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RAID技术在PARAGON并行计算机中的应用 被引量:2
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作者 付喜春 《石油仪器》 1998年第2期34-35,38,共3页
随着RAID技术在并行计算机系统中的广泛应用 ,现场的并行机用户迫切希望了解RAID技术的基本原理的应用方法 ,文中简述了RAID技术的产生和RAID产品的分类及特点 ,分析了PARAGON并行计算机RAID磁盘数据存储原理和数据重建方法 ,指出了RAI... 随着RAID技术在并行计算机系统中的广泛应用 ,现场的并行机用户迫切希望了解RAID技术的基本原理的应用方法 ,文中简述了RAID技术的产生和RAID产品的分类及特点 ,分析了PARAGON并行计算机RAID磁盘数据存储原理和数据重建方法 ,指出了RAID技术的发展趋势 ,为石油物探公司根据本企业的实际情况 。 展开更多
关键词 并行计算机 RAID paracon 石油勘探
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Syzygy Effects Studies Performed Simultaneously with Foucault Pendulums and Torsinds during the Solar Eclipses of 13 November 2012 and 10 May 2013 被引量:2
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作者 Dimitrie Olenici Alexander F. Pugach +5 位作者 Ilie Cosovanu Cezar Lesanu Jean-Bernard Deloly Danil Vorobyov Alexander Delets Stefan-Bogdan Olenici-Craciunescu 《International Journal of Astronomy and Astrophysics》 2014年第1期39-53,共15页
Several simultaneous observations are presented of Syzygy effects during two solar eclipses, performed with torsinds and Foucault pendulums. The experiments/measurements were of a simple nature, conducted in several o... Several simultaneous observations are presented of Syzygy effects during two solar eclipses, performed with torsinds and Foucault pendulums. The experiments/measurements were of a simple nature, conducted in several of places in Romania and Ukraine. It is shown that during Syzygy effects both the torsind and the Foucault pendulum exhibit specific reactions: the torsind’s disk is rotated, whereas the direction of the swing plane, the period, the eccentricity and the chirality of the ellipse of oscillation of the Foucault pendulum are all altered. We term all these perturbations “Syzygy effects” and found that they take place even when the devices are in locations where the eclipse is not visible and even when they are underground. An unusual time shifts?between the responses of the devices and the maximum phase of the eclipse is detected. The importance of simultaneous simple observations of astronomical phenomena using these two devices of fundamentally different types is emphasized. 展开更多
关键词 paraconical PENDULUM Antieclipse Effect Torsind
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Link between Allais Effect and General Relativity’s Residual Arc during Solar Eclipse
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作者 Russell Bagdoo 《Journal of Modern Physics》 2020年第10期1620-1638,共19页
The purpose of this article is to establish a relation between two gravitational anomalies: one that has attracted part of the scientific community, the Allais effect that occurs during solar eclipse;the other, notice... The purpose of this article is to establish a relation between two gravitational anomalies: one that has attracted part of the scientific community, the Allais effect that occurs during solar eclipse;the other, noticed but forgotten by the whole scientific community, the General Relativity’s residual arc of the curvature of rays of light in the solar gravitational field during the same eclipse. There is a systematically observed deflection about 10% larger than the theoretical value of General Relativity, which coincides with the “eclipse effect” found by Maurice Allais, thrown aside because it upsets the established truths. These corresponding anomalies were never explained by any theories and turn out to be new gravitational physics. 展开更多
关键词 Allais Effect paraconical Pendulum General Relativity Eclipse Experience PARALLAX Arc Residue Interferometry
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通过一步法构建顺式-β,γ-二取代γ-丁内酯合成(+)-Phaseolinic Acid
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作者 胡晓伶 石艳 +1 位作者 李有桂 罗云飞 《化学世界》 CAS CSCD 2020年第9期618-622,共5页
通过线性合成方法五步合成了(+)-Phaseolinic Acid,其中包含对映选择性地1,6-硼化和一步合成顺式-β,γ-二取代γ-丁内酯两个关键步骤。所有起始原料均廉价且易获得,避免了过多的合成前或合成后操作。
关键词 烯丙基硼试剂 Γ-丁内酯 仲康酸 (+)-Phaseolinic acid
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不对称高效构筑新颖螺环氧化吲哚α-甲基仲康酸酯
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作者 郭燕军 孟晨红 +2 位作者 刘学立 许丹倩 夏爱宝 《有机化学》 SCIE CAS CSCD 北大核心 2017年第10期2776-2782,共7页
关于含三个手性中心的螺环氧化吲哚γ-内酯的不对称合成鲜有报道.丙醛和氧化吲哚烯烃首先经有机催化进行不对称Michael加成反应;随后,在水/油两相条件下,Michael加成物经H_2O_2/K_2CO_3体系调节,进行α-羟基化/半缩醛化的串联反应;最后... 关于含三个手性中心的螺环氧化吲哚γ-内酯的不对称合成鲜有报道.丙醛和氧化吲哚烯烃首先经有机催化进行不对称Michael加成反应;随后,在水/油两相条件下,Michael加成物经H_2O_2/K_2CO_3体系调节,进行α-羟基化/半缩醛化的串联反应;最后经氯铬酸吡啶(PCC)氧化,得到新颖的螺环氧化吲哚α-甲基仲康酸酯化合物.该合成策略具有条件温和、收率高(91%~98%)、对映选择性优秀(87%~95%)的特点,为手性多取代的螺环氧化吲哚γ-内酯的合成提供了一种简易的新方法.所有新产物均通过核磁共振谱和高分辨质谱对其结构进行确证. 展开更多
关键词 不对称合成 螺环氧化吲哚γ-内酯 仲康酸
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