90例EGFR-TKI耐药型晚期肺腺癌患者,根据治疗方案的不同分为常规组(n=42,采用常规化疗方案)和奥希替尼组(n=48,采用奥希替尼治疗方案),两组患者均经治疗后完成3个月的随访,收集两组患者的临床相关资料,观察两组的临床疗效。记录两组患者治疗前后实验室相关指标:血清肿瘤标志物[糖类抗原125(CA125)、癌胚抗原(CEA)及细胞角蛋白19片段(Cyfra21-1)]和血管生长因子[血管内皮生长因子(VEGF)、血小板衍生生长因子(PDGF)、碱性成纤维细胞生长因子(bFGF)]水平,观察两组患者治疗前后生存质量变化[生命质量测定量表(QLQ-C30)]及患者治疗期间不良反应发生情况。结果奥希替尼组的总临床有效率为89.58%,明显高于常规组的68.05%(χ^(2)=5.904,P=0.015);治疗后,两组患者的CA125、CEA、Cyfra21-1水平均有明显下降(P<0.05),奥希替尼组患者的CA125、CEA、Cyfra21-1水平均低于常规组(P<0.05);两组患者的VEGF、PDGF、b FGF水平均有明显下降(P<0.05),奥希替尼组患者的VEGF、PDGF、b FGF水平均低于常规组(P<0.05);两组患者的生存质量各领域评分均有所上升(P<0.05),奥希替尼组患者的生存质量各领域评分均高于常规组(P<0.05)。两组不良反应发生率相较无差异(18.75%vs 16.67%)(χ^(2)=0.067,P=0.796)。结论奥希替尼治疗EGFR-TKI耐药晚期肺腺癌的临床疗效显著,可有效降低其CEA、VEGF水平,改善其生存质量,且不良反应风险小,可行临床推广。

关键词：奥希替尼晚期肺腺癌表皮生长因子受体酪氨酸激酶基因突变

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Shear-thinning Catechol-modified Chitosan Hydrogel Loaded with Silver Nanoparticles for Endoscopic Submucosal Dissection

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Chinese Journal of Polymer Science 2024年第8期42卷 1147-1155页

作者： wen-Jun Feng Yan-he Wu xiao-Yang Liu Zheng-Ke Wang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310058China

Shear-thinning hydrogels have emerged for endoscopic submucosal dissection,while wound intervention after surgery has rarely been ***,a catechol-modified chitosa n hydrogel with shear-thinning property was developed for simultaneously facilitating endoscopic submucosal dissection and postoperative wound *** from the shear-thinning and self-healing characteristics,the asprepared hydrogel showed easily endoscopic *** also performed very well as submucosal cushion,which could remain above 70%after injection for 120 min in ex vivo porcine large intestine *** fact,the cushion height of normal saline dramatically decreased to 46%of the initial height at 30 *** nanoparticles encapsulated into the network endowed the hydrogel with almost reached 100%antibacterial effect against *** and *** hemolysis ratio of the hydrogel was calculated to be as low as 0.8%.Combined with good hemocompatibility and cytocompatibility,the as-prepared hydrogel displayed much higher in vivo wound closu re and healing efficacy than normal *** results demonstrated the superiority of the shear-thinning chitosan hydrogel in facilitating clinical endoscopic submucosal dissection surgery.

关键词： Shear-thinning hydrogel Endoscopic mucosal dissection Wound healing Catechol-modified chitosan Silver nanoparticles

MdWRKY40is directly promotes anthocyanin accumulation and blocks MdMYB15L, the repressor of MdCBF2, which improves cold tolerance in apple

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Journal of Integrative Agriculture 2023年第6期22卷 1704-1719页

作者： XU Peng-yue XU Li XU Hai-feng he xiao-wen he Ping CHANG Yuan-sheng WANG Sen ZheNG wen-yan WANG Chuan-zeng CheN Xin LI Lin-guang WANG Hai-bo Shandong Institute of Pomology Shandong Academy of Agricultural SciencesTai’an 271000P.R.China Modern Agriculture Research Institute of Yellow River Delta Shandong Academy of Agricultural SciencesDongying 257000P.R.China

Cold stress is an important factor that limits apple production. In this study, we examined the tissue-cultured plantlets of apple rootstocks ‘M9T337' and ‘60-160', which are resistant and sensitive to cold stress, respectively. The enriched pathways of differentially expressed genes(DEGs) and physiological changes in ‘M9T337' and ‘60-160' plantlets were clearly different after cold stress(1°C) treatment for 48 h, suggesting that they have differential responses to cold stress. The differential expression of WRKY transcription factors in the two plantlets showed that MdWRKY40is and MdWRKY48 are potential regulators of cold tolerance. When we overexpressed MdWRKY40is and MdWRKY48in apple calli, the overexpression of MdWRKY48 had no significant effect on the callus, while MdWRKY40is overexpression promoted anthocyanin accumulation, increased callus cold tolerance, and promoted the expression of anthocyanin structural gene MdDFR and cold-signaling core gene MdCBF2. Yeast one-hybrid screening and electrophoretic mobility shift assays showed that MdWRKY40is could only bind to the MdDFR promoter. Yeast twohybrid screening and bimolecular fluorescence complementation showed that MdWRKY40is interacts with the CBF2inhibitor MdMYB15L through the leucine zipper(LZ). When the LZ of MdWRMY40is was knocked out, MdWRKY40is overexpression in the callus did not affect MdCBF2 expression or callus cold tolerance, indicating that MdWRKY40is acts in the cold signaling pathway by interacting with MdMYB15L. In summary, MdWRKY40is can directly bind to the MdDFR promoter in order to promote anthocyanin accumulation, and it can also interact with MdMYB15L to interfere with its inhibitory effect on MdCBF2, indirectly promoting MdCBF2 expression, and thereby improving cold *** results provide a new perspective for the cold-resistance mechanism of apple rootstocks and a molecular basis for the screening of cold-resistant rootstocks.

