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Synthesis of novel calix[4]crown telomers and selective extraction of cesium ions

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Chinese Chemical Letters 2007年第3期18卷 263-265页

作者： Hai Bing Li Yuan Yin Chen De Jun Xiong Jun Yan Zhan cui ping han Key Laboratory of Pesticide ＆ Chemical Biology （CCNU） Ministry of Education College of Chemistry Central China Normal University Wuhan 430079 China Department of Chemistry Wuhan University Wuhan 430072 China

p-tert-Butylcalix[4]diazacrown-4 telomer, which contains hard and soft ion binding sites, was synthesized. It exhibited high selectivity toward cesium ions. The binding sites may complex alkali metal ions selectively.

关键词： Calixcrown Telomer Ion-binding Cesium ions

Constructing highly safe and long-life calcium ion batteries based on hydratedvanadium oxide cathodes featuring a pillar structure

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Rare Metals 2024年第6期43卷 2597-2612页

作者： Chun-Fang Wang Shi-Wei Zhang Lan Huang Yuan-Min Zhu Feng Liu Jian-Chuan Wang Li-Ming Tan Chun-Yi Zhi cui-ping han Powder Metallurgy Research Institute Central South UniversityChangsha410083China Songshan Lake Materials Laboratory Dongguan 523808China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Calcium-ion batteries(CIBs)have generated intense interest due to the growing demand for safer,cheaper,and large-scale energy storage ***,their development is still in its infancy,owing to the lack of suitable cathodes for sustaining reversiblc Ca^(2+)intercalation/***,layered H_(2)V_(3)O_(8)(HVO)with Zn^(2+)pre-insertion(ZHVO)is reported as a high-rate and highly durable cathode material for *** existence of Zn^(2+)and H_(2)O pillars could expand the interlayer spacing up to 1.8 nm,which is favorable for the diffusion of bulky Ca^(2+).The formation of Zn-O bonds facilitates electron transfer and enhances electrical ***,the ZHVO cathode achieves superior capacity performance(213.9 mAh·g^(-1)at 0.2 A·g^(-1))and long lifespan(78.3%for 1,000 cycles at 5 A·g^(-1))compared to pristine *** functional theory(DFT)calculations revealed that Zn^(2+)moved during Ca^(2+)intercalation,thereby reducing the diffusion energy barrier and facilitating Ca^(2+)***,a safe aqueous calcium ion cell was successfully assembled.

关键词： Multivalent batteries Calcium-ion batteries Layered structure Vanadium oxide Cathode materials

Synergistic promotion strategy of “dual-site” and “dual-path” to enhance the C–C coupling between CO2 and HCHO driven by photoelectrocatalysis

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Journal of Energy Chemistry 2025年第1期100卷 39-49页

作者： Hongqiang Yang Jianfeng Zheng Guoyu Wang Yifei Gao Yatao Yang Jia Li Xiaojin han Yan cui Zhanggen Huang National Key Laboratory of High Efficiency and Low Carbon Utilization of Coal Institute of Coal Chemistry Chinese Academy of Science University of Chinese Academy of Science Shenyang University of Chemical Technology

Photoelectrocatalytic coupling CO2and volatile organic compounds （VOCs） is a promising green strategy for the synergistic conversion of the two carbon-containing resources to *** catalytic efficiency is always at the mercy of chemical inertness of CO2and the competitive hydrogen evolution of ***,a modified g-C3N4/ZnAl-LDH Z-scheme heterojunction catalyst with dual reaction site was rationally designed and precisely *** Faraday efficiency of ethanol reached 68.67%with a corresponding formation rate of 227.3μmol *** revealed by in-situ characterizations and density functional theory calculations,CO2and HCHO were absorbed at Zn site and N site,***,*CO generated from CO2and HCHO was converted to*CH3O and*CHO on the dual-active-site *** detailed reaction mechanism experiments indicated that C–C coupling only occurred between*CO and*CH3O in electrocatalysis *** from the“*CO+*CH3O”path,another“*CO+*CHO”coupling path was also detected in photoelectrocatalytic *** selectivity of ethanol was significantly enhanced due to the synthesis of dual-site catalyst and the dual-path coupling path between CO2and HCHO simultaneously driven by light and electricity.

