• Korean Journal of Weed Science
• /
• v.15 no.3
• /
• pp.188-196
• /
• 1995

Blackgrass and water foxtail are troublesome weeds in a cultivation area of cereals. To know whether water foxtail could substitute for blackgrass as a plant material of screening for the discovery and development of new cereal herbicides, they were compared in a greenhouse and a growth chamber with respect to initial growth characteristics and responses to various herbicides. Blackgrass had a higher germination rate at lower temperature and a higher growth rate at higher temperature as compared to water foxtail. In addition, blackgrass was less sensitive to long day than water foxtail. These results suggest that blackgrass grows better in a cultivation area in spring than water foxtail. As compared to water foxtail, blackgrass showed shightly susceptible responses to herbicides when they were applied to soil surface at one day after seeding. However, the responses to the herbicides of blackgrass and water foxtail were similar with a foliar application of the herbicides at 3 or 4 leaf stage of the plant. Since there were no considerable differences in the herbicidal responses of the two plant species, water foxtail could substitute for blackgrass as a plant material for a primary herbicide screening. When water foxtail was used in a post-emergence screening test, seeding amount of 0.1g/$350cm^2$ and postemergence application of herbicides at 3 to 5 leaf stage were found to be appropriate on the view of alleviating screening efforts in a greenhouse.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.31 no.3
• /
• pp.500-505
• /
• 2002

Many studies have shown that hyperglycemia leads to an increase of lipid peroxidation in diabetic patients and animals, reflecting a rise reactive oxygen species production. It is increasingly recognized that brain is another site of diabetic organ damage. Accordingly, this study was to investigate the effect of dandelion on oxygen free radical generating and scavenging system of brain in streptozotocin (STZ)-induced diabetic rats. Male Wistar rats were divided into diabetic (control) and diabetic-dandelion supplemented groups. Dandelion was supplemented for 4 weeks with dandelion leaf and root powder (DLP, DRP) or dandelion leaf and root water extract (DLW, DRW) based on 11.4 g of raw dandelion/kg diet. Diabetes was induced by single injection STZ (55 mg/kg B.W., i.p.)in a citrate buffer. Oxygen free radical generating enzymes, cytochrome P-450, amino-pyrine N-demethylase, aniline hydroxylase and xanthine oxidase, were lowered in dandelion supplemented-groups compared to the control group. Superoxide dismutase, catalase and gluthathione peroxidase activities of brain were also lower in dandelion leaf and root supplemented-group than in the control group, whereas glutathione S-transferase activity and gluthathione content were increased in dandelion supplemented-groups compared to the control group. With regard to the lipid peroxidation products, the malondialdehyde content of brain was lower in dandelion supplemented groups. Therefore, it could be suggested that powder and water extract of dandelion leaf or root are beneficial in preventing diabetic complication from lipid peroxidation and free radical in brain of diabetic rat brain.

• Journal of Korea Technology Innovation Society
• /
• v.18 no.4
• /
• pp.667-692
• /
• 2015

The study examined the Korean medicine industry from the perspective of the innovation system theory of each business, while it concentrated on the conflict between traditional Korean medicine and Western medicine, which have a major influence on the innovation system of Korean medicine industry, rather than the innovation system itself. The Korean healthcare system is a dual system of Western and Korean medicine, yet the definitions of Western medical practices and Korean medical practices are ambiguous. Thus the distinction of dual system depends on judicial precedents, and the innovation of Korean medicine has been inhibited due to the excessive emphasis placed on the Western medical practice in both healthcare system and pharmaceutical system. First of all, the usage of most medical devices derived from the development of modern medical engineering is not permitted in the Korean medicine industry, on the basis that most of the medical devices were originated from the Western medicine field. Secondly, new drugs using natural substances, once approved by the drug administration, cannot be prescribed by the Korean medicine industry although they are developed based on Korean medicine. Thirdly, the major safety issues on herbal medicine are about hazardous materials in medicinal herbs and liver toxicity of prescribed herbal medicine. The problem of hazardous materials can be solved by appropriate quality and safety tests in the cultivation and importation process. Whereas the Korean medicine circles points out that the liver toxicity issue is only a unilateral condemnation by the Western medicine circles.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.18 no.8
• /
• pp.273-284
• /
• 2017

This study performed meta-analysis of published articles to examine the relationship between sarcopenia and smoking. We searched the PubMed, EMBASE, Cochrane library, and RISS database sup to January 2017 using search terms such as sarcopenia AND (smoking OR tobacco OR cigarette). A total of 25 articles were included in the analysis (seven cohort studies and 18 cross-sectional studies). Incidence of sarcopenia in smokers and non-smokers was analyzed by the random effects model. Incidence of sarcopenia was OR 1.49 (95% CI 1.21, 1.84, p<.001, I2 = 88.20%), Asian (OR 1.28, 95% CI 0.91, 1.78, p=0.150, I2=85.32%), and Western (OR 1.65, 95% CI 1.25, 2.17, p<.001, I2=91.08%), Western smokers showed a significantly higher incidence of sarcopenia:males and females with OR 1.25(95% CI 1.11, 1.40, p<.001, 12=87.4%) and 1.80(95% CI 0.98, 3.30, p=.057, 12=89.1 %) respectively. Male smokers showed significantly higher incidence of sarcopenia. Based on the results of the study, smoking in Western males is related to sarcopenia. However, since the criteria for the diagnosis of sarcopenia and the criteria for smoking were different, cumulative individual clinical studies applying uniform assessment for the evaluation of sarcopenia and smoking status are needed in the future.

