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现代化工 2024年第4期44卷 70-74页

作者：杜盼陈锦溢丁哲陆平华超白芳王繁中国科学院过程工程研究所绿色过程与工程重点实验室北京100190 中国科学院大学化学工程学院北京100049 中国科学院绿色过程制造创新研究院北京100190 湖北三峡实验室湖北宜昌443000

综述了改良西门子法多晶硅制备工艺及尾气回收研究现状,从回收率、回收效果及能耗等方面阐述了湿法回收、膜分离回收和干法回收3种尾气回收工艺。重点概述了多晶硅尾气干法回收工艺各个单元的研究进展,并根据现状总结了未来的研究方向。

关键词：多晶硅尾气回收氯硅烷膜分离

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W-Fe-Ni合金磨削加工的工艺改进

精密制造与自动化 2024年第1期 51-53页

作者：董华超杨丁山欧李涛中国工程物理研究院材料研究所四川绵阳621900

针对W-Fe-Ni合金薄板工件磨削过程中出现的问题,本文分析了其加工难点,并提出了独特的改进措施,保证了加工精度。实践证明,此改进措施效果较好,为此类零件的加工提供了一种可供借鉴的工艺方法。

关键词： W-Fe-Ni合金薄板加工变形磨削加工工艺改进

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五硫化二磷制备润滑油添加剂研究

辽宁化工 2024年第7期53卷 1055-1059,1064页

作者：刘周恩华超苗刚邓雄飞中国科学院过程工程研究所北京100191 湖北三峡实验室湖北宜昌443007 湖北吉星化工集团有限责任公司湖北宜昌443007

润滑油添加剂是一种非常重要的五硫化二磷下游产品,对五硫化二磷行业发展具有重要作用。为了促进五硫化二磷行业发展,开展了五硫化二磷制备润滑油添加剂的研究。研究表明:在五硫化二磷下游产品中,润滑油添加剂是对五硫化二磷需求量较大... 详细信息

润滑油添加剂是一种非常重要的五硫化二磷下游产品,对五硫化二磷行业发展具有重要作用。为了促进五硫化二磷行业发展,开展了五硫化二磷制备润滑油添加剂的研究。研究表明:在五硫化二磷下游产品中,润滑油添加剂是对五硫化二磷需求量较大的高端产品,占五硫化二磷总需求量的比重较大,且对五硫化二磷的产品质量要求较高。以五硫化二磷为原料制备的润滑油添加剂主要具有摩擦改善、黏度指数改进、抗磨、分散和抗氧化等功能,按功能可分为单功能润滑油添加剂和多种功能润滑油添加剂。单功能润滑油添加剂可显著改进润滑油在一定方面功能,但若需改进润滑油多方面功能时,需添加多种具有单功能的添加剂,添加剂使用量大,使用不便,成本较高;多功能润滑油添加剂可以单一添加剂实现对润滑油在多方面功能的改进,添加剂使用量小,使用简便,成本较低。多功能添加剂是润滑油添加剂未来发展的趋势和热点,应着重利用五硫化二磷制备多功能润滑油添加剂的应用开发。

关键词：五硫化二磷润滑油添加剂高纯化高值化

甘蔗硝酸盐转运蛋白1/肽转运蛋白家族6.4基因(ScNPF6.4)克隆及其调控分蘖功能分析

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作物学报 2024年第8期50卷 2131-2142页

作者：李旭娟李纯佳田春艳孔春艳徐超华刘新龙热带作物生物育种全国重点实验室云南昆明650205 云南省农业科学院甘蔗研究所/云南省甘蔗遗传改良重点实验室云南开远661699

甘蔗(Saccharum ***)是重要的糖料和能源作物,分蘖是影响其产量的重要性状之一。硝酸盐转运蛋白1/肽转运蛋白家族(NITRATE TRANSPORTER 1(NRT1)/PEPTIDE TRANSPORTER(PTR)family,NPF)成员在植生长发育中发挥重要作用,甘蔗中NPF基因的挖... 详细信息

