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Mesoporous TS-1 Nanocrystals as Low Cost and High Perfor-mance Catalysts for Epoxidation of Styrene

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Chinese Journal of Chemistry 2017年第5期35卷 577-580页

作者： tian-lu Cui Xin-Hao Li Jie-Sheng chen School of Chemistry and Chemical Engineering Shanghai Jiao Tong University Shanghai 200240 China

Mesoporous TS-1 nanocrystals were facilely synthesized without involving additional templates. The usage of inorganic silicon source, less structure-directing agent and high yields of nearly 100% made this template-free strategy suitable for large-scale synthesis with low cost. Furthermore, the as synthesized TS-1 exhibited comparable epoxidation performance than those obtained by other methods.

关键词： TS-1 mesoporous nanocrystal low cost epoxidation

Nanoimprint lithography for the manufacturing of flexible electronics

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Science China(Technological Sciences) 2019年第2期62卷 175-198页

作者： SHAO JinYou chen XiaoLiang LI XiangMing tian HongMiao WANG ChunHui lu BingHeng State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University

Flexible electronics have received considerable attention in academies and industries for their promising applications in enormous fields, such as flexible displays, wearable sensors, artificial skins, and flexible energy devices. Challenges remain in developing a flexible and scalable manufacturing method to facilitate the fabrication of multi-functional structures in a flexible electronic system. Nanoimprint lithography is a high resolution and low-cost approach to fabricate nanostructures over a large area. This paper reviews recent progress of nanoimprint lithography and its applications in flexible electronics. The basic principles, classification, research focus, and critical issues of nanoimprint lithography are elaborated. Then, the advantages of nanoimprint lithography are demonstrated in several typical applications related to flexible electronics, including conductive films, optoelectronic devices, flexible sensors, energy harvesting and storage devices, and bioinspired electronic devices. Finally,the challenges and perspectives of nanoimprint lithography in flexible electronic systems are discussed.

关键词： nanoimprint lithography manufacturing flexible electronics nanostructures sensors

分离纯化重组解脂耶氏酵母发酵液中虫草素的研究

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食品与发酵工业 2025年第1期51卷 26-31页

作者：宋丽萍段希宇王翀卢向阳田云湖南农业大学生物科学技术学院湖南长沙410128 沅江市芦小妹食品有限公司湖南益阳413000

多项研究证明以解脂耶氏酵母作为虫草素生物合成的细胞工厂,是获得虫草素的有效途径。为获得下游虫草素分离纯化工艺,该研究采用不同规格的大孔吸附树脂对重组解脂耶氏酵母发酵液中的虫草素进行静态、动态纯化。结果显示,以NKA-Ⅱ大孔... 详细信息

多项研究证明以解脂耶氏酵母作为虫草素生物合成的细胞工厂,是获得虫草素的有效途径。为获得下游虫草素分离纯化工艺,该研究采用不同规格的大孔吸附树脂对重组解脂耶氏酵母发酵液中的虫草素进行静态、动态纯化。结果显示,以NKA-Ⅱ大孔吸附树脂作为吸附材料,在虫草素质量浓度为3 mg/mL、pH值为9的上样液以上样流速为3 BV/h、上样体积为10 BV、洗杂流速为2 BV/h、洗杂体积为3 BV、洗脱剂为体积分数为30%乙醇、洗脱流速为3 BV/h、洗脱体积为15 BV时,发酵液中虫草素回收率可达到87.67%,纯度达65.82%。该研究为今后利用重组解脂耶氏酵母大规模生产制备虫草素提供数据参考。

关键词：虫草素解脂耶氏酵母分离纯化大孔吸附树脂甘蔗糖蜜

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胶乳反应釜自动控制系统的设计与实现

自动化与仪器仪表 2015年第2期 43-44,48页

作者：王少林刘公明魏仁政田晨璐山东建筑大学信息与电气工程学院济南250101 山东省智能建筑技术重点实验室济南250101

简述了胶乳生产的工艺流程及特点,采用欧姆龙CJ系列PLC与组态王组态软件设计了胶乳生产自动化控制系统。通过模糊控制与PID算法实现了反应釜温度的有效控制,整个系统运行良好,达到了控制要求,大大提高了胶乳生产的自动化水平和效率。

关键词：胶乳 PLC 模糊控制 PID

New determination of the gravitational constant G

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National Science Review 2020年第12期7卷 1796-1797页

作者： Zheng-tian lu Hefei National Laboratory for Physical Sciences at the Microscale CAS Center for Excellence in Quantum Information and Quantum PhysicsUniversity of Science and Technology of China

A new and so far the most precise determination of the gravitational constant G has been made by Jun luo and colleagues at the Huazhong University of Science and Technology(HUST) [1].The combination of G with two other most fundamental physical constants,the speed of light c and Planck’s constant h,can together construct the natural units(*** units) of time,length and *** relationships inform us that,

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Microstructure,tensile properties and thermal stability of AlMgSiScZr alloy printed by laser powder bed fusion

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Journal of Materials Science & Technology 2021年第10期69卷 200-211页

作者： Jiang Bi Zhenglong Lei Yanbin chen Xi chen Ze tian Nannan lu Xikun Qin Jingwei Liang State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China

