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     3.number of reflux episodes >5 min (times) 0.32±0.35(0.90);
     反流持续≥ 5min次数 (次 )0 .3 2± 0 .3 5 ( 0 .90 ) ;
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     2. pH<4 number of reflux episodes (times) 17.85±11.51(36.78);
     pH <4反流次数 (次 ) 17.85± 11.5 1( 3 6.78) ;
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     It was tested in the Sugar Beet Variety Regional Tests of national experiment during2000~2001,average root yield is53724.3kg /ha in32testing locations of three main productive regions,27.9%higher than check variety;
     2000~2001年参加国家甜菜新品种区域试验,在全国三大甜菜产区32个试验点(次)平均根产量53724.3kg/hm2,比对照增产27.9%;
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     The average yield of the new line amounted to 1 212.2 kg/hm~2 in the demostration test in 1998-2000 at 18 sites during 3 years,an increase of (11.79%) over check Vareity Dingwan No.
     在1998-2000年示范种植中,3a18点(次)平均折合产量1212.2kg/hm2,比对照品种定豌1号增产11.97%。
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     Productivity of the equipment was increased from 75 batteries/min to 140 batteries/min, waste rate was decreased from 0.25% to 0.22%. The efficiency of the equipment was improved 86.67%.
     该机生产率由75只/min提高到140只/min,废(次)品率由0 25%降低到0 22%,设备效率提高了86 67%。
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     Plant regeneration from I.
     首从I.
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     Properties of n-order parabola
     n抛物线的性质
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     Graded P -radical
     分P-根(英文)
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If is a ?2-grading of a simple Lie algebra, we explicitly describe a-module Spin0 () such that the exterior algebra of is the tensor square of this module times some power of 2.
      
Let ${\mathfrak n}_n({\mathbb C})$ be the algebra of strictly upper-triangular $n\times n$ matrices and let ${\mathcal X}_2=\{u\in {\mathfrak n}_n({\mathbb C})\mid u^{2}=0\}$ be the subset of matrices of nilpotent order 2.
      
In this paper, we classify all smooth affine spherical varieties up to coverings, central tori, and ${\mathbb C}^{\times}$-fibrations.
      
It is also shown that on the nilmanifold $\Gamma\backslash (H^3\times H^3)$ the balanced condition is not stable under small deformations.
      
We provide a direct computational proof of the known inclusion ${\cal H}({\bf R} \times {\bf R}) \subseteq {\cal H}({\bf R}^2),$ where ${\cal H}({\bf R} \times {\bf R})$ is the product Hardy space defined for example by R.
      
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Then theG0-orbit structure ofZ is described explicitly by the partial Cayley transforms of a certain hermitian symmetric sub-flagF?Z.
      
Let G be a stratified Lie group and L be the sub-Laplacian on G.
      
Synthesis and antiproliferative activity of 1-[(sub)]-6-fluoro-3-[(sub)]-1, 3,4-oxadiazol-2-yl-7-piperazino-1, 4-dihydro-4-quino
      
A series of 1-[(sub)]-6-fluoro-3- [(sub)]-1, 3, 4-oxadiazol-2-yl-7-piperazino-1, 4-dihydro 4-quinolinones were synthesized by the reaction between ciprofloxacin and norfloxacin with an appropriate acid hydrazide in phosphorous oxychloride.
      
In this paper it is proved that the regular graphs under some conditions do have an ascending sub-graph decomposition.
      
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The 3D QSAR studies using Apex 3D expert system led to the identification of the pharmacophore in terms of common biophoric sites and secondary sites for interacting with PPARγ receptors.
      
1) for R isomers with correlation coefficient r =0.9, chance= 0.05 and match= 0.47 has four biophoric sites and three secondary sites while the best model for S isomers (model no.
      
2) with correlation coefficient r =0.86, chance =0.01 and match = 0.45 has three biophoric sites and two secondary sites.
      
Biological Evaluation of a Secondary Metabolite, 9-O-methylfusarubin, from Fusarium oxysporum
      
In this paper a new mathematical model of secondary frost heave is presented.
      
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In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the...

