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손목 관절과 발목 관절 손상 환자의 진단에 있어 응급 초음파의 유용성
이성실 ( Sung Sil Lee ),김동언 ( Dong Un Kim ),박득현 ( Deuk Hyun Park ),조현영 ( Hyun Young Cho ),안성준 ( Seung Jun Ahn ),고찬영 ( Chan Young Kho ),신태용 ( Tae Yong Shin ),김영식 ( Young Sik Kim ),하영록 ( Young Rock Ha ) 대한외상학회 2007 大韓外傷學會誌 Vol.20 No.2
Purpose: Ultrasound is of proven accuracy in abdominal and thoracic trauma and may be useful for diagnosing extremity injury in situations where radiography is not available, such as disasters and military and space applications. However, the diagnosis of fractures is suggested by history and physical examination and is typically confirmed with radiography. As a alternative to radiography, we prospectively evaluated the utility of extremity ultrasound performed by trained residents of emergency medicine (EM) one patient with wrist and ankle extremity injuries. Methods: Initially, residents of EM performed physical examinations for fractures. The emergency ultrasound (EM US) was performed by trained residents, who used a portable ultrasound device with a 10- to 5-MHz linear transducer, on suspected patients before radiography examination. The results of emergency ultrasound and radiography and the final diagnosis were recorded, and correlations among them were determined by using Kappa`s test. Results: Thirty-nine patients were enrolled in our study. The average age was 36.6±19.3 years. There were radius Fx. (n=21), radius-ulna Fx. (n=1), ulna Fx. (n=1), and contusion (n=2) injuries among the wrist injury and lat.-med. malleolar Fx. (n=13), lat. malleolar Fx. (n=6), and med. malleolar Fx. (n=3) injuries among the ankle injury. Comparing EM US with radiography, we found the sensitivity, specificity, positive predictive value, and negative predictive value of EM US for Fx. diagnosis to be 100%, 66.7%, 97.3%, 100% and those of radiography to be 97.2%, 100%, 100%, and 75%, respectively. Kappa`s test for a correlation between the Fx. diagnosis of EM US and the final diagnosis of Fx was performed, and Kappa`s value was 0.787 (P = 0.004). Conclusion: EM US for Fx. can be performed quickly and accurately by EM residents with excellent accuracy in remote locations such as disaster areas and in military and aerospace applications. EM US was as useful as radiography in our study and had a high correlation to the final diagnosis of Fx. Therefore, ultrasound should performed on patients with extremity injury to determine whether extremity evaluation should be added to the FAST (focused abdominal sonography trauma) examination. (J Korean Soc Traumatol 2007;20:130-137)
열 스트레스에 의한 착색렌즈 코팅막의 표면 및 구성 성분비 변화
이성실(Sung-Sil Lee),송재명(Jae Myeong Song),김소라(So Ra Kim),박미정(Mijung Park) 한국안광학회 2018 한국안광학회지 Vol.23 No.2
Purpose: This study was aimed to investigate the changes in composition ratio and surface of colored spectacle lenses made of allyl diglycol carbonate treated with hard coating film, multi-layered coating film, and mirror coating film, respectively, caused by thermal stresses. Methods: The colored lenses were observed with a digital single lens camera and a polarizing microscope after the exposure for 4 hours at high temperatures of 25, 50, 75, and 100oC, and then further compared with the change in transparent lenses. In addition, the change in composition ratio of the coating films of the colored lenses was analyzed by using a laser-induced breakdown spectroscopy. Results: The surface changes of hard coating films of the colored lenses were not observed even with thermal stress of 100oC. The surface changes in multi-layered coating and mirror coating films of the colored lenses have been observed at a temperature of 75℃ and the surface damages have been detected at a lower temperature compared with the transparent lenses. The composition ratio in coating films of colored lenses was changed by thermal stresses, and the largest change was found in multi-layered coating film. Conclusions: The coatings of colored spectacle lenses have been found to be more sensitive to thermal stress than those of transparent lenses. In this study, it is suggested that methods for stabilizing the coating films should be considered in the case of colored lenses compared to the transparent lenses. The necessity for storage and management of colored lenses against repeated thermal stress in daily life is also suggested.
