遮光이 두 大豆品種의 光合成 및 收量에 미치는 影響

柳點鎬,崔善英,金濟桓,李康壽 全北大學校 1993 論文集 Vol.35 No.-

In order to find out the influence of shading degree on the growth, pod setting, protein contents, RuBPCase activity, photosynthesis and yield in soybean plants, two soybean varieties, Hill and Etaka were cultivated under the 0%(full sun light), 20%, 65% and 90% shading conditions. Protein contents, RuBPCase activity and photosynthesis of leaves in Hill were decreased linearly with the higher shading, but those in Etaka were increased up to 20% shading, and then decreased more rapidly than Hill when the shading was above 65%. Pod sets were decreased with the higher shading degree, and those of the degree were severe in upper nodes. The stem heights were increased in accordance with the shading up to 65%, but stem diameter and No. of branches were decreased linearly with the higher shading degree. The yield of Hill was decreased linearly with the higher shading degree, but that of Etaka were increased up to 20% shading, and decreased inure severely than Hill when the shading was above 65%. From the above results : Etaka is more suitable than Hill to weak shading which occurred in the case of intercropping, companion cropping and alternating cropping, and the shading degree must not go over above 20%.

미용업 종사자들의 근골격계증상유병률 및 관련요인

유선미,임진주,강명근,박종 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.1

Background and Objectives: This study identified beauty designers and skin specialists' complaints of subjective symptoms in bones and sinews over necks, shoulders, arms, fingers, knees, waists, and legs, and the whole area in which six physical areas are combined, and related factors, It was intended to prevent disorder in bones and sinews of beauty designers and contribute to health promotion. Methods: For the purpose, it targeted 203 beauty designers who work at beauty and skin shops in Gwangju, and they were interviewed using questionnaire with short answer questions. Results: When complaints of subjective symptoms(Pain, anesthesia, and stiffness) over bones and sinews were examined, 12.3% complainted pain in neck, 30.5% in shoulders, 11.3% in arms, 11.3% in back, 15.8% in fingers, and 12.3% in knees. And the prevalence rate of the whole area was 44.9%. As a result of multivariate logistic regression analysis, it was found that the subjective symptom complaint odds ratio of the group who graduated from universities had 0.39 times lower (95% confidence interval 0.20-0.73) than that of the group who graduated from high schools or below. For those who had smoking exerience, It was 5.23 times higher than that of non-smokers. Depending on occupational stress score, it increased 1.05 (95% confidence interval 1.01-27.15) times. Conclusion: It was demonstrated that subjective symptoms complaints over bones and sinews of beauty designers were greatly affected by health behaviors and occupational characteristics such as smoking and stress, therefore, it was thought that to reduce the complaints, excessive working hours should be prevented and a certain period of rest should be assured.

大豆에 있어서 生育初基의 斷水處理가 還元糖 및 α-amylase에 미치는 影響

柳點鎬,崔善英,李康壽 全北大學校 1988 論文集 Vol.30 No.-

In order to obtain the basic information for clarifying the mechanism of water stress, effects of water removal (15 days after emergence) on dry weight, chlorophyll and reducing sugar content, α-amylase activity and isozyme pattern were investigated in the early growth stage of soybean plant. The results are as follows. 1. Dry weight of shoot was increased in both the control and the treatment, but the degree of increase was remarkably lower in the treatment than that in the control. After 9 days of the treatment, it was decreased about 42% compared to the control. 2. Water content(%) and chlorophyll content in the leaves showed nearly unchanged in the control, but remarkable decrease in the treatment. After 9 days of the treatment, they came to 60% and to 4.5mg.g DW and decreased 26% and 42%, respectively, compared to the control. 3. Reducing sugar content and α-amylase activity in the leaves remained at almost constant level in the control, but showed almost linear increase in the treatment. After 9 days of the treatment, they came to 26mg/g DW and to 20 units, and reached about 2 and 1.6 times, respectively, compared to the control. 4. α-amylase isozymes showed only b (light stained) and c (dark stained) isozymes in the control and remained in color intensity during the period of investigation, while, in the treatment, a new a band was observed 3 days after the treatment, and a and b isozmes also became dark stained condition from 7 days after the treatment.

폐암세포에 대한 附子 추출물의 독성 효과

권강범,김은경,문형철,송용선,류도곤 한국전통의학연구소 2006 한국전통의학지 Vol.15 No.1

The aim of this study was to investigate the cytotoxic effect and its mechanism on Radix Aconiti(RA) extract in lung cancer cell lines. RA extract treatment decreased the cell viability in a dose-dependent fashions in lung cancer cells including A549, H460, H23 and H157 cells. Many investigators reported that A549 and H460 cells expressed wild-type p53, but H23 and H157 cells preserved mutated p53. After treatment with RA extract in A549 and H460 cells, we measured the expression of p53 protein levels using Western blot, analysis. In both cells treated with RA extracts, p53 protein expressions were increased in a dose-dependent manner. In our experiments, RA extracts also have cytotoxic effects in H23 and H157, which have mutated p53. Treatment with RA extract decreased bcl-2 protein expressions in both cells. These results suggest that RA extracts have cytotoxic effects via p53 expression increase and bcl-2 inhibitable pathways in A549, H460 cells and H23, H157 cells, respectively.

