Aspergillus fumigatus에 의한 요추 척추염 1예

허상택,정숙인,김연숙,오원석,조황래,김성민,백경란,송재훈,이남용 대한감염학회 2001 감염 Vol.33 No.2

Aspergillus fumigatus is the most common pathogen causing invasive aspergillosis. Although invasive aspergillosis mainly involves lung, brain, and sinus, Aspergillus fumigatus osteomyelitis of the spine has been reported very rarely. We experienced a case of vertebral Aspergillus osteomyelitis and report it with a review. A 70-year-old women was admitted due to progressive lower back pain, which had begun 1 month before admission. Although she had diabetes and hypertension, no other underlying disease or immune dysfunction was fecund. MRI of spine showed severely destroyeded lumbar spines. Debridement and bone graft was done for correction of unstable spine, and Aspergillus fumigatus wsa grown from surgical specimen. Amphotericin B was given up to total 2 g, and was switched to oral itraconazole maintenance therapy. She is well until now, 120 days after operation. On the other hand, anthracofibrosis due to Mycobac-Terium tuberculosis was found through bronchoscopic study, which was done because of atelectasis in left lower lobe of lung. Therefore she was treated with anti-tuberculous agents also. (Korean J Infect Dis 33: 153∼156, 2001)

제14회 부산 아시아 경기대회 여자 태권도 경기 공격기술 및 득점 분석

허정석,황영성,박재성,김도호,한성유,이수판 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.2

The purpose of this study was to analyze attack skills and scores in 8 weight classes of female Taekwondo athletes who participated in the semi-final and final matches(48 athletes) in the 14th Asian Games(2002, Busan). The 14th Asian Games was chosen for this study because it is in these games that the rules were revised to a variable scoring system. The results obtained from this analysis were as follows; 1. Korean female athletes: No significant difference was found in attack frequency in the light weight class and the heavy weight class. The attack frequency in the light weight class was shown to be in the following order: momtong-dolryeochagi(217 times), naraechagi(48 times) and dichagi(15 times). The attack frequency in the heavy weight classwas shown to be in the following order: momtong-dolryeochagi(263 times) and tchikeachagi(15 times). 2. Foreign female athletes: No significant difference was found in attack frequency in the light weight class and the heavy weight class. The attack frequency in the light weight class was shown to be in the following order: momtong-dolryeochagi(555 times), naraechagi(32 times) and dichagi(12 times). The attack frequency in the heavy weight class was shown to be in the following order: momtong-dolryeochagi(555 times), tchikeachagi{35 times) and naraechagi(35 times). 3. There is a significant difference in attack frequency in the light weight group of Korean female athletes and foreign female athletes, Between groups, in case of quick body attack, such as momtong-dolryeochagi and naraechagi, the frequency of korean athletes was shown to be higher and scores obtained were higher. In case of high score face attack, such as eolgul-dolryeochagi and tchikki, the frequency of foreign atheletes was shown to be higher 4. There is a significant difference in attack frequency in the heavy weight group of Korean female athletes and foreign female athletes, Between groups, in case of quick body attack, such as momtong-dolryeochagi and naraechagi, the frequency of Korean athletes was shown to be higher and the foreign female athletes' eolgul-dolryeochagi and dwitchagi score rates were shown to be the higher.

과증식 동공막잔류 눈성인의 치료 : 3예

허준,양성원,양필중,고재웅 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2

Purpose: Persistent pupillary membrane(PPM) can be classified as four types by means of its morphology. Type 2, which is attached to the lens, is very rare and can cause visual disability. We report 3 cases of type 2 PPM that shows a good visual acuity and cosmetic improvement after removal. Methods: We chose 3 female who showed a poor visual outcome and abnormal shaped pupil since a child. All of 3 case could be examined a hyperplastic persistent pupillary membrane by slit lamp biomicroscopy. Treatment was a surgical removal of PPM, and a surgical removal of PPM and cataract operation in one case of PPM with cataract. Results: All of 3 patient showed a good visual acuity and cosmetic improvement, Conclusion: Surgical management should be also considered to good visual acuity and cosmetic improvement to PPM observed in adult eye.

