|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The second natural gas hydrate production test in the South China Sea显示文摘Clayey silt reservoirs bearing natural gas hydrates(NGH)are considered to be the hydrate-bearing reservoirs that boast the highest reserves but tend to be the most difficult to exploit.They are proved to be exploitable by the first NGH production test conducted in the South China Sea in 2017.Based on the understanding of the first production test,the China Geological Survey determined the optimal target NGH reservoirs for production test and conducted a detailed assessment,numerical and experimental simulation,and onshore testing of the reservoirs.After that,it conducted the second offshore NGH production test in 1225 m deep Shenhu Area,South China Sea(also referred to as the second production test)from October 2019 to April 2020.During the second production test,a series of technical challenges of drilling horizontal wells in shallow soft strata in deep sea were met,including wellhead stability,directional drilling of a horizontal well,reservoir stimulation and sand control,and accurate depressurization.As a result,30 days of continuous gas production was achieved,with a cumulative gas production of 86.14×104 m3.Thus,the average daily gas production is 2.87×10^4 m^3,which is 5.57 times as much as that obtained in the first production test.Therefore,both the cumulative gas production and the daily gas production were highly improved compared to the first production test.As indicated by the monitoring results of the second production test,there was no anomaly in methane content in the seafloor,seawater,and atmosphere throughout the whole production test.This successful production test further indicates that safe and effective NGH exploitation is feasible in clayey silt NGH reservoirs.The industrialization of hydrates consists of five stages in general,namely theoretical research and simulation experiments,exploratory production test,experimental production test,productive production test,and commercial production.The second production test serves as an important step from the exploratory production test to experimental production test. | Jian-liang Ye Xu-wen Qin Wen-wei Xie Hai-long Lu Bao-jin Ma Hai-jun Qiu Jin-qiang Liang Jing-an Lu Zeng-gui Kuang Cheng Lu Qian-yong Liang Shi-peng Wei Yan-jiang Yu Chunsheng Liu Bin Li Kai-xiang Shen Hao-xian Shi Qiu-ping Lu Jing Li Bei-bei Kou Gang Song Bo Li He-en Zhang Hong-feng Lu Chao Ma Yi-fei Dong Hang Bian | 2020 | China Geology2020，3，2： | 22 |
| 2 | Characterization and Source Apportionment of Volatile Organic Compounds in Urban and Suburban Tianjin, China显示文摘Tianjin is the third largest megacity and the fastest growth area in China, and consequently faces the problems of surface ozone and haze episodes. This study measures and characterizes volatile organic compounds(VOCs), which are ozone precursors, to identify their possible sources and evaluate their contribution to ozone formation in urban and suburban Tianjin,China during the Ha Chi(Haze in China) summer campaign in 2009. A total of 107 species of ambient VOCs were detected,and the average concentrations of VOCs at urban and suburban sites were 92 and 174 ppbv, respectively. Of those, 51 species of VOCs were extracted to analyze the possible VOC sources using positive matrix factorization. The identified sources of VOCs were significantly related to vehicular activities, which specifically contributed 60% to urban and 42% to suburban VOCs loadings in Tianjin. Industrial emission was the second most prominent source of ambient VOCs in both urban and suburban areas, although the contribution of industry in the suburban area(36%) was much higher than that at the urban area(16%). We conclude that controlling vehicle emissions should be a top priority for VOC reduction, and that fast industrialization and urbanization causes air pollution to be more complex due to the combined emission of VOCs from industry and daily life, especially in suburban areas. | HAN Meng LU Xueqiang ZHAO Chunsheng RAN Liang HAN Suqin | 2015 | Advances in Atmospheric Sciences2015，32，3： | 16 |
