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two-donor
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  双施主
     The Two-Donor Model of Recording and Reading of Holograms with Crystals Bi_(12)SiO_(20)-Type
     Bi_(12)SiO_(20)类晶体中全息图记录和读出的双施主模型
短句来源
     The Kukhturev single-donor model of recording and reading of holograms with photorefractivecrystuls Bi12SiO20-type is amended by the two-donor model.
     用双施主模型对Bi12SiO20(BSO)类光致折射晶体中全息图记录和读出的Kukhtarev单施主模型进行了修正。
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  相似匹配句对
     Two.
     二.
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     Two.
     二、末日意识
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     Two results on g-functions
     关于g-函数的两个结果
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     DONOR PROPERTIES OF METALLOPORPHINS
     金属卟吩的给体性质
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     as donor and wheat as receptor.
     为供体 ,宁春 4号小麦为受体 ,采用花粉管通道法进行外源 DNA导入。
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  two-donor
Female inflorescences were collected after a fixed time of germination, pollen-tube lengths were measured for each cross, and paternity of the seeds sired by two-donor pollen mixtures was analyzed using isozyme markers.
      
Both single donor and two-donor pollinations were employed.
      


Using (20-300K) Hall coefficient measurement and (6-300K) IR optical absorption, thermal donor generated in P-CZ Si single crystal after heat treatment at 450℃ over a wide range of time has been studied. It is shown from Hall coefficient measurements that two donor levels in the specimen after 100 hrs. annealing are observed: E1 = 56 meV, E2 = 110 meV. Low temperature IR optical absorption of specimens after annealing of different duration shows complex structure arising from thermal donor. The intensity and...

Using (20-300K) Hall coefficient measurement and (6-300K) IR optical absorption, thermal donor generated in P-CZ Si single crystal after heat treatment at 450℃ over a wide range of time has been studied. It is shown from Hall coefficient measurements that two donor levels in the specimen after 100 hrs. annealing are observed: E1 = 56 meV, E2 = 110 meV. Low temperature IR optical absorption of specimens after annealing of different duration shows complex structure arising from thermal donor. The intensity and number of the absorption peaks increase with increasing duration of annealing. The results obtained can be phenomenologically explained fairly well by the hydrogen-like effective mass approximation theroy assuming the occurence of different species of doubly charged donor. The oxygen-related thermal donor can also be possibly understood as doubly charged donor. The number of species of thermal donor is closely correlated to the duration of annealing.

利用20—300K的Hall系数测量和6-300K的红外光吸收,研究了含氧P型CZ硅单晶经450℃不同时间热处理后所产生的热施主问题。Hall系数测量表明:经100hr热处理的样品存在两个施主能级:E_1=58meV,E_2=110meV。对不同热处理时间的样品,从低温红外光吸收则可看见由于热施主所引起的复杂吸收光谱。这些吸收峰的数目随着热处理时间的加长而增加和加强。利用类氢模型和有效质量理论拟会和计算,可以证明与氧有关的热施主很可能是双重电荷施主。这些双重施主有多种组态,它与450℃热处理的时间有关。

The electronic structures of clusters PdSi_(10)H_(16) and PdSi_4H_(12) modeling interstitial and subs-titutional Si:Pd have been calculated respectively,using spin-restricted Xα-SW method.Theresults show; (1) the two donor-type deep levels in Si: Pd recently discovered by Ruan et al.,might not be simply originated from the interstitial Pd in silicon,they are also related tothe existence of other defect; and (2) a Jahn-Teller type of distortion should exist in the subs-titutinal Si:Pd system.The distortion is...

The electronic structures of clusters PdSi_(10)H_(16) and PdSi_4H_(12) modeling interstitial and subs-titutional Si:Pd have been calculated respectively,using spin-restricted Xα-SW method.Theresults show; (1) the two donor-type deep levels in Si: Pd recently discovered by Ruan et al.,might not be simply originated from the interstitial Pd in silicon,they are also related tothe existence of other defect; and (2) a Jahn-Teller type of distortion should exist in the subs-titutinal Si:Pd system.The distortion is probablly similar to the case of the vacancy acceptorcentre in silicon,in which the Td→D_(2d)→C_(2v),symmetry-lowering has undergone. This is inagreement with the Si:Pd- acceptor centre geometry model proposed by Woodbury et al,basedon their EPR experiment.

本文用Xα-SW法计算模拟间隙位和替代位Si:Pd的集团PdSi_(10)H_(16)和PdSi_4H_(12)的电子结构,结果表明:(1)最近阮圣央等人在实验上发现的Si:Pd的两个施主型新能级不可能简单地归因于Si晶格中的间隙位Pd,它们还与其它缺陷的存在有关;(2)Si晶格中替代位的Pd 将使体系发生Jahn-Teller 畸变,畸变可能类似于空位受主中心所经历的Td→D_(2d)→C_(2v)型畸变,这与Woodbury 等人根据EPR实验所提出的Si:Pd~-受主中心的几何模型相一致.

The effect of charge-transfer(CT) interaction between the solute molecules in mobile phase on chromatographic process was investigated. It was found that the separation of two neighbouring peaks in liquid chromatogram is modified by CT interaction in chromatographic process. For example, the resolution (Rs) between the peaks of two donors (B1 and B2) depends oa the concentration of aa acceptor A:Rs=R0s+f(CA)f(CA) is either positive or negative, while the resolution is either increased or decreased with the difference...

The effect of charge-transfer(CT) interaction between the solute molecules in mobile phase on chromatographic process was investigated. It was found that the separation of two neighbouring peaks in liquid chromatogram is modified by CT interaction in chromatographic process. For example, the resolution (Rs) between the peaks of two donors (B1 and B2) depends oa the concentration of aa acceptor A:Rs=R0s+f(CA)f(CA) is either positive or negative, while the resolution is either increased or decreased with the difference in molecular CT interactions. This point of view also fits in with gas chroma-tography.

本文从溶质分子间的电荷转移相互作用,讨论了溶质浓度对色谱过程的影响。由于溶质分子间的相互作用,在一定的浓度范围内改变了固定相的表面吸附状态,改变色谱分离效果,两相邻色谱峰的分辨率随溶质浓度而变化,文中以液体色谱为例,着重从理论上进行阐述,力图得出一些清新的概念。这些概念同时也适合于气相色谱,只不过在方程式的表达上略有不同。

 
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