• The Korean Journal of Pain
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• 제12권1호
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• pp.157-161
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• 1999

We report a patient with spontaneous intracranial hypotension. In addition to the cardinal feature of a postural headache and a low CSF pressure, the patient also had subdural hematoma demonstrated by brain MRI. Radionuclide cisternography revealed a CSF leakage in the intracranium. CSF leakage from spinal meningeal defects may be the most common cause of this syndrome. The headache is a consequence of the low CSF pressure producing displacement of pain-sensitive structures. Methods of treatment are identical to those for post-dural puncture headaches. We experienced a patient with spontaneous intracranial hypotension developed in the intracranium who was successfully managed with a cervical blood patch.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제29권6호
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• pp.450-454
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• 2003

Mandibular arteriovenous malformations(AVM) are relatively rare and potentially life threatening lesions. Surgical treatment consists of wide resection of the mandible, which is difficult and potentially hazardous due to significant blood loss during surgery. Therefore, some authors advocate that transvenous embolization may be a safer and more effective method in the treatment of mandibular AVM. We report a treatment case of mandibular AVM in a 9-year-old-girl for episodes of spontaneous bleeding for 6 days using by selective transarterial embolization, direct puncture embolization and microcoil embolization.

• Nuclear Engineering and Technology
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• 제30권5호
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• pp.462-469
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• 1998

A package to transport high-level radioactive materials is required to withstand normal transport and hypothetical accident conditions pursuant to the IAEA and domestic regulations. The package should maintain the structural safety not to release radioactive material in any condition. The structural safety of the package has been evaluated by tests using proto-type or scaled-down models, however, the method by analysis is gradually utilized due to recent advancement of computers and computer codes. In this paper, to evaluate the structural safety of a radioisotope package of the KAERI, the three dimensional impact analyses under 9m free drop and 1m puncture were performed with an explicit finite-element code, the LS-DYNA3D code. The maximum stress intensity on each part was calculated and the structural safety of the package was evaluated in accordance with the regulations.

• 한국축산식품학회:학술대회논문집
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• 한국축산식품학회 2004년도 정기총회 및 제33차 춘계 학술대회
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• pp.250-253
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• 2004

본 연구는 Soy Protein Isolate, Egg Albumin 및 Konjac의 보습제(humectants)를 첨가하여 제조한 육포의 이화학적, 미생물학적 및 관능적 특성 등을 조사하기 위하여 실시되었다. 보습제를 첨가한 처리구들은 대조구보다 높은 수분함량 및 제품수율을 나타내었으며, 낮은 puncture force를 나타내어 우수한 조직감을 보였다. 모든 처리구가 저장기간이 경과함에 따라 지질산패도 및 총균수가 증가하였으나 konjac을 첨가한 처리구에서 대조구에 비해 다소 낮은 TBA가를 나타냈었다. 또한 Soy protein isolate와 konjac을 첨가한 처리구가 다른 처리구에 비해 낮은 총균수를 나타내었다. 따라서 보습제 종류별 육포의 품질에 미치는 영향이 다소 차이는 있었지만, 저장성면에서 육포 제조시 보습제로서 konjac 첨가가 보다 유효한 것으로 판단된다.

• The Korean Journal of Pain
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• 제22권2호
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• pp.163-166
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• 2009

The superiority of air versus saline for identifying the epidural space remains unestablished. Epidural anesthesia using a loss of resistance technique (LORT) with air is associated with increasing complications of dural puncture-induced headaches and neurological and hemodynamic changes. Here, we described a case of pneumocephalus with a large amount of air that was accompanied by severe headache and nuchal and chest pain occurring after epidural block using LORT with air for combined spinal-epidural anesthesia.

• Clinical and Experimental Reproductive Medicine
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• 제27권1호
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• pp.111-116
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• 2000

IVF-ET therapy was originally developed as a method for treating patients with absolute mechanical infertility for whom spontaneous conception is almost impossible. Objective: To report that the recent IVF-ET is now applied to couples not only untreatable tubal infertility but also peritubal periovarial adhesions, endometriosis, male-related or unexplained infertility. Material and Method: Case report. Result: We experienced 5 Pregnancies after unsuccessful IVF-ET attempt with additional non IVF-ET therapy or without therapy. Conclusions: The follicular puncture and ovarian enlargement may result in restoration of pituitary-ovarian axis and peritoneal environment in infertility patients.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제33권1호
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• pp.69-75
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• 2007

The treatment of intraosseous ateriovenous malformation in the jaw is difficult because of life threatening frequent bleeding tendency. The surgical resection of AVM may be mortal due to massive blood loss. In the growing pediatric patient, surgery may cause facial deformity and growth disturbance. So currently, the treatment of AVM is only embolization using various material through endovascular access, direct-puncture or embolization in conjunction with surgical resection. We report a case of combined techniques.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 1999년도 춘계학술대회 논문집
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• pp.544-547
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• 1999

To develop the better insulants. the zeolite particle, which is aluminosilicate mineral, was filled In the DGEBA/MDA/SN epoxy resin system. Dynamic DSC curves of cured specimens with various contents of zeolite were observed and the glass transition temperature(T$_{g}$) was obtained. According to this result, we could carry out the experiment concerned with the dielectric breakdown strength around T$_{g}$ and find the limit temperature for the application of the DDEBA/MDA/SN system filled with natural zeolite. T$_{g}$ increased with the content of zeolite. As the temperature increased, the dielectric breakdown strength decreased rapidly, in the region of T$_{g}$. At the high temperature, the deterioration by electrical stress was activated. The diameter of puncture at the high temperature was larger 7han that at the room temperature.erature.

• Corrosion Science and Technology
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• 제6권2호
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• pp.77-81
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• 2007

Fault current can be discharged from power transmission tower due to lightning or inadvertent contact of crane, etc. Pipelines in proximity to either the source of the ground fault or the substation grounding grid may provide convenient conductive path for the fault current to travel. Inappropriate measures to the neighboring pipelines against the fault current may cause severe damages to the pipes such as coating breakdown, arc burn, puncture, loss in wall thickness, or brittle heat-affected zone. Like inductive and conductive AC coupling, steadily induced fault current right after the coating breakdown can lead to corrosion of the pipeline. In this work, some protection guidelines against fault currents used in the field have been validated through the simulation and analytical method.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2000년도 추계학술발표대회 논문집
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• pp.88-91
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• 2000

흑연분말, 카본블랙, 탄소섬유분말을 첨가제로 한 저밀도 2-D 탄소/탄소 복합재의 밀도 및 기 기공도에 피치는 영향과 ILSS, 굽힘강도 및 충격에너지와 같은 기계적 물성과의 상관관계에 대하여 연구하였다. 흑연분말을 약 9 vol.% 첨가한 경우 가장 큰 ILSS값과 굽힘강도 및 충격에너지 흡수 거동을 나타내었는데, 특히 흑연의 함량이 증가함에 따라 puncture mode로의 충격 거동을 나타내 띠 많은 충격에너지를 흡수하였고, 인성이 상당히 증가하였다 카본블랙이 첨가된 경우에는, 약 3 vol.%에서 ILSS 값이 증가하였으나 큰 개선을 보이지 못하였으며, 굽힘강도는 감소하였다. 탄소섬유분말의 첨가량이 증가함에 따라 층간분리에 의해 밀도가 현저히 감소하여 ILSS 및 굽힘강도의 감소를 보였다.