Li-peng Zhang

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A new strategy was applied to elucidate the structure of a polysaccharide from abalone gonad (AGSP). It was hydrolyzed by 0.05 M, 0.2 M, 0.5 M, and 2.0 M TFA at 100 °C for 1 h, sequentially. Every hydrolysate was ultrafiltrated (3000 Da) to collect oligo- and monosaccharides, and the final retentate was further hydrolyzed with 2.0 M TFA at 110 °C and 121 °C(More)
The stabilized soil is an important material used widely in road construction. The mixture ratio is an important factor impact on its quality directly, even influences the quality of highway construction. The electronic belt scale is used to weight and control the material flow by adjusting the motor speed of belt conveyor to control the mixture ratio of(More)
OBJECTIVE To evaluate the initial clinical characteristics, the response to treatment, and the outcome in adult patients with Evans syndrome. METHODS The clinical data of 84 adult patients (20 males, 64 females) with Evans syndrome diagnosed at our center between 1984 and 2007 were retrospectively analyzed. RESULTS The patients were followed up for a(More)
Multiple cell classes have been found in the primary visual cortex, but the relationship between cell types and spatial summation has seldom been studied. Parvalbumin-expressing inhibitory interneurons can be distinguished from pyramidal neurons based on their briefer action potential durations. In this study, we classified V1 cells into fast-spiking units(More)
Polar organic chemical integrative sampler (POCIS) has been recently documented for the detection of polar organic compounds in the environment to achieve a time weighted average concentration. So it is an important complimentary for spot sampling. POCIS was examined for its sampling efficiency for four kinds of estrogenic compounds (EDCs: estrone,(More)
The occurrence of estrogens in the aquatic environment has become a major concern worldwide because of their strong endocrine disrupting potency. In this study, concentrations of four estrogenic compounds, estrone (E1), 17β-estradiol (E2), 17α-ethynylestradiol (EE2), estriol (E3) were determined with liquid chromatography-tandem mass spectrometry analyses(More)
IntroductIon Ectopically located hyperfunctioning parathyroid gland(s) are responsible for approximately 6–16% of hyperparathyroidism cases, in which about 6% can be ascribed to ectopic growth in the mediastinal site.[1] Treatment of ectopic adenomas usually requires resection. There are various techniques to resect ectopic parathyroid glands, which are(More)
Fine Yin-Shang bronzes containing lead with puzzlingly highly radiogenic isotopic compositions appeared suddenly in the alluvial plain of the Yellow River around 1400 BC. The Tongkuangyu copper deposit in central China is known to have lead isotopic compositions even more radiogenic and scattered than those of the Yin-Shang bronzes. Most of the Yin-Shang(More)
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