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| 1 | Molecular dynamics study on the relationships of modeling,structural and energy properties with sensitivity for RDX-based PBXs显示文摘In this paper,a primary model is established for MD(molecular dynamics) simulation for the PBXs(polymer-bonded explosives) with RDX(cyclotrimethylene trinitramine) as base explosive and PS as polymer binder.A series of results from the MD simulation are compared between two PBX models,which are represented by PBX1 and PBX2,respectively,including one PS molecular chain having 46 repeating units and two PS molecular chains with each having 23 repeating units.It has been found that their structural,interaction energy and mechanical properties are basically consistent between the two models.A systematic MD study for the PBX2 is performed under NPT conditions at five different temperatures,i.e.,195 K,245 K,295 K,345 K,and 395 K.We have found that with the temperature increase,the maximum bond length(L max) of RDX N N trigger bond increases,and the interaction energy(E N-N) between two N atoms of the N-N trigger bond and the cohesive energy density(CED) decrease.These phenomena agree with the experimental fact that the PBX becomes more sensitive as the temperature increases.Therefore,we propose to use the maximum bond length L max of the trigger bond of the easily decomposed and exploded component and the interaction energy E N-N of the two relevant atoms as theoretical criteria to judge or predict the relative degree of heat and impact sensitivity for the energetic composites such as PBXs and solid propellants. | XIAO JiJun ZHAO Li ZHU Wei CHEN Jun JI GuangFu ZHAO Feng WU Qiang XIAO HeMing | 2012 | Science China Chemistry2012，55，12： | 12 |
| 2 | The characteristic and evolution of coal-forming swamp in Hanshuiquan district,Santanghu Coalfield, Xinjiang,NW China,during the Middle Jurassic: evidence from coal petrography,coal facies and sporopollen显示文摘Santanghu Coalfield is the largest integrated coalfield exploration area in China. The major coal seams developing in Xishanyao Formation (Middle Jurassic) are the high-quality steam coals characterized by large thickness, favorable horizontal continuity and high coal quality. In this paper, twenty-two samples were collected from the three typical boreholes in Hanshuiquan disirict, representing the 11 coal seam sequences (7#,8#,9#,13#, 14#,15#,17#,18#,19#,20#,22#), respectively. The petrographic characteristics of the coal-bearing sequence in Xishanyao Formation were firstly summarized systematicly, and then the coal-forming swamp characteristics and succession mechanism of the coal seam in Xishanyao Formation were defined by analyzing the samples. The maceral composition, structure, geochemical and geophysical characteristics of coal are in eluded in original genetic criteria of coal-forming swamp an alysis. And the composition of coal petrography, maceral and microlithotype are the most frequently used parameters. Coal is composed of microscopic constituents and inorganic substances. The Xishanyao Formation maceral mainly consists of vitrinite (65.74%-97.01 %), inert i nite (1.93%-34%), and the exinite shows the mode of regular change. The coal-forming swamp in Xishanyao Formation possesses the characteristics of mainly marsh, wet forest swamp facies, and shallow water covered forest swamp facies, and a few of coal seams distribute in the deep water covered forest swamp facies. In addition, the sporopollens in Xishanyao Formation are mainly Pinaceae evergreen broad leaf and needle-leaved plants. Osmundaceae, Cyatheaceae and Lygodiaceae, indicating that the warm and humid tropic-subtropical climate conductive to the persistent growth of coal-forming plants in the Middle Jurassic. The coal-forming swamp shows the characteristics of vertically upward fluctuation through the periodic transition. It indicates a shallow-deep-shallow change process of the water covered depth in the swamp. This is the prin ci pal factor for the formation of the high-quality and continuous coal seam in Hanshuiquan district, Santanghu Coalfield. | Shuo Feng Jing He Jijun Tian Xingyu Lu Bo Yang | 2019 | International Journal of Coal Science & Technology2019，6，1： | 8 |
| 3 | A Multivariate Public Key Cryptographic Scheme显示文摘This paper presents a multivariate public key cryptographic scheme over a finite field with odd prime characteristic.The idea of embedding and layering is manifested in its construction.The security of the scheme is analyzed in detail,and this paper indicates that the scheme can withstand the up to date differential cryptanalysis.We give heuristic arguments to show that this scheme resists all known attacks. | YUAN Feng SUN Ying JIANG Jijun ZHAO Shangwei XU Shengwei | 2014 | China Communications2014，11，12： | 5 |
