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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 | U-shaped association between telomere length and esophageal squamous cell carcinoma risk: a case-control study in Chinese population显示文摘在由维持 chromosomal 正直并且阻止染色体的生物变老的一个关键角色结束的 Telomeres 玩熔化。流行病学的研究建议了 telomere 长度的内部个人的差别能影响倾向到多重癌症,但是关于食道的有鳞的房间癌(ESCC ) 的证据仍然是不明确的。几 telomere 在白种人的长度相关的单个核苷酸多型性(TLSNP ) 在染色体宽的协会研究被报导了。然而,在 ESCC 开发的 telomere 长度和 TL-SNPs 的效果是不清楚的。因此,我们进行了盒子控制研究(1045 个 ESCC 案例和 1433 控制) 在中国人口评估在 telomere 长度, TL-SNPs,和 ESCC 风险之间的协会。作为结果, ESCC 案例显示出全面更短的相对 telomere 长度(RTL )( 中部:1.34 ) 比控制(中部:1.50, P < 0.001 ) 。更有趣地,一个明显的非线性的U字形的协会在 RTL 和 ESCC 风险之间被观察( P < 0.001 )与比率(95%信心间隔)等于到 2.40 的机会( 1.843.14 ), 1.36 ( 1.031.79 ), 1.01 ( 0.761.35 ),并且 1.37 ( 1.031.82 )为个人在第一(最短),第二,第三,并且 第5 (最长) quintile 分别地,在是的 第4 quintile 与那些相比引用组。没有重要协会在八报导 TL-SNPs 和 ESCC 危险性之间被观察。这些调查结果建议短或极其长的 telomeres 可以是为在中国人口的 ESCC 的风险因素。 | Jiangbo Du Wenjie Xue Yong Ji Xun Zhu Yayun Gu Meng Zhu Cheng Wang Yong Gao Juncheng Dai Hongxia Ma Yue Jiang Jiaping Chen Zhibin Hu Guangfu Jin Hongbing Shen | 2015 | Frontiers of Medicine2015，9，4： | 4 |
| 3 | Compensation Control and Parameters Design for High Frequency Resonance Suppression of MMC-HVDC System显示文摘Large time delay is one of the inherent features of a modular multilevel converter(MMC)-based high voltage direct current(HVDC)system and is the main factor leading to the unfavorable’negative resistance and inductance’characteristic of MMC impedance.Research indicates that this characteristic interacting with the capacitive characteristics of an AC system is the cause of high frequency resonance(HFR)in the Yu-E HVDC project.As the current controller is one of the main factors that affects the MMC impedance,a compensation control to imitate the paralleled impedance at the point of common coupling(PCC)is proposed.Therefore,the structure and parameter design of the compensation controller are core to realizing HFR suppression.There are two potentially risky frequency ranges of HFRs(around 700 Hz and 1.8 kHz)in the studied AC system within 2.0 kHz.The core concept of HFR suppression is to make the phase angle of MMC impedance smaller than 90◦in the two risky frequency ranges according to impedance stability theory.Hence,the design parameters aim to coordinate the phase angle of MMC impedance in the two risky frequency ranges.In this paper,three types of compensation controller are studied to suppress HFRs,namely,first-order low pass filter(LPF),second-order LPF,and third-order band pass filter.The results of parameter design show that the first-order LPF cannot suppress both HFRs simultaneously.The second-order LPF can suppress both HFRs,however,it introduces a DC component into the current control loop.Therefore,a high pass filter is added to form the recommended third-order controller.All parameter ranges of the compensation controller are derived using analytical expressions.Finally,the correctness of the parameter design is proofed using time-domain simulations. | Yunfeng Li Hui Pang Ming Kong Jingjing Lu Ke Ji Guangfu Tang | 2021 | CSEE Journal of Power and Energy Systems2021，7，6： | 3 |
| 4 | 本校近期发表IF≥4.0的SCI论文摘要(英文)——Genetic Variants on Chromosome 15q25 Associated with Lung Cancer Risk in Chinese Populations显示文摘 | Hu Zhibin Jin Guangfu Liang Jie Zhang Mingfeng Shen Hongbing Wu Chen Yu Dianke Huang Liming Tan Wen Lin Dongxin Guo Huan Wu Tangchun Qian Ji Lu Daru | 2009 | 南京医科大学学报(自然科学版)2009，29，9： | 1 |
| 5 | Nonsynonymous polymorphisms in FAT4 gene are associated with the risk of esophageal cancer in an Eastern Chinese population显示文摘 | Jiangbo Du Jian Ji Yong Gao Lin Xu Jing Xu Chen Zhu Haiyong Gu Jie Jiang Huizhang Li Hongxia Ma Zhibin Hu Guangfu Jin Wei Guo Xiaofei Chen Hongbing Shen | 2013 | Int J Cancer2013，，2： | 1 |
