• The Korean Journal of Zoology
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• v.7 no.2
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• pp.13-18
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• 1964

The chromosomes of thirteen wild forms of Drosophila obtained from Kwangnung in Kyunggi Province, Korea were investigated with the ganglion cells of both male and female larvae using the aceto-lactic orcein squashed method. The male chromosome patterns of the species observed in the present study are summarized as follows:

• Proceedings of the KSEG Conference
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• 2004.03a
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• pp.24001-24056
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• 2004

암반 기초에서 발생 가능한 파괴형태로는 $\circled1$전단파괴(Shear failure) $\circled2$관입파괴(punch failure) $\circled3$붕락(Collapse) $\circled4$균열파괴 (cracking) $\circled5$분쇄상파괴 (crushing) $\circled6$쐐기상파괴 (wedging)를 들 수 있다. 그림 2.4-1에서 (a)는 연암층 내에서의 전형적인 전단파괴를 나타내고, (b)는 소성암반 상부에 강성암반이 놓였을 때의 전단파괴를 보여준다. (c)는 2층으로 구성된 지반에서의 전단파괴 양상이며, (d)는 편심하중이 작용할 때의 전단파괴이다. (e)는 사면 상에서의 활동에 의한 파괴유형이다. (f)는 절리가 발달한 풍화된 암반내로 진행되는 관입파괴를 보여주고 있다. (e)는 연암지반 내부로 강성암반이 관입되어 파괴된 모습이다. (h)는 풍화된 화강암에서의 관입파괴 유형이다. (i)는 석회암층 내부의 지하공동에 의한 붕락현상을 보여주고 있으며, (j)는 지하수의 유동에 의해 형성된 공동으로 인한 붕락파괴를 나타낸다. (k)는 균열파괴, (l)은 분쇄상 파괴, (m) 쐐기상 파괴, (n)은 단층선을 따른 파괴 유형이다. (중략)

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.87-87
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• 2018

매실나무겨우살이 막걸리의 생리적 효능을 검정하여 의약 화장품의 소재화 가능성을 검토할 목적으로 발효기간과 겨우살이 함량에 따른 총 폴리페놀, 플라보노이드 함량, DPPH free radical 소거능을 측정하였고, tyrosinase 저해활성은 5분 간격으로 65분간 측정하였다. 막걸리는 백미와 기장을 7:3의 비율로, 겨우살이의 함량을 0%, 5%, 10%로 달리하여 10일 간격으로 최대 30일까지 Shaking incubator($30{\sim}35^{\circ}C$, 100 rpm)에서 발효하였고, 발효가 끝난 막걸리는 80 mesh 망으로 여과하였다. 총 폴리페놀 함량은 10일에 최대치를 나타내었고, 0%는 $633.53{\mu}g/ml$, 5%는 $759.67{\mu}g/ml$, 10%는 $752.2{\mu}g/ml$을 나타내었다. 기간이 경과함에 따라 감소하는 경향이었으며 30일에 0%는 $507.57{\mu}g/ml$, 5%는 $570.13{\mu}g/ml$, 10%는 $551{\mu}g/ml$를 함유하고 있는 것으로 나타났다. 총 플라보노이드 함량 또한 10일에 최대치를 나타내었고, 0%는 $16.18{\mu}g/ml$, 5%는 $63.87{\mu}g/ml$, 10%는 $62.99{\mu}g/ml$였고, 기간이 경과함에 따라 감소하는 경향성을 나타내어 30일에 0%는 $0.59{\mu}g/ml$, 5%는 $10.98{\mu}g/ml$, 10%는 $1.18{\mu}g/ml$를 함유하였다. DPPH free radical 소거능은 0%의 경우 10일에 72.34%로 최대치가 나타났고, 30일에 58.61%로 가장 낮은 소거능을 보여주어 기간이 경과함에 따라 감소하는 경향성을 보여주었다. 하지만, 겨우살이 첨가군인 5%(10일:91.13%, 20일:91.09%)와 10%(10일:91%, 20일:90.8%)는 비교적 차이가 없었고, 발효기간이 30일이 경과한 후 5%는 93.46%, 10%는 92.3%로 최대값을 보여주었다. Tyrosinase 저해활성은 DPPH free radical 소거능이 가장 좋은 30일 발효 막걸리를 측정하였다. 모든 겨우살이 첨가군에서 5분이 경과하였을 때, 0%는 82.68%, 5%는 69.29%, 10%는 79.53%의 저해활성을 나타내었으며, 시간에 유의적으로 저해활성이 감소하였다. 본 연구 결과에 따르면, 겨우살이 막걸리의 총 폴리페놀과 플라보노이드 함량은 기간이 경과함에 따라 감소함에도 불구하고, DPPH free radical 소거능은 증가함을 알 수 있었다. Tyrosinase 저해활성은 5% 첨가 막걸리에서 가장 낮았으며, 겨우살이를 첨가하지 않은 0%에서 가장 저해활성이 높고 오랜시간 유지되는 것을 확인할 수 있었다.

