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Degumming of Antheraea yamamai silkworm cocoon
Shin, Bong-Seob,Jeon, Jong-Young,Kim, Jong-Ho Korean Society of Sericultural Science 2015 International Journal of Industrial Entomology Vol.31 No.2
Oak silkworm, Antheraea yamamai (A. yamamai), has been used for clothing and surgical suture and considered as biomaterial due to RGD tripeptide. This paper reported the degumming conditions of A. yamamai using sodium oleate, high pressure and temperature, and sodium carbonate. Degumming ratio of A. yamamai cocoon using sodium oleate was less than 10%. High pressure and temperature treatment induced 30% weight loss of A. yamamai cocoon. The concentration, treatment temperature and time using sodium carbonate was examined and revealed the following conditions for degumming; 5% owf, 60 min at 100℃. The degummed solution was confirmed using UV and FT-IR spectrometer. Our results can be used to handle A. yamamai silkworm cocoon for further application including material processing.
Cocoon Characteristics of Antheraea pernyi Silkworm Reared in Korean Oak Field
( Bong Seob Shin ),( Jong Young Jeon ),( Jong Ho Kim ) 한국잠사학회 2012 International Journal of Industrial Entomology Vol.25 No.2
Antheraea pernyi silkworm is a well known wild silkworm to produce a valuable silk fiber. A. pernyi silkworm was reared in Korean oak field and examined the cocoon characteristics, such as cocoon weight, cocoon shell weight, and percentage of cocoon shell weight. Degumming loss was also measured after alkali degumming process. A. pernyi silkworm spins tawny color cocoon in oval shape. Cocoon shell weight of A. pernyi silkworm, 0.78 g, was heavier than that of B. mori silkworm, 0.51 to 0.63 g. Cocoon shell percentage of A. pernyi silkworm, 32.8%, was higher than that of B. mori silkworm, 23.4 to 25.2%. Degumming loss percentage of A. pernyi silkworm, 17.1%, was lower than that of B. mori silkworm, 25.0%. SEM showed that the surface of the cocoon filament was coarse and oriented with longitudinal direction.
Literature review of Limacodidae (Lepidoptera: Zygaenoidea) in Korea
Shin-young Park,Bong-woo Lee,Yang-seob Bae 한국응용곤충학회 2011 한국응용곤충학회 학술대회논문집 Vol.2011 No.05
The family Limacodidae, which is generally known with a Korean common name, ‘Sswaegi’, belongs to the superfamily Zygaenoidea. Most species have strong hair-like bristles, which causes painful skin irritation on outer surface of larval stages. Members of the family are small to medium sized moths and can be defined with the combination of the following characteristics: larvae without crochets, adults with R3, R4 and R5 veins of the forewing stalked and papillae anales disk-shaped. The family contains approximately 1,000 species of 400 genera from the world and a number of species recorded from the tropical regions. In Korea, seven species were studied by Fixen (1887) for the first time. Since then, some fragmentary reports and taxonomic studies were made by several lepidopterists. Although there are 25 species of 19 genera known from Korea, comprehensive study for Korean limacodids has not carried out up to date. As the preliminary step for a revisional study on Korean species of the family, a literature review has been done, and some corrections were made on incorrect scientific names in ‘Checklist of Korean insects (2010)’, which was most recently published.
Cocoon Characteristics of Antheraea pernyi Silkworm Reared in Korean Oak Field
Shin, Bong-Seob,Jeon, Jong-Young,Kim, Jong-Ho Korean Society of Sericultural Science 2012 International Journal of Industrial Entomology Vol.25 No.2
Antheraea pernyi silkworm is a well known wild silkworm to produce a valuable silk fiber. A. pernyi silkworm was reared in Korean oak field and examined the cocoon characteristics, such as cocoon weight, cocoon shell weight, and percentage of cocoon shell weight. Degumming loss was also measured after alkali degumming process. A. pernyi silkworm spins tawny color cocoon in oval shape. Cocoon shell weight of A. pernyi silkworm, 0.78 g, was heavier than that of B. mori silkworm, 0.51 to 0.63 g. Cocoon shell percentage of A. pernyi silkworm, 32.8%, was higher than that of B. mori silkworm, 23.4 to 25.2%. Degumming loss percentage of A. pernyi silkworm, 17.1%, was lower than that of B. mori silkworm, 25.0%. SEM showed that the surface of the cocoon filament was coarse and oriented with longitudinal direction.
