http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Isolation and Transcriptional Expression of CuZn Superoxide Dismutase from Codonopsis lanceolata
Lee,Kang,In,Jun-Gyo,Yu,Chang-Yeon,Yun,Song-Joong,Min,Byung-Hoon,Rho,Yeong-Deok,Kim,Moo-Sung,Yang,Deok-Chun 한국자원식물학회 2004 Plant Resources Vol.7 No.3
To investigate the defense mechanism against the abiotic stress, a cDNA clone encoding a CuZn superoxide dismutase (CuZnSOD) protein was isolated from a cDNA library prepared from tabroot mRNAs of Codonopsis lanceolata. The eDNA, designated ClSODCc, is 799 nucleotides long and has an open reading frame of 459 bp with a deduced amino acid sequence of 152 residues. The deduced amino acid sequence of ClSODCc matched to the previously reported CuZnSODs. Consensus amino acid residues (His-45, -47, -62, -70, -79, -119 and Asp-82) were involved in Cu-, Cu/Zn-, and Zn- binding ligands. The deduced amino acid sequence of ClSODCc showed high homologies (82%-86%) regardless of species. Expression of ClSODCc by oxidative stress was increased up to 1 h after treatment and declined gradually. Much earlier and stronger expression of ClSODCc was observed in the cold stress treatment.
Physical and chemical Effects on the sonication Treatment of chitosan solution
Lee, Keun Tai,Park, Seong Min,Park, Chan Kyu,Kim, Sang Moo 한국키틴키토산학회 1997 한국키틴키토산학회지 Vol.2 No.2
물리적 방법을 이용한 키토산 올리고당의 제조에 관한 기초 자료를 제시하기 위하여 키토산용액을 20kHz의 초음파로 처리하였으며, 초음파 처리 효과에 미치는 처리 조건의 영향을 조사하였다. 키토산 용액의 고유점도는 초음파 처리 5분까지는 급속하게 감소하였고 그 이후로는 서서히 감소하였다. 키토산 용액의 부피가 작을수록 초음파 처리효과는 컸으며, 키토산 용액의 온도는 초음파 처리에 별다른 효과가 없는 것으로 나타났다. 5분간 초음파 처리 후의 점도는 용매의 종류에 따라 큰 차이가 없었으나, acetate buffer의 경우 초음파 처리효과가 가장 컸다. pH가 높을수록 초음파 처리효과는 크게 나타났으며, 이온강도와 염의 종류에 따른 효과는 나타나지 않았다. 이상의 결과에서, 용액의 부피는 10~20ml, 온도는 20~30℃, 용액의 pH는 4.5, 그리고 용매의 종류는 acetate buffer로 하는 것이 최적 초음파 처리조건으로 추정된다. As the first step of studies related to production of chitooligosaccharides by physical methods, chitosan solution were sonicated with 20kHz and various treatment effects were examined to present fundamental data of sonicated chitosan solution. Intrinsic viscosity of chitosan solution sharply decreased from 3.76dl/g to 2.90dl/g until 5 minutes of sonication and then slowly decreased. With low volume of chitosan solution, sonication was very effective and temperature of chitosan solution slightly affected the efficiency of sonication. In case of changing the solvent, no significant differences were observed on the effect of sonication, however, acetate buffer had highest sonication effect among various solvents. The sonication effect was increased as the increasement of the value of pH, on the contrary, ionic strength and type of counterions showed no effect on sonication, With these results, we assumed that optimal sonication treatment would be as follows, solution volume was 10 ~20ml, temperature range was 20~30℃ , pH value of solution was 4.5 and type of solvent was acetate buffer
Lee, Hyun-Kyung,Ryu, Kyung-Sun,Kim, Moo-Gun,Park, Kwang-Won,Kim, Ryun-Ga,Roh, Sang-Hwa,Jung, Tae-Young,Park, Sang-Jun Korean Association of Maxillofacial Plastic and Re 2014 Maxillofacial Plastic Reconstructive Surgery Vol.36 No.1
Purpose: This study was designed for identification of the main clinicopathological features of cysts in the oral and maxillofacial regions. Methods: A retrospective observational study was conducted on 164 patients who had been diagnosed with cyst of the jaw, from the database of 168 histopathological diagnoses at the Department of Oral and Maxillofacial Surgery of Busan Paik Hospital at Inje University, from January 2009 to December 2011. The subjects were treated and the following variables were recorded: gender, age, clinical signs and symptoms, histopathological distribution, treatment methods, and complications. A descriptive analysis of the study variables was performed using a