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小隔板试验冲击起爆和熄灭流场的实验与Lagrange分析

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爆炸与冲击 2005年第5期25卷 472-476页

作者：蒋国平浣石广州大学工程抗震中心广东广州510405

根据小隔板试验的拉氏传感器测试结果,用拉氏分析方法求得了粗颗粒包复TNT炸药中的冲击波成长过程和熄灭过程的流场分布,用实验结果确定了点火增长模型中的待定参数。利用拉氏分析方法时,对未反应炸药和已反应产物的状态方程都采用JWL... 详细信息

根据小隔板试验的拉氏传感器测试结果,用拉氏分析方法求得了粗颗粒包复TNT炸药中的冲击波成长过程和熄灭过程的流场分布,用实验结果确定了点火增长模型中的待定参数。利用拉氏分析方法时,对未反应炸药和已反应产物的状态方程都采用JWL状态方程,使确定的参数可以直接用于有限元程序LSDY-AN计算。通过拉氏分析得到了各迹线上的反应度,结果表明,冲击波在熄灭过程中仍能引起炸药的局部化学反应。

关键词：爆炸力学反应度冲击起爆炸药

Amide naphthotubes:Biomimetic macrocycles for selective molecular recognition

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Chinese Chemical Letters 2024年第4期35卷 124-131页

作者： Cheng-Da Zhao huan Yao shi-Yao Li Fangfang Du Li-Li Wang Liu-Pan Yang School of Pharmaceutical Science Postdoctoral Research Station of Basic MedicineHengyang Medical SchoolUniversity of South ChinaHengyang 421001China

Selective molecular recognition in water is routine for bioreceptors,but remains challenging for synthetic *** is principally because noncovalent interactions are usually less efficient in aqueous *** mimicking the cavity feature of bioreceptors,*** Jiang proposed and clarified the concept of“endo-functionalized cavity”.Through situating polar binding sites into a deep hydrophobic cavity,we designed and synthesized several macrocyclic hosts,among which amide naphthotubes are the most *** hosts can selectively recognize various polar molecules including organic micropollutants,drug molecules,and chiral molecules in water by employing the hydrophobic effect and shielded hydrogen *** addition,these biomimetic hosts have been applied in spectroscopic analysis,adsorptive separation and *** this review,we provide an overview of recent advances on amide naphthotubes with special emphasis on the efforts of Jiang's *** are convinced that these biomimetic macrocycles will make further contributions to supramolecular chemistry and beyond.

关键词： Molecular recognition Supramolecular chemistry Amide naphthotube Endo-functionalized cavity Biomimetic macrocycle

A TWO-DIMENSIONAL LAGRANGIAN TECHNIQUE FOR FLOW FIELD MEASUREMENT UNDER HIGH DYNAMIC PRESSURE

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Acta Mechanica Sinica 1990年第2期6卷 188-192页

作者： huan shi (Dept.of Applied Physics Changsha Institute of Technology)Ding Jing (Dept.of Engineering Mechanics Beijing Institute of Technology) Dept. of Applied Physics Changsha Institute of Technology Changsha China Dept. of Engineering Mechanics Beijing Institute of Technology Beijing China

In this paper,a two-dimensional(2-D)Lagrangian technique for flow field measurement under high dynamic pressure is presented,which includes a set of experimental device and 2-D Lagrange composite manganin-constantan ring *** this kind of gage,the histories of pressure and radial displacement can be measured simultaneously at different Lagrange positions in an axisymmetric shock loading flow field. The technique has some advantages over the 1-D one,such as,simplified loading device,continuously adjust- able output pressure,no restriction on sample length and the availability for the study of lateral rarefaction in shock *** a preliminary application,the processes of 2-D shock initiation and attenuation in compacted TNT are measured.

