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两千四百多年前,孔老二妄图挽救行将灭亡的奴隶制,为奴隶主贵族统治永恒化制造理论依据,抛出了“生而知之”和“唯上智与下愚不移”的反动谬论,竭力吹捧奴隶主是“生而知之”的“上智”、“至贵”,而广大奴隶是天生的“下愚”、“小人”,只能俯首贴耳地听任奴隶主贵族的宰割;他还恬不知耻地把自己打扮成是“天生德于予”的“圣人”。叛徒、卖国贼林彪,为了复辟资本主义,以达到他建立林家父子法西斯王朝的罪恶目的,完全继承了孔老二的衣钵,把唯心主义的“天才论”作为他搞“克己复礼”的理论纲领。林彪,这个不读书、不看报,什么学问也没有的大党阀、大军阀,狂吠什么:“不承认天才,这不是马克思主义”,他和孔老二一样自称“天才”、自比“天马”,厚颜无耻地吹嘘自己是“脑袋长得好,和别人的不一样、特别灵。”的“超人”。反过来,他恶毒诬蔑劳动人民想的是“怎样搞钱,怎样搞米”,说的是“恭喜发财”的“愚昧无知”的“群氓”、“阿斗”。这完全是颠倒历史,混淆黑白的一派胡言乱语。 相似文献
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钻井中首波的共振与衰减 总被引：6，自引：2，他引：4
本文从P波首波的严格割线积分出发,首次给出了揭示其共振与衰减特性的渐近展开式,通过数值计算,对这些公式进行了检验,证明它们与严格解符合的相当好.解析的和数值结果一致表明:首波具有共振特性,频谱是连续的;振幅随源距z按1/z规律衰减;各共振峰幅度随岩石泊松比v的增大按[v/（1-v）]2规律增大.时域计算表明,所谓“滤波效应”正是首波共振激发特性的反映,传播过程中不频散. 相似文献
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地震是一种自然现象,是地球自身不停顿地运动的结果。认识和掌握地震及其规律问题,一直存在着两种不同的世界观的斗争。 能不能“知天”?孔丘、孟轲之流大力宣扬“天命论”鼓吹“天是有人格有意志的神”,胡说什么“死生有命,富贵在天”;老聃、庄周之辈则大谈“至人无为”,什么“死生、存亡、穷达、贫富……是事之变,命之行也”。总之,他们都是为了维护奴隶主的统治,让奴隶们永远受压迫和剥削。因此,他们就欺骗人民,愚昧人民,他们利用人们当时对“天”认识的局限性, 相似文献
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最近,一些西方资产阶级学者提出“九星成线”灾难说:当太阳系九颗行星在太阳同侧排成一线时,将会骤然“刹住”地球自转,引起灾难性的大地震。本文对这种错误观点进行了批判。 根据中国二千七百多年历史地震的丰富记载,七级以上的大地震共发生过一百二十多次,同期“九星成线”有十五次,可这百余次大震没有一次发生在“九星成线”的年份上。迄今为止,世界上最大的一次地震,既与“九星成线”无关,也并未“摧毁地球”。对地球引力的主要影响来自太阳和月球,其他行星影响总和的最大值,不过是月球的万分之一而已。地震是地球内部的一种矛盾运动,不能把行星间引力对某些地震的影响片面夸大加以绝对化。“九星成线”灾难说,缺乏事实根据,在科学上是说不通的。 这种错误观点的提出并非偶然,科学技术的发展总是为一定的政治路线服务的。早在我国西汉末年（公元一世纪初年）,孔孟之徒曾对这同一种自然现象宣扬过“五星联珠”吉祥说,妄图挽救反动奴隶制的崩溃。同儒家曲解自然现象的下场一样,西方资产阶级宣扬灾难说,欺骗人民,以掩盖资本主义世界的政治经济危机,也必然是完全徒劳的。 相似文献
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本文从勘探地球物理的实际需要和特点出发,探讨了重磁位场解析延拓的数学提法,给出一套较为实用的数值解法。所论述的原理、方法适用于三维空间任意起伏地形条件下的重磁位场曲化平计算,可做“上延拓”计算,也可做“下延拓”计算。在一个比较复杂的理论模型上所做的方法检验表明“上延”和“下延”都取得了较好的效果。 相似文献
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西格尔（H.O.Seigel）从理论计算得到导电颗粒含量为25％的极化球体有最大异常,因此认为:激发极化法只宜于寻找中等浸染程度的矿体,对于含量很高的矿体或良导致密型矿体,激发极化法是不行的。据称这种“饱和效应”的理论得到野外结果的证实。 本文根据我国激发极化法在良导致密型矿体上大都能获得明显视极化率异常的事实,说明西格尔的“饱和效应”理论与事实不符。本文认为良导致密型极化体不存在“饱和效应”问题,激发极化法对它们的勘探也是有效的。可能由于西格尔把低含量理论公式,不计条件地推导到高含量、甚至良导矿体,因此他的结论是错误的。本文最后讨论了电阻率因素对浸染型球体视极化率强度的影响。 相似文献
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本文以理论公式证明地磁测深的电磁阻抗不可能在某一“穿透频率”附近发生不连续的突变。利用“穿透频率”的概念定出的佘山地区地幔电导率是不妥的。 相似文献
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根据先前相似模型实验的结果 ,在板块边界驱动下 ,沿岩石圈下层 (含下地壳和岩石圈地幔 )传播的塑性流动波包括“快波”和“慢波” ,二者均属于黏性重力波 ,并分别由主波和辅波叠加而成。“快波”以 10 0 ～ 10 2 km/a量级的速度传播 ,已为塑性流动波控制下地震迁移的研究所证实。文中根据 7级以上强震的条带状分布图像 ,证明在喜马拉雅弧驱动下还存在着波速仅为 10 0 ～ 10 1m/a量级的“慢波” ,其中对 7级以上强震起控制作用的主要是“慢波”的辅波 ,其平均波长为 4 45km ,波速为 0 81～ 2 80m/a ,周期为 0 .16～ 0 .5 5Ma。“慢波”的边界起波时间距今约 1.34～ 4 .6 6Ma ,相当于上新世中期至早更新世中期 ,与喜马拉雅构造运动的主要活跃期 (幕 )之一相吻合。以喜马拉雅弧西段和东段为波源所形成的2个“慢波”系统的波峰带相互重叠 ,为 7级以上强震的发生提供了必要的能量背景 相似文献
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岩石圈塑性流动波的物理模拟实验表明 ,在板块边界驱动下 ,模型中除了产生“快波”(波速量级大致相当于原型的 10 0 ～ 10 2 km/a)外 ,还存在着相当于原型波速量级为 10 - 1～ 10 0 m/a的“慢波”。“慢波”也可分解为主波和辅波 ,主波类似于涌波 (孤立波 ) ,辅波则以波群的方式传播 ,二者均系粘性重力波。板块边界的驱动作用通过不同波速的多重塑性流动波向板内传播 ,控制地震能量背景的起伏振荡 ,并导致缓慢构造运动的韵律性变化 相似文献
