Jian-guang Zhang

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Flowers of Rosa chinensis are widely used in traditional Chinese medicine as well as in food industry. Flavonoid glycosides are believed to be the major components in R. chinensis that are responsible for its antioxidant activities. In this work, a liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method was developed for analysis of flavonoid(More)
The e-government websites (EGWS) provide comprehensive government information contents and online services for residents and become an important interactive platform between province authorities and residents. In this article, we construct a set of systematic, objective, effective, and service-oriented EGWS performance evaluation model, and utilize the(More)
OBJECTIVE To evaluate clinical effects of pedicle fixation without bone fusion in treating thoracolumbar fractures through paraspinal approach. METHODS From January 2006 to January 2009, 25 patients (15 males and 10 females) with thoracolumbar fractures were treated. The average age was 39.3 years,ranged from 17 to 49 years. According to classification,(More)
OBJECTIVE To investigate clinical features and treatments of cervical spinal injury in aged patients. METHODS From July 2006 to October 2011, 27 patients with cervical spinal cord injury were divided into experiment group, including 20 males and 7 females with an average age of 69 years old (ranged 65 to 78 years old). The other 22 patients with the same(More)
The theoretical solving of dynamic analysis on the enclosed gear-driven system is complicated, and only the surface vibration data can be tested in the experiment. In view of this, 3D modeling is carried out on a given secondary planet reducer to create a finite element model and perform finite element modal analysis. Via the modal test, the correctness of(More)
OBJECTIVE A comparative dose distribution study has been undertaken between proton beam therapy (PBT), 3-dimensional conformal radiation therapy (3D-CRT) and intensity-modulated radiation therapy (IMRT) in the treatment of hepatocellular carcinoma (HCC), so as to assess the potential advantages of PBT. METHODS Dose volume histograms (DVHs) were compared(More)
MicroRNAs represent a class of non-coding endogenous small RNAs ~22nt in length that play important regulatory roles in plant growth and development. Although an explosive increase in number of plant miRNAs have been documented in recent years, by cloning or computational approaches, only limited miRNAs have been reported in potato, which is an important(More)
In this paper, a multiscale markov random field method for segmentation of the synthetic aperture radar (SAR) images is proposed. A classifier which inherits the strongpoint of the markov random field (MRF) and the multiscale autoregressive (MAR) model is designed. The MAR models are utilized to extract the multiscale feature of SAR image, which is used to(More)
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