Zeolite X 촉매를 이용한 WO₃의 CO 환원-탄화반응

이동활,이종대,전진혁,박노국,류시옥,이태진 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.2

This study was performed to manufacture tungsten carbide from CO reduction- carburization of WO₃using zeolite-NaX catalyst. Zeolite-NaX catalyst could improve the reduction property of WO₃. Moreover, zeoite-HX and KX catalysts also improved the reduction property of WO₃. This improvement of reduction property leaded to the decrease of reaction temperature. The size of WC particle was 50∼60 nm at 650 ℃ for 10h. From these results, it is concluded that the various zeolite X catalysts could be used for the reduction-carburization of W0₃ as the catalysts.

위암과 식도암이 병발된 다발성 원발성 악성종양 1예

박사영,이나영,이효진,이선영,최진혁,이순남,심강섭,성순희,한운섭 梨花女子大學校 醫科大學 醫科學硏究所 1996 EMJ (Ewha medical journal) Vol.19 No.3

Multiple primary cancer means that more that two cancers occur independently in an individual. Recently, the incidence of multiple primary cancer has increased with lengthened survival, of cancer patients, development of new diagnostic technique and increased clinical evaluation. We report a patient who had adenocarcinoma of stomach combined with squamous cell carcinoma of esophagus simultaneously.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

결합조직형성 모종 1예

이병진,노진혁,조옥자,박시룡 대한피부과학회 2003 大韓皮膚科學會誌 Vol.41 No.1

Desmoplastic trichilemmoma is a rare variant of trichilemmoma characterized by typical features of trichilemmoma with abundant desmoplastic stroma. We report herein a 54-year-old man presented with 2-year history of a solitary bean sized verrucous nodule on the occipital scalp. Histologically, the tumor showed a well-defined lobular growth extending from the epidermis into the dermis with abundant central desmoplastic stroma. Epithelial lobules at the margins of the neoplasm showed the typical features of trichilemmoma composed of glycogen-rich clear cells and peripheral palisading columnar cells. In contrast, at the center the cells assume a more random pattern of cords and strands traversed by the hyaline stroma, mimicking invasive carcinoma. It was diagnosed desmoplastic trichilemmoma by the distinctive histologic appearance and totally excised. (Korean J Dermatol 2003;41(1) : 120∼122)

