• 한국연소학회:학술대회논문집
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• 한국연소학회 2007년도 제34회 KOSCO SYMPOSIUM 논문집
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• pp.202-206
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• 2007

Plasma assisted combustion is an old subject for the combustion society, but recently, the subject is refocused partly because techniques for non-thermal plasmas are progressed significantly, and partly because there are lots of applications which need to be overcome by a new reaction technology. In the present study, we have developed plasma assisted burner (plasma burner), which can be used as a heating source in a diesel particulate filter system. The burner can bum 20 - 60 cc/min of diesel fuel with 50 lpm of fresh air in an exhaust pipe of 2.0 liter diesel engine. Using 20 cc/min of diesel fuel, an exhaust temperature for 2.0 liter disel engine can be raised up to around $600^{\circ}C$ for the range of engine speeds is idle - 3,000 rpm. The characteristics of the plasma burner are reported, and the possible operating mechanism of it will be discussed based on the effects of an electric field and a plasma on flames.

• 한방안이비인후피부과학회지
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• 제19권2호
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• pp.40-49
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• 2006

Background and Objectives : In oriental Medicine, there is a concept that herb works only in it's own specific site called 'Guikyung(歸經)'. If two herbs have same effect and different Guikyung, two herbs would work at different site respectively. so we want to prove that whether Guikyung has significance or not in experimentally. Methods : In order to investigate the effects of Victicis Fructus & Bupleuri Radix on the Allergic rhinitis, BALB/c mouse was used. Control and experimental group 1, 2 were induced allergic rhinitis. Experimental group 1 was administered Victicis Fructus for 28 days and group 2 was administerd Bupleuri Radix for same period. WBC, neutrophil, lymphocyte, monocyte, IL-4 and $IFN-{\gamma}$ were measured and histological examination was performed. The statistical significance was examined by Independent Samples T test. Results : 1. WBC, neuoophil, lymphocyte, monocyte, IL-4 and $IFN-{\gamma}$ showed no statistically significant differences in three groups. 2. Histological examination had no differences in three groups. Conclusion: Victicis Fructus & Bupleuri Radix have no effect on allergic rhinitis and the reason is estimated that Guikymg plays a important roll to determine the effect of herb from the viewpoint of oriental medicine.

• 한방안이비인후피부과학회지
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• 제19권3호통권31호
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• pp.118-133
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• 2006

Seborrheic dermatitis is characterized by the appearance of red, flacking, greasy lesions in regions rich in sebaceous glands. There are various opinions about the relation between seborrheic dermatitis and dandruff. Considering all available data, we consider seborrheic dermatitis and dandruff to be differing severity manifestations of similar origin. The known etiologies of seborrheic dermatitis are the abnormality of lipid and hormnes, Malassezia species, immune response. We recently focus on the relation between seborrheic dermatitis and HIV positive and AIDS patients, seborrheic dermatitis and neurological disease. The treatments of seborrheic dermatitis include topical treatments, oral treatments. There are non-specific agents, antifungal medication, corticosteroids in the topical treatments. Narrow band UVB and oral medications are known as the prophylaxis of seborrheic dermatitis but we need further study. In traditional korean medicine, the literature studies and case reports have been published. But we don't know what herbal medicine has antifungal effect against Malassezia species. So we should discriminate herbal medicines which have antifungal effect against Malassezia specieses. Then we could treat seborreic dermatitis by traditional korean medicine effectively.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2011년도 추계학술대회 초록집
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• pp.84.2-84.2
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• 2011

In this research, two thin film deposition techniques, Atomic Layer Deposition and Sputtering are carried out for the fabrication of Yittria Stabilized Zirconia electrolyte for thin film Solid Oxide Fuel Cell. Zirconium to Yittrium ratio for both cases is about 1/8. Scanning Electron Microscope(SEM) image shows that the growth rate per hour for Atomic Layer Deposition is faster than for sputtering. X-ray Photo-electron Spectroscopy(XPS) shows that the peaks of both Zirconia and Yittria shift towards higher bending energy for the case of Atomic Layer deposition and thus are more strongly attached to the substrate. Later, Nyquist plot was used to compare the conductivity of Yittria Stabilized Electrolyte for both cases. The conductivity at $300^{\circ}C$ for Atomic Layer Deposited Yittria Stabilized Zirconia is found to be $5{\times}10^{-4}S/cm$ while that for sputtered Yittria Stabilized Zirconia is $2{\times}10^{-5}S/cm$ at the same temperature. The reason for better performance for Atomic Layered YSZ is believed to be the Nano-structured layer fabrication that aids in along the plane conduction as compared to the columnarly structured Sputtered YSZ.

