Xin Dai

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The endophytic bacterial diversity in the roots of rice (Oryza sativa L.) growing in the agricultural experimental station in Hebei Province, China was analyzed by 16S rDNA cloning, amplified ribosomal DNA restriction analysis (ARDRA), and sequence homology comparison. To effectively exclude the interference of chloroplast DNA and mitochondrial DNA of rice,(More)
The rumen hosts one of the most efficient microbial systems for degrading plant cell walls, yet the predominant cellulolytic proteins and fibrolytic mechanism(s) remain elusive. Here we investigated the cellulolytic microbiome of the yak rumen by using a combination of metagenome-based and bacterial artificial chromosome (BAC)-based functional screening(More)
—In this paper, systematic mismatch due to parameter gradients is modeled and analyzed. A new layout strategy with flexible cell placement is proposed. Theoretical analysis shows its property of canceling the mismatch between two devices due to up to n th order gradient effects by using 2 n unit cells for each device. Simulation results show that the(More)
—This work presents a self-calibration algorithm that corrects the linearity errors of pipelined ADCs with a sub-radix architecture, based on the results of simple code density tests. The proposed algorithm identifies discontinuities in an ADC's output histogram data, calculates correction codes for transitions in pipeline stages, and digitally calibrates(More)
Nonalcoholic fatty liver disease (NAFLD) is one of the most common forms of chronic liver disease, and its incidence is increasing year by year. Many efforts have been made to investigate the pathogenesis of this disease. Since 1998 when Marshall proposed the conception of "gut-liver axis," more and more researchers have paid close attention to the role of(More)
The purpose of the study was to devise and evaluate crosslinked nanoassemblies to achieve enhanced drug delivery to tumors. A novel copolymer comprised of polyethylene glycol 5000 (PEG114), Vitamin E (VE) and thioctic acid (TA) with a molar ratio of PEG114:VE:TA at 1:4:4 was synthesized. The resulting PEG114-VE4-TA4 copolymer self-assembled into micelles,(More)
—Frequency drifting is a common problem in an in-ductive power transfer (IPT) system. Conventional autonomous oscillation method for maintaining soft switching is challenged due to the drawbacks of feedback delay and disturbance, resonant failure, and requirements of additional start-up circuit. A novel frequency tracking method based on short current(More)
Gemcitabine is a potent anticancer drug approved for the treatment of pancreatic, non-small-cell lung, breast, and ovarian cancers. The major deficiencies of current gemcitabine therapy, however, are its rapid metabolic inactivation and narrow therapeutic window. Herein, we employed polyethylene glycol-b-distearoylphosphatidylethanolamine(More)
An aerobic, Gram-negative bacterial strain, TH-G33T, was isolated from freshwater sediment of Taihu Lake in China. The taxonomy of strain TH-G33T was studied by using phenotypic and phylogenetic methods. Cells of strain TH-G33T were coccoid rods or rods and formed colourless to pale-pink colonies on nutrient agar. Phylogenetic analysis based on nearly(More)