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오리알의 卵黃, 卵白 및 卵殼중 微量鑛物質의 含量分布에 관한 硏究
이명헌,김상근,이종진 충남대학교 수의과대학 동물의과학연구소 1994 動物醫科學硏究誌 Vol.2 No.-
This study was to assayed 9 trace minerals of Ca, P, K, Na, Mg, Fe, Zn, Cu, Mn in duck's egg yolk, egg white and egg shell by with Inductively Coupled Argon Plasma(ICAP). The results summarized as follows: 1. The levels of Ca, P, K, Na, Mg in duck's egg yolk, egg white and egg shell were 747.9ppm, 2216.6ppm, 620.0ppm, 345.5ppm, 30.9ppm and 52.9ppm, 136.5ppm, 1127.2ppm, 1638ppm, 69.1ppm and 220ppm, 814.6ppm, 298.0ppm, 535.2ppm, 812.2ppm, 1447.8ppm, respectively. The levels of K and Na of duck's egg are the highest compared with that of another constituents in eggs. 2. The levels of Fe, Zn, Cu, Mn in duck's egg yolk, egg white and egg shell were 22.7ppm, 14.3ppm, 0.98ppm, 0.25ppm and 5.0ppm, 0.29ppm, 0.48ppm, 0.02ppm and 3.4ppm, 2.1ppm, 0.96ppm, 0.56ppm, respectively.
한명철,김정관,최명욱,이왕근,김헌주 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-
The dental high-speed handpiece is one of the most popular and important devices that has been widely used as the main means of cutting tooth structure and restorative materials in dentistry, In consideration of usage and marketability of the dental handpiece, it is obviously worthy of investigating it. In this paper, a high speed dendal handpiece is developed through reverse engineering with 3D X-Ray CT equipment and wire cutter for the Mark II model in NSK. The demension of the handpiece parts is obtained through this process, and 3D modeling is performed with CATIA V5. The interference between parts can be examined through the part assembly in CATIA, and the performance is finally compared with Mark II model in NSK.
Lee, Ja Myoung,Lee, Young Seok,Kim, Young Baeg,Park, Seung Won,Kang, Dong Ho,Lee, Shin Heon The Korean Neurosurgical Society 2017 Journal of Korean neurosurgical society Vol.60 No.2
Objective : The objective of this study was to analyze the correlation between further compression and necrotic area in osteoporotic vertebral fracture (OVF) patients with contrast-enhanced magnetic resonance imaging (CEMRI). In addition, we investigated the radiological and clinical outcome according to the range of the necrotic area. Methods : Between 2012 and 2014, the study subjects were 82 OVF patients who did not undergo vertebroplasty or surgical treatment. The fracture areas examined on CEMRI at admission were defined as edematous if enhancement was seen and as necrotic if no enhancement was seen. The correlation between further compression and the necrotic and edematous areas of CEMRI, age, and bone mineral density was examined. Also, necrotic areas were classified into those with less than 25% (non-necrosis group) and those with more than 25% (necrosis group) according to the percentages of the entire vertebral body. For both groups, further compression and the changes in wedge and kyphotic angles were examined at admission and at 1 week, 3 months, and 6 months after admission, while the clinical outcomes were compared using the visual analog scale (VAS) and Eastern Cooperative Oncology Group (ECOG) performance status grade. Results : Further compression was $14.78{\pm}11.11%$ at 1 month and $21.75{\pm}14.43%$ at 6 months. There was a very strong correlation between the necrotic lesion of CEMRI and further compression (r=0.690, p<0.001). The compression of the necrosis group was $33.52{\pm}12.96%$, which was higher than that of the non-necrosis group, $14.96{\pm}10.34%$ (p<0.005). Also, there was a statistically significantly higher number of intervertebral cleft development and surgical treatments being performed in the necrosis group than in the non-necrosis group (p<0.005). Moreover, there was a statistical difference in the decrease in the height of the vertebral body, and an increase was observed in the kyphotic change of wedge angle progression. There was also a difference in the VAS and ECOG performance scales. Conclusion : The necrotic area of CEMRI in OVF had a strong correlation with further compression over time. In addition, with increasing necrosis, intervertebral clefts occurred more frequently, which induced kyphotic changes and resulted in poor clinical outcomes. Therefore, identifying necrotic areas by performing CEMRI on OVF patients would be helpful in determining their prognosis and treatment course.
