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| 1 | Time-sensitivity of the Kaiser effect of acoustic emission in limestone and its application to measurements of in-situ stress显示文摘Measuring in-situ stress by using the Kaiser effect in rocks has such advantages as time- effi ciency, low cost and little limitation, but the precision of the method is dependent on rock properties and delay time of the measurement. In this paper, experiments on the Kaiser effect in limestones were performed, and it was found that the limestones had good ability to retain a memory of their recent stress history and high time-sensitivity. The longer the experiment was delayed from the extraction of the stone, the larger the Felicity ratio was. As the Felicity ratio approached 1, signifi cant Kaiser effect was observed. In-situ stress should be determined by the limestone measurements when the delay time was 40-120 days. Finally, the in-situ stress in a limestone formation could be successfully measured in practice. | Jin Yan Qi Zili Chen Mian Zhang Guangqing Xu Guangqiang | 2009 | Petroleum Science2009，6，2： | 15 |
| 2 | On the sub-mixed fractional Brownian motion显示文摘Let {SHt, t ≥ 0} be a linear combination of a Brownian motion and an independent sub-fractional Brownian motion with Hurst index 0 < H < 1. Its main properties are studied.They suggest that SHlies between the sub-fractional Brownian motion and the mixed fractional Brownian motion. We also determine the values of H for which SHis not a semi-martingale. | El-Nouty Charles Zili Mounir | 2015 | Applied Mathematics(A Journal of Chinese Universities)2015，30，1： | 9 |
| 3 | Tensile and Fracture Properties of 15 vol% SiC_p/2009Al Composites Fabricated by Hot Isostatic Pressing and Hot Extrusion Processes显示文摘15 vol% silicon carbide particle(Si Cp)-reinforced 2009 Al matrix(15 vol% Si Cp/2009Al) composites were fabricated by hot isostatic pressing(HIP) and hot extrusion processes. The tensile and fracture properties of 15 vol% Si Cp/2009 Al were studied. The results showed that hot extrusion increased the ultimate tensile strength(UTS), yield strength(YS), elongation(EL), reduction in area(RA), and fracture toughness of the composites. The heat treatment resulted in the increase in UTS, YS, and fracture toughness, but a decrease in EL and RA. Both hot extrusion and heat treatment had negligible effects on elastic modulus(E). With the increase of Si Cpsize, the UTS, YS, and E decreased, but the EL and RA increased. The fracture toughness increased first and then decreased with increasing Si Cpsize, and when the Si Cpsize was about 7 lm, the composites obtained the maximum fracture toughness value of 31.74 MPa m^(1/2). | Junhui Nie Jianzhong Fan Shaoming Zhang Shaohua Wei Tao Zuo Zili Ma Zhaobing Xiang | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，5： | 8 |
| 4 | Quantitative Geoscience and Geological Big Data Development: A Review显示文摘After long-term development, mathematical geology has today become an independent discipline. Big Data science, which has become a new scientific paradigm in the 21 st century, gives rise to the geological Big Data, i.e. mathematical geology and quantitative geoscience. Thanks to a robust macro strategy for big data, China's quantitative geoscience and geological big data's rapid development meets present requirements and has kept up with international levels. This paper presents China's decade-long achievements in quantitative prediction and assessment of mineral resources, geoscience information and software systems, geological information platform development, etc., with an emphasis on application of geological big data in informatics, quantitative mineral prediction, geological environment and disaster management, digital land survey, digital city, etc. Looking ahead, mathematical geology is moving towards 'Digital Geology', 'Digital Land' and 'Geological Cloud', eventually realizing China's grand 'Digital China' blueprint, and these valuable results will be showcased on the international academic arena. | CHEN Jianping XIANG Jie HU Qiao YANG Wei LAI Zili HU Bin WEI Wei | 2016 | Acta Geologica Sinica(English Edition)2016，90，4： | 8 |
