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榴辉岩相剪切带是地壳深部的反映

地震地质译丛 1995年第3期17卷 59-64页

作者： d.m.Fountain 沈稿

1.引言在增厚的大陆地壳底部附近或大陆下的地幔中,榴辉岩的形成是地质界和地球物理界日益兴趣的一种过程。当碰撞造山运动,如阿尔卑斯造山运动时,大陆地壳某些部分受迫进入地幔,这时地壳物质会转变为榴辉岩。Laubscher(1990)列举了熟... 详细信息

1.引言在增厚的大陆地壳底部附近或大陆下的地幔中,榴辉岩的形成是地质界和地球物理界日益兴趣的一种过程。当碰撞造山运动,如阿尔卑斯造山运动时,大陆地壳某些部分受迫进入地幔,这时地壳物质会转变为榴辉岩。Laubscher(1990)列举了熟知的阿尔卑斯显生宙造山带、加里东褶皱带的大陆地壳中产生的榴辉岩。其他人推测,从各种理由上说,大陆下地壳及其下伏的地幔岩石圈,是由下地壳分层出并沉入地幔中的。在这两种情况下。

关键词：榴辉岩岩相剪切带地壳深部

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冀东迁西三屯营地区早太古宙三组片麻岩的岩石地球化学及其成因

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地质论评 1993年第3期39卷 205-215页

作者：刘武旭杨振升 d.Powell m.F.Thirlwall C.L.R.Friend 长春地质学院地质系伦敦大学R.H.B.新立学院地质系牛津综合理工学院地质系

冀东迁西三屯营地区的高级变质杂岩,主要由早太古宙的三组片麻岩所组成。岩石地球化学研究表明,较早期的三屯营片麻岩为钙碱性石英闪长质岩石,除U和Th外,它不亏损不相容元素。较晚期的小关庄片麻岩和秋花峪片麻岩,分别为钙碱性石英闪长... 详细信息

冀东迁西三屯营地区的高级变质杂岩,主要由早太古宙的三组片麻岩所组成。岩石地球化学研究表明,较早期的三屯营片麻岩为钙碱性石英闪长质岩石,除U和Th外,它不亏损不相容元素。较晚期的小关庄片麻岩和秋花峪片麻岩,分别为钙碱性石英闪长质和钙碱性英云闪长—奥长花岗质岩石,二者均发生了不相容元素的亏损。三屯营地区的岩石亏损与未亏损是源岩浆所具有的特征,可能是初始地壳形成时上地幔不均匀造成的。

关键词：麻粒岩早太古宙岩石地球化学

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PNAS:科学家或成功实现利用基因疗法来治疗阿尔兹海默氏症

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现代生物医学进展 2017年第4期17卷 I0001-I0002页

作者： Loukia Katsouri[a] Yau m. Lim[a] Katrin Blondrath[a] Ioanna Eleftheriadou[b] Laura Lombardero[a] Amy m. Birch[a] Nazanin mirzaei[a] Elaine E. Irvine[c] Nicholas d. mazarakis[b], magdalena Sastre[a], [a]division of Brain Sciences Imperial College London London W12 0NN United Kingdom [b]Gene Therapy Division of Brain Sciences Imperial College London London W12 0NN United Kingdom [c]Institute for Clinical Sciences Medical Research Council Clinical Sciences Centre London W12 0NN United Kingdom

日前,来自帝国理工学院的研究人员通过利用病毒将特殊的基因片段运输到小鼠大脑中，从而成功抑制小鼠患阿尔兹海默氏症，相关研究刊登于国际杂志PNAS上，该研究或为后期开发治疗诸如阿尔兹海默氏症等神经性疾病的新型疗法提供思路。

关键词：基因疗法治疗利用科学家神经性疾病基因片段研究人员后期开发

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频率域约束条件下的最小熵反褶积

石油物探译丛 1995年第1期 10-18页

作者： m.d.Sacchi 戴成泰

这里提出一种运用最小熵准则重新建立反射系数谱的方法。此种算法(FmEd)可与传统的最小熵反褶积(mEd)以及线性规划(LP)、自回归(AR)方法相比较,就与地震道反褶积的线性算子的系数而言,mEd方法是通过使一个熵达到极大来进行。通过比较,... 详细信息