In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the given final region of states. Some conclusions are obtained from the maximum principle by using transversal conditions of optimal trajectories in terminal points, and the particular properties of the stated problem are pointed out. The case of linear dif-ferential equations with integral quadratic functional criterion is investigated in detail.Further, in the second part the fundamental properties of isoloss regions, the rela-tions between the isoloss region and optimal control functions are indicated. As a direct result a partial differential equation determining the optimal loss-function J (x) is found and the connection between function J (x)and optimal vector control function u (x) is also stated. The methods proposed are practically the extension of the me-thods used by us for designing time optimal control systems as seen in [5, 6 ,7].Finally, an example is illustrated with optimal trajectories shown in phase plane.The necessary numerical data is calculated by an analog computer with high accuracy.

文中研究了具有公式(3)表示的一般正积分泛函的最优控制系统的综合问题.在第一部分中研究了具有控制参数的一阶微分方程组.控制系统的终点状态为n维相空间内的某一逐段光滑边界的闭性区域Ω.文中指出了根据极大值原理和轨道终点的横截条件寻找引到Ω的所有最优轨迹的方法.这里详细地研究了具有二泛函和被积函数中不明显含有控制参数的质量指标泛函的线性方程情况.在文中第二部分研究了等损耗区的主要特性.指出了等损耗区与最优控制函数之间的关系.导出了求算最优损耗函数J(x)的偏微分方程,以及这一函数与最优控制函数u(x)的关系.上述方法是我们曾在文献[5,6,7]中用过的最优快速系统的综合方法的推广.文章最后举有例证.

1. All kinds of colonies of Volvox africanus were found in great abundance during the first two weeks of May, 1933, from a pond in Nanking.2. The smallest colony is much smaller than that recorded from Africa and the Philippine Islands.3. The somatic cells are not connected by protoplasmic filaments in adult colonies.4. Asexual colony usually contains from two to six daughters symmetrically arranged in pairs according to size on opposite sides of the polar axis.5. Sexual colonies of different kinds are developed...

1. All kinds of colonies of Volvox africanus were found in great abundance during the first two weeks of May, 1933, from a pond in Nanking.2. The smallest colony is much smaller than that recorded from Africa and the Philippine Islands.3. The somatic cells are not connected by protoplasmic filaments in adult colonies.4. Asexual colony usually contains from two to six daughters symmetrically arranged in pairs according to size on opposite sides of the polar axis.5. Sexual colonies of different kinds are developed from the asexual mother either singly or in combination with other kinds and asexual daughters.6. Parthenogonidia develope very early in young embryos long before the latter become matured and escaped from the mother colony. 7. During the early development of parthenogonidia, at least from first to fifth or sixth divisions, no growth of the whole embryo takes the place while the number of cells increases.8. Spermatogonia attain fully-grown size and begin to divide before the time of the birth of the colony.9. The development of spermatogonium consists of seven successive divisions in forming a bundle or platelet of one hundred and twenty eight spermatozoa or microgametes.10. The number of ovaries in a female colony varies from twelve to fourty six. Generally, the larger the colony, the more the ovaries developed.11. Risexual colonies contain only two or three spermatogonia in addition to fourteen to twenty seven ovaries.12. In general, specimens recorded in Nanking are identical to those from the tropical regions such as Africa and the Philippine Islands.

關於菲洲團走子之分佈,按記載所及。僅限於菲洲,菲列濱,南印度等熱带區域。今在南京發現,於地理分佈上實為一新記錄。此種團走子在羣體成熟之後,其體質细胞間,並無原生質線交相聯絡。無性羣體每含有二至六大小不同成對均置之無性幼羣體。幼羣體在脫離母體以前,往往含有第二代幼體。各種有性羣體,亦自無性母羣體中發達而成。雄性羣體,皆为橢圓形,而較其他羣體為小。雌性羣體中之卵或大配子约有十二至四十六。雙性羣體只含有二或三精原细胞,及十五至二十七卵或大配子。孤性生殖细胞在幼羣體内即發生。當最初五或六分裂時,细胞雖增加,而幼胎並不長大。精原细胞经七連續之均等分裂,而成一束一百二十八精子或小配子。

By means of Schmidt's "shaking method", the emanation content of certain springs and artasian wells in the Peiping area was tested. Radon, thoron, or both together, were found in these water sources. Tests were made both in the spring of 1932 and 1935. No noticeable variation of the emanation content in these sources has been observed.

应用斯密特之“摇动法,”测定北平邻近之泉水,如汤山温泉,温泉,玉泉山水及清华,燕京、协和医诸校内自流井所含之射气量。诸泉源或仅含镭射气,钍射气,或二种射气皆有之。民国二十一年与二十四年,曾测验诸泉水各一,所含之射气量,绝少改变。

 
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