| 5 | Under the surface:Pressure-induced planetary-scale waves,volcanic lightning,and gaseous clouds caused by the submarine eruption of Hunga Tonga-Hunga Ha'apai volcano显示文摘We present a narrative of the eruptive events culminating in the cataclysmic January 15, 2022 eruption of Hunga Tonga-Hunga Ha’apai Volcano by synthesizing diverse preliminary seismic, volcanological, sound wave, and lightning data available within the first few weeks after the eruption occurred. The first hour of eruptive activity produced fast-propagating tsunami waves, long-period seismic waves, loud audible sound waves, infrasonic waves, exceptionally intense volcanic lightning and an unsteady volcanic plume that transiently reached-at 58km-the Earth’s mesosphere. Energetic seismic signals were recorded worldwide and the globally stacked seismogram showed episodic seismic events within the most intense periods of phreatoplinian activity, and they correlated well with the infrasound pressure waveform recorded in Fiji. Gravity wave signals were strong enough to be observed over the entire planet in just the first few hours, with some circling the Earth multiple times subsequently. These large-amplitude, long-wavelength atmospheric disturbances come from the Earth’s atmosphere being forced by the magmatic mixture of tephra, melt and gasses emitted by the unsteady but quasicontinuous eruption from 0402±1–1800 UTC on January 15, 2022. Atmospheric forcing lasted much longer than rupturing from large earthquakes recorded on modern instruments, producing a type of shock wave that originated from the interaction between compressed air and ambient(wavy) sea surface. This scenario differs from conventional ideas of earthquake slip, landslides, or caldera collapse-generated tsunami waves because of the enormous(~1000x) volumetric change due to the supercritical nature of volatiles associated with the hot,volatile-rich phreatoplinian plume. The time series of plume altitude can be translated to volumetric discharge and mass flow rate. For an eruption duration of ~12 h, the eruptive volume and mass are estimated at 1.9 km^(3) and~2 900 Tg, respectively, corresponding to a VEI of 5–6 for this event. The high frequency and intensity of lightning was enhanced by the production of fine ash due to magma-seawater interaction with concomitant high charge per unit mass and the high pre-eruptive concentration of dissolved volatiles. Analysis of lightning flash frequencies provides a rapid metric for plume activity and eruption magnitude. Many aspects of this eruption await further investigation by multidisciplinary teams. It represents a unique opportunity for fundamental research regarding the complex, non-linear behavior of high energetic volcanic eruptions and attendant phenomena, with critical implications for hazard mitigation, volcano forecasting, and first-response efforts in future disasters. | David A.Yuen Melissa A.Scruggs Frank J.Spera Yingcai Zheng Hao Hu Stephen R.McNutt Glenn Thompson Kyle Mandli Barry R.Keller Songqiao Shawn Wei Zhigang Peng Zili Zhou Francesco Mulargia Yuichiro Tanioka | 2022 | Earthquake Research Advances2022，2，3： | 7 |
| 6 | Temperature dependence of the point defect properties of GaN thin films studied by terahertz time-domain spectroscopy显示文摘The dielectric functions of GaN for the temperature and frequency ranges of 10–300 K and 0.3–1 THz are obtained using terahertz time-domain spectroscopy.It is found that there are oscillations of the dielectric functions at various temperatures.Physically,the oscillation behavior is attributed to the resonance states of the point defects in the material.Furthermore,the dielectric functions are well fitted by the combination of the simple Drude model together with the classical damped oscillator model.According to the values of the fitting parameters,the concentration and electron lifetime of the point defects for various temperatures are determined,and the temperature dependences of them are in accordance with the previously reported result.Therefore,terahertz time-domain spectroscopy can be considered as a promising technique for investigating the relevant characteristics of the point defects in semiconductor materials. | FANG HeNan ZHANG Rong LIU Bin LI YeCao FU DeYi LI Yi XIE ZiLi ZHUANG Zhe ZHENG YouDou WU JingBo JIN BiaoBing CHEN Jian WU PeiHeng | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，11： | 6 |
