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Laboratory test on moisture adsorption-desorption of wall paintings at Mogao Grottoes, China

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第3期13卷 208-218页

作者： hu-yuan ZHANG Geng-sheng YAN Xu-dong WANG MOE Key Laboratory of Mechanics on Disaster and Environment in Western China Lanzhou University Lanzhou 730000 China School of Civil Engineering and Mechanics Lanzhou University Lanzhou 730000 China National Engineering Research Center of Ancient Mural Protection Dunhuang 736200 China Dunhuang Academy Dunhuang 736200 China

Moisture adsorption-desorption tests (MATs) were conducted on simulated mural plaster specimens under different air temperatures (ATs) and relative humidity (RH) to investigate the possible effect of seasonal alteration and visitors’ breath on the deterioration of Mogao Grottoes, Dunhuang, China. Saturated salt solutions were used to maintain a constant RH, and plant growth cabinets were used to maintain a constant or varying temperature in the simulation test. The weight of specimen was periodically measured to determine the adsorbed or desorbed moisture. Test data illustrate that the desorption process is far quicker than the adsorption one, indicating that it is possible to inhibit the disadvantage effect from visitors, such as shortening the staying time in caves. In case of high humidity, an accumulated moisture adsorption was found to correspond to the varying temperature. On the other hand, in case of low humidity, accumulated moisture desorption corresponded. Test data imply that opening caves more often to visitors in humid seasons should be avoided so as to prevent continuous wetting of wall paintings.

关键词： Mogao Grottoes Wall paintings Piaster Moisture adsorption-desorption Unsaturated soil

Thermodynamic analysis and simulation for gas baffle entrance collimator of EAST-NBI system based on thermo-fluid coupled method

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Nuclear Science and Techniques 2018年第1期29卷 90-95页

作者： Ling Tao Chun-dong hu yuan-Lai Xie Institute of Plasma Physics Chinese Academy of Sciences

The world's first full Experimental Advanced Superconducting Tokamak(EAST) is designed with the auxiliary heating method of neutral beam injection(NBI)system. Beam collimators are arranged on both sides of the beam channel for absorbing the divergence beam during the beam transmission process in the EAST-NBI *** gas baffle entrance collimator(GBEC) is a typical high-heat-flux component located at the entrance of gas baffle. An efficient and accurate analysis of its thermodynamic performance is of great significance to explore the working limit and to ensure safe operation of the system under a high-parameter steady-state condition. Based on the thermo-fluid coupled method, thermodynamic analysis and simulation of GBEC is performed to get the working states and corresponding operating limits at different beam extraction conditions. This study provides a theoretical guidance for the next step to achieve long pulse with highpower experimental operation and has an important reference to ensure the safe operation of the system.

关键词： Neutral beam injection High-heat-flux component Beam collimator Thermo-fluid coupled method Thermodynamic analysis

Effects of poly-(p-phenylene terephthamide) powder coated with polydopamine on ethylene-propylene-diene-terpolymer grafted maleic anhydride

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Science China Chemistry 2016年第4期59卷 459-465页

作者： Ye yuan Sufen Deng Shaokun Song Weibo hu Lijie dong School of Material Science and Engineering Wuhan University of Technology

In this paper, we report a technique for the surface modification of poly-(p-phenylene terephthamide)(PPTA) powder coated with polydopamine(PDOPA). We used air oxidation to self-polymerize dopamine(DOPA) to ensure that the PPTA powder was coated. Our results indicate that the modified surface of PPTA powder enhances compatibility with the polymer matrix without damaging its structure. Additionally, it is possible to control the coating thickness of PDOPA by regulating the reaction time. The modified PPTA powder improved the comprehensive property of ethylene-propylene-diene-terpolymer grafted maleic anhydride(EPDM-g-MAH), and it proved that this method can enhance the strength and electric insulativity of EPDM-g-MAH.