这里提出一种运用最小熵准则重新建立反射系数谱的方法。此种算法(FmEd)可与传统的最小熵反褶积(mEd)以及线性规划(LP)、自回归(AR)方法相比较,就与地震道反褶积的线性算子的系数而言,mEd方法是通过使一个熵达到极大来进行。通过比较,这里提出的算法可使与反射系数系列谱的频率损失有关的范数达到极大。此方法可简化为一种非线性算法,即能进行有限频带数据的反褶积,避免了线性算子的固有限制。这里提出的方法通过各种合成例子来说明。为检查此种算法的正确性,还运用了野外数据。结果表明,此种方法是处理有限频带数据行之有效的方式。 FmEd和LP方法的原理相类似。在频率约束条件下,这两种方法都是寻找一个特殊范数的极值。在LP方法中,线性规划问题采用了十分昂贵的单纯形法来解决。FmEd法在每次迭代中仅用了两次快速富氏变换,减少了反演计算成本。

关键词：最小熵反褶积频率域约束地震勘探反射波

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铀资源估算方法及其可靠性

世界核地质科学 1984年第1期 16-22页

作者： d.m.Blanchfield 王从周

早在1948年大江克欣办事处就开始对未发现的铀资源进行估算。早期的估算工作只作为政府与采矿公司谈判租借政府控制土地的依据。估算的方法是根据地质类比的原则:假设一个地区已知有一定规模和品位的矿床,那么

关键词：主观概率平均品位边界品位铀资源累积分布函数随机变量概率论资源总量潜在资源水产资源评价方法基建费用费用模型经济模型直方图估算方法

A review of the mechanical integrity and electrochemical performance of flexible lithium-ion batteries

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Nano Research 2023年第12期16卷 12962-12982页

作者： Ahmad Shokrieh Amir Hossein mirzaei Lijuan mao mahmood.m.Shokrieh Zhixiang Wei CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and TechnologyBeijing 100190China Composites Research Laboratory Center of Excellence in Experimental Solid Mechanics and DynamicsSchool of Mechanical EngineeringIran University of Science and TechnologyTehran 16846-13114Iran University of Chinese Acad.my of Sciences Beijing 100049China

In the past two decades,various research works have been conducted in the field of flexible electronic devices(FEds).Researchers have focused their efforts on solving the existing challenges in the electronic,electrochemical,and.mechanical behaviors of *** importance of flexible lithium-ion batteries(FLIBs)in the area of FEds is evident;however,less attention has been paid to the mechanical behavior of FLIBs in comparison with the material and electrochemical *** present paper reviewed the research works in the FLIBs,focusing on their mechanical integrity and electrochemical ***,an introduction to FLIBs was presented,and the previous review papers published in this field were briefly ***,a detailed review of the available electrochemical and.mechanical research works on FLIBs was ***,the mechanical testing methods(tensile,compressive,indentation,fatigue,and adhesion)for the characterization of FLIBs’components,the research works on the simulation and.modeling of the mechanical behavior of FLIBs,and a summary of the present situation and the future trend of research in this field were reviewed and presented.

关键词： flexible devices electrochemical performance mechanical integrity testing methods simulation and.modeling.

Combined Effect of a Catalytic Reduction device with Waste Frying Oil-Based Biodiesel on NOx Emissions of diesel Engines

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modern mechanical Engineering 2022年第3期12卷 63-73页

作者： Samson K. Fasogbon Vincent N. Ugwah Olaleye m. Amoo Patrick Ajaero Ogagaoghene d. Emma-Egoro department of mechanical Engineering University of Ibadan Ibadan Nigeria Centre for Petroleum Energy Economics and Law University of Ibadan Ibadan Nigeria department of Agricultural and Bioresource Engineering Federal University of Technology Owerri Imo State Nigeria department of Systems Engineering Stevens Institute of Technology Hoboken USA department of Chemical Engineering Landmark University Kwara State Nigeria

Internal combustion engines with application in automobiles and other relevant industries constitute significant environmental pollution via the release of toxic exhaust gasses like carbon monoxide (CO), hydrocarbons (HC), particulate matter (Pm), and nitrogen oxide (NOx). Engine researchers and.manufacturers are challenged to develop external and internal measures to ensure environmentally friendly solutions to accommodate and conform to the growing list of emission standards. Therefore, this work presents an experimental investigation of the NOx emission profile of a diesel engine that is fuelled and fitted with waste frying oil-based biodiesel and catalytic converter. Using a single-cylinder, four-stroke air-cooled CI engine at a constant speed of 1900 rpm and different loadings of 25%, 50%, 75%, and 100%;fitted with a catalytic converter at the exhaust outlet of the engine and linked to a dynamometer and a gas analyser, an experiment was conducted at biodiesel/diesel volume blends of B0 (0/10), B5 (5/95), B20 (20/80), B30 (30/70), B70 (70/30), B100 (100/0);and 30% concentration (v/v), 0.5 litre/hr flow rate of aqueous urea from the catalytic converter. The results show an increasing NOx emission as the biodiesel component increased in the blend. The catalytic converter showed a downward NOx reduction with a significant 68% reduction in efficiency at high exhaust gas temperatures. It is concluded that the combined utilisation of waste frying oil-based biodiesel and the catalytic converter yields substantial NOx emission reduction.