| 7 | Enhanced photocatalytic activity by the construction of a TiO2/carbon nitride nanosheets heterostructure with high surface area via direct interracial assembly显示文摘与碳氮化物 nanosheets (CN-NSs ) 修改的 TiO 2 heterostructure 经由直接界面的集会策略被综合了。CN-NSs,有唯一的二维的结构,为支持 TiO 2 nanoparticles (NP ) 是有利的。CN-NSs 的表面上的 TiO 2 NP 的一致分散在他们的 nanojunctions 创造足够的界面的接触,被电子显微镜学分析证实。与另外的报导金属 oxide/CN composites 比较,有 TiO 2 nanoparticles 的 ultrathin CN-NSs 层的强壮的相互作用制止他们的重新叠,哪个导致 234.0 m 2 的一个大特定的表面区域吗? | Zili Xu Chuansheng Zhuang Zhijuan Zou Jingyu Wang Xiaochan Xu Tianyou Peng | 2017 | Nano Research2017，10，7： | 6 |
| 8 | Stabilization and trajectory tracking of autonomous airship's planar motion显示文摘The stabilization and trajectory tracking problems of autonomous airship’s planar motion are studied. By defining novel configuration error and velocity error, the dynamics of error systems are derived. By applying Lyapunov stability method, the state feedback control laws are designed and the close-loop error systems are proved to be uniformly asymptotically stable by Matrosov theorem. In particular, the controller does not need knowledge on system parameters in the case of set-point stabilization, which makes the controller robust with respect to parameter uncertainty. Numerical simulations illustrate the effectiveness of the controller designed. | Zhang Yan Qu Weidong Xi Yugeng Cai Zili | 2008 | Journal of Systems Engineering and Electronics2008，19，5： | 6 |
| 9 | Analysis of the ore-controlling structure of the Shihu gold deposit, Hebei Province and deep-seated ore-prospecting prediction显示文摘Under the guidance of the theory of mantle-branch structure-associated metallogenesis and on the basis of the geological characteristics, analysis of the ore-forming and ore-controlling structures, the geochemical characteristics of metallogenesis, the source of ore-forming materials, changes in the physical and chemical conditions of metallogenesis, changes in the vertical width of ore veins, and changes in gold grade of the Shihu gold deposit, the mechanism of its metallogenesis was discussed and the rules of vertical variation of ore veins were summarized in this study. It is pointed out that the orebodies under exploitation at present time should be in the middle and upper portions of gold veins in the Shihu gold mining district. Particularly on the basis of the characteristics of mantle-branch structure-associated metallogenesis, it is indicated that metallogenesis is controlled mainly by such ore-forming conditions as temperature and pressure. Deep-seated ore-forming fluids are characterized mainly by injection and precipitation. So the vein bodies in the adjacent metallogenic structures are of obvious comparability, and there would be great prospects for ore search both at depth and in the periphery of the Shihu gold deposit. Therefore, ore prospecting should be strengthened both at depth and in the peripheries. | NIU Shuyin WANG Baode SUN Aiqun CHEN Chao WANG Zili MA Baojun WANG Wenxue JIANG Xiaoping ZHAO Yongli GAO Yincang LIU Huabin QIU Jianping | 2009 | Chinese Journal Of Geochemistry2009，28，4： | 6 |
| 10 | Selective CO methanation over amorphous Ni-Ru-B/ZrO_2 catalyst for hydrogen-rich gas purification显示文摘Amorphous Ni-Ru-B/ZrO2 catalysts were prepared by chemical reduction method. The effects of Ni-Ru-B loading and Ru/Ni mole ratio on the catalytic performance for selective CO methanation from reformed fuel were studied, and the catalysts were characterized by BET, ICP, XRD and TPD. The results showed that Ru strongly affected the catalytic activity and selectivity by increasing the thermal stability of amorphous structure, promoting the dispersion of the catalyst particle, and intensifying the CO adsorption. For the catalysts with Ru/Ni mole ratio under 0.15, the CO methanation conversion and selectivity increased significantly with the increasing Ru/Ni mole ratio. Among all the catalysts investigated, the 30 wt% Ni-Ru-B loading amorphous Ni61Ru9B30/ZrO2 catalyst with 0.15 Ru/Ni mole ratio presented the best catalytic performance,over which higher than 99.9%of CO conversion was obtained in the temperature range of 230℃~250℃,and the CO2 conversion was kept under the level of 0.9%. | Qihai Liu Zili Liu LieWen Liao Xinfa Dong | 2010 | Journal of Natural Gas Chemistry2010，19，5： | 5 |