关键词： poly-(p-phenylene terephthamide) powder EPDM-g-MAH polydopamine composites

Resource utilization of flue gas calcium-based desulfurization ash:a comprehensive review

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Journal of Iron and Steel Research International 2023年第3期30卷 405-418页

作者： dong-xiang Meng Ru-fei Wei Fei-hu Zhang Hong-ming Long yuan-yuan Zhou School of Metallurgical Engineering Anhui University of TechnologyMa’anshan 243032AnhuiChina Key Laboratory of Metallurgical Emission Reduction and Resources Recycling Ministry of EducationAnhui University of TechnologyMa’anshan 243032China Industrial Development Research Center China Metallurgical Industry Planning and Research InstituteBeijing 100013China

Calcium-based desulfurization ash(CDA)is mainly produced in dry and semi-dry flue gas desulfurization *** property of CDA is extremely unstable because its main component,calcium sulfite,makes it difficult to be directly applied to the field of building *** modification of desulfurization ash can be realized by high-temperature oxidation and wet *** modification,CDA can be widely used in building *** oxidation has broad development prospects because it can complete the oxidation of CDA and the removal of impurity elements at the same *** can be used to prepare high value-added products of calcium sulfate whiskers and ecological rubber fillers.

关键词： Calcium-based desulfurization ash Oxidation modification Building material Calcium sulfate whisker Flue gas desulfurization

Metal-organic framework microlasers

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Science Bulletin 2017年第1期62卷 3-4页

作者： yuan Liu Haiyun dong Fengqin hu Yong Sheng Zhao College of Chemistry Beijing Normal University Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences

The discovery and continued development of the lasers have led to a revolution in both fundamental researches and optoelectronic ***,micro/nanolasers that can generate intense coherent light signals at(sub)wavelength scale have become a research focus due to their potential applications in a variety of fields ranging from chemical and biological sensing to integrated optoelectronic circuitry[1,2].Organic materials are a kind of excel-

关键词：纳米激光器金属有机骨架光电集成电路有机材料微型激光器 Excel 基础研究持续发展

Co/Co7Fe3 heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc–air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第02期 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao Yu Zhang Aihua yuan hu Zhou School of Materials Science and Engineering Jiangsu University of Science and Technology School of Environmental and Chemical Engineering Jiangsu University of Science and Technology

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction（ORR） and oxygen evolution reaction（OER） is crucial for developing rechargeable zinc–air batteries（ZABs）. Herein, an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere（NCS） decorated with dual-phase Co/Co7Fe3heterojunctions（CoFe@NCS）. The phase composition of materials has been adjusted by controlling the alloying degree. The optimal CoFe0.08@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm-2for OER in an alkaline electrolyte. The intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co7Fe3alloy and metallic Co species. When the CoFe0.08@NCS material is used as air–cathode catalyst of rechargeable liquid-state zinc–air battery（ZAB）, the device shows a high peak power-density(157 mW·cm-2) and maintains a stable voltage gap over 150 h, outperforming those of the benchmark（Pt/C+RuO2）-based device. In particular, the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending conditions. Our work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

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车辆底盘集中润滑专用脂的研制

润滑油 2011年第1期26卷 15-20页

作者：曹泰峰董元虎尹兴林陈世江王婷长安大学汽车学院陕西西安710062

为了满足车辆底盘集中润滑系统的要求,研究了车辆底盘集中润滑专用脂的制备工艺和性能要求。采用一步法皂化工艺,并用正交设计试验方法探讨了车辆底盘集中润滑专用脂的极压抗磨性能。得出了具有良好的抗磨性、防锈性和抗氧性的车辆底盘... 详细信息

为了满足车辆底盘集中润滑系统的要求,研究了车辆底盘集中润滑专用脂的制备工艺和性能要求。采用一步法皂化工艺,并用正交设计试验方法探讨了车辆底盘集中润滑专用脂的极压抗磨性能。得出了具有良好的抗磨性、防锈性和抗氧性的车辆底盘集中润滑专用脂产品。

关键词：车辆底盘集中润滑系统锂基润滑脂专用脂

负载槲皮素的羧甲基壳聚糖水凝胶促进糖尿病大鼠创面愈合

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中国组织工程研究 2025年第4期29卷 692-699页

作者：董美林都海宇刘源连云港市第二人民医院(南京医科大学康达学院附属医院)烧伤整形科江苏省连云港市222000

背景:槲皮素具有抗炎、抗癌、抗氧化、抗衰老、抗抑郁等药理作用,具有极高的药用价值。槲皮素可以促进正常大鼠创面的愈合,但是以槲皮素为主要成分的药物研发较少,限制了其在临床的广泛应用。目的:以水凝胶材料负载槲皮素,探讨槲皮素-... 详细信息

