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Mesozoic-Cenozoic Multi-Stage Intraplate Deformation Events in the Langshan Region and their Tectonic Implications

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Acta Geologica Sinica(English Edition) 2014年第1期88卷 78-102页

作者： zhang jin LI jinyi LI Yanfeng QI Wenhua zhang Yiping Institute of Geology Chinese Academy of Geological Sciences National Earthquake Response Support Service Institute of Geology Chinese Earthquake Administration

In the Langshan region, northwestern China, marked multi-stage intraplate deformation events have occurred since the Mesozoic, including（1） northeast-striking ductile left-lateral strike slip during the Middle-Late Triassic, which is closely related to the collision between the North China and the Yangtze plates;（2） top-to-the-southeast thrust with northwest-southeast trending maximum compression during the Late Jurassic;（3） nearly eastward detachment during the Early Cretaceous;（4） top-to-the-northwest thrust with northwest-southeast trending maximum compression during the Late Cretaceous and Early Cenozoic;（5） northeast-striking brittle left-lateral strike slip with nearly north-south trending maximum compression; and（6） northwest-southeast extension during the Middle-Late Cenozoic. All these deformation events belong to the intraplate deformation across the entire Central Asian region and respond to the tectonic events along the plate boundaries or deep tectonics. The structures developed in early events in the crust were the most important factors controlling the later deformation styles, and few new structures have later developed. Based on previous research and our results, the paleostress inversion in the Langshan region shows that the Mesozoic intraplate deformations in the study region mainly resulted from the tectonic events from the Paleo-Pacific region and have no or a weak relation to the Tethys region. During the Late Jurassic, the maximum compression from the Mongolia-Okhotsk region cannot be excluded. The Langshan region is the bridge between southern Mongolia and the western Ordos tectonic belt and is thus important to understand the nature and relationship between both regions.

关键词： Langshan intraplate deformation Mesozoic Cenozoic North China Craton Alxa block

Analysis of PID Control Based on the Balance Equation 36

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Analysis of PID Control Based on the Balance Equation

Fabrication of metal suspending nanostructures by nanoimprint lithography(NIL) and isotropic reactive ion etching(RIE)

第36届中国控制会议

作者： jin zhang Wei Cao CNPC Beijing Richfit Information Technology

ISBN: (纸本)9781538629185

In this paper,the Balance Equation is derived based on the theory of Internal Model Control(IMC).It is revealed that there is a linear algebraic relationship between the proportional and integral contributions of the PID controller *** analysis of the Balance Equation,it is found that loss of balance between the proportional and integral contributions is the root cause for the degradation of controller *** gain and reset time,process time constant and time delay,are all factors that affect the balance between the proportional and integral contributions.

关键词： PID Control Proportional Contribution Integral Contribution Internal Model Control

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Science China(Technological Sciences) 2009年第5期52卷 1181-1186页

作者： XIE GuoYong zhang jin zhang YongYi zhang YingYing ZHU Tao LIU ZhongFan Center for Nanoscale Science and Technology(CNST) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Nanotechnology Industrialization Base of China Tianjin 300457China

We report herein a rational approach for fabricating metal suspending nanostructures by nanoimprint lithography(NIL) and isotropic reactive ion etching(RIE).The approach comprises three principal steps:(1) mold fabrication,(2) structure replication by NIL,and(3) suspending nanostructures creation by isotropic *** this approach,suspending nanostructures with Au,Au/Ti or Ti/Au bilayers,and Au/Ti/Au sandwiched structures are *** Au nanostructures,straight suspending nanostructures can be obtained when the thickness of Au film is up to 50 nm for nano-bridge and 90 nm for nano-finger *** the thickness of Au is below 50 nm for nano-bridge and 90 nm for nano-finger,the Au suspending nanostructures bend upward as a result of the mismatch of thermal expansion between the thin Au films and Si *** leads to residual stresses in the thin Au *** Au/Ti or Ti/Au bilayers nanostructures,the cantilevers bend toward Au film,since Au has a larger thermal expansion coefficient than that of *** in the case of sandwich structures,straight suspending nanostructures are obtained,this may be due to the balance of residual stress between the thin films.