| 11 | The Research on Optimization of the Multiphase Flow Field of Biogas Plant by Using CFD Software显示文摘 | Ruyi Huang Yan Long Tao Luo Zili Mei Jun Wang Enshen Long | 2014 | Journal of Energy and Power Engineering2014，8，6： | 5 |
| 12 | Sonication-assisted dispersion of carbon nanotubes in aqueous solutions of the anionic surfactant SDBS:The role of sonication energy显示文摘Sonication is a powerful technique to promote the dispersion of carbon nanotubes(CNTs) and enhance their solubility;this is necessary for CNT applications,especially in the biochemical and biomedical fields.In this study,batch experiments were conducted to evaluate the role of sonication energy on the dispersion of CNTs in the presence of a widely used anionic surfactant,sodium dodecylbenzene sulfonate(SDBS).It was observed that the concentration of dispersed CNTs in the SDBS solution depended on the sonication energy,but not the sonication time or output power of the sonicator alone.The amount of dispersed CNTs was positively correlated with the concentrations of SDBS and CNTs,and the length of the CNTs.The promotion of oxygen-containing functional groups on the dispersed CNTs was observed at relatively low sonication energies.The optimal energy,i.e.the minimum energy supplied by sonication to achieve a saturated suspension of dispersed CNTs in the SDBS solution,was CNT diameter-dependent,because of the larger vdW forces between tubes of smaller diameter.An exponential decay curve was constructed for the optimal energy values as a function of the outer CNT diameter,to assist in determining the energy needed to disperse CNTs. | YANG Kun YI ZiLi JING QingFeng YUE RenLiang JIANG Wei LIN DaoHui | 2013 | Chinese Science Bulletin2013，58，18： | 5 |
| 13 | Value of Multi-detector CT in Detection of Isolated Spontaneous Superior Mesenteric Artery Dissection显示文摘Objective To investigate the role of multi-detector computed tomography(CT) in the diagnosis and classification of isolated spontaneous superior mesenteric artery dissection(ISSMAD). Methods From July 2012 to December 2016,30 consecutive patients with ISSMAD underwent CT scan at least two times. We retrospectively summarized the clinical characteristics and CT findings of them. The stenosis ratio of true lumen was compared between the patients without bowel ischemia and ones with bowel ischemia. Results There were 5 cases of type I ISSMAD,14 cases of type Ⅱ,1 case of type Ⅲ,7 cases of type Ⅳ and 3 cases of type V. Intestinal ischemia occurred in 5 patients. The stenosis ratio of true lumen in the patients without bowel ischemia was lower than that with bowel ischemia(45.6% vs. 76.0%,t=–14.5,P=0.000). Five patients with intestinal ischemia underwent superior mesenteric artery stenting and others received conservative therapy. The abdominal pain was alleviated for all the patients after treatment. Follow-up was complete in 30 cases. Follow-up CT angiography of superior mesenteric artery showed dissection remodeling in 12 patients. Conclusion Multi-detector CT is a valuable method in diagnosis and classification of ISSMAD and monitoring the changes of dissection. | Tao Li Shaohong Zhao Jinfeng Li Zili Huang Chuncai Luo Li Yang | 2017 | Chinese Medical Sciences Journal2017，32，1： | 5 |
