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Secular Changes of Stature in Rural Children and Adolescents in China, 1985-2010

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Biomedical and Environmental Sciences 2014年第8期27卷 573-581页

作者： cheN Tian Jiao JI cheng ye Institute of Child and Adolescent Health School of Public Health Peking University Health Science Center

Objective To analyze and assess secular change in stature in rural children and adolescents in China from 1985 to 2010. Methods Data were obtained from the 6 rounds of the Chinese National Survey on Student＇s Constitution and Health. The subjects enrolled in the study were children and adolescents aged 7-18 years in rural areas of provincial capitals. Results An overall positive secular trend in stature occurred in rural areas of provincial capitals in China from 1985 to 2010. The overall average increase rates were 3.1 and 2.4 cm/decade for boys and girls, respectively. The total body height increases for grown up boys and girls were 3.6 and 2.3 cm and the increase rates were 1.4 and 0.9 cm/decade, respectively. There were differences in body height increase among eastern, central and western regions. The average body height of the children or adolescents in eastern region was highest, followed by central region and western region. The overall increase rates in central region were highest among the three regions. The difference between eastern/central region and western region was obvious. 〈br〉 Conclusion Positive secular trend in stature of children or adolescents has occurred in rural area of China, and rural boys and girls showed a great potential for continuous growth. More attention should be paid to the differences in children＇s body height between western region and eastern/central region.

关键词： Secular change Stature Rural population Regional difference Child and adolescent

Effect of Stress Ratio on the Fatigue Crack Propagation Behavior of the Nickel-based GH4169 Alloy

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Acta Metallurgica Sinica(English Letters) 2017年第9期30卷 809-821页

作者： Shen ye Jian-Guo Gong Xian-cheng Zhang Shan-Tung Tu cheng-cheng Zhang Key Laboratory of Pressure Systems and Safety Ministry of EducationSchool of Mechanical and Power EngineeringEast China University of Science and TechnologyMeilongRoad 130Xuhui DistrictShanghai 200237People'sRepublic of China AECC Commercial Aircraft Engine Co.LTD ShanghaiEngineering Research Center for Commercial Aircraft EngineShanghai 201108People's Republic of China

The fatigue crack growth behavior of the newly developed GH4169 nickel-based alloy at a maximum stress of 700 MPa and different stress ratios was investigated in the present work employing the specimens with a single micro- notch at a frequency of 129 Hz at room temperature. The results demonstrate a typical three-stage process of fatigue crack propagation processing from the microstructurally small crack （MSC） stage to the physically small crack （PSC） stage, and finally to the long crack stage. The crack growth rate in the MSC stage is relatively high, while the crack growth rate in the PSC stage is relatively low. A linear function of crack-tip reversible plastic zone size was proposed to predict the crack growth rate, indicating an adequate prediction solution.

关键词： Fatigue crack Crack growth rate Stress ratio Nickel-based alloy

Enhancing blocking temperature using inverse hydrogen bonds for non-radical bridged dimeric Dy(Ⅲ)single-molecule magnets

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Science China chemistry 2024年第10期67卷 3328-3338页

作者： Peng-Bo Jin Qian-cheng Luo ye-ye Liu Yan-Zhen Zheng Frontier Institute of Science and Technology State Key Laboratory of Electrical Insulation and Power EquipmentMOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Key Laboratory of Electronic Devices and Material Chemistry and School of ChemistryXi’an Jiaotong UniversityXi’an 710054China

Single-molecule magnets(SMMs)are a kind of nanosized magnetic materials that are capable of storing massive bytes of *** coupling the spin centers in a proper manner is a usual approach to promote the working temperature(or blocking temperature)for *** delocalized radicals have been widely employed to accomplish this ***,we show a new manner by using weak but multiple B–H^(δ-)···Dy^(3+)inverse hydrogen bonding(IHB)interactions to control the magnetic couplings in a series of dimeric dysprosiacaborane *** approach leads to a record high T_(B)^(100s)of 10 K among non-radical bridged dimeric SMMs,which is mainly ascribed to strong ferromagnetic coupling(4.38 cm^(-1))and the proper alignment of the magnetic principle axes of the adjacent dysprosium(Ⅲ)*** verifying by theoretical calculations,these results demonstrate that IHB interactions can be used to construct strong axial ferromagnetic coupling and enhancing magnetic blocking temperature for SMMs.

