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过套管井确定裂缝和应力方向：实例研究

测井与射孔 2004年第2期7卷 10-14页

作者： Walsh-h.simon 朱静王春宁不详辽河油田钻采院辽河油田测井公司

裂缝及应力方向的确定可以为储层特性分析和油田开发提供所必须的重要资料。传统方法仅限于裸眼井中的测量，包括从井径资料中识别突变、井眼成像测井及定向取心等。近几年，正交偶极子声波测井，由于它可以测量声波的各向异性，已经应... 详细信息

裂缝及应力方向的确定可以为储层特性分析和油田开发提供所必须的重要资料。传统方法仅限于裸眼井中的测量，包括从井径资料中识别突变、井眼成像测井及定向取心等。近几年，正交偶极子声波测井，由于它可以测量声波的各向异性，已经应用在裸眼井的评价中。然而，现在对在套管井中确定裂缝和应力方向的要求越来越多。在上述方法中，只有正交偶极子声波测井有可能在裸眼井和套管井中进行该种测试。可以在套管井中测量裂缝和应力方向的另一种方法是垂直地震剖面测井(VSP)。传统方法是利用相互正交的偏振横波发射源，记录横波垂直地震剖面，然后测量裂缝层段的横波劈裂效应。然而，通过使用P-波源的转换横波也可以观察到同样的效应。这里存在两种的情况：第一种情况，利用距井足够远处的波源可以采集到一个偏移VSP，以确保P波向S波的转换。在第二种情况下，可以采集到绕行的VSP，其实质就是，当声源位于以井为中心，半径大致相等的地方时，会在多个方位采集到微偏移VSP。通过分析适当的因素，例如：根据不同的方位上的能量的横向分量对径向分量的分析，可以测量到裂缝方向。在科罗拉多州Rangely油田的套管井中已经对各种不同技术进行了对比。方法有：与连续陀螺仪一起记录的交叉偶极子声波测井曲线、利用固定陀螺仪获得的偏移垂直地震剖面、零偏移垂直地震剖面以及利用固定陀螺仪获得的绕行垂直地震剖面。

关键词：套管裂缝应力方向声波测井技术横波劈裂效应

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欧洲大型四辊铝板轧机

国外轻金属 1966年第6期 36-40页

作者： K.-h.simon 凌朝杰

1.概述按照美国的估计,到2000年,铝的消耗量大约将增加到8倍。这表明,铝材料对将来有着很大意义。为了迎合这种发展趋势,凯撒铝有限公司建立了一家设有铸造车间以及用以生产板材、带材和挤压型材的轧制和挤压设备的现代化铝半制品工厂... 详细信息

1.概述按照美国的估计,到2000年,铝的消耗量大约将增加到8倍。这表明,铝材料对将来有着很大意义。为了迎合这种发展趋势,凯撒铝有限公司建立了一家设有铸造车间以及用以生产板材、带材和挤压型材的轧制和挤压设备的现代化铝半制品工厂。这家新工厂在科不林

关键词：均热炉切头剪刀带坯刀剪钢坯剪切机剪床锻压设备直流电机直流电动机辊道滑座成材板材导卫装置卫板出料端液压缸油缸液压执行元件蚁道推料机机座机架欧洲

Revisit to Two-Proton Radioactivity of 19Mg and Observation of Two-Proton Decay of 30Ar

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原子核物理评论 2016年第2期33卷 197-202页

作者：徐晓栋 I.Mukha L.Acosta E.Casarejos A.A.Ciemny W.Dominik J.Duénas-Díaz V.Dunin J.M.Espino A.Estradé F.Farinon h.Geissel A.Fomichev T.A.Golubkova A.Gorshkov L.V.Grigorenko Z.Janas G.Kamiński O.Kiselev R.Knbel S.Krupko M.Kuich Yu.A.Litvinov G.Marquinez-Dur'an I.Martel C.Mazzocchi C.Nociforo A.K.Ord'uz M.Pfützner S.Pietri M.Pomorski A.Prochazka S.Rymzhanova A.M.S'anchez-Benítez C.Scheidenberger P.Sharov h.simon B.Sitar R.Slepnev M.Stanoiu P.Strmen I.Szarka M.Takechi Y.K.Tanaka h.Weick M.Winkler J.S.Winfield Ⅱ.Physikalisches Institut Justus-Liebig-Universitt Gie?en GSI helmholtzzentrum für Schwerionenforschung Gmb h School of Physics and Nuclear Energy Engineering Beihang University National Research Centre "Kurchatov Institute" INFN Laboratori Nazionali del Sud Instituto de Física Universidad Nacional Autónoma de México University of Vigo Faculty of Physics University of Warsaw Department of Applied Physics University of Huelva Veksler and Baldin Laboratory of high Energy Physics Department of Atomic Molecular and Nuclear PhysicsUniversity of Seville University of Edinburgh Flerov Laboratory of Nuclear Reactions Advanced Educational and Scientific Center Moscow State University FSBI "SSC RF ITEP"of NRC "Kurchatov Institute" National Research Nuclear University "MEPh I" Institute of Nuclear Physics PAN Faculty of Physics Warsaw University of Technology Faculty of Mathematics and Physics Comenius University IFIN-hh University of Tokyo