반추가축영양 : 한우 거세우의 반추위메탄가스 생성량에 대한 곡류사료원의 영향
이상철 ( Sang Cheol Lee ),김경훈 ( Kyoung Hoon Kim ),이성실 ( Sung Sil Lee ),오영균 ( Young Kyoon Oh ),설용주 ( Yong Joo Seol ),최창원 ( Chang Weon Choi ),백열창 ( Youl Chang Baek ),이강연 ( Kang Yeon Lee ),옥지운 ( Ji Woun Ok 한국동물자원과학회 ( 구 한국축산학회 ) 2012 한국축산학회지 Vol.54 No.1
본 연구는 거세 한우의 비육 기간에 보리나 옥수수 위주의 농후사료를 일당 증체량 0.7kg/일에 필요한 TDN량 6.9kg씩 급여하였을 때 장내 발효과정에 생성되는 메탄가스를 측정하는데 그 목적이 있다. 보리나 옥수수 급여구의 건물 섭취량은 차이가 없었으나 영양소별 섭취량은 보리와 옥수수의 영양성분의 차이에 의해서 보리 위주의 농후사료 급여구가 조단백질, 조섬유, 가용무질소물, 유기물, Neutral detergent fiber와 Acid detergent fiber의 섭취량이 유의적으로 섭취량이 높았고(p<0.05), 조지방과 조회분 섭취량은 옥수수 위주의 농후사료 급여구가 유의적으로 높았다(p<0.05). 각 영양소별 소화율은 보리나 옥수수 위주의 농후사료 급여 구 모두 건물, 조단백질, 조지방, 조회분 소화율에서 차이가 없었으나 조섬유, Neutral detergent fiber와 Acid detergent fiber 소화율은 보리 위주의 농후사료 급여 구에서 유의적으로 높았다(p<0.05). 호흡가스 발생량은 옥수수 위주의 농후사료를 급여했을 때가 산소 소모량 6.4%(p=0.32), 이산화탄소와 메탄생성량은 각각 15.4%(p=0.09)와 16.8%(p=0.09) 높은 경향이 나타났고, 메탄 배출계수는 보리나 옥수수 위주의 농후사료 급여 시 각각 43.6(kg/Head/Year)과 50.9(kg/Head/Year)로 산출되었다. 메탄전환계수는 보리와 옥수수 위주의 농후사료를 급여하였을 때 총에너지 섭취량은 각각 35.9 Mcal/d와 35.5Mcal/d씩 섭취했고 메탄으로 손실된 에너지는 12.2 Mcal/d와 14.9Mcal/d로 메탄가스 생성에 의한 메탄전환계수는 보리 위주의 농후사료 급여 구에서 4%(0.04 Ym)이었고, 옥수수 위주의 농후사료 급여 구에서 5%(0.05 Ym)로 나타났다. 따라서 위의 결과는 우리나라 한우의 사양 실정에 맞게 적용한 실험으로 향후 축산분야의 온실가스 저감을 위한 사양체계 및 메탄배출계수 산출연구에 대한 기초자료로 활용될 수 있을 것으로 판단된다. This study was conducted to investigate the effects of grain sources on the ruminal methane production in Hanwoo steers. Six Hanwoo steers(BW = 614.4 ± 8.3kg) were fed, on a DM basis(TDN 6.91kg), 10% rice straw and 90% barley or corn based concentrate, respectively, according to Korean Feeding Standards(Hanwoo). Each period lasted 18 days including a 14-day adaptation and a 4-day measuring period. The steers were in the ventilated hood-type respiration chamber system(one cattle per chamber) during each measuring period to measure heat and methane production for 1 day. Nutrient intake and digestibility were not affected by steer fed grain sources. Methane concentration was not affected by steer fed either barley or corn-based concentrate, respectively(0.022% vs. 0.025%). Methane production was greater by steers fed corn than those fed barley(119.3 g/day vs. 139.4g/day). This result indicated that methane emission factor by maintenance energy requirement for the late fattening Hanwoo fed corn was higher than the steers fed barley(43.6kg/head/year) vs. corn(50.9kg/head/year). Methane conversion rate (Ym) was 0.04 Ym and 0.05 Ym for barley and corn, respectively.