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Interaction between adjacent left-lateral strike-slip faults and thrust faults: the 1976 Songpan earthquake sequence

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Chinese Science Bulletin 2008年第16期53卷 2520-2526页

作者： y. John CHEN Department of Geophy.ics School of Earth and Space Sciences Peking University

Based on the published focal mechanisms we have built the fault model of the main shocks of the 1976 Songpan earthquake sequence and calculated the coseismic Coulomb stress changes in the region. The results show that most of the aftershocks had occurred in the region where the Coulomb stresses had been increased, indicating a triggering relationship between the main shocks and the aftershocks. We also show that the first main shock (Ms = 7.2), which is a left-lateral slip event, had increased the Coulomb stresses by.5×105 Pa at the second main shock (a thrust event with Ms = 6.7). Therefore, we conclude that the first main shock had triggered the second main shock. The third main shock is also a left-lateral event, however, the triggering relationship between the third main shock and the previous two events is less obvious. General model calculations show that there is a good triggering relation- ship between adjacent left-lateral slip fault and thrust fault, but triggering between parallel slip faults is rather weak.

关键词：松潘大地震序列断层地震波

Oxy.en transfer in human carotid artery.bifurcation

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Acta Mechanica Sinica 2007年第3期23卷 305-309页

作者： Z. G. Zhang y. B. Fan X. y. Deng Dalian University.of Technology Dalian 116023 China Department of Bioengineering Beihang UniversityBeijing 100083 China

Arterial bifurcations are places where blood flow may.be disturbed and slow recirculation flow may.occur. To reveal the correlation between local oxy.en transfer and atherogenesis, a finite element method was employ.d to simulate the blood flow and the oxy.en transfer in the human carotid artery.bifurcation. Under steady.state flow conditions, the numerical simulation demonstrated a variation in local oxy.en transfer at the bifurcation, showing that the convective condition in the disturbed flow region may.produce uneven local oxy.en transfer at the blood/wall interface. The disturbed blood flow with formation of slow eddies in the carotid sinus resulted in a depression in oxy.en supply.to the arterial wall at the entry.of the sinus, which in turn may.lead to an atherogenic response of the arterial wall, and contribute to the development of atherosclerotic stenosis there.

关键词： Atherosclerosis Carotid artery Secondary.flow Mass transfer

The Credit-Risk Decision Mechanism on Fixed Loan Interest Rate with Imperfect Information

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Journal of Sy.tems Engineering and Electronics 2001年第3期12卷 20-24页

作者： Pang, S. Liu, y. Wang, y. y.o, H. Department of Mathematics Jinan University Guangzhou 510632 China

In this paper, decision mechanism of credit-risk for banks is studied when the loan interest rate is fixed with asy.metry.information in credit market. We give out the designs of rationing and non-rationing on credit risky.decision mechanism when collateral value provided by.an entrepreneur is not less than the minimum demands of the bank. It shows that under the action of the mechanism, banks could efficiently.identify.the risk size of the project. Finally. the condition of the project investigation of bank is given over again.

关键词： Classification (of information) Financial data processing Risk assessment

Exercise preconditioning alleviates ischemia-induced memory.deficits by.increasing circulating adiponectin

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Neural Regeneration Research 2025年第5期20卷 1445-1454页

作者： Meifeng Zheng Borui Zhang Sonata S y.y.u Kwok-Fai So Li Zhang Haining Ou Department of Rehabilitation Medicine Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Medicine The Fifth Clinical College of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina Key.Laboratory.of CNS Regeneration(Ministry.of Education) Guangdong-Hong Kong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong ProvinceChina Department of Rehabilitation Sciences The Hong Kong Polytechnic UniversityHong Kong Special Administrative RegionChina State Key.Laboratory.of Brain and Cognitive Science Li Ka Shing Faculty of MedicineThe University of Hong KongHong Kong Special Administrative RegionChina Center for Exercise and Brain Science School of PsychologyShanghai University of SportShanghaiChina Neuroscience and Neurorehabilitation Institute University of Health and Rehabilitation SciencesQingdaoShandong ProvinceChina

Cerebral ischemia is a major health risk that requires preventive approaches in addition to drug *** exercise enhances neurogenesis and sy.aptogenesis,and has been widely.used for functional rehabilitation after *** this study.we determined whether exercise training before disease onset can alleviate the severity.of cerebral *** also examined the role of exercise-induced circulating factors in these *** mice were subjected to 14 day. of treadmill exercise training before surgery.for middle cerebral artery.*** found that this exercise pre-conditioning strategy.effectively.attenuated brain infarct area,inhibited gliogenesis,protected sy.aptic proteins,and improved novel object and spatial memory.*** analy.is showed that circulating adiponectin play. a critical role in these preventive effects of *** activation of adiponectin receptors by.Adipo Ron mimicked the effects of exercise,while inhibiting receptor activation abolished the exercise *** summary.our results suggest a crucial role of circulating adiponectin in the effects of exercise pre-conditioning in protecting against cerebral ischemia and supporting the health benefits of exercise.

关键词： adiponectin cerebral ischemia exercise pre-conditioning hippocampus memory.function middle cerebral artery.occlusion prefrontal cortex sy.aptic proteins treadmill exercise

Quantified evaluation of particle shape effects from micro-to-macro scales for non-convex grains

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Particuology 2016年第2期14卷 23-35页

作者： y. y.ng J.F. Wang y.M. Cheng Department of Civil and Environmental Engineering The Hong Kong Polytechnic University Hong Kong China Department of Civil and Architectural Engineering City University of Hong Kong Hong Kong China

Particle shape play. an important role in both the micro and macro scales responses of a granular assem- bly. This paper presents a sy.tematic way.to interpret the shape effects of granular material during quasi-static shearing. A more suitable shape descriptor is suggested for the quantitative analy.is of the macroscale strength indexes and contact parameters for non-convex grains, with special consid- eration given to the peak state and critical state. Through a series of numerical simulations and related post-processing analy.is, particle shape is found to directly.influence the strain localisation patterns, microscale fabric distributions, microscale mobilisation indexes, and probability.distribution of the nor- malised contact normal force. Additionally. the accuracy.of the stress-force-fabric relationship can be influenced by.the average normal force and the distribution of contact vectors. Moreover, particle shape play. a more important role than do the confining pressures in determining the friction angle. Strong force chains and the dilation effect are also found to be strongly.influenced by.the high confinin~ oressure.