| 6 | Nonsynonymous polymorphisms in FAT4 gene are associated with the risk of esophageal cancer in an Eastern Chinese population显示文摘 | Jiangbo Du Jian Ji Yong Gao Lin Xu Jing Xu Chen Zhu Haiyong Gu Jie Jiang Huizhang Li Hongxia Ma Zhibin Hu Guangfu Jin Wei Guo Xiaofei Chen Hongbing Shen | 2013 | Cancer2013，，2： | 1 |
| 7 | Impedance Analysis Considering Unstable Subsystem Poles for MMC-HVDC-based Wind Farm Integration System显示文摘Employing the AC/DC impedance analysis method,extensive research has been conducted on issues pertaining to harmonic resonance observed in wind farm-connected MMCHVDC systems over the past 5 years.In general,this method divides the studied system into two subsystems at AC and DC sections.Subsequently,the impedance produced by these subsystems can be used to determine the system stability by implementing Nyquist criterion or generalized Nyquist stability criterion.However,the existing impedance analysis methods usually assume the subsystems to be stable and disregard certain special cases with potentially unstable subsystems,where the unstable poles of these subsystems must be evaluated before applying Nyquist criterion.In view of this consideration,a simplified method for identifying unstable subsystem poles is presented in this paper.Hence,the shortcoming of existing impedance analyses is rectified by considering the unstable subsystem poles.The proposed method and the stability analyses are validated by the electromagnetic transient simulation performed in PSCAD/EMTDC. | Ke Ji Hui Pang Shan Liu Guangfu Tang | 2022 | CSEE Journal of Power and Energy Systems2022，8，2： | 1 |
| 8 | Periodic DFT approaches to crystalline alkali metal azides显示文摘The energy bands, electronic structures and relationship between structures and properties of the crystalline alkali metal azides, LiN3, α-NaN3 and KN3, are investigated at the DFT-B3LYP level. The crystalline bulks are predicted to be insulator, speculated from their band gaps of ca. 0.23-0.25 a.u. and from their level frontier bands. The atomic overlaps and electron densities show that the metals and the azides are combined by ionic bonds. The crystal lattice energies, being corrected for the basis set superposition errors, are -852.30, -771.45 and - 614.78 kJ·mol-1 for LiN3, a-NaN3 and KN3 respectively. These values are similar to those by Gray’s approximate method. The frontier crystal orbital mainly consists of the atomic orbital of the terminal nitrogen of azides. The contribution of the metallic orbital to the LUMO is very small. The electron transition from the HOMO to the LUMO is difficult to occur. Hence all the alkali metal azides are expected to be insensitive explosives, according to the ' | Xuehai Ju Heming Xiao Guangfu Ji | 2002 | Chinese Science Bulletin2002，47，14： | 1 |
| 9 | Elastic, superconducting and thermodynamic properties of the cubic metallic phase of AIH3 via first-principles calculations显示文摘 | Wei Yongkai Ge NiNa Ji Guangfu | 2013 | JAppl Phys2013，114，11： | 1 |
| 10 | Pressure induced metallization of SiH4(H2)2 via first principle calculations显示文摘 | Wei Yongkai Ge NiNa Ji Guangfu | 2014 | Comp Mater Sci2014，88，： | 1 |
| 11 | A New Discovery of Colobodus Agassiz, 1844(Colobodontidae) from the Carnian(Upper Triassic) of Guizhou, South China显示文摘Objective Critical review of the Colobodontidae reveals that this family has important research value.Colobodontidae was universally accepted as a significant taxon among all Triassic ichthyolite in 2002.However,most colobodontids are probably confined to the Anisian and Ladinian in the western Tethys(Mutter,2004).This work describes a well-preserved colobodontid discovered in Guizhou,South China. | LI Ji LUO Yongming WANG Yue XU Guangfu MA Zhiheng | 2019 | Acta Geologica Sinica(English Edition)2019，93，6： | 0 |
