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Synthesis of spherical nano-ZSM-5 zeolite with intergranular mesoporous for alkylation of ethylbenzene with ethanol to produce m-diethylbenzene

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Chinese Journal of Chemical Engineering 2024年第3期67卷 298-309页

作者： Siyue Wang jinhong Li Qingxin Xu Shengjie song Yu'ni Jiang Lidong Chen Xin Shi Weiguo Cheng Faculty of Chemistry and Chemical Engineering Liaoning Normal UniversityDalian 110629China Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Catalytic synthesis of m-diethylbenzene(m-DEB)through alkylation of ethylbenzene(EB)may be a promising alternative route in comparison with traditional rectification of mixed DEB,for which the top priority is to develop efficient and stable heterogeneous catalysts.Here,the spherical nano-ZSM-5 zeolite with abundant intergranular mesoporous is synthesized by the seed-mediated growth method for alkylation of EB with ethanol to produce m-DEB.The results show that the spherical nano-ZSM-5 zeolite exhibits better stability and higher alkylation activity at a lower temperature than those of commercial micropore ZSM-5.And then,the spherical nano-ZSM-5 is further modified by La_(2)O_(3) through acid treatment followed by immersion method.The acid treatment causes nano-ZSM-5 to exhibit the increased pore size but decreased the acid sites,and subsequent La_(2)O_(3) loading reintroduces the weak acid sites.As a result,the HNO_(3)-La_(2)O_(3)-modified catalyst exhibits a slight increase in EB conversion and DEB yield in comparison with unmodified one,and meanwhile,it still maintains high m-DEB selectivity.The catalyst after acid treatment achieves higher catalytic stability besides maintaining the high alkylation activity of EB with ethanol.The present study on the spherical nano-HZSM-5 zeolite and its modification catalyst with excellent alkylation ability provides new insights into the production of mDEB.

关键词： Zeolite Modification Alkylation reaction m-diethylbenzene Catalyst Fixed-bed

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Physics-based simultaneous retrieval of atmospheric temperature-humidity profiles and land surface temperature-emissivity by integrating Terra/Aqua MODIS measurements

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Science China(Physics,Mechanics & Astronomy) 2011年第8期54卷 1420-1428页

作者： CHEN ShengBo song jinhong College of Geoexploration Science and Technology Jilin University Changchun 130026 China College of Resources and Environment Jilin Agricultural University Changehun 130118 China

Atmospheric temperature-humidity profiles and land or sea surface temperature are coupled actions in the earth system process. Based on the numerical perturbation form of the atmospheric radiative transfer equation, a physics-based algorithm is pre- sented to integrate four pairs of MODIS measurements from the Terra and Aqua satellites to retrieve simultaneously atmospheric temperature-humidity profile, land-surface temperature and emissivity. Three pairs of MODIS data at two field sites in China, Luancheng and Poyang Lake areas, have been chosen to test and validate the model. Two pairs of atmospheric tem- perature and humidity profiles, land surface temperature (LST), and land surface emissivity (LSE) have been retrieved simul- taneously for every pair of MODIS measurements respectively by the proposed physical algorithm for the study area. The synchronous field measurements at two field sites were conducted to validate the retrieval LST, the differences between the retrieved LST and the field measurements are in the range of -0.15 K and 1.11 K. The emissivity errors of MODIS bands 31 and 32, compared with the EOS MODIS LST/LSE data products (MOD11_L2/MYD11_L2 V5) by the physics-based day/night algorithm, are from 0.0018 to 0.44 and from 0.0058 to 1.24, respectively. Meanwhile, the retrieved atmospheric profiles fully agree with the standard atmospheric temperature-water vapor profiles and with the results from single MODIS data onboard Terra or Aqua satellite by the former two-step physical algorithm. Therefore, the proposed algorithm is robust enough to improve the retrieval accuracy of the atmospheric profiles and land surface parameters. And it will have four pairs of the retrieval results for one area each day by integrating these MODIS measurements from Terra and Aqua satellites.

