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A Cenozoic tectono-sedimentary model of the Tainan Basin, the South China Sea: evidence from a multi-channel seismic profile

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第5期9卷 702-713页

作者： Wei-wei DING Jia-biao li Ming-bi li Xue-lin QIU Yin-xia FANG yong TANG Key Laboratory of Submarine Geoscience State Oceanic Administration Hangzhou 310012 China Second lnstitute of Oceanography State Oceanic Administration Hangzhou 310012 China Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

The Tainan Basin is one of the set of Cenozoic extensional basins along northern margin of the South China Sea that experienced extension and subsequently thermal subsidence. The Tainan Basin is close to the Taiwan Arc-Trench System and straddles a transition zone between oceanic and continental crust. A new regional multi-channel seismic profile （973-01） across the region of NE South China Sea is introduced in this paper. In seismic stratigraphy and structural geology, a model of Cenozoic tectono-sedimentation of the Tainan Basin is established. The results show that three stages can be suggested in Tainan Basin; In Stage A （Oligocene （？）-Lower Miocene） the stratigraphy shows restricted rifting, indicating crustal extension. Terrestrial sedi- ments mostly filled the faulted sags of the North Depression on the continental shelf. Structural highs, including the Central Uplift, blocked material transportation to the South Depression in abyssal basin. In Stage B the Tainan Basin （Middle-Upper Miocene） exhibits a broad subsidence resulting from the post-rifting thermal cooling. The faulted-sags in North Depression had been filled up. Terrestrial materials were transported over the structural highs and deposited directly in the South Depression through sub- marine gullies or canyons. This sedimentation resulted in a crucial change in the slope to a modem shape. In Stage C （Latest Miocene-Recent） a phase change from extension to compression took place due to the orogeny caused by the overthrusting of the Luzon volcanic arc. Many inverse structures, such as thrusts, fault bend folds, and a regional unconformity were formed. Forland basin began developing.

关键词： Southwest Tainan Basin Dual-layered structure Fault bend fold Tectono-sedimentary evolution

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Extended state observer-based control with an adjustable parameter for a large ground-based telescope

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Research in Astronomy and Astrophysics 2021年第12期21卷 509-518页

作者： Xiao-Xia yang yong-Ting Deng Bin Zhang Jian-li Wang Changchun Institute of Optics Fine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China

The high-precision requirements will always be constrained due to the complicated operating conditions of the ground-based telescope. Owing to various internal and external disturbances, it is necessary to study a control method, which should have a good ability on disturbance rejection and a good adaptability on system parameter variation. The traditional proportional-integral(PI) controller has the advantage of simple and easy adjustment, but it cannot deal with the disturbances well in different situations. This paper proposes a simplified active disturbance rejection control law, whose debugging is as simple as the PI controller, and with better disturbance rejection ability and parameter adaptability. It adopts a simplified second-order extended state observer(ESO) with an adjustable parameter to accommodate the significant variation of the inertia during the different design stages of the telescope. The gain parameter of the ESO can be adjusted online with a recursive least square estimating method once the system parameter has changed significantly. Thus, the ESO can estimate the total disturbances timely and the controller will compensate them accordingly. With the adjustable parameter of the ESO, the controller can always achieve better performance in different applications of the telescope. The simulation and experimental verification of the control law was conducted on a 1.2-meter ground based telescope. The results verify the necessity of adjusting the parameter of the ESO, and demonstrate better disturbance rejection ability in a large range of speed variations during the design stages of the telescope.

