检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

汉麻黄酮提取液整理苎麻织物的抗紫外性能

印染 2024年第8期50卷 46-49页

作者：李思雨李凯悦李芷欣周爱琴黎征帆张尚勇武汉纺织大学纺织科学与工程学院湖北武汉430200 宁波宜阳宾霸纺织品有限公司浙江宁波315700

从汉麻加工的废弃物二粗落麻中提取黄酮,采用红外及紫外光谱对提取物的结构与性能进行表征,并将其应用于苎麻织物的功能整理。探讨了阳离子改性前处理工艺、抗紫外整理温度和时间、整理液pH、媒染方式对织物抗紫外性能的影响,并研究了... 详细信息

从汉麻加工的废弃物二粗落麻中提取黄酮,采用红外及紫外光谱对提取物的结构与性能进行表征,并将其应用于苎麻织物的功能整理。探讨了阳离子改性前处理工艺、抗紫外整理温度和时间、整理液pH、媒染方式对织物抗紫外性能的影响,并研究了苎麻织物的抗氧化性能。结果表明:黄酮提取液具有良好的紫外吸收及抗氧化性能;采用预媒染工艺对阳离子改性苎麻织物进行整理,在整理液pH为3、整理温度90℃、整理时间1 h的条件下,织物的UPF值为49.81,自由基清除率达89.4%,且水洗后仍保持良好的抗紫外和抗氧化性能。

关键词：抗紫外整理汉麻二粗落麻黄酮阳离子改性苎麻织物

添加CeO_(2)对激光熔覆Ni基/WC复合涂层的影响

在线全文

学校读者我要写书评

暂无评论

激光技术 2024年第4期48卷 542-548页

作者：梁飞龙李凯玥师文庆朱志凯何启浪广东海洋大学船舶与海运学院湛江524005 广东海洋大学电子与信息工程学院湛江524088 广东海洋大学材料科学与工程学院阳江529500 广东省南海海洋牧场智能装备重点实验室湛江524088

为了提高Q235钢材在海水中的耐腐蚀性能,扩大其应用场合,使其能够服役于富含Cl离子的海洋环境,采用激光熔覆技术,在Q235钢表面制备出添加不同质量分数CeO_(2)改性的Ni基/WC复合熔覆层,并利用扫描电镜、能谱仪和电化学工作站等仪器对熔... 详细信息

为了提高Q235钢材在海水中的耐腐蚀性能,扩大其应用场合,使其能够服役于富含Cl离子的海洋环境,采用激光熔覆技术,在Q235钢表面制备出添加不同质量分数CeO_(2)改性的Ni基/WC复合熔覆层,并利用扫描电镜、能谱仪和电化学工作站等仪器对熔覆层的组织与性能进行了测试。结果表明,适量CeO_(2)的加入可以促进晶粒细化与组织的均匀分布,提高熔覆层在NaCl溶液(质量分数为3.5%)中的耐腐蚀性能;当添加的CeO_(2)质量分数达到1%时,熔覆层具有最高的平均硬度与最好的耐海水腐蚀性能;过高的CeO_(2)含量则会加剧电偶腐蚀效应,降低其耐腐蚀性能。该研究为后续在Q235钢材表面制备耐腐蚀的激光熔覆合金涂层、改善合金材料表面性能提供了理论参考依据。

关键词：激光技术复合涂层激光熔覆氧化铈电化学腐蚀

OsDMI3-mediated OsUXS3 phosphorylation improves oxidative stress tolerance by modulating OsCATB protein abundance in rice

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2022年第5期64卷 1087-1101页

作者： Lan Ni Qingwen Wang Chao Chen Shuang Wang Tao Shen Jingjing Jiang Zhenzhen Cui kaiyue li Qiqing Yang Mingyi Jiang College of life Sciences National Key Laboratory of Crop Genetics and Germplasm EnhancementKey Laboratory of Crop Physiology Ecology and Production ManagementMinistry of AgricultureNanjing Agricultural UniversityNanjing 210095China Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China Hunan Agricultural UniversityChangsha 410128China

Calcium(Ca^(2+))/calmodulin(CaM)-dependent protein kinase(CCaMK)is an important positive regulator of antioxidant defenses and tolerance against oxidative ***,the underlying molecular mechanisms are largely ***,we report that the rice(Oryza sativa)CCa MK(OsDMI3)physically interacts with and phosphorylates OsUXS3,a cytosol-localized UDP-xylose *** and biochemical evidence demonstrated that OsUXS3 acts downstream of OsDMI3 to enhance the oxidative stress tolerance conferred by higher catalase(CAT)***,OsUXS3 interacted with CAT isozyme B(OsCATB),and this interaction was required to increase OsCATB protein abundance under oxidative stress ***,we showed that OsDMI3 phosphorylates OsUXS3 on residue Ser-245,thereby further promoting the interaction between OsUXS3 and *** results indicate that OsDMI3 promotes the association of OsUXS3 with OsCATB to enhance CAT activity under oxidative *** findings reveal OsUXS3 as a direct target of OsDMI3 and demonstrate its involvement in antioxidant defense.