체인형 합성고무탄성재의 탄성력 감쇄

허창혁,성재현,권오원,경희문 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.5

본 연구는 체인형 합성고무탄성재의 시간에 따른 탄성력 감쇄의 양상을 평가하여, 이들 재료의 임상적용시 적절한 교정력의 적용을 위해 참고가 될 만한 기준을 구해보려는 목적으로 시행되었다. 공간폐쇄시 사용되는 체인형 합성고무탄성재의 탄성감쇄정도를 알아보기 위하여, 임상에 널리 사용되는 두가지의 체인형 합성고무탄성재를 구강내 상태와 유사한 조건하에서 4주간 신장시켜 관찰한 결과 다음과 같이 요약할 수 있었다. 1. 시간에 따른 탄성력 감쇄양상은 전형적인 log함수의 형태를 보이며, 4주후 잔존탄성력은 원래의 41.2~64.6 %이며 제품에 따라 차이가 있었다. 2. 신장후 초기 10분동안 탄성력의 급격한 감소를 보여서, 초기힘의 20~25 %를 상실하였으며, 이후 감소량이 줄어들어 1주이후부터 4주까지의 평균감소량은 1.5 %정도로 거의 일정한 힘의 크기를 보여주었다. 3. 동일한 재료를 사용하더라도, 탄성재의 신장량이 증가할수록 잔존탄성력이 감소하여 탄성감쇄율이 증가하였다. The purpose of this study was to evaluate the force degradation rate of synthetic elastomeric chains during space closing phase of orthodontic treatment. Two kinds of synthetic elastomeric chains(RMO, 3M) were selected which were commonly used in clinics. All of the samples were extended and tested for 4 weeks under the simulated intraoral condition. The results can be summarized as follows : 1. Time related residual force showed typical logarithm function. Residual force after 4 weeks was 41.2~64.6 % of original force, and difference between two kinds of elastomeric chain existed. 2. Elastic force decreased greatly during first 10 minutes, so 20-25 % of original force disappeared After that, this decreasing tendency was diminished significantly, average rate of elastic force after 1 week to 4 weeks were 1.5 % demonstrating rather constant force. 3. Even though the same brand of elastomeric chiain was used, as extension rate of elastomeric chain increased, force degradation rate increased by decreasing of residual force.

경주시 보호수 생육실태 연구

허상현,하재호 한국환경과학회 2004 한국환경과학회지 Vol.13 No.10

The purpose of this study is to survey and analyze the growth, management and surrounding environment of the big and old trees in Kyoungju-si or the cultural assets alive in our history, and thereby, provide for some data useful to their reasonable protection and use of their surrounding areas. As a result of surveying the growth conditions of the big and old trees, it was found that the height of new grass was 10.5cm on average, the activity scale of the wood was 7.2kΩ, the soil hardness was 16.7kg/㎠, the soil acidity was pH 4.8, and the soil moisture was 13.3%. Such findings suggest that the soil has been acidified by people's frequent passages, but that the other growth conditions are more or less normal. Hence, it is desirable to secure a sufficient space around the trees or reduce people's stamping pressure with some mechanisms. On the other hand, the visible conditions of the trees were found more or less normal, but many trees remained cut or barked (with some cavities), requiring an optimal treatment or measure. Lastly, as the population has decreased in the suburban traditional villages, the surrounding environment seems to be less vulnerable to people's frequent visits. Nevertheless, in consideration of the fact that there are only a few public space for the villagers, it is deemed necessary to rearrange or maintain some parts of the surrounding environment as public space for villagers or hikers.