关键词： single-molecule magnets carborane dysprosium ferromagnetic coupling inverse hydrogen bond

活血化淤汤对超声乳化白内障吸除术后黄斑区的保护作用(英文)

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国际眼科杂志 2011年第3期11卷 381-384页

作者：林静赵桂秋马岩王青杨珊珊胡丽婷车成业姜楠张京芬青岛大学医学院附属医院眼科中国山东省青岛市266003

目的:探讨活血化淤汤对超声乳化白内障吸除术后黄斑区的保护作用。方法:单纯年龄相关性白内障患者130例140眼分为A,B两组,A组80眼常规超声乳化吸除术;B组60眼行超声乳化吸除术后给予活血化瘀汤口服两个疗程,A,B两组分别于术前、术后1d;1... 详细信息

目的:探讨活血化淤汤对超声乳化白内障吸除术后黄斑区的保护作用。方法:单纯年龄相关性白内障患者130例140眼分为A,B两组,A组80眼常规超声乳化吸除术;B组60眼行超声乳化吸除术后给予活血化瘀汤口服两个疗程,A,B两组分别于术前、术后1d;1,2,4,6,8wk及3mo观察最佳矫正视力、角膜及房水情况、黄斑中心凹视网膜厚度及黄斑区组织变化情况。结果:术后3mo,B组视力≥1.0的比例明显高于A组,差别有统计学意义。术后1wk,B组房水轻度闪辉比例明显低于A组,差别有统计学意义。术后1,2,4,6,8wk;3mo白内障超声乳化术后出现中心注视点厚度增加,A,B两组术后2～8wk与术前比较差异均有统计学意义;其中A组11眼(13.7%)出现术后黄斑水肿,均发生于术后2～6wk,包括9眼中心凹增厚及2眼黄斑囊样水肿,其中7眼3mo内水肿消失;B组2眼(3.3%)出现术后黄斑水肿,包括1眼中心凹增厚及1眼黄斑囊样水肿,发生于术后4～6wk,到术后3mo水肿消失。术后2～8wk,B组中心凹厚度低于A组,差异有统计学意义。结论:白内障超声乳化术后黄斑部呈现厚度增加的趋势,造成一定程度的视力下降,少数人会出现黄斑囊样水肿,术后口服中药活血化瘀汤后视力≥1.0的比例明显提高,黄斑中心凹的厚度及黄斑水肿的发生率大大降低,提示了活血化瘀汤对超声乳化白内障吸除术后黄斑区的保护作用。

关键词：活血化淤汤超声乳化白内障吸除术黄斑水肿光学相干断层扫描

Towards gauge unified,supersymmetric hidden strong dynamics

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Chinese Physics C 2021年第1期45卷 16-31页

作者： cheng-Wei Chiang Sichun Sun Fang ye Department of Physics NTUTaipei Department of Physics and Center for Mathematics and Theoretical Physics NCUTaoyuan Institute of Physics Academia SinicaTaipei Physics Division NCTSHsinchu Institute for Advanced Study The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong

We consider a class of models with extra complex scalars that are charged under both the Standard Model and a hidden strongly coupled S U(N)h gauge sector and discuss the seenarios in which the new scalars are identified as the messenger fields that mediate the spontaneously broken supersymmetries from the hidden sector to the visible *** new scalars are embedded into 5-plets and 10-plets of an S(/(5)v gauge group that potentially unifies the Standard Model gauge *** Higgs bosons remain as elementary *** the supersymmetrized version of this class of models,vector-like fermions whose left-handed components are superpartners of the new scalars are *** to the hidden strong force,the new low-energy scalars hadronize before decaying and thus evade the common direct searches of the supersymmetric *** can be seen as a gauge mediation seenario with the scalar messenger fields forming low-energy bound *** also discuss the possibility that in the tower of bound states formed under hidden strong dynamics(of at least the TeV scale),there exist a dark matter candidate and the collider signatures(***,diboson,or dijet)of models that may show up in the near future.

关键词： collider searches beyond the standard model extra complex scalars

Varicella-zoster virus ORF7 interacts with ORF53 and plays a role in its trans-Golgi network localization

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Virologica Sinica 2017年第5期32卷 387-395页

作者： Wei Wang Wenkun Fu Dequan Pan Linli Cai Jianghui ye Jian Liu che Liu Yuqiong Que Ningshao Xia Hua Zhu Tong cheng State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics National Institute of Diagnostics and Vaccine Development in Infectious Diseases School of Public Health Xiamen University Department of Microbiology Biochemistry and Molecular Genetics New Jersey Medical SchoolRutgers University

Varicella-zoster virus(VZV) is a neurotropic alphaherpesvirus that causes chickenpox and shingles. ORF7 is an important virulence determinant of VZV in both human skin and nerve tissues,however, its specific function and involved molecular mechanism in VZV pathogenesis remain largely elusive. Previous yeast two-hybrid studies on intraviral protein-protein interaction network in herpesviruses have revealed that VZV ORF7 may interact with ORF53, which is a virtually unstudied but essential viral protein. The aim of this study is to identify and characterize VZV ORF53, and to investigate its relationship with ORF7. For this purpose, we prepared monoclonal antibodies against ORF53 and, for the first time, characterized it as a ~40 k Da viral protein predominantly localizing to the trans-Golgi network of the infected host cell. Next, we further confirmed the interaction between ORF7 and ORF53 by co-immunoprecipitation and co-localization studies in both plasmid-transfected and VZV-infected cells. Moreover, interestingly, we found that ORF53 lost its trans-Golgi network localization and became dispersed in the cytoplasm of host cells infected with an ORF7-deleted recombinant VZV, and thus ORF7 seems to play a role in normal subcellular localization of ORF53. Collectively, these results suggested that ORF7 and ORF53 may function as a complex during infection, which may be implicated in VZV pathogenesis.