• Journal of Korean Society of Forest Science
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• v.54 no.1
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• pp.41-48
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• 1981

The income and price elasticities of the timber demand for the 27 years (1953~79) in Korea were analyzed by the 3 economic growth stages - in 1953~61, in 1962~71, in 1972~79-. The results obtained are as follows : 1. In 1953~79, the income and price elasticities of the total timber demand were respectively 1.87 and -0.47 ; those of the domestic timber demand were respectively 0.09 and -0.30 ; those of the foreign timber demand were respectively 2.50 and -0.11. 2. In 1953~61, the income and price elasticities of the total timber demand were respectively 2.11 and -0.86 ; those of the domestic timber demand were respectively -2.94 and -0.57 ; those of the foreign timber demand were respectively 1.20 and 0.43. 3. In 1962~71, the income and price elasticities of the total timber demand were respectively 2.89 and -0.20 ; those of the domestic timber demand were respectively 1.38 and -0.25 ; those of the foreign timber demand were respectively 3.54 and -0.42. 4. In 1972~79, the income and price elasticities of the total timber demand were respectively 1.07 and 0.17 ; those of the domestic timber demand were respectively 1.12 and 0.12 ; those of the foreign timber demand were respectively 1.22 and 0.17.

• Korean Journal of Agricultural Science
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• v.19 no.1
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• pp.40-50
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• 1992