An experiment aimed to investigate the two-proton(2p) decay of the previously unknown nucleus ^(30)Ar was performed at GSI. By tracking the decay products in-flight with silicon micro-strip detectors, the 2p decays of ^(30)Ar were observed for the first time. For the calibration purpose, 2p decays of ^(19)Mg were also remeasured by tracking the coincident ^(17)Ne+p+p trajectories. By comparing the measured angular p-17 Ne correlations with those obtained from the corresponding Monte Carlo simulations,the simultaneous 2p decay of ^(19)Mg ground state and the sequential 2p emission of several known excited states of ^(19)Mg were confirmed. One new excited state in ^(19)Mg and two new excited states in ^(18)Na were observed.

关键词： proton drip line decay by proton emission nuclear energy level

Targeting EGFR exon 20 insertion mutations in non-small cell lung cancer

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Signal Transduction and Targeted Therapy 2019年第1期4卷 592-601页

作者： simon Vyse Paul h.huang Division of Molecular Pathology The Institute of Cancer ResearchLondon SW36JBUnited Kingdom

Inframe insertions of three or more base pairs in exon 20 of the epidermal growth factor receptor(EGFR)gene were among the first EGFR mutations to be identified as oncogenic drivers in non-small cell lung cancer(NSCLC).however,unlike the classical EGFR L858R point mutation or exon 19 deletions,which represent the majority of EGFR mutations in NSCLC,low frequency EGFR exon 20 insertion mutations are associated with de novo resistance to targeted EGFR inhibitors and correlate with a poor patient ***,we review the developments over the last 5 years in which pre-clinical studies,including elucidation of the crystal structure of an EGFR exon 20 insertion mutant kinase,have revealed a unique mechanism of kinase activation and steric conformation that define the lack of response of these EGFR mutations to clinically approved EGFR *** recent development of several novel small molecule compounds that selectively inhibit EGFR exon 20 insertions holds promise for future therapeutic options that will be effective for patients with this molecular subtype of NSCLC.

关键词： insertion lung cancer

Roles of Financial Innovation and Information Technology:Lessons from US Sub-prime Mortgage Crisis and Its Implications for China

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Chinese Geographical Science 2012年第3期22卷 343-355页

作者： James h LENZER JR simon Xiaobin ZhAO International Center for China Development Studies & Department of Geography Faculty of Social Sciencesthe University of Hong KongHong KongChina

The mortgage loan has evolved from a local lending instrument into a major global security and its role is unparallel to other financial instruments in the process of financial globalization. This paper explains how technology and financial innovation transformed the mortgage loan from a local security into a premier global security traded worldwide. It examines the fundamental flaws of this process and why it does not work in regards to mortgage lending and the re-securitization products that were created through financial innovation. The findings show that regulation was unable to keep pace with financial innovation, which created an environment where actors in the financial service sector were able to behave geographically irresponsibly by using information asymmetries to their advantage by par- ticipating in moral hazard activities and engaging in other immoral and unethical business practices that were centered around localized geography, which ultimately contributed to the global financial crisis. It also examines the roll of financial innovation in regard to the Lehman Brothers Mini-Bond in hung and its role as a driving force behind China＇s newly emerging shadow banking sector. It concludes with a policy recommendation and its implication for China＇s continued economic development.

关键词： shadow banking US sub-prime mortgage crisis financial tsunami global financial crisis wealth man- agement vehicle China asset bubble

Automated measurement of moving grains on bed deposits

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International Journal of Sediment Research 2011年第3期26卷 304-317页

作者： Amir h.N.ChEGINI simon TAIT Lecturer of Civil Engineering Department Faculty of EngineeringUniversity of GuilanMain CampusI.R.of Iran School of Engineering Design and TechnologyUniversity of BradfordBradfordBD7 1DPUK.

