9For on-line, non-contact measurement of moisture content (MC) of spray dried 10 products, a capacitance sensing system was developed using pairs of copper plates 11 attached to the perimeter of the spray dryer measuring cylinder. The plates formed 12 capacitors which were sensitive to changes in dielectric properties, which in turn were 13 related to MC. The self-built system was tested on spray dried gelatin powders in three 14 modes: a) an off-line mode to test the capabilities of the sensor at different MC levels 15 (4% to 44% (d.b.)); and b) an on-line mode to measure MC of samples passing through 16 the sensor enclosure. Results indicated this system was feasible to measure MC both 17 statically and dynamically, but it had better performance for off-line samples (R 2 =0.98, 18 RMSE=1.9%); c) this system was also used in an ECT mode and showed the capability 19 to reflect spatial distribution of deposition during spray drying.
As fish is one source of the 'big eight' food allergens, the prevalence of fish allergy has increased over the past few years. In order to better understand fish allergy, it is necessary to identify fish allergens. Based on the sera from fish-allergenic patients, a 28 kDa protein from local mackerel (Scomber japonicus), which has not been reported as a fish allergen, was found to be reactive with most of the patients' sera. The 28 kDa protein was analyzed by MALDI-TOF-MS (Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry). Mascot search in NCBI database (Date: 08/07/2010) showed that the top protein matched, i.e. triosephosphate isomerase (TPI) from Xiphophorus maculatus and Poecilia reticulata, had a mowse (molecular weight search) score of 98. In addition, TPI from Epinephelus coioides also matched this mackerel protein with a mowse score of 96. Because TPI is considered as an allergen in other non-fish organisms, such as lychee, wheat, latex, archaeopotamobius (Archaeopotamobius sibiriensis) and crangon (Crangon crangon), we consider that it may also be an allergen in mackerel.
As an important part of the electric locomotive in railway transportation, the sensing and inspection of the pantograph has a significant effect on the safe operation of the train. In general, the pantograph carbon slip detection items include slide wear detection, slip strip crack detection, carbon slip fall-block detection and slip strip wear detection. The emergence and development of structured light measurement technology with 3D sensors provide new technical means for the acquisition of spatial 3D information. The three-dimensional data can not only obtain more information but also reduce the data deviation, thereby improving the measurement accuracy and work efficiency. At present, few studies have been conducted on the slide block and partial wear of the carbon slide. Therefore, this paper studies the detection of the pantograph slide block based on 3D sensor measurement technology. The experimental results indicate that it is feasible to adopt 3D measurement technology to detect the fall-block of the pantograph slide. In addition, a sound detection effect can also be obtained.
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