Raisins (Thailand), dried mangos (Philippines), and dried figs (Iran) were gamma-irradiated (0~5 kGy), and their quality and detection characteristics were investigated. Microbiological characteristics were at safe levels when samples were irradiated at higher than 3 kGy. In color change after irradiation, dried mangoes were the most sensitive. Photostimulated luminescence (PSL) measurement was not applicable to dried fruits, showing negative or intermediate values for the irradiated samples. Thermoluminescence (TL) measurement was good for dried figs, exhibiting a glow curve in range of 150~200 o C, where the signal intensity was dependent on the irradiation dose. Electron spin resonance (ESR) measurement was suitable for raisins and dried mangos, resulting in dose-dependent radiation-induced sugar radical signals.
-Most cases of power transformer failure are caused by physical factors linked to the transient vibrations of multiple 120Hz combinations. In addition, the noise generated in the transformer from this vibration not only directly contributes to the worsening of the work environment but also causes psychological stress, resulting in the worsening of the workers efficiency and of the living environment of the inhabitants around the power plant. Thus, to remedy these problems, the mechanical-excitation forces working on a power transformer were categorized in this study, and the mechanical-damage mechanism was identified through the vibration transfer paths acting on machines or structures. In addition, a study on active noise cancellation in a transformer using the FXLMS algorithm was conducted to develop a system that is capable of multiple-sound/channel control, which resulted in the active noise reduction effect when applied on the field.
The purpose of this study aimed to investigate appropriate parameters for clinical use by measuring effects of inter-digit-intervals (IDIs) and response modes on the dichotic 3 digit test. The dichotic 3 digit tests were performed in four different IDI conditions (500, 750, 850, and 1,000 ms) in free-recall response mode and in three attention modes (Free recall, Precued Rt or Precued Lt) with a 750 ms IDI appearing in a performance of 70%. Twenty adults, 10 males and 10 females with normal hearing sensitivity participated. The results of this study were as follows: first, the dichotic 3 digit recognition performance was increased as IDI increased from 500 ms to 850 ms and decreased as IDI increased from 850 ms to 1,000 ms. Second, performances by response modes in 750 ms condition were measured that score of ear which was given cue were higher than opposite ear. Recognition scores of Free-recall, Precued-Rt, and Precued-Lt conditions were 69.00%, 93.75%, and 72.00% for the right ear and 65.75%, 64.75%, and 83.75% for the left ear, respectively. Also, ear advantages appeared 3.25% REA, 28.00% REA, and 11.75% LEA in Free-recall, Precued-Rt, and Precued-Lt conditions, respectively. Performances were also higher in Precued-recall conditions than in Free-recall condition. The results revealed that dichotic 3 digit recognition scores changed by IDIs and response modes. It showed that the 850 ms in IDI in free-recall mode was a useful parameter clinically applicable in dichotic 3 digit test. Moreover, the 750 ms paradigm of IDI and Precued recall of response modes can be useful in clinical setting.
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