关键词： varicella-zoster virus(VZV) ORF7 ORF53 protein-protein interaction trans-Golgi network

Recent Advances in Boron-Containing Acenes:Synthesis,Properties,and Optoelectronic Applications

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Chinese Journal of chemistry 2023年第11期41卷 1355-1373页

作者： Yongkang Guo cheng chen Xiao-ye Wang State Key Laboratory of Elemento-Organic chemistry Frontiers Science Center for New Organic MatterCollege of ChemistryNankai UniversityTianjin300071 China

Acenes with linearly fused benzene rings have attracted much attention due to their intriguing optical and electronic ***,the poor ambient stability of longer acenes has hampered the investigation of their physicochemical properties and potential *** incorporation of main group elements into the acene backbones provides a viable strategy to enhance the stability,and meanwhile,generates a new family of heteroatom-doped acenes(namely heteroacenes)with modified properties and *** particular,boron-containing acenes represent an attractive class of heteroacenes owing to the existence of vacant p orbital of boron,which endows theπ-conjugated systems with appealing features,such as Lewis acidity,electron-accepting capability,stimuli-responsivity,and adjustable photophysical *** the past decade,significant progress has been achieved in the synthesis and applications of boron-containing acenes,but a focused review on this topic has been ***,we summarize the recent advances in the studies on boron-containing acenes,covering their synthesis,intriguing properties,and various applications in electroluminescence and electronic devices,as well as in biosensors,*** hope that this timely review will stimulate new research interest in this unique family of materials and promote their optoelectronic applications.

关键词： Acenes Boron Heteroacenes Luminophores Multi-color emission Light-emitting devices Organic optoelectronics Organicsemiconductors

Effect of Cold Rolling Parameters on the Longitudinal Residual Stress Distribution of GH4169 Alloy Sheet

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Acta Metallurgica Sinica(English Letters) 2015年第12期28卷 1510-1517页

作者： Neng-Yong ye Ming cheng Shi-Hong Zhang Institute of Metal Research Chinese Academy of Sciences

For plastic deformed parts, the dimensional accuracy is significantly affected by residual stresses and so does the performance in service. Therefore, the rolling process of GH4169 alloy sheet at room temperature was investigated by finite element method. The effects of rolling reduction, friction coefficient, rolling velocity and initial stress on the longitudinal residual stress distribution over the thickness of GH4169 alloy sheet were analyzed. The results show that the values of longitudinal residual stress can be slightly reduced by increasing the rolling reduction and velocity. The longitudinal residual stress over the thickness distributes as ‘‘V＇＇ type or weak ‘‘W＇＇ type. The initial stress mainly has an effect on the longitudinal stress in the backward slip area. But the friction coefficient has remarkable influence on longitudinal residual stress. With the friction coefficient increasing from 0.1 to 0.5, the value of longitudinal residual stress on the sheet surface is reduced by 282 MPa. Simultaneously, the tensile stress turns into compressive stress with a strong‘‘W＇＇ type distribution.

关键词： GH4169 alloy Cold rolling Residual stress Process parameters

Large negative hyperpolariza-bilities (β) of the protonated Schiff bases of the azulenic retinal analogues

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Chinese Science Bulletin 2001年第10期46卷 831-835页

作者： Peng Wang cheng ye Center for Molecular Science Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing China

The molecular first hyperpolarizabilities (β) and electronic properties of some azulenic retinal analogues and their derivatives have been investigated theoretically by employing semiempirical approaches. The results indicate that the protonated Schiff bases (PSB) of the 2-substituted azulenic retinal analogues possess extremely large negative β values and very good transparency. These can be attributed to the large difference between the ground state dipole moment and the first excited state dipole moment according to the electronic property analysis. The characteristic blue-shifted absorption in polar solvents of the 2-substituted PSB chromophores can be well explained by the negative solva-tochromic effects. The largest calculated |μβ| value can reach the magnitude of 10-44 esu, which is close to the highest reported values of synthesized chromophores.

关键词： molecular first hyperpolarizability nonlinear optics azulene retinal derivatives theoretical calculation.