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Li^+ extraction/insertion reaction with Mg_2Mn_(0.5)Ti_(0.5)O_4 inverse spinel in the aqueous phase

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Rare Metals 2007年第6期26卷 536-540页

作者： jang Jinhe dong Dianquan CHEN Guanghui LIU Jiaqiang LI Jianlong Department of Chemical Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China

An inverse spinel-type metal oxide, magnesium-manganese-titanium oxide （Mg2Mn0.5Ti0.5O4）, were prepared using the coprecipitation/thermal crystallization method. The extraction/insertion reaction with this material was investigated by X-ray, saturation capacity of exchange, pH titration, and distribution coefficient （Kd） measurement. The acid treatments of Mg2Mn0.5Ti0.5O4 caused Mg^2＋ extractions of more than 81%, whereas the dissolutions of Mn^4＋ and Ti^4＋ were less than 10%. The experimental results proved that the acid-treated sample has a capacity of exchange 56 mg·g^-1 for Li^＋ in the solution. The chemical analysis showed that the Li^＋ extraction/insertion progressed mainly by ion-exchange mechanism and surface adsorption.

关键词： extraction/insertion reaction inverse spinel-type metal oxides ion-exchange mechanism Mg2Mn0.5Ti0.5O4

Influence of CaO on damping capacity and mechanical properties of Mg alloy

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中国有色金属学会会刊：英文版 2009年第B09期19卷 76-79页

作者： dong-In jang Jin-Kyu LEE Dae-Up KIM Shae-K KIM Advanced Material Division Korea Institute of Industrial Technology Hyudai Mobis

For developing cost effective damping Mg alloys with high damping capacity and better mechanical properties, the microstructures, the mechanical properties at room temperature and the damping capacity of Mg alloy adding CaO were investigated and compared with those of K1A alloy. CaO adding into pure Mg maintains the damping capacity and increases the ultimate tensile strength compared with those of pure Mg. Mg-CaO alloy can be regarded as cost-effective damping alloy with high damping and mechanical properties as well as with the advantages of improving oxidation and burning resistances.

关键词：阻尼能力力学性能镁合金氧化钙成本效益微观结构阻尼性能电阻合金

Self-Healing Microcapsule-Thickened Oil Barrier Coatings

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Research 2019年第1期2019卷 1196-1204页

作者： Alane Tarianna OLim Chenlong Cui Hee dong jang Jiaxing Huang Department of Materials Science and Engineering Northwestern UniversityEvanstonIllinois 60208USA Rare Metals Research Center Korea Institute of Geoscience and Mineral ResourcesDaejeon 305-350Republic of Korea

Low-viscosity oils could potentially act as self-healing barrier coatings because they can readily fow and reconnect to heal minor *** the same reason,however,they typically do not form stable coatings on metal *** viscosity helps to stabilize the oil coating,but it also slows down the healing ***,we report a strategy for creating highly stable oil coatings on metal surfaces without sacrifcing their remarkable self-healing ***-viscosity oil flms can be immobilized on metal surfaces using lightweight microcapsules as thickeners,which form a dynamic network to prevent the creep of the *** the coating is scratched,oil around the opening can rapidly fow to cover the exposed area,reconnecting the particle *** of these coatings as anticorrosion barriers is *** coatings can be easily applied on metal surfaces,including those with complex geometries,both in air or under water,and remain stable even in turbulent *** can protect metal in corrosive environments for extended periods of time and can self-heal repeatedly when scratched at the same *** a strategy may ofer efective mitigation of the dangerous localized corrosion aggravated by minor imperfections or damage in protective coatings,which are typically hard to prevent or detect,but can drastically degrade metal properties.