关键词： suspending nanostructure fabrication nanoimprint lithography(NIL) isotropic reactive ion etching(RIE)

Late Mesozoic-Cenozoic Exhumation of the Northern Hexi Corridor：Constrained by Apatite Fission Track Ages of the Longshoushan

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1624-1643页

作者： zhang Beihang zhang jin WANG Yannan ZHAO Heng LI Yanfeng Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China National Earthquake Response Support Service Beijing 100049 China

The apatite fission track（AFT） ages and thermal modeling of the Longshoushan and deformation along the northern Hexi Corridor on the northern side of the Qinghai-Tibetan Plateau show that the Longshoushan along the northern corridor had experienced important multi-stage exhumations during the Late Mesozoic and Cenozoic. The AFT ages of 7 samples range from 31.9 Ma to 111.8 *** modeling of the AFT ages of the samples shows that the Longshoushan experienced significant exhumation during the Late Cretaceous to the Early Cenozoic（-130-25 Ma）. The Late Cretaceous exhumation of the Longshoushan may have resulted from the continuous compression between the Lhasa and Qiangtang blocks and the flat slab subduction of the Neo-Tethys oceanic plate, which affected wide regions across the Qinghai-Tibetan Plateau. During the Early Cenozoic, the Longshoushan still experienced exhumation, but this process was caused by the Indian-Eurasian collision. Since this time,the Longshoushan was in a stable stage for approximately 20 Ma and experienced erosion. Since -5 Ma,obvious tectonic deformation occurred along the entire northern Hexi Corridor, which has also been reported from the peripheral regions of the Qinghai-Tibetan Plateau, especially in the Qilianshan and northeastern margin of the plateau. The AFT ages and the Late Cenozoic deformation of the northern Hexi Corridor all indicate that the present northern boundary of the Qinghai-Tibetan Plateau is situated along the northern Hexi Corridor.

关键词： apatite fission track Mesozoic Cenozoic Hexi Corridor Qinghai-Tibetan Plateau

Dy_(2-x)Y_xTi_2O_7: phonon vibration and magnetization with dilution

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Rare Metals 2015年第2期34卷 81-88页

作者： Hui Liu You-Ming Zou Shi-Le zhang Ran-Ran zhang Chang-jin zhang Yu-Heng zhang High Magnetic Field Laboratory Chinese Academy of Sciences and University of Science and Technology of China

In this paper, the dilution effects of non-magnetic Y ions on spin-ice compound Dy_2Ti_2O_7 by infrared and Raman spectra and magnetization measurements were investigated. An anomalous phonon softening with temperature decreasing is found in both the parent and diluted compounds, and Y doping can relax the softening of phonons except that of the IR mode near 233 cm^-1, indicating a strong phonon–phonon coupling in the spin-ice *** magnetization measurements reveal that the nonmagnetic impurities do not severely influence the spin-ice rules in the ground state when the level of dilution is not very high. However, a large amount of dilution enhance the disorder and break the spin-ice state because the collective spin-flip clusters are no longer available.

关键词： Dilution effect Spin ice Pyrochlore Frustration

Pion-photon and kaon-photon transition distribution amplitudes in the Nambu–Jona-Lasinio model

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Chinese Physics C 2024年第8期48卷 94-103页

作者： jin-Li zhang Jun Wu Department of Mathematics and Physics Nanjing Institute of TechnologyNanjing 211167China National Laboratory of Solid State Microstructures Department of PhysicsNanjing UniversityNanjing 210093China

The Nambu–Jona-Lasinio model is utilized to investigate the pion-and kaon-photon leading-twist transition distribution amplitudes using proper time ***,the properties of the vector and axial vector pion-photon transition distribution amplitudes are examined,and the results meet the desired *** study involves sum rule and polynomiality *** vector and axial vector pion-photon transition form factors that are present in theπ^(+)→γe^(+)νprocess are the first Mellin moments of the pion-photon transition distribution *** vector transition form factor originates from the internal structure of hadrons,the axial current can be coupled to a pion,this pion is virtual,and its contribution will be present independently of the external *** kaon transition form factors are *** vector form factor's value at zero momentum transfer is determined by the axial anomaly,while this is not the case for the axial *** vector and axial form factors,as well as the neutral pion vector form factor F_(πγγ)(t),are *** to our findings,the pion axial transition form factor is harder than the vector transition form factor and harder than the electromagnetic form *** also discuss the link betweenπ−γandγ−πtransitions distribution amplitudes.