Degumming of Antheraea yamamai silkworm cocoon
( Bong Seob Shin ),( Jong Young Jeon ),( Jong Ho Kim ) 한국잠사학회 2015 International Journal of Industrial Entomology Vol.31 No.2
Oak silkworm, Antheraea yamamai (A. yamamai ), has been used for clothing and surgical suture and considered as biomaterial due to RGD tripeptide. This paper reported the degumming conditions of A. yamamai using sodium oleate, high pressure and temperature, and sodium carbonate. Degumming ratio of A. yamamai cocoon using sodium oleate was less than 10%. High pressure and temperature treatment induced 30% weight loss of A. yamamai cocoon. The concentration, treatment temperature and time using sodium carbonate was examined and revealed the following conditions for degumming; 5% owf, 60 min at 100oC. The degummed solution was confirmed using UV and FT-IR spectrometer. Our results can be used to handle A. yamamai silkworm cocoon for further application including material processing.
Operational Concept of the NEXTSat-1 for Science Mission and Space Core Technology Verification
Shin, Goo-Hwan,Chae, Jang-Soo,Lee, Sang-Hyun,Min, Kyung-Wook,Sohn, Jong-Dae,Jeong, Woong-Seob,Moon, Bong-Gon 한국우주과학회 2014 Journal of Astronomy and Space Sciences Vol.31 No.1
The next generation small satellite-1 (NEXTSat-1) program has been kicked off in 2012, and it will be launched in 2016 for the science missions and the verification of space core technologies. The payloads for these science missions are the Instrument for the Study of Space Storms (ISSS) and NIR Imaging Spectrometer for Star formation history (NISS). The ISSS and the NISS have been developed by Korea Advanced Institute of Science and Technology (KAIST) and Korea Astronomy and Space science Institute (KASI) respectively. The ISSS detects plasma densities and particle fluxes of 10 MeV energy range near the Earth and the NISS uses spectrometer. In order to verify the spacecraft core technologies in the space, the total of 7 space core technologies (SCT) will be applied to the NEXTSat-1 for space verification and those are under development. Thus, the operation modes for the ISSS and the NISS for space science missions and 7 SCTs for technology missions are analyzed for the required operation time during the NEXTSat-1’s mission life time of 2 years. In this paper, the operational concept of the NEXTSat-1’s science missions as well as the verification of space core technologies are presented considering constraints of volume, mass, and power after launch.
장봉철(Bong-Chul Jang),신재정(Jae-Jung Shin),김선아(Sun-Ah Kim),조현섭(Hyun-Seob Cho),최용성(Yong-Sung Choi),이창화(Chang-Hwa Lee) 한국중독정신의학회 1998 중독정신의학 Vol.2 No.1
To determine the characteristics of alcohol dependent patients, total 568 psychiatric records of 373 alcohol dependent patients who had been admitted to St. Andrew’s Hospital from 1991 to 1996 were reviewed. And alcohol dependence was rediagnosed according to DSM-Ⅳ criteria. Date from psychiatric records including sex, age, education, occupation, religion, history of familial alcoholism, marital state, attendant, habitat, course of admission, type of discharge, duration of admission, presence of delirium tremens and MMPI scale were obtained. In the demographic findings, 95.2% of alcohol dependent inpatients were male, and mean age on admission of total patients was 43.1±11.1 years. Education background of the reviewed patients was higher than the general population. Among the alcohol dependent patients, 40.5% had no religion, 41.6% were jobless, 76.4% continued marital life and 20.6% had a history of familial alcoholism. Most of patients’ caretakers were family members or partners. 71.9% of the patients came from cities, 37.9% admitted via emergency room and 34.5% discharged agsinst medical advice. The admission rate of alcohol dependent patients increased annually. The monthly admission rate of alcohol dependent patients was the highest in November, and second highest in June. The rate of alcohol withdrawal delirium decreased annually and the mean annual rate was 14.6%. The mean duration of the admission was 44.4±45.0 days, of which 52.1% were less than a month. In MMPI scales, the validity scales showed inverted V shape and clinical scales showed more elevated t-scores of the Pd, Pa, and Ma scale which suggest antisocial, neurotic and psychotic features among alcohol dependent patients.