关键词： MODIS数据海洋表面温度地表发射率大气温度卫星测量检索结果物理学兵马俑

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Inulin alleviates HFD-induced NAFLD by hepatic macrophage polarization and lipid metabolism via gut-liver axis

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Food Science and Human Wellness 2024年

作者： Wei song jinhong Hu Lina Zhu Bing Chen Lingling Li Xiaole Cui Ting Zhang Yaxing Miao Kaixin Su Changchun Liu Yane Luo Tianli Yue College of Food Science and Technology Laboratory of Nutritional and Healthy Food-Individuation Manufacturing Engineering Research Center of Food Safety Risk Assessment and Control Northwest University

Long-term intake of high-fat diet (HFD) leads to systemic hypo-inflammation， which is involved in the pathogenesis of many liver diseases. The aim of this study was to evaluate the interventional effect of inulin addition on HFD-induced non-alcoholic fatty liver disease (NAFLD). Here， we assessed liver inflammation and lipid metabolism by ELISA kits and real-time quantitative polymerase chain reaction (qPCR)， and explored its relationship with intestinal flora and metabolites by 16S rDNA gene sequencing and untargeted metabolomics. In addition， we determined the effect of the inositol-requiring enzyme-1α (IRE1α-XBP1) pathway on liver macrophage polarization by flow cytometry. In conclusion， our study has demonstrated that inulin ameliorates high levels of bile acids and colonic immune disorders induced by HFD， and improves hepatic macrophage polarization and hepatic lipid metabolism via the intestine-hepatic axis， thus providing a mechanistic basis for therapeutic approaches to modulate bile acids to improve colonic inflammation and nonalcoholic fatty liver disease.

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Effects of spot size on the operation mode of Ga As photoconductive semiconductor switch employing extrinsic photoconductivity

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Plasma Science and Technology 2024年第5期26卷 91-99页

作者：韦金红李嵩陈红曾凡正贾成林付泽斌葛行军钱宝良 College of Advanced Interdisciplinary Studies National University of Defense TechnologyChangsha 410073People’s Republic of China

To guide the illuminating design to improve the on-state performances of gallium arsenide(GaAs)photoconductive semiconductor switch(PCSS),the effect of spot size on the operation mode of GaAsPCSS based on a semi-insulating wafer with a thickness of 1 mm,triggered by a 1064-nm extrinsic laser beam with the rectangular spot,has been investigated experimentally.It is found that the variation of the spot size in length and width can act on the different parts of the output waveform integrating the characteristics of the linear and nonlinear modes,and then significantly boosts the PCSS toward different operation modes.On this basis,a two-channel model containing the active and passive parts is introduced to interpret the relevant influencing mechanisms.Results indicate that the increased spot length can peak the amplitude of static domains in the active part to enhance the development of the nonlinear switching,while the extended spot width can change the distribution of photogenerated carriers on both parts to facilitate the linear switching and weaken the nonlinear switching,which have been proved by comparing the domain evolutions under different spot sizes.

关键词： GaAs PCSS operation mode spot size on-state performances two-channel model domain evolution

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NaCl胁迫下宁夏枸杞ABA代谢相关基因差异表达分析

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西北农业学报 2024年第4期33卷 664-672页

作者：梁旺利于雯静胡进红宋繁王玲霞梁文裕宁夏大学生命科学学院银川750021

为解析宁夏枸杞响应NaCl胁迫的ABA代谢分子调控机制,检测NaCl胁迫下宁夏枸杞叶片脱落酸(ABA)含量变化,并利用RNA-seq和qRT-PCR技术研究NaCl胁迫下ABA代谢相关基因的差异表达规律。结果表明,不同浓度NaCl胁迫下,宁夏枸杞叶片中ABA含量随N... 详细信息

