• Journal of Radiation Industry
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• v.5 no.4
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• pp.337-345
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• 2011

In order to provide an effective preparedness for a nuclear or radiological emergency happening in the domestic or neighborhood countries and to solve the vague fear of the people for the ingestion of radioactive livestock products, the establishment of national guideline level for radionuclides in feed is urgently necessary. This is because it is important to secure the safety and to manage the crisis in the agricultural, fishery and food sector by performing the effective safety control during and after nuclear incident. This study was performed to investigate the report cases of international organizations and foreign countries to set up a domestic control standard for managing radioactive substances that may be contaminated in animal feeds due to the nuclear power plant incident. In addition, an attempt was made to provide a useful reference that can help prepare a domestic control standard, using a coefficient that can consider the transfer into livestock through the intake of radioactive contaminated animal feeds. The standard radioisotopes investigated were confined to radioactive cesium ($^{137+134}Cs$) and iodine ($^{131}I$). Guideline level for the radionuclides was calculated by using the transfer coefficient factor and the maximum daily intake of animal feed provided by IAEA. For example, the maximum daily intake of animal feed was set as $25kg\;d^{-1}$ for dairy cows, $10kg\;d^{-1}$ for beef cattle, $3.0kg\;d^{-1}$ for pigs and $0.15kg\;d^{-1}$ for chickens. The result values for radioactive cesium were calculated as $8,696Bq\;kg^{-1}$, $4,545Bq\;kg^{-1}$, $1,667Bq\;kg^{-1}$ and $2,469Bq\;kg^{-1}$, respectively. The results for radioactive iodine showed the ranges between $741Bq\;kg^{-1}$ and $76,628Bq\;kg^{-1}$. These data can be utilized as a scientific reference for the preparation of a crisis management manual for the emergency control due to nuclear power plant accident in Korea and neighboring country. These results will contribute to establish the safe feed management system at national level as manual for responding the radioactive exposure of agricultural products and animal feeds, which are currently not established.

• Journal of agricultural medicine and community health
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• v.43 no.4
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• pp.224-233
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• 2018

Objectives: This study was conducted to identify the relations between multiple chronic diseases and peridontal diseases in Korean adults. Methods: A total of 4,142 cases was set for analysis, who aged 35 and over and finished with the third year health survey and oral health check-up of the fifth Korea National Health and Nutrition Examination Survey(2012). Peridontal disease was defined if community periodontal index(CPI) was 3(formation of paradental cyst of more than 4mm) or 4(formation of paradental cyst of more than 6mm). Results: The subjects consisted of 48.5% male and 51.5% female. The prevalence rate of peridontal disease was found to be 30.1% in total. In peridontal disease the more the age increased, and the lower the education level and income level as well as the more where the residential area was rural, the higher the prevalence rate was(p<0.01). According to the number of multiple chronic conditions the prevalence rate of periodontal disease accounted for 27.8%, 31.9%, 33.1%, and 35.2% when there were 0, 1, 2, and 3 or more chronic diseases respectively. As a result of logistic regression analysis, gender, age, education level, residential area, current smoking, and use of oral hygienic products were found to be significant factors on peridontal disease. Conclusions: This research revealed the prevalence rate of peridontal disease was 30.1% in Korean adults and health behaviors affecting on periodontal disease were more significant.

• Korean Journal of Plant Resources
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• v.32 no.5
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• pp.423-432
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• 2019

