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Chinese Chemical Letters 2011年第1期22卷 97-100页

作者： Ru Song Zhao Xia wang Jin peng yuan Shan Shan wang Chuan Ge Cheng Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province Analysis and Test Center Shandong Academy of Sciences Jinan 250014 China

A novel temperature controlled ionic liquid dispersive liquid phase microextracfion （TCIL-DLPME） coupled with rapid resolution liquid chromatography-electrospray tandem mass spectrometry （RRLC-ESI-MS-MS） has been developed for the enrichment and determination of three hexabromocyclododecane diastereomers （HBCDs） in water samples. Green solvent ionic liquid （IL） was used as extraction solvent instead of toxic organic solvents. This technique also avoided the usage of dispersive solvent. Some important parameters that might affect the extraction efficiency were optimized. Under the optimum conditions, good linear relationship, sensitivity and reproducibility were obtained. All the limits of detection for the three diastereomers were 0.1 ng/ mL. The linear range was obtained in the range of 1-100 ng/mL for the total amount of three HBCD diastereomers. It was satisfactory to analyze real environmental water samples with the recoveries ranging from 77.2% to 99.3%. The main advantage of the method is toxic organic solvent-free.

关键词： Hexabromocyclododecane Temperature controlled ionic liquid dispersive liquid phase microextraction Rapid resolution liquidchromatography-electrospray tandem mass spectrometry

Appendico-vesicocolonic fistula:A case report and review of literature

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World Journal of Clinical Cases 2022年第10期10卷 3241-3250页

作者： Han Yan Ying-Chao Wu Xin wang Yu-Cun Liu Shuai Zuo peng-yuan wang Department of General Surgery Peking University First HospitalBeijing 100032China

BACKGROUND Appendico-vesicocolonic fistulas and appendiceal-colonic fistulas are two kinds of intestinal and bladder diseases that are rarely seen in the *** our knowledge,no more than 4 cases of appendico-vesicocolonic fistulas have been publicly reported throughout the world,and no more than 100 cases of appendiceal-colonic fistulas have been *** the overall incidence is low,an early diagnosis is difficult due to their atypical initial symptoms,but these diseases still require our *** SUMMARY Here,we report a case of a 77-year-old male patient diagnosed with an appendico-vesicocolonic fistula combined with an appendiceal-colonic *** main manifestations were diarrhea and urine that contained fecal *** diagnosis was confirmed by multiple laboratory and imaging examinations.A routine urinalysis showed red blood cells and white blood *** and pelvic computed tomography scans showed close adhesions between the bowels and the bladder,and fistulas could be *** and cystoscopy and some other imaging examinations clearly showed *** preoperative diagnoses were a colovesical fistula and an appendiceal-colonic *** fistulas were repaired by laparoscopic surgical *** diseased bowel and part of the bladder wall were removed,followed by a protective *** postoperative diagnosis was an appendico-vesicocolonic fistula combined with an appendiceal-colonic fistula,and the pathology suggested inflammatory *** patient recovered well after surgery,and all his symptoms *** The final diagnosis in this case was a double fistula consisting of an appendicovesicocolonic fistula combined with an appendiceal-colonic fistula.

关键词： Appendico-vesicocolonic Appendiceal-colonic Enterovesical Fistula Laparoscopic surgery Case report

Main issues in research and practice of environmental protection for water conservancy and hydropower projects in China

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Water Science and Engineering 2016年第4期9卷 312-323页

作者： Ang Chen Miao Wu Kai-qi Chen Zhi-yu Sun Chen Shen peng-yuan wang Institute of Hydropower and Environment Research China Three Gorges Corporation School of Civil Engineering Tsinghua University College of Hydrology and Water Resources Hohai University Appraisal Center for Environment and Engineering Ministry of Environmental Protection

In this paper,we generally summarize the main issues in the operational period of water conservancy and hydropower projects in China over the past several ***,the adverse impacts of these projects since the technical guidelines were proposed in 2006 are ***,combined with projects and experience from 2006 to 2014,the four main issues are summarized:(1) There exist many questions in the design and construction of fishways,which are useful for fish migration,and the migration effects are not as expected.(2) Temperature stratification affecting the downstream fish is the major impact of temperature,and alters fish spawning in the reproduction season.(3)Ecological base flow has been one of the primary questions of the last 30 years in China,the greatest related difficulty being quantification of the amount and flow process necessary to satisfy fish life history.(4) Fish habitat protection and restoration are popular topics in recent years with the development of river ecosystem *** habitat loss due to the impacts of dam construction and habitat fragmentation has become more and more *** four issues are now the main difficulties in water project management,and interact with one another to bear combined effects on river *** issues of eco-hydraulic consideration in the design period are the key ***,future priorities for research and practice of environmental protection for water conservancy and hydropower projects in China are *** main purpose of this paper is to enhance the scientific research,monitoring,and assessment of operating effectiveness.