| 14 | CO oxidation over ceria supported Au_(22) nanoclusters: Shape effect of the support显示文摘Gold(Au) nanoclusters have recently emerged as ideal models for understanding Au catalysis, because the nanosized Au particles have precise atomic numbers and uniform size. In this work, we studied for the first time the support shape effect on the catalysis of Au nanoclusters by using CO oxidation as a model reaction. Au_(22)(L^8)_6(L = 1,8-bis(diphenylphosphino) octane) nanoclusters were supported on CeO_2 rods or cubes, then pretreated at different temperatures(up to 673 K), allowing the gradual removal of the organic phosphine ligands. CO oxidation test over these differently pretreated samples shows that CeO_2 rods are much better supports than cubes for Au_(22) nanoclusters in enhancing the reaction rate. In situ IR spectroscopy coupled with CO adsorption indicates that the shape of CeO_2 support can impact the nature and quantity of exposed Au sites, as well as the efficiency of organic ligand removal. Although CeO_2 rods are helpful in exposing a greater percentage of total Au sites upon ligands removal, the percentage of active Au sites(denoted by Au d+, 0 < d < 1) is lower than that on CeO_2 cubes. The in situ extended X-ray absorption spectroscopy(EXAFS) and high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM) results show that the Au nanoclusters bound more strongly to the CeO_2 rods than to the cubes where the Au nanoclusters show more sintering. Considering the typical redox mechanism for CO oxidation over supported Au nanoclusters and nanoparticles, it is concluded that the reactivity of the lattice oxygen of CeO_2 is the determining factor for CO oxidation over Au_(22)/CeO_2. CeO_2 rods offer more reactive lattice oxygen and abundant oxygen vacancies than the cubes and thus make the rods a superior support for Au nanoclusters in catalyzing low temperature CO oxidation. | Zili Wu David R.Mullins Lawrence F.Allard Qianfan Zhang Laisheng Wang | 2018 | Chinese Chemical Letters2018，29，6： | 4 |
| 15 | A novel adaptive pigeon-inspired optimization algorithm based on evolutionary game theory显示文摘Dear editor,In pigeon-inspired optimization(PIO)algorithm[1],the computational process consists of two different stages that originate from the tools pigeons depending on during a flight.Based on this,its variants have been widely used in different domains and have achieved excellent results. | Xingshuo HAI Zili WANG Qiang FENG Yi REN Bo SUN Dezhen YANG | 2021 | Science China(Information Sciences)2021，64，3： | 4 |
| 16 | MMC-MTDC Transmission System with Partially Hybrid Branches显示文摘This paper proposes a hybrid submodule modular multilevel converter(MMC)topology which is suitable for multi terminal direct current(MTDC)transmission systems.Each arm of the proposed MMC topology consists of a half-bridge submodule(HBSM)branch and two parallel full-bridge submodule(FBSM)branches.Comparing with the conventional MTDC transmission system,the proposed topology can selectively block the DC fault current and isolate the corresponding fault line without expensive DC circuit breakers(DCCBs).Thus,the influence range of the DC fault can be reduced and the reliability of the power supply can be improved as well.The corresponding modulation and voltage balancing strategies are developed for the proposed hybrid MMC topology.The feasibility of the proposed topology and control strategy is verified in the MATLAB/Simulink simulation. | Yongyang Chen Shangzhi Pan Meng Huang Zili Zhu Yushuang Liu Xiaoming Zha | 2021 | CES Transactions on Electrical Machines and Systems2021，5，2： | 4 |
| 17 | Significance of neuroglobin in serum of acute atherosclerotic cerebral infarction patients显示文摘This study sought to examine neuroglobin (NGB) in the serum of acute cerebral infarction patients with double-antibody sandwich enzyme-linked immunosorbent assay to identify all risk factors, calculate infarct size, assess neurological impairment, and analyze the relation between NGB and each of these factors. The double-antibody sandwich assay indicated that levels of NGB in serum were unaltered within 6 hours following acute cerebral infarction compared with normal levels. NGB levels then underwent a distinct change, peaking at 24 hours then returning to normal levels in 72 hours. The results suggest that the level of NGB might be related to infarct size and low-density lipoprotein at 24 hours after acute cerebral infarction. There were no significant differences in neurological impairment scores and infarct size at different periods following infarction. The findings indicated that the level of NGB in serum of acute cerebral infarction patients was correlated with infarct time. | Shoucai Zhao Zhaohu Chu Lingsong Ma Yinong Chen Lei Wang Benxiao Wang Zili Huang Jun Zhang | 2011 | Neural Regeneration Research2011，6，27： | 4 |