| 4 | DID Code:A Bridge Connecting the Materials Genome Engineering Database w让h Inheritable Integrated Intelligent Manufacturing显示文摘A data identifier(DID)is an essential tag or label in all kinds of databases—particularly those related to integrated computational materials engineering(ICME),inheritable integrated intelligent manufacturing(I3M),and the Industrial Internet ofThings.With the guidance and quick acceleration of the developme nt of advanced materials,as envisioned by official documents worldwide,more investigations are required to construct relative numerical standards for material informatics.This work proposes a universal DID format consisting of a set of build chains,which aligns with the classical form of identifier in both international and national standards,such as ISO/IEC 29168-1:2000,GB/T 27766-2011,GA/T 543.2-2011,GM/T 0006-2012,GJB 7365-2011,SL 325-2014,SL 607-201&WS 363.2-2011,and QX/T 39-2005.Each build chain is made up of capital letters and numbers,with no symbols.Moreover,the total length of each build chain is not restricted,which follows the formation of the Universal Coded Character Set in the international standard of ISO/IEC 10646.Based on these rules,the proposed DID is flexible and convenient for extendi ng and sharing in and between various cloud-based platforms.Accordingly,classical two-dimensional(2D)codes,including the Hanxin Code,Lots Perception Matrix(LP)Code,Quick Response(Q.R)code,Grid Matrix(GM)code,and Data Matrix(DM)Code,can be constructed and precisely recognized and/or decoded by either smart phones or specific machines.By utilizing these 2D codes as the fingerprints of a set of data linked with cloud-based platforms,progress and updates in the composition-processing-structure-property-performance workflow process can be tracked spontaneously,paving a path to accelerate the discovery and manufacture of advanced materials and enhance research productivity,performance,and collaboration. | William Yi Wang Peixuan Li Deye Lin Bin Tang Jun Wang Quanmei Guan Qian Ye Haixing Dai Jun Gao Xiaoli Fan Hongchao Kou Haifeng Song Feng Zhou Jijun Ma Zi-Kui Liu Jinshan Li Weimin Liu | 2020 | Engineering2020，6，6： | 4 |
| 5 | Laser-generated thermoelastic acoustic sources and acoustic waves in anisotropic plate显示文摘The effect of anisotropy on the ultrasound wave generation and propagation in the unidirectional fi- ber-reinforced composite plate has been investigated. A quantitative numerical model for the la- ser-generated ultrasound in the thermoelastic regime was presented by using a finite element method. All factors, such as spatial and time distributions of the incident laser beam, optical penetration, ther- mal diffusivity, and source-receiver distance can be taken into account. Numerical results show that the effect on ultrasound waveform of the size of the laser volume source produces strong bipolar longitu- dinal waves and improves the amplitude and directivity of the longitudinal waves. A fiber-reinforced composite material exhibits isotropic or homogenous behavior for ultrasonic wave propagation per- pendicular to the fiber direction. For ultrasonic propagation along the fiber direction, ultrasonic dis- persion resulting from the inhomogeneous nature of the material affects the laser ultrasonic waveforms. As the dimensions of the laser pulse are increased in space and time, the displacement waveform be- comes broader and its magnitude decreases. | XU BaiQiang WANG Feng FENG Jun WANG JiJun SUN HongXiang LUO Ying | 2009 | Science China(Technological Sciences)2009，52，3： | 3 |
| 6 | Noninvasive identificational diagnosis of diabetic nephropathy and non-diabetic renal disease based on clinical characteristics of Traditional Chinese Medicine symptom pattern and conventional medicine显示文摘OBJECTIVE:To study the clinical characteristics relating to differential diagnosis of diabetic nephropathy(DN) and non-diabetic renal disease(NDRD).METHODS:The subjects were patients with type 2 diabetes mellitus(T2DM) complicated with chronic kidney disease(CKD).Western medical history data and Traditional Chinese Medicine(TCM) symptom pattern were collected,and logistic regression was used to analyze.RESULTS:Blood deficiency pattern [odds ratio(OR) = 2.269,P = 0.017] and Qi stagnation pattern(OR = 1.999,P = 0.041) are independently related to DN.CONCLUSIONS:TCM factors blood deficiency pattern and Qi stagnation pattern are relating to differential diagnosis of DN and NDRD. | QU Yilun CHENG Haimei WANG Qian LI Shuang DUAN Shuwei FENG Zhe LI Weizhen JIANG Shuangshuang YANG Hongtao MAO Yonghui GENG Yanqiu LI Jijun LIU Yuning TIAN Jinzhou LIU Hongfang DONG Zheyi CHEN Xiangmei | 2023 | Journal of Traditional Chinese Medicine2023，43，3： | 1 |
