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Journal of Magnesium and Alloys 2024年第1期12卷 197-208页

作者： Yingyan Zhao Zhibing liu Jiangchuan liu Yunfeng Zhu Jiguang Zhang yana liu Xiaohui Hu Liquan Li College of Materials Science and Engineering Nanjing Tech University30 South Puzhu RoadNanjing211816PR China Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites Nanjing Tech UniversityNanjing211816PR China

The hydrogen absorption/desorption kinetic properties of MgH_(2)can be effectively enhanced by doping specific *** this work,MOFs-derived NiCu@C nanoparticles(~15 nm)with regular core-shell structure were successfully prepared and introduced into MgH_(2)(denoted as MgH_(2)-NiCu@C).The onset and peak temperatures of hydrogen desorption of MgH_(2)-11 wt.%NiCu@C are 175.0℃and282.2℃,*** apparent activation energy of dehydrogenated reaction is 77.2±4.5 kJ/mol for MgH_(2)-11 wt.%NiCu@C,which is lower than half of that of the as-milled MgH_(2).Moreover,MgH_(2)-11 wt.%NiCu@C displays great cyclic *** strengthening"hydrogen pumping"effect of reversible solid solutions Mg_(2)Ni(Cu)/Mg_(2)Ni(Cu)H_(4)is proposed to explain the remarkable improvement in hydrogen absorption/desorption kinetic properties of MgH_(2).This work offers a novel perspective for the design of bimetallic nanoparticles and beyond for application in hydrogen storage and other energy related fields.

关键词： Magnesium hydride Reversible solid solution Core-shell nanoparticles Hydrogen storage performance

Transcriptome and proteome analysis reveals the characteristics of carbon metabolism in the mycelial development of Gomphus purpuraceus

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Food Science and Human Wellness 2024年

作者： Yangyang Geng Shixin Zhang yana liu Likang Qin School of Liquor and Food Engineering Guizhou University Guizhou Institute of Walnut Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education) College of Life Sciences/Institute of Agro-bioengineering Guizhou University Guizhou Academy of Forestry Guizhou Industrial Technology Research Institute of Rare Edible and Medicinal Fungi co. Ltd

Gomphus purpuraceus is an ancient wild edible mushroom. However， the niche and lignocellulose degradation system of G. purpuraceus have remained cryptic. In the current study， transcriptome and proteome sequencing of G. purpuraceus in four mediums was performed. A total of 3489 differentially expressed genes (DEGs) and 891 differentially expressed proteins (DEPs) were screened out. For the lignocellulose degradation system， a total of 61 expressed genes were annotated， including 19 genes encoding cellulase， 8 genes encoding hemicellulase， 5 genes encoding pectinase， 22 genes encoding lignin oxidase， and 7 lignin degrading auxiliary enzyme. From two-omics， morphology， and enzyme activities， we speculated that G. purpuraceus might have a limited capacity to degrade polysaccharides (starch and lignocellulose). In addition， trace amount of fumonisins (FB1 and FB2) were found in the G. purpuraceus. These results provided a new perspective for understanding the key pathways and hub genes involved in carbon metabolism of G. purpuraceus development.

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Magnesium nickel hydride monocrystalline nanoparticles for reversible hydrogen storage

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Materials Reports(Energy) 2024年第1期4卷 104-112页

作者： Yingyan Zhao Yunfeng Zhu Rui Shi Jiguang Zhang yana liu Jun Wang Liquan Li College of Materials Science and Engineering Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function CompositesNanjing Tech University30 South Puzhu RoadNanjing211816PR China

Although Mg-based hydrides are extensively considered as a prospective material for solid-state hydrogen storage and clean energy carriers,their high operating temperature and slow kinetics are the main challenges for practical ***,a Mg-Ni based hydride,Mg_(2)NiH_(4) nanoparticles(~100 nm),with dual modification strategies of nanosizing and alloying is successfully prepared via a gas-solid preparation *** is demonstrated that Mg_(2)NiH_(4) nanoparticles form a unique chain-like structure by oriented stacking and exhibit impressive hydrogen storage performance:it starts to release H2 at~170℃ and completes below 230℃ with a saturated capacity of 3.32 wt%and desorbs 3.14 wt% H_(2) within 1800 s at 200℃.The systematic characterizations of Mg_(2)NiH_(4) nanoparticles at different states reveal the dehydrogenation behavior and demonstrate the excellent structural and hydrogen storage stabilities during the de/hydrogenated *** research is believed to provide new insights for optimizing the kinetic performance of metal hydrides and novel perspectives for designing highly active and stable hydrogen storage alloys.

