检索结果-南通市图书馆

Optimizing electronic structure of NiFe LDH with Mn-doping and Fe_(0.64)Ni_(0.36)alloy for alkaline water oxidation under industrial current density

在线全文

学校读者我要写书评

暂无评论

Nano Research 2023年第7期16卷 8953-8960页

作者： Yang Qian Fan Zhang Lingshu Qiu weiwei han Zixu Zeng Lecheng Lei Yi He Ping Li Xingwang Zhang Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University-Quzhou Quzhou 324000China

Alkaline electrolyzers for water splitting under the industrial current densities are always burdened with huge energy consumption due to the high overpotential and poor stability of the anode nanocatalysts for oxygen evolution reaction(OER).Inspired by the interfacial charge transfer for enhancing the performance,a series of in-situ grown interfacial Mn-NiFe lactate dehydrogenase(LDH)was designed on the Fe_(0.64)Ni_(0.36)/NM(nickel mesh)alloy layer.The optimized Mn_(0.15)-NiFe LDH/Fe_(0.64)Ni_(0.36)/NM exhibited an ultralow overpotential of 295 mV to drive 500 mA·cm^(-2)and an incredible stability under large current density.The interfacial space and heteroatom doping synergistically triggered the electronic structure optimization to promote electron transfer and ensure the durability of the high-current reaction.Notably,the designed Mn_(0.15)-NiFe LDH/Fe_(0.64)Ni_(0.36)/NM as an anode in an integral alkaline electrolyzer exhibited a cell voltage of 1.78 V at 500 mA·cm^(-2) with a stability of 366 h.Density functional theory(DFT)calculations further demonstrated the synergistic effect of alloy layer introduction and Mn doping could accelerate electron transfer and stabilize the charged active center to activate the NiFe LDH and reduce the OER energy barrier.Our work offers new insights into developing efficient self-supported catalysts for high-current alkaline water oxidation.

关键词： heteroatom doping alloy layer introduction synergistic effect high-current alkaline water oxidation

Isoforsythiaside confers neuroprotection against Alzheimer's disease by attenuating ferroptosis and neuroinflammation in vivo and in vitro

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 2023年第5期12卷 1730-1742页

作者： Chunyue Wang Hongbo Jiang Honghan Liu Shanshan Chen hangyu Guo Shuoshuo Ma weiwei han Yu Li Di Wang School of Life Sciences Jilin UniversityChangchun 130012China Engineering Research Center of Chinese Ministry of Education for Edible and Medicinal Fungi Jilin Agricultural UniversityChangchun 130118China

Ferroptosis and neuroinflammation contribute to the development of Alzheimer's disease(AD). Isoforsythiaside(IFY)is a phenylethanoid glycoside isolated from the dried fruit of Forsythia suspensa(Thunb.)Vahl that has been confirmed to improve the memory and cognitive abilities of APP/PS1 mice in our previous study. The purpose of this study was to explore the anti-ferroptosis and anti-neuroinflammatory properties of IFY-mediated neuroprotection. In APP/PS1 mice, erastin-damaged HT22 cells, and LPS-exposed BV2 cells, the neuroprotective effects against ferroptosis and neuroinflammation were investigated using immunohistochemistry, label-free proteomics, western blot, ELISA, MTT, fluorescence, and TEM. IFY alleviated the expression levels of NO, IL-6, and IL-1β in LPS-exposed BV2 cells and improved the morphology of mitochondria in erastin-damaged HT22 cells. Additionally, IFY upregulated the expression levels of GPX4, FTH, FTL, p-GSK-3β, Nrf2, and NQO1, and downregulated the expression of TFR1, DMT1, p-Fyn, GFAP, p-IKKα+β, p-IκBα, p-NF-κB, and pro-inflammatory factors in the brains of APP/PS1 mice and erastin-damaged HT22 cells. In conclusion, IFY inhibits ferroptosis and neuroinflammation in erastin-damaged HT22 cells and APP/PS1 mice, at least partially by regulating the activation of Nrf2 and NF-κB signaling. IFY may prevent ferroptosis and neuroinflammation in AD and provide a new treatment strategy for AD.

关键词： Ferroptosis Neuroinflammation Isoforsythiaside Alzheimer's disease

中华传统文化融入大学英语多模态教学研究——以艺术专业为例

在线全文

学校读者我要写书评

暂无评论

河北开放大学学报 2024年第2期29卷 76-79页

作者：韩薇薇闽南理工学院外国语学院福建泉州362700

艺术专业大学英语教学的主要目标之一是提高学生的综合文化素养。将中华灿烂的传统文化融入艺术专业大学英语教学环节中,既是传承和推动中华优秀传统文化发展的重要行动,也是培养高素质艺术人才的内在所需。然而,在大学英语课堂中,中华... 详细信息

