• The Transactions of the Korean Institute of Electrical Engineers C
• /
• v.49 no.11
• /
• pp.589-595
• /
• 2000

In this papre, AC losses of Bi-2223 tapes with different twist pitch of superconducting core were fabricated, measured and analyzed. These samples produced by a powder-in-tube method are multi-filamentary tape with Ag matrix. Also, it's produced by non-twist and different twist pitch(8, 10, 13, 30, 50, 70 mn). The critical current measurement was carried out under the environment in Liquid nitrogen and in zero field by 4-probe method. And the AC loss measurement was carried out under the environment of applied time-varying transport current by transport method. From experiment, the critical current is larger non-twist than twisted filament. And, the AC loss by Norris equation is higher non-twisted tape than 13mm twisted tape. Also, it is confirmed that of AC loss of tape having non-twist pitch larger than those having differnet twist pitch.

• International Journal of Fuzzy Logic and Intelligent Systems
• /
• v.6 no.2
• /
• pp.95-99
• /
• 2006

A tape feeder of a SMD(Surface Mount Device) mounter is a device that sequentially feeds electronic components on a tape reel to the pick-up system of the mounter. As components are getting much smaller, feeding accuracy of a feeder becomes one of the most important factors for successful component pick-up. Therefore, it is critical to keep the feeding accuracy to a specified level in the assembly and production of tape feeders. This paper describes a tape feeder inspection system that was developed to automatically measure and to inspect feeding accuracy using machine vision. It consists of a feeder base, an image acquisition system, and a personal computer. The image acquisition system is composed of CCD cameras with lens, LED illumination systems, and a frame grabber inside the PC. This system loads up to six feeders at a time and inspects them automatically and sequentially. The inspection software was implemented using Visual C++ on Windows with easily usable GUI. Using this system, we can automatically measure and inspect the quality of ail feeders in production process by analyzing the measurement results statistically.

• Proceedings of the KIEE Conference
• /
• 1999.07a
• /
• pp.274-276
• /
• 1999

Transport current is the HTS tape generates the self field loss. To measure the self field loss, rectangular voltage tap has been used. In this paper, self field loss was measured using the spiral voltage tap method. Result of the measurement was compared with that of the theoretical.

• Journal of the Korean Society of Physical Medicine
• /
• v.15 no.2
• /
• pp.75-81
• /
• 2020

PURPOSE: The purpose of this study was to investigate the effect of taping method using elastic tape and non-elastic tape on pain, grip strength and muscle activity in middle-aged female patients with lateral epicondylitis. METHODS: The subjects were 40- to 50-year-old female patients with lateral epicondylitis. A total of 22 subjects were divided into two groups, and each group had 11 patients. The intervention was carried out three times a week for 4 weeks. One group applied tape using elastic tape (ETG) while the other group applied tape using non-elastic tape (NETG). The measurement factors were pain, grip strength, and muscle activity. Pain was measured using VAS. Grip strength was measured using a grip dynamometer, and muscle activity was measured using EMG in the affected extensor carpi radialis brevis. Changes in interventions were compared among the groups using a paired t-test. The comparison between groups compared delta values (Changed values) between pre- and post-intervention using an independent t-test. RESULTS: In both groups, there was a statistically significant decrease in VAS. However, there was no statistically significant decrease in the delta value of VAS between ETG and NETG. In both groups, grip strength and muscle activity increased after intervention. There were statistically significant differences in delta values between ETG and NETG. CONCLUSION: Taping is a good intervention method for patients with lateral epicondylitis. Both elastic tape and non-elastic tape were effective. In particular, taping using elastic tape is an effective method for improving muscle function with pain reduction.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
• /
• 2003.02a
• /
• pp.257-260
• /
• 2003

Bi-2223 tape is one of the most widely used HTS tapes for power application. This paper presents the basic properties such as temperature and resistivity rise of the Bi-2223 tape which is exposed to the over current. Temperature and resistivity were measured by E-type thermocouple and voltage taps. Results of the measurement showed that rise of voltage depended on the magnitude of the over current until several times of the rated current. When the current largely exceeded the rated current, rise of voltage depended on the magnitude of the resistivity of the Ag matrix because temperature of the matrix increased to a great extend.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
• /
• 2002.02a
• /
• pp.153-155
• /
• 2002

