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Full-mouth rehabilitation with immediate loading and guided implant surgery: a case report
Chan-Ho Jung,Yang-Yeol Tae,Sung-Ouk Kim,Hyun-Jun Park,Kwan-Soo Park 대한치과이식임플란트학회 2020 The Korean Academy of Implant Dentistry Vol.39 No.4
This case report presents a case of immediate loading with guided surgery in a patient who had complete edentulous jaws. The patient experienced discomfort in the upper and lower removable complete dentures, and wanted to change it fixed complete prosthesis. The full-mouth rehabilitation was planned using 16 implant fixtures, eight each for maxilla and mandible. For guided surgery, surgical templates were fabricated by implant planning system, and provisional prostheses and customized abutments for immediate loading were fabricated by computer aided design and computer aided manufacturing technology. 28 months after the surgery, clinical and radiologic complications were not observed, and the patient’s masticatory function and esthetics were well-maintained.
부산, 경남 일부 지역 주민들의 생선 섭취량과 혈중 수은 농도의 관련성
김찬우(Chan woo Kim),김영욱(Young Wook Kim),채창호(Chang Ho Chae),손준석(Jun Seok Son),김자현(Ja Hyeon Kim),박형욱(Hyoung Ouk Park),강윤식(Yune-Sik Kang),김장락(Jang-Rak Kim),홍영습(Young Seoub Hong),김대선(Dae-Seon Kim),정백근(Baek 한국농촌의학 지역보건학회 2012 농촌의학·지역보건 Vol.37 No.4
Objectives: The objective of this study was to identify the relationship between fish consumption and blood mercury levels in a sample of adult Koreans. Methods: The study subjects were 299 residents of Busan (male: 65, female: 234) and 185 residents of Namhae (male: 69, female: 116), South Korea. Demographic characteristics, current smoking, current drinking, fish consumption per week, past history of amalgam treatment, and residential district were recorded by trained interviewers in June and July, 2009. We considered a portion of fish to be equivalent to 70 gm weight, and calculated amounts of fish consumed per week. Using chi-square tests, t-tests, ANOVA, and multiple linear regression analysis, we estimated the relationships between blood mercury levels and amount of fish consumed per week and other factors. Results: The mean blood mercury level of our subjects was 6.61 ㎍/L, higher than the criterion defined by the United States Environmental Protection Agency (EPA) (5.8 ㎍/L). In multiple linear regression analysis, residential district and amount of fish consumed per week were associated with blood mercury levels. However, marital status, current drinking, and gender, and age were not associated with blood mercury levels. Conclusions: In conclusion, we suggest the implementation of systematic and periodic population-based studies to decrease the risks of mercury poisoning among South Koreans who consume fish as a regular part of the diet.
Evaluation of Optimum Decapitation Method in Vinyl Mulching Soybean Cultivation
Sang-Ouk Shin,Hyun-Tae Kim,Ha-Sik Shim,Young-Hoon Lee,Byuong-Won Lee,Chan-Sik Jeong,In-Yoel Baek,Keum-Yong Park 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04
overgrowth of soybean plants and thereby brings about lodging, decrease in pod number, damage by disease and insect pest, etc. This experiment was carried out to investigate optimum decapitation method in vinyl mulching soybean cultivation. Sinbuseoktae, local soybean variety was sown on May 25 and June 15 in 2009. Decapitation treatments(Non-decapitation, V8 stage-stem, V8 stage-apex, Flowering initiation stage, V8 stage-Stem+Flowering initiation Stage) were practiced on major growth stage on May25 seeding. Lodging did not occur in apex decapitation at V8 stage while other treatments had severe lodging. NAR from R5 to R7 stage was also highest in apex decapitation at V8 stage, which meaned optimum plant organ structure in utilizing light. On the other hand, flowering date and maturity date among treatments were similar. Seed yield in apex decapitation at V8 stage was highest with 274kg/10a, followed by flowering initiation stage with 249kg/10a. The apex decapitation at V8 stage had 26% yield increase as compared with the control of 216kg/10a due to heavy 100-seed weight.
