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Journal of Materials Science & Technology 2023年第27期158卷 1-8页

作者： Zhifei zhang Liang Chen Huajie Luo yueyun zhang Yonghao Yao Guanfu Liu He Qi Jun Chen Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical ChemistryUniversity of Science and Technology BeijingBeijing 100083China Hainan University Haikou 570228China

Piezoelectric ceramics with high mechanical quality factor Q_(m) and large piezoelectric coefficient d_(33) are urgently required for advanced piezoelectric applications.However,obtaining both of these prop-erties simultaneously remains a difficult challenge due to their mutually restrictive relationship.Here 0.5Pb(Ni_(1/3)Nb_(2/3))O_(3)-0.5Pb(Zr_(0.3)Ti_(0.7))O_(3) piezoceramic with tetragonal(T)-rich MPB is designed as a matrix to construct the defect engineering by doping low-valent Mn ions.The strong coupling of defect dipole and T-rich phase can effectively hinder the rotation of P_(s),restrict domain wall motion and improve Q_(m).At the same time,the substituted Mn ions will introduce local random field,destroying the long-range or-dering of ferroelectric domain and reducing domain size.The miniaturized domain structure can increase poling efficiency and inhibit the reduction of d_(33).Guided by this strategy,Q_(m) has increased by more than 10 times and d_(33) has only decreased by about 25%.The optimized electromechanical performance with Q_(m)=822,d_(33)=502 pC/N,k_(p)=0.55 and tanδ=0.0069 can be obtained in the present study.

关键词： PNN-PZT ceramics Defect engineering Domain miniaturization High mechanical quality factor Q_(m) Large piezoelectric coefficient d_(33)

High-performance ferroelectric based materials via high-entropy strategy:Design,properties,and mechanism

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InfoMat 2023年第12期5卷 28-53页

作者： yueyun zhang Liang Chen Hui Liu Shiqing Deng He Qi Jun Chen Beijing Advanced Innovation Center for Materials Genome Engineering and Department of Physical ChemistryUniversity of Science and Technology BeijingBeijingthe People's Republic of China Hainan University Haikouthe People's Republic of China

High-performance ferroelectric materials are widely used in various electronic devices owing to the function of mutual conversion among different energies,which mainly relates to their special structure gene of polarization configuration.Recent researches show that the high-entropy strategy has emerged as an effective and flexible approach for boosting physical properties in high-entropy ferroelectrics via the delicate design of local polarization configurations and other intrinsic effects caused by entropy increment,such as entropy stabilization,lattice disorder,inhibition of grain coarsening,improved mechanical properties,cocktail effect,and so on.In this review,the recent research progress about high-entropy ferroelectrics has been summarized,especially for the directional design of novel local polarization configurations according to the characteristics of different electrical properties such as high piezoelectricity,high-efficiency energy storage,and large electrostriction,providing a guidance for designing and exploring more novel local polarization configurations in high-entropy ferroelectrics for generating higher performance.

关键词： ferroelectric materials high performance high-entropy design local structure polarization configuration

大规格SWRS82B钢盘条同圈抗拉强度波动原因分析及改善措施

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金属热处理 2024年第1期49卷 273-278页

作者：李月云王雷李建华张宇江苏省(沙钢)钢铁研究院江苏苏州215625

通过对SWRS82B钢盘条进行同圈抗拉强度、化学成分与显微组织分析,找出了同圈抗拉强度波动大的原因是搭接点处存在异常组织。采用热模拟试验对SWRS82B钢盘条连续冷却过程进行分析,同时检测斯太尔摩冷却情况,找出了异常组织形成原因,结果... 详细信息

通过对SWRS82B钢盘条进行同圈抗拉强度、化学成分与显微组织分析,找出了同圈抗拉强度波动大的原因是搭接点处存在异常组织。采用热模拟试验对SWRS82B钢盘条连续冷却过程进行分析,同时检测斯太尔摩冷却情况,找出了异常组织形成原因,结果表明,成分中V元素的加入使得珠光体与贝氏体转变区分离,在冷速≥3℃/s、温度低于550℃时将发生贝氏体转变。由于佳灵装置(是一种安装在斯太尔摩上,用于调节搭接点与非搭接点风量分配的装置)角度设置不合理,搭接点风速较大,过冷奥氏体发生了部分低温转变,相变产物为珠光体+贝氏体,使得同圈抗拉强度波动较大。对佳灵装置与风机风量进行调整,降低了搭接点冷速,将同圈抗拉强度波动由102 MPa降低至49 MPa,抗拉强度合格率由88%提高到100%。

