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(Aim) It is of great importance to find abnormal or pathological brains in the early stage, to save hospital and social resources. However, potential of wavelet-energy is not widely used in this field. (Method) The popular "wavelet-energy" is regarded as a prevalent feature descriptor, which achieves good performance in many applications. In this work, we propose a wavelet-energy based new...
This study developed a multi-ions sensing system that includes pH, potassium, sodium, and chloride ion sensors with a wireless home-care system. The pH sensor was based on a tin oxide (SnO )/indium tin oxide (ITO) glass, and the potassium, sodium, and chloride ion sensors were based on the pH sensor with sensing membrane. The tin oxide (SnO) sensing membrane was deposited on indium tin oxide...
In this paper, the poly-2,5-dimethoxyethynylbenzene (PDMEB) and poly-2,5-dimethoxyethynylbenzene/In2O3 were in-situ synthesized as gas sensing materials. The PDMEB/In2O3 nanocomposite was accessed by two procedures both relying on Pd catalysis: (1) The reaction of ethynyltri-n-buyltin replacing Br belonged to 1,4-dibromo-2,5-dimethoxy benzene, and (2) The step-growth polymerization of PDMEB through...
In this paper, solvent-functionalized CNTs are coated on mass-sensitive quartz crystal microbalance (QCM) devices to study their gas-sensing properties for volatile organic compounds (VOCs) at room temperature. The results indicate that different solvent-functionalized CNTs under the same conditions have the dissimilar response and similar VOCs to the polarity of the solvent show better gas-sensing...
The frequency response and the sensitive mechanics of the ST cut quartz SAW sensor with two-port resonator and FPOL sensitive film are theoretically analyzed. The factors affecting the frequency response and the detective sensitivity are systematically researched with the P-matrix method. The results show that, it is necessary to properly choose the width, the thickness and the material parameters...
Inorganic nanoparticles SnO2 and In2O3 were dispersed using an in situ synthesis technique in one of the polyynes polymer, namely poly-2, 5-dimethoxyethynylbenzene(PDMEB) to prepare organic-inorganic nanocomposites PDMEB/SnO2 and PDMEB/In2O3. The nanocomposites were characterized by FT-IR, which highlighted the chain organization and the plasticizing effect of the nanoparticles on the polymers. Laser...
This work investigates a disposable creatinine potentiometric biosensor based on a pH-sensitive electrode and an ammonium ion-selective electrode. An enzyme, creatinine iminohydrolase (CIH) was immobilized directly onto the surface of the electrodes by the entrapment method. According to the experimental results, the creatinine biosensors based on the pH-sensitive electrode and ammonium ion-selective...
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