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Chinese Physics Letters 2013年第10期30卷 152-155页

作者： TAN ting-ting CHEN Xi guo ting-ting LIU Zheng-Tang State Key Lab of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072

Resistive switching characteristics of hafnium oxide are studied for possible nonvolatile memory device *** HfOx films with different oxygen contents are deposited by rf magnetron sputtering under different O_(2) flow *** films are amorphous,and the stoichiometric of the film is improved by increasing the O_(2) flow ***-voltage characteristics of the TiN/HfOx/ITO device are investigated with 1 mA *** bipolar resistive switching behavior is observed for the TiN/HfOx/ITO structure,and the resistive switching mechanism of the TiN/HfOx/ITO structure is explained by trap-controlled space charge limit current conduction.

关键词： structure conduction amorphous

EXPERIMENTAL AND NUMERICAL INVESTIGATION OF TURBULENT AIR-CUSHION-CASCADE

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Journal of Hydrodynamics 2002年第2期14卷 41-44页

作者： guo, ting-ting Li, Shao-Hua Wang, guo-Hui Xu, Zhong Xi'an Jiaotong Univ. Xi'an 710049 China Northeast China Inst. of Electron. Jilin 132012 China

Experimental and numerical studies of air-cushion-cascade were conducted and described. The SIMPLE algorithm combined with the normal k-Ε turbulence model was adopted to simulate the air-phase flow. The experiment was carried out by an IFA 300 anemometer. The flow field was measured for different ratios of main-stream velocity to jet velocity, different numbers of gaps and a couple of gap widths. The contour of the air-cushion was obtained, and the numerical calculations gave a closed-form result. The results show that the air-cushion thickness would increase with the increase of the jet velocity, gap width and gap number mainly determined by the jet in the former half cascade. The possibility to achieve anti-erosion by the turbulent jet was examined and confirmed.

关键词： Anemometers Computer simulation Computer software Erosion Flow of fluids Turbulent flow

NUMERICAL SIMULATION OF TURBULENT JETS WITH LATERAL INJECTION INTO A CROSSFLOW

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Journal of Hydrodynamics 2006年第3期18卷 319-323页

作者： guo ting-ting LI Shao-hua XU Zhong Department of＇Energy and mechanical Engineering Northeast Dianli University Jilin 132012 China School of Energy and Power Engineering Xi＇an Jiaotong UniversityXi＇an 710049China

In this paper, Numerical simulations of mean velocity and turbulent kinetic energy fields are presented for three-dimensional lateral jet in crossflow, at the injection angles of -60° and -30 °. The RNG κ- ε turbulence model, with the two-layer wall function method, is adopted to simulate the characteristics of this flow at the jet-to-crossflow velocity ratios, 1, 2 and 4. The results show that the injection angle and jet-to-crossflow velocity ratio can change the flow fields, and the range upstream affected by jet injected laterally increase and the curvature of jet trajectories varies along the flow direction. Furthermore, the separation events in the lee of the jet exit and behind the jet bending-segment have been found, and the mechanisms of two vortex systems are analyzed.

关键词： turbulent jet turbulence model numerical simulation flow field

A Novel 3D Cd^(Ⅱ)-CP Based on a Bi-functional(N-/O-Sites) Triazole-modified Carboxyl Ligand:Structure,Topology and Photoluminescence

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Chinese Journal of Structural Chemistry 2022年第2期41卷 85-90,I0009页

作者： ZHAO Dan guo ting-ting AN Yan-Yan YAN Juan-Zhi Taiyuan University Taiyuan 030032China

With triazole-modified derivative as link,one new framework[Cd_(5)(μ_(5)-HL^(2-))_(2)(μ_(4)-L^(3-))_(2)(H_(2)O)_(10)]·2H_(2)O(1,H_(3)L=2-(1,2,4-triazol-1-yl)benzene-1,3,5-tricarboxylic acid) has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction,powder X-ray diffraction and elemental *** 1exhibits a 3D (3,4,6)-connected net cross-linked by binuclear[Cd_(2)(COO)_(5)]^(-)cluster and mononuclear Cd(Ⅱ)geometry via HL^(2-)/L^(3-)*** crystallizes in triclinic system,space group P1 with a=7.7411(11),b=9.8813(15),c=20.177(3)?,α=85.547(4)°,β=80.603(4)°,γ=67.976(3)°,V=1411.3(4)?^(3),Z=1,M_(r)=1876.89g/mol,D_(c)=2.208 mg/m^(3),μ=1.97 mm^(-1),F(000)=918,GOOF=1.03,the final R=0.0869 and w R=0.1950 for3127 observed reflections with I>2σ(I).The solid photoluminescent behaviour of 1 has been further functionally investigated.

