Modified Nance appliance를 이용한 매복치의 교정치료

문철현(Cheol-Hyun Moon),이동근(Dong-Gun Lee) 대한치과의사협회 2007 대한치과의사협회지 Vol.45 No.4

저자들은 modified Nance appliance를 이용하여 환자의 협조에 의존하지 않고 매복된 치아의 교정적인 맹출을 시행하여 양호한 결과를 얻을 수 있었다. 특히 Moon’s appliance를 이용하여 동일 악궁 내에서 약하고 정교한 지속적인 힘을 적용 할 수 있었으며, 힘의 방향을 바꾸기 위한 과정에서 장치 전체를 철거해야 하는 번거로움을 해소 할 수 있었다. Traction of impacted tooth often requires patient compliance to place elastics to surgically exposed impacted tooth. It can be very difficult and time-consuming. The aim of this article was to describe an impacted tooth tractor, Moon s appliance, which was modified from the Nance holding arch appliance. Moon s appliance eliminates patient compliance and generates a light continuous force. We achieved the desired treatment results for impacted tooth using this appliance. This new fixed appliance can be a reasonable alternative to conventional appliances.

내동정맥루술후의 수지운동이 동정맥루의 혈류와 개존에 미치는 영향

신현석,조원현,이성문,우성구,김현철 大韓脈管外科學會 1995 大韓脈管外科學會誌 Vol.11 No.1

Distribution and mitochondrial DNA tracing of the invasive Argentine ants (Linepithema humile) in South Korea

Park Sang‐Hyun,Ha Young‐Ho,Kim Dong Eon,Kim Chang‐Jun,Choi Moon Bo 한국곤충학회 2021 Entomological Research Vol.51 No.3

Argentine ants (Linepithema humile) are one of the world’s most invasive species and were first reported in South Korea, near Busan Port in 2019. The distribution of their initial spread was investigated here from April to July 2020. In the invasion area, numerous nests and individuals were identified, indicating that they had settled and successfully invaded the habitat. To track the invasion of the Argentine ants we conducted haplotype analysis using COI, COII, and Cytb sequences of their mitochondrial DNA. The invasive ants had the same mitochondrial haplotype (H3) as Argentine ants from America (Chile, Ecuador, Bermuda) and East Asia (Japan). When comparing the import trade volumes at Busan port with the Argentine ant haplotypes from other countries, it was determined that the invasive ants may have originated from the United States or Japan. Numerous ecological and economic impacts due to their invasion and spread in other countries has previously been reported. Therefore, prompt control measures for the Argentine ants found at Busan port, at this relatively early stage of settlement, is required.

Consistency of seasonal patterns of insect succession on pig cadavers at Yeongdo Island in Busan, Korea

Park Sang‐Hyun,Moon Tae‐Young 한국곤충학회 2021 Entomological Research Vol.51 No.1

Cadaver insects cause dead bodies to break down in ecological processes. Still, the knowledge has been accumulated slowly about the structure and role of the insect assemblages attending to death scenes. This study analysed the successional patterns of insects on pig cadavers in the spring, summer, and autumn from 2016 to 2019 at Yeongdo Island, Busan, South Korea. A sum of 71 insect species belonging to four orders and 21 families were sampled. Predominant insects were largely Diptera and Coleoptera. The majority of the flies were the calliphorids as Chrysomya pinguis (Walker) and Lucilia porphyrina (Walker). The most common beetles were Creophilus maxillosus (L.), Omosita japonica (Reitter), and Staphylinidae sp. regardless of seasons. Occurrence matrices were made from the successional patterns of insect species during 42 sampling intervals in the spring, 38 sampling intervals in the summer, and 26 sampling intervals in the autumn. Permutation analyses of the occurrence matrices showed that the patterns of succession were similar between spring 2016 and 2017 (P = 0.019), between summer 2016 and 2017 (P = 0.003), and between autumn 2016 and 2019 (P = 0.002). The result shows that there are clear patterns in succession between seasons, and provides the reference data to presume the death time, at least in the southeast part of South Korea.