Overlay 기반의 WiBro와 WLAN 이종망 연동을 위한 Vertical 핸드오버 구현 및 성능 측정에 관한 연구

이재호,류형근,강선무,이재용,김승천 한국정보사회진흥원 2007 정보화정책 Vol.14 No.3

유비쿼터스 사회를 위한 미래 네트워크는 다양한 이종 무선망이 혼합된 형태가 될 것으로 예상되고 있다. 본 논문에서는 개별 무선망의 특징을 최대한 활용하여 1,270,000㎡ 면적의 KAIST(Korea Advanced Institute of Science and Technology) 대학교 캠퍼스에 IEEE 802.16e/WiBro와 IEEE 802.11/WLAN 를 복합적으로 설치하여 건물외부에서는 WiBro, 건물내부에서는 WLAN으로 자동 스위칭 되는 Vertical 핸드오버 System을 구축하고 이동 성능을 분석하였다. 이종망 통합 과정에서 제조사 및 통신사업자의 사정으로 인하여 Mobile IP를 지원하지 않는 라우터들이 존재하였고, 특히 현재 WiBro에 사용되는 ACR(Access Control Router)은 Mobile IP를 지원하지 않기 때문에 이를 해결하기 위하여 Overlay 기반의 Mobility 기법을 적용하였다. 본 연구에서는 실제로 대규모 통신망을 구현하고, 이에 대한 성능시험을 시행한 후 handover delay 시간 분석을 통한 현장 적용 가능성 및 개선 필요사항을 도출하였다. 그 결과 이종망간 핸드오버 시간은 평균 2.58초로써 일반 데이터 서비스는 이종망간 연속성이 보장됨을 확인하였고, 음성∙영상과 같은 실시간 서비스는 중간에 지연시간이 발생하나 응용서비스 세션 자체는 유지됨을 확인하였다. The future network is forecast with the fact that the form where the various heterogeneous wireless networks. In this paper we build both IEEE 802.16e/WiBro and IEEE 802.11/WLAN network on the KAIST(Korea Advanced Institute of Science and Technology) campus(1,270,000m2) as well as established the vertical handover system which supported WLAN in the building and WiBro outside the building. A Mobile IP is considered for the efficient vertical mobility function in IEEE 802.16/WiBro and IEEE 802.11/WLAN environment. However, during the deployment of WiBro, only some of the ACRs(Access Control Router) can support the Mobile IP function. Therefore, WiBro network can not support the mobility function for the mobile node. In this paper, we implement an overlay-based Mobile IP function and measure the performance through a field trial. Moreover, we evaluate the possibility of commercial deployment and suggest areas that need to be improved. The average handover time between WiBro and WLAN was 2.58 seconds. As a result, the user application session maintained but real time applications were delayed during the handover time.

Secretion Effect of Estrogen of Different Growth Stages of Silkworm (Bombyx mori L.)

( Kang Sun Ryu ),( Heui Sam Lee ),( Kee Young Kim ),( Mi Ja Kim ),( Hong Guen Oh ),( Pil Don Kang ) 한국잠사학회 2011 International Journal of Industrial Entomology Vol.22 No.1

The average life expectancy has continuously increased with the development of medical industry. As women get older, they experience the deficit of estrogen caused by decreased function of ovarian. Specifically, they suffer from temporary fever because of unstable vasomotion and, in the long term experience, degeneration of urogenital organs, tooth loss, arteriosclerosis, demantia, snores and so on. Because of these symptoms the estrogen medical supply is getting required. Along with this, many studies have conducted to find out substitutional medicals without any side effects. This research was carried out to find out such substitutable materials. For the purpose of study, we examined the change of estrogen using the rats fed with the pupa powder immediately before the eclosion, eclosed adult, the pupa extract immediately before the eclosion, and the silkworm powder prepared at 3rd day of 5th instar. The result showed no significant chance in weight, feeding and water intake quantity among variables. However, the estrogen hormone secretion effects was very high at 73 pg/ml in the rats fed with the freeze-dried powder of the Yeonnokjam male pupa prepared immediately before the eclosion, compared with the control at 59 pg/ml. The next was Yangwonjam male adult at 71 pg/ml.

Comparison on Antioxidative Capacity of Various Silkworm Strains

Kang Sun Ryu,Pil Don Kang,I Yeon Jung,Kee Young Kim,Bong Hee Sohn,Heui Sam Lee,Hyun Bok Kim,Kwang Gil Lee 한국잠사학회 2009 International Journal of Industrial Entomology Vol.18 No.2

To increase utilities as functional materials, 173 strains of silkworm genetic resources in the form of silkworm powder were evaluated for antioxidative capacity, with minilum L-100 device and ARAW-KIT (anti-radical ability of water soluble substance). Silkworm powder was prepared with freezing method from silkworms at 5th instar 3rd day larvae. All strains of silkworm powder were prepared with 80% methanol extraction. The data of pupation rate, longevity of silkmoth with origin and voltinism were used for data base of silkworm genetic resources. The weight of a silkworm larva with freezing method at 5th instar 3rd day was measured. The average of antioxidative capacity of 173 silkworm strains was 429.68 nmol. The analysis of correlation among variables was significant, showing negative correlation of the antioxidative capacity with longevity of silk moth and weight of 5th instar silkworm larva. The strains from the tropic, Europe and some other origins were comparatively high. In conclusion, short longevity and low weight of 5th instar silkworm larvae showed comparatively effective antioxidative capacity.