关键词： triazole Cd(Ⅱ)complex crystal structure fluorescence property

High gene flows promote close genetic relationship among finewool sheep populations(Ovis aries) in China

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Journal of Integrative Agriculture 2016年第4期15卷 862-871页

作者： HAN Ji-long YANG Min guo ting-ting LIU Jian-bin NIU Chun-e YUAN Chao YUE Yao-jing YANG Bo-hui Lanzhou Institute of Husbandry and Pharmaceutical Sciences Chinese Academy of Agricultural Sciences Lanzhou 730050 P. R. China Institute of Animal Science Chinese Academy of Agricultural Sciences Beijing 100193 P.R. China

The aim of our present study was to construct genetic structure and relationships among Chinese fine-wool sheep breeds. 46 individuals from 25 breeds or strains were genotyped based on the Illumina Ovine 50K SNP array. Meanwhile, genetic variations among 482 individuals from 9 populations were genotyped with 10 microsatellites. In this study, we found high genetic polymorphisms for the microsatellites, while 7 loci in the Chinese superfine Merino strain （Xinjiang types）（CMS） and 5 loci in Gansu alpine superfine-wool sheep strain （GSS） groups were found deviated from Hardy-Weinberg equilibrium （HWE）. Genetic drift FsT=0.019 （P〈0.001） and high gene flows were detected in all the 7 fine-wool sheep populations. Phylogenetic analysis showed fine-wool sheep populations were clustered in a group independent from the Chinese indigenous breeds such that the 7 fine-wool sheep clustered distinct from Liangshan semifine-wool sheep （LS） and Hu sheep （HY） reflected by different population differentiation analyses. Overall, our findings suggested that all fine-wool sheep populations have close genetic relationship, which is consistent with their breeding progress. These populations, therefore, can be regarded as open-breeding populations with high levels of gene flows. Furthermore, the two superfine-wool strains, viz., CMS and GSS, might be formed by strong artificial selection and with frequent introduction of Australian Merino. Our results can assist in breeding of superfine-wool sheep and provide guidance for the cultivation of new fine-wool sheep breeds with different breeding objectives.

关键词： Chinese fine-wool sheep indigenous sheep breeds genetic relationship gene flow microsatellites

Molecular characterization of two candidate genes associated with coat color in Tibetan sheep(Ovis arise)

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Journal of Integrative Agriculture 2015年第7期14卷 1390-1397页

作者： HAN Ji-long YANG Min guo ting-ting YUE Yao-jing LIU Jian-bin NIU Chun-e WANG Chao-feng YANG Bo-hui Lanzhou Institute of Husbandry and Pharmaceutical Sciences Chinese Academy of Agricultural Sciences Institute of Animal Science Chinese Academy of Agricultural Sciences College of Veterinary Medicine Gansu Agricultural University

Coat color is a key economic trait in sheep. Some candidate genes associated with animal＇s coat color were found. Partic- ularly, v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog （KIT） and microphthalmia-associated transcription factor （MITF） play a key role in the modulation of hair pigmentation in mammals. This study investigated those two candidate genes＇ mutations and expressions associated with wool color in Tibetan sheep. First, the gene polymorphisms of those two genes were analyzed, and then, relative mRNA expression levels of those two genes in skin tissue with different coat colors were compared. Thirdly, KIT and MITF protein expression levels were detected through Western blot and immune- histochemical. Allele C was predominant allele in the white coat color Tibetan sheep population of the MITF coding region g. 1548 C/T loci. The relative MITF mRNA expression in black coat skin tissue was significantly higher than white （P〈0.01）. However, no significant differences were detected in the KIT gene＇s mRNA expression of these two different coat color skin tissues （P〉0.05）, while the level of KIT protein expression in skin tissues of white and black coats was also roughly equivalent. Our study observed that, the level of MITF protein expression in black coat skin tissue was significantly higher than that in white coat skin tissue, and positive staining for MITF protein expression was detected mainly in the epidermis and the dermal papilla, bulb, and outer root sheath of hair follicles. We conclude that the black coat of Tibetan sheep is related to high MITF expression in the hair follicles, and MITF may be important for coat color formation of Tibetan sheep.