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In this work we use ion and magnetic field data from the AMPTE-UKS mission to study the characteristics of low frequency (r p) waves observed upstream of the Earths bow shock. We test the application of various plasma-field correlations and magnetic ratios derived from linear Vlasov theory to identify the modes in this region. We evaluate (for a parameter space consistent with the ion foreshock) the Alfvén ratio, the parallel compressibility, the crosshelicity, the noncoplanar ratio, the magnetic compression and the polarization for the two kinetic instabilities that can be generated in the foreshock by the interaction of hot diffuse ions with the solar wind: the left-hand resonant and the right-hand resonant ion beam instabilities. Comparison of these quantities with the observed plasma-field correlations and various magnetic properties of the waves observed during 10 intervals on 30 October 1984, where the waves are associated with diffuse ions, allows us to identify regions with Alfvénic waves and regions where the predominant mode is the right-hand resonant instability. In all the cases the waves are transverse, propagating at angles 33° and are elliptically polarized. Our results suggest that while the observed Alfvén waves are generated locally by hot diffuse ions, the right-handed waves may result from the superposition of waves generated by two different types of beam distribution (i.e. cold beam and diffuse ions). Even when there was good agreement between the values of observed transport ratios and the values given by the theory, some discrepancies were found. This shows that the observed waves are different from the theoretical modes and that mode identification based only on polarization quantities does not give a complete picture of the waves characteristics and can lead to mode identification of waves whose polarization may agree with theoretical predictions even when other properties can diverge from those of the theoretical modes. 相似文献
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A wide-angle reflection/refraction seismic line obtained through Sino-French joint research near the Bangung-Nujiang Suture in Tibet [1] yielded crustal velocity estimates for both P and S waves. AVp/Vs ratio of 1.65 was derived fo waves propagating in the upper ( < 25 km) crust. According to the high-pressure, high-temperature velocity measurements of Kern [2] and others, such a ratio implies the presence of quartz-rich rocks, e.g., granites and granitic gneisses, in the upper Tibetan crust. Because of the high geothermal gradient in Tibet ( > 50°C/km near the surface), a shallow low-velocity zone is expected to form in a granitic upper crust for both P and S waves. A two-dimensional ray-tracing study indicates that the observed first P and S waves [1] can be interpreted as diving waves above a low-velocity zone where a positive gradient exists. The low-velocity zone commences at a depth of 10 km and extends possibly to 20 km or deeper. 相似文献
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本文研究了0.1~10 Hz频率范围内的ULF波从磁层到地面的传播,得到了解析解,分析了电离层Alfven谐振器、磁倾角、电离层电导率、以及波频率对地面观测到的地磁信号的影响.数值结果表明:在磁层中剪切波在竖直方向有明显的谐振结构;地面观测到的信号在IAR谐振频率出现极大值,其谐振频率随磁倾角的增大而增大;电离层电导率的变化可以改变IAR的谐振频率,并能改变波的透射,从而影响地面地磁信号的频谱. 相似文献