Effects of Silkworm Pupae on Bone Mineral Density in Ovariectomized Rat Model of Osteoporesis

( Kang Sun Ryu ),( Heui Sam Lee ),( Kee Young Kim ),( Mi Ja Kim ),( Pil Don Kang ) 한국잠사학회 2012 International Journal of Industrial Entomology Vol.24 No.2

Osteoporosis is characterized by the reduced density of mineralized bone matrix. The loss of bone has been attributed to an imbalance between bone formation and bone resorption. The silkmoth is one of the famous traditional tonic medicines. Silkworm pupa was evaluated for its antiosteoporotic activity in an ovariectomized rat model of osteoporosis. The rats were ovariectomized at 6weeks of age and divided into 7 groups. All the groups were fed without calcium diet. The OVX rats were treated with water and silkworm powder for 6 weeks. In OVX rats, the body weight, feeding and water intake quantity did not show a significant change, but the silkworm pupa powder immediately before the eclosion of Yeonrokjam was significantly increased the bone mineral density in the femoral bone. The silkworm pupa powder increased the bone with increasing calcium in serum. These results also showed its protective action through promotion of bone formation. The silkworm pupa powder has a definite antiosteoporotic effect; similar to estrogen, it is sepecially effective for the prevention of bone fracture induced by estrogen deficiency. The silkworm pupa powder is a promising anti-osteoporotic agent that can prevent bone fractures in osteoporotic patients. The silkworm pupa powder dose not show serious side effects because natural herbal medicine origin.

Secretion Effect of Estrogen of Different Growth Stages of Silkworm (Bombyx mori L.)

Ryu, Kang-Sun,Lee, Heui-Sam,Kim, Kee-Young,Kim, Mi-Ja,Oh, Hong-Guen,Kang, Pil-Don Korean Society of Sericultural Science 2011 International Journal of Industrial Entomology Vol.22 No.1

The average life expectancy has continuously increased with the development of medical industry. As women get older, they experience the deficit of estrogen caused by decreased function of ovarian. Specifically, they suffer from temporary fever because of unstable vasomotion and, in the long term experience, degeneration of urogenital organs, tooth loss, arteriosclerosis, demantia, snores and so on. Because of these symptoms the estrogen medical supply is getting required. Along with this, many studies have conducted to find out substitutional medicals without any side effects. This research was carried out to find out such substitutable materials. For the purpose of study, we examined the change of estrogen using the rats fed with the pupa powder immediately before the eclosion, eclosed adult, the pupa extract immediately before the eclosion, and the silkworm powder prepared at $3^{rd}$ day of $5^{th}$ instar. The result showed no significant chance in weight, feeding and water intake quantity among variables. However, the estrogen hormone secretion effects was very high at 73 pg/ml in the rats fed with the freeze-dried powder of the Yeonnokjam male pupa prepared immediately before the eclosion, compared with the control at 59 pg/ml. The next was Yangwonjam male adult at 71 pg/ml.

Effects of Silkworm Pupae on Bone Mineral Density in Ovariectomized Rat Model of Osteoporesis

Ryu, Kang-Sun,Lee, Heui-Sam,Kim, Kee-Young,Kim, Mi-Ja,Kang, Pil-Don Korean Society of Sericultural Science 2012 International Journal of Industrial Entomology Vol.24 No.2

Osteoporosis is characterized by the reduced density of mineralized bone matrix. The loss of bone has been attributed to an imbalance between bone formation and bone resorption. The silkmoth is one of the famous traditional tonic medicines. Silkworm pupa was evaluated for its antiosteoporotic activity in an ovariectomized rat model of osteoporosis. The rats were ovariectomized at 6weeks of age and divided into 7 groups. All the groups were fed without calcium diet. The OVX rats were treated with water and silkworm powder for 6 weeks. In OVX rats, the body weight, feeding and water intake quantity did not show a significant change, but the silkworm pupa powder immediately before the eclosion of Yeonrokjam was significantly increased the bone mineral density in the femoral bone. The silkworm pupa powder increased the bone with increasing calcium in serum. These results also showed its protective action through promotion of bone formation. The silkworm pupa powder has a definite antiosteoporotic effect; similar to estrogen, it is especially effective for the prevention of bone fracture induced by estrogen deficiency. The silkworm pupa powder is a promising anti-osteoporotic agent that can prevent bone fractures in osteoporotic patients. The silkworm pupa powder does not show serious side effects because natural herbal medicine origin.