| 3 | Impending HRT wave precursors to the Wenchuan M_s8.0 earthquake and methods of earthquake impending prediction by using HRT wave显示文摘We deployed four geo-electric monitoring stations in Sichuan and Yunnan provinces from 2004, using the new generation of equipment (PS-100) and technologies to capture the HRT wave earthquake precursor. Before the Wenchuan Ms8.0 earthquake, we recorded the HRT wave precursor at the only operating station in Hongge (HG, Δ=465 km) and found that significant impending signal had been recorded at the station in the early morning ( 0―5 am) of 12th of May, 2008. The precursor for this earthquake is consistent with precursors recorded for other strong earthquakes. The measured physical properties (geo-resistivity and telluric-current) show tidal wave period oscillations from several days to several months before the earthquakes and the amplitude of such HT oscillation increases significantly towards the occurrence of an earthquake. These HT and RT waves from the epicenter have a causal relationship with the earthquakes that happened several days later. The arrival time of two RT waves is proportional to the distance from the station to the epicenter. The estimated natural decay of the amplitude is correlated with the natural period (T0) of the earthquake fault, which is proportional to the fault length. From this relationship, we can predict the earthquake magnitude. For magnitude 6―9 earthquakes, the natural period is about 1―6 hours. Such oscillation comes from the epicenter area and they can propagate several thousand kilometers in the Earth's crust. Before a strong earthquake in the shallow crust, the conductive pore fluid will experience major changes before the fault rapture. Such fluid change will emit an oscillation in the pore fluid pressure. This is the mechanism for the HRT wave generation. Since the China Earthquake Administration funded the HRT wave short-term earth-quake prediction project in 2003, the first record of HRT precursor wave has been recorded from the 2004-12-26 Sumatra Mw9.0 earthquake with the largest epicentre distance Δ=2900 km. Thereafter, we have captured HRT waves from more than twenty strong earthquakes, which are well-matched and show repeatability, consistency and regularity. All our observation with the HRT waves demonstrate that HRT wave precursors to earthquakes indeed exist. Strong earthquakes can be predicted and short-term and impending earthquake prediction is achievable in the very near future. From all the observations, including the ones at HG station from Wenchuan Ms8.0 earthquake, we conclude that using HRT wave to predict earthquakes is feasible. | QIAN FuYe ZHAO BiRu QIAN Wei ZHAO Jian HE ShiGen ZHANG HongKui LI ShiYu LI ShaoKun YAN GuLiang WANG ChengMin SUN ZhenKai ZHANG DongNing LU Jun ZHANG Ping YANG GuoJun SUN JiaLin GUO ChunSheng TANG YuXiong XU JianMing XIA KunTao JU Hang YIN BangHong LI Ming YANG DongSheng QI WeiLuo HE TaiMing GUAN HuaPing ZHAO YuLin | 2009 | Science China Earth Sciences2009，52，10： | 8 |
| 4 | Mathematical Analysis on the Uniqueness of Reverse Algorithm for Measuring Elastic-plastic Properties by Sharp Indentation显示文摘The reverse analysis provides a convenient method to determine four elastic-plastic parameters through an indentation curve such as Young s modulus E, hardness H, yield strength σy and strain hardening exponent n. In this paper, mathematical analysis on a reverse algorithm from Dao model (Dao et al., Acta Mater., 2001, 49, 3899) was carried out, which thought that only when 20 ≤E*/σ0.033≤ 26 and 0.3 | Yongli Huang Xiaofang Liu Yichun Zhou Zengsheng Ma Chunsheng Lu | 2011 | Journal of Materials Science & Technology2011，27，7： | 7 |
| 5 | A chemo-mechanical model coupled with thermal effect on the hollow core–shell electrodes in lithium-ion batteries显示文摘Electrode is a key component to remain durability and safety of lithium-ion(Li-ion) batteries. Li-ion insertion/removal and thermal expansion mismatch may induce high stress in electrode during charging and discharging processes. In this paper, we present a continuum model based on COMSOL Multiphysics software, which involves thermal, chemical and mechanical behaviors of electrodes. The results show that,because of diffusion-induced stress and thermal mismatch, the electrode geometry plays an important role in diffusion kinetics of Li-ions. A higher local compressive stress results in a lower Li-ion concentration and thus a lower capacity when a particle is embedded another, which is in agreement with experimental observations. | Bin Hu Zengsheng Ma Weixin Lei Youlan Zou Chunsheng Lu | 2017 | Theoretical & Applied Mechanics Letters2017，7，4： | 6 |
| 6 | Analysis and Simulation of Evolution Induced Catastrophe显示文摘A model of evolution induced catastrophe(EIC)characterized by a nonlocal interaction is proposed.The general feature of the model is its two bias states:explosively catastrophic and globally stable,both consisting in a cascade of locally unstable states.A one-dimensional analysis reveals a transition region from globally stable to catastrophe.A two-dimensional simulation gives a thin fractal fracture profile similar to that observed and also a possible spectrum of fracture fractal.All these are different from percolation.Hence,the EIC model may represent a prototype of natural processes. | BAI Yilong XIA Mengfen KE Fujiu LU Chunsheng LING Zhong | 1993 | Chinese Physics Letters1993，10，3： | 5 |