| 7 | Late Quaternary monsoon patters on the Loess Plateau of China显示文摘 | Li Jijun Feng Zhaodong Tang Lingyu | 1988 | Earth Surface Processes and Land forms1988，13，： | 1 |
| 8 | Morphologies of long chain branched isotactic polypropylene crystallized from melt显示文摘 | Wei Zeng Jijun Wang Zoujun Feng Jin-Yong Dong Shouke Yan | 2005 | Colloid and Polymer Science2005，，3： | 1 |
| 9 | Intensity image denoising for laser active imaging system u- sing nonsubsampled contourlet transform and SURE ap- proach 显示文摘 | Xiao feng Li Jun Xu Jijun Luo Lijia Cao Shengxiu Zhang | 2012 | Optik-International Journal for Light and Elec- tron Optics2012，9，123： | 1 |
| 10 | Reinforcing and toughening effects of bamboo pulp fiber on poly (3-hydroxybutyrate-co-3-hydroxyvaIerate) fiber composites 显示文摘 | Jiang Long Chen Feng Qian Jun Huang Jijun Wolcott M Liu Linshu Zhang Jinwen | 2009 | Industrial & Engineering Chemistry Research2009，49，2： | 1 |
| 11 | Understanding Miocene Climate Evolution in Northeastern Tibet: Stable Carbon and Oxygen Isotope Records from the Western Tianshui Basin, China显示文摘To investigate climate evolution during the Miocene, especially during the Middle Miocene climate transition on the northeastern Tibetan Plateau, stable oxygen and carbon isotopes of carbonates from a 288-m-thick lacustrine-fluvial sediment sequence covering the period from 17.1 to 6.1 Ma from Tianshui Basin, China, were analyzed. The relatively low stable oxygen isotope values indicate the prevalence of wet climate conditions during the period of 17.1–13.6 Ma, an interval corresponding to the well-known Middle Miocene Climate Optimum. The interval between 13.6 and 11.0 Ma(i.e., the late Middle Miocene) is marked by a progressive increase in the δ18O values, indicative of a decrease in precipitation, probably linked to the expansion of the East Antarctic Ice Sheet and global cooling since about 14 Ma. The climate in the study area continued to get drier as shown by the enrichment of the heavy oxygen isotope from 11 Ma. We attribute these stepwise climatic changes as revealed by our carbonate δ18O record from the northeastern Tibetan Plateau to the sustained global cooling that may have reduced moist transport to Central Asia, which in turn led to a permanent aridification. | Zhanfang Hou Jijun Li Chunhui Song Jun Zhang Zhengchuang Hui Shiyue Chen Feng Xian | 2014 | Journal of Earth Science2014，25，2： | 1 |
| 12 | Laser-generated thermoelastic acoustic sources and Lamb waves in anisotropic plates显示文摘 | Baiqiang Xu Jun Feng Guidong Xu Jijun Wang Hongxiang Sun Guorong Cao | 2008 | Applied Physics A2008，，1： | 1 |
| 13 | Stability and rate capability of AI substituted lithium-rich high- manganese content oxide materials for Li ion batteries 显示文摘 | Li Zheng Chernova N A Feng Jijun | 2012 | Journal of the Electrochemical Society2012，159，： | 1 |
| 14 | Curved carbon nanotubes: From unique geometries to novel properties and peculiar applications显示文摘 | Lizhao Liu Feng Liu Jijun Zhao | 2014 | Nano Research2014，7，5： | 1 |
| 15 | Three-channel receive-only RF coil for vertical-field MR-guided focused ultrasound surgery显示文摘 | Xin Xuegang Feng Yanqiu Han Jijun | 2010 | Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering2010，37，4： | 1 |
| 16 | Free-space beam shaping and steering based on a silicon optical phased array显示文摘In this study,we present a method for free-space beam shaping and steering based on a silicon optical phased array,which addresses the theoretical limitation of traditional bulk optics.We theoretically analyze the beam propagation properties with changes in the applied phase.Different beam profiles can be shaped by varying the phase combination,while a high-order quasi-Bessel beam can be generated with a cubic change to the phase modulation.The simulated results are validated further experimentally,and they match one another well.Beam steering can be achieved with a field of view as large as 140°,which has potential benefits for practical applications.The presented method is expected to have broad application prospects for optical communications,free-space optical interconnects,and light detection and ranging. | WENBO REN QINGQING LIANG JIJUN FENG HAIPENG LIU JIANHUA HU SHUO YUAN XINCHENG XIA WEI JIANG QIWEN ZHAN HEPING ZENG | 2023 | Photonics Research2023，11，12： | 0 |
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