chi-square test. Results: Among the 164 patients, there were more male than female patients (male-female ratio: 1.7:1). The most predominant ages were the 20s and 40s. Among the classes of pathological cysts, radicular cysts and dentigerous cysts were the most common, with incidences of 56.0% and 35.1%. Thirty-six percent of the patients had no symptoms; and of those who had symptoms, the main signs and symptoms were swelling (24.4%) and pain (17.1%). The most frequent management method was the combination operation, such as enucleation with or without extraction and apicoectomy of the causative teeth. Of the 164 patients, 13 had complications; and one patient who had been treated with enucleation with apicoectomy had a recurrent cyst. Conclusion: Using a chi-square test, no significant differences in prevalence were observed in relation to gender according to age. Comparative analysis of radicular and dentigerous cysts showed a significant difference in their prevalence according to their anatomical location, however, no significant differences in were observed in their incidence rates according to age.
Kalman-Filter Based Static Load Modeling of Real Power System Using K-EMS Data
Lee, Soo-Hyoung,Son, Seo-Eun,Lee, Sung-Moo,Cho, Jong-Man,Song, Kyung-Bin,Park, Jung-Wook The Korean Institute of Electrical Engineers 2012 Journal of Electrical Engineering & Technology Vol.7 No.3
So far, the importance for an accurate load model has been constantly raised and its necessity would be further more emphasized. Currently used load model for analysis of power system in Korea was developed 10 years ago, which is aggregated by applying the statistically estimated load compositions to load models based on individual appliances. As modern appliances have diversified and rapidly changed, the existing load model is no longer compatible with current loads in the Korean power system. Therefore, a measurement based load model is more suitable for modern power system analysis because it can accurately include the load characteristics by directly measuring target load. This paper proposes a ZIP model employing a Kalman-filter as the estimation algorithm for the model parameters. The Kamlan-filter based parameter identification offers an advantage of fast parameter determination by removing iterative calculation. To verify the proposed load model, the four-second-interval real data from the Korea Energy Management System (K-EMS) is used.
Effects of Seeding Dates on Yield and Feed Value of Italian Ryegrass in Paddy Field Cultivation
Lee, Sang Moo The Korean Society of Grassland and Forage Science 2013 한국초지조사료학회지 Vol.33 No.3
This study was carried out to investigate the influence of the seeding dates on the yield and feed value in cultivating Italian rye grass on paddy soil. The field experiment was designed in a randomized block design of 3 repetitions with seeding dates of Oct. 19 (T1), Oct. 26 (T2), Nov. 2 (T3), Nov. 9 (T4), and Nov. 16 (T5) treatments. Plant length, fresh yield, dry matter yield and TDN yield were increased with early seeding dates (p<0.05). Crude protein, Crude fat and crude ash were increased with early seeding dates (p<0.05). On the other hand, NDF, ADF and Crude fiber were decreased with early seeding dates (p<0.05). Total mineral contents were higher in the order of T4 > T3 > T5 > T1 > T2 (p<0.05). The total composition amino acid content was decreased significantly (p<0.05) as the seeding dates delayed. Total free sugar content was highest in T1, whereas the lowest in T5 treatment (p<0.05). Nutrition yields (crude protein, crude fat, amino acid and free sugar) were increased significantly with early seeding dates (p<0.05). The above result indicated that it is favorable to seed soon after rice harvest to increase dry matter yield and nutrition yield of Italian ryegrass in the midlands.