| 7 | A new method to determine the elastoplastic properties of ductile materials by conical indentation显示文摘Based on load-displacement curves,indentation is widely used to extract the elastoplastic properties of materials.It is generally believed that such a measure is non-unique and a full stress-strain curve cannot be obtained using plural sharp and deep spherical indenters.In this paper we show that by introducing an additional dimensionless function of A/A (the ratio of residual area to the area of an indenter profile) in the reverse analysis,the elastoplastic properties of several unknown materials that exhibit visually indistinguishable load-displacement curves can be uniquely determined with a sharp indentation. | MA ZengSheng ZHOU YiChun LONG ShiGuo LU ChunSheng | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，6： | 4 |
| 8 | Principle and Experimental Verification of Novel Dual Driving Face Rotary Ultrasonic Motor显示文摘Existing rotary ultrasonic motors operating in extreme environments cannot meet the requirements of good environmental adaptability and compact structure at same time,and existing ultrasonic motors with Langevin transducers show better environmental adaptability,but size of these motors are usually big due to the radial arrangement of the Langevin transducers.A novel dual driving face rotary ultrasonic motor is proposed,and its working principle is experimentally verified.The working principle of the novel ultrasonic motor is firstly proposed.The 5th in-plane flexural vibration travelling wave,excited by the Langevin transducers around the stator ring,is used to drive the rotors.Then the finite element method is used in the determination of dimensions of the prototype motor,and the confirmation of its working principle.After that,a laser Doppler vibrometer system is used for measuring the resonance frequency and vibration amplitude of the stator.At last,output characteristics of the prototype motor are measured,environmental adaptability is tested and performance for driving a metal ball is also investigated.At room temperature and 200 V(zero to peak) driving voltage,the motor's no-load speed is 80 r/min,the stalling torque is 0.35 N·m and the maximum output power is 0.85 W.The response time of this motor is 0.96 ms at the room temperature,and it decreases or increases little in cold environment.A metal ball driven by the motor can rotate at 210 r/min with the driving voltage 300 V(zero to peak).Results indicate that the prototype motor has a large output torque and good environmental adaptability.A rotary ultrasonic motor owning compact structure and good environmental adaptability is proposed,and lays the foundations of ultrasonic motors' applications in extreme environments. | LU Xiaolong HU Junhui YANG Lin ZHAO Chunsheng | 2013 | Chinese Journal of Mechanical Engineering2013，26，5： | 4 |
| 9 | Acupuncture inhibits cue-induced heroin craving and brain activation显示文摘Previous research using functional MRI has shown that specific brain regions associated with drug dependence and cue-elicited heroin craving are activated by environmental cues. Craving is an important trigger of heroin relapse, and acupuncture may inhibit craving. In this study, we performed functional MRI in heroin addicts and control subjects. We compared differences in brain activation between the two groups during heroin cue exposure, heroin cue exposure plus acupuncture at the Zusanli point (ST36) without twirling of the needle, and heroin cue exposure plus acupuncture at the Zusanli point with twirling of the needle. Heroin cue exposure elicited significant activation in craving-related brain regions mainly in the frontal lobes and callosal gyri. Acupuncture without twirling did not significantly affect the range of brain activation induced by heroin cue exposure, but significantly changed the extent of the activation in the heroin addicts group. Acupuncture at the Zusanli point with twirling of the needle significantly decreased both the range and extent of activation induced by heroin cue exposure compared with heroin cue exposure plus acupuncture without twirling of the needle. These experimental findings indicate that presentation of heroin cues can induce activation in craving-related brain regions, which are involved in reward, learning and memory, cognition and emotion. Acupuncture at the Zusanli point can rapidly suppress the activation of specific brain regions related to craving, supporting its potential as an intervention for drug craving. | Xinghui Cai Xiaoge Song Chuanfu Li Chunsheng Xu Xiliang Li Qi Lu | 2012 | Neural Regeneration Research2012，7，33： | 4 |