제14회 부산 아시아 경기대회 남자 태권도 경기 공격기술 및 득점 분석

허정석,황영성,박재성,김도호,한성유,이수판 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

The purpose of this study was to analyze attack skills and scores in 8 weight classes of male Taekwondo athletes who participated in the semi-final and final matches(48 athletes) in the 14the Asian Games(2002, Busan). The 14th Asian Games was chosen for this study because it is in these games that the rules were revised to a variable scoring system. The results obtained from this analysis were as follows; 1. There is a sinificant difference of attack skill frequency per Korean(Foreign) male athlete was 50.00(51.38) times and scores obtained were an average of 5.06(4.25) points per athlete. 2. There is a significant difference in attack frequency between the light weight group and heavy weight group of Korean and Foreign male athletes. Korean male athletes: Between groups, in case of momtong-dolryeochagi, naraechagi and tchikeachagi, the frequency of the light weight group was shown to be higher. The frequency of momtong-dolryeochagi was shown to be higher in the heavy weight group. 3. There is a significant difference in attack frequency between Korean male athletes and Foreign male athletes in the light weight group and heavy weight group. The light weight group: Between groups, in case of momtong-dolryeochagi and eolgul-dolryeochagi, the frequency of Korean male athletes was shown to be higher and in case of naraechagi, dwitchagi and dolgaechagi, the frequency of Foreign male athletes was shown to be higher. The heavy weight group: Between groups, in case of and eolgul-dolryeochagi, naraechagi and dwitchagi, the frequency of Korean male athletes was shown to be higher and in case of momtong-dolryeochagi, tchikeachagi and dolgaechagi, the frequency of Foreign male athletes was shown to be higher.

사마귀류 추출물의 생물학적 활성 비교

허진철,황재삼,강석우,윤치영,이상한 慶北大學校農業科學技術硏究所 2007 慶北大農學誌 Vol.25 No.-

In order to investigate the availability of insect resources for agrobiotechnological or medical purposes, we examined antioxidant (DPPH and FRAP assay) and cell viability by oxidant stress and NO inhibition assay by treatment of the extracts of Statilia maculata Thunberg, Tenodera angustipennis Saussure and Tenodera aridifolia Stoll. We found that Tenodera angustipennis Saussure and Tenodera aridifolia Stoll extract (DW, etanol, methanol) had high levels of anti-oxidant activity, whereas Tenodera aridifolia Stoll extract showed increased cell viability by hydrogen peroxide and inhibition of NO production. These findings suggest that Statilia maculata Thunberg, Tenodera angustipennis Saussure and Tenodera aridifolia Stoll, extract have potentials to be developed for agrobiotechnology or medicinal use, indicating that mechanistic study including inhibition against molecular inflammation will show a possibility for the development of useful insect resources.

꽃집 및 꽃 전문 온라인 쇼핑몰의 품목별 매출 실태조사

허북구,박윤점,윤재길,박상현 한국화훼연구회 2002 화훼연구 Vol.10 No.2

광역시 소재 꽃집 10곳과 서울 소재 꽃전문 온라인 쇼핑몰 3곳의 매출실태를 조사하였다. 꽃집의 매출액은 절화상품(65.0%), 관엽식물(19.3%), 난(14.8%), 기타(0.9%)순으로 많았으며, 품목별로는 경조화환(32.5%), 꽃바구니(23.4%), 관엽식물(19.3%), 난(14.8) 순으로 많았다. 온라인 쇼핑몰의 매출액은 절화상품(87.6%), 난(5.8%), 관엽식물(3.4%), 기타(3.2%)순이었으며, 품목별로는 꽃바구니(37.0%), 박스플라워(23.5%), 꽃다발(20.1%), 난(5.8%) 순으로 많았다. 판매건수는 꽃집의 경우 꽃바구니(28.1%), 꽃다발(20.8%), 관엽식물(15.0%)의 비율이 높았으며, 꽃 전문 온라인쇼핑몰은 꽃바구니(34.44%), 박스플라워(27.2%), 꽃다발(23.2%)의 비율이 높았다. 판매단가는 품목에 관계없이 꽃 전문 온라인 쇼핑몰이 꽃집 보다 비싸게 조사되었다. 꽃집에서 꽃 판매 형태는 가정용 절화는 100% 꽃다발은 77%가 직접 방문에 의해 판매되었고, 꽃바구니, 꽃다발, 박스플라워는 80%이상이 전화주문에 의해 구매된 것으로 나타났다. This survey was conducted to investigate the actual condition of flower sale in shopping mall for flower and flower shop, which is located in some metropoltan cities. In the case of flower shop. rate of selling amount is 65% for cut flower, 19.3% for foliage plant, 14.8% for orchid and 0.9% for others. Among the cut flowers, wreath for celebration or condolence account for 32.5%, flower basket 23.4%. foliage plant 19.3% and orchid 14.8%. In the case of online shopping mall, rate of selling amount is 87.6% for cut flower, 5.8% for orchid and 3.4% foliage plant. Number of sale, in flower shop, was very high orderly at flower basket(28.1%), bouquet(20.8%) and foliage plant(15%). However, shopping mall showed that number of sale was high at flower basket(34.4%), box flower(27.2%) orderly. Sale price was higher in online shopping mall than in flower shop independent on items. Form of flower sale, in flower shop, was appeared that 100% for home and 77% for bouquet were soled by visiting, above 80% of flower basket, bouquet and box flower were soled by telephone.

