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Ore-finding method of fault tectono-geochemistry in the Tongchang Cu-Au polymetallic orefield, Shaanxi, China:Ⅰ. Dynamics of tectonic ore-forming processes and prognosis of concealed ores

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Chinese Journal Of Geochemistry 2009年第4期28卷 397-404页

作者： HAN Runsheng MA Deyun WU peng MA Gengsheng Kunming University of Science and Technology Southwest Institute of Geological Survey Geological Survey Center for Non-ferrous Mineral Resources Kunming 650093 China Open Laboratory of Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China

Based on the research content and conception of dynamics of tectonic ore-forming processes, with the focus on the dynamics and processes of mineral source, ore formation, transport, accumulation, dissipation and mineralization in response to magmatic invasion and metallogenic fluid under tectonic stress, this paper deals with the ore-finding method of fault tectono-geochemistry and its application on the basis of ore deposit genesis, "giant pressure shadow" structure and ore-finding method of tectonic stress field in the Tongchang orefield, expounds the rules of magmatic emplacement and ore fluid migration and concentration under the control of the structural stress field, hence providing the theoretical basis for the localization and prognosis of concealed ores. The fault tectono-geochemical features show that the Cu-Au polymetallic ore deposits (mineralization) in the orefield are closely related with volcano-(exhalation) sedimentation, magmatism and tectono-reworking. Fault tectono-geochemical anomalies can be applied to prognosis of metallogenetic target areas for ore exploration and can provide strong evidence of "giant pressure shadow" structure. In addition, quite a number of important target areas have been defined in combination with the characteristics of the tectonic stress field, and part of the target areas have been proved by practical activities.

关键词：构造地球化学多金属矿田隐伏矿预测构造方法断层构造成矿过程铜金找矿

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D-B-PREINVEX TYPE MAPPINGS

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Journal of Systems Science & Complexity 2006年第1期19卷 93-100页

作者： Jianwen peng Xinmin YANG Weidong RONG College of Mathematics and Computer Science Chongqing Normal UniversityChongqing 400047 China Department of Mathematics Inner Mongolia University Hohhot 010021 China

In this paper, such new definitions as D-B-preinvexity, strictly D-B-preinvexity and explicitly D-B-preinvexity for vector-valued mappings are firstly introduced. Then, a sufficient condition of D-B-preinvex mappings is shown. And then the relationship between the explicitly D-B-preinvcxity and the strictly D-B-preinvexity is discussed. Finally, some properties of D-B-preinvex type mappings are given.

关键词： D-B-preinvexity explicitly D-B-preinvexity relationship strictly D-B-preinvexity.

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Novel way to research nonlinear feedback shift register

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Science China(Information Sciences) 2014年第9期57卷 161-174页

作者： ZHAO DaWei peng Haipeng LI LiXiang HUI SiLi YANG YiXian Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Zhejiang Provincial Key Lab of Data Storage and Transmission Technology Hangzhou Dianzi University National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Shandong Provincial Key Laboratory of Computer Network Shandong Computer Science Center

In this paper,we regard the nonlinear feedback shift register(NLFSR)as a special Boolean network,and use semi-tensor product of matrices and matrix expression of logic to convert the dynamic equations of NLFSR into an equivalent algebraic *** on them,we propose some novel and generalized techniques to study ***,a general method is presented to solve an open problem of how to obtain the properties(the number of fixed points and the cycles with different lengths)of the state sequences produced by a given NLFSR,i.e.,the analysis of a given *** then show how to construct all 22n-(l-n)/22n-lshortest n-stage feedback shift registers(nFSR)and at least 22n-(l-n)-1/22n-l-1shortest n-stage nonlinear feedback shift registers(nNLFSR)which can output a given nonperiodic/periodic sequence with length ***,we propose two novel cycles joining algorithms for the construction of full-length ***,two algorithms are presented to construct 22n-2-1different full-length nNLFSRs,respectively.

关键词： nonlinear feedback shift register semi-tensor product Boolean network full-length nNLFSR binary sequence

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10-Hertz squeezed light source generation on the cesium D_(2)line using single photon modulation

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Frontiers of physics 2023年第3期18卷 167-174页

作者： Guan-Hua Zuo Yu-Chi Zhang Gang Li peng-Fei Zhang peng-Fei Yang Yan-Qiang Guo Shi-Yao Zhu Tian-Cai Zhang State Key Laboratory of Quantum Optics and Quantum Optics Devices Collaborative Innovation Center of Extreme OpticsInstitute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China College of Physics and Electronic Engineering Shanxi UniversityTaiyuan 030006China Department of Physics Zhejiang UniversityHangzhou 310027China Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceCollege of Physics and OptoelectronicsTaiyuan University of TechnologyTaiyuan 030024China

Generation of squeezed light source is a promising technique to overcome the standard quantum limit in precision ***,we demonstrate an experimental generation of quadrature squeezing resonating on the cesium D_(2)line down to 10 Hz for the first *** maximum squeezing in audio frequency band is 5.57 ***,we have presented a singlephoton modulation locking to control the squeezing angle,while effectively suppressing the influence of laser noise on low-frequency *** whole system operates steadily for *** generated low-frequency squeezed light source can be applied in quantum metrology,light–matter interaction investigation and quantum memory in the audio frequency band and even below.

