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Zhu Y.D.,Jiangsu Union Technical Institute
Recent Advances in Electrical and Electronic Engineering | Year: 2016

The compression process of traditional image data compression method is complex, and has disadvantages like high computational complexity and low compression ratio. An image data compression transmission method based on singular value decomposition and wavelet transform is proposed and applied to multimedia network, the shortcomings of traditional method is analyzed, the singular value decomposition is applied to multimedia network image, and the energy ratio threshold is set, and relatively larger singular values are selected by self-adaption to complete the first stage compression of multimedia network image data. The threshold quantization method is utilized to process the high frequency coefficients under various resolution, the high frequency coefficients whose absolute value does not exceed the threshold is set to zero, so as to complete the image re-compression. The simulation results show that the proposed method can effectively enhance the image compression effect and reduce the complexity of the algorithm. © 2016 Bentham Science Publishers. Source

Yan S.,Jiangsu University | Yan S.,Jiangsu Union Technical Institute | Zhou L.,Jiangsu University
Jiangsu Daxue Xuebao (Ziran Kexue Ban)/Journal of Jiangsu University (Natural Science Edition) | Year: 2015

In order to solve the changing contents and the simple grouping of packet in current watermarking technologies, a new watermarking scheme was proposed based on theoretical analysis and calculation. The packet delay was modulated subtly in the interval-based changing slot network stream watermarking scheme. The code division multiplexing was used to extend the watermark information and improve the error correction ability. To test and verify the performance of new technology, various network environments were simulated to complete many tests, and the detection rates were calculated by two ways. The experimental results show that the detection rate of new scheme is increased by 28% than the original group packet when the jitter average is more than 6 ms. When the jitter average is less than 10 ms, the mean detection error rate of new technology is less than 0.49, while the rate of original way is more than 0.5. The comparison shows that the new technology can improve the detection rate clearly with high performance. ©, 2015, Journal of Jiangsu University (Natural Science Edition). All right reserved. Source

Yang C.,Jiangsu Union Technical Institute | Yang C.,China Pharmaceutical University | Wang J.-S.,China Pharmaceutical University | Kong L.-Y.,China Pharmaceutical University
Chinese Journal of Natural Medicines | Year: 2011

Aim: To study the chemical constituents of Taxus canadensis. Method: The constituents were isolated by various chromatographic methods, and the chemical structures were elucidated on the basis of spectral analysis. Results: Six known compounds were isolated and identified as p-hydroxybenzoic acid (1), putraflavone (2), sequoiavone (3), 7, 13-dideacetyl-9, 10-debenzoyltaxchinin C (4), baccatin VI (5) and taxumairone A (6). Conclusion: Compounds 1 and 2 were isolated from this genus for the first time, and compounds 3-6 were isolated from Taxus canadensis for the first time. © 2011 China Pharmaceutical University. Source

Yuping C.,Jiangsu Union Technical Institute
Proceedings - 14th International Symposium on Distributed Computing and Applications for Business, Engineering and Science, DCABES 2015 | Year: 2015

This paper presents a quantum particle swarm optimization solutions for the problem of license plate location, the first image of the vehicle local area adaptive illumination compensation image preprocessing, improving the quality of the picture. Then use the YCbCr color model signals a band compression to achieve illumination compensation. Based on this paper proposes a quantum particle swarm optimization algorithm, using less number of QPSO algorithm parameters, randomness is strong, and can cover all the solution space, to ensure global convergence of the algorithm. This paper presents the results of three pieces of plate positioning images prove local feature enhancement algorithm QPSO algorithm can perform feature extraction and stable positioning works well. © 2015 IEEE. Source

Yu D.,China Pharmaceutical University | Li M.,China Pharmaceutical University | Tian Y.,Jiangsu Union Technical Institute | Liu J.,China Pharmaceutical University | And 2 more authors.
Life Sciences | Year: 2015

Aims Luteolin is a falconoid compound that has an antioxidant effect, but its contribution to ROS-activated MAPK pathways in ischemia/reperfusion injury is seldom reported. Here, we have confirmed that it exhibits an antioxidant effect in myocardial ischemia/reperfusion injury (MIRI) by inhibiting ROS-activated MAPK pathways.Main methods We exposed rat hearts into the left anterior descending coronary artery (LAD) ligation for 30 min followed by 1 h of reperfusion. Observations were carried out using electrocardiography; detection of hemodynamic parameters; and testing levels of lactate dehydrogenase (LDH), creatine kinase (CK), total superoxide dismutase (T-SOD), and malondialdehyde (MDA). Mitogen-activated protein kinase (MAPK) pathway was measured by western blot and transmission electron microscopy was applied to observe the myocardial ultrastructure. Rat H9c2 cell in 95% N2 and 5% CO2 stimulated the MIRI. Oxidation system mRNA levels were measured by real-time PCR; mitochondrial membrane potential and apoptosis were measured by confocal microscopy and flow cytometry; western blot analysis was used to assay caspase-3, -8, and -9 and MAPK pathway protein expression; the MAPK pathway was inhibited using SB203580 (p38 MAPK inhibitor) and SP600125 (c-Jun NH2-terminal kinase inhibitor) before H9c2 cells were exposed to hypoxia/reoxygenation injury to show the modulation of the changes in ROS generation, cell viability and apoptosis.Key findings In vivo, luteolin can ameliorate the impaired mitochondrial morphology, regulating the MAPK pathway to protect MIRI. In vitro, luteolin can affect the oxidation system, mitochondrial membrane potential and MAPK pathway to anti-apoptosis.Significance These results reveal a ROS-MAPK mediated mechanism and mitochondrial pathway through which luteolin can protect myocardial ischemia/reperfusion injury. © 2014 Elsevier B.V. All rights reserved. Source

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