关键词： MdWRKY40is anthocyanin accumulation MdMYB15L MdCBF2 cold tolerance

Intrinsically asymmetric atomic character regulates piezoelectricity in two-dimensional materials

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Frontiers of physics 2024年第3期19卷 153-162页

作者： Yun-Qin Li Qi-wen he Dai-Song Tang xiao Shang xiao-Chun Wang School of Physics Science and Information Technology Liaocheng UniversityLiaocheng 252000China Key Laboratory of Polar Materials and Devices Ministry of EducationDepartment of ElectronicsEast China Normal UniversityShanghai 200241China Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

Decreasing of layer thickness causes the decrease of polarization until it disappears due to the existence of depolarization ***,the search for strong piezoelectric materials is highly desirable for multifunctional ultra-thin piezoelectric ***,we propose a common strategy for achieving strong piezoelectric materials through the electronic asymmetry induced by the intrinsically asymmetric atomic character of different chalcogen ***,in the tetrahedral lattice structures,for example,M4X3Y3(M=Pd/Ni,X/Y=S,Se or Te,X≠Y)monolayers are proved to display excellent out-of-plane ***4Se3Te3 possesses the largest piezoelectric coefficient d33 of 61.57 pm/V,which is much larger than that of most 2D *** the electronic asymmetry further increases the out-of-plane piezoelectricity of Janus M4X3Y3 ***,the out-of-plane piezoelectricity is positively correlated with the ratio of electronegativity difference(Red)and the electric dipole moment(P).This work provides alternative materials for energy harvesting nano-devices or self-energized wearable devices,and supplies a valuable guideline for predicting 2D materials with strong out-of-plane piezoelectricity.

关键词： piezoelectricity intrinsically asymmetric atomic character ratio of electronegativity difference electric dipole moment first-principles calculations

Sensing properties and mechanisms of LaF_(3)-Co_(3)O_(4) nanorods for low-concentration methanol detection

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Rare Metals 2024年第5期43卷 2193-2204页

作者： xiao-Xi he Hong-Feng Chai Yi-wen Zhou Ke-Wei Liu Ze-Xin Yu Chao Zhang College of Mechanical Engineering Yangzhou UniversityYangzhou225127China Institutefor Manufacturing Technologies of Ceramic Components and Composites(IMTCCC) University of Stuttgart70569 StuttgartGermany

Methanol is one of the characteristic gases that distinguish between healthy individuals and lung cancer(LC)lesions in exhaled human *** concentration in exhaled breath is generally below one part per million(1×10^(-6)).The second-phase composite is widely regarded as one of the methods to improve the gas-sensing perfor-mance of metal oxide semiconductor(MOS)*** this study,LaF_(3)-Co_(3)O_(4) was synthesized by a simple hydrothermal method to enhance its low-concentration methanol gas-sensing performance.5 at%LaF_(3)-Co_(3)O_(4) nanorods exhibited excellent methanol detection performance,including a wider linear detection concentration range(0.2×10^(-6)~5×10^(-6)),a response value exceeding 4.0 for 1×10^(-6)methanol at 275°C and 75%relative humidity(RH),long-term stability(maximum deviation within 15%over 2 weeks),and excellent *** mechanism of performance enhancement was studied using various techniques,and density functional *** special spinel structure of Co_(3)O_(4),the high ionic migration of F-in LaF_(3),the larger specific surface area of 5 at%LaF_(3)-Co_(3)O_(4) nanorods,and the generated crystal defects all explain the excellentmethanol gas-sensing *** work provides a novel route to prepare MOS composite materials for low-concentration methanol gas detection.

关键词： Gas sensor LaF_(3) Co_(3)O_(4) Methanol Lung cancer

Visible-Light-Driven Four-Component Radical Relay Aminocarbonylation of Unactivated Alkenes

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Chinese Journal of Chemistry 2024年第9期42卷 990-996页

作者： Bin Lu Feng-Shuo Bao Zi-Wei he wen-Jing xiao Jia-Rong Chen Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction College of ChemistryCentralChina Normal University152 Luoyu RoadWuhanHubei 430079China Wuhan Institute of Photochemistry and Technology 7North Bingang RoadWuhanHubei 430083China Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal UniversityGanzhouJiangxi 341000China

Catalytic four-component radical carbonylation of unactivated alkenes has recently been recognized as a robust protocol for rapid construction of various structurally diverse carbonyl *** the significance of fluorine-containing groups,this reaction class has been extensively applied to assembly of a variety of perfluoroalkyl carboxylic acid derivatives by transition metal ***,we report a visible-light-driven radical relay 1,2-perfluoroalkylation aminocarbonylation of unactivated alkenes using CO gas as carbonyl source and 4CzIPN as organic photocatalyst.A wide range of alkenes and amines were well tolerated,providing the valuableβ-perfluoroalkylated amides with generally good yields and high chemoselectivity.

关键词： Visible light Photoredox catalysis Radical aminocarbonylation Multicomponent reaction Carbon monoxide Unactivated alkenes AmidesIReactionmechanisms