关键词： Temperature stratification Ecological base flow Fish habitat Environmental protection

Calibration of the DAMPE Plastic Scintillator Detector and its on-orbit performance

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Research in Astronomy and Astrophysics 2019年第3期19卷 145-154页

作者： Meng Ding Ya-peng Zhang Yong-Jie Zhang yuan-peng wang Tie-Kuang Dong Antonio De Benedittis Paolo Bernardini Fang Fang Yao Li Jie Liu peng-Xiong Ma Zhi-Yu Sun Valentina Gallo Stefania Vitillo Zhao-Min wang Yu-Hong Yu Chuan Yue Qiang yuan Yong Zhou Yun-Long Zhang Institute of Modern Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Dark Matter and Space Astronomy Purple Mountain Observatory Chinese Academy of Sciences School of Astronomy and Space Science University of Science and Technology of China Istituto Nazionale di Fisica Nucleare (INFN) - Sezione di Lecce Dipartimento di Matematica e Fisica E.De Giorgi Universit`a del Salento Department of Nuclear and Particle Physics University of Geneva Gran Sasso Science Institute INFN Laboratori Nazionali del Gran Sasso Department of Modern Physics University of Science and Technology of China

The DArk Matter Particle Explorer(DAMPE) is a space-borne apparatus for detecting the highenergy cosmic-ray-like electrons, γ-rays, protons and heavy ions. The Plastic Scintillator Detector(PSD)is the top-most sub-detector of the DAMPE. The PSD is designed to measure the charge of incident highenergy particles and it also serves as a veto detector for discriminating γ-rays from charged particles. In this paper, a PSD on-orbit calibration procedure is described, which includes the five steps of pedestal, dynode correlation, response to minimum-ionizing particles, light attenuation function and energy reconstruction.A method for reconstructing the charge of incident high energy cosmic-ray particles is introduced. The detection efficiency of each PSD strip is verified to be above 99.5%; the total efficiency of the PSD for charged particles is above 99.99%.

关键词： cosmic ray instrumentation: DAMPE charge measurement plastic scintillator detector calibration

Cyclostationary signature design for common control channel of cognitive radio

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The Journal of China Universities of Posts and Telecommunications 2009年第2期16卷 42-46页

作者： QI yuan peng Tao wang Wen-bo LUO Shi-feng School of Telecommunication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China [a]School of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

Embedding specific signatures in transmitted signals for identifying common control channels of cognitive radio are addressed in research laboratories because availability of the spectrum occupied by the common control channel might change in time. A novel solution to embed a unique cyclostationary signature for the common control channel of cognitive radio is proposed in this article. Based on linear periodically time-variant transformation （LPTV） model, the cyclic autocorrelation expression of the proposed signature is derived, which characterizes its cyclostationarity. Analysis of the cyclostationary signature is presented considering effects of additive white Gaussian noise （AWGN） and multiplath channels. Simulation results illustrating the reliability of signatures are given.

关键词： cyclostationary signature spectrum sensing cognitive radio common control channel

Amino Acids Catalyzed Direct Aldol Reactions in Aqueous Micelles

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有机化学 2003年第z1期23卷 178-179页

作者： peng Yi-yuan wang Qi DING Qiu-Ping HE Jia-Qi CHENG Jin-Pei Department of Chemistry Nankai University Tianjin 300071 Department of Chemistry Jiangxi Normal University Nanchang 330027 Department of Chemistry Nankai University Tianjin 300071 Department of Chemistry Jiangxi Normal University Nanchang 330027 Department of Chemistry Nankai University Tianjin 300071 Department of Chemistry Nankai University Tianjin 300071

　　Since the discovery of its roles as a good small-organic-molecule catalyst in intramolecular aldol reactions, pro line has drawn considerable attention in synthetic chemistry due to its similarity to the type-Ⅰ aldolases. Recently,List and others have reported some new direct asymmetric intermolecular reactions catalyzed by proline, including aldol, Mannich, Michael, and other analogous reactions. Except for two recent examples, [1,2] proline catalyzed aldol reactions in aqueous micelles have not been reported, nor have other amino acids as organocatalysts in directly catalyzing aldol reaction been reported. Herein we wish to present our recent results regarding environmentally be nign direct aldol reactions catalyzed by amino acids including proline, histidine and arginine in aqueous media.……

关键词： amino acids aldol reaction aqueous media

Bridging gaps between environmental flows theory and practices in China

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Water Science and Engineering 2019年第4期12卷 284-292页