关键词： extended state observer large ground based telescope recursive least square disturbance rejection

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Security Considerations Based on PKI/CA in Manufacturing Grid

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Wuhan University Journal of Natural Sciences 2006年第6期11卷 1414-1418页

作者： YIN yong li Yu School of Information Engineering Wuhan University of Technology Wuhan 430070 Hubei China Department of Electronics and Information Engineering Wuhan University of Science and Engineering Wuhan 430073 Hubei China

In the manufacturing grid environment, the span of the consideration of security issues is more extensive, and the solutions for them are more complex, therefore these problems in manufacturing grid can＇t longer be addressed by existing security technologies. In order to solve this problem, the paper first puts forward the security architecture of manufacturing grid on the basis of the proposal of the security strategies for manufacturing grid; then the paper introduces key technologies based on public key infrastructure-certificate authority （PKI/CA） to ensure the security of manufacturing grid, such as single sign-on, security proxy, independent authentication and so on. Schemes discussed in the paper have some values to settle security problems in the manufacturing grid environment.

关键词： manufacturing grid public key infrastructure-certificate authority (PKI/CA) single sign-on security authentication

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Simultaneous nitrification and denitrification conducted by Halomonas venusta MA-ZP17-13 under low temperature conditions

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Acta Oceanologica Sinica 2021年第9期40卷 94-104页

作者： Guizhen li Qiliang Lai Guangshan Wei Peisheng yan Zongze Shao School of Environment Harbin Institute of TechnologyHarbin 150090China Key Laboratory of Marine Genetic Resources Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361005China State Key Laboratory Breeding Base of Marine Genetic Resources Xiamen 361005China Fujian Key Laboratory of Marine Genetic Resources Xiamen 361005China Sourthem Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China

Nitrification is a key step in the global nitrogen *** with autotrophic nitrification,heterotrophic nitrification remains poorly *** this study,Halomonas venusta MA-ZP17-13,isolated from seawater in shrimp aquaculture (Penaeus vannamei),could simultaneously undertake nitrification and *** the initial ammonium concentration at 100 mg/L,the maximum ammonium-nitrogen removal rate reached98.7%under the optimal conditions including C/N concentration ratio at 5.95,p H at 8.93,and Na Cl at 2.33%.The corresponding average removal rate was 1.37 mg/(L·h)(according to nitrogen) in 3 d at 11.2℃.By whole genome sequencing and analysis,nitrification-and denitrification-related genes were identified,including ammonia monooxygenase,nitrate reductase,nitrite reductase,nitric oxide dioxygenase and nitric oxide synthase;while no gene encoding hydroxylamine oxidase was identified,it implied the existence of a novel nitrification pathway from hydroxylamine to *** results indicate heterotrophic bacterium *** MA-ZP17-13 can undertake simultaneous nitrification and denitrification at low temperature and has potential for NH_(4)^(+)-N/NH_(3)-N removal in marine aquaculture systems.

关键词： Halomonas heterotrophic nitrification denitrification ammonia oxidization ammonia removal

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Expressions of type I collagen, α2 integrin and β1 integrin in sclera of guinea pig with defocus myopia and inhibitory effects of bFGF on the formation of myopia

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International Journal of Ophthalmology(English edition) 2013年第1期6卷 54-58页

作者： Xiao-Dan Tian yong-Xia Cheng Gui-Bo liu Su-Fen Guo Chun-Lei Fan li-Hui Zhan yan-Chun Xu Department of Ophthalmology the First Hospital Affiliated to China Medical University Department of Ophthalmology the Fourth People's Hospital of Shenyang Department of Pathology Mudanjiang Medical University Department of Anatomy Mudanjiang Medical University