关键词： Tibetan sheep KIT MITF gene polymorphism gene expression coat color

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异常链路分析在电力网络恢复中的应用

电子科技大学学报 2016年第5期45卷 854-859页

作者：郭婷婷赵承业中国计量大学理学院杭州310018

在大规模瘫痪状态下的电力系统的恢复过程中,网络中的一些特殊连边起到了关键作用,这是该文提出的基于异常链路分析的网络重构策略的主要思想。通过链路预测算法对网络中真实存在的连边进行异常度排名,以优先恢复异常度高的电源节点为目... 详细信息

在大规模瘫痪状态下的电力系统的恢复过程中,网络中的一些特殊连边起到了关键作用,这是该文提出的基于异常链路分析的网络重构策略的主要思想。通过链路预测算法对网络中真实存在的连边进行异常度排名,以优先恢复异常度高的电源节点为目标,建立骨架网络恢复策略,然后根据链路的重要性进行骨架网络之外的线路的修复。这样不仅可以快速连通电源发电机,也能及时恢复重要线路,具有实际意义。

关键词：异常度异常链路链路预测网络重构恢复策略骨架网络

(2+1)维KdV方程的Bcklund变换和无穷守恒律

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中北大学学报（自然科学版） 2017年第3期38卷 277-281页

作者：郭婷婷山西大学商务学院山西太原030031

对双Bell多项式进行研究,并基于多维双Bell多项式和标准的Hirota双线性方程之间的关系,构造出(2+1)维KdV方程带有任意函数的双线性表达式.运用双Bell恒等式,确定(2+1)维KdV方程的双线性Bcklund变换.通过做变量变换,将(2+1)维KdV方程... 详细信息

对双Bell多项式进行研究,并基于多维双Bell多项式和标准的Hirota双线性方程之间的关系,构造出(2+1)维KdV方程带有任意函数的双线性表达式.运用双Bell恒等式,确定(2+1)维KdV方程的双线性Bcklund变换.通过做变量变换,将(2+1)维KdV方程的耦合系统线性化为含有多个参数的Lax对,并证明其满足可积性条件.此外,求得这个非线性发展方程的无穷守恒律,并准确地给出所有守恒密度和流量的递推公式.

关键词：双Bell多项式 (2+1)维KdV方程 Bcklund变换无穷守恒律 Lax对

(2+1)维KdV方程的孤子解和新Wronskian行列式解

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中北大学学报（自然科学版） 2015年第2期36卷 118-121,125页

作者：郭婷婷山西大学商务学院山西太原030031

对(2+1)维KdV方程进行研究,基于Wronskian行列式和Hirota双线性方法,应用行列式的性质,给出(2+1)维KdV方程Wronskian表示的孤子解.利用Hirota方法,在(2+1)维KdV方程经典孤子解的基础上,得出方程新的单孤子解.通过观察Wronskian行列式元... 详细信息

对(2+1)维KdV方程进行研究,基于Wronskian行列式和Hirota双线性方法,应用行列式的性质,给出(2+1)维KdV方程Wronskian表示的孤子解.利用Hirota方法,在(2+1)维KdV方程经典孤子解的基础上,得出方程新的单孤子解.通过观察Wronskian行列式元素的特征并分析所满足的色散关系,重新定义行列式元素,利用Hirota方法和Wronskian技巧,构造出新的2 N阶Wronskian行列式解,并应用行列式恒等式说明双线性型的孤子方程有Wronskian解.通过直接计算证明了两种新解的一致性.

关键词： Hirota 方法 (2+1)维 KdV 方程孤子解 Wronskian 行列式解

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固结比对粉质粘土动力学特性影响的试验研究

地球物理学进展 2016年第6期31卷 2729-2734页

作者：郭婷婷山东省工程地震研究中心济南250021 山东省地震局济南250014

在均等固结与非均等固结两种情况下,通过改变围压、轴压取值,进行了多组的粉质粘土的动剪切模量与阻尼比的相关试验.试验结果得出,在均等固结条件下,施加围压、轴压越大,其动剪切模量比数值越大;轴压、围压分别由100 k Pa增加到200 k Pa... 详细信息

在均等固结与非均等固结两种情况下,通过改变围压、轴压取值,进行了多组的粉质粘土的动剪切模量与阻尼比的相关试验.试验结果得出,在均等固结条件下,施加围压、轴压越大,其动剪切模量比数值越大;轴压、围压分别由100 k Pa增加到200 k Pa、300 k Pa,动剪切模量比随之增大,增加幅值为10%左右;阻尼比受围压、轴压影响的变化规律性不明显.在非均等固结条件下,固结比越大,其动剪切模量比数值越大;固结比数值从1增加到2,其动剪模量比增加幅值为30%左右;固结比数值从2增加到3,其动剪模量比增加幅值为10%左右;随着固结比的增加,增幅减小;其阻尼比受固结比影响的变化规律性不明显.其研究成果可为土动剪切试验的固结参数正确取值提供参考依据,并为岩土动力学特性科研工作提供基础试验资料.

关键词：动三轴试验固结比围压轴压动剪切模量阻尼比