关键词： coating creep corrosion

Effect of thixoextrusion parameters on mechanical properties of 7003 Aluminum wrought alloy

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Rare Metals 2006年第z2期25卷 124-128页

作者： YOON Young-Ok jang dong-in JO Hyung-Ho KIM Young-Jig KIM Shae K Department of Advanced Material Engineering Sungkyunkwan University 300 Chunchun-dong Jangan-gu Suwon Gyunggi-do 440-746 KoreaAdvanced Material Center Korea Institute of Industrial Technology 7-47 Songdo-dong Yeonsu-gu Incheon 406-840 Korea Advanced Material Center Korea Institute of Industrial Technology 7-47 Songdo-dong Yeonsu-gu Incheon 406-840 Korea Department of Advanced Material Engineering Sungkyunkwan University 300 Chunchun-dong Jangan-gu Suwon Gyunggi-do 440-746 Korea

The processing of high strength Al wrought alloys does lead either to restrictions for geometrical complexity or to high production costs due to low productivity and multiple-step processes. Thixoextrusion process to overcome these difficulties has been under investigation. In the present study, the effect of thixoextrusion parameters was investigated on mechanical properties of 7003 Al wrought alloy. The maximum extrusion pressure of the thixoextrusion process is three times lower than that of the hot extrusion process. The elongated grains which have the axisymmetry with extrusion direction are generally observed during hot extrusion process, while the microstructures of the thixoextruded are isotropic. The tensile and yield strengthes of the thixoextruded bar are lower than those of the hot extruded bar, while the elongation value of the thixoextruded bar is higher than that of the hot extruded bar.

关键词： thixoextrusion isotropy 7003 Al wrought alloy

Winter and spring nighttime warming acclimation improves the grain yield of winter wheat via enhancing the flag leaf photosynthetic performance in the Yangtze River Basin of China

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Winter and spring nighttime warming acclimation improves the...

2014年中国作物学会学术年会

作者： Yonghui FAN YanyanYAN Chenxi HU Zhongwei TIAN Jian CAI dong jang Tingbo DAI Key Laboratory of Crop Physiology Ecology and Production ManagementMinistry of AgricultureNanjing Agricultural University

Impacts of asymmetric warming on wheat remain *** investigated the response of wheat to the moderate warming,we conducted a two-year field experiment under simulated warming conditions using a passive warming facility in China since 2012 to *** the experiment of climate change,consisted of winter nighttime warming(WW,1.55℃),spring nighttime warming(SW,1.85℃),ambient control(CK),we used two winter wheat cultivars which were spring cultivar Yangmai 13(YM 13) and semi-winter cultivar Yannong 19(YM 19).The results reported here prove that both WW and SW increased the grain yield,WW improved the grain yield remarkably,the growth range of grain yield of YM13 was higher than YN19;WW significantly increased the grain number and 1000-grains weight of the two wheat varieties,thus the grain yield was significantly *** previous nighttime warming acclimation increased the dry matter accumulation at different growth stages,the increase before anthesis stages was *** flag leaf area and chlorophyll content conspicuous increased at the 0-21 d after anthesis in the nighttime warming adaptation,which was benefit to capture more light for flag ***,WW and SW significantly increased net photosynthetic rate(PN),the maximum photochemical efficiency under dark-adapted(Fv/Fm) and the actual photosynthetic efficiency(ΦPSII) after booting *** increased degree of WW was higher than SW,illustrated that the moderate nighttime warming not only improved the photosynthetic rate,but also enhanced the capacity of *** addition,the degradation rate of the soluble protein and ribulose 1,5-bisphosphate carboxylase/oxygenase(Rubisco) were lower that of the control at 0-21 d after anthesis,the senescence rate was slowly,while the senescence rate accelerated at the21-35 d after ***,WW and SW attenuated the generating rate of superoxide anion,while decreased the membrane lipid peroxidation(MDA) content and reduced the phospholip

关键词： Wheat Nighttime warming Acclimation Photosynthetic characteristics Senescence Grain yield