In order to select potential plant resources as functional materials and natural antioxidants, we evaluated antioxidant activity and serotonin derivatives of safflower germplasm collected from five countries. N-(p-Coumaroyl) serotonin (CS) and N-feruloylserotonin (FS) were analyzed by using Ultra Performance Liquid Chromatography (UPLC). Total polyphenol content (TPC) was determined by Folin-Ciocalteu method and antioxidant activities were estimated by 2,2-diphenyl-1-picryl-hydrazil (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid) diammonium salt (ABTS), Ferric reducing antioxidant power (FRAP) and Reducing power (RP) assays. The TPC showed a range of 28.25 to $90.53{\mu}g$ gallic acid equivalent (GAE)/mg dried extract (DE). DPPH, ABTS, FRAP and RP assay were in the range of 18.76 to 93.98, 48.91 to 163.73, 3.80 to 132.29 and 26.32 to $80.08{\mu}g$ ascorbic acid equivalent (ASCE)/mg DE, respectively. Among the five countries, safflower seed collected from Iran had the highest levels of serotonin derivatives and antioxidant activities than other countries (p<0.05). CS showed high correlation with TPC, ABTS and DPPH (r=0.673,0.727,0.820), and FS showed high correlation with DPPH (r=0.740). Accessions IT321214 and IT321215 could be useful for development of new functional materials and could be used as a source of valuable natural antioxidant materials.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.68 no.4
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• pp.304-312
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• 2023

Plant breeding is a time-consuming process, mainly due to the limited annual generational advancement. A speed breeding system, using LED light sources, has been applied to accelerate generational progression in various crops. However, detailed protocols applicable to soybeans are still insufficient. In this study, we report the optimized protocols for a speed breeding system comprising 12 soybean varieties with various maturity ecotypes. We investigated the effects of two light qualities (RGB ratio), three levels of light intensity (PPFD), and two soil conditions on the flowering time and development of soybeans. Our results showed that an increase in the red wavelength of the light spectrum led to a delay in flowering time. Furthermore, as light intensity increased, flowering time, average internode length, and plant height decreased, while the number of nodes, branches, and pods increased. When compared to agronomic soil, horticultural soil resulted in an increase of more than 50% in the number of nodes, branches, and pods. Consequently, the optimal conditions were determined as follows: a 10-hour short-day photoperiod, an equal RGB ratio (1:1:1), light intensity exceeding 1,300 PPFD, and the use of horticultural soil. Under these conditions, the average flowering time was found to be 27.3±2.48 days, with an average seed yield of 7.9±2.67. Thus, the speed breeding systems reduced the flowering time by more than 40 days, compared to the average flowering time of Korean soybean resources (approximately 70 days). By using a controlled growth chamber that is unaffected by external environmental conditions, up to 6 generations can be achieved per year. The use of LED illumination and streamlined facilities further contributes to cost savings. This study highlights the substantial potential of integrating modern crop breeding techniques, such as digital breeding and genetic editing, with generational shortening systems to accelerate crop improvement.

• Child Health Nursing Research
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• v.16 no.2
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• pp.164-174
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• 2010

Purpose: The purpose of this study was to evaluate the physical growth and developmental status of infants and children of married immigrant women. Methods: The participants were 92 infants and children aged from birth to 6 yr whose mothers were married immigrant women living in one rural area. Physical growth and developmental status were evaluated by using anthropometric assessment, and Korean Denver II developmental screening test. Results: Of the participants, 10.8% were below the 3rd percentile for weight, 13.0% for length, 5.4% for head circumference, and from 69.6% to 79.3% were distributed below the 50th percentile on growth charts. Further, 18.5% were classified as having questionable development. Factors related to low physical growth in infants and children were mother's weight and mother's level in Korean language classes. Conclusion: The physical growth and developmental status of children is vulnerable and serious. The study results suggest a need for regular growth and developmental evaluations. Political support is important for these mothers. In addition, there also is a need to develop early intervention strategies to promote growth and development of the infants and children of these married immigrant women.

