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Nonlinear analytical solution for one-dimensional consolidation of soft soil under cyclic loading

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第8期7卷 1358-1364页

作者： XIE Kang-he QI Tian dong ya-qin Department of Civil Engineering Zhejiang University Hangzhou 310027 China

This paper presents an analytical solution for one-dimensional consolidation of soft soil under some common types of cyclic loading such as trapezoidal cyclic loading, based on the assumptions proposed by Davis and Raymond （1965） that the decrease in permeability is proportional to the decrease in compressibility during the consolidation process of the soil and that the distribution of initial effective stress is constant with depth the solution obtained, some diagrams are prepared and the It is verified by the existing analytical solutions in special cases. Using telex ant consolidation behavior is investigated.

关键词： One-dimensional (1 D) consolidation Nonlinear consolidation theory Analytical solution Cyclic loading

Chameleon all-but-one extractable hash proof and its applications

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Science China(Information Sciences) 2018年第9期61卷 327-334页

作者： Gang HAN Hui LI Baodong qin dong ZHENG School of Electronics and Information Northwestern Polytechnical University National Engineering Laboratory for Wireless Security Xi'an University of Posts and Telecommunications State Key Laboratory of Cryptology

Dear editor,We will introduce the notion of chameleon All-ButOne Extractable Hash Proof(ABO-EHP)*** is a special kind of ABO-EHP[1]with a tag space T that comprises two branches,denoted by

关键词： EHP ABO CCA Chameleon all-but-one extractable hash proof and its applications PKE

Characteristics of Hydrocarbon Fluid Inclusions and Their Significance for Evolution of Petroleum Systems in the Dabashan Foreland,Central China

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Acta Geologica Sinica(English Edition) 2015年第3期89卷 861-875页

作者： LI Rongxi qin Xiaoli dong Shuwen LIU Shuwen School of Earthscience and Resources Chang'an University Key Laboratory for the study of Focused Magmatism and Giant Ore Deposits MLR Chinese Academy of Geological Sciences

Field investigation combined with detailed petrographic observation indicate that abundant oil,gas,and solid bitumen inclusions were entrapped in veins and cements of sedimentary rocks in the Dabashan foreland,which were used to reconstruct the oil and gas migration history in the context of tectonic *** stages of veins were recognized and related to the collision between the North China block and the yangtze block during the Indosinian orogeny from Late Triassic to Early Jurassic（Dl）,the southwest thrusting of the qinling orogenic belt towards the Sichuan basin during the yanshanian orogeny from Late Jurassic to Early Cretaceous（D2）,and extensional tectonics during Late Cretaceous to Paleogene（D3）,*** occurrences of hydrocarbon inclusions in these veins and their homogenization temperatures suggest that oil was generated in the early stage of tectonic evolution,and gas was generated later,whereas solid bitumen was the result of pyrolysis of previously accumulated *** stages of hydrocarbon fluid inclusions were also identified in cements of carbonates and sandstones of gas beds in the Dabashan foreland belt and the Dabashan foreland depression（northeastern Sichuan basin）,which recorded oil/gas formation,migration,accumulation and destruction of paleo-reservoirs during the *** analysis of hydrocarbon fluid inclusions contained in vein minerals shows that δ^（13）C_1 of gas in fluid inclusions ranges from-17.0‰ to-30.4‰（PDB） and δD from-107.7‰ to-156.7‰（SMOW）,which indicates that the gas captured in the veins was migrated natural gas which may be correlated with gas from the gas-fields in northern Sichuan *** geochemical comparison between bitumen and potential source rocks indicates that the Lower Cambrian black shale and the Lower Permian black limestone were the most possible source rocks of the *** with tectonic evolution history of the Dabashan foreland,the results of this study suggest that oil

关键词： Hydrocarbon fluid inclusion bitumen foreland mineral vein paleo- reservoir Dabashanforeland

The 30–60-day Intraseasonal Oscillations over the Subtropical Western North Pacific during the Summer of 1998

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Advances in Atmospheric Sciences 2014年第1期31卷 1-7页

作者： LU Riyu dong Huilin SU qin Hui DING State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences University of the Chinese Academy of Sciences Helmholtz Centre for Ocean Research Kiel and Kiel University

The features of 30-60-day convection oscillations over the subtropical western North Pacific （WNP） were investigated, along with the degree of tropical-subtropical linkage between the oscillations over the WNP during summer 1998. It was found that 30-60-day oscillations were extremely strong in that summer over both the subtropical and tro]~ical WNP, providing a unique opportunity to study the behavior of subtropical oscillations and their relationship to tropical oscillations. Further analyses indicated that 30-60-day oscillations propagate westwards over the subtropical WNP and reach eastern China. In addition, 30-60-day oscillations in the subtropics are affected by those over the South China Sea （SCS） and tropical WNP through two mechanisms：（1） direct propagation from the tropics into the subtropics; and （2） a seesaw pattern between the tropics and subtropics, with the latter being predominant.