关键词： Catalytic Converter Waste Frying Oil Biodiesel NOx Emission diesel Engines

Evaluation of the Impact of Presence Lighting and digital Speed Limit Trailers on Interstate Speeds in Indiana Work Zones

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Journal of Transportation Technologies 2021年第2期11卷 157-167页

作者： Rahul Suryakant Sakhare Jairaj C. desai Jijo K. mathew John d. mcGregor darcy m. Bullock Purdue University West Lafayette USA Indiana department of Transportation Indianapolis USA

Work zone safety continues to be one of the important focus areas for transportation agencies. Previous studies have identified that vehicle speed and lighting conditions are significant risk factors impacting work zone safety. This study evaluated the impact of the use of presence lighting and digital speed limit trailers on nighttime motorist speeds using commercially available connected vehicle speed data. Geospatial analysis was conducted on over 500,000 connected vehicle records to linear reference nearly 18,000 records from 195 unique trajectories to study section during the study period of 2 days. Results showed that median speeds reduced by 4 to 13 mph from 11PM to 7AM during the deployment of presence lighting and speed limit trailers compared to base conditions. A Kolmogorov-Smirnov (KS) statistical test comparing 105 vehicles traveling through the construction zone with presence lighting and speed limit trailers with a group of 90 vehicles during base condition indicated the speeds during the deployment of presence lighting and speed limit trailers were lower than the base condition. Also, increased compliance with the 55 mph speed limit was observed when the presence lighting and digital speed limit trailers were deployed. However, there were two hours (3AM to 5AM) where speeds increased by 0 - mily:Verdana;">4 mph, perhaps due to the low volume at that hour. The encouraging results support the further deployment of presence lighting and speed limit trailers in nighttime construction zones for reducing vehicle speeds. Those future deployments should be monitored w

关键词： Work Zone Safety Probe data Work Zone Practices Speed Study Construction Zone Speed Reduction

Conquering China＇s Unbalanced and Inadequate development： macroeconomic Outlook, Policy Simulations, and Reform Implementation--A Summary of Annual SUFE macroeconomic Report （2017-2018）

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Frontiers of Economics in China-Selected Publications from Chinese Universities 2018年第2期13卷 147-170页

作者： Kevin X. d. Huang Lei Ning Guoqiang Tian department of Economics Vanderbilt University Nashville TN 37235 USA Institute for Advanced Research Shanghai University of Finance and Economics Shanghai 200433 China School of Economics and Institute for Advanced Research Shanghai University of Finance and Economics Shanghai 200433 China department of Economics Texas A&M University College Station TX 77843 USA

Leaving year 2017 China＇s macroeconomy is continuously characterized by unbalanced and inadequate development. Whereas some aggregate indicators have shown improvement over the year, the cumulative growth rates in consumption and fixed asset investment have continued theirdownward trajectories. Worsening income inequality and resource misallocations, both between secondary and tertiary industries, and within the latter, pose serious challenges, let alone the systemic risk associated with the flourishing shadow banking system, rapid credit growth and debt overhang that weigh on the Chinese economy like the Sword of d.mocles. This summary report highlights both the status quo and the consequences of the unbalanced and inadequate development embodied in China＇s persistently distorted economic structure, and the role of deepening reforms of the institutions and governance in resolving the problems. Our analyses based on IAR-Cmm model provide a unified framework for addressing China＇s short-, medium-, and long-term issues ir~ an internally coherent manner. Looking into year 2018, our benchmark projection of real GdP growth rate is 6.7% （6.41% using more reliable rather than the official data）. Alternative scenario analyses and policy simulations are conducted to reflect various aspects of the economic challenges in the short to long runs. Through the lens of these analyses we conclude that rule-of-law based and.market-oriented structural reforms should continue to hold a center stage in China＇s transition from a phase of high-speed but unbalanced growth, to a stage of balanced and adequate high-quality development.

关键词： unbalanced and inadequate development macroeconomic outlook alternative scenario policy simulation systemic risk reform