발열을 동반한 호중구감소증에서 Cefepime 단독투여와 Ceftazidime 및 Tobramycin 병합투여의 효능비교

정현욱,채제욱,강미라,양정채,문치숙,기현균,장현하,오원섭,김기현,백경란,이남용,송재훈 대한감염학회 2004 감염과 화학요법 Vol.36 No.6

목적 : 국내에서 발열을 동반한 호중구감소증이 있는 악성 종양환자에게 경험적 항생제로 베타락탐계 항생제와 아미노배당체의 병합요법의 사용이 일반적이다. Cefepime은 광범위 항균 작용을 가지고 있어, 그람 음성균 뿐만 아니라 그람 양성균에 대해서도 우수한 효과를 나타낸다. 재료 및 방법: 발열을 동반한 호중구감소증이 있는 악성 종양환자를 대상으로 무작위, 공개, 비교 연구를 시행하였다. 대상 환자를 무작위로 cefepime 단독요법군과 ceftazidime 및 tobramycin 병합요법군으로 나누어 투여하고 각각의 임상적 효능과 안전성을 비교하였다. 구강및 인후 점막염이 있는 환자에서 분리된 녹색 연쇄알 구균에 대한 항생제 내성 정도를 조사하였다. 결과 : 대상환자 89명 중 CA 투여군이 48예(53.9%), CT 투여군이 41예(46.1%)이었다. 발열의 유형별로 MDI는 18예(20.2%), CDI는 9예(10.1%), UF는 62예(69.7%)로 두 군 간에 차이가 없었다. CA 투여군과 CT 투여군의 임상적 호전률은 시험약 투여 후 2-4일째 각각 91.7%, 85.4% (P=0.31), 치료 종료 시 각각 91.7%, 100% (P=0.15)로 두 군간에 유의한 차이가 없었다. 치료 종료 시 CA 투여군과 CT 투여군의 세균학적 소실률은 모두 100%로 두 군간의 유의한 차이가 없었다(P=0.78). 점막염이 있는 환자로부터 녹색 연쇄알 구균이 분리된 경우는 25예(28.1%)이었으며, 분리된 녹색 연쇄알 구균은 penicillin, ceftriaxone, cefepime, vancomycin에 모두 감수성을 보였다. 약제 관련 이상 반응의 발생 빈도도 두 군간에 유의한 차이가 없었다. 결론 : 발열을 동반한 호중구감소증이 있는 악성 종양환자의 경험적 항생제로서 cefepime 단독요법은 ceftazidime 및 아미노배당체의 병합요법만큼 효과적이고 안전하였다. Background : Broad-spectrum antibiotic therapy has been recommended as an empirical regimen in cancer patients with febrile neutropenia. Cefepime is a fourth generation cephalosporin with good activity against both gram-positive cocci and gram-negative bacilli. Materials and Methods : To compare the efficacy and safety of cefepime alone with ceftazidime plus tobramycin as empirical regimen for adult cancer patients with febrile neutropenia, a randomized, open label, comparative trial was performed. If the patient showed clinical improvent 72 hours, antibiotic could be changed to oral ciprofloxacin. Clinical and microbiological responses were determined at 72 hours and at the end of therapy. To investigate the antimicrobial resistance of viridans streptococci, swab cultures were obtained from throat in all enrolled patients and antimicrobial susceptibility tests were performed by using microdilution method according to the NCCLS. Results : A total of 89 patients were enrolled. Forty-eight patients received cefepime alone (CA), and 41 patients received ceftazidime plus tobramycin (CT). Demographic and baseline clinical characteristics were similar in both groups (P>0.05). The initial clinical success rate at day 2-4 in group CA (91.7%) was similar with that in CT group (85.4%) (P=0.31). At the end of therapy, the final clinical success rate in CA group (91.7%) was similar to that in CT group (100%) (P=0.15). In 18 patients, with microbiologically defined infections, the eradication rate was 100% in both groups. Adverse events including liver dysfunction (21.3%) and renal dysfunction (2.2%), were similar in both groups (P=0.87). Viridans streptococci were isolated from the throat cultures in 25 cases, and all of these strains were susceptible to penicillin (MIC_(90) 0.12 ㎍/mL), cefepime (1 ㎍/mL), and vancomycin (0.12 ㎍/mL). Conclusion : Efficacy and safety of cefepime monotherapy was comparable to the combination of ceftazidime and tobramycin. It could be used as an alternative empirical regimen for treating cancer patients with febrile neutropenia.