The thermal conductivity of Ag and Ag alloys at low temperature (10~110 K) were evaluated by direct measurement technique. It was observed that thermal conductivity decreased with increasing the content of alloying elements such as Mg and Cu. Thermal conductivity of pure Ag tape at 20 K was measured to be 2794 W/m$\cdot$K. On the other hand, the corresponding values of Ag/Al tape and Ag/Al/sus315L tape were 1235 and 352 W/m$\cdot$K, respectively, indicating 2 to 8 times lower than that of pure Ag tape.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.1010-1012
• /
• 2004

AC loss is an important factor in the development of superconducting tapes and superconducting power applications. In this paper we measured and compared characteristics of BSCCO tape and YBCO Coated Conductor(YBCO CC). BSCCO tape was fabricated by PIT method. We measured critical current density and transport current loss of it. Also, YBCO CC tape consist of substrate. buffer, YBCO and metal layers. We measured critical current density on variations of external magnetic field and transport current loss of these cases. The results of measurement show that normalized critical current of YBCO CC is smaller then that of BSCCO tape in the external magnet field. According to the results. measured loss and calculated of the YBCO CC show the same tendency.

• Nuclear Engineering and Technology
• /
• v.40 no.1
• /
• pp.93-98
• /
• 2008

Several adhesive tapes have been studied in terms of their suitability for securing gold wires into positions for neutron flux measurements in the reactor core and irradiation facilities surrounding the core of the Open Pool Australian Light water (OPAL) reactor. Gamma ray spectrometry has been performed on each irradiated tape in order to identify and quantify activated components. Numerous metallic impurities have been identified in all tapes. Calculations relating to both the effective neutron shielding properties of the tapes and the error in measurement of the $^{198}Au$ activity caused by superfluous activity due to residual tape have been made. The most important identified effects were the prolonged cooling times required before safe enough levels of radioactivity to allow handling were reached, and extra activity caused by residual tape when measured with an ionisation chamber. Knowledge of the most suitable tape can allow a minimal contribution due to these effects, and the use of gamma spectrometry in preference to ionisation chamber measurements of the flux wires is shown to make all systematic errors due to the tape completely negligible.

• Journal of Sasang Constitutional Medicine
• /
• v.29 no.2
• /
• pp.202-209
• /
• 2017

Objectives The purpose of this study is to investigate the effect of Choweseuncheng-tang on Underlying Edema and weakness by Deep Vein Thrombosis(DVT) in a 74-year-old female patient. Methods Patient was treated with Jowiseungcheong-tang. Patient's symptom was assessed NRS, Tape measurement, Motor grade. The treatment was executed three times everyday from May 19th to May 23th, 2017. Patient was observed from May, 18th to May, 23th. Results After 5 days of using Jowiseungcheng-tang, patient's edema symptoms and weakness were evaluated by NRS, Tape measurement, Motor grade. After the treatment, Tape measurement score decreased. The score of Motor grade increased. However, the score of NRS was nonsignificant. Conclusions The results suggest that Jowiseungcheng-tang can be a valuable option in treating Underlying Edema and weakness by DVT.

• Progress in Superconductivity and Cryogenics
• /
• v.7 no.4
• /
• pp.10-13
• /
• 2005

Transport current and magnetic field which is generated by transport current make AC current - AC mag-netic field condition(AC-AC condition) in AC power application system using HTS tape. Therefore, characteristics of AC loss under the AC-AC condition are necessary to estimate AC loss of power device with accuracy such as HTS transformer. In this paper, we researched transport current loss, magnetization loss by perpendicular magnetic field and total loss which is represented as summation of both losses under the AC-AC condition in single HTS tape. As a result, magnetization loss showed increasing behavior under 65mT and decreasing behavior upper 65mT by influence of transport current. Transport current loss was increased continuously through out whole measurement ranges in the AC-AC condition. Total loss in HTS tape was dominated entirely by magnetization loss.