• Title/Summary/Keyword: spinnig

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Analysis of Non-uniform Tension Effect on Dynamic Characteristics of Spinning Circular Plates in the Wafer Cutting Machine (웨이퍼 가공기에서 회전 원판의 동특성에 미치는 불균일 장력의 영향 분석)

  • 임경화
    • Journal of KSNVE
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    • v.8 no.2
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    • pp.324-330
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    • 1998
  • The forced vibration analysis of the outer-clamped spinnig annular disk with arbitrary in-plane is formulated to investigate the influence of non-uniform tension on the cutting accuracy of wafer cutting machine. The arbitrary in-plan force along the outer edge of an annular plate is expressed as a Fourier series. Galerkin method and modal superposition method are employed to obtain the forced responses under the static force and the impulse force in astationary coordinate. Through qualitative and quantitative analyses, it can be found that forced and impulse responses are sensitive to the non-uniformity of in-plane force, which can bring a bad effect to the accuracy of wafer cutting process. Also, in case of a spinning disk with non-uniform in-plane force, critical speed is required to define in a different way, compared with conventional definition in axi-symmetrical spinning disk.

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One Case of Rhabdomyolysis After Spinning Exercise (스피닝 운동 후 발생한 횡문근융해증 치험 1례)

  • Jeong, Ho-young;Nam, Seung-kyu;Cho, Chung-sik
    • The Journal of Internal Korean Medicine
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    • v.37 no.5
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    • pp.711-716
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    • 2016
  • Objective: To report a case of rhabdomyolysis that occurred after spinning exercise. Methods: A patient diagnosed with rhabdomyolysis received Korean medical treatment and Western medical treatment for 6 days. We observed the patient for 13 days. Clinical symptoms were evaluated with a Numerical Rating Scale (NRS) and laboratory tests, which included Liver Functional Test (LFT), Renal Functional Test (RFT), creatinine phosphokinase (CPK), myoglobin, and urine tests. Results: After treatment, the clinical symptoms were improved. In this case, acute renal failure did not occur. Laboratory results, including AST, ALT, CPK, and LDH, were also improved. Conclusions: Rhabdomyolysis can be treated cooperatively with Korean and western medical cooperative treatment.

Studies on disease of catfish, Silurus asotus, in Korea. III. Edwardsiella ictaluri infection. (한국산 메기(Silurus asotus)의 질병에 관한 연구 III. Edwardsiella ictaluri 감염증)

  • Park, Sung-Woo;Kim, Young-Gill
    • Journal of fish pathology
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    • v.7 no.2
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    • pp.105-112
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    • 1994
  • A new bacterial infection occurred among the cultured Korean catfish, Silurus asotus, in Chunbuk prefecture, Korea, 1993. This disease produced about 30% mortality in the fish for 4 months. The diseased fish was swimming listless at the water surface with head up and tail down, sometimes spinnig in circles. The most outstanding clinical sign was ulceration on the skull and at the base of the pectoral fins. The causative organism was isolated from the brain, kidney, spleen and liver of diseased fish, and identified as Edwardsiella icaluri by the biochemical and biophysical characteristics. After intraperitoneal innoculaton of the isolate, the pathogenicity was proved positive for Korean catfish, S. asotus, and channel catfish, Ictalurus punctatus, but negative for carp, Cyprinus carpio.

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