甘蔗(Saccharum ***)是重要的糖料和能源作物,分蘖是影响其产量的重要性状之一。硝酸盐转运蛋白1/肽转运蛋白家族(NITRATE TRANSPORTER 1(NRT1)/PEPTIDE TRANSPORTER(PTR)family,NPF)成员在植生长发育中发挥重要作用,甘蔗中NPF基因的挖掘利用可为甘蔗品种分蘖遗传调控和产业升级奠定重要基础。本研究通过前期转录组数据结合反转录PCR(reverse transcription PCR,RT-PCR)从甘蔗品种ROC22中获得其NPF家族成员6.4基因的cDNA全长序列(命名为ScNPF6.4),并对其进行序列结构、理化性质、系统进化等分析,然后开展了该基因在苗期甘蔗中的组织特异性、甘蔗腋芽萌发过程中的表达情况以及响应激素处理的表达模式分析,最后将该基因遗传转化水稻过表达进行功能验证。结果表明,ScNPF6.4的cDNA包含1个1806 bp的开放阅读框,编码601个氨基酸,属于易化子超家族(major facilitator superfamily,MFS)蛋白,其蛋白分子量为63.9 kD,理论等电点为9.23,包含12个跨膜螺旋区。该蛋白不存在信号肽,具疏水性,属于一类稳定的非分泌蛋白,系统进化分析表明其属于NPF 6.4亚族蛋白。亚细胞定位分析表明该蛋白定位于内质网。组织特异性分析发现,ScNPF6.4在苗期甘蔗根中相对表达量最高,在叶和茎基部相对表达量较低;ScNPF6.4在不同甘蔗品种腋芽萌发阶段均上调表达;适量浓度的植物外源激素6-BA、ABA、GA3、IBA、乙烯利和SLs均能诱导苗期甘蔗中ScNPF6.4的上调表达;水稻中异位过表达ScNPF6.4可增加水稻分蘖数并提前孕穗。以上结果表明,ScNPF6.4正调控甘蔗分蘖芽萌发,其表达受外源植物激素调控,该基因过表达可增加水稻分蘖数并促进提前孕穗,克隆该基因可为甘蔗分蘖早生快发高产育种提供重要的基因资源。

关键词：甘蔗 ScNPF6.4 分蘖植物外源激素功能分析

Fabrication of polymeric-Laponite composite hollow microspheres via LBL assembly

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Chinese Chemical Letters 2017年第2期28卷 367-371页

作者： Wei Deng hua-chao Guo Guo-An Li Cheng-You Kan Key Laboratory of Engineering Dielectrics and Its Application Ministry of Education School of Material Science and Engineering Harbin University of Science and Technology Key Laboratory of Advanced Materials of Ministry of Education Department of Chemical Engineering Tsinghua University

Hollow structure microspheres with composite polymeric-Laponite shells were prepared by electrostatic self-assembly of Laponite on the polymeric hollow microspheres in this *** multilayer hydrophilic core/hydrophobic shell polymer latex particles containing carboxyl groups inside were first synthesized via seeded emulsion polymerization,followed by alkali treatment,generating polymeric hollow ***,polyethyleneimine（PEI） and Laponite were alternately electrostatic adsorbed on the prepared polymeric hollow microspheres to form polymeric-Laponite composite hollow *** was indicated that the morphology of alkali-treated microspheres could be tuned through simply altering the dosage of alkali used in the post-treatment *** with the increasing of the coating layers,the zeta potential of microspheres absorbed PEI or Laponite approximately tended to be constant respectively,and the thickness of Laponite layer around the hollow microspheres increased clearly,getting more uniform and ***,the corresponding polymeric-Laponite hollow microspheres showed high pressure resistance ability compared to the polymeric hollow microspheres.

关键词： Composite microspheres Hollow structure Laponite Osmotic swelling LBL assembly

Phase and Defect Engineering of GeTe-based Alloys for High Thermoelectric Performance

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Chinese Journal of Structural Chemistry 2020年第5期39卷 821-830页

作者： ZHANG chao-hua WANG Yi-Bo LI Jun-Qin LIU Fu-Sheng College of Materials Science and Engineering Shenzhen Key Laboratory of Special Functional MaterialsShenzhen Engineering Laboratory for Advanced Technology of CeramicsGuangdong Research Center for Interfacial Engineering of Functional MaterialsInstitute of Deep Underground Sciences and Green EnergyShenzhen UniversityShenzhen 518060China

The widespread applications of thermoelectric(TE)materials in power generation and solid-state cooling require improving their TE figure of merit(ZT)***,GeTe-based alloys have shown great promise as mid-temperature TE materials with superhigh TE performance,mostly due to their relatively high-degeneracy band structures and low lattice thermal *** this perspective,we review the most recent progress of the GeTe-based TE alloys from the view of phase and defect *** two strategies are the most widely-used and efficient approaches in GeTe-based alloys to optimize the transport properties of electrons and phonons for high *** phase transition from rhombohedral to cubic structure is believed to improve the band convergence of GeTe-based alloys for higher electrical *** defects in GeTe-based alloys include the point defects from Ge vacancies and substitutional dopants,linear and planar defects from Ge *** defect engineering of GeTe-based alloys is important not only for optimizing the carrier density but also for tuning the band structure and phonon-scattering *** summarized strategies in this review can also be used as a reference for guiding the further development of GeTe-based alloys and also other TE materials.