| 10 | Deformation and failure processes of kaolinite under tension:Insights from molecular dynamics simulations显示文摘As a primary constituent of soft rocks, kaolinite plays an important role in large deformations of underground structures, which usually leads to serious safety risks. This paper investigates the deformation and failure processes of kaolinite under tension using molecular dynamics simulations. Based on the atomistic scale of these deformation and failure processes and their stressstrain curves, Young's moduli and strengths in three crystal directions and the surface energy of the(001) plane were obtained,which were consistent with theoretical predictions. The number of broken bonds and their corresponding broken sequences were determined. The results of our study indicated that as more bonds break during tension, the initiation of crack led to a sharp decrease in stress. We also explored the influence of temperature on the mechanical properties of kaolinite, which indicated that as temperature increased, the tensile strength and Young's modulus decreased. | Hua Yang ManChao He ChunSheng Lu WeiLi Gong | 2019 | Science China(Physics,Mechanics & Astronomy)2019，62，6： | 3 |
| 11 | Prediction of Failure Modes during Deep Drawing of Metal Sheets with Nickel Coating显示文摘To optimize the process parameters,it is necessary to exactly predict failure modes during deep drawing of coated metal sheets,where two main failure forms are fracture and wrinkling.In this paper,finite element simulations based on continuous damage mechanics were used to study the failure behavior during a cylindrical deep drawing of metal sheets with nickel coating.It is shown that taking the effect of blank holder force into account,these two failure modes can be predicted.The simulation results are well consistent with that obtained from experiments. | Jie Wu Zengsheng Ma Yichun Zhou Chunsheng Lu | 2013 | Journal of Materials Science & Technology2013，29，11： | 3 |
| 12 | The first record of Ophioleila elegans (Echinodermata:Ophiuroidea) from a deep-sea seamount in the Northwest Pacific Ocean显示文摘The rare ophiuroid species,Ophioleila elegans,was collected by the submersible Jiaolong from 1 660 m depth on the Caiwei Guyot located in the Magellan Seamount Chain in the Northwest Pacific Ocean.This is the first published record of this species since the types were described from similar habitat off Hawaii.We provide more detailed morphologic characteristics of arm skeleton and a phylogenetic analysis based on CO1 sequences.Both morphology and phylogeny results suggest that the genus Ophioleila is more closely related to Ophiactids than Hemieuryalids. | ZHANG Dongsheng LU Bo WANG Chunsheng O'HARA Timothy D | 2018 | Acta Oceanologica Sinica2018，37，10： | 3 |
| 13 | A novel in-plane mode rotary ultrasonic motor显示文摘Ultrasonic motors have the merits of high ratio of torque to volume, high positioning precision, intrinsic holding torque, etc., compared to the conventional electromagnetic motors. There have been several potential applications for this type of motor in aerospace exploration, but bearings and bonding mechanism of the piezoelectric ring in the motors limit the performance of them in the space operation conditions. It is known that the Langevin type transducer has excellent energy efficiency and reliability. Hence using the Langevin type transducer in ultrasonic motors may improve the reliability of piezoelectric motors for space applications. In this study, a novel in-plane mode rotary ultrasonic motor is designed, fabricated, and characterized. The proposed motor operates in in-plane vibration mode which is excited by four Langevin-type bending vibrators separately placed around a ring-shaped stator. Two tapered rotors are assembled to the inner ring of the stator and clamped together by a screw nut. In order to make the motor more stable and convenient to fix, a thin cylindrical support is placed under the stator ring. Due to its no-bearing structure and Langevin transducer excitation, the prototype ultrasonic motor may operate well in aeronautic and astronautic environments. | Lu Xiaolong Hu Junhui Yang Lin Zhao Chunsheng | 2014 | Chinese Journal of Aeronautics2014，27，2： | 3 |
| 14 | Importance of integrating nanotechnology with pharmacology and physiology for innovative drug delivery and therapy - an illustration with, firsthand examples显示文摘纳米技术在药交货广泛地被使用了改进各种各样的疾病的治疗学的结果。巨大的努力在与他们的生物命运和函数的关系集中于 nanoparticles 的物理化学的性质的新奇 nanoparticles 和描述的开发。然而在这些基于纳米技术的药交货系统的设计和评估,交付的药的药理学并且(patho-) 主人的生理学收到了更少的注意。在这评论,我们讨论集成于使纳米技术能的药交货系统和治疗的设计的重要药理学机制,生理的特征,和病理学的因素。第一手的例子被举由利用 1 为癌症治疗说明如此的综合设计策略的原则和优点)到克服的multidrug抵抗的癌症的药药和 drug-nanomaterial 联合的细胞内部的 synergistic 相互作用, 2 )循环系统到的血流动方向为肺转移最大化药交货到肿瘤 neovasculature 和房间 overexpressing integrin 受体, 3 )装饰 nanocarriers 和 t 的内长的脂蛋白关于在糖尿病管理的申请,一个使纳米技术能的靠近环的胰岛素交货系统被设计在生理地相关的时间规模和葡萄糖层次提供动态胰岛素版本。和另外的研究结果,这些例子建议药理学的相互影响的那利用,(patho-) 生理学和纳米技术是一条灵巧的途径与高效率和翻译潜力开发创新的药交货系统和治疗。 | Rui Xue ZHANG Jason LI Tian ZHANG Mohammad A AMINI Chunsheng HE Brian LU Taksim AHMED HoYin LIP Andrew M RAUTH Xiao Yu WU | 2018 | Acta Pharmacologica Sinica2018，39，5： | 3 |
