fluorescence yield 中文意思是什麼
fluorescence yield
解釋
發熒光率- fluorescence : n. 熒光（性）。
- yield : vt 1 生出，產生（作物、報酬、利益等）。2 給與，讓與；讓渡；放棄（權利、地位等）；交出。3 承認。4 ...
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Combined the above results, there existed significant correlation among chlorophyll a fluorescence parameters ( fv / fo, fv / fm, yield, qp, qn and mda contents, plasma membrane permeability in euonymus japonicus " zhuzi " seedlings
葉綠素熒光a參數與mda含量及質膜相對透性的的相關性分析表明，低溫脅迫下， ps原初光能轉化受抑製程度與膜脂過氧化存在一定的關系。 -
Fluorescence quantum yield
熒光量子產率 -
Abstract : polyphenylacetylenes were synthesized by rn ( nbd ) cl 2 and wcl6 / ph4sn catalyst systems in n2 at room temperature. polymers with high yield and high molecular weight were obtained. their structures were characterized by uv, ir, nmr and gpc, respectively. the fluorescence of the polymer solution with different concentration was investigated using variable excitation wavelength from uv to visible region. the relation between fluorescence and polymer structure was studied. the results showed that the molecular chain structure has great influence on fluorescence of the polymers. the emitting peak wavelength of fluorescence for the polymer of high stereoregularity is independent of solution concentration and excitation wavelength. the emitting peak wavelength of fluorescence for the polymer with disordered molecular chain arrangement varies with changing the solution concentration and excitation wavelength, and different emission sites in molecular chains and low emitting yield are shown. the measurement and analysis of fluorescence spectroscopy of polyphenylacetylenes may provide some useful information to judge the molecular chain arrangement in some conjugated polymers
文摘:使用有機金屬銠、金屬鎢/四苯基錫催化劑體系聚合苯乙炔，分別獲得了高產率和高分子量的聚苯乙炔.使用uv ， ir ， nmr ， gpc等分別對聚合物結構進行了表徵.採用不同波長的激發光對聚合物熒光性能進行研究，詳細分析了聚合物結構與熒光性能之間的關系.研究結果發現，不同聚合物結構對聚合物熒光性能產生很大影響，規整性高的聚合物，將有較高的發光量子效率；聚合物規整性差，將可能導致多個熒光發光結構點，其熒光強度降低.聚合物熒光光譜研究將對某些共軛聚合物結構的規整性分析提供一些有用的信息 -
By studying the luminescence mechanism and the optical spectra, the two reasons for the diminish of light yield are given : the absorption of the fluorescence by the point defects when that produced and the scatter of the fluorescence by the macroscopic defects when that transmitting. in ce : yap scintillators, the available approach to improve the light yield is to diminish the self - absorption of the point defects
通過光譜分析和對發光機制的研究，指出在產生熒光輻射過程時晶體中的點缺陷對熒光的吸收以及熒光收集過程中宏觀缺陷對熒光的散射是造成晶體光產額減小的原因，通過減小晶格缺陷是提高晶體光產額的有效途徑。 -
The so made silica gel glass has quasi - inkbottle shape and median pore size distribution of 5 - 8nm which is suitable for the doping and protection of mpc molecules. mpc molecules in matrix always have a strong tendency to dimerization that can badly affect the linear absorption spectrum, causing quench of dye fluorescence and change the yield of photochemical processes. it is a vital problem that worth more attention
鑒于酞普的二聚化是影響其非線性性能和光限幅效應的重要因素，應用紫外一可見吸收光譜（ uv / vis ）測試技術，跟蹤研究了復合體系在溶膠一凝膠轉變過程中酞蓄二聚化的產生機理、主要影響因素和變化規律，提出了可能有效抑制二聚的技術途徑。
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