The impact of blowflies on pig cadaver decomposition on Yeongdo Island, Busan, South Korea

Park Sang‐Hyun,Baek Seung‐Ho,Moon Tae‐Young 한국곤충학회 2021 Entomological Research Vol.51 No.11

The decomposition process is an important factor in forensics, and flies play a crucial role in the decomposition of animals and humans. However, there remains limited information on the effect of flies that attend death scenes. This study assesses the effect of the presence or absence of blowflies on the rate and process of cadaver decomposition in the spring, summer, and autumn from 2016 to 2020 on Yeongdo Island, Busan, South Korea. Nine blowfly species belonging to four genera in two subfamilies were sampled. The blowflies that approached the cadavers differed between seasons, but Chrysomya pinguis (Walker) was the dominant species regardless of the season. Blowfly presence on cadavers significantly affected the duration of the decomposition stage and the pattern of weight loss in nearly all scenarios. With the presence of blowflies, the decomposition rate was four times faster in spring, three times faster in summer, and nine times faster in autumn. These results show that the presence or absence of blowflies is an essential factor in the decomposition process of cadavers. Therefore, it should be taken into account when estimating postmortem intervals in medicolegal forensic entomology.

Forensic implication of cadaveric behaviors of the Japanese pavement ant (Tetramorium tsushimae Emery) attending to rabbit cadavers

Park Sang‐Hyun,Moon Tae‐Young 한국곤충학회 2020 Entomological Research Vol.50 No.4

It is noticed by some researchers that ants may cause some forensic confusion in understanding death scenes. In the aspect of relationship between the ant-animal decomposition, we observed the behavior of ants congregating on dead animals. Amongst various species of ants visiting dead rabbits, Tetramorium tsushimae Emery was noticeable in producing scratched scars, mounds, and nests around dead rabbits and covering them with soils. The behaviors are likely to interfere or to disturb the usual process of decomposition succession lead by maggots. We discussed that a series of cadaveric behaviors of T. tsushimae may be used as a potential forensic hint not to misunderstand death scenes disturbed by the species.

월아산 지역의 관속식물상에 관한 연구

문현식,노일,조현남 경상대학교 농업생명과학연구원 2003 농업생명과학연구 Vol.37 No.4

본 연구는 월아산 지역의 관속식물상을 파악하여 식물자원 보전의 기초자료를 제공하고자 수행 되었다. 월아산의 관속식물상을 조사한 결과, 59과 114속 131종 13변종 2품종 등 146종류가 확인되었다. 우리나라 특산식물은 병꽃나무와 소사나무 2종이 나타났으며 환경부에서 지정한 평가단위별 특정식물은 4등급 5분류군, 3등급 5분류군으로 총 10분류군으로 확인되었다. 평가단위 5개 등급에서 얻은 평가점수는 70점으로 나타났다. This study was carried out to offer the raw data of conservation of plant resources with grasping the vascular plant of Mt, Wola. The vascular plant species of Mt. Wola were summarized as 146 taxa; 59 families, 114 genus, 131 species, 13 varieties, 2 forma. The two taxa were recorded in the surveyed sites as the endemic plants; Carpinus coreana and Weigela subsessilis. The specific plants which is categorized to Degree by the Ministry of Environment appeared as 10 taxa; Degree Ⅳ was 5 species and Degree Ⅲ was 5 species. The mark evaluated by the Degrees of five evaluation unit was 70.