关键词： Lagrange gage 2-D measurement shock initiation high velocity impact

药西瓜,还是罂粟?——阿卡德语医药文献中的úÚKUŠ.GÍL(irru)

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中央民族大学学报（哲学社会科学版） 2023年第1期50卷 46-61页

作者：石欢北京大学外国语学院西亚系北京100871

罂粟是一种古老的药用植物。古代美索不达米亚地区出土的楔形文字泥版记载了植物úÚKUŠ.GÍL(irru)的使用情况,以苏美尔语、阿卡德语楔形文字书写的相关医学文献共有15篇,包括***系列植物学文献、治疗头痛的泥版、治疗消化系统疾病的... 详细信息

罂粟是一种古老的药用植物。古代美索不达米亚地区出土的楔形文字泥版记载了植物úÚKUŠ.GÍL(irru)的使用情况,以苏美尔语、阿卡德语楔形文字书写的相关医学文献共有15篇,包括***系列植物学文献、治疗头痛的泥版、治疗消化系统疾病的泥版、怀孕和分娩的泥版。本文以***系列植物学文献为出发点,分别就泥版中所记载的植物特征、形态、使用部位、治疗功效和毒副作用进行梳理、辨析和讨论。借助植物úÚKUŠ.GÍL(irru)的治疗效果,讨论得出植物úÚKUŠ.GÍL(irru)是罂粟。

关键词：罂粟楔形文字医学泥版古代美索不达米亚古代两河流域医学

Approximation to NLAR(p) with Wavelet Neural Networks

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Chinese Quarterly Journal of Mathematics 2002年第4期17卷 94-98页

作者：朱石焕吴曦安阳师范学院数学系河南安阳455000 西北工业大学数学与信息科学系陕西西安710072

Recently, wavelet neural networks have become a popular tool for non-linear functional approximation. Wavelet neural networks, which basis functions are orthonormal scalling functions, are more suitable in approximati... 详细信息

关键词： wavelet neural networks orthonormal scaling functions NLAR(p)

Carbon cathode with heteroatom doping and ultrahigh surface area enabling enhanced capacitive behavior for potassium-ion hybrid capacitors

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Rare Metals 2024年第5期43卷 2136-2149页

作者： Yan Xiong Ya-Fei Zhang Chun-Liu Zhu Lei Yang huan-Yu Liang Jing shi Jing-Wei Chen Wei-QianTian Shuai Liu Zhi Li Jing-Yi Wu huan-Lei Wang School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Department of Chemical and Materials Engineering University of AlbertaEdmontonAB T6G 2V4Canada

Potassium-ion hybrid capacitors(PIHCs)are widely regarded as highly promising energy storage devices,due to their exceptional energy density,impressive power density,and abundant potassium ***,restricted by the inherent capacitive storage mechanism,the carbon cathodes possess a much lower specific capacity than battery-type ***,designing high-performance carbon cathodes is extremely urgent for the development of ***,N,O codoped porous carbon(NOPC)was fabricated through the NaCl hard template method and combined KOH/melamine chemical activation technique,displaying the characteristics of abundant N/O content(4.7 at%/16.9 at%),ultrahigh specific surface area(3092 m^(2)g^(-1))and hierarchical pore *** designed NOPC cathode delivers a high specific capacity(164.4 mAh.g^(-1)at 0.05 A.g^(-1))and superior cyclability(95.1%retention ratio at 2 A·g^(-1)over 2500 cycles).Notably,the adjustable ratio of micropores to mesopores facilitates the achievement of the optimal bal-ance between capacity and rate ***,the pseudocapacitance can be further augmented through the incorporation of N/O functional *** expected,the graphite//NOPC based PIHC possesses a high energy density of 113 Wh·kg-at 747 W·kg^(-1)and excellent capacity retention of 84.4% fter 400 cycles at 1.0 A·g^(-1).This work introduces a novel strategy for designing carbon cathodes that enhances the electrochemical performance of PIHCs.

关键词： Template method N/O co-doping High specific surface area Carbon cathode Potassium-ion capacitors

Study on Evacuation Safety Rate of Emergency Exits in Railway Tunnel Fire Mode

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Study on Evacuation Safety Rate of Emergency Exits in Railwa...

