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| 1 | Effect mechanisms of micro-alloying element La on microstructure and mechanical properties of hypoeutectic Al-Si alloys显示文摘The rare earth influence on the as-cast micro structures and mechanical properties of aluminum alloys attracted great attentions in the last decades.But up to date no reports can be found on the effect of microalloying element La(La addition is below 0.1 wt.%) on the solidification of hypoeutectic Al-Si alloys.This study carried out solidification experiments with Al-6 Si alloys micro-alloyed by element La.The α-Al grain refinement,the eutectic Si modification and the tensile properties improvement caused by microalloying element La were investigated.The effect mechanisms of La were discussed.It is demonstrated that the addition of La as low as 100 ppm can deprave the more effective heterogeneous nucleation conditions for the eutectic Si caused by the impurity P.The addition of 0.06 wt.% La is sufficient to achieve an ideal α-Al grain refinement,eutectic Si modification and ductility improvement of the alloys.LaAlSi phase forms in the Al-Si alloy with the additive amount of La higher than 0.06 wt.%.It has a tetragonal structure.Micro-alloying element La refines the α-Al grains by working as a surfactant and modifies the eutectic Si by promoting the formation of the significant multiple Si twins. | Qiuju Zheng Lili Zhang Hongxiang Jiang Jiuzhou Zhao Jie He | 2020 | Journal of Materials Science & Technology2020，47，12： | 18 |
| 2 | Effect of micro-alloying La on precipitation behavior, mechanical properties and electrical conductivity of Al-Mg-Si alloys显示文摘The rapid industrial development calls for alloys that possess higher comprehensive properties. In this study, the effect of microalloying La addition on the precipitation behavior during artificial aging as well as the mechanical properties and electrical conductivity of Al-Mg-Si alloys were investigated by thermal analysis, microstructural characterizations and properties tests.The results demonstrated that micro-alloying La addition does not change the whole precipitation sequence during the artificial aging of Al-Mg-Si alloys as well as the atomic structure of the precipitates. However, the higher La-vacancy binding energy as well as the strong La-Si and La-Mg interactions can decrease the solubility of Si and Mg in the Al matrix and the β″ precipitation activation energy from 89.9 to 76.7 kJ/mol, leading to the improvement of the strength and electrical conductivity of Al-Mg-Si alloys simultaneously. The microstructural features affecting the strength and electrical conductivity were theoretically discussed in terms of the La addition. | ZHENG QiuJu JIANG HongXiang HE Jie ZHANG LiLi ZHAO JiuZhou | 2021 | Science China(Technological Sciences)2021，64，9： | 3 |
| 3 | Senp2 regulates adipose lipid storage by de-SUMOylation of Setdbl显示文摘 | Quan Zheng Ying Cao Yalan Chen Jiqiu Wang Qiuju Fan Xian Huang Yiping Wang Tianshi Wang Xiuzhi Wang Jiao Ma Jinke Cheng | 2018 | Journal of Molecular Cell Biology2018，10，3： | 2 |
| 4 | Vertical distribution and migration of global fallout Pu in forest soils in southwestern China显示文摘 | Bu Wenting Zheng Jian Guo Qiuju | 2014 | Journal of Environmental Radioactivity2014，136，： | 1 |
| 5 | Functional groups to modify g-C3N4 for improved photocatalytic activity of hydrogen evolution from water splitting显示文摘Rational modification by functional groups was regarded as one of efficient methods to improve the photocatalytic performance of graphitic carbon nitride(g-C3 N4).Herein,g-C3 N4 with yellow(Y-GCN)and brown(C-GCN)were prepared by using the fresh urea and the urea kept for five years,respectively,for the first time.Experimental results show that the H2 production rate of the C-GCN is 39.06μmol/h,which is about 5 times of the Y-GCN.Meantime,in terms of apparent quantum efficiency(AQ.E)at 420 nm,C-GCN has a value of 6.3%and nearly 7.3 times higher than that of Y-GCN(0.86%).The results of XRD,IR,DRS,and NMR show,different from Y-GCN,a new kind of functional group of—N=CH—was firstly in-situ introduced into the C-GCN,resulting in good visible light absorption,and then markedly improving the photocatalytic performance.DFT calculation also confirms the effect of the—N=CH—group band structure of g-C3N4.Furthermore,XPS results demonstrate that the existence of—N=CH—groups in C-GCN results in tight interaction between C-GCN and Pt nanoparticles,and then improves the charge separation and photocatalytic performance.The present work demonstrates a good example of'defect engineering'to modify the intrinsic molecular structure of g-C3N4 and provides a new avenue to enhance the photocatalytic activity of g-C3N4 via facile and environmental-friendly method. | Fan Yu Laichun Wang Qiuju Xing Dengke Wang Xunheng Jiang Guangchao Li Anmin Zheng Fanrong Ai Jian-Ping Zou | 2020 | Chinese Chemical Letters2020，31，6： | 1 |
| 6 | A wireless intelligent thermal control and management system for piglet in large-scale pig farms显示文摘Indoor temperature is a critical environmental factor for piglets that affects the health,welfare,and production efficiency of domesticated pigs.However,there are limited reports about wireless intelligent thermal control and management system for piglets in largescale pig farms,and evaluation energy saving.This paper presents an Automatic Thermal Control and Management System(ATCMS)of micro-environment for piglets,that could provide a suitable production environment and reduce the energy consumption.ATCMS includes automatic temperature control system(ATCS),multipoint temperature management system(MTMS)and remote access.The infrared heating lamps are chosen in the ATCS for their good performance in heating rate and heating distribution.In order to meet a scientific temperature requirements of piglet growth,the suitable thermal ranges of each growth-stage(STREG)are employed as intelligent control strategies to generate an automatic and precise heating control.MTMS is responsible for communicating with ATCSs and transmitting information to database server for record based on wireless technology.Remote access offers information services for remote administrators by smart phones and clients via Internet.The experiments of ATCMS were carried out both in winter and summer at Binsheng Breeding Piggery Farm,Acheng City,Heilongjiang Province,China.Results showed that the temperature provided by ATCS had been kept in STREG of piglets during the whole winter period.When the indoor temperature during summer period were in or above STREG,heating lamps were turned off by ATCS for a long time.The energy consumption of ATCS were 63.60%in winter and 39.35%in summer with continuous heating system operation.Therefore,ATCMS could take the suitable thermal ranges of each growth-stage as an intelligent control principle to give an automatic and precise control to heating devices in order to meet a scientific temperature requirements of piglet growth. | Ping Zheng Jicheng Zhang Honggui Liu Jun Bao Qiuju Xie Xiaohua Teng | 2021 | Information Processing in Agriculture2021，8，2： | 1 |
| 7 | Clue to a New Deafness Gene:A Large Chinese Nonsyndromic Hearing Loss Family Linked to DFNA4显示文摘Hereditary hearing loss is one of the most common neurosensory defects in humans.Approximately 70%of cases are nonsyndromic and could be inherited in autosomal dominant, autosomal recessive,mitochondrial,X-linked,and Y-linked manners(Wang et al.,2004;Alford,2011).The autosomal dominant type,comprising 15%-20%of nonsyndromic hearing loss,is monogenic and genetically heterogeneous.Since the first dominant deafness | Liang Zong Chunye Lu Yali Zhao Qian Li Dongyi Han Weiyan Yang Yan Shen Qingyin Zheng Qiuju Wang | 2012 | Journal of Genetics and Genomics2012，39，12： | 0 |
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