데이타베이스 시스템에서 3차 저장 장치의 효율적 활용을 위한 고려사항

문찬호,김영성,강현철 중앙대학교 생산공학연구소 1998 생산공학연구소 논문집 Vol.7 No.1

멀티미디어 데이타 서비스 응용과 같이 대용량 데이타의 저장 및 처리를 필요로 하는 DBMS의 저장 장치로 기존의 디스크 뿐만 아니라 테이프 라이브러리 또는 광 디스크 쥬크 박스와 같은 3차 저장 장치가 고려되고 있다. 본 논문에서는 기존의 주기억장치 버퍼와 디스크로 구성된 저장 계층 구조를 갖는 DBMS에 3차 저장장치를 부착하고자할 때, 이의 효율적인 활용을 위한 고려사항을 제시한다. The tertiary storage devices such as tape libraries and optical jukeboxes are now employed as storage for the DBMS to store a huge volume of data that needs to be processed in applications like multimedia data services. In this paper, we present issues to be considered to efficiently incorporate the tertiary storage to the preexisting DBMS which conventional storage hierarchy that consists of the main memory buffers and the disks.

한우의 반추위내에서 요소 및 암모니아처리 볏짚과 황산병용처리 볏짚의 In situ 유기물 분해율

문승식,정현승,박성진,유성오 진주산업대학교 농업기술연구소 1997 農業技術硏究所報 Vol.10 No.-

본 시험은 볏짚의 수분함량을 30%로 조절하여 농업용 요소 6%를 수용액상태로 처리한 요소처리 볏짚과 암모니아가스 3%를 처리한 암모니아처리 볏짚을 밀봉상태로 45일간 보관한후 개봉하여 이들 처리볏짚의 1/2에 해당하는 양에 농황산 2.2%를 처리하여 요소-황산병용처리 및 암모니아-황산병용처리 볏짚을 제조하여 화학적 조성을 분석하고, 한우의 의해 in situ 유기물 분해율을 측정하였으며, 그 결과를 요약하면 다음과 같다. 1. 볏짚의 유기물 소실율은 암모니아-황산병용처리>암모니아처리>요소-황산병용처리>요소처리 볏짚순으로 높았다. 2. 유기물의 잠재적 소화율은 타처리에 비하여 암모니아처리 볏짚에서 높은 경향을 나타내었다. 3. 볏짚의 유기물분해율(P)은 암모니아-황산병용처리>암모니아처리>요소-황산병용처리>요소처리 볏짚순으로 높았다. 4. 사료섭취량에 따른 한우의 반추위내 통과율이 시간당 6%일 때 72시간 발효시 예상유기물 분해율(ED)은 요소처리, 암모니아처리, 요소-황산병용처리 및 암모니아-황산병용처리 볏짚이 각각 18.97, 21.63, 24.66 및 29.09%이였다. This study was carried out to investigate the effects of two phase treatments of urea-sulfuric acid and ammonia-sulfuric acid combination on in situ organic matter degradability of rice straw as ruminant feedstuff. Rice straw were treated with 6% urea (W/DM) or 3% ammonia (W/DM) for at least 45 days and further with sulfuric acid for overnight to complete the combination treatments. The treated rice straws were then sun-dried, and the chemical composition of the treated rice straws were analyzed. Also, Four Korean native bulls (550±30.5kg) were used to determine the in situ organic matter degradability in rumen. The treatments included urea-treated, ammonia-treated, urea·H_2SO_4 combination-treated and ammonia·H_2SO_4 combination-treated rice straws. In situ disappearance of organic matter (OM) in the rumen was significantly (P<0.05) higher in ammonia·H_2SO_4 combination-treated rice straw than those of other treatments. Potential digestibility of OM were slightly higher in ammonia-treated rice straw than those of other treatments. Organic matter degradabilities (P) in the rumen was high in ammonia·H_2SO_4 combination-treated with following by ammonia-treated, urea·H_2SO_4 combination-treated and urea-treated rice straw. When passage rate of 6% in rumen of korean native bulls was applied, effective degradabilities (ED) of OM of urea-treated, ammonia-treated, urea·H_2SO_4 combination-treated and ammonia·H_2SO_4 combination-treated rice straw were 18.97, 21.63, 24.66 and 29.09% after incubation for 72 hrs time, respectively.