• Childhood Kidney Diseases
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• 제12권1호
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• pp.105-110
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• 2008

신성 고혈압은 소아기 이차성 고혈압의 흔한 원인이며, 그 중 신동맥 협착에 의한 신혈관성 고혈압은 치료 가능한 고혈압의 가장 흔한 원인이다. 신혈관성 고혈압 치료로 최근 경피적 신동맥 혈관 성형술은 비침습적인 방법으로 각광 받고 있다. 저자들은 작은 직경을 가진 신동맥 분지 혈관 협착에 의한 신혈관성 고혈압 소아에서 관상동맥용으로 쓰이는 풍선 카테터를 이용하여 경피적 신동맥혈관 성형술을 성공적으로 시행한 경험을 하였으므로 보고하는 바이다.

• 한국콘텐츠학회논문지
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• 제14권11호
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• pp.955-963
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• 2014

통계청에서 발표한 2010 인구주택총조사에 따르면 '하우스노마드족'1은 2005년에 비해 70%이상 증가하였다. 하우스노마드족의 출현이 주택시장에 미치는 영향과 하우스노마드족의 증가 원인에 대해 선험적인 논의는 많지만 아직까지 연구로 명확하게 밝혀진 바 없다. 본 연구의 목적은 하우스노마드족의 출현 및 증가원인을 가구의 주거소비행태 측면에서 찾고자 한다. 이를 위해 본 연구에서는 2010년 인구주택 총조사 1%자료와 다항로짓모델을 활용하였다. 다항로짓모델은 소비자의 선택에 위계와 순서가 없을 때 활용할 수 있는 유용한 방법이다. 분석결과 하우스노마드족은 주택속성으로 표현된 주거환경특성이 좋은 곳에 거주할 확률이 높은 것으로 나타났다. 또한 상대적으로 더 긴 시간 통근통행을 했고 주거이동성이 높은 것으로 나타났다.

• Membrane and Water Treatment
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• 제7권4호
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• pp.341-353
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• 2016

Papermaking reconstituted tobacco is an important strategy for recycling the waste tobacco residues. To indentify the influences of the inorganic components on harmful components delivery in cigarette smoke, a self-made electrodialysis stack was assembled to desalt the tobacco extract. The influences of the applied current and extract content on the removal rate of the inorganic ions were investigated. Results indicated that the applied current was a dominant impact on the desalination performance. High currents lower than the limiting current density could accelerate the desalting efficiency but cause higher energy consumption. A current of 2 A, or current density of ${\sim}11mA{\cdot}cm^{-2}$, was an optimal choice by considering both the energy consumption and desalting efficiency. A 20% tobacco extract was an appropriate content for the electrodialysis process. More than 90% of inorganic ions could be removed under the optimum condition. The preliminary result indicated that removal of inorganic components was beneficial to decrease the harmful component delivery in cigarette smoke. Naturally, ED is an environmentally friendly and high-effective technology for desalting the tobacco extract.

• 대한후두음성언어의학회지
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• 제16권1호
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• pp.85-87
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• 2005

The pyriform sinus fistula can cause a recurrent abscess in the neck and the current treatment of choice involves complete excision of the sinus tract. But, because of excisional difficult, chemical cautery has been intermittently used as a successful substitute. Recently we experienced a case of pyriform sinus fistula of 9 year-old female who was successfully treated with chemocauterization with trichloroacetic acid(TCA) and ligation of the internal opening of the fistula tract on suspension laryngoscopy. So we report this rate case with review of literatures.

• 대한두경부종양학회지
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• 제17권2호
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• pp.234-237
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• 2001

Pyriform sinus fistula is a rare anomaly arising from 3rd or 4th branchial apparatus and has been recognized as one cause of acute suppurative thyroiditis or acute deep neck infection. Pyriform sinus fistula must be considered when a clinician is encountered recurrent left lower neck abscess and a history of repeated incision and drainage. The confirmation of the diagnosis is made when the fistula tract is identified on a barium swallow study and when the internal orifice of the fistula is found at the apex of pyriform sinus on laryngoscopic examination. A complete excision of the fistula tract has been proposed as a treatment of choice. However, in some cases it is very difficult to resect the tract completely because of severe inflammation and repeated drainage procedure. We present three cases of pyriform sinus fistula which are successfully treated by laryngomicroscopic chemocauterization using synthetic fibrin and $AgNO_3$.