신상욱 ( Sang Ouk Shin ),김현태 ( Hyun Tae Kim ),이영훈 ( Young Hoon Lee ),정찬식 ( Chan Sik Jeong ),이병원 ( Byong Won Lee ),고병구 ( Byong Gu Ko ),백인열 ( In Youl Baek ),박금룡 ( Keum Yong Park ) 한국국제농업개발학회 2010 韓國國際農業開發學會誌 Vol.22 No.4
콩의 비닐피복 재배시에 최적적심 방법을 구명하고자 본 시험에서 적심방법별 주요 특성 및 수량 비교한 결과는 다음과 같다. 1. R5 stage의 건물중은 두 품종 모두에서 V8 stage의 순적심과 개화시 적심에서 많았는데 이들 처리는 대원콩에서는 무처리 보다 가벼웠고 신부석태에서는 무처리 보다 무거웠다. 그리고 이들 처리는 최적엽면적 지수을 확보하였다. 2. 포장도복은 V8 stage의 순적심에서는 발생하지 않았고 개화시 적심에서는 2~5 정도의 도복이 발생하였다. 3. 개화기는 품종별 처리간 모두 같았고, 성숙기는 대원콩에서 1~2일의 차이를 보였지만 신부석태는 차이가 없었다 4. 종실비대기간인 R5 stage에서 R7 stage까지의 두 품종 평균 순동화량(NAR)은 V8 stage의 순적심과 개화시 적심에서 비슷하면서 가장 높았다. 5. 두 품종 평균수량은 V8 stage의 순적심과 개화시 적심에서 가장 높았다. 6. 외관적 품질에서는 V8 stage의 순적심에서 백립중이 가장 무거웠고 미숙립 및 다른 피해립율도 낮았다. This experiment was carried out to make clear optimum decapitation method for yield increase of soybean and to reduce lodging as soybean is cultivated in vinyl mulching. Results are as follow; In R5 stage, dry matter weight in two varieties was higher in V8 (terminal) treatment and flowering initiation stage treatment which were lighter than control in Daewon and heavier in Sinbuseoktae. Also, LAI(Leaf Area Index) in these two treatments was suitable. Lodging index in V8 (terminal) treatment was not occurred whereas in flowering initiation stage treatment was ranged from 2 to 5. Flowering date in two varieties was not differant among five treatments and maturity date was similar. NAR (Net Assimilation Rate) from R5 to R7 stage was higher in both V8 (terminal) and flowering initiation stage treatment showing similar mean value. Although mean values was not significantly different, the yield of terminal decapitation in V8 stage which was similar to flowering initiation stage treatment was higher. Also, 100-seed weight of terminal decapitation in V8 stage was the heaviest and apparent seed quality was favorable. Consequently, the optimum decapitation method in vinyl mulching cultivation of soybean was terminal decapitation in V8 stage.
Macrolide계 항생물질 동시분석법 확립 및 모니터링
박상욱(Sang-Ouk Park),이상호(Sang-Ho Lee),안종훈(Jong-Hoon Ahn),정영지(Young-Ji Jung),김성철(Seong-Cheol Kim),김지연(Ji-Yeon Kim),금은희(Eun-Hee Keum),성주현(Ju-Hyun Sung),김상엽(Sang-Yub Kim),장영미(Young-Mi Jang),강찬순(Chan-Soon K 한국식품과학회 2010 한국식품과학회지 Vol.42 No.3
