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991.
992.
Because of the thermal effect of window of high power fast axial flow (CO2 laser, the coupler will be distorted and become a convex lens. In this paper, the thermal distorted coupler is taken as a quasi-lens ABCD system, and through experiment and theoretical analysis, relations between the position of the output beam waist, the beam waist size, divergence angle, and the output power are given. 相似文献
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995.
In this report, we will present the organic-inorganic hybrid molecular films prepared in our group and their applications in chemical sensors and biosensors.Many types of multi-layered films have been prepared in an alternatively assembled organic-inorganic and layer-by-layer manner. We will focus on the alternatively organized organic surfactant and metal-complex films and their conversion into electrocatalytically active films. Especially, we will demonstrate the preparation of bifunctional films for the detection of two different but correlated species, such as nitric oxide and oxygen, in biomedia. 相似文献
996.
WANG Yue LU Xing ZHANG Hai-yuan YANG Kui-yueNIU Chun-ji * * NI Jia-zuan 《高等学校化学研究》2001,17(4):352-355
The insoluble species of Gd ( Ⅲ ) in human blood plasma were investigated by computer simulation. The distribution of the Gd(Ⅲ ) species was obtained. It was found that most of the Gd( Ⅲ ) ions were bound to phosphate to form precipitate GdPO4 at the concentration of 1. 000 10-7 mol/L and when the concentration of the Gd (Ⅲ ) increased to 3. 750 X 10-4 mol/L, in excess of the concentration of phosphate, the Gd ( Ⅲ ) ions were bound to carbonate to form another kind of precipitate, Gd2(CO3)3. 相似文献
997.
HCPCF is a color reagent for the determination of vanadium, zinc and magnesium, etc. To the best of our knowledge, no work on the decoloring reaction for analytical use of HCPCF for the determination of oxidative anions has been report. In this work, we found that some oxidative anions can oxidize HCPCF in acid medium, forming a colorless product. In addition, surfactant was used in this work, because of the low solubility of HCPCF in aqueous solutions. The purpose of this work is to establish a new, rapid and simple spectrophotometric method for the determination of NO2-, BrO3-,IO3-, IO4-and Cr2O7-based on the reaction between HCPCF and analytes in the presence of emulsion OP. 相似文献
998.
设计和建立了一种质谱在线连续检测系统。该系统响应迅速,操作灵活。可直接与反应系统或与色谱等联机使用,对所有的气相反应和有可挥发组分的液相反应进行在线检测。在ZrO2-A12O3上进行了NH3吸脱附和CO脉冲反应的研究,获得了重现性很好的结果。 相似文献
999.
Room temperature phosphorescence(RTP) probe is a powerful tool for studying the kinetics and relationship between the conformation change and physiological function of protein because some slow kinetic processes of protein in solution just occur the same time scales as phosphorescence lifetime and it susceptibly indicates microenvironment properties. RTP of Escherichia coli alkaline phosphatase(AP) comes mainly from tryptophan residues (Trp-109). It is well known that the deeper Trp-109 is embedded, The stronger phosphorescence emitting is, and the longer its lifetime is. The current work is a preliminary study of the conformation changes of AP, the local microenvironment of Trp-109 and the quenching kinetic natures in the unfolded processes of AP in the presence of different denaturants. 相似文献
1000.