AIM:To investigate the expressions of type I collagen, α2 integrin and β1 integrin in the posterior sclera of guinea pigs with defocus myopia and whether basic fibroblast growth factor (bFGF) injection inhibits the formation and development of myopia by upregulating the expression of type I collagen, α2 integrin and β1 integrin. METHODS:After 14 days of treatment, the refractive state and axial length were measured and the levels of type I collagen, α2 integrin and β1 integrin were assayed in the posterior sclerae of groups of guinea pigs that wore a monocular-7D polymethylmethacrylate (PMMA) lens or had -7D lens wear followed by the peribulbar injection of Phosphate Buffer Solution (PBS) or bFGF. The untreated fellow eye served as a control. Guinea pigs with no treatment served as normal group. ·RESULTS:The results showed that 14 days of monocular defocus increased axial eye length and refraction, while bFGF delivery inhibited them markedly. Further, it was also found that the monocular-7D lens could decrease the levels of type I collagen, α2 integrin and β1 integrin expressions, while, unlike PBS, bFGF increased them significantly in comparison to contralateral control eyes and normal eyes. CONCLUSION:bFGF can prevent the formation anddevelopment of defocus myopia by upregulating the expressions of type I collagen, α2 integrin and β1 integrin. Taken together, our results demonstrate that bFGF promotes sclera remodeling to prevent myopia in guinea pigs.

关键词： defocus myopia type I collagen α2 integrin β1 integrin bFGF

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Preventing Hardware Trojans in Switch Chip Based on Payload Decoupling

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China Communications 2021年第8期18卷 96-108页

作者： Ke Song Binghao yan Xiangyu li Qinrang liu ling Ouyang Information Engineering University Zhengzhou 450002China Tsinghua University Beijing 100084China

Hardware Trojans in integrated circuit chips have the characteristics of being covert,destructive,and difficult to protect,which have seriously endangered the security of the chips themselves and the information systems to which they *** solutions generally rely on passive detection *** this paper,a hardware Trojans active defense mechanism is designed for network switching chips based on the principle of encryption *** encoding the data entering the chip,the argot hidden in the data cannot trigger the hardware Trojans that may exist in the chip,so that the chip can work normally even if it is implanted with a hardware *** proposed method is proved to be effective in preventing hardware Trojans with different trigger characteristics by simulation tests and practical tests on our secure switching chip.

关键词： network switching chip active defense hardware trojan payload decoupling

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Extraction of reflected waves from acoustic logging data using variation mode decomposition and curvelet transform

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Petroleum Science 2024年第5期21卷 3142-3156页

作者： Fan-Tong Kong yong-Xiang liu Xi-Hao Gu li Zhen Cheng-Ming Luo Sheng-Qing li Ocean College Jiangsu University of Science and TechnologyZhenjiang212100jiangsuChina School of Geosciences China University of Petroleum(East China)Qingdao266580Shandong.China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of TechnologyChengdu610059SichuanChina

Remote reflection waves, essential for acquiring high-resolution images of geological structures beyond boreholes, often suffer contamination from strong direct mode waves propagating along the ***, the extraction of weak reflected waves becomes pivotal for optimizing migration image quality. This paper introduces a novel approach to extracting reflected waves by sequentially operating in the spatial frequency and curvelet domains. Using variation mode decomposition(VMD), single-channel spatial domain signals within the common offset gather are iteratively decomposed into high-wavenumber and low-wavenumber intrinsic mode functions(IMFs). The low-wavenumber IMF is then subtracted from the overall waveform to attenuate direct mode waves. Subsequently, the curvelet transform is employed to segregate upgoing and downgoing reflected waves within the filtered curvelet domain. As a result, direct mode waves are substantially suppressed, while the integrity of reflected waves is fully preserved. The efficacy of this approach is validated through processing synthetic and field data, underscoring its potential as a robust extraction technique.

关键词： Borehole acoustic reflection imaging Variation mode decomposition Curvelet transform Weak signal extraction

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Cavernous hemangioma of an intrapancreatic accessory spleen mimicking a pancreatic tumor:A case report

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World Journal of Clinical Cases 2022年第6期10卷 1973-1980页

