多元线性模型计算基于荧光猝灭原理的膜传感器对分析物的响应参数

根据基于荧光猝灭原理的化学传感膜的结构特征和发光机理,推导并提出量化作用于膜传感器的多种荧光猝灭因素的多元线性模型.结合三杯法,该模型可简便地求出反映不同荧光猝灭机理的特征参数.通过建立的数学模型,测定并计算了芘丁酸膜传感器对应于呋喃妥因等23种药物多种荧光猝灭因素的响应数据和响应参数.结果表明,传感膜对分析物的响应特征往往能得到主要猝灭因素响应模型的近似反映,这为基于荧光猝灭原理的化学传感器定量分析模型的建立提供了可借鉴的思路和方法.     

A Novel Catalyst in N2O Decomposition-the Preparation of Cu,Co-exchanged Al-pillared Smectite and its Catalytic Activity

Nitrous oxide(N₂O) is now considered a greenhouse gas and contributes to catalytic stratospheric-ozone destruction. Therefore, the catalytic decomposition of N₂O has become one of the urgent environmental issues^[1-4].     

Photo-electrochemically Synergetic Effect in the Catalytic Degradation of Reactive Dyes

The dye wastewater has a high potential environmental impact principally due to the wastewater containing high organic charge and strong coloration. As far as back the 1980s, the totals of synthesized dyes have been more than 800 thousand tons every year in the whole would. However, in the all of dyes, reactive dyes represent an important fraction of the commercialized synthetic pigments used. The major environmental problem associated with the use of the reactive dyes is their loss in the dyeing processes with general low fixation efficiency, large mount of dye-containing wastewater was inevitably discharged into water supply. So, the treatment of wastewater containing reactive dyes is very urgent for our health.     

Na_3Eu(DPA)_3-PC树脂的制备及其发光性能

根据稀土有机配合物 Na3Eu(DPA) 3(DPA:2 ,6-pyridine dicarboxylic acid)的发光强和热稳定性高的特点 ,采用加热方法将 Na3Eu(DPA) 3掺入 PC树脂中 ,制成发光塑料树脂 .其发光性能结果表明 ,Na3Eu(DPA) 3掺入 PC树脂后 ,仍保持稀土有机配合物原有的发光特性 ,制成的 Na3Eu(DPA) 3-PC树脂复合材料具有良好的发光性能 ,其发光强度与稀土有机配合物 Na3Eu(DPA) 3掺入的比例量有关 ,但没有一定的线性关系 .     

Catalytic performance and structural characterization of ferric oxide and its composite oxides supported gold catalysts for low-temperature CO oxidation

The preparation and catalytic activity of ferric oxide and its composite oxides supported gold catalysts for low-temperature CO oxidation were investigated detailedly, and characterized extensively by XRD, XPS, TPR, EC and XAFS techniques. It was found that containing highly dispersed Au of partially oxidized state, these nano-structured oxides supported Au/Fe2O3 and Au/NiFe2O4 catalysts had higher low-temperature activities. The possible catalytic active center is the gold of partially oxidized state (Auζ+).     

远轴高斯波的矢量场理论

提出了描述远轴高斯光波的矢量场方法,推导了精确的远场传播公式,讨论了矢量场远轴高斯波的远场光波特征和传播规律,并与标量场理论作了比较,指出了标量场理论的适用范围． 关键词：     

具有O-P=P结构的二磷烯羰基钨配合物的氧化反应和光异构化反应

间氯过氧苯甲酸与具有Ｏ－Ｐ＝Ｐ不对称结构的二磷烯羰基钨配合物反应,给出了一种新的膦酯配合物,经ＭＳ,ＮＭＲ,ＩＲ和元素分析确定了它们的结构用光照射一个（Ｅ）－二磷烯的羰基钨配合物,观测到光异构化反应发生,（Ｚ）－二磷烯的羰基钨配合物异构体通过＾３１Ｐ,ＨＮＭＲ被表征。     

A One-Dimensional Model of Hydrogen Molecular Ion

We present a study on a one-dimensional hydrogen molecular ion under the Born-Oppenheimer approximation. A canonical transformation produces the classical system directlyto be a pendulum. The quantum Schrodinger equation is solved analytically and theelectronic energy curves show that the bound states of this 1D model differ from the 2D and 3DH₂⁺. The vibration spectroscopy is also obtained by employing the Morse's eigen wavefunctionsas basis vectors to diagonalize the Hamiltonian for R. The semiclassical quantization yieldselectronic energies in agreement with the quantum ones reasonably.     

直线度误差的光电非接触测量方法

基于光电检测技术,利用回转和轴向进给伺服系统,通过激光扫描检测系统测量刀口尺与被测零件素线之间的间隙,实现了对直线度误差的非接触自动测量。详细论述了直线度误差的测量方法和光电检测系统,通过实验对系统的测量精度进行了验证。     

Cluster structure of the material surface as the cause of the selective enhancement of ultracold-neutron capture associated with subbarrier reflection

Neutron-radiation analysis is used to investigate the subbarrier reflection of ultracold neutrons from the surface of a titanium-stabilized Fe-Ni-Cr stainless steel. A significant selective increase in the probability of neutron capture by nuclei of the medium in comparison to theory is discovered. An explanation is given for the effect, which is associated with the existence of titanium-containing clusters and structural defects that distort the form of the distribution of the effective interaction potential between ultracold neutrons and the material surface. Zh. éksp. Teor. Fiz. 115, 126–140 (January 1999)