• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 B
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• pp.909-911
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• 2003

The almost pole transformers are constructed with tank, cover, clamp etc., that contains the insulation oil, core, coil, terminals, bus and the other accessories. If some fault current will be flown by some trouble or accident, interior pressure of the transformer shall be very quickly rise, and mechanical components or insulation oil from the transformer enclosure shall be propelled or dropped from the tank. For the prevention of the above accident, recently the pole transformers should be done 'the Design Tests for Fault Current Capability' according to ANSI C57.12.20(1997) There are two tests method in this standard, Test Number I with a high current arcing fault, without internal fusible elements, shall be conducted on rack enclosure with its minimum designed air space. Test Number II with an internal fusible element, shall be conducted on each enclosure diameter utilizing the internal fusible elements. KEPCO recently request to be done the 'Design Tests for Fault Current Capability' for pole transformers according to KEPCO's standard ES141-$533{\sim}545$, PS141-$482{\sim}518$ and RS141-$611{\sim}628$ that is same with Test Number I of ANSI C57.12.20.

• The Korean Journal of Pain
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• 제20권2호
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• pp.208-212
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• 2007

Although Churg-Strauss syndrome (CSS) is a rare disease that is generally associated with vasculitis, nerve involvement is also common in cases of CSS. A 48-year old man was diagnosed with a herniated disc at L4-5 and an annular tear at L5-S1 after complaining of pain and numbness in the left lower leg. Peripheral edema was observed during physical examination and the patient was diagnosed with CSS after a biopsy was conducted. In addition, electromyography and nerve conduction velocity revealed the presence of multiplex mononeuropathy, which indicated the pain and numbness was due to peripheral neuropathy caused by CSS. The symptoms were relieved after oral administration of prednisolone. This case indicates that when symptoms of peripheral neuropathy do not match the radiographic evidence other causes, such as CSS, must be considered.

• Maxillofacial Plastic and Reconstructive Surgery
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• 제42권
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• pp.20.1-20.7
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• 2020

Background: Anterior open bite is a challenging malocclusion to correct orthodontic treatment. Anterior open bite associated with over-erupted posterior teeth and long lower facial height should be treated by reduction of posterior dimension for esthetic results. Although the possibility of orthodontic treatment of an anterior open bite has increased with the introduction of skeletal anchorage, there are still cases requiring surgery for various reasons. Case presentation: This case report covers an anterior open bite of a 25-year-old man successfully treated with the posterior maxillary segmental osteotomy (PMSO) and miniplates. After the pre-surgical orthodontic treatment, the PMSO between canines and first premolars was performed under local anesthesia and miniplates were placed on the zygomatic buttress. As a result of 28 months of treatment, an impaction amount of 3.5 mm was obtained in the maxillary posterior teeth, and the facial esthetics improved at rest and smile. Conclusion: The impaction of the posterior dentoalveolar segment using the PMSO can be a good treatment option in patients with anterior open bite showing long lower facial height.

• 대한근전도전기진단의학회지
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• 제20권2호
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• pp.153-158
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• 2018

Posterior interosseus (PI) nerve compression is a rare form of compressive neuropathy. It can cause pain along the radial nerve course and weakness of radial nerve innervating muscles without sensory symptoms. A 65-year-old man visited our institution complaining weakness of finger extension and thumb abduction after 2 times of injections at the right elbow in local clinic. The patient's clinical history and physical examination implied an iatrogenic radial nerve injury caused by the injection. The electrophysiologic study revealed of posterior interosseus neuropathy (PIN) with incomplete conduction block. However, the ultrasound study showed that the PI nerve was compressed by an anechoic cyst. The magnetic resonance imaging also confirmed of a ganglion cyst, not a hematoma. After repeated aspirations and a steroid injection, the electrophysiologic study showed recovery of motor weakness. Despite of the clue which implying an iatrogenic injury, clinician should consider other possibilities such as ganglion cysts and ultrasound guided aspiration and steroid injection could be an effective option for conservative management.

• 한국발생생물학회지:발생과생식
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• 제25권3호
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• pp.185-192
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• 2021

The five oligonucleotide primers (oligo-primers) turned out a total of 335 fragments (FMs) (52.9%) in the blue crab (Portunus trituberculatus) group alpha and 298 FMs (47.1%) in the crab group beta, with the FM scales range varying from 100 bp to 2,000 bp. The highest band-sharing (BS) value (0.907) was found between individual's no. 19 and no. 20 within the blue crab group beta. Parties in the blue crab group beta (0.601±0.017) had higher BS rates than did parties from the crab group alpha (0.563±0.017) (p<0.05). The polar dendrogram got by the five oligo-primers points out two genetic extents: bundle I (BLUECRAB 01, 03, 04, 05, 06, 08, and 10) and bundle II (BLUECRAB 02, 07, 09. 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, and 22). The OPD-01 primer revealed 22 loci shared by all the examples of the as FMs of 1,000 bp. The oligo-primer OPA-05 made unique loci shared to each group (ULSEG), almost 400 bp and 500 bp, individually, in blue crab group beta. The remaining oligo-primers did not reveal any loci shared by the two crab groups (LSTG). The average number of ULSEG was diverse and 1.6-fold higher in the crab group beta than in the crab group alpha.