为解析宁夏枸杞响应NaCl胁迫的ABA代谢分子调控机制,检测NaCl胁迫下宁夏枸杞叶片脱落酸(ABA)含量变化,并利用RNA-seq和qRT-PCR技术研究NaCl胁迫下ABA代谢相关基因的差异表达规律。结果表明,不同浓度NaCl胁迫下,宁夏枸杞叶片中ABA含量随NaCl浓度的增加呈现增加趋势;通过转录组测序筛选得到21个ABA代谢相关的差异表达基因,从100 mmol/L、200 mmol/L、300 mmol/L NaCl处理下的宁夏枸杞叶片中检测到ABA代谢相关的差异表达基因分别有17、11、9个,qRT-PCR检测结果与转录组测序结果基本一致。宁夏枸杞通过相关基因的差异表达调控ABA代谢和信号通路,从而参与调控其响应NaCl胁迫。

关键词：宁夏枸杞 NaCl胁迫 ABA 代谢差异基因表达

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二陈汤加减治疗慢性阻塞性肺疾病痰湿蕴肺证的临床效果

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临床研究 2024年第7期32卷 106-109页

作者：宋海燕汤金红马炳莉固始县人民医院呼吸与危重症医学科河南信阳465200

目的探讨慢性阻塞性肺疾病(COPD)痰湿蕴肺证患者采用二陈汤加减治疗的临床效果。方法选取2022年10月至2023年10月固始县人民医院收治的80例COPD痰湿蕴肺证患者,以随机数字表法分成研究组(n=40)与对照组(n=40),对照组采用常规西医治疗,... 详细信息

目的探讨慢性阻塞性肺疾病(COPD)痰湿蕴肺证患者采用二陈汤加减治疗的临床效果。方法选取2022年10月至2023年10月固始县人民医院收治的80例COPD痰湿蕴肺证患者,以随机数字表法分成研究组(n=40)与对照组(n=40),对照组采用常规西医治疗,研究组采用二陈汤加减联合常规西药治疗,比较两组临床疗效、中医证候积分、肺功能指标及炎症因子。结果研究组治疗有效率(97.50%)高于对照组(80.00%),差异具有统计学意义(P<0.05);两组治疗后各项中医证候积分均低于治疗前,且研究组低于对照组,差异均有统计学意义(P<0.05);两组治疗后肺总量(TLC)、第1秒用力呼气量(FEV_(1))、肺活量(FVC)、残气容积(RV)、潮气量(TV)均高于治疗前,且研究组高于对照组,差异均有统计学意义(P<0.05);两组治疗后干扰素-γ(IFN-γ)、内皮素-1(ET-1)水平均低于治疗前,且研究组低于对照组,差异均有统计学意义(P<0.05)。结论二陈汤加减治疗COPD痰湿蕴肺证能够提高临床疗效,改善中医证候以及肺功能,有效降低炎症因子水平。

关键词：二陈汤加减慢性阻塞性肺疾病痰湿蕴肺证临床效果

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草乌甲素对哮喘小鼠治疗作用及其机制研究

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中国病原生物学杂志 2024年第4期19卷 441-445,449页

作者：宋乔文许月野郭伟湛孝东赵金红李媛媛徐静云唐小牛皖南医学院医学寄生虫学教研室安徽芜湖241002 皖南医学院活性生物大分子研究安徽省重点实验室

目的研究草乌甲素对哮喘小鼠的治疗作用及其对气道上皮紧密连接蛋白occludin,claudins以及黏蛋白5AC的影响。方法48只SPF级BALB/c雌鼠以每组12只随机分成4组,阴性对照组(NC组),哮喘组(AS组),草乌甲素(BLA组)和地塞米松阳性对照组(Dex组... 详细信息