关键词： Magnesium-based hydride Chemical vapor deposition Nanoparticles Hydrogen storage performance

中国共产党引领老龄事业发展的学理基础、政策变迁与发展进路——基于老龄事业政策文本的描述性分析

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老龄科学研究 2024年第6期12卷 19-29页

作者：刘亚娜北京航空航天大学公共管理学院北京100191

中国共产党关于老龄事业发展的重要论述,是中国积极应对人口老龄化挑战的纲领性指导。基于对中国共产党历次全国党代会报告、中央全会文件关于老龄事业发展重要论述的整理回顾,发现中国共产党老龄政策是对马克思主义理论的继承、发展和... 详细信息

中国共产党关于老龄事业发展的重要论述,是中国积极应对人口老龄化挑战的纲领性指导。基于对中国共产党历次全国党代会报告、中央全会文件关于老龄事业发展重要论述的整理回顾,发现中国共产党老龄政策是对马克思主义理论的继承、发展和创新,体现了全面性、整体性特点,旨在构建以人民为中心、理想老龄社会的全系统服务体系。我国的老龄政策变迁经历了四个发展阶段。新时代我国老龄问题呈现出新特征,相关领域的政策发展及治理体系创新着力于夯实主体责任与社会动员体系,坚持党的领导、政府主导、全社会积极参与,科学合理地制定针对性的发展战略与公共政策,创新老龄工作体制机制,发展老龄事业与老龄产业。

关键词：中国共产党老龄事业政策变迁治理创新

专业认证背景下材料科学与工程专业“固体物理”课程改革探索

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科教导刊 2024年第21期 132-134页

作者：刘雅娜南京工业大学材料科学与工程学院江苏南京211816

文章基于工程教育专业认证的核心理念,即“以学生为中心”“以产出为导向”和“持续改进”,以南京工业大学材料科学与工程专业的核心课程“固体物理”为主体,进行课程教学改革及实践探索。具体改革举措为:凝练具体化、可观测的课程目标... 详细信息

文章基于工程教育专业认证的核心理念,即“以学生为中心”“以产出为导向”和“持续改进”,以南京工业大学材料科学与工程专业的核心课程“固体物理”为主体,进行课程教学改革及实践探索。具体改革举措为:凝练具体化、可观测的课程目标;实行成果导向延展教学内容,并积极融入思政元素;建立“以学生为中心”的混合式教学与线上指导相结合的教学模式;围绕学习成果产出改革考核评价体系。本研究成果可在一些理论性强的专业课教学中推广。

关键词：工程教育专业认证固体物理教学改革

宫颈托预防自发性早产的单中心前瞻性队列研究

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四川大学学报（医学版） 2024年第4期55卷 1007-1013页

作者：薛志伟刘亚娜王棵杨琳怡阮洁刘兴会周淑四川大学华西第二医院产科成都610041 出生缺陷与相关妇儿疾病教育部重点实验室(四川大学) 成都610041

目的针对宫颈管短的单胎孕妇,比较宫颈托和阴道凝胶治疗预防早产的临床效果。方法本研究为前瞻性队列研究。纳入2020年8月–2022年12月,四川大学华西第二医院收治的28孕周前超声提示宫颈管长度(cervical length,CL)≤25 mm的148名孕... 详细信息