This experiment was carried out to stimulate lactic starter culture for yoghurt manufacturing. A each of 1.5% of Bios 2000, CR starter medium, and Yeast extract were added to bulk medium, acidity, pH and changes in the number of lactic acid bacteria were investigated at, intervals of two hours for Lactobacillus bulgaricus and four hours for Streptococus thermophilus and Lactobacillus casei. The results obtained were summarized as follows. 1. The acidity of control arrived at 0.99% after 16 hours of incubation during the incubation of Lactobacillus bulgaricus. Whereas that of CR starter medium reached 1.00% at 12 hours of incubation. Yeast extract, 1.12% at 12 hours, and Bios 2000 reached 0.97% at 10 hours respectively, Thus, Bios 2000 showed the fastest rate of acid production. 2. When the acidity of experiment medium peaked on optimum levels. pH of control was 4.03 in 16 hours of incubation during the incubation of Lactobacillus bulgaricus. Whereas that of Bios 2000 reached 4.10 of Yeast extract reached 3.97 at 12 hours, and of CR starter medium reached 4.05 at 12 hours. 3. Lactic acid bacterial counts were $3.1{\times}10^{10}/ml$ after 16 hours of incubation during the incubation of lactobacillus bulgaricus, Whereas those of Bios 2000 reached $2.1{\times}10^{10}/ml$ at 10 hours, with the fastest stimulation of growth, The counts in CR starter medium were at $2.9{\times}10^{10}/ml$ at 12 hours, and Yeast extract were $3.8{\times}10^{10}/ml$ at 12 hours. 4. The acidity of control, CR starter medium, and Yeast extract reached 0.92% at 44 hours, and 0.96% at 32 hours, and 0.90% at 32 hours respectively, Also, that of Bios 2,000 reached 0.97% at 32 hours, which exhibited the highest, among the treatments. 5. The pH of control was 4.27 at 44 hours. that of CR starter medium was 4.33 at 40 hours and that of Yeast extract was 4.25 at 32 hours during the incubation in Streptococcus thermophilus. Besides, pH of Bios 2000 is lowest as 4.18 at 32 hours. 6. Lactic acid bacterial counts in control, CR starter medium, and Yeast extract during the incubation of Streptococcus thermophilus were $9.8{\times}10^{9}/ml$ at 44 hours,$9.5{\times}10^{8}/ml$ at 40 hours, and $9.6{\times}10^{8}/ml$ at 32 hours. And, the highest number was $2.0{\times}10^{9}/ml$ for Bios 2000 at 32 hours. 7. The acidity of control during the incubation of Lactobacillus casei reached 0.92% at 40 hours, and those of CR starter medium and Yeast extract were 0.95% at 40 hours, and 1.01% at 36 hours respectively. Also, Bios 2000 had the highest acidity as 0.94% at 32 hours. 8. The pH of control, CR starter medium and Yeast extract during the incubation Lactobacillus casei was 4.27 at 40 hours. 4.21 at 40 hours, and 4.15 at 36 hours respectively. Also, Bios 2000 showed the lowest pH, as 4.23, at 32 hours. 9. Lactic acid bacterial counts in control, CR starter medium and Yeast extract during the incubation of Lactobacillus casei were $9.4{\times}10^{7}/ml$ at 40 hours, $1.1{\times}10^{8}/ml$ at 40 hours, and $5.0{\times}10^{8}/ml$ at 36 hours respectively. And, the progress of 32 hours showed the highest number of lactic acid bacteria as$6.4{\times}10^{8}/ml$ in Bios 2000.

• Journal of Korean Ophthalmic Optics Society
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• v.7 no.1
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• pp.15-20
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• 2002

The Hydroxyethyl methacrylate(HEMA) was developped in 1960's and later the use of contact lenses increased. At present more and more people use RGP contact lenses. Due to the wide range of optical corrections available and due to their high oxygen transmission Japanese and Korean people like them. Nevertheless one of nine CL users(beginners) stopped wearing the CL within the first year. We conducted a survey to evaluate the level of patient compliance in lens care and maintenance and to assess practitioner knowledge of contact lens information. Generally 6% of contact lens wearers drop out per year. The aim of this research was to find out what opticians can do to reduce the drop-out rate by getting information on handling, on general data of the patient and on optical prescription. Lens wearer were asked to complete a 10 question survey that focused on lens care-wear modality, lens replacement, storage, symptoms and case disinfection. There were total 180 participants in the study. Most of contact lens wearers have an inadequate understanding of contact lens care system. Therefore, it is important that contact lens specialists place more emphasis on practitioner education about general contact lens fields and reinforce patient education during the dispensing visit.

• Korean Journal of Poultry Science
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• v.4 no.1
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• pp.66-74
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• 1977