目的研究草乌甲素对哮喘小鼠的治疗作用及其对气道上皮紧密连接蛋白occludin,claudins以及黏蛋白5AC的影响。方法48只SPF级BALB/c雌鼠以每组12只随机分成4组,阴性对照组(NC组),哮喘组(AS组),草乌甲素(BLA组)和地塞米松阳性对照组(Dex组)。以粉尘螨提取浸液构建哮喘模型。酶联吸附反应(ELISA)检测血清IgE和肺泡灌洗液(BALF)中IL-4、IFN-γ及黏蛋白5AC(MUC5AC)的含量;苏木精-伊红(HE)和过碘酸-雪夫(PAS)染色观察肺组织病理改变;Western blot和免疫荧光检测肺组织气道上皮紧密连接蛋白occludin和claudins表达;RT-qPCR检测肺组织MUC5AC mRNA的表达。结果ELISA结果表明:与AS组(306.70±46.73)ng/mL相比,BLA组小鼠IgE(142.17±25.66)ng/mL水平显著下降;与AS组(242.35±41.81)pg/mL相比,BLA组小鼠IL-4(166.76±26.32)pg/mL水平显著下降;与AS组(272.34±57.32)pg/mL相比,BLA组小鼠IFN-γ(369.13±51.41)pg/mL水平显著上升;与AS组(1.42±0.34)ng/mL相比,BLA组小鼠MUC5AC(0.66±0.24)ng/mL水平显著下降(均P<0.01)。HE和PAS染色结果表明:与AS组相比,BLA组小鼠气道炎症细胞浸润,杯状细胞增生等病理改变明显缓解。Western blot结果表明:与AS组相比,BLA组小鼠occludin、claudin-1蛋白表达明显上调,claudin-4蛋白表达明显下调(均P<0.05)。免疫荧光结果表明:与AS组相比,BLA组小鼠气道上皮紧密性明显改善。RT-qPCR结果表明:与AS组相比,BLA组小鼠Muc5ac mRNA表达显著抑制(P<0.01)。结论草乌甲素可能通过调节气道上皮紧密连接蛋白和MUC5AC的表达水平改善哮喘小鼠气道上皮屏障功能。

关键词：过敏性哮喘草乌甲素上皮屏障紧密连接蛋白 MUC5AC

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吉林省地质环境信息数据共享和服务平台研究

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华北地质 2024年第2期47卷 89-95,110页

作者：张熠斌刘华徐思瑜李颖徐誉维宋金红吉林省地质环境监测总站(吉林省地质灾害应急技术指导中心) 长春130021 吉林农业大学长春130118

【研究目的】为全面提升吉林省地质环境信息服务能力,解决地质环境数据存储分散、缺乏数据共享服务机制和综合分析能力弱等诸多问题,采用“大综合、大集成、大融合”的理念,研发了吉林省地质环境信息数据共享和服务平台。【研究方法】... 详细信息

【研究目的】为全面提升吉林省地质环境信息服务能力,解决地质环境数据存储分散、缺乏数据共享服务机制和综合分析能力弱等诸多问题,采用“大综合、大集成、大融合”的理念,研发了吉林省地质环境信息数据共享和服务平台。【研究方法】平台以面向服务架构(Service-Oriented Architecture,SOA)为总体框架,在.Net、地理信息系统(Geographic Information System,GIS)、虚拟现实(Virtual Reality,VR)、数据库等技术的支撑下,基于哈希格网改进的椭球四叉树空间索引和切片数据库构建技术、SOA和WCF地质环境大数据共享与服务技术、C/S和B/S模式信息系统集成等关键技术综合研发而成。【研究结果】平台高度整合集成地质环境调查监测和综合评价数据,规范化地质环境数据从生产、汇交、整合、管理、更新、共享到应用的全过程,采用工作系统、服务系统、科普系统的个性化功能提升地质环境数据服务的专业性与普适性,并基于VR技术和地质环境交叉研究提升地质环境数据应用的广度与深度。【结论】平台较大程度提升了地质环境成果转化的科技创新能力和现代化水平,对精准服务地质环境调查、监测、保护和地质灾害防治具有重要意义。

关键词：吉林省一张图虚拟现实工作系统服务系统科普系统地质环境

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Ultralow Interfacial Thermal Resistance of Graphene Thermal Interface Materials with Surface Metal Liquefaction

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Nano-Micro Letters 2023年第1期15卷 183-196页