关键词： squeezed state optical parametric amplifier low-frequency squeezing

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Th lymphocyte subsets in patients with Vogt-KoyanagiHarada disease

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International Journal of Ophthalmology(English edition) 2019年第2期12卷 207-211页

作者： Liang Liang Xiao-Yan peng Hong Wang The First Affiliated Hospital of Chongqing Medical University Chongqing Key Laboratory of Ophthalmology and Chongqing Eye Institute Beijing Tongren Eye Center Beijing Key Laboratory of Ophthalmology and Visual Science Beijing Tongren HospitalCapital Medical University

AIM: To assess helper T(Th) lymphocyte subset balance in patients with Vogt-Koyanagi-Harada(VKH) disease. METHODS: Sixty-eight active VKH patients and seventytwo inactive VKH patients were included in this study. One hundred healthy individuals served as controls. Peripheral blood was obtained from VKH patients and healthy controls. Th lymphocyte subsets were analyzed by flow cytometry. Plasma concentration of interleukin(IL)-17, IL-10, transforming growth factor(TGF)-β, IL-23 and IL-6 was examined by enzyme-linked immunosorbent assay(ELISA). RESULTS: VKH patients with active uveitis had significantly higher percentages of both Th1 and Th17 cells and lower percentages of regulatory T(Treg) cells as compared with inactive VKH patients and healthy controls. Th1/Th2 and Th17/Treg ratios were also significantly elevated in active VKH patients. The percentages of Th1, Th17 and Treg cells and the Th1/Th2, Th17/Treg ratio did not differ between inactive VKH patients and healthy controls. There was no difference concerning the percentage of Th2 cells among all the groups. VKH patients with active uveitis showed an elevated level of peripheral Th17 related cytokines levels(TGF-β, IL-6, IL-23, and IL-17) and a decreased level of Treg related cytokines(IL-10) compared with inactive VKH patients and healthy controls. Inactive VKH patients showed no differences in peripheral Th17 related cytokines(TGF-β, IL-6, IL-23, and IL-17) and Treg related cytokines(IL-10) levels compared with healthy controls. CONCLUSION: Th1 and Th17 cells are significantly increased and Treg cells significantly decreased in active VKH compared with inactive VKH or healthy controls. Therefore, Th lymphocyte subset analysis may serve as a disease biomarker for VKH.

关键词： Vogt-Koyanagi-Harada disease Th lymphocyte Th17 cell Treg cell cytokines

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A surgical simulation system for predicting facial soft tissue deformation

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Computational Visual Media 2016年第2期2卷 163-171页

作者： Xiaodong Tang Jixiang Guo peng Li Jiancheng Lv Machine Intelligence Lab Sichuan University West China College of Stomatology Sichuan University

In the field of cranio-maxillofacial(CMF)surgery, surgical simulation is becoming a very powerful tool to plan surgery and simulate surgical results before actually performing a CMF surgical *** prediction of facial soft tissue changes is in particular essential for better preparation and to shorten the time taken for the operation. This paper presents a surgical simulation system to predict facial soft tissue changes caused by the movement of bone segments during CMF surgery. Two experiments were designed to test the feasibility of this simulation system. The test results demonstrate the feasibility of fast and good prediction of post-operative facial appearance, with texture. Our surgical simulation system is applicable to computer-assisted CMF surgery.

关键词： cranio-maxillofacial(CMF) surgery finite element model(FEM) soft tissue model view-controller

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B, Sr, O and H Isotopic Compositions of Formation Waters from the Bachu Bulge in the Tarim Basin

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Acta Geologica Sinica(English Edition) 2006年第4期80卷 550-556页

作者： CAI Chunfang peng Licai MEI Bowen XIAO Yingkai Key Laboratory of Mineral Resources Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 Department of Engineering Mechanics Tsinghua University Beijing 100084 Yangtze University Jingzhou Hubei 434023 Qinghai Institute of Salt Lake Chinese Academy of Sciences Xining Qinghai 810008