축산물 중 macrolide계 항생물질 3종을 신속분석하기 위하여 효과적인 전처리법을 설정하고 고속액체크로마토그라피(HPLC)를 이용한 동시분석법을 제시하였다. 대상물질은 tilmicosin, tylosin, spiramycin이며, 확립된 분석법을 이용하여 모니터링을 실시하기 위하여 전국 6개 도시인 서울, 부산, 대전, 인천, 대구, 광주에서 수입원산지가 표시된 쇠고기와 돼지고기 및 그 가공품을 수거하여 분석하였다. 전처리법에 있어서 solid phase extraction(SPE)법에 비하여 액상추출법이 더 높은 회수율을 나타내었으며 전처리 단계도 간단하여 대상 항생물질을 분석하기에 적절하였다. 3종의 항생물질 분리를 위한 컬럼은 C18(250 ㎜×4.6 ㎜, 5 ㎛)을 사용하였으며, HPLC 이동상은 0.025M phosphate buffer(pH 2.5) 및 acetonitrile을 이용한 gradient 조건을 설정하였다. UV 검출파장은 spiramycin 경우 232 ㎚이고, tilmicosin과 tylosin은 288 ㎚을 이용하였다. 평균회수율은 83.0-90.2%이였으며, 검출한계는 각각 7(spiramycin), 12(tilmiconsin), 12(tylosin) ng/g으로 나타났다. 수입 축산물의 항생물질에 대한 안전성을 검토하기 위하여 국내 유통중인 수입축산물 및 그 가공품을 대상으로 하여 모니터링을 실시한 결과, 시료는 전국 6개 대도시에서 126건 구입하였으며 모든 시료에서 macrolide계 항생물질이 검출되지 않았다. In this study, a simple and rapid pre-treatment method based on liquid extraction was applied for the simultaneous determination of three macrolides (spiramycin, tylosin, and tilmicosin) residues. In these studies, the stock farm products was used as a matrix sample. When the liquid extraction method was compared with the solid phase extraction (SPE) method, the former showed higher recovery percentages and simpler steps than the latter. The macrolids were separated using a reverse-phase C18 (250 ㎜×4.6 ㎜, 5 ㎛) column and a gradient elution with mobile phases consisting of phosphate buffer (pH 2.5) and acetonitrile. Tylosin and tilmicosin were detected at 288 ㎚ and spiramycin was detected at 232 ㎚. The average recovery percentage ranged between 83.0-90.2% for samples spiked with the three macrolids at 50 and 100 ng/g The validation results showed that the limit of detection (7 (spiramycin), 12 (tilmiconsin), 12 (tylosin) ng/g)) was under the regulatory tolerances and the linearity from calibration curves was satisfactory for determining the multi-residue of three macrolids in farm products. Monitoring samples were collected at the main cities in Korea as Seoul, Busan, Deajeon, Incheon, Deagu, and Gwangju. Microlide antibiotics were not detected in most samples.
First outbreaks of cricket disease in South Korea
Eunsun Kim,Chan-Ouk Kim,Kibeom Park,June-Sun Yoon 한국응용곤충학회 2024 한국응용곤충학회 학술대회논문집 Vol.2024 No.04
귀뚜라미는 단백질 함량이 높고 필수아미노산이 풍부하여 세계적으로 식용과 사료용 곤충으로서 가치가 높 다. 국내에서 쌍별귀뚜라미(Gryllus bimaculatus)는 사육이 용이하다는 장점이 있고 주로 파충류, 물고기 등의 사료로 대량 소비되고 있기 때문에 매우 중요한 산업곤충으로 자리매김하고 있다. 그러나 최근 쌍별귀뚜라미의 활동성이 저하되고 다리가 마비되는 등 이상 증상이 발생하여 대량 폐사된 농가가 급증하였다. 이에 대한 원인을 규명하기 위해 질병 발생 농가로부터 귀뚜라미 시료를 수집하여 RNA를 추출하고 metatranscriptomic analysis 를 수행하였다. 그 결과, 신규한 덴소바이러스(Densovirus)가 대량 폐사의 원인임을 밝혀내었고, 이 바이러스를 Gryllus bimaculatus densovirus (GbDV)로 명명하였다. 또한, GbDV의 유전체 분석 결과, genome size는 5,643 bp로 5개의 ORFs(Open Reading Frames)을 포함하며, 왼쪽에는 세 개의 Non-structural proteins을 포함하는 유전자(NS1, NS2, NS3)가 존재했고 오른쪽에는 두 개의 Structural proteins을 포함하는 유전자(VP1, VP2)가 존재했다. 본 연구 는 알 수 없는 곤충 질병의 원인을 밝혀내어 해당 질병에 대한 모니터링을 가능케 함으로써 산업곤충 질병의 예찰하고 확산을 방지하는 데 기여할 것으로 사료된다.