Luo X.,Northeast Normal University |
Luo X.,Yili Normal University |
Li F.,Northeast Normal University |
Xu B.,Northeast Normal University |
And 2 more authors.
Journal of Materials Chemistry | Year: 2012
A photovoltaic electrode consisting of polyoxometalate (SiW 12) and zinc oxide (ZnO) was fabricated on indium tin oxide (ITO) glass by one-step electrodeposition. The addition of SiW 12 strongly influences the morphology and crystallographic orientation of the ZnO. The photovoltaic properties of the ZnO film and the SiW 12-ZnO composite films were investigated via solar cell assembly. Both transient photocurrent and current-voltage curve measurements demonstrate that the photocurrent and power conversion efficiency of the SiW 12-ZnO composite film were markedly enhanced in comparison with that of the ZnO film. Based on the results of fluorescence quenching measurements, the enhanced photovoltaic effect should be attributed to the occurrence of the photoinduced electron transfer between polyoxometalate and ZnO, which increases the efficient dissociation of excited electron-hole pairs (excitons). This journal is © The Royal Society of Chemistry 2012.
Lv Z.-W.,Yili Normal University
Chinese Journal of Tissue Engineering Research | Year: 2015
BACKGROUND: The electrocardiogram and hemodynamics are effective indicators for evaluation of cardiac function. It has been confirmed that aerobic exercise or bone marrow stem cell mobilization exert good effects on the electrocardiogram and hemodynamics of myocardial infarction animals, and their combination effects have not been reported. OBJECTIVE: To investigate the effects of aerobic exercise combined with bone marrow stem cell mobilization on the electrocardiogram and hemodynamics of myocardial ischemia aniamals. METHODS: Ligation of the rat left anterior descending coronary artery was done to make acute myocardial infarction models. Then, rats were divided into aerobic exercise, cell mobilization and combination group (aerobic exercise+cell mobilization). At 1 week after modeling, rats in the aerobic exercise group and combination group were subject to aerobic exercise in electric treadmill, 5 days per week, totally 8 weeks. At 3 hours of modeling, the rats in the cell mobilization group and combination group were given subcutaneously normal saline-diluted recombinant human granulocyte colony stimulating factor, 10 μg/(kg • d), continuously for 5 days. After 8 weeks, electrocardiogram and part of hemodynamic indexes were detected for evaluation of cardiac function. RESULTS AND CONCLUSION: In rats with myocardial infarction, left ventricular systolic pressure and ±dp/dtmax were reduced significantly, but the left ventricular end diastolic pressure was increased, indicating cardiac insufficiency. An increase in left ventricular systolic pressure and ±dp/dtmax was found in the aerobic exercise and cell mobilization groups, but the left ventricular end diastolic pressure was decreased, indicating that both the aerobic exercise and bone marrow stem cell mobilization could improve the myocardial contraction and diastolic function. Rats in the combination group exhibited similar assessment indicators to normal control rats, indicating the combination of the aerobic exercise and bone marrow stem cell mobilization can strongly enhance the performance of myocardial contraction and myocardial systolic/diastolic functions are both improved significantly.
Zhang J.-D.,Yili Normal University |
Huang X.-Y.,Nanyang Normal University
Physica B: Condensed Matter | Year: 2015
The structural, electronic and elastic properties of U2S3type Nb2N3under pressure ranging from 0 GPa to 100 GPa are investigated by plane-wave pseudopotential density functional theory with the generalized gradient approximation in this paper. The results at zero pressure are in good agreement with available theoretical results. The properties of U2S3type Nb2N3are compared to the new synthetic superhard material η-Ta2N3. The results show that U2S3type Nb2N3is hard to compress, and expected to have comparable hardness to η-Ta2N3. © 2014 Elsevier B.V.
Liang Y.,Dalian University of Technology |
Liang Y.,Yili Normal University |
Wang X.,Dalian University of Technology
Physica A: Statistical Mechanics and its Applications | Year: 2014
In this paper, we propose a pinning synchronization control scheme in complex networks with non-delay and delay couplings, which uses two switched periods to provide intermittent control. Criteria ensuring global exponential synchronization are obtained based on strict mathematical proofs. Meanwhile, it is shown that the delay does not depend on the control width and the non-control width. Moreover, we give a method for calculating the minimum number of pinning nodes required to achieve exponential synchronization. Finally, a numerical simulation shows the effectiveness of the pinning synchronization control scheme via an intermittent control method with two periods. © 2013 Elsevier B.V. All rights reserved.
Brad K.,Yili Normal University |
Chen C.,Henan Institute of Science and Technology
Tropical Journal of Pharmaceutical Research | Year: 2013
Purpose: To improve the hydrophobicity of diosmetin, the complex of diosmetin and lecithin was prepared and its physicochemical properties were characterized in this study. Methods: The complex of diosmetin and lecithin was prepared by solvent method. The physicochemical properties of the complex were investigated by ultraviolet-visible spectrometry (UV/Vis), infrared spectrometry (IR), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and x-ray diffractometry (XRD). Results: Based on UV and IR analysis, there was no significant difference between the physical mixture and the complex while SEM showed that diosmetin in the complex did not present a crystal appearance but rather was dispersed in lecithin. DSC thermograms of the complex mainly showed that the presence of lecithin caused the characteristic endothermal peaks of diosmetin to disappear while x-diffractograms showed that the crystalline peaks of diosmetin was absent in the complex. Conclusion: The complex is held together by non-covalent-bond, and thus a new compound was not formed. Diosmetin in the complex is molecularly dispersed in the lecithin matrix. © Pharmacotherapy Group, Faculty of Pharmacy, University of Benin, Benin City, 300001 Nigeria. All rights reserved.