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Gui-jin Yao Ke-xie Wang Jun Ma Bao-jun Yang Hai-rong Zhang 《Geophysical Prospecting》2007,55(4):561-570
We focus on the theoretical analysis of the resonance phenomena and the geometric attenuation behaviour of critical refracted shear waves propagating along a fluid‐filled borehole. Using integration by parts, we asymptotically expand the vertical branch‐cut integral of shear waves in an infinite series related to each order of the derivative of the response function of the formation. It is proved that the vertical branch‐cut integral of shear waves at large offsets consists mainly of the contribution of the second asymptotic series, which is related to the first derivative of the response function of the formation at the shear branch point. Using the asymptotic expansion, we develop a simplified amplitude expression for shear waves, and the resonant frequency formula. The validity of the resonance frequencies obtained by the resonant frequency formula is verified numerically by comparison with the corresponding frequencies of the numerical integral results. We also give a rational explanation for the phenomenon of two peaks appearing within each resonant peak zone: i.e. that these are the contributions of the constructive interference of the shear waves and the mode poles. 相似文献
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Starting out with two interacting Rossby-Haurwitz waves, the generation of zonal flow is discussed. It is shown that zonal flow cannot be generated by first or second order interactions between two such waves, unless they are exchanging energy with a third wave within a resonant triad. The generation of zonal flow at second order through resonant triad interactions is subsequently established and studied. 相似文献
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R. L. Walterscheid 《Pure and Applied Geophysics》1980,118(1):239-265
This paper reviews the theory and observations of some traveling planetary waves in the stratosphere. Two categories of waves which appear prominently in the literature are discussed: westward propagating waves of periods in the range 3–7 days (the 5-day wave) and in the range 10–20 days (the 16-day wave). Although the observations seem to indicate that these waves are waves of the Rossby type (planetary waves), the evidence is less clear regarding (1) the question of whether these waves are forced internal waves or free (resonant) external waves, and (2) the identification of the observed waves with specific theoretical waves of the Rossby type. When recent observations are compared with theory, the evidence seems to favor the notion that the 5-day and 16-day waves of longitudinal wave number 1 may be identified, respectively, with the gravest and next gravest symmetric free Rossby modes. However, the observational evidence seems to be less clear regarding the nature of the 16-day wave than the 5-day wave. 相似文献