关键词： intraseasonal oscillation convection western North Pacific tropical-extratropical interaction

Eddy analysis in the Eastern China Sea using altimetry data

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Frontiers of Earth Science 2015年第4期9卷 709-721页

作者： Dandi qin Jianhong WANG yu LIU Changming dong School of Marine Sciences Nanjing University of Information Science & Technology Nanjing 210044 China Institute of Geophysics and Planetary Physics University of California Los Angeles California USA Climate and Weather Disasters Collaborative Innovation Center Nanjing University of Information Science & Technology Nanjing 210044 China

Statistical characteristics of mesoscale eddies in the Eastern China Sea （ECS） are analyzed using altimetry sea surface height anomaly （SSHA） data from 1993 to 2010. A velocity geometry-based automated eddy detection scheme is employed to detect eddies from the SSHA data to generate an eddy data set. About 1,096 eddies （one lifetime of eddies is counted as one eddy） with a lifetime longer than or equal to 4 weeks are identified in this region. The average lifetime and radius of eddies are 7 weeks and 55 km, respectively, and there is no significant difference between cyclonic eddies （CEs） and anticyclonic eddies （AEs） in this respect. Eddies＇ lifetimes are generally longer in deep water than in shallow water. Most eddies propagate northeastward along the Kuroshio （advected by the Kuroshio）, with more CEs generated on its western side and AEs on its eastern side. The variation of the Kuroshio transport is one of the major mechanisms for eddy genesis, however the generation of AEs on the eastern side of the Kuroshio （to the open ocean） is also subject to other factors, such as the wind stress curl due to the presence of the Ryukyu Islands and the disturbance from the open ocean.

关键词： mesoscale eddy Eastern China Sea altimetrydata Kuroshio

Key-dependent cube attack on reduced Frit permutation in Duplex-AE modes

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Science China(Information Sciences) 2021年第3期64卷 226-228页

作者： Lingyue qin Xiaoyang dong Keting JIA Rui ZONG Institute for Advanced Study Tsinghua University Department of Computer Science and Technology Tsinghua University

Dear editor,Recently, the permutation-based cryptology becomes a good topic in symmetric-key research groups. Many dedicated ciphers are permutation-based, and researchers introduced lots of cryptographic permutations which were suitable for different applications(collision-resistant hashing, preimageresistant hashing, message authentication, message encryption, etc.). Frit(fault-resistant iterative transformation) is a new lightweight 384-bit cryptographic permutation proposed by Simon et al.

关键词： Frit Duplex authenticated encryption mode Key-dependent cube attack Key-recovery Permutation-based cryptology

Space efficient revocable IBE for mobile devices in cloud computing

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Science China(Information Sciences) 2020年第3期63卷 282-284页

作者： Baodong qin Ximeng LIU Zhuo WEI dong ZHENG National Engineering Laboratory for Wireless Security Xi'an University of Posts and Telecommunications State Key Laboratory of Cryptology School of Information Systems Singapore Management University Huawei Singapore Research Center

Dear editor,Revocation capacity is one of the main properties for an identity-based encryption(IBE), as in practice users’ private keys are possibly leaked or expired. However, existing revocable IBE schemes [1–3] usually lack of short keys. Recently, Lin et al. [4] proposed a method to design space efficient revocable IBE scheme from

关键词： IBE Space efficient revocable IBE for mobile devices in cloud computing

An Explicit Lower Bound for Blow Up Time in a Class of Nonlinear Wave Equations with Nonlinear Damping and Source Terms

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Acta Mathematicae Applicatae Sinica 2021年第1期37卷 148-154页

作者： Xiao-ming PENG ya-dong SHANG Xue-qin WANG School of Statistics and Mathematics Guangdong University of Finance and EconomicsGuangzhou 510320China School of Mathematics and Information Science Guangzhou UniversityGuangzhou 510006China College of Mathematics and Informatics South China Agricultural UniversityGuangzhou 510642China

This paper deals with an initial boundary value problem for a class of nonlinear wave equation with nonlinear damping and source terms whose solution may blow up in finite *** explicit lower bound for blow up time is ... 详细信息

关键词： lower bound blow up nonlinear wave equation nonlinear damping nonlinear source

Ni/bentonite catalysts prepared by solution combustion method for CO_2 methanation

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Chinese Journal of Chemical Engineering 2018年第11期26卷 2361-2367页

作者： yuexiu Jiang Tongxia Huang Lihui dong Zuzeng qin Hongbing Ji School of Chemistry and Chemical Engineering Guangxi Key Laboratory of Electrochemical Energy MaterialsGuangxi University School of Chemistry Sun Yat-sen University

A 20 wt% Ni/bentonite catalyst was prepared by a solution combustion synthesis (SCS), which exhibited higher activity for the CO_2methanation than that of an impregnation method (IPM), and the catalyst prepared by SCS showed a CO_2 conversion of 85% and a CH4selectivity of 100% at 300 °C, atmospheric pressure, and 3600 ml·(g cat)-1·h-1, and the catalyst exhibited stable within a 110-h reaction. The results showed higher me- tallic Ni dispersion, smaller Ni particle size, larger specific surface area and lower reduction temperature in the Ni/ bentonite prepared by SCS than that of IPM. And the Ni/bentonite prepared by the SCS moderated the interaction between NiO and bentonite.

关键词： CO2 methanation Ni/bentonite catalyst Solution combustion synthesis Impregnation method