• Journal of Medicine and Life Science
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• 제20권2호
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• pp.103-106
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• 2023

Post-acute coronavirus disease (COVID-19) syndrome is defined as persistent symptoms or delayed complications after COVID-19. Several cases of cranial nerve invasion related to COVID-19 have been reported. However, to our knowledge, no cases of solitary unilateral hypoglossal nerve paralysis after mild COVID-19 without intubation have been reported to date. Herein, we report the case of a 64-year-old man with unilateral hypoglossal nerve palsy as a complication of COVID-19. He complained of dysarthria and tongue discomfort 2 weeks after COVID-19 onset. Brain and neck computed tomography, magnetic resonance imaging, ultrasonography, and blood tests ruled out other possible causes. The patient's nerve palsy was rapidly diagnosed and improved with early rehabilitation. Understanding of the pathology of COVID-19 is still limited. Physicians should focus on patients' symptoms and their relationship to COVID-19, and investigate complications immediately. This case highlights the importance of early detection and rehabilitation of post-acute COVID-19 syndrome.

• Journal of Chest Surgery
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• 제30권10호
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• pp.1051-1053
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• 1997

악성신경초종은 Schwan cell 또는 신경초 세포(nerve sheath cell)에서 발생하는 아주 드문 종양으로 빈번히 신경섬유종증(Von Rechlinghausen's disease)과 연관되어 있다. 환자는 64세 남자로 우측 가슴에 내원 2개월전부터 있던 무통성 종물을 주소로 내원하였으며 신경섬유종 증과의 동반은 없었다 전산화 단층촬영상 종물의 크기는 6 $\times$ 6 cm였으며, 11번 늑골과 횡경막을 침범하였 고 우신을 앞쪽으로 밀고 있었다. 본 교실에서는 흉벽에 발생한 악성신경초종을 경험하였기에 문헌고찰과 함께 보고한다.

• 한국도서관정보학회지
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• 제32권2호
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• pp.1-20
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• 2001

본 연구는 조직몰입의 선행변수들이 조직몰입과 어떤 상관관계가 있으며, 그 영향력은 어떠한지를 밝히고자 하였다. 이를 위하여 사서들의 개인적 특성, 직무특성, 조직특성 및 작업경험을 독립변수로 하고 가치몰입과 근속몰입을 종속변수로 선정하였다. 데이터는 부산지역 17개 공공도서관 사서 128명을 대상으로 설문조사를 행하였다. 연구결과 1)남자보다는 여자가, 직급이 높을수록 몰입도는 더 높게 나타났다. 2)집권화는 조직몰입과 부(-)의 관계이다. 3)조직몰입에 미치는 영향력은 작업경험이 가장 크고, 그 다음은 조직특성, 직무특성의 순으로 나타났다.

• 환경위생공학
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• 제24권4호
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• pp.39-48
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• 2009

This paper investigated an overview of awareness for fluoride in the young christian association. 30% of men and 70% of women knew well the prevention of caries for fluoride and water fluoridation program and showed of 90% in 20's, 10% in 30's and 0.00% in 40's. 54%-known people for fluoride had each 37% of men and 63% of woman, then 46%-unknown people for fluoride had each 56.52% of man and 43.48% of women. This showed women knew well awareness for fluoride than men. This showed high level above 50% awareness for fluoride as 54% of comprehension for fluoride and 50% of water fluoridation program. Awareness of fluoride of the subjects known for fluoride, prevention of caries, effects of tooth and water fluoridation program appeared above 50% level as 54%, 47%, 45% and 50%, individually. Thus, tooth management in christian showed high level. But, awareness for fluoride of women in third condition 'unknown for mottled tooth' showed each 38%, 34% and 37%. The mottled tooth from an excessive fluoride appeared low level awareness for fluoride of women. It suggested hard scientific contents made woman subjects unknown the effects of fluoride for tooth.

• 대한전자공학회논문지TC
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• 제42권6호
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• pp.33-40
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• 2005

본 논문에서는 광대역 무선 접속 시스템에서 동적 예약 접속 프로토콜의 메시지 지연시간을 해석적으로 분석한다. IEEE 802.16 BWA 와 ETSI HIPERLAN//2 와 같은 광대역 무선 접속 시스템은 무선 MAN 의 시스템 커버리지를 갖으며, 단말의 이동성을 지원하지 않는, 즉 단말이 고정되어 있는 시스템이다. 또한 광대역 무선 접속 시스템에서 사용하는 MAC 프로토콜은 트래픽별 QoS를 효율적으로 지원하기 위하여 경쟁 기반으로 동적 예약을 지원하는 TDMA 방식을 사용한다. 이와 같은 통신망을 분석하기 위하여 경쟁 기반 동적 예약 방식을 지원하는 TDMA 프로토콜의 성능을 해석적으로 분석한다.