Incidence of Pleural Effusion in Patients with Pulmonary Embolism

作者： Qi Li huan shi Chang Yang College of Architecture and Urban-Rural Planning Sichuan Agricultural University

Emergency exit is the most common form of engineering structure in railway tunnel disaster prevention and rescue *** order to clarify the safety guarantee rate of personnel evacuation through emergency exit after fire in railway tunnel,with the help of fire dynamics simulation（FDS） and building-EXODUS,this paper has established the fire combustion model and personnel evacuation model of the 25-type passenger trains in the 3 D ***,combined with the personnel safety evacuation criteria,the safety probability of evacuation of personnel in different scenarios at the emergency exit of the railway tunnel fire mode is *** conclusion shows that the larger the width of the running surface,the smaller the total number of evacuation,the higher the evacuation safety *** evacuation person number is 2145（the hard seat is overloaded 60%）,and the width of the running surface is increased from 1.5 m（standardized value） to 3.5 m,the evacuation safety rate increased from 86.4% to 87.7%.The width of the running surface was 1.5 m,and the number of evacuation person was 1531（not overloaded）,the evacuation safety rate reached 100%.Therefore,for the 25-type passenger train,if the personnel are not overloaded,they can choose to evacuate the fire at the emergency exit.

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Chinese Medical Journal 2015年第8期128卷 1032-1036页

作者： Min Liu Ai Cui Zhen-Guo Zhai Xiao-Juan Guo Man Li Lei-Lei Teng Li-Li Xu Xiao-Juan Wang Zhen Wang huan-Zhong shi Department of Radiology Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China Department of Respiratory and Critical Care Medicine Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China

Background： No data on the incidence ofpleural effusion （PE） in Chinese patients with pulmonary embolism are available to date. The aim of the current study was to investigate the frequency of PE in a Chinese population of patients with pulmonary embolism. Methods： This was a retrospective observational single-center study. All data of computed tomography pulmonary angiography （CTPA） performed over 6-year period on adult patients with clinically suspected pulmonary embolism were analyzed. Results： From January 2008 until December 2013, PE was identified in 423 of 3141 patients （13.5%） with clinically suspected pulmonary embolism who underwent CTPA, The incidence of PE in patients with pulmonary embolism （19.9%） was significantly higher than in those without embolism （9.4%）（P 〈 0.001 ）. Majority of PEs in pulmonary embolism patients were small to moderate and were unilateral. The locations of emboli and the numbers of arteries involved, CT pulmonary obstruction index, and parenchymal abnormalities at CT were not associated with the development of PE, Conclusions： PEs are present in about one fifth of a Chinese population of patients with pulmonary embolism, which are usually small, unilateral, and unsuitable for diagnostic thoracentesis.

关键词： Computed Tomography Pulmonary Angiography Pleural Effusion Pulmonary Embolism

Ultra-highly selective recognition of nucleosides over nucleotides by rational modification of tetralactam macrocycle and its application in enzyme assay

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Chinese Chemical Letters 2024年第6期35卷 274-278页

作者： huan Yao Jian Qin Yan-Fang Wang Song-Meng Wang Liu-huan Yi shi-Yao Li Fangfang Du Liu-Pan Yang Li-Li Wang School of Pharmaceutical Science Postdoctoral Research Station of Basic MedicineHengyang Medical SchoolUniversity of South ChinaHengyang 421001China Department of Chemistry Southern University of Science and TechnologyShenzhen 518055China

Artificial macrocycle with high binding selectivity in water is often challenging but urgently needed in various research and application ***,we report a new water-soluble biomimetic tetralactam macrocycle and realize the ultra-high selectivity to nucleosides over corresponding monophosphate nucleotides by rational *** introduction of charged groups at the periphery of endofunctionalized cavity makes the selectivity(guanosine to guanosine 5-monophosphate)increase remarkably from 100 to *** on the ultra-high selectivity of biomimetic tetralactam macrocycle,the sensitive CD73 enzyme activity assay was then achieved through product-selective fluorescence indicator displacement ***,the capability of the proposed method for inhibitor screening was successfully displayed.

关键词： Rational modification Biomimetic macrocycle Ultra-high selectivity Enzyme assay