Consideration of Diluents Selection and Input Amounts of the Hunter Process for Tantalum Production

Jae‑Jin Sim,Sang‑Hoon Choi,Yong‑Kwan Lee,Sung Gue Heo,Taek‑Soo Kim,Seok‑Jun Seo,Kyoung‑Tae Park 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.7

Tantalum (Ta) is a heavy refractory metal with an atomic weight of 180.95 g/mol, a density of 16.6 g/cm3, and a high meltingpoint of 3017 °C. With its refractory characteristics, it shows excellent chemical and physical stability as well as corrosionand heat resistance at elevated temperatures. The demand for Ta metal and related compounds is increasing with the expansionof the electronics and chemical industries. The Hunter process was proven to be effective in producing Ta powder in1953. Hunter proposed a method in which potassium heptafluorotantalate (K2TaF7) was reduced by sodium (Na). Thus far,this process has been the primary commercial method to produce Ta powder. In this study, quantitative differences wereanalyzed for diluent selection. Additionally, consideration was given to changes in the caloric value depending on the inputamount of diluents. Finally, the optimum material input and the properties of the prepared Ta were analyzed. Stoichiometricratios of K2TaF7(1 mol), NaCl (6.2–6.7 mol), Na (5–7 mol) were weighed, to perform a metallothermic reduction reaction. After the reaction, the tantalum powder was recovered and the flush process was carried out. After that, it was dried in avacuum atmosphere. Physical properties such as oxygen concentration, PSA, ICP-OES, and XRD of powder were conductedto evaluate the characteristics of Ta powder that was finally manufactured.

도암호의 수질과 어류군집 특성 연구

이상하,최재석,이광열,장영수,임인수,허우명,김재구,김범철 강원대학교 부속 환경연구소 2005 Journal of the Environment Vol.2 No.-

To investigate nutrient dynamics of the lake and fish community, both water and fish samples were collected at three different areas (dam site, upper inflowing and downstream of lake outfow) for one year from Sep.2004 to Aug.2005 During the experimental periods, mean concentration of chl, a in epilimnetic layer (0-5m) was 18.5mg^(-3) and transparency ranged from 0.3m to 2.4m, respectively. In nutrient, mean concentrations of TP and TN were 111 mgP m^(-3) and 4.4 mgN L^(-1), respectively. Based on the water quality standard suggested by U.S.EPA(*1976), the trophic state of Lake Doam was classified as eutrophic state. Total number of fish collected in Lake Doam was 9,600 indiveduals in 26 species of 6 family. Sixteen of Korean endemic soecies including H. mylodon, A. signifer, P. tenuicorpa occurred. O. mykiss as introduced fish was also found in Lake Doam. Dominant and subdominant species were P. herzi and Z. platypus that took about 34.6% and 22.5% of total fish composition, respectively. Six species including A. signifer. P. tenuicorpa. and R. kumgangensis were rare in Lake Doam. Pelagic typw of figh commonly occurred at upper regions, whereas benthic type was mainly domenated at downstream area. Therefore, pollution source inflowed from the upper regions did not seriously affect downstream area (Songcheon water system) due to the role of dam as pollutant barrier. In addition high appearance of Comat type of fish that si hybrid between gold fish (C.auratus) and C. auratus was found in the lake, It was unclear the reasons that high prorortion of mutant species apperared in the lake. Further more researches are required in this area.