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Finally, in the third section, by constructing some functional which similar to the conservation law of evolution equation and the technical estimates, we prove that in the inviscid limit the solution of generalized derivative Ginzburg—Landau equation converges to the solution of derivative nonlinear Schrodinger equation correspondently in one-dimension; The existence of global smooth solution for a class of generalized derivative Ginzburg—Landau equation are proved in two-dimension, in some special case, we prove that the solution of GGL equation converges to the weak solution of derivative nonlinear Schr〓dinger equation; In general case, by using some integral identities of solution for generalized Ginzburg—Landau equations with inhomogeneous boundary condition and the estimates for the L〓 norm on boundary of normal derivative and H〓 norm of solution, we prove the existence of global weak solution of the inhomogeneous boundary value problem for generalized Ginzburg—Landau equations.
第三部分:在一维情形,我们考虑了一类带导数项的Ginzburg—Landau方程,通过构造一些类似于发展方程守恒律的泛函及巧妙的积分估计,证明了当粘性系数趋于零时,Ginzburg—Landau方程的解逼近相应的带导数项的Schr〓dinger方程的解,并给出了最优收敛速度估计;在二维情形,我们证明了一类带导数项的广义Ginzburg—Landau方程整体光滑解的存在性,以及在某种特殊情形下,GL方程的解趋近于相应的带导数项的Schr〓dinger方程的弱解;在一般情形下,我们讨论了一类Ginzburg—Landau方程的非齐次边值问题,通过几个积分恒等式,同时估计解的H〓模及法向导数在边界上的模,证明了整体弱解的存在性。
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The Geobiology and Astrobiology group researches on Geobiology studies of the interactions that occur between the biosphere and the geosphere, and Astrobiology studies of the big bang, progressing to the destiny of man, the limits of life and habitability on our planet, organisms in certain condition, and the detection of extraterrestrial life.
该研究组主要研究地理生物学,包括生物圈和岩石层之间的相互作用,和太空生物学研究,包括宇宙大爆炸,人类的命运,地球上生命和居住环境的限制因素,一定环境下的有机体,以及宇宙生命的探索。
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In iron-deficient cells, photosynthetic pigments content decreased, efficiency of photosynthesis was low, With the increase of the concentration of the iron-chelator 2, 2'-Dipyridyl in media, Fv/Fm decreased, indicating photoinhibition increased, the results were consistent with previous research; Heterocyst induction had one delayed time dependent on the status of iron-deficiency, More severe of the iron-deficiency condition, more late of the heterocyst induction, It is possible that certain iron-related genes may directly regulate heterocyst development; under different iron limitation conditions, Protein pattern were different, more serious of the iron-deficiency conditions, less bands of the protein pattern, We could not find the iron-deficiency induced protein; In general the toxic effects of ROS were potentiated by excess iron, But our results revealed that even under iron-deficiency conditions, Oxidative damage existed.
铁限制的细胞光合色素含量下降,光合作用能力下降,随着铁螯合剂2,2'-dipyridyl浓度的增加,叶绿素荧光F〓/F〓逐渐降低,显示光抑制变强。与前人的研究结果相似;依赖铁缺失状态,异形胞诱导有一段推迟的时间,铁缺失越严重,诱导越迟,推断某些铁相关的基因会直接调节异形胞发育;在不同铁营养条件下,蛋白质图谱的变化趋势很明显,缺铁越严重,则蛋白质谱带数愈少,但本文未能找到特异诱导蛋白;一般认为铁过量情况下ROS产生加强,本文结果显示即便在铁缺失条件下,也有氧化胁迫伤害,而且缺铁越严重,活性氧伤害越大。
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Since hold water, faddish immerse oneself in the research and development at P2P technology core all the time, in NAT penetrable, resource attempers, distributed node all mastered a large number of patent skills on the core technology such as fixed position algorithm, technology of order programme of long-term P2P video is accumulated, rose to transcend the technical barrier that video of long, high-definition clear broadcasts when short amortize for faddish vertical stroke, created a condition to put high-definition video on advertisement.
自成立以来,风行一直埋头于P2P技术核心的研发,在NAT穿透、资源调度、分布式节点定位算法等核心技术上均掌握了大量专利技术,长期P2P视频点播技术积累,为风行竖起了超短缓冲时长、高清晰视频播放的技术壁垒,为投放高清视频广告创造了条件。
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This paper is based on the features of technics structure, operation condition, import and export boundary conditions, characteristics of medium of petrochemical pipeline and so on. The simulative computational theory and model of multiphase flow are established according to the method of CFD to analyse the hydrokinetics redical factors that can affect the pipe erosion damage of multiphase flow.