| 12 | High Frequency Stability Constraints Based MMC Controller Design Using NSGA-III Algorithm显示文摘The occurrence of high frequency resonances(HFRs)has been frequently observed in several MMC-HVDC projects.To avoid these HFRs,the controller design of an MMC must satisfy two requirements:1)The controller should remain stable while in the high frequency range,and 2)MMC impedance should not possess a negative real part in the high frequency range.So far,majority of the related studies on MMC controller design have been unable to address these requirements precisely.This paper first describes the simplified high frequency MMC impedance model developed indigenously by the authors.Subsequently,the driving mechanism of two kinds of HFRs is revealed using the said developed model,including:1)MMC controller instability,and 2)Interaction instability between MMC and AC cables.Furthermore,the mathematical expressions outlining the controller stability constraint and positive damping constraint are proposed.Additionally,NSGA-III based multi-objective optimization algorithm is adopted,to identify the region most suitable for satisfying the proposed stability constraints under the MMC controller parameters.The proposed controller design method is capable of effectively evading the HFRs triggered by the incompatible MMC.The detailed time-domain simulations generated using PSCAD/EMTDC software validate the proposed designed method and endorse the improved results. | Ke Ji Weiming Chen Xueguang Wu Hui Pang Jingxuan Hu Shan Liu Fan Cheng Guangfu Tang | 2023 | CSEE Journal of Power and Energy Systems2023，9，2： | 0 |
| 13 | Thermodynamic and Optical Properties of CuAlO_2 under Pressure from First Principle显示文摘The structural stability, thermodynamic and optical properties of delafossite CuAlO_2 were investigated using the norm-conserving pseudopotential technique based on the fi rst-principle density-functional theory. The ground-state properties obtained by minimizing the total energy were in favorable agreement with previous works. By using the quasi-harmonic Debye model, the thermodynamic properties including the Debye temperature Q_D, heat capacity C_V, thermal expansion coeffi cient a, and Grüneisen parameter g were successfully obtained in the temperature range from 0 to 1 000 K and pressure range from 0 to 80 GPa, respectively. The optical properties including dielectric function e(v), absorption coeffi cient a(v), refl ectivity coeffi cient R(v), and refractive index n(v) were also calculated and analyzed. | 张丽琴 程艳 JI Guangfu | 2015 | Journal of Wuhan University of Technology(Materials Science)2015，30，6： | 0 |
| 14 | Oxidation State as a Descriptor in Oxygen Reduction Electrocatalysis显示文摘Electrocatalysts for the oxygen reduction reaction(ORR)are critically important in the development of fuel cells and metal-air batteries.Intensive research interests have been devoted to improving the electrocatalytic performance by tuning the morphology and defect-active sites.Herein,we demonstrate that the oxidation state can also serve as an effective strategy for designingORR electrocatalysts.Valencemodels of silver with gradient chemical valence from zero valence to trivalence were successfully built.Their oxidation states were evaluated by cryo-X-ray photoelectron spectroscopy,X-ray absorptionfinestructure,and electron paramagnetic resonance spectroscopy.For the first time,our results demonstrated that the electrocatalytic activities of silver species can be improved by increasing their valence,conforming the orderofAg | Ning Qin Sicen Yu Zongwei Ji Yanfang Wang Yingzhi Li Shuai Gu Qingmeng Gan Zhenyu Wang Zhiqiang Li Guangfu Luo Kaili Zhang Zhouguang Lu | 2022 | CCS Chemistry2022，4，11： | 0 |
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