关键词： GeTe thermoelectric phase defect Ge vacancies

Using particle swarm optimization algorithm in an artificial neural network to forecast the strength of paste filling material

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Journal of China University of Mining and Technology 2008年第4期18卷 551-555页

作者： CHANG Qing-liang ZHOU hua-qiang HOU chao-jiong School of Mines China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

In order to forecast the strength of filling material exactly, the main factors affecting the strength of filling material are analyzed. The model of predicting the strength of filling material was established by applying the theory of artificial neural net- works. Based on cases related to our test data of filling material, the predicted results of the model and measured values are com- pared and analyzed. The results show that the model is feasible and scientifically justified to predict the strength of filling material, which provides a new method for forecasting the strength of filling material for paste filling in coal mines.

关键词： mining engineering paste filling material neural network particle swarm optimized algorithm prediction

Cerium Salt Promoted Homocoupling Reaction of Dialkylanilines in Water

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Chemical Research in Chinese Universities 2008年第2期24卷 226-230页

作者： YANG Xiang-hua LU Wen-chao LIAO Qian XI Chan-juan Key Laboratory for Bioorganic Phosphorus Chemistry ＆ Chemical Biology Ministry of Education Department of Chemistry Tsinghua University Beijing 100084 P. R. China

Highly regioselective homocoupling of N,N-dialkylanilines can be achieved in water with cerium reagents, in which various N,N,N′,N′-tetraalkylbenzidines are obtained from N,N-dialkylanilines either by direct oxidati... 详细信息

关键词： Homocoupling Regioselectivity Cerium salts N,N-Dialkylaniline N,N,N′,N′-Tetraalkylbenzidine

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五硫化二磷应用开发研究进展

河南化工 2024年第6期41卷 18-25页

作者：刘周恩华超苗刚郑雄飞中国科学院过程工程研究所北京100191 湖北三峡实验室湖北宜昌443007 湖北吉星化工集团有限责任公司湖北宜昌443007

研究了五硫化二磷的应用开发趋势和特点。详细论述了五硫化二磷下游产品的应用、开发及市场前景。加强以高纯五硫化二磷为原料的下游产品的应用开发,以扩大对五硫化二磷的需求,并提高其附加值,促进五硫化二磷行业发展。

关键词：五硫化二磷应用开发高纯化高值化

Microstructure and property of laser additive manufactured alloy Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si after aged at different temperatures

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Rare Metals 2024年第5期43卷 2275-2281页

作者： Guo-chao Li Xu Cheng hua-Ming Wang National Engineering Laboratory of Additive Manufacturing for Large Metallic Components and Engineering Research Center of Ministry of Education on Laser Direct Manufacturing for Large Metallic Components School of Materials Science and EngineeringBeihang UniversityBeijing 100191China

The solid solution and aging treatment for conventional manufacturing processes might not be suitable for laser additive manufactured titanium alloys due to the different lamellar *** this study,the influence of aging temperatures(600,700 and 800°C)on microstructure and mechanical properties of titanium alloy Ti-6Al-2V-1.5Mo-0.5Zr-0.3Si was *** results indicate that after solid solution treatment at 970°C followed by water quenching,the alloy mainly consists of coarsening lamellar a phase in martensite α' *** at 600°C will not change the size of primary lamellar α phase but lead to huge amount of secondary a phases(α_(s))generating with very fine *** increasing the aging temperature,the number of α_(s) decreases but with coarsened *** aged at 800°C,the width of the asphase reaches 350 nm,almost 7 times wider than that aged at 600°*** changing size of α_(s) obviously influences the property of the *** fine α_(s) leads to high strength and microhardness but low plasticity,and specimen aged at 700°C with suitable assize has the best comprehensive properties.

关键词： α+βtitanium alloy Laser additive manufacturing Solid solution and aging treatment Microstructure Room temperature tensile property