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돼지의 離乳後 形質에 미치는 品種性 및 環境要因의 效果
鄭興又,朴英一,徐康錫 서울대학교농과대학농업개발연구소 1989 서울대농학연구지 Vol.14 No.1
This study was conducted to investigate the effect of breed, sex, year of birth, month of birth, litter size and parity of sow on certain postweaning traits in swine. The data for this study were obtained from 5,386 heads of Duroc, Landrace and Yorkshire boars and gilts tested at a swine breeding farm in Icheon, Kyunggi-Do from August, 1982 to August, 1987. The results obtained in this study are as follow: 1. The least-squares overall means of the traits studied were 0.777±0.002㎏ for average daily gain, 158.7±0.28 days for age at 90㎏, 1.833±0.008㎝ for backfat thickness, 112.2±0.13㎝ for body length and 63.7±0.05㎝ for wither's height, respectively. 2. Among the three breeds compared, the Duroc had the highest average daily gain and reached 90㎏ at an earliest age. The Landrace had the thinnest backfat and longest body length. In wither's height the Duroc was the highest. 3. Males had higher average daily gain, reached 90㎏ at an earlier, age, had thinner backfat, longer body length and higher wither's height than females. 4. Year of birth and month of birth had significant effects on all of the postweaning traits studied. The pigs born in June, July and August had comparatively higher average daily gain and earlier age at 90㎏ than those born in other months. The pigs born in October had the thinnest backfat. 5. the effect of litter size was significant for age at 90㎏ and backfat thickness, but was not significant for average daily gain, body length and wither's hight. The pigs in litter sizes of 5 to 7 reached 90㎏ at an earliest age, and those in litter size of 12 or more reached 90㎏ at a latest age. Backfat was thinnest in the litter size of 4 or less and was thickest in the litter size of 12 or more. 6. The pigs in 2nd 3rd parities had the highest average daily gain and reached 90㎏ at an earliest age, and those in 5th parity was the most inferior in the two traits. Backfat was thinnest in the 1st parity and was thickest in the 5th parity.
( Seo Dong Ho ),( Jong Hyun Jung ),( Hyun Chang Choi ),( Hyun Kuk Cho ),( Hee Hang Kim ),( Suk Jin Ha ),( Sang Ho Yoo ),( Jae Ho Cha ),( Cheon Seok Park ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.9
A gene (acas) designated as α-amylase was cloned from Arthrobacter chlorophenolicus A6. The multiple amino acid sequence analysis and functional expression of acas revealed that this gene really encoded an amylosucrase (ASase) instead of α-amylase. In fact, the recombinant enzyme exhibited typical ASase activity by showing both sucrose hydrolysis and glucosyltransferase activities. The purified enzyme has a molecular mass of 72 kDa and exhibits optimal hydrolysis activity at 45oC and a pH of 8.0. The analysis of the oligomeric state of ACAS with gel permeation chromatography revealed that the ACAS existed as a monomer.
Basic requirements for visual evoked potentials
Seok, Hung Youl,Lee, Eun-Mi,Park, Kee Duk,Seo, Dae-Won,Korean Society of Clinical Neurophysiology Education Committee The Korean Society for Clinical Neurophysiology 2018 Annals of Clinical Neurophysiology Vol.20 No.1
Visual evoked potentials (VEPs) are frequently used to assess the anterior and posterior visual pathways. In particular, the use of VEPs have been increasing in various fields such as evaluation of the optic nerves in patients with multiple sclerosis. The performance of VEP test can be affected by various factors such as stimulus type and subject condition, and its interpretation is also difficult. However, there have been no guidelines for performing and interpreting VEPs in Korea. Therefore, we aimed to provide comprehensive information regarding basic requirement and interpretation for VEPs.
Basic requirements for visual evoked potentials
Hung Youl Seok,이은미,박기덕,Dae-Won Seo 대한임상신경생리학회 2018 Annals of Clinical Neurophysiology Vol.20 No.1
Visual evoked potentials (VEPs) are frequently used to assess the anterior and posterior visual pathways. In particular, the use of VEPs have been increasing in various fields such as evaluation of the optic nerves in patients with multiple sclerosis. The performance of VEP test can be affected by various factors such as stimulus type and subject condition, and its interpretation is also difficult. However, there have been no guidelines for performing and interpreting VEPs in Korea. Therefore, we aimed to provide comprehensive information regarding basic requirement and interpretation for VEPs.
Hang Seok Choi,Won-Seok Yang,Ji Eun Lee,Yong Chil Seo,Jang-Soo Lee,Heung-Min Yoo,Jun-Kyung Park,Se-Won Park,Ki-Bae Lee,Woo-Hyun Kim 한국화학공학회 2016 Korean Journal of Chemical Engineering Vol.33 No.4
The physicochemical characteristics of automobile shredder residue (ASR) and its melting slag were investigated: In particular, the applicability of ASR as a reducing agent to the black copper recovery process. ASR is classified into three types after the shredding process: heavy fluff, light fluff and glass and soil. In this study, the portions of heavy fluff, light fluff and glass and soil in the ASR were 89.2 wt%, 8.1 wt% and 2.7wt%, respectively. Physicochemical analysis revealed that moisture and fixed carbon content were low in heavy and light fluffs, and combustible content was the highest. The higher heating value (HHV) of light fluff was 6,607 kcal/kg, and the HHV of heavy fluff was 5,312 kcal/kg. To sum up, the separation of black copper and discard slag mostly seems to be affected by the melting temperature. Therefore, if basicity and melting temperature are properly controlled, the ASR can be used as a reducing agent in the smelting process of black copper recovery. Moreover, the possibility of black copper recovery from ASR and heavy metal poisoning is evaluated.