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The observation of the fault-zone trapped waves was conducted using a seismic line with dense receivers across surface rupture zone of the M=8.1 Kunlun Mountain earthquake. The fault zone trapped waves were separated from seismograms by numerical filtering and spectral analyzing. The results show that: a) Both explosion and earthquake sources can excite fault-zone trapped waves, as long as they locate in or near the fault zone; b) Most energy of the fault-zone trapped waves concentrates in the fault zone and the amplitudes strongly decay with the distance from observation point to the fault zone; c) Dominant frequencies of the fault-zone trapped waves are related to the width of the fault zone and the velocity of the media in it. The wider the fault zone or the lower the velocity is, the lower the dominant frequencies are; d) For fault zone trapped waves, there exist dispersions; e) Based on the fault zone trapped waves observed in Kunlun Mountain Pass region, the width of the rupture plane is deduced to be about 300 m and is greater than that on the surface. 相似文献
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Simon Gershanik 《Pure and Applied Geophysics》1967,67(1):27-32
Summary The expression of the travel timet of bodily waves propagating in a layered earth, as a function of the emerging angle is obtained, to complement the one given in a previous paper [1]2) of the epicentral distance . The waves velocityV is again assumed to vary linearly with the depth. Having both expressions it becomes possible to construct a theoretical functiont=t() and to explore the true values ofV by adjusting it to the experimental travel time tables. 相似文献
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Serkan Sayin Fatih Ozcan Mustafa Yilmaz Ali Tor Shahabuddin Memon Yunus Cengeloglu 《洁净——土壤、空气、水》2010,38(7):639-648
In this study, 5,17‐bis‐[(4‐benzylpiperidine)methyl]‐25,26,27,28‐tetrahydroxy‐calix[4]arene ( 3 ) has been prepared by the treatment of calix[4]arene with a secondary amine (4‐benzylpiperidine) and formaldehyde by means of Mannich reaction. The prepared Mannich base ( 3 ) has been grafted onto [3‐(2,3‐epoxypropoxy)‐propyl]‐trimethoxysilane‐modified Fe3O4 magnetite nanoparticles (EPPTMS‐MN) in order to obtain 5,17‐bis‐[(4‐benzylpiperidine)methyl]‐25,26,27,28‐tetrahydroxy calix[4]arene‐grafted EPPTMS‐MN (BP‐calix[4]arene‐grafted Fe3O4). All new compounds were characterized by a combination of FTIR and 1H‐NMR analyses. The morphology of the magnetic nanoparticles was examined by transmission electron microscopy. Moreover, the studies regarding the removal of arsenate and dichromate ions from the aqueous solutions were also carried out by using 5,17‐bis‐[(4‐benzylpiperidine)methyl]‐25,26,27,28‐tetrahydroxy‐calix[4]arene in liquid–liquid extraction and BP‐calix[4]arene‐grafted Fe3O4 ( 4 ) in solid–liquid extraction experiments. The extraction results indicated that 3 is protonated at proton‐switchable binding sites in acidic conditions. Hence, facilitating binding of arsenate and dichromate is resulted from both electrostatic interactions and hydrogen bonding. To understand the selectivity of 3 , the retention of dichromate anions in the presence of Cl−, NO, and SO anions at pH 1.5 was also examined. 相似文献