| 15 | Mechanical properties of a novel, lightweight structure inspired by beetle's elytra显示文摘A new kind of bio-inspired, lightweight structure was designed and built from carbon fibre prepreg based on the cross-sectional microstructure of a beetle's elytra. The compression strength and failure process of the resulting structure was analysed using the finite element method; while at the same time, a quasi-static compression experiment was performed using an electronic universal testing machine to verify the effectiveness and accuracy of this finite element method. This bio-inspired structure was compared against a conventional honeycomb structure using FEM, revealing that for a given porosity and load parallel to the axis of the core tubes the respective compressive and specific compressive strengths of the bioinspired structure are much higher at 84.3 MPa and194.7 MPa/(g cm-3); thus demonstrating that this bioinspired structure has superior compressive capability. | Ce Guo Dong Li Zhenyu Lu Chunsheng Zhu Zhendong Da | 2014 | Chinese Science Bulletin2014，59，26： | 3 |
| 16 | A Novel Search Engine for Internet of Everything Based on Dynamic Prediction显示文摘In recent years, with the rapid development of sensing technology and deployment of various Internet of Everything devices, it becomes a crucial and practical challenge to enable real-time search queries for objects, data, and services in the Internet of Everything. Moreover, such efficient query processing techniques can provide strong facilitate the research on Internet of Everything security issues. By looking into the unique characteristics in the IoE application environment, such as high heterogeneity, high dynamics, and distributed, we develop a novel search engine model, and build a dynamic prediction model of the IoE sensor time series to meet the real-time requirements for the Internet of Everything search environment. We validated the accuracy and effectiveness of the dynamic prediction model using a public sensor dataset from Intel Lab. | Hui Lu Shen Su Zhihong Tian Chunsheng Zhu | 2019 | China Communications2019，16，3： | 2 |
| 17 | Numerical simulation of evolution-induced catastrophe显示文摘 | Lu Chunsheng Ke Fujiu Bai Yilong | 1995 | Science in China (seties A)1995，38，4： | 1 |
| 18 | Construction of Streptomyces lydicus A01 transformant with the chit33 gene from Trichoderma harzianum CECT2413 and its biocontrol effect on Fusaria显示文摘Streptomyces lydicus A01 resists many plant pathogens (including Fusarium spp.) by producing the antifungal agent natamycin, which binds to the ergosterol of fungal cell membranes and inhibits the growth of pathogens. Trichoderma harzianum CECT2413 is a widely-distributed soil fungus that antagonizes several plant fungal pathogens (including Fusarium spp.) by producing chi-tinase and degrading chitin, a major component of the fungal cell wall. This study attempted to enhance the biocontrol effect of S. lydicus A01 on Fusarium spp. by transforming the chitinase gene of Trichoderma. Chitinase and natamycin could act synergisti-cally on both the cell walls and cell membranes of pathogens. The 33-kD chitinase-encoding gene (chit33) was cloned and conju-gal-transformed from T. harzianum CECT2413 to S. lydicus A01, and then confirmed via polymerase chain reaction (PCR) assays. Subsequent analyses using the 3,5-dinitrosalicylic acid (DNS) method and ultraviolet spectrophotometry showed that compared with its wild type strain (WT), the S. lydicus A01 conjugal transformant (CT) with chit33 gene exhibited substantially higher chi-tinase activity and natamycin production. The resistance of S. lydicus A01-chit33 CT and WT to four Fusaria in crops and vegetables was tested via the cup-plate method. Compared with the WT, the conjugal transformant of S. lydicus A01 with chit33 gene from T. harzianum CECT2413 showed greatly increased biocontrol effect on fusarium disease. This study would be beneficial to the development of high-quality antifungal bio-agents for agricultural applications via the synergy between the previously non-existent and pre-existing functions achieved through heterogeneous gene transformation. | WU Qiong BAI LinQuan LIU WeiCheng LI YingYing LU CaiGe LI YaQian LIN ZhenYa WANG Meng XUE ChunSheng CHEN Jie | 2013 | Chinese Science Bulletin2013，58，26： | 1 |
| 19 | ' Personal innovativeness, social influences and adoption of wireless Internet services via mobile technology 显示文摘 | LU J YAO J E Yu Chunsheng | 2005 | Journal of Strategic Information Systems2005，14，3： | 1 |
| 20 | Gearshift control for dry dual-clutch transmissions显示文摘 | Ni Chunsheng Lu Tongli Zhang Jianwu | 2009 | Wseas Transactions on Systems2009，8，11： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员