艺术专业大学英语教学的主要目标之一是提高学生的综合文化素养。将中华灿烂的传统文化融入艺术专业大学英语教学环节中,既是传承和推动中华优秀传统文化发展的重要行动,也是培养高素质艺术人才的内在所需。然而,在大学英语课堂中,中华传统文化融入教学存在着一定的问题,需要教师在教学实践过程中,结合艺术专业学生的特点,以多模态教学理论为指导,做到将中华传统文化和语言教学有效结合,以提高学生的语言应用能力和文化素养,从而改变艺术专业英语课堂中华传统文化的缺失现象,达到真正实现艺术专业英语课程育人的要求。

关键词：中华传统文化大学英语多模态教学艺术专业

在线全文

学校读者我要写书评

暂无评论

贾平凹文学作品中方言英译与接受探赜

黑河学院学报 2024年第2期15卷 114-117页

作者：韩薇薇闽南理工学院外国语学院福建石狮362700

贾平凹是我国当代著名作家,其作品以独特的艺术风格和丰富的文化内涵受到广泛关注。贾平凹作品中丰富的方言词汇给翻译带来挑战,如何在保持原作韵味的基础上,让国内外读者更好地理解和接受这些方言,成为翻译工作者关注的焦点。贾平凹文... 详细信息

贾平凹是我国当代著名作家,其作品以独特的艺术风格和丰富的文化内涵受到广泛关注。贾平凹作品中丰富的方言词汇给翻译带来挑战,如何在保持原作韵味的基础上,让国内外读者更好地理解和接受这些方言,成为翻译工作者关注的焦点。贾平凹文学作品中的方言特点鲜明,生活化、形象化、地域化、个性化、民族化等突出,且语法多变。在翻译策略方面,应综合应用不同的翻译理论与方法,达到受者接受效果好,沟通文化理解强的目标。

关键词：贾平凹文学作品方言英译综合性翻译

在线全文

学校读者我要写书评

暂无评论

氧化铝改性硅基陶瓷型芯制备及结晶动力学

材料工程 2024年第5期52卷 212-217页

作者：范红娜许西庆李鑫齐长见李敏敏韩委委中航装甲科技有限公司天津300399 长安大学材料科学与工程学院西安710061

氧化铝是硅基陶瓷型芯中的常用矿化剂,但其对石英析晶的促进或抑制作用却存在两种相反的结论。为探究不同氧化铝添加剂对硅基陶瓷型芯性能与析晶行为的影响,分别采用高纯氧化铝、普通氧化铝作为矿化剂,制备氧化铝改性硅基陶瓷型芯。高... 详细信息

氧化铝是硅基陶瓷型芯中的常用矿化剂,但其对石英析晶的促进或抑制作用却存在两种相反的结论。为探究不同氧化铝添加剂对硅基陶瓷型芯性能与析晶行为的影响,分别采用高纯氧化铝、普通氧化铝作为矿化剂,制备氧化铝改性硅基陶瓷型芯。高纯氧化铝粉对方石英的析晶起到抑制作用,而普通氧化铝粉反而促进方石英的析晶。普通氧化铝粉比高纯氧化铝粉含有更多的碱金属、碱土金属氧化物杂质,这些氧化物作为网络修饰体降低结晶活化能,促进方石英的析晶。两种氧化铝矿化剂对型芯的线收缩率、致密化和力学性能影响表现出很大差异。由于普通氧化铝粉促进方石英析晶和烧结致密化,显著提高型芯的抗蠕变能力。当普通氧化铝粉加入量为5%(质量分数)时,陶瓷型芯表现出良好的综合性能,其收缩率为0.63%,室温弯曲强度为20.2 MPa,1540℃/0.5 h双支点挠度为0.23 mm,可满足精密铸造对型芯的要求。

关键词：氧化硅陶瓷型芯氧化铝结晶活化能性能

维普期刊数据库博看期刊

Asymmetric Synthesis and Antitumor Activity of Spiro- Oxadiazole Derivatives from 1,4：3,6-Dianhydro-D-fructose

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2017年第9期35卷 1437-1444页

作者： Wenke Xu Yongxun Ge Yu Hou Yingju Liu Yingchun Hua weiwei han Zhiyan Qin Fengwu Liu School of Pharmaceutical Sciences Zhengzhou University Zhengzhou Henan 450001 China Collaborative Innovation Center of Henan New Drug Research and Safety Evaluation Zhengzhou Henan 450001 China Zhengzhou Central Hospital Affiliated to Zhengzhou University Zhengzhou Henan 450007 China Oepartment of Medicine Kaifeng University Kaifeng Henan 475000 China

一系列 spiro-oxadiazoles 经由立体声从 1,4:3,6-dianhydro-D-fructose 和一种肺结核特效药被综合 -- 选择二拍子的圆舞反应顺序。最新综合的混合物的结构被建立由光谱分析。复合 2a 的绝对配置被单个水晶 X 光检查分析进一步证实。所... 详细信息