关键词： Ca2+/calmodulin-dependent protein kinase catalase oxidative stress rice UDP-xylose synthase

Dimensional reduction enhances photocatalytic carbon dioxide reduction performance of metal-organic frameworks

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第5期17卷 3653-3659页

作者： kaiyue Ma Jixin li Jinlu liu Chunguang li Zhan Shi Shouhua Feng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China

Metal-organic frameworks(MOFs)have shown significant potential as *** has been widely assumed that all catalytic active sites within MOFs are functional in photocatalytic reactions but for a three-dimensional MOF,whether the internal catalytic active sites can effectively absorb light and actively contribute to photocatalytic reactions remains to be *** this context,we synthesized a two-dimensional nanosheet MOF(2D-MOF)and a three-dimensional bulk MOF(3D-MOF)composed of Zr^(6) clusters and tetracarboxylic porphyrin(TCPP)by the approach described in the ***(bpy)(CO)^(3)Cl(bpy=2,2’-bipyridine),which has remarkable CO_(2) photoreduction ability,was introduced to the two MOFs to create two new photocatalysts 2D-MOF-Re and 3D-MOF-Re,*** CO_(2) reduction experiments show that based on the equal number of catalytic active sites,the CO turnover number(TON)of 2D-MOF-Re reaches 27.8 in 6 h,which is 50 times that of *** result shows that certain catalytic active sites inside the bulk MOF are inactive due to the inability to absorb *** study illuminates the potential of the dimensional reduction approach in the design of photocatalysts to exploit the capabilities fully.

关键词： photocatalysis CO_(2)reduction metal-organic frameworks(MOFs) nanosheets light absorption

Carbon Monoxide Modulates Auxin Transport and Nitric Oxide Signaling in Plants under Iron Deficiency Stress

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2024年第1期93卷 45-61页

作者： kaiyue Hong Yasmina Radani Waqas Ahmad Ping li Yuming Luo Jiangsu Key Laboratory for Eco-Agricultural Biotechnology around Hongze Lake Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental ProtectionHuaiyin Normal UniversityHuaian223300China School of life Sciences Nanjing Forestry UniversityNanjing210037China School of life Sciences Shanghai UniversityShanghai200444China

Carbon monoxide(CO)and nitric oxide(NO)are signal molecules that enhance plant adaptation to environmental *** is an essential phytohormone for plant growth and *** and NO play crucial roles in modulating the plant’s response to iron *** deficiency leads to an increase in the activity of heme oxygenase(HO)and the subsequent generation of ***,it alters the polar subcellular distribution of Pin-Formed 1(PIN1)proteins,resulting in enhanced auxin *** alteration,in turn,leads to an increase in NO ***,iron deficiency enhances the activity of ferric chelate reductase(FCR),as well as the expression of the Fer-like iron deficiency-induced transcription factor 1(FIT)and the ferric reduction oxidase 2(FRO2)genes in plant *** of the long hypocotyl 1(HY1)gene,which encodes heme oxygenase,or the CO donor treatment resulted in enhanced basipetal auxin transport,higher FCR activity,and the expression of FIT and FRO2 genes under Fe ***,a potential mechanism is proposed:CO and NO interact with auxin to address iron deficiency *** alters auxin transport,enhancing its accumulation in roots and up-regulating key iron-related genes like FRO2 and *** auxin levels affect NO signaling,leading to greater sensitivity in root *** interplay promotes FCR activity,which is crucial for iron ***,these molecules enhance iron uptake and root growth,revealing a novel aspect of plant physiology in adapting to environmental stress.

关键词： Carbon monoxide nitric oxide auxin iron deficiency signal molecule plants

3-Epi-betulinic acid 3-O-β-D-glucopyranoside(eBAG)induces autophagy by activation of AMP-activated protein kinase in hepatocellular carcinoma

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Science and Human Wellness 2024年第3期13卷 1453-1464页

作者： Mengjie liu Xuqiang liu kaiyue He Yongping Jian Yujia li Jinrong Guo Jingyu Yang Zhixiang Xu Wenyi Kang School of life Sciences Henan UniversityKaifeng 475004China National R&D Center for Edible Fungus Processing Technology Henan UniversityKaifeng 475004China Joint International Research Laboratory of Food&Medicine Resource Function Kaifeng 475004China Shenzhen Research Institute of Henan University Shenzhen 518000China

3-Epi-betulinic acid 3-O-β-D-glucopyranoside(eBAG)is a pentacyclic triterpene mainly distributed in food and medicinal plants,which exhibits various pharmacological ***,whether these functions are attributed to eBAG or additional components in these plants remain ***,we report that eBAG exerted an inhibitory activity against hepatocellular carcinoma and esophageal cancer *** induced non-apoptotic cell death in hepatocellular carcinoma *** eBAG-induced cell death was inhibited by knock-down of autophagy related gene(ATG)5 and ATG7,by administration of 3-methyladenine,a selective autophagy inhibitor that suppresses phosphoinositide 3-kinase(PI3K),and by chloroquine,a classic autophagy flux *** demonstrated that eBAG induced an autophagy-mediated cell *** of eBAG mimicked cellular bioenergetics depletion leading to the reduction of intracellular ATP,activation of AMP-activated protein kinase(AMPK),and inhibition of ***-treatment with compound C,an AMPK inhibitor,abrogated cell death induced by *** further validated the anti-tumor effect of eBAG in the murine xenograft model of hepatocellular carcinoma and found that eBAG treatment promoted the induction of autophagy and reduction of tumor growth in *** a functional food ingredient,eBAG is a potential therapeutic agent for the treatment of hepatocellular carcinoma and esophageal cancer.

