能量传递

Herein, a series of compounds, BP-C〓-NBD (n=2, 3, 4, 5, 6, 8, 10), was synthesized. Nanosecond flash photolysis, phosphorescence emission and lifetime, as well as photoisomerization reaction of norbornadiene were used to understand the intramolecular triplet energy transfer in detail.

我们设计、合成了以多亚甲基连接的二苯酮与降冰片二烯（BP-C〓-NBD，n=2，3，4，5，6，8，10）系列化合物，利用纳秒时间分辨技术、低温磷光发射、磷光寿命以及光敏异构化的方法，对其分子内三重态能量传递过程进行了详细地研究。

Femtosecond time-resolved studies using fluorescence depletion spectroscopy were performed on the vibrational relaxation; orientational relaxation and the intermolecular energy transfer of dye molecules in solutions under different conditions. The correlation of such ultrafast process with the system temperature and property of solvents is analyzed, which is useful for the further study about the ultrafast process of DNA, protein and other biological molecules, such as intra- and intermolecular electron, proton and energy transfer and photoisomerization.

本文的主要内容是利用飞秒时间分辨荧光亏蚀光谱探测技术对液相体系中的染料大分子在不同条件下的激发态振动弛豫、取向弛豫和分子间碰撞传能等超快动力学过程进行了研究，分析得到了这些超快过程与体系温度和溶剂性质之间的关系，同时为进一步研究DNA、蛋白质等生物分子体系的电子转移、质子转移、能量传递以及光致异构化等反应过程打下了基础。

The results showed that, in SiO2 xerogels, the energy transferring from picolinic acid to Eu3+ increased the luminescence intensity of Eu3+ by a factor of more than 100 and the compl...

研究发现，SiO2凝胶中吡啶－2－羧酸向Eu3＋的能量传递使Eu3＋的相对发光强度提高了两个数量级，并且吡啶－2－羧酸∶Eu3＋配合物在400℃能稳定存在。

Both excited state energy grades and energy transfer time constants in these APCs in monomeric as wellas trimeric aggregation states were also discussed.

结果表明，APC单体只有一个短寿命（75ps），来源于其两个亚基α84／β84间能量传递过程，另一长寿命（1080ps）是β84基态恢复的平衡时间。

The carboxyl of the tripodal ligand is a goodbridging group. The building blocks are linked together by the bridging group andother weak interactions (hydrogen bond and π-π stacking interaction, etc), thusgenerating a one, two or three-dimensional metal complexes.2. Studies on the fluorescence properties of the lanthanide complexes indicated that:(1) The excitations in the ligand-based π-π〓 transitions cause the structuredemission of lanthanide complexes while the ligand luminescence is completelyquenched showing that ligand-to-metal energy transfer occurs.

三脚架配体所带的羧基是一个很好的桥联基团，配合物的结构基元通过这种基团的桥联作用及其它一些弱的作用力(如氢键、π-π堆积作用等)联系起来，构成了一维、二维或三维的超分子空间结构。2、稀土配合物的发光研究发现：(1)用配体的π-π〓跃迁波长进行激发，配合物均显示出稀土离子的特征发射峰，同时，配体的荧光峰没有出现，这说明在三脚架配体与稀土离子间进行了有效的能量传递。

The results have shown that there exist excitation energy transfers from the component at 232 nm in PS II proteins to the tyrosyl residues, and from these two amino acid residues to chlorophyll a.

在PSII蛋白质内部，存在着232 nm处的组分与酪氨酸之间以及这两种氨基酸列基与叶绿素a之间的能量传递。

Below its critical micelle concentration, SDS effect facilitated the energy transfer from the component at 232 nm to the tyrosyl residues in PS II proteins, and also resulted in less micropolarity for tyrosyl residues, whilst at or above its cmc, SDS had an opposite effect.

低于其临界胶束浓度时，SDS会促进蛋白质中232 nm外的组分与酪氨酸之间的能量传递，并且使酪氨酸残基外于极性更小的环境；而大于cmc时，SDS却产生相反的效应。

With long term research professor Lin and his fellow men develop theories of "mannikin analogy"、" tissue-equivalent"、"atom、molecule、big molecule design"、" technology of simulate enzyme"、" technology of inherit templet"," quasi-element equivalent method" and "light element substitute method".

经过多年的研究，林教授与其同仁创建了&人体模型的相似性原理&、&人体组织等效性的判别及测试方法&、组织等效材料的&原子、分子、大分子层次设计原理&。用仿生工程模拟酶技术和遗传模板技术成功研究出体内外能量传递和分布辐射、超声、微波、热力学、力学及复合等效的新型仿生材料。这些材料按照人体组织相应的基本元素组成，按照&准元素等效&和&轻元素替代法&避免金属元素的谱线干扰，在医疗照射能谱范围内（60KeV-20000KeV），组织等效性误差控制在5%以内。

Brachionus angularis is usual specie in fresh water, and is considered to have important status in material cycle and energy transportation in fresh water ecosystem, and applied value in aquaculture.

角突臂尾轮虫是淡水常见轮虫种类之一，在自然水生态系统的物质循环和能量传递过程中具有重要的作用，在水产养殖和水环境监测等方面也具有重要的应用价值。

Brachionus calyciflorus is a common specie in freshwater ecosystem, and has important status in structure construction, material cycle and energy transportation in freshwater ecosystem.

萼花臂尾轮虫是淡水常见轮虫种类之一，在淡水生态系统的结构组成、物质循环和能量传递过程中具有重要的作用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。