本文针对石化管道的工艺结构、运行工况、出入口边界条件和工艺介质特性等特点,基于计算流体力学的方法对多相流进行仿真理论计算及模型建立,以此来分析影响管内多相流冲蚀破坏的流体动力学关键因素。
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On the other hand, given calibration ξ in Rn+l, if it statisfies Frobenius condition, there is ξ-submanifold through every point. We know that each ξ- submanifold is homologically volume minimizing in Rn+1, so that every minimal hypersurface in Rn+1 is stable locally.
反之,给定R~(n+1)上的calibrationζ,如果它满足Frobenius可积条件,则过每一点有ζ的积分子流形M,我们知道ζ的积分子流形在其同调类中体积最小,自然M也局部是R~(n+1)中的稳定极小子流形。
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In this paper the key points discussed were that, under the condition of a sharp hypsography of desert areas of Ordos basin, we used some new geophysical methods in the investigation of surface structure to obtain high accurate surface structure data and provide reliable scientific foundation for data acquisition and process; we dealt with the optimum coupling of surface geophones and the digital realization technique in desert areas, dug into a method of high frequency compensation according to attenuations by absorption near surface, adopted data processing and correction technique, solved high frequency attenuation and geophone coupling, eliminated the influences of sharply transverse fluctuation of hypsography in desert area on the seismic data, enhanced the fidelity and SNR of seismic section, and finally picked up more geologic information on the seismic profile and improved the precision of the lateral prediction for the reservoir beds.
本文旨在研究鄂尔多斯盆地沙漠区地表变化比较大的情况下,在表层结构调查中通过应用一些地球物理新方法,以获取高精度的表层结构数据,为资料采集和数据处理提供更科学的依据;研究在沙漠区地表检波器最佳耦合的方式与数字实现技术,研究通过近地表的吸收衰减规律进行高频补偿的方法,采用数据处理校正技术,解决高频吸收及检波器耦合,消除沙漠区表层横向剧烈变化对地震资料的影响,提高地震剖面的保真度和信噪比,从而使更多的地质信息能够从地震剖面中反映出来,提高储层横向预测的精度。
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This paper focuses on discussing of the definition, content, nature and significance of accounting principles to a wide extent, especially, summarizing and describing of the accounting principles that are suitable to Chinese condition, based on analysing and critically imbibing the research achievement abroad.
本文的中心意旨在于,深入地探讨会计原则的涵义、内容、性质和作用等方面,尤其要在分析、评价和批判地吸收国外对会计原则研究成果的基础上,认真总结和概括适应中国国情的会计原则体系,并且说明与之相关的一些会计理论问题。
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Firstly,by using the estimating methodfor the compact embedding operators(from weighted Sobolev space to the weighted〓space),we obtain a necessary and sufficient condition for the discreteness of thespectrum of certain differential operators.Secondly,based on the property of thespectrum of difinitizable operators on the Krein space,we consider the left definitedifferential equations with middle deficiency indices,and give a completecharacterization for self-adjoint(J-self-adjoint)differential operators in theindefinite inner product space 〓.Especially,we prove that all the J-self-adjoint differential operators are definitizable.
我们首先运用加权Sobolev空间到加权〓空间嵌入算子紧性的判别方法,证明一类加权自伴微分算子具有离散谱的充要条件;然后,基于Krein空间上可定化算子谱的性质,对于具中间亏指数的左定型微分方程,建立其相应的微分算式在不定度规空间〓上所生成自伴算子的完备性刻画(特别证明了J-自伴微分算子具有可定化性)。
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Painting film should be in conformance with design requirements. Thin coating always bring on coating's inutility, while thick coating also is dangerous, and condition of two kind will happen: first one, solvent contained in painting can't volatilized completely, that will reduce conglutination consequently; the second is thick painting may bring on prime crack.
漆膜的厚度应适当并符合设计要求的厚度,如果膜厚不足,通常会导致涂层提前换效,但是涂层太厚也同样具有危险性,现代高科技涂料如果涂覆过厚,会有下列二种情况发生:一是涂料含有的溶剂不能充分发挥出来,从而大大降低附着力;二是底漆龟裂。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。