关键词： eBAG Autophagy ATP AMPK Hepatocellular carcinoma

4.8 nm Concave {M_(72)}(M=Co,Ni,Fe) metal-organic polyhedra capped by 18 calixarenes

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2021年第3期64卷 426-431页

作者： Haitao Han liang Kan Ping li Guoshuai Zhang kaiyue li Wuping liao Yunling liu Wei Chen Chunhua T.Hu State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Department of Chemistry New York University100 Washington Square EastRoom 1001New YorkNY 10003USA University of Chinese Academy of Sciences Beijing 100049China

Three 4.8 nm isostructural{M_(72)}(M=Co^(Ⅱ) for CIAC-128,Ni^(Ⅱ) for CIAC-129,Fe^(Ⅱ) for CIAC-130) metal-organic polyhedra(MOPs) are constructed by eighteen M_(4)-p-tert-butylthiacalix[4]arene (M_(4)-TC4A) units bridged via sixteen four-connected 5,5′-(1H-1,2,4-triazole-3,5-diyl) diisophthalic acid (H_(4)TADIPA) *** MOPs are featured with a rarely reported concave coordination cage,which can be simplified as a squeezed double-decker hexagonal prism pressed from the top and bottom hexagonal ***,CIAC-128,CIAC-129 and CIAC-130 are the highest nuclearity discrete clusters of Co,Ni and Fe reported so ***-128 has higher separation selectivity of C_(3)H_(8) than CH_(4) under ambient conditions,and also exhibits separation selectivity for C_(2)H_(6)/CH_(4),C_(2)H_(2)/CH_(4),and C_(2)H_(4)/CH_(4).In addition,CIAC-128 can provide the cavity for the confined synthesis of noble metal nanoclusters such as Pd nanoclusters and the resulting Pd@CIAC-128 hybrids show higher electrocatalytic activity than commercial Pt/C towards hydrogen evolution reaction (HER).

关键词： cluster compounds thiacalixarene gas separation template synthesis nanoparticles

双重性与契合性意向:虚拟现实艺术交互设计的现象学理论转向

在线全文

学校读者我要写书评

暂无评论

南京艺术学院学报（美术与设计） 2022年第3期 126-132页

作者：李恺悦李栋宁江南大学设计学院江苏无锡214122

借由现象学意向性理论对虚拟现实艺术交互设计方法进行理论关照,清晰了虚拟现实艺术设计师与体验者各自具足的“意识感知”和“互动行为”的相互含韵与互文置换的结构特点,确立了虚拟现实艺术设计的双重性意向结构的理论指向。意向性在... 详细信息

借由现象学意向性理论对虚拟现实艺术交互设计方法进行理论关照,清晰了虚拟现实艺术设计师与体验者各自具足的“意识感知”和“互动行为”的相互含韵与互文置换的结构特点,确立了虚拟现实艺术设计的双重性意向结构的理论指向。意向性在交互行为中的理论显现,展示出虚拟现实艺术信息反馈与接收的“契合性”意向结构特征。设计师所表现出的意义创造与情感表达,在体验者介入互动所历经的逐次意向性层级参与中,“契合性”地共同完成了虚拟现实艺术作品的最终共同意义构建。是此,契合性意向是虚拟现实艺术交互行为深层次的意识动因与本质直观。

关键词：虚拟现实艺术现象学意识性交互行为契合性意向

美国大学继续教育的演进脉络、实践经验与启示

在线全文

学校读者我要写书评

暂无评论

职教论坛 2022年第7期38卷 94-101页

作者：孙长远李凯月曲阜师范大学继续教育学院

美国大学继续教育的发展大致可以分为初始化时期、专业化时期和多元化时期,并在历史演变中形成了诸多值得借鉴的经验。美国大学继续教育具有完善的教育制度建设、多元的经费来源渠道、嵌入市场的办学结构、“双轨并行”的运行机制、不... 详细信息

美国大学继续教育的发展大致可以分为初始化时期、专业化时期和多元化时期,并在历史演变中形成了诸多值得借鉴的经验。美国大学继续教育具有完善的教育制度建设、多元的经费来源渠道、嵌入市场的办学结构、“双轨并行”的运行机制、不断更新的教学内容和技术等优势,这对我国高校继续教育发展提供了有益的启示。有鉴于此,我国高校继续教育应不断夯实教育制度基础、拓展经费投入渠道、融合多元市场要素、融通“普教”与“继教”、创新教学实践,以提高我国高校继续教育的治理效能,助推我国高校继续教育又好又快发展。

关键词：美国大学继续教育高校继续教育