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유동주,송은영 대한의용생체공학회 1995 의공학회지 Vol.16 No.2
In this paper we report the device of a multi-channel clinical instrument developed for determi¬nation of the levels of the urinary urobilinogen, glucose, ketone, bilirubin, protein, ascorbic acid, nitrite, pH, occult-blood, specific gravity, and leukocytes semiquantitatively. The test parameters are expressed on the dry test strips as a range of color intensities by chemical reactions. The instrument measures the value of each substance by reading the reflectance light emanated from the test strips. We also designed the reagent strip cassette and loader in order to intercept the outside interference. The loader can be operated semi-automatically. The light source is consisted on light emitting diodes at three specific wavelengths (560 nm, 610 nm, 650 nm). Precision of the system was evaluated by testing a series of commercial control urine samples. Furthermore, the performance of the instrument was compared with two other test methods on the urine samples from 100 persons. Our results showed a good repeatability between tests and a satisfactory agreement between the readings by our instrument and visual evaluation.
유동주,윤주희,이상욱,윤창상 한국물리학회 2021 Current Applied Physics Vol.27 No.-
The present study devised a method of representing and analyzing the mechanical behavior of fabrics in the clothing care system and examined the mechanical movement under various conditions using simulations and an image analysis program called TEMA Motion-Outline tracker. Through this, we proposed an algorithm to improve dust removal by finding conditions that could optimize the mechanical behavior of fabrics. The complex movement algorithm with various RPM configurations could change the number and location of nodes and antinodes. The algorithm effectively removed the dust at all locations, and the improved performance was also seen for real clothes.