背景:槲皮素具有抗炎、抗癌、抗氧化、抗衰老、抗抑郁等药理作用,具有极高的药用价值。槲皮素可以促进正常大鼠创面的愈合,但是以槲皮素为主要成分的药物研发较少,限制了其在临床的广泛应用。目的:以水凝胶材料负载槲皮素,探讨槲皮素-羧甲基壳聚糖水凝胶在糖尿病大鼠创面中的应用效果。方法:①分别制备羧甲基壳聚糖水凝胶与槲皮素-羧甲基壳聚糖水凝胶,表征水凝胶的微观形貌、体外释药性能。②细胞实验:将小鼠L929成纤维细胞分4组培养,空白对照组常规培养,纯水凝胶组、药物组、载药水凝胶组分别加入羧甲基壳聚糖水凝胶、槲皮素溶液与槲皮素-羧甲基壳聚糖水凝胶,检测细胞增殖与迁移能力。③动物实验:取80只SD大鼠建立糖尿病模型,造模成功后在大鼠背部制作直径2 cm的全层皮肤缺损创面,随机分4组干预,空白对照组、纯水凝胶组、药物组、载药水凝胶组创面分别注射生理盐水、羧甲基壳聚糖水凝胶、槲皮素溶液、槲皮素-羧甲基壳聚糖水凝胶,每组20只,无菌纱布包扎固定。术后观察创面愈合情况、创面病理形态、炎症因子表达及血管生成情况。结果与结论:①扫描电镜下可见两种水凝胶的微观形貌相似,均呈疏松多孔的网络结构,并且槲皮素-羧甲基壳聚糖水凝胶具有良好的体外释药性能。②与空白对照组比较,其他3组细胞增殖与迁移率升高(P<0.05);载药水凝胶组细胞增殖与迁移率高于纯水凝胶组、药物组(P<0.05)。③载药水凝胶组大鼠术后5,11 d的创面愈合率高于其他3组;载药水凝胶组、纯水凝胶组、药物组大鼠术后18 d的创面愈合率基本达到100%,均高于空白对照组(P<0.05)。苏木精-伊红染色显示,载药水凝胶组大鼠术后18 d创面可见完整的皮肤与皮肤附属器,空白对照组、纯水凝胶组、药物组大鼠术后25 d创面可见完整的皮肤与皮肤附属器。载药水凝胶组大鼠创面术后5,11,18 d的创面肿瘤坏死因子α、白细胞介素6水平均低于空白对照组(P<0.05),术后11,18 d的创面转化生长因子β1水平低于空白对照组(P<0.05)。载药水凝胶组大鼠术后11,18 d的CD31、血管内皮生长因子αmRNA表达量均高于其他3组(P<0.05)。④结果表明,槲皮素-羧甲基壳聚糖水凝胶中的槲皮素可发挥调节炎症反应、促进血管新生的作用,可通过促进成纤维细胞的增殖与迁移,促进糖尿病大鼠创面的愈合。

关键词：创面愈合槲皮素敷料水凝胶糖尿病创面羧甲基壳聚糖皮肤创面成纤维细胞

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鲟鱼育种及新品种选育研究进展

中山大学学报（自然科学版）（中英文） 2025年第1期64卷 93-105页

作者：王巍宋海亮朱华董颖东天胡红霞北京市农林科学院水产科学研究所暨北京市渔业生物技术重点实验室北京100068 农业农村部“鲟鱼遗传育种”重点实验室浙江杭州311799 国家数字种业创新中心北京100097

鲟鱼是鲟形目鱼类的统称。它们不仅具有重要的进化地位,而且具有重要的经济价值。鲟鱼新品种选育研究在近几十年取得了显著进展。本文综述了鲟鱼新品种选育的主要方法,包括杂交育种、雌核发育、性逆转诱导、基因编辑、家系选育、基因组... 详细信息

鲟鱼是鲟形目鱼类的统称。它们不仅具有重要的进化地位,而且具有重要的经济价值。鲟鱼新品种选育研究在近几十年取得了显著进展。本文综述了鲟鱼新品种选育的主要方法,包括杂交育种、雌核发育、性逆转诱导、基因编辑、家系选育、基因组选择和细胞水平育种,讨论了各技术的应用现状,在育种上相关研究和取得的重要突破,并结合我们育种实践积累的经验,展望鲟鱼育种和种业的未来发展,为未来的鲟鱼育种研究提供理论基础和实践指导。

关键词：鲟鱼育种新品种