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Articles by Lin Zhou
Total Records ( 4 ) for Lin Zhou
  Ling Zhang , Wenzhong Wang , Lin Zhou , Meng Shang and Songmei Sun
  The magnetic photocatalyst, Fe3O4/BiOCl nanocomposite, was prepared and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM), physical property measurement system (PPMS). It was found that Fe3O4/BiOCl was an effective photocatalyst to degrade the organic dyes. Compared with the conventional core–shell magnetic photocatalysts, such as Fe3O4/TiO2 system which dramatically lost their intrinsically photocatalytic activity due to the introduction of the magnetic core, the as-synthesized Fe3O4/BiOCl reserved as high photocatalytic activity as that of BiOCl. The high catalytic activity possibly involved in a coupled structure and the special interfaces, that is, the probability of combination of the carriers could be reduced in this system. Moreover, the superparamagnetic Fe3O4/BiOCl can be not only easily recycled but also fluidized by applying an external magnetic field.
  Zhiying Li , Lin Zhou , Hui Bi , Qiudi Zhang , Xiong Xu , Yuwen Liu and Hui Qiu
  Background and Objective: Chronic Obstructive Pulmonary Disease (COPD) is one of the common respiratory diseases that seriously endanger human health. This study aimed to evaluate the clinical effects of tiotropium bromide on the airway remodelling of patients with stable COPD. Materials and Methods: Sixty-eight patients with stable COPD treated in our hospital were randomly divided into a treatment group (n = 33) and a control group (n = 35). The treatment and control groups were given tiotropium bromide and placebo, respectively for 6 months. The changes of St. George’s Respiratory Questionnaire (SGRQ) score, 6-min Walking Distance (6MWD), pulmonary function and plasma levels of Matrix Metalloproteinase-9 (MMP-9) and Tissue Inhibitor of Matrix Metalloproteinase-1 (TIMP-1) before and after treatment were recorded. Results: The two groups had similar SGRQ score, 6MWD, pulmonary function and levels of MMP-9 and TIMP-1 before treatment (p>0.05). After treatment, the SGRQ score and levels of MMP-9 and TIMP-1 of the treatment group significantly decreased (p<0.05 or p<0.01) and 6MWD and pulmonary function were significantly augmented (p<0.05). Conclusion: Tiotropium bromide has evident therapeutic effects on patients with stable COPD, probably by relieving the airway remodelling.
  Nan Ma , Yun Zhai , Wen-Fa Li , Cui-Hua Li , Shan-shan Wang and Lin Zhou
  Neural network algorithm is very suitable for stock prediction as a model for dealing with complicated relationship. However, the prediction accuracy of neural network algorithm depends largely on the number of hidden nodes and the terminal condition. To follow up the changes in stock prices, a new method is proposed in this study to find out the optimal parameter. The recommended solution is setting fewer hidden nodes and lower holdout percentage. Results show that the proposed method can lessen about 60% of the forecast error such that it can ensure the efficiency and accuracy of the algorithm.
  Run-Bing Li , Lin Zhou , Jin Wang and Ming-Sheng Zhan
  We demonstrate a technique for directly measuring the quadratic Zeeman shift using stimulated Raman transitions. The quadratic Zeeman shift has been measured yielding Δν=1296.8±3.3Hz/G2 for magnetically insensitive sublevels (5S1/2,F=2,mF=0→5S1/2,F=3,mF=0) of 85Rb by compensating the magnetic field and cancelling the ac Stark shift. We also measured the cancellation ratio of the differential ac Stark shift due to the imbalanced Raman beams by using two pairs of Raman beams (σ+, σ+) and it is 1:3.67 when the one-photon detuning is 1.5GHz in the experiment.
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