• Korean Journal of Environmental Biology
• /
• v.41 no.3
• /
• pp.273-282
• /
• 2023

Hypochaeris radicata, native to Europe and Eurasia, is a perennial plant of the Asteraceae family. In Korea, H. radicata was reported in 1992, mainly in Jeju Island, and gradually spreading to the inland. It overwinters in the form of a rosette and blooms yellow flowers from May to June. H. radicata propagates by seeds and rhizomes. The germination temperature of the seed is 15/20℃ (day/night), and the rhizome forms a new plant at a depth of 2-3cm in the soil. The roots of H. radicata secrete allelochemicals that inhibit the development of other plants. Some use it as a salad or forage substitute but to a limited extent. However, extensive research on ampicillin contained in H. radicata has been conducted, and its anticancer and anti-inflammatory effects have been recognized. There are only a few methods to manage H. radicata both culturally and physically. In orchards, soil treatments such as oxyfluorfen and diclobenil, or nonselective foliar treatments such as glufosinate-ammonium and glyphosate are used. Notably, there are no known biological control agents.

• Food Industry And Nutrition
• /
• v.11 no.2
• /
• pp.25-28
• /
• 2006

떡과 한과는 수백 년 전부터 우리 식생활 전반에 걸쳐서 밀접한 관계를 가지고 있다. 슬플 때나, 기쁠 때나, 정을 나눌 때나 언제나 떡과 한과는 우리와 함께 해 왔다. 건강에 대한 관심이 고조되면서 세계의 많은 사람들이 한국음식에 관심을 갖기 시작하였다. 이에 따라 우리의 떡과 한과에 대한 관심도 높아져 신세대와 외국인 등 우리 떡에 대한 새로운 변화를 기대하는 사람들이 매우 급증하는 추세이다. 서양의 피자, 케이크, 빵류가 우리의 생활에 침투하였듯이 우리의 떡과 한과도 좀 더 연구 개발에 힘쓴다면, 서양의 문화에 자연스럽게 침투하여 세계인의 생활 속에 친숙한 음식문화도 자리 잡을 수 있을 것이다.

• Proceedings of the KSLP Conference
• /
• 1997.11a
• /
• pp.254-254
• /
• 1997

서양음악을 전공하는 숙달된 가수들은 공연시 효과적인 소리의 울림현상을 생성하여 노래소리가 잘 전달되는데 이는 노래소리에 대한 음악 음형대의 형성에 기인한다. 그러나 판소리의 일반적인 창법은 발성중 적절한 감정의 삽입과 더불어 아주 깨끗한 소리보다는 적절하게 탁음을 조화시키므로서 우리민족의 정서에 맞는 감정을 전달하는 것으로 판소리 가수만이 가지는 독특한 발성법에 의해 성대의 과다한 접촉 및 진동에 의해 병변이 초래되며 심한 경우 발성기관에 병적인 병변이 발생하여 치료를 요하는 경우도 많다. (중략)

• Journal of Bio-Environment Control
• /
• v.3 no.2
• /
• pp.160-176
• /
• 1994

우리나라 시설원예의 역사가 비교적 짧은 데 비하여 서양의 시설원예는 우리보다 오랜 전통을 가지고 있다. 서양에서 시설원예의 시작은 개인의 취미생활이나 미적 탐구 등에서 출발하였기 때문에 초기에는 식물재배의 한 방편으로 출발했다고 보아야겠다. 그 후 식물에 대해서 보다 심도 있는 연구가 이루어지면서 시설을 이용한 재배가 서서히 시작되었다고 생각된다. 따라서 시설원예의 상업적인 접근은 유럽의 경우에 19세기 초.중반부터 이루어졌는데 이 시기가 근세로 이어지면서 인구의 팽창과 산업의 발전이 급속히 이루어졌던 시기이기 때문이다.(중략)

• The Science & Technology
• /
• v.30 no.10 s.341
• /
• pp.92-94
• /
• 1997

서재필은 분명히 한국이 낳은 최초의 서양 의사다. 1세기 전 미국에 유학하여 처음으로 근대과학을 배운 인물이기 때문에 우리나라 근대과학의 선구자. 서재필은 20세기 조선조때 과거에 급제한 후 스승인 김옥균의 갑신정변에 가담했다가 망명길에 올라 미국 유학을 마치고 귀국하여 1896년 독립신문을 창간했다. 그는 이 독립신문을 통해 최초로 '박테리아'란 말과 함께 근대 의학을 소개한 과학자다.

• TTA Journal
• /
• s.146
• /
• pp.14-15
• /
• 2013

서양에 레오나르도 다빈치의 <모나리자>가 있다면 우리에게는 혜원 신윤복의 <미인도>가 있다. <모나리자>가 야릇한 미소로 보는 사람들의 시선을 사로잡는다면, <미인도>는 단아하고 청순하지만 한편으론 에로틱한 모습으로 보는 이의 마음을 끌어당긴다. 또 네덜란드에 브뤼헐의 풍속화가 있다면 조선에는 단원 김홍도의 풍속화가 있다. 이렇게 세계적인 서양 미술작품과 견줘도 결코 뒤지지 않을 우리만의 소중한 그림이 있지만, 우리에겐 혜원과 단원이 전부다. 많은 서양화가와 그들의 작품, 서양화 기법을 알고 있으면서도 정작 소중한 우리 그림에 대해서는 잘 모르고 있기 때문이다. 안타깝게도 고구려 고분벽화 <수렵도>와 안견의 <몽유도원도>가 역사 시험에 나오기 때문에 외웠을 뿐, 이해하고 감상하기 위한 노력은 부족했던 것이다.