关键词： SWRS82B钢盘条抗拉强度波动热模拟试验异常组织佳灵装置工艺优化

Tunable bismuth doping/loading endows NaTaO_(3)nanosheet highly selective photothermal reduction of CO_(2)

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Nano Research 2023年第2期16卷 2142-2151页

作者： Mengmeng zhang Changhua Wang yueyun Wang Songmei Li Xintong zhang Yichun Liu Key Laboratory of Ultraviolet(UV)-Emitting Materials and Technology of Chinese Ministry of Education Northeast Normal UniversityChangchun 130024China

Photothermal CO_(2)reduction with H2O,integrating advantages of photocatalysis driven H2O splitting and thermal catalysis promoted CO_(2)reduction,has drawn sharply increasing attention in artificial synthesis of solar fuels.The photothermal effect of metal nanoparticles facilities CO_(2)hydrogenation and activation of lattice oxygen in oxide photocatalyst promotes H2O oxidation,which is essentially considered for highly efficient photothermal catalysis.However,the large thermal conductivity of most metal nanoparticles induces inevitable heat dissipation,restricting the increase of catalyst temperature.In this work,to minimize the heat dissipation,we employ bismuth nanoparticles as photothermal unit,which is of the lowest thermal conductivity in the metal family.Meanwhile,we adopt bismuth doped NaTaO_(3)as photocatalytic unit because of the bismuth doping induced activation of lattice oxygen.The bismuth nanoparticles are assembled with bismuth doped NaTaO_(3)through one-step tunable transformation from Bi4TaO8Cl.Benefiting from the photothermal effect,thermal insulation caused by bismuth metal,and lattice oxygen activation by bismuth doping,the NaTaO_(3):Bi hybrid exhibits high photothermal catalytic performance.The yield of CO over NaTaO_(3):Bi hybrid at 413 K via photothermal catalysis is 141 times higher than that room temperature photocatalysis.Further,ultraviolet(UV)light irradiation leads to 89.2%selectivity of CO and visible light irradiation leads to 97.5%selectivity of CH4.This work may broaden the photocatalytic application of ABO_(3)perovskite and provides a novel strategy for the development of photothermal catalysts for artificial photosynthesis.

关键词： CO_(2)reduction photothermal catalytic NaTaO_(3) bismuth high selectivity

宫颈癌免费筛查女性生殖道沙眼衣原体感染与高危型人乳头瘤病毒感染的关联性研究

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中国肿瘤 2024年第4期33卷 334-340页

作者：张颖婕刘佩意王贺周丽萍王月云南方医科大学公共卫生学院广东广州510515 深圳市妇幼保健院广东深圳518028 深圳市疾病预防控制中心深圳市现代毒理学重点实验室广东深圳518055 深圳市罗湖区妇幼保健院广东深圳519000

[目的]分析宫颈癌免费筛查女性中生殖道沙眼衣原体(GCT)感染与高危型人乳头瘤病毒(HR-HPV)感染的关联性。[方法]采用横断面研究设计,选取2021年11月至2022年5月期间于深圳市罗湖区妇幼保健院参加宫颈癌免费筛查的1494名健康女性为研究对... 详细信息

[目的]分析宫颈癌免费筛查女性中生殖道沙眼衣原体(GCT)感染与高危型人乳头瘤病毒(HR-HPV)感染的关联性。[方法]采用横断面研究设计,选取2021年11月至2022年5月期间于深圳市罗湖区妇幼保健院参加宫颈癌免费筛查的1494名健康女性为研究对象,通过问卷调查收集研究对象的人口学资料、生活习惯、性行为史及生殖生育史。采用Logistic回归模型分析女性GCT感染与HR-HPV感染的关联性。[结果]GCT的阳性率为4.4%,HR-HPV的阳性率为11.0%。其中,GCT阳性组的女性HR-HPV阳性率(25.8%)高于阴性组(10.4%)(P<0.001)。多因素Logistic回归模型结果显示,在校正人口学资料、生活习惯、性行为史和生殖生育史后,GCT感染与HR-HPV感染存在显著关联(OR=2.80,95%CI:1.51~5.19)。[结论]女性GCT感染与HR-HPV感染有显著关联性,GCT感染的女性HR-HPV感染的可能性更大,应加强对这部分人群的预防保健、早期筛查和及时干预工作。

