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Based on complex networks theory, we present two self-organized energy-efficient models for wireless sensor networks in this paper. The first model constructs the wireless sensor networks according to the connectivity and remaining energy of each sensor node, thus it can produce scale-free networks which have a performance of random error tolerance. In the(More)
A fast and sensitive method of coupled high-performance liquid chromatography-electrospray tandem mass spectrometry for the assay of lorazepam in human plasma was developed. Plasma samples were simply treated with acetonitrile to precipitate and remove proteins and the isolated supernatants were directly injected into the HPLC/MS/MS system. Chromatographic(More)
The characteristics of bias caused by split-flow electrokinetic injection (SEKI), a new sample injection method applied in coupled flow injection-capillary electrophoretic system (FI-CE), was investigated using pseudoephedrine hydrochloride, a basic drug and ibuprofen, an acidic drug, as model analytes. It was found that bias imposed by SEKI under the(More)
Effective hemorrhage control becomes increasingly significant in today's military and civilian trauma, while the topical hemostats currently available in market still have various disadvantages. In this study, three low molecular weight silk fibroins (LMSF) were prepared through hydrolysis of silk fibroin in a ternary solvent system of CaCl2/H2O/EtOH(More)
This study describes the synthesis of three novel anionic gemini surfactants via a convenient and easily controllable method, sodium 2,2'-(6,6'-(ethane-1,2-diylbis(azanediyl) bis(4-(octylamino)-1,3,5-triazine -6,2-diyl) bis(azanediyl)diethanesulfonate (C(8)-2-C(8)), sodium 2,2'-(6,6'-(propane-1,3-diylbis(azanediyl)(More)
Fluorometric determination of thiamine requires the conversion of the analyte to fluorescent thiochrome by hexacyanoferrate(III) oxidation in alkaline solution and the isolation of the produced thiochrome from the reaction medium by solvent extraction. It was observed that thiochrome could be concentrated and separated from the reaction medium by(More)
Composite films of bioactive mesoporous calcium silicate (MCS)/silk fibroin (SF) and conventional calcium silicate (CS)/SF were fabricated by the solvent casting method, and the structures and properties of the composite films were characterized. Results of field emission scanning electron microscope (FESEM) indicated that MCS or CS was uniformly dispersed(More)
Traditionally, human embryonic stem cells (hESCs) are cultured on inactivated live feeder cells. For clinical application using hESCs, there is a requirement to minimize the risk of contamination with animal components. Extracellular matrix (ECM) derived from feeder cells is the most natural way to provide xeno-free substrates for hESC growth. In this(More)
This paper describes the preparation and characterization of blend films composed of regenerated silk fibroin (SF) and poly(lactic acid) (PLA). FT-IR and XRD of the SF/PLA blend films with different ratios indicated that the secondary structural transition of SF from Silk I to Silk II was induced upon blending with PLA. The effects of SF/PLA blend ratios on(More)
The modified mesoporous 58S bioglass (SM58S) was prepared through surface modification of the mesoporous 58S bioglass (M58S) with γ-aminopropyl triethoxysilane (KH550). The results of Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) showed that the amino groups were grafted to the surface of M58S after modification with(More)