초기의 수신증 환자의 요로폐쇄 진단에 있어 Tc-99m MAG3 신장 스캔시 실질통과지연 소견의 유용성

이원우,문대혁,김재승,류진숙,이희경 대한핵의학회 2002 핵의학 분자영상 Vol.36 No.5

목적: 신우 확장이 심하지 않은 상부 요로 폐쇄 환자는 신우의 순응도가 낮아 이뇨신장스캔에서 위음성으로 나올 수 있다. 실질통과지연이 이뇨신장스캔 위음성을 감별해 내는 유용한 소견이 될 가능성이 있다. 저자들은 일측성 요로폐쇄가 의심되는 성인 환자들을 대상으로 Tc-99m MAG3 신장스캔을 실시하였을 때 이뇨신장스캔과 실질통과지연의 폐쇄진단 능력을 비교해 보았다. 대상 및 방법: 일측성 요로폐쇄가 의심되어 Tc-99m MAG3 이뇨신장스캔을 실시한 54명(남:여=30:24, 나이 40.7±15.5세)이 대상 환자군이었다. 이뇨신장스캔의 폐쇄 양성에 대한 진단기준은 T_(1/2)>15분 이었고, 반대측 정상신장에 비해 신우에 방사능이 늦게 나타나고 실질에 방사능 저류가 현저할 때 실질통과지연이 있다고 하였다. 수신증의 정도는 1∼2분 배설기 영상에서 수신증이 있는 신장대 반대편 신장의 면적 비로 구하였다. 폐쇄의 최종 진단은 중재시술 후에 수신증이 호전될 때 혹은 중재시술을 하지 않은 경우는 수신증이 악화될 때였다. 폐쇄 없음으로 정의한 경우는 6개월이상 추적하였을 때 수신증이 변화 없을 때였다. 결과: 26예는 폐쇄가 있었고 28예는 폐쇄가 없었다. 이뇨신장스캔과 실질통과지연의 민감도는 각각 69% (18/26) 와 50% (13/26)이었고 이뇨신장스캔으로 위음성을 보였던 2예의 폐쇄를 실질통과지연으로 더 찾을 수 있었으며 이들은 신장 면적 비가 1.1미만이었다. 이뇨신장스캔 혹은 실질통과지연으로 폐쇄를 진단할 수 있었던 20예 중 실질통과지연이 있었던 13예는 실질통과지연이 없었던 7예보다 신장 면적 비가 유의하게 작았으나(0.97±0.20 vs 1.30±0.41, p<0.05) 상대신기능은 차이가 없었다. 특이도는 실질통과지연이 100% (28/28)이고 이뇨신장스캔은 89% (25/28)이었다. 결론: Tc-99m MAG3 스캔에서 실질통과지연은 신우 확장 정도가 심하지 않은 요로폐쇄에서 이뇨신장스캔이 위음성인 경우의 요로폐쇄 진단에 도움이 될 수 있다. Purpose: Diuretic renography (DR) can be false negative in patients with upper urinary tract obstruction due to low compliance of the renal pelvis. Delayed parenchymal transit (DPT) may be a valuable sign in case of false negative DR. We compared the diagnostic values of DR and DPT during Tc-99m MAG3 diuretic scan in adults with suspected unilateral obstructive uropathy. Materials and Methods: Fifty-four patients (male:female=30:24, age: 40.7 15.5 yrs) who underwent Tc-99m MAG3 diuretic scan due to suspicious unilateral obstructive uropathy were analyzed. DR with a T_(1/2) of > 15 min was considered as positive for obstruction. DPT was considered to be present when there was delayed appearance of radioactivity in the renal pelvis and prolonged retention of radioactivity in the renal parenchyma. The renal area ratios was defined as the ratic of pixel number of hydronephrotic kidney over that of normal contralateral at 1∼2 min images. Definition of obstruction was improved hydronephrosis after intervention, or aggravated hydronephrosis without intervention. Non-obstruction was defined as unchanged hydronephrosis over 6 months. Results: Twenty-six renal units had obstruction and 28 no obstruction. The sensitivities of DR and DPT were 69% (18/26) and 50% (13/26) respectively. Two renal units with DPT but negative DR showed the renal area ratio of <1.1. Among the 20 obstructive renal units with DPT or positive DR, 13 with DPT had lower renal area ratio than 7 renal units without DPT (0.97±0.20 vs 1.30=0.41, p<0.05). Differential renal function was not significantly different between these groups. DPT correctly diagnosed all renal units with non-obstruction (specificity 100%), while the specificity of DR was 89% (25/28). Conclusion: DPT during Tc-99m MAG3 diuretic scan may be a valuable sign in diagnosing urinary obstruction especially in patients with false negative DR and early HN. (Korean J Nucl Med 2002;36:306-13)

일 대학병원에 입원한 주요우울장애의 증상 특성

이진,김상훈,김학렬,박상학,황걸,장혁진 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.2

Objectives: The purpose of this study was to investigate the frequency and kinds of symptoms and the profile of depressive symptoms and somatic symptoms of admitted patients with major depressive disorder in a university hospital. Methods: The study was cross-sectional study in Chosun university hospital. A total of 299 patients who met the diagnostic criteria of major depressive disorder according to DSM-IV were participated in this study. Forty four item questionnaires were developed to check symptoms and the questionnaires checked from patient's medical record. Results: Common depressive symptoms were the following order: depressive mood (55.2%), initial insomnia (52.8%), anxious/tense (47.8%), tired/no energy (35.1%), suicidal ideation (28.8%). Common somatic symptoms were the following order: decreased appetite (33.1%), headache (22.1%). gastric discomfort (16.7%), palpitation (15.4%), chest discomfort (11.4%). Comparing depressive symptoms and somatic symptoms in terms of gender, anxious/tense, emotional/cry a lot, decreased appetite, gastric discomfort, palpitation, were more frequent in female patients (p<0.05), On the other hand, interpersonal sensitivity, pessimism were more frequent in male patients (p<0.05). Elderly depressed patients showed hypochondriasis symptom more frequently than younger patients (p<0.05). Conclusion: These results suggested that the depressive symptoms showed dissimilar in character according to the gender and age. Therefore proper diagnostic and therapeutic approaches will be needed for each patient's symptom characteristics.