关键词： transition form factors NJL model transition distribution amplitudes

Relationship between entero-hepatic bile acid circulation and interdigestive migrating myoelectrical activity in rats

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World Journal of Gastroenterology 2005年第34期11卷 5377-5380页

作者： Ping Fang Lei Dong Wei-jin zhang jin-Yan Luo Department of Internal Medicine Second Hospital of Xi'an Jiaotong University Xi'an 710004 Shaanxi Province China Division of Cardiovascular Physiology and Pharmacology Medical School of Xi'an Jiaotong University Xi'an 710061 Shaanxi Province China

AIM： To investigate the effects of entero-hepatic bile add circulation on the inter-digestive migrating myoelectrical complex （MMC） in rats. METHODS： Thirty-two rats were divided into four groups. Three pairs of bipolar silver electrodes were chronically implanted in the antrum, duodenum and jejunum. Three groups of Uhem were ligatecl around the upper part of common bile duct （CBD）. The experiments were performed in consdous and fasting state. The gastrointestinal myoelectrical activity was recorded. Ursodeoxycholic acid （UDCA） and saline were then perfused into stomachs of two groups with CBD obstruction and the effects of them on the MMC were observed. RESULTS： A typical pattern of MMC was observed in normal fasting rats. MMC of antral and duodenal origin disappeared temporarily in earlier stage of CBD obstruction. While MMC of jejunum origin appeared. increased MMC cycle duration was seen after 4 d in rats with CBD obstruction. The MMC after CBD obstruction was characterized by an increased duration of phase Ⅱ-like activity and decreased duration of phase Ⅰ ＆ Ⅲ activity. Perfusion into stomachs with UDCA resulted in a shorter MMC cycle duration and a longer duration of phase III of duodenal origin compared to the normal group. CONCLUSION： Entero-hepatic bile add drculation initiates inter-digestive MMC of duodenal origin.

关键词： Migrating myoelectrical complex Entero-hepatic Bile acid circulation Ursodeoxycholic acid Common bile duct obstruction

Hepatic recompensation according to the Baveno VII criteria via a transjugular intrahepatic portosystemic shunt: Is this true?

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2742-2744页

作者： jin-Shan zhang Department of General Surgery Capital Institute of PediatricsBeijing 100020China

Hepatic recompensation is firstly described in the Baveno VII criteria,which requires the fulfillment of strict ***,a primary cause of cirrhosis must be addressed,suppressed,or ***,complications of liver cirrhosis,inclu-ding ascites,encephalopathy,and variceal hemorrhage,must disappear without any ***,liver function indicators must be ***,without addressing/suppressing/curing cirrhosis and improvement in liver syn-thetic function,complications,including ascites and variceal hemorrhage can be improved by a transjugular intrahepatic portosystemic shunt(TIPS),which is not evidence of hepatic ***,on the basis of the definition of hepatic recompensation,TIPS does not achieve hepatic recompensation.

关键词： Hepatic recompensation Transjugular intrahepatic portosystemic shunt Liver function Cirrhosis

Euclidean distance harmonic method for establishing theoretical MAPK/Erk signaling pathway in treated breast cancer line MCF-7

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The Journal of China Universities of Posts and Telecommunications 2007年第1期14卷 80-84页

作者： zhang Hong-xin LU Ying-hua zhang jin-ling School of Electronic Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

Hierarchical clustering algorithms, such as Pearson＇s correlation, Euclidean distance, Euclidean distance harmonic, Spearman rank correlation, Kendall＇s tau, and City-block distance, were used to find the best way to establish theoretical MAPK/Erk signaling pathway on the basis of breast cancer line MCF-7 gene expressions. The algorithm constructs a hierarchy from top to bottom on the basis of a self-organizing tree. It dynamically finds the number of clusters at each level. It was found that only Euclidean distance harmonic is fit for the analysis of the cascade composed from a RAF1 （c-Raf）, a MKNK1, a MAPKK （MEK1/2） to MAPK （Erk） in breast cancer line MCF-7. The result is consistent with the biological experimental MAP/Erk signaling pathway, and the theoretical MAPK/Erk signaling pathway on breast cancer line MCF-7 is set up.

关键词： hierarchical clustering signaling pathway,Euclidean distance harmonic