닭의 혈액상에 관한 발표는 많으나 아직 우리나라에서의 보고는 거의 없다. 이에 산난능력이 우수한 닭과 병계에 대한 앞으로의 혈액학적 연구를 위한 기초적자료를 얻고저 임상적으로 건강한 소위 한국 재내종(LCH)과 백색레그혼 (WLH)암탉의 정상 혈액학치 즉 적혈구, 백혈구, 혈색소, 헤마토크리프. 평균적혈구 용적, 평균 적혈구 혈색소량. 평균 적혈구 혈색소 농도 등을 조사하였다. 1 R.B.C.는 L.C.H.에서 3.18$\pm$0.10million per c$\mu$. mm였으며 W.L.H.는 3.23$\pm$0.05였다. 2. W.B.C.는 L.C.H에서 42.17$\pm$3.35, thousand per. c$\mu$mm였으며 W.L.H.는 35.64$\pm$2.89였다. 3. Hemoglobin치는 L.C.H.에서 11.24$\pm$0.30gm per 100$m\ell$였으며 WL.H.는 38.40$\pm$0.75였다. 4. Hematocrit치는 L.C.H.에서 34.00$\pm$0,98 percent였으며, W.L.H.는 33.40$\pm$0.75였다. 5. M.C.V.는 L.C.H에서 103.66$\pm$1.22 c$\mu$ 였으며, W.L.H.는 103.32$\pm$1.28이였다. 6. M.C.H,는 C.L.H.에서 34.19$\pm$0.41 $\mu$ $\mu\textrm{g}$9였으며. W.L.H,는 34.37$\pm$0.31이었다. 7. M.C.H.C는 L.C.H.에서 33.09$\pm$0.22 percent였으며, W.L.H.는 33.25$\pm$0.36 0.36이었다. (중략)

• Proceedings of the Korean Journal of Food and Nutrition Conference
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• 2004.07a
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• pp.52-52
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• 2004

중ㆍ고등학생의 점심식사가 학교급식의 형태로 점차 전환되고 있는 실정에서 수도권에 거주하는 중ㆍ고등학생을 대상으로 점심식사 유형에 따른 만족도를 조사하여 학생들의 만족도를 증가시킬 수 있는 점심식사를 제공하는 방안을 모색하고자 하였다. 수도권 거주 중ㆍ고등학생의 경우 응답자의 54.2％가 학교 급식을 하였으며, 37.4％가 도시락을 싸오고, 3.7％는 도시락 전문점, 1.6％는 학교 식당, 1.1％는 학교 밖 식당을 이용하였으며, 1.1％는 기타, 1.1％는 먹지 않는다고 조사되었다. (중략)

• Korean Journal of Weed Science
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• v.9 no.3
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• pp.221-229
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• 1989

This study is conducted to evaluate the effect of KIM-112 (Ca-3, 5-diode-4-propyonly-cyclohexane-1-carboxylate) application at 13, 8 and 3 days before heading for the possibility of lodging prevention, growing pattern of several organisms, growth and yield in paddy rice. KIM-112 was the most effective in reducing elongation of the third internode when it was applied at 13 days before heading(13DBH) and the second internode when it was applied at 8DBH and 3. KIM-112 gradually inhibited internode elongation of rice with increase in dosage starting from 1.0ga.i./10a. The culm length shortened by 7-17% at 3DBH. The maximum distribution of leaf blade at canopy structure was positioned higher on KIM-112 application than on untreated. Lodging index decreased by 8-47% on KIM-112 application and field lodging degree(0-5) was 5 at untreated but KIM-112 application was only 1.3-2.0 of 3 DBH and was little lodging of 8-13 DBH. Ripened grain ratio of KIM-112 application were higher than those of untreated. Yield increased by 27-37% at KIM-112 application.

• Journal of the Korean Chemical Society
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• v.12 no.4
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• pp.139-141
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• 1968

The extraction curve of metal ions with Amberite LAl-chloroform has been found to be more steeper than with Amberite LAl-xylene or hexane, and the extraction ratio of Zn (II) in 2M HCl solution is 98%. The extraction ratio of As (III) in 9~11M HCl soln., Sb (III) in 2~4M HCl soln., and Fe (III) in 6~10M HCl soln. are 100%. The separated elements from Bi metal were determined by colorimetry, Zn (III) with dithizone, As (III) with Gutzeit method, Sb (III) with brilliant green and Fe (III) with thiocyanate.