우리나라 觀光圈의 類型區分에 關한 考察 : 首都圈응답자의 觀光地 滯在日數를 中心으로

이혁진 서울保健大學 1996 論文集 Vol.16 No.1

The purpose of this study is to classify types of Tourism Areas' in terms of the time-distance method. For this, the types of tourism area are set up by the 'Stay Period'. Literature review and questionnaire method have been used for the purpose. Respondents are centered on Seoul metropolitan area, capital circle. The major findings of this study are summarized as follows; First, As for the recognition about tourism area, the male respondents showed higher degree of recognition than the female ones. Younger respondents with higher educational background also displayed higher recognition. Second, As for the preference on tourism area, Ch'ungbu area is the most preferred one, and it is followed by Tongnam, Ch'ungch'oˇng, Seonam, and Cheju area. The stay period in each area is that Ch'ungbu is 1 day, Ch'ungch'oˇng is 1 night 2 days, Seonam is 2 nights 3 days and Tongnam and Cheju are 3 nights 4 days. Third, as far as 'Administrative Unit' concerns, the favorite district is Kyoˇnggi-do. Next is Kangwon, Kyoˇngbuk, Kyoˇngnam, Ch'ungnam, Choˇnnam, Cheju, Ch'ungbuk and Choˇnbuk. In regard to distribution by the stay period in them, 1 day's trip is preferred in Kyoˇnggi-do, 1 night 2 days' trip in Kangwon-do and Ch'ungchoˇngnambuk-do, 2 nights 3 days' trip in Kangwon-do and Kyoˇngsangnambuk-do and 3 nights 4 days' trip in Kyoˇngsangnambuk-do and Cheju-do. Fourth, tourism area types can be divided into 4 patterns on the basis of the stay period;'1 Day', '1 night', '2 nights' and '3 nights'. 1. '1 day' is composed of Seoul-neighborhood zone, Inch'oˇn-Coastal zone, and Ch'unchoˇn zone in Ch'ungbu area. 2. '1 night' is composed of Ch'ungch ng area and a part of Ch'ungbu area. 3. '2 nights' is composed of Tongnam and Seonam area. 4. '3 nights' is composed of South-coastal zone and Cheju area including many islands. Based on the results, the following suggestions can be made for future study. One is the necessity of classifying the tourism areas around other Kwangyeok cities like Pusan, Taegu, Kwangju and Taejon. The other is that it is needed to classify these types by traffic modes and socio-demographic characteristics.

國有 自然休養林의 空間的 特性과 利用者 餘暇패턴 分析 : 京畿道 有明山·仲美山을 事例로

이혁진 경희대학교 문리과대학 지리학과 1998 地理學叢 Vol. No.

The purpose of this study is to analyze the characteristics of Mt. Yoomyung and Mt. Joongmi nationalized recreational forest by examining the geographic environment and recreational facilities and users' leisure patterns. Literature review, field survey and questionnaire method have been used. The questionnaires numbering 604 were collected from 2 areas. The major findings of this paper are summarized as follows. First, as a result of the field survey, Mt. Yoomyung and Mt. Joongmi belong to 'nationalized forest' according to the right of ownership. From the analysis of the geographic locations, there are relationships with mutual competition and cooperation between 2 areas. In regard to the area and recreational facilities, Mt. Yoomyung showed higher degree of quality than Mt. Joongmi. Second, as for users' residential distributions, study areas belong to 'the Seoul metropolitan circle type'. In the case of users' travel behaviors, the type accompanied with family or friends was the most plentiful. As for the stay period, '1 night 2 day' was the most important. Driving a car was ranked first in traffic modes. Most users spent about 2 hours from their residences to the forest. As for preferred seasons, the favorite one was summer. Next was autumn, spring and winter. Third, in the case of motivation of leisure activities, users tend to prefer 'forest recreation' and 'a rest/recreation'. As for the degree of users' participation, 'forest recreation', 'the sightseeing of physical landscape' and 'relaxation/a simple rest' were higher than 'the gathering and purchase of forest goods' and 'the use of facilities'. They were positively concerned with the mountain location and physical environment. Fourth, from the analysis of users' satisfaction concerning natural resources, users were satisfied with 'physical landscape'. As for the level of recreational facilities, the value of lodging facilities is much higher than that of any other facilities. But as the level of satisfaction, Mt. Yoomyung were higher than that of Mt. Joongmi. Based on the findings of this paper, the following suggestions can be made. First, as a result of the study that focused on 2 areas, there is a need to increase multipurpose spaces for use during 4 seasons in nationalized recreational forests of Korea. Second, the development and managemental plan of the nationalized recreational forest should be linked with not only the income source of nationalized economy but also the place of forest recreation. Thus what is needed is to increase functions of forest recreation and economic income by establishing various recreational facilities. Third, in the case of the nationalized recreational forest, advertising strategies by using various media are needed in order to improve the name value of this forest. Management of recreational facilities is needed in order to harmonize physical environment, conservation and recreational use.