目的针对宫颈管短的单胎孕妇,比较宫颈托和阴道凝胶治疗预防早产的临床效果。方法本研究为前瞻性队列研究。纳入2020年8月–2022年12月,四川大学华西第二医院收治的28孕周前超声提示宫颈管长度(cervical length,CL)≤25 mm的148名孕妇。根据治疗方案将孕妇分为宫颈托组(n=55)或孕激素两组(n=93)。以37孕周前自发性早产(包括流产)为主要结局指标;37、34、32、30、28孕周前早产(包括治疗性早产、自发性早产及流产)或34、32、30、28孕周前自发性早产(包括流产)、平均延长孕周、新生儿疾病和新生儿死亡为次要结局指标。对两组孕妇的妊娠结局、新生儿结局等进行比较统计学分析。结果宫颈托组与孕激素组相比较,37、34、32、30、28孕周前早产发生率差异均无统计学意义。排除治疗性早产,37孕周前自发性早产发生率宫颈托组(23.6%)较孕激素组(41.9%)更低,且这种差异在两组间有统计学意义(P=0.024)。34、32、30、28孕周前自发性早产发生率差异无统计学意义。新生儿疾病发生率、出生后转新生儿科率和新生儿死亡率在两组之间差异均无统计学意义。多因素logsitic分析发现,相对于孕激素治疗,采用宫颈托是预防孕妇37孕周前自发性早产的保护因素。结论孕中期宫颈管短的单胎孕妇使用宫颈托治疗预防自发性早产能够显著降低37孕周前的自发性早产发生率。

关键词：宫颈托早产自发性早产孕激素妊娠结局

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核桃叶及其乙醇提取物化学成分分析

食品与机械 2024年第6期40卷 164-169页

作者：何佳丽胡恩明王纪辉胡伯凯刘亚娜贵州省核桃研究所贵州贵阳550000 贵州省林业科学研究院贵州贵阳550000 中国科学院天然产物化学重点实验室贵州贵阳550002

[目的]探明核桃叶的化学成分。[方法]利用固相微萃取(SPME)技术结合气相色谱—质谱法(GC-MS),以及超高效液相色谱—四极杆—静电场轨道阱高分辨质谱联用技术(UPLC-Q-exactive),分别对核桃叶中的挥发性成分和乙醇提取物的化学成分进行鉴... 详细信息

[目的]探明核桃叶的化学成分。[方法]利用固相微萃取(SPME)技术结合气相色谱—质谱法(GC-MS),以及超高效液相色谱—四极杆—静电场轨道阱高分辨质谱联用技术(UPLC-Q-exactive),分别对核桃叶中的挥发性成分和乙醇提取物的化学成分进行鉴定分析。[结果]核桃叶中含88个挥发性成分,主要为萜类化合物,其中倍半萜占挥发性成分含量的78.35%;乙醇提取物中功能成分达30种,其中多酚类物质20种(黄酮类12种),苯丙素类4种,五环三萜类3种,必需氨基酸2种,三羧酸类化合物1种。[结论]SPME-GC-MS和UPLC-Q Exactive技术的联合使用可以系统、准确、快速地测定和分析核桃叶的化学成分。

关键词：核桃叶固相微萃取气相色谱—质谱法超高效液相色谱—四极杆—静电场轨道阱高分辨质谱联用技术化学成分

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预防性McDonald术对宫颈纵隔切开术后宫颈机能不全的治疗效果

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郑州大学学报（医学版） 2024年第1期59卷 12-15页

作者：毛萌刘亚娜付翰林王倩白晶郭瑞霞郑州大学第一附属医院妇科郑州450052

目的:探讨预防性宫颈环扎术对宫颈纵隔切开术后宫颈机能不全(CIC)的治疗效果。方法:收集2012年9月至2022年12月在郑州大学第一附属医院行预防性McDonald术的宫颈纵隔切开术后CIC的患者共20例(纵隔组),均为单胎妊娠。从同时间段在该院行... 详细信息

目的:探讨预防性宫颈环扎术对宫颈纵隔切开术后宫颈机能不全(CIC)的治疗效果。方法:收集2012年9月至2022年12月在郑州大学第一附属医院行预防性McDonald术的宫颈纵隔切开术后CIC的患者共20例(纵隔组),均为单胎妊娠。从同时间段在该院行预防性McDonald术的非子宫畸形单胎妊娠的CIC患者中,采用倾向性评分匹配法(最近邻匹配法,1∶1匹配)选取20例(非畸形组)。比较两组的疗效,包括妊娠结局、分娩方式及新生儿情况等。结果:两组基线资料差异无统计学意义。纵隔组和非畸形组的活产率分别为15/20和18/20,低出生体重儿率分别为6/15和5/18,差异均无统计学意义(P>0.05)。纵隔组的足月产率(25%)低于非畸形组(60%,P<0.05)。结论:预防性McDonald术对宫颈纵隔切开术后CIC患者是可行的,宫颈纵隔切开术后和非子宫畸形的CIC患者预防性McDonald术的疗效无明显差异。