In order to elucidate the origin and migration of basinal brines in the Bachu Bulge, Tarim Basin, we have carried out analyses on chemical composition, and boron, hydrogen and oxygen isotopes of formation waters together with the XRD of clay minerals from the Paleozoic strata. The waters show Ca, B, Li and Sr enrichment and SO4 depletion in the Carboniferous and Ordovician and K enrichment in part of the Ordovician relative to seawater. The relationship between δD and δ^18O shows that all the data of the waters decline towards the Global Meteoric Water Line with the intersection of them close to the present-day local meteoric water, suggesting that modern meteoric water has mixed with evaporated seawater. The ^87Sr/^86Sr ratios range from 0.7090 to 0.7011, significantly higher than those of the contemporary seawater. The δ^11B values range from ＋19.7 to ＋32.3‰, showing a decrease with the depth and B concentrations. The results suggest that isotopically distinct B and Sr were derived from external sources. However, since the percentages of illite are shown to increase with depth among clay minerals in the study area, i.e., illite is due to precipitation rather than leaching during deeper burial, it is unlikely for illite to have contributed a significant amount of B to the waters. Thus, B with low δ^11B values is interpreted to have been added mainly from thermal degradation of kerogen or the basalts in the Cambrian and Lower Ordovician.

关键词： δ^11B formation water water-rock interaction Tarim Basin

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Estimation of time series noise covariance using correlation technology

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控制理论与应用（英文版） 2011年第2期9卷 165-170页

作者： Ma, Tao Chen, Jie peng, Zhihong Chen, Wenjie School of Automation Beijing Institute of Technology Beijing 100081 China Beijing Institute of Technology Beijing 100081 China

Covariance of clean signal and observed noise is necessary for extracting clean signal from a time *** is transferred to calculate the covariance of observed noise and clean signal's MA process,when the clean signal is described by an autoregressive moving average (ARMA) *** the correlations of the innovations data from observed time series to form a least-squares problem,a concisely autocovariance least-square (CALS) method has been proposed to estimate the *** also extended our work to the case of unknown MA process *** between Odelson's autocovariance least-square (ALS) estimation algorithm and the proposed CALS method show that the CALS method could get a much more exact and compact estimation of the covariance than ALS and its extended form.

关键词： Time series Correlation technology Covariance estimation Least-square method

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Precambrian organic matter

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Chinese Science Bulletin 2000年第4期45卷 295-304页

作者： Chao Li Ping’an peng Guoying Sheng Jiamo Fu Chinese Acad Sci Guangzhou Inst Geochem Canton 510640 Peoples R China

The late progress of the research on Precambrian organic matter in biomarkers, isotopes and relative analytical techniques is reviewed. The key problems in the research of Precambrian organic matter, such as indigenous test of soluble organic matter, are also discussed. At the end, the further work upon Precambrian organic matter is suggested.

关键词： Precambrian organic matter biomarkers stable carbon isotope kerogen degradation indigenous test.

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Changes of matrix metalloproteinases in the stroma after corneal cross-linking in rabbits

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International Journal of Ophthalmology(English edition) 2021年第1期14卷 26-31页

作者： Hong-Zhen Jia Xu Pang Xiu-Jun peng Department of Ophthalmology the Sixth Medical Center of Chinese PLA General HospitalBeijing 100048China

AIM:To observe changes in the content of matrix metalloproteinases(MMPs)in the corneal stroma after corneal cross-linking(CXL)in rabbits,and further explore the corneal pathophysiological process after ***:Forty-two rabbits(42 eyes)were randomly divided into seven *** group served as the control group,while the other six groups were treated with *** concentrations of MMPs in corneal stroma were evaluated through parallel reaction monitoring at baseline and 3,7,15,30,90,and 180 d after ***:The levels of MMP-2 in the corneal stroma of rabbits were 0.76±0.07,2.78±1.39,4.12±0.69,2.00±0.29,2.00±0.30,1.22±0.18,and 1.35±0.18(10^(-9)mol/g)at baseline and 3,7,15,30,90,and 180 d after treatment,*** contents of tissue inhibitor of metalloproteinase-1(TIMP-1)were 1.83±0.26,7.94±0.58,6.95±2.64,3.81±0.48,3.07±0.92,1.72±0.19,and 1.69±0.74(10^(-9)mol/g),*** ratios of MMP-2/TIMP-1 were 0.42±0.33,0.36±0.20,0.62±0.10,0.54±0.15,0.68±0.13,0.71±0.10,and 0.68±0.09,*** CXL,the expression of MMP-2 and TIMP-1 in the rabbit corneal stroma was initially increased and subsequently *** levels of MMP-2 remained higher than those recorded at baseline 180 d after treatment,but it was not statistically *** levels of TIMP-1 returned to baseline levels at 90 d after *** ratio of MMP-2/TIMP-1 started to rise from 7 d after *** was significantly higher than that calculated at baseline 30-180 d after *** results for MMP-1,-3,-7,-9,-13,and TIMP-2 were ***:CXL can lead to changes in the content of MMP-2 and TIMP-1 in the rabbit corneal *** ratio of MMP-2/TIMP-1 remains higher versus baseline,indicating that MMP-2 is involved in the corneal pathophysiological process after CXL.

关键词： corneal cross-linking keratoconus rabbit riboflavin matrix metalloproteinase

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