关键词：高危型人乳头瘤病毒沙眼衣原体宫颈癌影响因素

基于延庆冬奥村公共组团的可持续给排水设计探讨

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给水排水 2024年第5期50卷 102-107页

作者：张庆康朱跃云关若曦高来泉李斌曹亮中国建筑设计研究院有限公司北京100044 北京国家高山滑雪有限公司北京102101

结合延庆冬奥村公共组团给排水设计,阐述和总结了可持续给排水设计的主要原则。针对三处主要功能空间,详细介绍了赛时赛后的给排水设计思考和技术措施:运动休闲区预留土建条件和设备安装空间;综合诊所区增设临时设施并充分利旧;餐厅厨... 详细信息

结合延庆冬奥村公共组团给排水设计,阐述和总结了可持续给排水设计的主要原则。针对三处主要功能空间,详细介绍了赛时赛后的给排水设计思考和技术措施:运动休闲区预留土建条件和设备安装空间;综合诊所区增设临时设施并充分利旧;餐厅厨房区按永久设施一次性实施到位;消防设备按永久设施安装到位,消防主干管路由避让赛后改造区域。通过灵活的可持续设计策略,旨在实现既满足赛时需求又降低赛后改造难度的双目标。

关键词：可持续设计冬奥村设计原则赛时赛后

猪卵泡液外泌体处理卵巢颗粒细胞的SNP/Indel筛选分析

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畜牧兽医学报 2024年第2期55卷 576-586页

作者：刘阳光章会斌文浩宇谢帆赵世明丁月云郑先瑞殷宗俊张晓东安徽农业大学动物科技学院合肥230036

旨在分析卵泡液外泌体对卵巢颗粒细胞基因的影响,了解卵泡液外泌体在卵泡发育过程中的调控机理,为母猪繁殖研究提供理论依据。本研究选取6月龄、健康状态良好且体重相近的二元母猪为材料,屠宰后收集卵巢150枚,利用梯度离心法获取卵泡液... 详细信息

旨在分析卵泡液外泌体对卵巢颗粒细胞基因的影响,了解卵泡液外泌体在卵泡发育过程中的调控机理,为母猪繁殖研究提供理论依据。本研究选取6月龄、健康状态良好且体重相近的二元母猪为材料,屠宰后收集卵巢150枚,利用梯度离心法获取卵泡液外泌体与猪卵巢颗粒细胞(porcine ovarian granulosa cells,POGCs),并在体外将卵泡液外泌体与猪卵巢颗粒细胞共培养。通过RNA-seq技术对猪卵巢颗粒细胞(granulosa cell samples,GC,n=3)和与外泌体共培养的猪卵巢颗粒细胞(granulosa-exosome co-culture samples,GCE,n=3)进行测序。结果显示,在GC和GCE组中平均每个样品获得5.54×10^(7)条clean reads,Q20和Q30质量得分均在92%以上。在GC和GCE组的6个样品中共获得1310979个SNPs突变和104498个InDel突变,其中纯合型SNP/Indel突变数量为170426个,杂合型SNP/Indel突变数量为1245052个,突变杂合子数目明显高于纯合子且SNP的发生率较高。另外,在突变类型中,转换类型共计973003个,颠换类型339974个,转换的类型显著高于颠换类型。经基因注释,突变主要发生在基因3′UTR、5′UTR、内含子区域,其次为外显子和基因间隔区。另外,通过与差异基因对比后,够筛选出1583个候选基因,经GO和KEGG功能富集发现,候选基因主要与细胞周期以及细胞增殖/凋亡过程相关。此外,共发现14个与细胞周期、增殖/凋亡通路相关的关键候选基因,其中11个基因存在互作关系。本研究获得的这些SNP/Indel信息可为后续研究外泌体在母猪生殖上的调控奠定科学基础。

关键词：猪卵泡液外泌体卵巢颗粒细胞 SNP RNA-seq

Non-specific phospholipase C4 hydrolyzes phosphosphingolipids and phosphoglycerolipids and promotes rapeseed growth and yield

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Journal of Integrative Plant Biology 2023年第11期65卷 2421-2436页