关键词： Photoelectrocatalysis Z-scheme C–C coupling Ethanol

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体育旅游对国民经济和社会发展的作用

天津体育学院学报 2000年第2期15卷 42-44页

作者：韩鲁安崔继安和平韩丁天津体育学院天津300381

采用文献资料等研究方法 ,分析、论述了体育旅游对国民经济和社会发展的功能与作用。提出体育旅游是旅游业与体育产业交叉融合而产生的新兴朝阳产业 ;发展体育旅游对丰富和促进旅游的发展、带动和促进体育产业的发展、推动国民经济和社... 详细信息

采用文献资料等研究方法 ,分析、论述了体育旅游对国民经济和社会发展的功能与作用。提出体育旅游是旅游业与体育产业交叉融合而产生的新兴朝阳产业 ;发展体育旅游对丰富和促进旅游的发展、带动和促进体育产业的发展、推动国民经济和社会发展具有重要意义。

关键词：体育旅游体育产业国民经济社会发展

Effects of Bifidobacterium lactis BLa80 on fecal and mucosal flora and stem cell factor/c-kit signaling pathway in simulated microgravity rats

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World Journal of Gastroenterology 2025年第1期31卷 93-109页

作者： ping Zhang Ying Zhu Pu Chen Tong Zhou Zhe-Yi han Jun Xiao Jian-Feng Ma Wen Ma Peng Zang Ying Chen Graduate School Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Key Laboratory of Aerospace Nutrition and Food Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Gastroenterology The Air Force Medical CenterBeijing 100142China Department of Blood Transfusion Air Force Medical CenterBeijing 100142China

BACKGROUND Simulated microgravity environment can lead to gastrointestinal motility *** pathogenesis of gastrointestinal motility disorders is closely related to the stem cell factor(SCF)/c-kit signaling pathway associated with intestinal flora and Cajal stromal ***,intestinal flora can also affect the regulation of SCF/c-kit signaling pathway,thus affecting the expression of Cajal stromal *** cells are the pacemakers of gastrointestinal *** To investigate the effects of Bifidobacterium lactis(***)BLa80 on the intestinal flora of rats in simulated microgravity and on the gastrointestinal motility-related SCF/c-kit *** The internationally recognized tail suspension animal model was used to simulate the microgravity environment,and 30 rats were randomly divided into control group,tail suspension group and drug administration tail suspension group with 10 rats in each group for a total of 28 *** tail group was given *** BLa80 by intragastric administration,and the other two groups were given water intragastric administration,the concentration of intragastric administration was 0.1 g/mL,and each rat was 1 mL/***&eosin staining was used to observe the histopathological changes in each segment of the intestine of each group,and the expression levels of SCF,c-kit,extracellular signal-regulated kinase(ERK)and p-ERK in the gastric antrum of each group were detected by Western blotting and *** fecal flora and mucosal flora of rats in each group were detected by 16S *** Simulated microgravity resulted in severe exfoliation of villi of duodenum,jejunum and ileum in rats,marked damage,increased space between villi,loose arrangement,shortened columnar epithelium of colon,less folds,narrower mucosal thickness,reduced goblet cell number and crypts,and significant improvement after probiotic *** microgravity reduced the expressions of SCF and c-kit,and increased the express

关键词： Simulated microgravity Rat Intestinal flora Gastrointestinal motility Stem cell factor/c-kit signaling pathway

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虫草素对人肝癌细胞迁移及侵袭的机制研究

中国现代医学杂志 2020年第17期30卷 7-12页

作者：李辉刘登湘韩翠平邢台市人民医院肝胆外科河北邢台054031 邢台市人民医院放疗科河北邢台054031 邢台市人民医院CT室河北邢台054031

目的研究虫草素对人肝癌细胞Bel-7402迁移和侵袭的影响,并探讨其作用机制。方法以人肝癌细胞Bel-7402为研究对象,虫草素处理Bel-7402细胞。MTT法检测细胞活力;划痕实验检测细胞迁移能力;侵袭小室实验检测细胞侵袭能力;实时荧光定量聚合... 详细信息

目的研究虫草素对人肝癌细胞Bel-7402迁移和侵袭的影响,并探讨其作用机制。方法以人肝癌细胞Bel-7402为研究对象,虫草素处理Bel-7402细胞。MTT法检测细胞活力;划痕实验检测细胞迁移能力;侵袭小室实验检测细胞侵袭能力;实时荧光定量聚合酶链反应(qRT-PCR)检测MMP-2和MMP-9 mRNA表达情况;Western blotting实验检测MMP-2、MMP-9、ERK、p-ERK、EGFR及p-EGFR蛋白表达水平。结果虫草素在0~80μmol/L时对细胞活力无明显影响;而在80~640μmol/L时,细胞活力出现下降;在320和640μmol/L时显著降低(P<0.05)。40和80μmol/L虫草素均能显著抑制细胞迁移和侵袭活动(P<0.05)。与空白对照组比较,虫草素(40和80μmol/L)处理Bel-7402细胞48 h后,MMP-2和MMP-9 mRNA及蛋白表达均下降(P<0.05)。与空白对照组比较,虫草素(40和80μmol/L)处理明显下调p-ERK和p-EGFR蛋白表达(P<0.05)。结论虫草素可能通过EGFR-ERK通路介导MMP-2和MMP-9表达下调,从而调控人肝癌细胞Bel-7402的迁移和侵袭活动。