The performance of gravel bedload predictor equations is particularly poor.A key reason for this situation is the current poor understanding of the physical mechanisms that are involved in the entrainment of grains from water-worked sediment *** has been caused,in part,by a lack of detailed data on the behaviour of moving sediment *** this study,observations of the entrainment, transport and deposition of many particles from a gravel bed has been collected and studied using an image-based *** system was used to measure the motion of hundreds of gravel particles moving as *** paper describes the development of the image-based system and the data processing methods used to provide the automated measurement of particle *** system was adapted from commercially available PIV equipment and was configured to obtain simultaneously data for the analysis of the moving grains and the near-bed flow *** techniques developed are relatively sensitive to sediment colour and shape by using related image processing algorithms and so could be applied to natural gravel *** results(image data)obtained from the techniques developed are amended in a program by using two functions(commands)of image processing called "Label2RGB",and "RegionProps" which distinguish the colour and shape of moving sediment grains *** data processing provided information that identified individual grain entrainments,*** accurately traced the motion of some,but not all,*** show that the system was able to estimate grain entrainment rates and indicate locations of preferential entrainment and deposition from data on hundreds of individual moving grains.

关键词： Uniform flow Bed load Sediment transport Measurement Image processing

Risk-based method to secure power systems against cyberphysical faults with cascading impacts: a system protection scheme application

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Journal of Modern Power Systems and Clean Energy 2018年第5期6卷 930-943页

作者： Jose Luis CALVO simon h.TINDEMANS Goran STRBAC Department of Electrical and Electronic Engineering Imperial College London Department of Electrical Sustainable Energy Delft University of Technology

The utilization levels of the transmission network can be enhanced by the use of automated protection schemes that rapidly respond to disturbances. however,such corrective systems may suffer from malfunctions that have the potential to exacerbate the impact of the disturbance. This paper addresses the challenge of jointly optimizing the dispatch of generators and protection settings in this context. This requires a holistic assessment of the cyber(protection logic) and physical(network) systems,considering the failures in each part and their *** protection schemes are used as a prototypical example of such a system. An iterative optimization method is proposed that relies on power system response simulations in order to perform detailed impact assessments and compare candidate solutions. The candidate solutions are generated on the basis of a security-constrained dispatch that also secures the system against a set of cyber failure modes. A case study is developed for a generation rejection scheme on the IEEE reliability testsystem(RTS): candidate solutions are produced based on a mixed integer linear programming optimisation model, and loss-of-load costs are computed using a basic cascading outage algorithm. It is shown that the partial security approach is able to identify solutions that provide a good balance of operational costs and loss-of-load risks, both in a fixed dispatch and variable dispatch context.

关键词： Power system operations Cyber-physical systems Reliability System protection schemes Riskaware dispatch

The Chengdu system for recurrent hepatocellular carcinoma: A step in the right direction

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hepatobiliary Surgery and Nutrition 2019年第3期8卷 298-300页

作者： simon Erridge Mikael h.Sodergren Department of Surgery and Cancer Imperial College LondonLondonUK

Liver cancer is the fourth leading cause of cancer-related death *** carcinoma(hCC),the most prevalent cause of primary liver cancer,is observed highest in the Far East,South-Eastern Asia and East Africa(1).In most endemic regions this is secondary to the prevalence of specific risk factors including chronic hepatitis B virus(hBV)infection,hepatitis C virus(hCV)infection and aflatoxin-exposure(1,2).The development of hBV vaccination and programmes to reduce hBV transmission has reduced the risk of hCC in high-risk Asian countries(1).Global incidence of hCC however continues to rise and major contributory factors to this are alcohol misuse and the obesity epidemic,resulting in non-alcoholic fatty liver disease,in Western nations(1,2).

关键词： Liver Eastern alcohol

Large-scale transportation and storage of wood pellets:Investigation of the change in physical properties

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Particuology 2021年第4期19卷 146-156页

作者： hamid Gilvari Coen h.h.van Battum simon A.van Dijk Wiebren de Jong Dingena L.Schott Section of Transport Engineering and Logistics Department of Maritime and Transport TechnologyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands Chemical Services Uniper Benelux NVThe Netherlands Section of Large Scale Energy Storage Department of Process&EnergyFaculty of MechanicalMaritime and Materials EngineeringDelft University of TechnologyThe Netherlands

The change in physical properties of wood pellets,with a focus on particle size distributions due to pellet breakage and attrition,was studied in a large-scale(∼450 ton/h)transportation *** locations with a high probability of breakage through the whole transportation system were chosen and sampled to study the effect of transportation system design and operation on the mechanical properties of *** density,mechanical durability,moisture content,and particle size distribution of pellets were characterized for each *** of variance showed that there were significant differences between the percentages of small particles(he samples taken at different locations,especially at one with a vertical free fall of 7.8 *** average,this relatively long drop increased the proportion of particleshe samples from 8.73%to 14.09%,and that of particleshe measurements showed a wide deviation in the mechanical durability values,between a minimum of 90.8%and a maximum of 98.7%,which were not correlated to the sampling points but related to pellet *** can be concluded that pellet transportation systems require more dedicated design strategies to prevent breakage and attrition.

关键词： Wood pellets Large-scale transportation Durability Fines and dust Breakage Mechanical degradation