一系列 spiro-oxadiazoles 经由立体声从 1,4:3,6-dianhydro-D-fructose 和一种肺结核特效药被综合 -- 选择二拍子的圆舞反应顺序。最新综合的混合物的结构被建立由光谱分析。复合 2a 的绝对配置被单个水晶 X 光检查分析进一步证实。所有综合混合物被屏蔽为他们的在里面 vitro antitumor 活动，证明这些混合物对 A549 举办差的禁止的活动， MGC-803 肿瘤房间。

关键词：体外抗肿瘤活性不对称合成螺环衍生物合成化合物 e唑光谱分析法 X射线分析

Accurate method based on data filtering for quantitative multi-element analysis of soils using CF-LIBS

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

Plasma Science and Technology 2024年第6期26卷 149-158页

作者：韩伟伟孙对兄张国鼎董光辉崔小娜申金成王浩亮张登红董晨钟苏茂根 Key Laboratory of Atomic and Molecular Physics&Functional Material of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070People’s Republic of China Gansu Digital Herb Testing Center Dingxi 743000People’s Republic of China Gansu International Scientific and Technological Cooperation Base of Laser Plasma Spectroscopy Lanzhou 730070People’s Republic of China

To obtain more stable spectral data for accurate quantitative analysis of multi-element,especially for the large-area in-situ elements detection of soils, we propose a method for a multielement quantitative analysis of soils using calibration-free laser-induced breakdown spectroscopy(CF-LIBS) based on data filtering. In this study, we analyze a standard soil sample doped with two heavy metal elements, Cu and Cd, with a specific focus on the line of Cu I324.75 nm for filtering the experimental data of multiple sample sets. Pre-and post-data filtering,the relative standard deviation for Cu decreased from 30% to 10%, The limits of detection(LOD)values for Cu and Cd decreased by 5% and 4%, respectively. Through CF-LIBS, a quantitative analysis was conducted to determine the relative content of elements in soils. Using Cu as a reference, the concentration of Cd was accurately calculated. The results show that post-data filtering, the average relative error of the Cd decreases from 11% to 5%, indicating the effectiveness of data filtering in improving the accuracy of quantitative analysis. Moreover, the content of Si, Fe and other elements can be accurately calculated using this method. To further correct the calculation, the results for Cd was used to provide a more precise calculation. This approach is of great importance for the large-area in-situ heavy metals and trace elements detection in soil, as well as for rapid and accurate quantitative analysis.

关键词： laser-induced breakdown spectroscopy soil data filtering quantitative analysis multielement

利用Markov模型研究Aβ突变体的构象转变过程

在线全文

学校读者我要写书评

暂无评论

吉林大学学报（理学版） 2024年第1期62卷 174-180页

作者：姚星宇刘璎锐韩葳葳万由衷吉林大学白求恩第三医院长春130033 吉林大学生命科学学院长春130012

为抑制淀粉样β多肽(Aβ)从无规卷曲或α-螺旋转变为β-折叠结构,研究野生型Aβ及其数组突变体的构象变化,结合Markov模型与分子动力学模拟,对野生型、A4型和D7N型Aβ的构象变化过程进行研究,明确3种Aβ构象的转变路径.实验结果表明,野... 详细信息

为抑制淀粉样β多肽(Aβ)从无规卷曲或α-螺旋转变为β-折叠结构,研究野生型Aβ及其数组突变体的构象变化,结合Markov模型与分子动力学模拟,对野生型、A4型和D7N型Aβ的构象变化过程进行研究,明确3种Aβ构象的转变路径.实验结果表明,野生型Aβ出现一个区域的β-折叠,A4型Aβ构象几乎无变化,而D7N型Aβ出现两个区域的β-折叠,说明D7N型突变体具有促β-折叠特性,该结果为阿尔兹海默症的治疗方法探索提供理论依据.

关键词：阿尔兹海默症淀粉样β多肽分子动力学模拟 Markov模型

立德树人视域下高职体育课程思政的教学设计实践探索

在线全文

学校读者我要写书评

暂无评论

柳州职业技术学院学报 2024年第1期24卷 79-84页

作者：张新秀韩卫卫柳州职业技术学院广西柳州545006

研究立足高职人才培养的定位及特殊学情,在解析体育课程思政建设总体依据的基础上,探索体育课程思政的设计实施路径,并针对相关的课程思政元素,从目标设计、内容选择、教学策略、融入评价四个方面探索出一条体育课程思政融入的教学设计... 详细信息

研究立足高职人才培养的定位及特殊学情,在解析体育课程思政建设总体依据的基础上,探索体育课程思政的设计实施路径,并针对相关的课程思政元素,从目标设计、内容选择、教学策略、融入评价四个方面探索出一条体育课程思政融入的教学设计路径,促进思政教育在体育教学课堂上的深度融合,协同并进。

关键词：高职体育课程思政元素挖掘教学设计