HPLC를 이용한 육류중 바이피리딜리움계 제초제 잔류분석
이희수,이혜숙,조병훈,김병용,이광직,이명헌,박은정,김문배,이성모,조준형,박종명,정갑수,김옥경 한국수의공중보건학회 2001 예방수의학회지 Vol.25 No.4
A simultaneous and rapid method for determination of bipyridylium herbicides, paraquat dichloride and diquat dibromide have been developed in meat using high-performance liquid chromatography (HPLC) at UV 255/310nm. It is possible to detect effectively below maximal residue levels (MRL) set in CODEX and Korea with little amount of sample. Based on the collaborative studies in 3 laboratories, the mean of recovery within laboratory repeatability were 108.7%, 93.5% and 105.7%, respectively and the coefficient of variation were 6.9%, 9.8% and 12.1% in paraquat analysis. In case of diquat analysis, the mean of recovery were 86.3%, 87.0% and 86.3%, respectively and the coefficient of variation were 13.2%, 8.9% and 7.6%, respectively of which results would be acceptable to recommended guideline of CODEX. In addition, the coefficient of variation between laboratory repeatability were 7.9% and 9.7% in paraquat and diquat, respectively which would be also acceptable to the guideline of CODEX. In conclusion, the present method which would be equivalent to an official method of analysis makes feasible both for qualified determination in meat and for precise diagnosis of intoxification caused by paraquat and diquat, bipyridylium herbicides.
Variation of Univariate Flow Karyotypes and Chromosomal DNA Contents in Maize (Zea mays L.)
Lee, Jai-Heon,Lee, Myoung-Hoon,Kim, Kyung-Je The Korean Society of Crop Science 1998 Korean journal of crop science Vol.43 No.2
Analyses of now karyotypes using different maize (Zea mays L.) inbred lines have been performed. The accumulation and isolation of high quality and quantity metaphase chromosomes from root tips can be achieved from many kinds of maize lines. The chromosome suspensions were prepared by a simple slicing method from synchronized maize root tips and analyzed with a now cytometry. The variations of experimental now karyotypes were detected among inbred lines in terms of the positions and/or the numbers of chromosome peaks. The 2C DNA amount among 8 inbred lines ranged from 5.09 to 5.52 pg. The variability of DNA content in maize chromosome 1 was 9.1 % ranging from 0.685 to 0.747 pg. The selection of appropriate maize lines is critical for sorting specific single chromosome types. At least five different chromosome types can be discriminated and sorted from five maize lines.
Bovine tuberculosis in an Asian small-clawed otter (<i>Aonyx cinerea</i>) in the Republic of Korea
Lee, Hyunkyoung,Kim, Jae-Myung,Jang, Yunho,Lee, Kyunghyun,Baek, Kanghyun,Lee, Boram,Kim, Ha-Young,Lee, Myoung-Heon,Ryoo, Soyoon,Bae, You-Chan,Choi, Eun-Jin,So, ByungJae SAGE Publications 2015 Journal of veterinary diagnostic investigation Vol.27 No.5
<P>Bovine tuberculosis caused by <I>Mycobacterium bovis</I> has a wide range of hosts including cattle and humans, but its incidence in otters is very rare. Our report describes a case of bovine tuberculosis in an Asian small-clawed otter (<I>Aonyx cinerea</I>). A deceased female otter ~2–3 years of age that was raised in an aquarium was submitted to the Animal and Plant Quarantine Agency (Anyang, Republic of Korea) for autopsy in June 2013. Following gross pathological examination, many white nodules were observed in the lungs and mesentery. The nodules showed central necrosis infiltrated with lymphocytes and macrophages and surrounded by fibrous tissue. Acid-fast bacteria were detected in the necrotic foci, but no fungi were observed. Molecular analysis led to the detection of <I>M. bovis</I>, which is identified in otters in some European countries such as Spain and France.</P>