• Journal of Yeungnam Medical Science
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• 제28권2호
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• pp.173-179
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• 2011

Polymyositis is diffuse, inflammatory myopathy with proximal-muscle weakness due to lymphocyte infiltration to the muscle layer. The exact cause of the muscle weakness is unclear but may be related with an immunologic mechanism. Using high-dose steroid is the treatment of choice for polymyositis. It is difficult to distinguish steroid-resistant polymyositis from steroid myopathy, however, in the course of high-dose steroid therapy. These authors encountered a steroid myopathy patient during polymyositis treatment with high-dose steroid. A 57-year-old woman was diagnosed with polymyositis and was treated with high-dose steroid. Her condition was initially improved, but in the course of the treatment, her symptom was aggravated without increasing the muscle enzymes. Her muscle weakness was improved by reducing the steroid dosage.

• Tuberculosis and Respiratory Diseases
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• 제41권5호
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• pp.558-561
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• 1994

저자들은 월경성 객혈 환자에서 흉부 전산화 촬영으로 출혈병소를 발견하였기에 보고 하는 바이다.

• Earthquakes and Structures
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• 제15권4호
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• pp.403-410
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• 2018

The choice of attenuation relationships is one of the most important parts of seismic hazard analysis as using a different attenuation relationship will cause significant differences in the final result, particularly in near distances. This problem is responsible for huge sensibilities of attenuation relationships which are used in seismic hazard analysis. For achieving this goal, attenuation relationships require a good compatibility with the target region. Many researchers have put substantial efforts in their studies of strong ground motion predictions, and each of them had an influence on the progress of attenuation relationships. In this study, two attenuation relationships are presented using seismic data of Mazandaran province in the north of Iran by Genetic Expression Programming (GEP) algorithm. Two site classifications of soil and rock were considered regarding the shear wave velocity of top 30 meters of site. The quantity of primary data was 93 records; 63 of them were recorded on rock and 30 of them recorded on soil. Due to the shortage of records, a regression technique had been used for increasing them. Through using this technique, 693 data had been created; 178 data for soil and 515 data for rock conditions. The Results of this study show the observed PGA values in the region have high correlation coefficients with the predicted values and can be used in seismic hazard analysis studies in the region.

• Clinical Endoscopy
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• 제55권2호
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• pp.297-301
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• 2022

Common bile duct (CBD) stones are prevalent in 11% to 21% of patients with gallstones and can cause various clinical manifestations, from biliary colic to biliary sepsis. The treatment of choice is endoscopic retrograde cholangiopancreatography, but approximately 5% to 10% of CBD stones are difficult to remove using these conventional endoscopic methods. Although percutaneous transhepatic cholangioscopy and lithotripsy can be used as an alternative, it can be technically demanding and risky if the intrahepatic duct is not dilated. We report a case of a large CBD stone that was successfully removed using percutaneous transcholecystic cholangioscopy.

• Smart Structures and Systems
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• 제16권4호
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• pp.725-742
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• 2015

Tuned mass dampers (TMD) are devices employed in vibration control since the beginning of the twentieth century. However, their implementation for controlling the seismic response in civil structures is more recent. While the efficiency of TMD on structures under far-field earthquakes has been demonstrated, the convenience of its employment against near-fault earthquakes is still under discussion. In this context, the study of this type of device is raised, not as an alternative to the seismic isolation, which is clearly a better choice for new buildings, but rather as an improvement in the structural safety of existing buildings. Seismic records with an impulsive character have been registered in the vicinity of faults that cause seismic events. In this paper, the ability of TMD to control the response of structures that experience inelastic deformations and eventually reach collapse subject to the action of such earthquakes is studied. The results of a series of nonlinear dynamic analyses are presented. These analyses are performed on a numerical model of a structure under the action of near-fault earthquakes. The structure analyzed in this study is a steel frame which behaves as a single degree of freedom (SDOF) system. TMD with different mass values are added on the numerical model of the structure, and the TMD performance is evaluated by comparing the response of the structure with and without the control device.