关键词：肝肿瘤虫草素迁移侵袭机制

Human-induced pluripotent stem cell-derived neural stem cell exosomes improve blood-brain barrier function after intracerebral hemorrhage by activating astrocytes via PI3K/AKT/MCP-1 axis

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Neural Regeneration Research 2025年第2期20卷 518-532页

作者： Conglin Wang Fangyuan Cheng Zhaoli han Bo Yan Pan Liao Zhenyu Yin Xintong Ge Dai Li Rongrong Zhong Qiang Liu Fanglian Chen ping Lei Department of Geriatrics Tianjin Medical University General HospitalTianjinChina School of Medicine Nankai UniversityTianjinChina Tianjin Neurological Institute TianjinChina

Cerebral edema caused by blood-brain barrier injury after intracerebral hemorrhage is an important factor leading to poor ***-induced pluripotent stem cell-derived neural stem cell exosomes(hiPSC-NSC-Exos)have shown potential for brain injury repair in central nervous system *** this study,we explored the impact of hiPSC-NSC-Exos on blood-brain barrier preservation and the underlying *** results indicated that intranasal delivery of hiPSC-NSC-Exos mitigated neurological deficits,enhanced blood-brain barrier integrity,and reduced leukocyte infiltration in a mouse model of intracerebral ***,hiPSC-NSC-Exos decreased immune cell infiltration,activated astrocytes,and decreased the secretion of inflammatory cytokines like monocyte chemoattractant protein-1,macrophage inflammatory protein-1α,and tumor necrosis factor-αpost-intracerebral hemorrhage,thereby improving the inflammatory *** sequencing indicated that hiPSC-NSC-Exo activated the PI3K/AKT signaling pathway in astrocytes and decreased monocyte chemoattractant protein-1 secretion,thereby improving blood-brain barrier *** with the PI3K/AKT inhibitor LY294002 or the monocyte chemoattractant protein-1 neutralizing agent C1142 abolished these *** summary,our findings suggest that hiPSC-NSC-Exos maintains blood-brain barrier integrity,in part by downregulating monocyte chemoattractant protein-1 secretion through activation of the PI3K/AKT signaling pathway in astrocytes.

关键词： AKT astrocyte blood-brain barrier cerebral edema exosomes human-induced pluripotent stem cells intracerebral hemorrhage neural stem cells neuroinflammation PI3K

Preparation and applications of calcium ferrite as a functional material:A review

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 292-310页

作者： Xiuli han Bowen Duan Lei Liu Shilong Fang Weiwei Wang College of Mining Engineering North China University of Science and TechnologyTangshan 063210China Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources of Hebei Province Tangshan 063210China Key Laboratory of Mining Development and Security Technology of Hebei Province Tangshan 063210China

Calcium ferrite(CF)is recognized as a potential green and efficient functional material because of its advantages of magnetism,electrochemistry,catalysis,and biocompatibility in the fields of materials chemistry,environmental engineering,and ***-fore,the obtained research results need to be systematically summarized,and new perspectives on CF and its composite materials need to be *** on the presented studies of CF and its composite materials,the types and structures of the crystal are *** addition,the current application technologies and theoretical mechanisms with various properties in different fields are ***,the various preparation methods of CF and its composite materials are elaborated in *** importantly,the advantages and disadvantages of the synthesis methods of CF and its composite materials are discussed,and the existing problems and emerging challenges in practical production are ***,the key future research directions of CF and its composite materials have been prospected from the potential application technologies to provide references for its synthesis and efficient utilization.

关键词： calcium ferrite mineral functional materials preparation application perspectives

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内蒙古荒漠草原人工草地固碳效应分析

中国草地学报 2017年第4期39卷 81-85页

作者：高翠萍韩国栋王忠武李治国任海燕内蒙古农业大学草地资源教育部重点实验室内蒙古呼和浩特010011

以内蒙古荒漠草原9种人工草地为研究对象,研究了植物和土壤的固碳能力差异。结果表明:与天然草地相比,四子王旗荒漠草原区人工草地可以有效地增加土壤碳储量,并且以紫花苜蓿、柠条和小叶锦鸡儿人工草地的固碳能力最强;且该地区各类草地... 详细信息

以内蒙古荒漠草原9种人工草地为研究对象,研究了植物和土壤的固碳能力差异。结果表明:与天然草地相比,四子王旗荒漠草原区人工草地可以有效地增加土壤碳储量,并且以紫花苜蓿、柠条和小叶锦鸡儿人工草地的固碳能力最强;且该地区各类草地植物根系主要集中在0~30cm,地下生物量均高于地上生物量。地上草产量最高的为谷草、紫花苜蓿和青莜麦;地下生物量则以紫花苜蓿、小叶锦鸡儿和柠条人工草地最高。在内蒙古西部地区,种植紫花苜蓿、小叶锦鸡儿和柠条等豆科植物可以有效地促进土壤碳库的积累。

关键词：荒漠草原固碳效应人工草地