作者： Jia-yan Huang Rui yang Jia-Wu li Qiang Lu yan Luo Department of Medical Ultrasound West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Intrapancreatic accessory spleen(IPAS)is an uncommon condition,with the majority of cases presenting as solid ***,this condition is frequently misdiagnosed as pancreatic solid ***,splenic cavernous hemangioma is a rare disorder,whereas lesions with a cystic appearance arising from IPAS have not been *** SUMMARY Herein,we present a case involving a 32-year-old male who had a complex cystic lesion in the tail of the pancreas revealed by conventional *** lesion was misdiagnosed as a pancreatic cystadenoma because of its confusing anatomic location,as well as due to its peripheral nodular and internal septal enhancement patterns on contrast-enhanced *** multidisciplinary discussion,the patient finally underwent laparoscopic pancreatic body and tail *** pathology demonstrated the lesion to be a cavernous hemangioma arising from the *** Cavernous hemangioma in the intrapancreatic accessory spleen may mimic pancreatic cystadenoma,which is a condition with the potential to be *** follow-ups or surgical interventions may be helpful for the exclusion of malignant risks in complicated cystic lesions,especially those with parietal and septal enhancements.

关键词： Intrapancreatic accessary spleen Pancreas Diagnosis Contrast enhanced ultrasound Case report

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A lithiated gel polymer electrolyte with superior interfacial performance for safe and long-life lithium metal battery

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Journal of Energy Chemistry 2021年第4期30卷 313-322页

作者： Jia-Jia Yuan Chuang-Chao Sun li-Feng Fang You-Zhi Song yan yan Ze-lin Qiu Yu-Jie Shen Han-Ying li Bao-Ku Zhu Key Laboratory of Macromolecular Synthesis and Functionalization(Ministry of Education) Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

Rechargeable lithium metal batteries(LMBs)have gained much attention ***,the short lifespan and safety issues restrict their commercial *** we report a novel gel polymer electrolyte(GPE)based on lithiated poly(vinyl chloride-r-acrylic acid)(PVCAAli)to realize dendritesuppressing and long-term stable lithium metal *** chains ensure the quick gelation process and high electrolyte uptake,and lithiated PAA segments enable the increase of mechanical strength,acceleration of lithium-ion transmission and improvement of interfacial *** GPE showed much higher mechanical strength compared with other free-standing GPEs in previous *** displays a superior ionic conductivity of 1.50 m S cm^(-1) and a high lithium-ion transference number of 0.59 at room ***,the lithiated GPE exhibits excellent interfacial compatibility with lithium metal *** symmetrical cells with PVCAAli GPE yield low hysteresis of 50 m V over1000 h at 1.0 m A cm^(-2).And the possible mechanism of the lithiated GPE with improved lithium-ion transfer and interfacial property was ***,both the li4Ti5O12/li and lithium-sulfur(li-S)cells assembled with PVCAAli GPE show outstanding electrochemical performance,retaining high discharge capacities of 133.8 m Ah g^(-1) and 603.8 m Ah g^(-1) over 200 cycles,*** work proves excellent application potential of the highly effective and low-cost PVCAAli GPE in safe and long-life LMBs.

关键词： lithiation Gel polymer electrolyte lithium dendrite Safety lithium metal battery

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Solidification structure simulation and casting process optimization of GCr15 bloom alloy

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China Foundry 2022年第1期19卷 63-74页

作者： Jie li Hao-tian Wu yang liu yan-hui Sun Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China

Based on the solidification heat transfer model and CAFÉmodel,the solidification structure of GCr15 bloom alloy was *** nail shooting and acid etching experiments,the solidification models were *** secondary dendrite arm spacing(SDAS)model of GCr15 was obtained by simulation calculation and metallographic *** the increase of casting speed,the SDAS,equiaxed crystal ratio(ECR)and average grain size *** the rise of superheat,the SDAS increases in the 20-70 mm of thickness and decreases in the 80-160 mm of *** ECR decreases and the average grain size increases with the increase of *** the increase of specific water flow,both the SDAS and ECR *** minimum average grain size is obtained when the specific water flow is 0.20 L·kg^(-1).The central carbon segregation index is reduced from 1.11 to 1.075.

关键词： numerical simulation continuous casting equiaxed crystal ratio secondary dendrite arm spacing carbon segregation

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