• Nuclear Engineering and Technology
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• 제40권7호
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• pp.561-570
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• 2008

When reactivity insertion such as refueling occurs in CANDU reactors, the power and the water levels are tilted in the upper outer zone of the LZCS (Liquid Zone Control System) and fluctuate unstably for a certain period of time (1-5 days). The instability described above is observed in most CANDU reactors in service around the world, but its root cause is unidentified and no solutions to this problem have been established. Therefore, this study attempted to prove experimentally and analytically that the root cause lies in the hold-up of light water on the top of the TSP (Tube Support Plate) due to the mismatch between net volumetric flow rate of light water and helium crossing the narrowed porous TSP installed within the LZCS compartment. Our method was to perform a hydrodynamic simulation of in/outflow of light water and helium. Two solutions for the aforementioned instability of LZCS are suggested. One is to regulate the compartment for both inflowing helium gas and outflowing light water; the other is to enlarge the flow paths of helium and light water within TSP. The former may be applicable to nuclear reactors in service and the latter to those planned for construction.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2001년도 춘계학술발표논문집 (상)
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• pp.407-410
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• 2001

EDI 시스템은 많은 기업들에게 정보통신기술을 활용하여 업무처리시간 및 비용을 절감하고, 품질을 향상시키기 위한 대안으로 사용되어졌다. 그리고, 인터넷으로 인해 세계 어느 곳에서나 필요한 정보를 볼 수 있게 되었으며, 그 와중에 차세대 EDI 시스템들이 출현하였다. 그 중 다양한 문서구조 표현이 가능한 XML 을 활용한 XML/EDI 가 급속하게 확산되었다. 이러한 시스템들은 네트워크를 통해 정보가 전달되므로 보안에 아주 예민하다. 보안 서비스에도 여러 가지가 있지만 전자서명은 큰 비중을 차지한다. 현재 공개키 암호 알고리즘을 이용한 일반적인 전자 서명을 사용하고 있으나 웹에서 표준화가 되어 가고있는 XML 을 이용한 전자서명 기법이 W3C 에서 제안되어 표준화가 진행되고 있으며 이는 EDI 시스템에서 아주 유용하게 이용 가능한 기술이다. 본 논문에서는 전자 문서 교환에 있어서 중요하다고 할 수 있는 XML 전자서명을 XML/EDI 에 적용하여 시스템을 설계하였다.

• Clinical and Experimental Pediatrics
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• 제55권10호
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• pp.377-382
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• 2012

Purpose: This single-center study aimed to assess the clinical features and surgical approaches and outcomes of complete transposition of the great arteries (TGA). Methods: TGA patients who had undergone surgical correction at the Kyungpook National University Hospital from January 2000 to December 2010, were retrospectively evaluated for patient characteristics, clinical manifestation, preoperative management, intraoperative findings, postoperative progress, and follow-up status. Results: Twenty-eight patients (17 boys and 11 girls, mean age=$10.6{\pm}21.5$ days) were included and were categorized as follows: group I, TGA with intact ventricular septum (n=13); group II, TGA with ventricular septal defect (VSD, n=12); and group III, TGA/VSD with pulmonary stenosis (n=3). Group I underwent the most intensive preoperative management (balloon atrial septostomy and prostaglandin E1 medication). Group II showed the highest incidence of heart failure (P<0.05). Usual and unusual coronary anatomy patterns were observed in 20 (71%) and 8 patients, respectively. Arterial and half-turned truncal switch operations were performed in 25 and 3 patients (Group III), respectively. Postoperative complications included cardiac arrhythmias (8 patients), central nervous system complications (3 patients), acute renal failure (1 patient), infections (3 patients), and cardiac tamponade (1 patient), and no statistically significant difference was observed between the groups. Group II showed the mildest aortic regurgitation on follow-up echocardiograms (P<0.05). One patient underwent reoperation, and 1 died. The overall mortality rate was 4%. Conclusion: Our study showed favorable results in all the groups and no significant difference in postoperative complication, reoperation, and mortality among the groups. However, our results were inadequate to evaluate the risk factors for reoperation and mortality owing to the small number of patients and short follow-up duration.