Sol-gel법을 이용한 미세공 실리카 세라믹의 기공구조 변화에 관한 연구

이진휘,연만형,정은정,박노혁 서울産業大學校 1996 논문집 Vol.43 No.1

솔-젤법에 의하여 제조된 미세공 실리카 세라믹에 대하여 N₂-adsorption isotherm 및 TEM에 의하여 기공구조 변화를 조사하였다. Group 1, 2 및 3의 경우 물의 양이 각각 11, 5.5 및 3.8mole까지는 급격히 surface area의 증가를 보이다가 그 이후에는 완만한 상승을 보이는데, 이것은 앞의 실험에서 보인[4.5]gelation time 및 FT-IR의 실험결과와 일치하는 것이다. 서로 다른 물의 양에 대하여 BET surface area와 Cumulative surface area의 차이가 Group 1서 Group 3으로 옮아감에 따라 커지는 것은 용매의 양은 감소하는 반면 TEOS의 양 증가로 인하여 물과 TEOS의 반응이 원활하지 못한 결과로 덜 발달된 polymer에 기인한 작은 particle에 의하여 형성된 작은 기공들에 기인한 것으로 사료된다. 이와같은 기공구조는 TEM의 결과에 의하여 확인할 수 있다. Group A에서 E쪽으로 갈수록 물의 양의 증가에 기인하여 surface area는 증가하며, Group a에서 d쪽으로 갈수록 물의 양의 감소에 기인하여 surface area는 감소한다. N₂-adsorption isotherm and TEM were used to investigate the micro-porous silica ceramic prepared by sol-gel process to find the structural changes of pores. In the case of Group 1, 2 and 3, the drift of the surface area increased steeply till the amount of water 11, 5.5 and 3.8 moles individually and after that showed increased smoothly. It is the same results as the gelation time and the FT-IR[4.5]. It is the reason that the differences of BET and Cumulative surface area become larger proportionally as moving from Group 3 that the reaction of water and TEOS is less active, caused by using decreased quantity of water but increased TEOS, and therefore the smaller pores by the smaller particles were formed. It was identified by TEM. The surface area is increased by the increased water as moving from Group A to Group E, and decreased by the decreased water as moving from a to e.

뇌졸중 후 치매환자에서 도네피질(아리셉트^(?))이 인지기능 및 일상생활 수행능력, 삶의 질에 미치는 효과

이상열,장혁,송재은,조성옥,류정미,이미경,조진호,신용일 圓光大學校 醫科學硏究所 2008 圓光醫科學 Vol.23 No.1

Background: This study evaluated the efficacy of administering Donepezil(Aricept^(?)) for improving cognitive function, activities of daily living, and quality of life in patients with post-stroke dementia. Methods: Patients(n=99; mean age, 69.89 years; 48.5% men) with post-stroke dementia, according to criteria of the DSM-IV and MRI, were treated with donepezil 5mg/day or 10mg/day during 24 weeks. They were examined using Mini-mental Status Examination(MMSE), Chinical Dementia Rating(CDR), Barthel Activities of daily living(B-ADL), Instrumental Activities of daily living(I-ADL), Short Form 36 Health Survey-Korean(SF-36-K), and Geriatric Depression Scale(GDS) at before treatment and 24 weeks after treatment. Results: The 97 patients completed the trial. At 24 weeks, they showed significant improvement in MMSE(p<0.001), CDR(p<0.001), B-ADL(p=0.002), I-ADL(p<0.001), and SF-36-K(p=0.003) except GDS(p=0.288). Donepezil was well tolerated. There was no withdrawal due to adverse events. Conclusion: This results demonstrate that donepezil was beneficial in improving the cognitive function, activities of daily living, and quality of life in patients with post-stroke dementia and was well toleraetd.