关键词：宫颈纵隔切开术宫颈机能不全预防性McDonald术

Assisting Ni catalysis by CeO_(2) with oxygen vacancy to optimize the hydrogen storage properties of MgH_(2)

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Journal of Materials Science & Technology 2023年第28期159卷 62-71页

作者： Jiangchuan liu Qinke Tang Yunfeng Zhu yana liu Jiguang Zhang Zhixin Ba Xiaohui Hu Liquan Li College of Materials Science and Engineering Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function CompositesNanjing Tech UniversityNanjing 211816China School of Materials Science and Engineering Nanjing Institute of TechnologyNanjing 211167China

Although MgH_(2) has been widely regarded as a promising material for solid-state hydrogen storage,its high operating temperature and slow kinetics pose a major bottleneck to its practical ***,a nanocomposite catalyst with interfacial coupling and oxygen defects,Ni/CeO_(2),is fabricated to promote H_(2) desorption and absorption properties of MgH_(2).The interface of Ni/CeO_(2) contributes to both strong mechanical coupling towards stabilizing partial Ni and electronic coupling towards inducing a high con-centration of oxygen vacancies in CeO_(2).Theoretical calculations evidence that CeO_(2) with oxygen vacancy assist Ni in weakening the energy of Mg-H bond as well as enhancing the adsorption energy of Ni upon hydrogen atoms,and the extent of this assistance surprisingly increases with increasing oxygen vacancies *** a result,an impressive performance is achieved by MgH_(2)-5 wt.%Ni/CeO_(2) with onset desorption temperature of only 165°C,and it absorbs approximately 80%hydrogen in just 800 s at 125°*** generation mechanism of intermediate active species concerning Ni/CeO_(2) in different states has been analyzed for the first time,and the relationship between interfacial coupling and phase evolution has been ***,a mechanism of the catalysis-assisting effect regarding oxygen defects is *** is believed that this work provides a unique perspective on the mechanism of interfacial coupling and the generation of defects in composite catalysts.

关键词： Hydrogen storage Interfacial coupling Oxygen defects Catalysis-assisting

Facet-dependent catalytic activity of two-dimensional Ti_(3)C_(2)T_(x) MXene on hydrogen storage performance of MgH_(2)

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Journal of Magnesium and Alloys 2023年第10期11卷 3724-3735页

作者： Haiguang Gao Rui Shi yana liu Yunfeng Zhu Jiguang Zhang Liquan Li Xiaohui Hu College of Materials Science and Engineering Nanjing Tech University30 South Puzhu RoadNanjing 211816PR China Jiangsu Collaborative Innovation Centre for Advanced Inorganic Function Composites Nanjing Tech UniversityNanjing 211816PR China

Two-dimensional Ti_(3)C_(2)T_(x) MXenes exposing different active facets are introduced into MgH_(2), and their catalytic effects are systematically investigated in depth through experimental and theoretical approaches. Excluding factors such as interlayer space, surface functional groups and experimental contingency, the exposed facets is considered to be the dominant factor for catalytic activity of Ti_(3)C_(2)T_(x) towards MgH_(2).More exposed edge facets of Ti_(3)C_(2)T_(x) displays higher catalytic activity than that with more exposed basal facets, which also leads to different rate-controlling steps of MgH_(2) in the de/hydrogenation process. The low work function, strong hydrogen affinity and high content of in situ metallic Ti for the edge facet contribute the high catalytic activity. This work will give insights into the structural design of two-dimensional Ti_(3)C_(2)T_(x) MXene used for enhancing the catalytic activity in various fields.

关键词： Hydrogen storage materials Magnesium hydride MXene Catalyst Facet design