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In this work, the problems of spectrum, quantum yield and lifetime of Phosphoresconce, photosensitization and photostabilization of polymeric acetophenone and its derivatives have been studied.

本工作合成和研究了高分子苯乙酮及其衍生物的光谱、磷光量子产率、磷光寿命以及光敏化、光稳定等问题。

The apparent quantum efficiency, photorespiratory rate and carboxylation efficiency also were strongly affected by light quality.

不同光质对草莓叶片的表观量子效率、羧化效率及光呼吸速率影响较大。

It had little effect onapparent photosynthetic quantum yield and photosynthetic electron transport rate,butcould significantly increase carboxylation efficiency in leaves.

GA3处理对叶片表观量子效率和电子传递速率没有影响,但能显著提高叶片的羧化效率。

In the continuous limit, the quantum one-dimensional extended Hubbard lattice model with half-filled band is transformed into the fermion field.

在连续化极限情况下把量子一维格点扩展Hubbard模型变换为连续的费米场。

In this thesis the process of constructing the non-perturbative Hamiltonian theory is de-scribed and is applied to estimate the vacuum condensate. It contains the following contents:At the very beginning, by using the path integral method and eliminating the gluon freedom, aGCM action 〓 of current quarks including lower order current-current coupling was derivedfrom the QCD Lagrangian and the effective Hamiltonian operator that could hardly be doneby the normal methods was derived. After doing this, the broken vacuum is introduced whichincludes quark-antiquark condensate through the generalized Bogoliubov-Valatin transformation,the effective Hamiltonian of constituent quark was derived. The detailed formulas containingthe spatial current-current coupling term for the effective Hamiltonian and gap equations wasworked out by parameterizing the correlation kernel as a quadratic potential. And then, the gapequation was solved and the quark-antiquark condensate of vacuum was studied both in the casesof instantaneous interaction and retarded interaction. In the end, the effective Hamiltionian withtwo-body quark-quark interaction was derived with one-body approximation, and with the helpof the functional integral method the coupling non-linear dynamic equations for systems withnuclear matter was derived. Finally, these equations were solved by selfconsistent method andthe effect of nuclear matter on vacuum condensate was studied. The spatial current-current coupling term is too difficult to handle, hence the correlationkernel is assumed to be not important and usually omitted in the pure vacuum condensate, andthe instantaneous interaction generally is adopted. Retaining the spatial current-current termand partial retardation effect, the quark pairs condensate in pure vacuum was studied, and theeffect of quark mass was also studied. At present, little study is focused in the case with nuclearmatter and spatial current-current term also omitted. Under the approximation with partialspatial current-current term, the effect of nuclear matter on vacuum condensate was studied.

本论文描述了量子色动力学整体色对称模型哈密顿量方法的构建过程,得到了反映正反夸克对凝聚真空结构的关于组分夸克的有效哈密顿量算符,它隐含了胶子作用,并且准确至流-流耦合项;接着,通过参数化哈密顿量中的夸克作用关联核,导出平方禁闭势参数化选择的哈密顿量的具体公式和能隙方程;随后,应用公式,编程求解,考察了瞬时作用下和部分延迟作用下真空的正反夸克对凝聚,在计算中保留了空间流-流耦合作用;之后,导出瞬时势和延迟势下包含二体作用项的哈密顿量公式,并采用单体化近似,通过泛函变分方法得到核物质存在时耦合的非线性动力学方程;在保留部分空间双流耦合作用的近似下,求解核物质的动力学方程,考察核物质密度对真空凝聚的影响,以往考察真空凝聚,对关联核的选用,由于空间流-流耦合项不易处理,也认为作用不大,常忽略该项,并且常采用瞬时作用;本文保留空间双流项和部分延迟作用,考察了真空情形的夸克对凝聚,还考察了夸克质量对纯真空凝聚的影响,以往对核物质存在情形的真空凝聚考察很少,也都忽略空间流-流项,本文在考虑部分空间流-流项近似下,考察了核物质存在对真空凝聚的影响。

In the second part of the work,quantum interference induced weak-localizationeffects as well aselectron-electroninteraction effects were investigated through magnetotransport measurementsfor highly doped n-ZnSe∶Clat metallic side of metal-insulator transition(MITgrown by MBE,withmagnetic fieldfrom 0 to 1T and temperaturefrom 0.3K to 30K.

第二部分对一系列分子束外延生长的高掺杂n-ZnSe∶Cl(位于金属绝缘体转变的金属一侧)在弱磁场(0到1T)以及低温(0.35K到30K)下进行了磁输运研究,以研究Anderson局域化,由于量子干涉效应引起的弱局域化效应以及无序存在时电子-电子相互作用效应。在所有样品中观察到了负磁阻并获得了其对温度,磁场以及电子浓度的依赖关系。

First, the geometry optimization for 1-phenyldibenzophosphole and triphenylphosphine were carried out using quantum chemical AM1 method.

用量子化学AM1方法优化了1-苯基二苯并膦和三苯基膦的几何构型,比较了两种化合物的电子结构和空间结构,发现PDBP作为羰基合成铑膦催化剂的配体要优于三苯基膦;系统研究了PDBP的合成方法,其最佳合成条件为:在无水无氧的条件下,采用二乙胺锂与溴化四苯基膦摩尔比为3,反应温度为22 ℃,反应5 h,反应后酸化, pH值为1~2,产物收率可达到85%~88%。

In this thesis, the InGaN/GaN MQW LEDs with various barrier doping structures are investigated.

本论文主要研究不同量子井阻挡层掺杂结构的氮化铟镓/氮化镓发光二极体,并探讨不同的掺杂结构对其光电特性之影响。

In this thesis, we report an investigation of two-wavelength excited photoluminescence on InGaN/GaN multiple quantum wells to study the nonradiative defects.

在这一篇论文之中,我们利用双光源激发的萤光光谱法来研究氮化铟镓/氮化镓多重量子井结构中的非辐射缺陷。

In this research, we compare the nanostructures and optical characterizations of three InGaN/GaN multiple quantum well light-emitting diode samples with different structures.

在本研究的第一部份中,我们比较三片具有不同结构的氮化铟镓/氮化镓多重量子井样品的奈米结构以及光学特性。

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推荐网络例句

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?