Heterogeneous Deposition of Cu2O Nanoparticles on TiO2 Nanotube Array Films in Organic Solvent

A novel method for decoration of anodic TiO2 nanotube array films (NAFs) with Cu2O nanoparticles has been reported. The method is based on the reduction of Cu(II) in a mixture of ethylene glycol and N,N-dimethylformamide at 120°C for 16 h, where the resulting Cu2O can heterogeneously nucleate and grow on TiO2 NAFs. The nanosized Cu2O is found to be well dispersed on the wall of TiO2 nanotubes without blocking the nanotube, a commonly observed phenomenon in the case of deposition of Cu2O via electrochemical method. The amount of Cu2O deposited on the TiO2 NAFs can be varied by adjusting the concentration of Cu(II) in the organic solution. UV-vis spectra measurement indicates that the decoration of TiO2 NAFs with Cu2O nanoparticles greatly improves their ability to respond to visible light. By examining the photocurrent and photodegradation of methyl orange under simulated sunlight, it is found that these Cu2O-decorated TiO2 NAFs show much more photoactive in comparison with the as-prepared TiO2 NAFs

Sensitivity Estimates From Characteristic Functions

The likelihood ration method (LRM) is a technique for estimating derivatives of expectations through simulation. LRM estimators are constructed from the derivatives of probability densities of inputs to a simulation. We investigate the application of the likelihood ratio method for sensitivity estimation when the relevant densities for the underlying model are known only through their characteristic functions or Laplace transforms. This problem arises in financial applications, where sensitivities are used for managing risk and where a substantial class of models have transition densities known only through their transforms. We quantify various sources of errors arising when numerical transform inversion is used to sample through the characteristic function and to evaluate the density and its derivative, as required in LRM. This analysis provides guidance for setting parameters in the method to accelerate convergence.

Method for stereo mapping based on ObjectARX and pipeline technology

Stereo mapping is an important way to acquire 4D production. Based on the development of the stereo mapping and the characteristics of ObjectARX and pipeline technology, a new stereo mapping scheme which can realize the interaction between the AutoCAD and digital photogrammetry system is offered by ObjectARX and pipeline technology. An experiment is made in order to make sure the feasibility with the example of the software MAP-AT (Modern Aerial Photogrammetry Automatic Triangulation), the experimental results show that this scheme is feasible and it has very important meaning for the realization of the acquisition and edit integration

lowdensityextracorporealshockwaveandlowdoseintermittentrecombinanthumanparathyroidhormone134influenceproliferationanddifferentiationofosteoblasts

背景：体外冲击波等应力刺激可促进成骨，甲状旁腺激素激素也参与调控骨代谢。目的：实验探讨低剂量间歇人重组甲状旁腺素1-34和低能体外冲击波对体外培养大鼠成骨细胞增殖及成骨分化的作用。方法：采用改良胶原酶消化法培养大鼠乳鼠颅骨来源成骨细胞备用。分别用60-150次0.18 mJ/mm2低能体外冲击波刺激体外培养大鼠成骨细胞，不同浓度（10-12 mol/L-10-10 mol/L）及作用方式的人重组甲状旁腺素1-34刺激，以及低能体外冲击波和间歇低剂量（10-11 mol/L）间歇人重组甲状旁腺素1-34刺激共同作用后，用锥虫蓝法进行细胞计数、MTT和流式细胞术分析检测大鼠成骨细胞的增殖情况；用酶标仪检测碱性磷酸酶活性，用免疫组化检测Ⅰ型胶原表达来观察大鼠成骨细胞的成骨分化。结果与结论：60-150次0.18 mJ/mm 2低能体外冲击波刺激、间歇人重组甲状旁腺素1-34（10-11和10-10 mol/L）刺激以及低能体外冲击波＋间歇人重组甲状旁腺素1-34（10-11 mol/L）刺激均可显著促进体外培养大鼠成骨细胞增殖和成骨分化（P＜0.05），其中60-150次低能体外冲击波刺激＋间歇人重组甲状旁腺素1-34刺激各组作用最强（P＜0.05）。结果证实，适当的低能体外冲击波应力刺激和低剂量间歇人重组甲状旁腺素1-34刺激联合应用可显著促进体外培养大鼠成骨细胞的增殖和成骨分化

lowdensityextracorporealshockwaveandlowdoseintermittentrecombinanthumanparathyroidhormone134influenceproliferationanddifferentiationofosteoblasts

背景：体外冲击波等应力刺激可促进成骨，甲状旁腺激素激素也参与调控骨代谢。目的：实验探讨低剂量间歇人重组甲状旁腺素1-34和低能体外冲击波对体外培养大鼠成骨细胞增殖及成骨分化的作用。方法：采用改良胶原酶消化法培养大鼠乳鼠颅骨来源成骨细胞备用。分别用60-150次0.18 mJ/mm2低能体外冲击波刺激体外培养大鼠成骨细胞，不同浓度（10-12 mol/L-10-10 mol/L）及作用方式的人重组甲状旁腺素1-34刺激，以及低能体外冲击波和间歇低剂量（10-11 mol/L）间歇人重组甲状旁腺素1-34刺激共同作用后，用锥虫蓝法进行细胞计数、MTT和流式细胞术分析检测大鼠成骨细胞的增殖情况；用酶标仪检测碱性磷酸酶活性，用免疫组化检测Ⅰ型胶原表达来观察大鼠成骨细胞的成骨分化。结果与结论：60-150次0.18 mJ/mm 2低能体外冲击波刺激、间歇人重组甲状旁腺素1-34（10-11和10-10 mol/L）刺激以及低能体外冲击波＋间歇人重组甲状旁腺素1-34（10-11 mol/L）刺激均可显著促进体外培养大鼠成骨细胞增殖和成骨分化（P＜0.05），其中60-150次低能体外冲击波刺激＋间歇人重组甲状旁腺素1-34刺激各组作用最强（P＜0.05）。结果证实，适当的低能体外冲击波应力刺激和低剂量间歇人重组甲状旁腺素1-34刺激联合应用可显著促进体外培养大鼠成骨细胞的增殖和成骨分化