作者： Ang Chen Miao Wu Sai-nan Wu Xin Sui Jing-ya Wen peng-yuan wang Lin Cheng Guy R.Lanza Chun-na Liu Wan-lin Jia State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin China Institute of Water Resources and Hydropower ResearchBeijing 100038China Department of Production and Technology Yangtze Ecology and Environment Co.Ltd.Wuhan 430062China College of Hydrology and Water Resources Hohai UniversityNanjing 210098China Appraisal Center for Environment and Engineering Ministry of Ecology and EnvironmentBeijing 100012China China Three Gorges Corporation Beijing 100038China World Wide Fund for Nature Beijing Office Beijing 100086China Department of Environmental and Forest Biology State University of New YorkSyracuse NY 13210USA

In recent decades,a series of policies and practices for environmental flows(e-flows)have been implemented in China,with the sustainable development goal of balancing the utilization and protection of water resources among social,economic,and ecological *** aims of this study were to determine the main challenges and issues in e-flows implementation at different scales by analyzing policies and practices for eflows in China,and to propose some recommendations for bridging the gaps between the science and implementation of *** gaps between the science and implementation of e-flows were found after review of literature,policies,and practices,and it was found that ecological flow was a more widely used term by the government,rather than e-flows,in *** plans and effects of e-flows implementation are discussed in this paper and challenges of e-flows implementation are recognized:(1)limited water resources and uneven spatial and temporal distribution,(2)a weak scientific basis for e-flows implementation,(3)poor operability of e-flows science,and(4)ineffective supervision and guarantee *** recommendations are(1)to strengthen the scientific foundation of e-flows,(2)to improve effectiveness in application of e-flows science,and(3)to propose operable and effective supervision and guarantee *** paper elaborates the current understanding of e-flows science and provides practical recommendations for implementing e-flows and for improving the effectiveness in e-flows *** bridge the gaps between science and implementation of e-flows and improve the operability of policies in future practices,more scientific research on practices is recommended through adaptive management.

关键词： Environmental flows Ecological flow Integrated water resources management Adaptive management Sustainable development

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： peng Li Meifeng Cai Shengjun Miao yuan Li Yu wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

Estrogen weakens muscle endurance via estrogen receptor-MAPK mediated orosomucoid suppression

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中国药理学与毒理学杂志 2017年第10期31卷 974-974页

作者： peng-yuan wang Xia LIU Department of Pharmacology School of PharmacySecond Military Medical University

Gender differences in fatigue,manifesting as female more prone to feel exhausted with lower muscle endurance,still remains unclear ***,we investigated whether orosomucoid,an endogenous anti-fatigue protein which can enhance muscle endurance,is involved in this *** rats showed lower muscle endurance,and this gender difference was disappeared in orosomucoid 1-deficient *** rats also displayed weaker orosomucoid induction in serum,liver and muscle in response to fatigue when compared to male *** in female rats results in elevated orosomucoid level and increased swimming time which was reversed by estrogen replenishment,while exogenous estrogen treatment both in male or female mice produced opposite *** vitro C2C12 muscle and Chang liver cells,estrogen decreased orosomucoid expression and its promoter activity,and this effect was abolished when estrogen receptor or MAPK was ***,estrogen negatively regulates orosomucoid expression,which is responsible for the weaker muscle endurance in females.

关键词： estrogen MAPK orosomucoid

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利用到时差分布图方法进行近场地表震源定位

地球物理学报 2017年第8期60卷 3119-3132页

作者：史鹏程王元游庆瑜中国科学院地质与地球物理研究所油气资源研究重点实验室北京100029 中国科学院大学北京100049

近场震源的高精度定位在工程建设与军事应用等方面意义重大且应用广泛,如炮弹落点定位或车辆追踪等.定位过程面临速度结构未知、高分辨率要求等问题,传统的震源定位方法有一定的局限性.本文将超声波检测中的时差分布图(Delta T Mapping... 详细信息

近场震源的高精度定位在工程建设与军事应用等方面意义重大且应用广泛,如炮弹落点定位或车辆追踪等.定位过程面临速度结构未知、高分辨率要求等问题,传统的震源定位方法有一定的局限性.本文将超声波检测中的时差分布图(Delta T Mapping,简称DTM)方法首次成功引入近场震源定位问题中.DTM定位法首先建立一个测区的到时差模型,然后基于此模型对新的震源进行定位.有两种建立模型的方法,(1)网格搜索法:对原有模型进行线性插值,得到更高分辨率的到时差分布模型;(2)统计定位法:利用高斯过程回归建立到时差数据与位置坐标之间的映射关系.本文在北京某郊区进行了炸点定位实验,在140 m×90 m的测试区域内,定位误差为0.5~5.1 m.结果表明,DTM方法是一种可靠、高精度、具有近实时性的近场震源定位方法.进一步利用接收点、源点互换,在获得高精度DTM同时,可大幅降低标定与数据分析成本.结合震源扫描法具有解决多目标定位问题的潜力.

关键词：震源定位到时差时差分布图法高斯过程回归震源扫描法