作者： Bao Yang Jianwu Li Jiayu Yan Ke zhang Zhewen Ouyang Yefei Lu Huili Wei Qing Li Xuan Yao Shaoping Lu yueyun Hong Xuemin Wang Liang Guo National Key Laboratory of Crop Genetic Improvement Hubei Hongshan LaboratoryHuazhong Agricultural UniversityWuhan 430070China Department of Biology University of MissouriSt.LouisMO 63121USA Donald Danforth Plant Science Center St.LouisMO 63132USA Yazhouwan National Laboratory Sanya 572025China

Phosphorus is a major nutrient vital for plant growth and development,with a substantial amount of cellular phosphorus being used for the biosynthesis of membrane phospholipids.Here,we report that NON-SPECIFIC PHOSPHOLIPASE C4(NPC4)in rapeseed(Brassica napus)releases phosphate from phospholipids to promote growth and seed yield,as plants with altered NPC4 levels showed significant changes in seed production under different phosphate conditions.Clustered regularly interspaced short palindromic repeat(CRISPR)/CRISPR-associated nuclease 9(Cas9)-mediated knockout of Bna NPC4 led to elevated accumulation of phospholipids and decreased growth,whereas overexpression(OE)of Bna NPC4resulted in lower phospholipid contents and increased plant growth and seed production.We demonstrate that Bna NPC4 hydrolyzes phosphosphingolipids and phosphoglycerolipids in vitro,and plants with altered Bna NPC4 function displayed changes in their sphingolipid and glycerolipid contents in roots,with a greater change in glycerolipids than sphingolipids in leaves,particularly under phosphate deficiency conditions.In addition,Bna NPC4-OE plants led to the upregulation of genes involved in lipid metabolism,phosphate release,and phosphate transport and an increase in free inorganic phosphate in leaves.These results indicate that Bna NPC4 hydrolyzes phosphosphingolipids and phosphoglycerolipids in rapeseed to enhance phosphate release from membrane phospholipids and promote growth and seed production.

关键词： inorganic phosphorus non-specific phospholipase C4 phosphate deficiency phospholipids phosphorus use efficiency rapeseed

Water-promoted regio-selective trifluoromethylation of vinyl conjugated diazoacetates

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Organic Chemistry Frontiers 2022年第1期9卷 204-209页

作者： Xinxin Han Xin Liu yueyun Bao Hunahuan Song Yu-Rou Zhao Xiaoying Wang Junjie zhang Le Liu Xin-Hua Duan Jinbo Hu Mingyou Hu School of Chemistry Xi’an Key Laboratory of Sustainable Energy Material Chemistryand MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Jiaotong UniversityXi’an 710049China Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China

An efficient trifluoromethylation reaction of vinyldiazoacetates under mild reaction conditions was depicted.Pre-generated CuCF_(3) was used as a trifluoromethylation reagent and water acted as both a promoter and proton source.The reaction is compatible with a broad scope of functional groups and easy to scale-up.The wide functional group tolerance of the reaction enables further synthetic manipulation of the products.

关键词： products vinyl conjugated

Independent and Interactive Effects of Environmental Conditions on Aerosolized Surrogate SARS-CoV-2-Beijing,China,June to September 2020

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China CDC weekly 2022年第26期4卷 565-569,I0004,I0005页

作者： Yixin Mao yueyun Luo Wenda zhang Pei Ding Xia Li Fuchang Deng Kaiqiang Xu Min Hou Cheng Ding Youbin Wang Zhaomin Dong Raina MacIntyre Xiaoyuan Yao Song Tang Dongqun Xu China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina Chinese Center for Disease Control and Prevention BeijingChina University of South Carolina ColumbiaSCUSA School of Space and Environment Beihang UniversityBeijingChina Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang UniversityBeijingChina The Kirby Institute Faculty of MedicineThe University of New South WalesSydneyNSWAustralia Center for Global Health School of Public HealthNanjing Medical UniversityNanjingJiangsu ProvinceChina

Summary What is already known about this topic?Environmental factors such as temperature and humidity play important roles in the transmission of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)via droplets/aerosols.What is added by this report?Higher relative humidity(61%–80%),longer spreading time(120 min),and greater dispersal distance(1 m)significantly reduced SARS-CoV-2 pseudovirus loads.There was an interaction effect between relative humidity and spreading time.What are the implications for public health practice?The findings contribute to our understanding of the impact of environmental factors on the transmission of SARS-CoV-2 via airborne droplets/aerosols.

关键词： humidity finding interaction