The new generation of Sc and Zr modified Al alloys has been attracted wide concerns in aerospace industry,owing to the excellent mechanical performances and superior thermal stability than other normal Al *** microalloying with Sc and Zr,the Al3(Sc,Zr)particle forms as the grain refiner during the solidification,which is extremely beneficial for the laser powder bed fusion(LPBF)processed Al *** this study,a new type Al-14.1 Mg-0.47 Si-0.31 Sc-0.17 Zr alloy was additively manufactured by LPBF,and the microstructure,tensile properties and thermal stability were studied in *** using a single melt-67°scanning strategy,the LPBF-processed specimen with a relative density of 99.4%and tensile strength of 487.7 MPa was obtained at 160 W-200 mm/*** this AlMgSiScZr alloy can still exhibit an excellent tensile strength of 393.9 MPa at a moderate temperature of 473 *** the aging treatment,the tensile properties further increased due to the precipitate hardening of Mg2Si and Al3(Sc,Zr),and the maximum value(580 MPa)was reached at an aging time of 10 *** average crystal size was almost unchanged after aging treated at 325℃and 24 h,indicating this AlMgSiScZr alloy has an improved thermal *** AlMgSiScZr alloy is recommended to substitute some particular titanium alloys in aerospace field afterwards.

关键词： Laser powder bed fusion AlMgSiScZr alloy Microstructure Tensile behavior Thermal stability Phase evolution

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美丽园区建设的路径研究

生态经济 2025年第1期41卷 44-51页

作者：陈吕军严坤田金平清华大学环境学院北京100084 清华大学生态文明研究中心北京100084 清华大学碳中和研究院北京100084

建设美丽中国是全面建设社会主义现代化国家、实现中华民族永续发展的重要举措。中国工业园区历经四十多年发展历程,已经成为建设实体经济、引领区域发展的先行者,目前已聚集全国80%的工业企业,推动工业园区建设成为人与自然和谐共生的... 详细信息

建设美丽中国是全面建设社会主义现代化国家、实现中华民族永续发展的重要举措。中国工业园区历经四十多年发展历程,已经成为建设实体经济、引领区域发展的先行者,目前已聚集全国80%的工业企业,推动工业园区建设成为人与自然和谐共生的美丽园区,对我国生态文明建设意义重大。论文回顾了中国工业园区的发展历程,面向新发展阶段存在的新挑战和新机遇,提出了工业园区在新时代需承担的高质量发展使命任务。在此基础上,本文针对园区社会、经济、自然三个子系统,从六个方面解析并详细阐述了中国工业园区打造美丽园区、支撑美丽中国建设的关键内涵。进一步地,根据国家对美丽中国建设提出的目标和计划,结合我国生态工业园区发展过程中形成的实践经验,从八个维度提出工业园区推进美丽中国建设的关键行动,支撑工业园区生态文明建设和美丽中国行动。

关键词：美丽中国工业园区美丽园区绿色发展生态文明

Relationship between settlements and topographical factors:An example from Sichuan Province,China

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Journal of Mountain Science 2018年第9期15卷 2043-2054页

作者： XI Chang-bai QIAN tian-lu CHI Yao chen Jie WANG Jie-chen Department of Geographic Information Science Nanjing UniversityNanjing 210023China Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology Nanjing UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China

Terrain can influence the spatial distribution of settlements. Studies on the terrain characteristics of settlements can help to understand the effects of the environment on human activities. This paper provides a quantitative analysis of the relationship between settlements and topographical factors. A statistically significant sample of residential locations and ASTER GDEM V2 were used to investigate terrain traits and settlements distributions. We selected eight topographical factors and introduced a practical concept, distributive entropy, into assessing the aggregation extent of the settlements' spatial distribution. The study showed that topography varies within the study area, and distributive entropy indicates that settlements have distinctive distribution tendency in statistic approach. According to the results of this study, mountain inhabitants prefer to settle in valleys. Additionally, with distributive entropy, residential suitability was divided to three levels: suitable, normal, and unsuited. The results showed that suitable area is small in Sichuan Province, accounting for 8.2%～29.9%; however, unsuited area is large, accounting for 33%～63.3%.

关键词： Settlement Topographical factor Distributive entropy Spatial pattern GeographicalInformation System

A new electrochemical angular microaccelerometer with integrated sensitive electrodes perpendicular to flow channels

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Microsystems & Nanoengineering 2022年第4期8卷 103-109页

作者： Bowen Liu tian Liang Wenje Qi Anxiang Zhong Mingwei chen Yulan lu Jian chen Deyong chen Junbo Wang The State Key Laboratory of Transducer Technology Aerospace Information Research InstituteChinese Academy of Sciences100190 BeijingChina The School of Electronic Electrical and Communication EngineeringUniversityof ChineseAcademyofSciences100049BejingChina

A new electrochemical angular microaccelerometer with integrated sensitive electrodes perpendicular to flow channels was developed in this *** on a liquid inertial mass,an incoming angular acceleration was translated into varied concentrations of reactive ions around sensitive microelectrodes,generating a detection *** structural parameters of the sensitive microelectrodes were designed and compared based on theoretical analysis and numerical *** angular microaccelerometer incorporating sensitive microelectrodes was then fabricated,assembled and characterized,producing a sensitivity of 338 V/(rad/s^(2)),a-3 dB bandwidth of 0.01-10 Hz and a noise level of 4.67×10^(-8)(rad/s^(2))/Hz^(1/2)@1 *** performances were better than their commercial counterparts based on traditional electrodes and previously reported microaccelerometers based on microsensitive electrodes in parallel with flow channels,which can be applied to measure rotational accelerations in earthquakes and buildings.

关键词： angular perpendicular flow