| 18 | Genetic and Molecular Characterization of H9N2 Avian Influenza Viruses Isolated from Live Poultry Markets in Hubei Province, Central China, 2013–2017显示文摘H9N2 subtype avian influenza virus(AIV)is an influenza A virus that is widely spread throughout Asia,where it jeopardizes the poultry industry and provides genetic material for emerging human pathogens.To better understand the epidemicity and genetics of H9 subtype AIVs,we conducted active surveillance in live poultry markets(LPMs)in Hubei Province from 2013 to 2017.A total of 4798 samples were collected from apparent healthy poultry and environment.Realtime RT-PCR revealed that the positivity rate of influenza A was 26.6%(1275/4798),of which the H9 subtype accounted for 50.3%(641/1275)of the positive samples.Of the 132 H9N2 viral strains isolated,48 representative strains were subjected to evolutionary analysis and genotyping.Phylogenetic analysis revealed that all H9N2 viral genes had 91.1%–100%nucleotide homology,clustered with genotype 57,and had high homology with human H9N2 viruses isolated from2013 to 2017 in China.Using a nucleotide divergence cutoff of 95%,we identified ten distinct H9N2 genotypes that continued to change over time.Molecular analysis demonstrated that six H9N2 isolates had additional potential glycosylation sites at position 218 in the hemagglutinin protein,and all isolates had I155 T and Q226 L mutations.Moreover,44 strains had A558 V mutations in the PB2 protein and four had E627 V mutations,along with H9N2 human infection strains A/Beijing/1/2016 and A/Beijing/1/2017.These results emphasize that the H9N2 influenza virus in Hubei continues to mutate and undergo mammalian adaptation changes,indicating the necessity of strengthening the surveillance of the AIV H9N2 subtype in LPMs. | Zhibin Hu Fuhu Peng Zhenghui Xiong Wanpo Zhang Tingting Li Yuejun Shi Jun Xie Xin Jin Jingjing Huang Hongde Xiao Dingren Bi Nianhua Song Zili Li | 2021 | Virologica Sinica2021，36，2： | 4 |
| 19 | Progress on AlGaN-based solar-blind ultraviolet photodetectors and focal plane arrays显示文摘Solar-blind ultraviolet(UV)photodetectors(PDs)have attracted tremendous attention in the environmental,industrial,military,and biological fields.As a representative Ill-nitride material,AlGaN alloys have broad development prospects in the field of solar-blind detection due to their superior properties,such as tunable wide bandgaps for intrinsic UV detection.In recent decades,a variety of AlGaN-based PDs have been developed to achieve high-precision solar-blind UV detection.As integrated optoelectronic technology advances,AlGaN-based focal plane arrays(FPAs)are manufactured and exhibit outsta nding solar-blind imaging capability.Con sidering the rapid development of AlGaN detection techniques,this paper comprehensively reviews the progress on AlGaN-based solar-blind UV PDs and FPAs.First,the basic physical properties of AlGaN are presented.The epitaxy and p-type doping problems of AlGaN alloys are then discussed.Diverse PDs,including photoconductors and Schottky,metal-semiconductor-metal(MSM),p-i-n,and avalanche photodiodes(APDs),are dem on strated,and the physical mechanisms are analyzed to improve device performance.Additionally,this paper summarizes imaging technologies used with AlGaN FPAs in recent years.Benefit!ng from the development of AlGaN materials and optoelectronic devices,solar-blind UV detection technology is greeted with significant revolutions. | Qing Cai Haifan You Hui Guo Jin Wang Bin Liu Zili Xie Dunjun Chen Hai Lu Youdou Zheng Rong Zhang | 2021 | Light(Science & Applications)2021，10，6： | 4 |
| 20 | Treatment of spinal tuberculosis with ultrashort-course chemotherapy in conjunction with partial excision of pathologic vertebrae显示文摘 | Zili Wang Zhaohui Ge Weidong Jin Yongdong Qiao Huiqiang Ding Haoning Zhao Zhikai Lin Jun Chen Weiyu Yang | 2007 | The Spine Journal2007，，6： | 3 |
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