关键词： Quantitative analy.is Shape factor Statistical analy.is Micro-macro indexes

Homogeneous cataly.ic wet air oxidation for the treatment of textile wastewaters

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Journal of Environmental Sciences 2000年第4期12卷 410-415页

作者： Lei, L. Sun, y. Dept. of Envtl. Science and Engrg. College of Chemical Engineering Zhejiang University Hangzhou 310027 China

An extensive series of experiments was carried out in order to identify.suitable cataly.ts to boost the reaction rate of wet air oxidation of real textile wastewaters at relatively.mild temperature and pressure. Experimental results indicated that all cataly.ts tested in this investigation had shown an impressive increase in the initial COD and TOC removal rate as well as the COD and TOC removal levels in two hours reaction. Among all the cataly.ts tested, copper salts were more effective than the rest. Anions of the salt solutions also play.d a role in the cataly.ic process with nitrate ions having better effect than sulfate ions. Hence copper nitrates were more effective than copper sulfates. It was also found that a mixture of salts with different metals performed better than either of the component single salt alone.

关键词： Cataly.is Chemical oxy.en demand Copper compounds Low temperature effects Negative ions Nitrates Oxidation Pressure effects Rate constants Salts

Self-/conspecific discrimination and superparasitism strategy.in the ovicidal parasitoid Echthrodelphax fairchildii （Hy.enoptera： Dry.nidae）

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Insect Science 2014年第6期21卷 741-749页

作者： Emi Ito y.shihiro y. y.mada Insect Ecology.Laboratory Graduate School of Bioresources Mie University Tsu Mie Japan

Superparasitism in solitary.parasitoids results in fatal competition between the immature parasitoids, and consequently.only.one individual can emerge. In the semisoli- tary.ovicidal parasitoid Echthrodelphaxfairchildii （Hy.enoptera： Dry.nidae）, 2 adults can emerge under superparasitism with a short interval （〈24 h） between the first and second ovipositions. We determined the female parasitoid＇s behavioral responses under self- and conspecific superparasitism bouts with first-to-second oviposition intervals of 〈2 h. The self- and conspecific superparasitizing frequencies increased up to an oviposition interval of 0.75 h, with the former remaining lower than the latter, particularly.for oviposition intervals of _〈0.25 h, suggesting the existence of self-/conspecific discrimination. The superparasitizing frequency.plateaued for oviposition intervals of _〉0.75 h, with no dif- ference between self- and conspecific superparasitism. The ovicidal-probing frequency.did not differ under self- and conspecific superparasitism, and was usually.〈20%. The females exhibited no preference for the oviposition side （i.e., ovipositing on the side with or without the first progeny. and almost alway. laid female eggs for any.oviposition in- terval under self- and conspecific superparasitism. The sex ratio was not affected by.the ty.e of superparasitism, oviposition sides, or the occurrence of ovicidal probing. These observed results about the oviposition side, ovicidal probing, and sex ratios differed from the predictions obtained assuming that the females behave optimally. Possible reasons for the discrepancies are discussed： likely.candidates include the high cost of selecting oviposition sides and ovicidal probing, and, for the sex ratio, the low frequency.of encountering suitable hosts before superparasitism bouts.

关键词： infanticide ovicide plant hopper self-recognition sex ratio

Genome engineering technologies for targeted genetic modification in plants

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Journal of Forestry.Research 2018年第4期29卷 875-887页

作者： Wei Tang Anna y. Tang College of Arts and Science East Carolina University Greenville NC 27858 USA University.of North Carolina at Chapel Hill 101 Stadium Drive Chapel Hill NC 27514 USA

Well-established targeted technologies to engi- neer genomes such as zinc-finger nuclease-based editing （ZFN）, transcription activator-like effector nuclease-based editing （TALEN）, and clustered regularly.interspaced short palindromic repeats and associated protein sy.tem-based editing （CRISPR/Cas） are proving to advance basic and applied research in numerous plant species. Compared with sy.tems using ZFNs and TALENs, the most recently.developed CRISPR/Cas sy.tem is more efficient due to its use of an RNA-guided nuclease to generate double-strand DNA breaks. To accelerate the applications of these technologies, we provide here a detailed overview of these sy.tems, highlight the strengths and weaknesses of each, summarize research advances made with these technologies in model and crop plants, and discuss their applications in plant functional genomics. Such targeted approaches for genetically.modify.ng plants will benefit agricultural production in the future.

关键词： Double-stranded DNA break Genomeediting CRISPR sy.tem Transcription activator-likeeffector nucleases Zinc-finger nucleases

The Cauchy.problem for non-autonomous nonlinear Schr(o)dinger equations

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Science China Mathematics 2005年第4期48卷 522-538页

作者： Peter y. H. Pang Department of Mathematics

In this paper we study.the Cauchy.problem for cubic nonlinear Schr(o)dinger equation with space-and time-dependent coefficients on Rm and Tm. By.an approximation argument we prove that for suitable initial values, the... 详细信息

关键词： non-autonomous Schr(o)dinger equations, local existence, global existence.