• Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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• 2001.11a
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• pp.201-202
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• 2001

옵셋인쇄에서 종이로부터 나오는 이물질에 의한 인새 트러블은 자주발생되는 현상이다. 인쇄물 상에서 나타나는 이러한 현상은 주로 회색 반점이나 히키(Hickey, Catyes) 혹은 Blanket poling으로 나타난다. 원인에 따라 Dust, Linting, Picking, Delamination, Piling으로 나눌 수 있다. 인쇄에서 이물질의 발생에 영향을 주는 요소가 많고 일반적인 경우에는 복합적인 원인에 의한 경우가 많아 인쇄물만으로는 이물질의 종류나 발생 원인을 파악하기 어렵다. 본 연구는 자체 제작한 Test chart를 이용하여 실인쇄 실험을 함으로써 이물질의 종류와 발생 원인을 분석한 사레를 보고하고자 한다. Test chart의 구성은 동일 면적의 화선면적율 20, 50, 75, 100%를 갖도록 설계하였고, 인쇄중 잉크(1st oscillating roll). 습수통(Dampening founation solution), Blanket 표면온도를 측정하였으며, 일정 부수 인쇄 후 인쇄판, Blanket, 인쇄물을 회수하여 분석하였다.

• Proceedings of the KIEE Conference
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• 2000.11c
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• pp.516-518
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• 2000

정상 상태의 gas-insulated switchgear (CIS) 내부에서 발생한 부분방전 신호를 검출 할 수 있는 UHF 부분방전 검출 센서를 실험용 362 kV GIS에 적용하였다. GIS 내부에 알루미늄 이물질을 투입한 다음 120 - 180 kVrms 전압을 단계적으로 인가하고 장시간 인가전압 위상에 대한 UHF 부분방전 신호를 측정하였다. 인가전압을 높일수록 검출된 방전신호의 간격이 늘어났으며, 이물질로 사용한 알루미늄선의 길이가 길어질수록 이물질의 상승고도는 증가하였다. GIS 내부에서 이물질의 운동에 대한 간단한 계산에서도 비슷한 경향을 보임을 확인하였다.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.6.1-6
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• 1979

Though complications of foreign bodies in the esophagus are rare, they are sometimes fatal due to injuries to the esophageal wall by sharp pieces of bone, metals, long-term lodgement of foreign bodies in the esophagus or a little inadvertence during diagnostic or therapeutic esophagoscopy on patients with esophageal diseases. Therefore, failure to early diagnose and adequately treat the complications will lead to high morbidity and mortality. The authors have experienced 21 cases of complications of foreign bodies in the esophagus caused by foreign bodies themselves or inadvertence during esophagoscopy. So we report them with literature review.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.9.2-9
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• 1979

Frequently, we have been noted foreign bodies in air way, which can produce different signs and symptoms needed for differential diagnosis with other diseases. Occasionally, it can be followed by some pulmonary complications and removal difficulty. Therefore it can be serious and fatal in few cases, especially in children. Three cases were evaluated with clinical and roentgenographic features of air way obstruction due to foreign bodies and discussed with previous many literatures.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1979.05a
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• pp.10.1-10
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• 1979

Foreign bodies in the air and food passages are perhaps considered as one of the most frequently observed accidental case in the fields of otolaryngology, and interestingly enough, its mechanism of occurence is well reflected upon our environment and way of daily living. Recently, we experienced a case of foreign body in the right main bronchus of 3 year-old boy, which was successfully removed bronchoscopically.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1978.06a
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• pp.3.2-3
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• 1978

The esophageal perforation with foreign body is very rare. It is usually caused by sharp metallic foreign body or bone piece and rarely caused by long standing of foreign body. The authors observed 5 cases of esophageal perforation with foreign body among 48 cases of esophageal foreign body during the period from Jan. 1976 to Dec. 1977. There were two cases of esophageal foreign body with curved wire. a case with bone piece. a case with safty pin and a case with fish hook.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1983.05a
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• pp.13.2-13
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• 1983

Foreign bodies in air and food passages are not uncommon conditions in otolaryngological field and we can find out numerous causes of esophageal foreign bodies in literatures. Radiological exammination is essential and important method in diagnosis of foreign bodies in esophagus. The authors experienced a case of foreign body double coins, in esophagus in a 4-year - old girl and the authors emphasizing that in cases of esophageal foreign bodies radiological examination should always be included lateral view as well as anteroposterior view of neck especially when coins in the esophagus is suspected.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1991.06a
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• pp.35-35
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• 1991

식도이물은 대부분 상부식도에 위치하며 식도경술로 제거가 용이하지만 식도 점막내 매복된 이물이나, 식도경술의 합병증으로 인한 천공에 의하여 위급한 종격동염을 유발하는 경우가 있다. 이러한 종격동염은 하부식도에 위치한 이물 특히, 날카롭거나 표면이 불규칙하며 큰 경우에 유발하기 쉬우므로 초기에 개흉술을 통한 제거 또는 배농술 등의 적극적인 치료가 필요하다. 저자들은 1980년부터 1990년까지 10년간 본원에서 식도이물 제거술후 종격동염이 발생되어 개흉술 또는 배농술을 시행 받은 4례(틀니 1례, 칫솔 1례, 조개 껍질 1례, 생선 가시 1례)를 문헌고찰과 함께 보고하는 바이다.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1981.05a
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• pp.11.3-11
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• 1981

There are many reported cases about foreign bodies in air and food passages in children, but not common about the nasopharynx. It is well known that the most of the foreign bodies in food passages are lodged at the first narrowing of the esophagus and this can be a cause of overlooking the foreign bodies in the nasopharynx. The authors experienced recently a case of foreign body, a coin, lodged in the nasopharynx in a 6-month-old male baby and emphasized the necessity of diagnostic radiological examination must be included the nasopharynx when suspected foreign bodies, especially in children so that it could not be overlooked.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1978.06a
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• pp.4.2-4
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• 1978

Foreign bodies in esophagus and tracheobronchus should be sometimes treated with emergency and are used to be considered as an importment disease in otolaryngologic field. Interestingly, variety of the incidence and object of foreign bodies have been showed as being changed the mode af life pattern and civilization. Our department had already reported the statistical survey at first in 1954, successively in 1992, 1963 and 1968, respectively according to the age, sex, variety af foreign bodies, location and duration of the lodgement. Now, we have experienced the new 186 cases during the consecutive 5 year period from January 1973 to December 1977 and reported as a 5th report comparing with previous reports.