통합 검색 | Korea Science

조용성
- 한국임상수의학회지
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- 제14권1호
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- pp.88-92
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- 1997
The present experiment was investigated to compare tretment effect of drug therapy, acupuncture therapy, the combination of acupuncture and drug therapy, and electro-acupuncture therapy using 152 calves with respiratory deseases. Among 20 cases of drug therapy group, 16 cases (80%) were recovered and 4 cases (20%) were ineffective. Among 28 cases using Su Qi in acupuncture therapy group, 21 cases using San Tai, An Bi and Fei Shu, 17 cases (72%) were available and 7 cases (28%) were unavailable. Among 28 cases of the combination group of acupuncture and drug therapy, 24 cases(86%) were recovered with the highest tretment effect in Su Qi and drug therapy. In addition, among 24 cases of the combination group of acupuncture and drug therapy, 20 cases(84%) were effective and 4 cases (16%) were ineffective with lower effective rate compared by Su Qi and drug therapy in San tai, An bi and Fei shu and drug therapy. And among electro-acupuncture group using Fei Shu $[left({\ominus}), right({\oplus})],$ 22 cases (82%) were effective and 6 cases (18%) were ineffective.
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Kang-Hee Lee;Heung-Seok Kang;Du-Ho Hong;Jong-In Kim
- Nuclear Engineering and Technology
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- 제55권3호
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- pp.1118-1124
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- 2023
Experimental study on the fluidelastic instability (FEI) of a curved tube bundle in single phase downward cross flow is investigated for the design qualification and analysis input preparation of helical coiled steam generator tubing. A 6×9 normal square curved tube array with equal and different vertical/horizontal pitch-to-diameter ratio was under-tested up to 6 m/s in term of gap flow velocity to measure the critical velocity for FEI. The critical velocity for FEI was measured at the turning point from the vibration amplitude plot along the gap flow velocity. Our test results were compared with straight tube results and published data in the design guideline. The applicability of the current design guidelines to a curved tube bundle is also assessed. We found that introducing frequency difference in a curved tube array increases the critical velocity for fluidelastic instability.
https://doi.org/10.1016/j.net.2022.11.007 인용 PDF

김창선
- 전력전자학회논문지
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- 제10권6호
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- pp.592-597
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- 2005
푸시 풀 포워드 컨버터는 넓은 입력범위에서 저전압 대전류 특성이 좋고 싱글 EI-EE 코어에 출력 인덕터와 변압기 그리고 입력 필터 등 모든 자성소자들을 포함시킴으로써 집적화할 수 있다. 회로의 여러 변수들에 대한 효율 비교를 통해서 집적화된 싱글 코어 푸시 풀 포워드 컨버터에 대해 고찰하였다. 푸시 풀 포워드 컨버터의 변압기는 Nicera사의 5M FEE 18/8/10C와 NC-2H FEI32/8/10C 코어를 이용하였다. 컨버터의 정격은 입력 전압 $36\~72V$이며 출력은 3.3V, 30A이다. NC-2H FEI32/8/10C코어를 사용하였을 경우 스위칭 주파수가 200kHz이고 부하가 11A일 때 $83.5\%$의 최고 효율이 측정되었다. 전부하(full load)시의 효율은 $76.4\%$, 반부하(half load)일 경우에는 $82.95\%$의 효율이 각각 측정 됐다.
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김정상;나창수
- Applied Microscopy
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- 제27권3호
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- pp.243-255
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- 1997
To investigate detoxification effects of aqua-acupuncture; Bovis Calculus and Susi Fei extract against the toxicity of aconitine were studied. We examined the GOT activities, GPT activities, $\gamma-GPT$ activites, ALP activities and ultrastructural changes of hepatocytes in rats. The GOT activities were decreased in the aqua-acupuncture group compared with control at the 48-hours and 96-hours. The $\gamma-GTP$ and ALP activities were decreased in the aqua-acpuncture group compared with control at 96-hours. We observed the ultrastructural changes of hepatocytes compared the detoxification effects of acua-acupuncture with toxicity of aconitine by transmission electron microscope. In the 24-hours group, the cisternae of rough and smooth endoplasmic reticulum hepatocytes are dilated more or less. In the 48-hours group, the nuclear envelope are irregured, and chromatins of nucleus are condensed. The cisternae of rough endoplasmic reticulum are dilated/branched. In the 96-hours group, the rough and smooth endoplasmic reticulum are well developed in aqua-acpuncture group compared with control. These results suggest that acua-acpuncture groups of the Bovis calculus and Susi fei extract showed detoxification effects against cytotoxicity of aconitine in the hepatocyte of rats.
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