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对我国法院调解制度的反思

安徽职业技术学院学报 2011年第1期10卷 27-29,33页

作者：蒋冬冬湘潭大学法学院湖南湘潭411105

调解在我国有着悠久的历史传统,有着"东方经验"之美称。在司法实践中法院调解制度具有重要的价值。随着我国经济体制改革的推进、我国法治建设的进程日益加快,法院调解制度的诸多弊端日益凸显,如法官出于绩效考核的考虑,会将个人意志强... 详细信息

调解在我国有着悠久的历史传统,有着"东方经验"之美称。在司法实践中法院调解制度具有重要的价值。随着我国经济体制改革的推进、我国法治建设的进程日益加快,法院调解制度的诸多弊端日益凸显,如法官出于绩效考核的考虑,会将个人意志强加给当事人,出现"和稀泥"、"以压促调"、"以判压调"、"以拖促调"等异化现象。为此,必须进一步规范法院调解程序,对法院调解制度的改革进行一些新的尝试,让法院调解更加制度化、规范化,更加符合依法治国的基本要求,推动构建社会主义和谐社会的进程。

关键词：法院调解弊端构想

Some advancements in antenna near/far field calculation for EMC prediction

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Some advancements in antenna near/far field calculation for ...

The Fourth Asia-Pacific Conference on Environmental Electromagnetics

作者： Ben-Qing Gao jang-dong Geng Wei-Min Li Department of Electronic Engineering Beijing Institute of Technology Beijing 100081 China

＜正＞Several novel approaches are summarized, which are from our EMC project practices for recent years. These include: （1） A universal near/far field algorithm,;（2） A deductive method for near/far field estimate;（3） Element technique combined with GTD approaches to predict near/far field. Some examples are shown to support these approaches. They may be widely used in the antenna analysis and EMC prediction.

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人工智能驱动下图书馆智慧服务重塑

科技视界 2019年第5期 273-274页

作者：尤江东信息工程大学图书馆河南郑州450001

人工智能为智慧图书馆发展带来了全新的机遇和挑战。文章从人工智能的基本理念入手,介绍了人工智能的概念及特点,阐述人工智能在图书馆服务中的具体应用,具体指出人工智能推动图书馆在智能馆舍空间建设、智能资源高效利用、个性化智能... 详细信息

人工智能为智慧图书馆发展带来了全新的机遇和挑战。文章从人工智能的基本理念入手,介绍了人工智能的概念及特点,阐述人工智能在图书馆服务中的具体应用,具体指出人工智能推动图书馆在智能馆舍空间建设、智能资源高效利用、个性化智能服务和人工智能教育等方面的创新服务模式。

关键词：人工智能智慧图书馆智慧服务

修正与共识保护与传承--首届昌都锅庄展演比赛和高峰论坛基本情况及引发的思考

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西藏艺术研究 2020年第2期 46-52页

作者：周方舟江东西藏大学艺术学院舞蹈系

由昌都市文化局主办的首届昌都锅庄展演比赛暨高峰论坛于2019年8月19日至25日在西藏自治区昌都市隆重举行。本次比赛和高峰论坛在主办方的精细策划,昌都市各机关部门的通力合作下,极好地宣传了西藏昌都丰富的文化资源,也彰显了锅庄在当... 详细信息

由昌都市文化局主办的首届昌都锅庄展演比赛暨高峰论坛于2019年8月19日至25日在西藏自治区昌都市隆重举行。本次比赛和高峰论坛在主办方的精细策划,昌都市各机关部门的通力合作下,极好地宣传了西藏昌都丰富的文化资源,也彰显了锅庄在当代的文化价值,映射出其背后博大精深的文化底蕴,推动了锅庄文化的传承、发展与传播的力度。本论文以此次比赛与高峰论坛为背景,着重介绍、分析了这一文化活动过程并以自我文化为视角,提出了一些见解。期望对挖掘、改善锅庄文化中存在的问题,为建构丰富多元的西藏文化理论体系产生裨益。

关键词：昌都锅庄展演高峰论坛修正与共识保护与传承