• 대한불안의학회지
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• 제4권1호
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• pp.49-54
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• 2008

Objective : This article is a part of the Korean Medication Algorithm Project for Panic Disorder, which aims to build consensus regarding the diagnosis, treatment response and achievement of clinical remission for patients with panic disorder in Korea. Methods : The questionnaire used in this article had parts : 1) diagnosis, 2) treatment response, and 3) remission for patients with panic disorder. The questionnaire was completed by each of 54 Korean psychiatrists who had much experience in treating patients with panic disorder. We classified the experts' opinions into 3 categories (first-line, second-line, and third-line) using the ${\chi}^2$-test. Results : Five factors were considered in this research : panic attack, anticipatory anxiety, phobic avoidance, severity of illness, and psychosocial disability. Most reviewers agreed that the presence of a panic attack was the most important factor in the diagnosis of patients with panic disorder. Phobic avoidance was included in the first-line category, whereas the severity of illness and psychosocial disability were included in the second-line category. Most reviewers also agreed that the presence of a panic attack was the most important factor in determining the appropriate treatment response, and it was included in the first-line category along with several other items. To determine remission status, the patients' scores on tests pertaining to the severity of panic attack, anticipatory anxiety, phobic avoidance, severity of illness and psychosocial disability should be less than 3.0-3.3 on a 9-point Likert scale. Conclusion : We suggest useful information for making a diagnosisof panic disorder, determining the appropriate treatment response and identifying remission in panic disorder patients on the basis of the results of a nationwide survey of experts in Korea.

• 대한불안의학회지
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• 제14권2호
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• pp.53-62
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• 2018

Objective : The Korean Association of Anxiety Disorders developed Korean guidelines for treatment of panic disorder (PD) 2018. In this paper, we discussed the consensus among psychiatrists, regarding initial and maintenance treatment strategies for pharmacological treatment of PD in Korea. Methods : Based on current treatment guidelines published by the American Psychiatric Association, the National Institute for Clinical Excellence, and the Canadian Psychiatric Association, we developed questionnaires pertinent to initial and maintenance treatment strategies for pharmacological treatment of PD. Seventy-two experts in PD answered questionnaires. We classified expert opinions into three categories, first, second, and third-line treatment strategies, by analyzing the 95% confidence interval. Results : Antidepressants, benzodiazepine anxiolytics, and cognitive-behavioral therapy (CBT) were recommended as treatments of choice (ToC), and first-line strategies for initial treatment of PD. Escitalopram, paroxetine, sertraline, and venlafaxine were preferred from among many anti-panic drugs. Mean starting dose of anti-panic drugs for initial treatment of PD was relatively lower, than that for other psychiatric illnesses such as major depressive disorder. In the case of maintenance treatment of PD, antidepressants and CBT were selected as ToC and first-line strategies. Patients were typically examined every four weeks during treatment, to review effectiveness and side effects of the drug. Pharmacotherapy was generally continued for one year or more. Conclusion : This study provides information about consensus among Korean experts regarding pharmacological treatment strategies for patients with panic disorder.

• 대한불안의학회지
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• 제15권1호
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• pp.13-19
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• 2019

Objective : The purpose of this study was to investigate consensus relative to treatment strategies for psychosocial treatment in panic disorder, that represents one subject addressed by the Korean guidelines for treatment of panic disorder 2018. Methods : The executive committee developed questionnaires relative to treatment strategies for patients with panic disorder based on guidelines, algorithms, and clinical trials previously published in foreign countries and Korea. Seventy-two (61.0%) of 112 experts on a committee reviewing panic disorder responded to the questionnaires. We classified the consensus of expert opinions into three categories (first-line, second-line, and third-line treatment strategies), and identified treatment of choice using the Chi-square test and 95% confidence intervals. Results : For psychosocial treatment of panic disorder, individual and group cognitive behavior therapy (CBT) were recommended treatments of choice, and mindfulness based cognitive therapy (MBCT) was recommended as first line strategy. There was statistically significant consensus among experts regarding usefulness of each component of CBT and MBCT, for treatment of patients with panic disorder. Conclusion : Results, that reflect recent studies and clinical experiences, may provide the guideline for psychosocial treatment strategies for panic disorder.