作者： Wen Dai Xing-Jie Ren Qingwei Yan Shengding Wang Mingyang Yang Le Lv Junfeng Ying Lu Chen Peidi Tao Liwen Sun Chen Xue jinhong Yu Chengyi song Kazuhito Nishimura Nan Jiang Cheng-Te Lin Key Laboratory of Marine Materials and Related Technologies Zhejiang Key Laboratory of Marine Materials and Protective TechnologiesNingbo Institute of Materials Technology and Engineering(NIMTE)Chinese Academy of SciencesNingbo 315201People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Institute of Advanced Technology Shandong UniversityJinan 250100People’s Republic of China Ningbo Institute of Materials Technology and Engineering(NIMTE) Chinese Academy of SciencesNingbo 315201People’s Republic of China The State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong University800 Dong Chuan RoadShanghai 200240People’s Republic of China Advanced Nano-Processing Engineering Lab Mechanical Systems EngineeringKogakuin UniversityTokyo 192-0015Japan

Developing advanced thermal interface materials(TIMs)to bridge heat-generating chip and heat sink for constructing an efficient heat transfer interface is the key technology to solve the thermal management issue of high-power semiconductor devices.Based on the ultra-high basal-plane thermal conductivity,graphene is an ideal candidate for preparing high-performance TIMs,preferably to form a vertically aligned structure so that the basal-plane of graphene is consistent with the heat transfer direction of TIM.However,the actual interfacial heat transfer efficiency of currently reported vertically aligned graphene TIMs is far from satisfactory.In addition to the fact that the thermal conductivity of the vertically aligned TIMs can be further improved,another critical factor is the limited actual contact area leading to relatively high contact thermal resistance(20-30 K mm^(2) W^(−1))of the“solid-solid”mating interface formed by the vertical graphene and the rough chip/heat sink.To solve this common problem faced by vertically aligned graphene,in this work,we combined mechanical orientation and surface modification strategy to construct a three-tiered TIM composed of mainly vertically aligned graphene in the middle and micrometer-thick liquid metal as a cap layer on upper and lower surfaces.Based on rational graphene orientation regulation in the middle tier,the resultant graphene-based TIM exhibited an ultra-high thermal conductivity of 176 W m^(−1) K^(−1).Additionally,we demonstrated that the liquid metal cap layer in contact with the chip/heat sink forms a“liquid-solid”mating interface,significantly increasing the effective heat transfer area and giving a low contact thermal con-ductivity of 4-6 K mm^(2) W^(−1) under packaging conditions.This finding provides valuable guidance for the design of high-performance TIMs based on two-dimensional materials and improves the possibility of their practical application in electronic thermal management.

关键词： Vertically aligned graphene Liquid metal Surface modification Thermal interface materials

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蓝靛果多酚提取物保肝、保肾的药效研究

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哈尔滨商业大学学报（自然科学版） 2024年第1期40卷 9-18,31页

作者：杨智惠李嘉欣王金宏宋辉宗政胡扬李文兰哈尔滨商业大学药学院哈尔滨150076

研究蓝靛果多酚提取物对四氯化碳(CCl_(4))、顺铂诱导的急性肝损伤、急性肾损伤小鼠的保护作用,为蓝靛果多酚提取物保肝保肾作用以及蓝靛果相关健康产品的研发与临床应用提供理论依据.选择CCl_(4)诱导小鼠肝损伤、顺铂诱导小鼠肾损伤动... 详细信息

研究蓝靛果多酚提取物对四氯化碳(CCl_(4))、顺铂诱导的急性肝损伤、急性肾损伤小鼠的保护作用,为蓝靛果多酚提取物保肝保肾作用以及蓝靛果相关健康产品的研发与临床应用提供理论依据.选择CCl_(4)诱导小鼠肝损伤、顺铂诱导小鼠肾损伤动物模型,灌胃蓝靛果多酚提取物,检测各组小鼠组织形态学、脏器指数、血清中肝、肾功能指标和氧化应激指标的变化.结果表明,与模型组相比,蓝靛果多酚提取物能够降低肝、肾损伤小鼠的组织损伤程度,改善肝、肾细胞病理现象,调节肝、肾相关功能,提高抗氧化指标.因此,蓝靛果多酚提取物具有保肝、保肾的作用,对于健康产品开发和临床应用具有重要意义.

关键词：蓝靛果多酚提取物保肝保肾药效研究

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