• Proceedings of the KSCN Conference
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• 2003.05a
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• pp.124-124
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• 2003

본 연구에서는 국립보건원 유전체연구소에서 실시하고 있는 지역사회 유전체역학사업의 일환으로 안성과 안산 지역의 40세 이상 성인을 대상으로 영양실태를 조사하였다. 두 지역 각 200명을 표본집단으로 선정하여 2002년 1월 25일부터 2월 2일 까지 조사를 실시하였으며, 3일간 식이기록법으로 그 날 섭취한 음식명, 음식재료명, 재료의 양, 매식 여부, 식사시간을 기입하도록 하였고, 이 중 분석 가능한 326(안성 163, 안산 163; 회수율 80.3 %)명의 설문을 분석하였다. (중략)

• Women's Health Nursing
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• v.17 no.2
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• pp.99-108
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• 2011

Purpose: The purpose of this study was to compare the levels of stress, social support, and marital satisfaction between married immigrant women living in urban areas and women living in rural areas to identify ways to improve their mental health. Methods: Two hundred married immigrant women were recruited from multicultural familysupport centers located in Daejeon City and Chungcheong Province. From July, 2009 to January, 2010, data were collected using self- administered questionnaire. Study instruments were scales for acculturative stress, housewives life stress, support from spouse, and marital satisfaction. Results: Urban married immigrant women had lower levels of acculturative stress and higher levels of support from spouse and more positive marital satisfaction compared to rural women. Both groups reported similar levels of stress in life as a housewife. Factors influencing marital satisfaction in both group were lower levels of acculturative and housewives life stress, higher levels of support from spouse, and living with parents-in-law. Conclusion: Rural married immigrant women may have more problems in adjusting to Korean culture and marriage compared to urban women. Therefore, to improve the physical and psychological wellbeing and marital adjustment of married immigrant women, development of nursing strategies according to area of residence is needed.

• Journal of Korean Society of Forest Science
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• v.95 no.1
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• pp.60-72
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• 2006

The aim of this paper is to identify and evaluate relations for forest greening and the firewood substitution for home use after 1945 Liberation of Korea. Korea faced serious forest degradation by the early 1960s due to the enormous firewood consumption, which was about ten million cubic meters annually, for home use. If the trend of firewood consumption was maintained until 1955's, the total forest area in Korea could be thoroughly degraded within 10 years. The firewood substitution for home use had to be solved as soon as possible. For this purpose, energy sector by the Ministry of Commerce and Industry carried out the substitution policy for home using the briquettes which was the only natural resources for energy produced in Korea. Firewood was prohibited being carried in the major cities by forestry sector, the Ministry of Agriculture and Forestry, from 1958. Only 5.2% of household in the cities used the forest products consumed as a fuel in 1970 because these inter-sectoral substitution measures of firewood for home use turned out a success gradually. After the 1970s, firewood consumption for home use was naturally decreased due to rural people's explosive move to cities, who were major consumers of firewood for home use at that time. Firewood for cooking was substituted by LPG gas after 1985 and firewood for house heating was substituted by coal and oil after 1980. Finally, on the basis of the firewood substitution for home use, the forest degradation that lasted over one hundred years was put a period.

• Journal of Korean Society of Archives and Records Management
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• v.16 no.2
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• pp.143-172
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• 2016

This study analyzes the process of growth of Busan from a fishing village to the capital city of South Gyeongsang Province and the central city of transportation and commerce, and an industry with records. The results of the analysis are as follows: after the port opened in 1876, there has been a decline in settlement spaces in Dongnae; on the other hand, there has been an increase in migration spaces around the port of Busan. Waegwan (倭館) nearby Yongdusan Mountain (龍頭山) was changed to the Japanese concession; thus, the number of Japanese moving into Busan had rapidly increased. As a result, the Japanese government carried out reclamation work for securing available lands for the construction of port facilities and other facilities. The Japanese government built public offices and houses, as well as production facilities for daily necessities around the port of Busan. The opening of the Seoul Busan railway (京釜線) and the cross-channel liner between Busan and Shimonoseki (釜關連絡船) led to the growth of Busan and the development of its status. At this time, as the main industry of Busan was trade, Busan had grown as a commercial city. As Busan had grown as a central city of transportation and commerce, the provincial government building of Gyeongsangnam-do (慶尙南道) moved to Busan. Thus, Busan became the central city of local politics and administration. After the Land Survey Project, a large scale of farmers were recruited for low-wage work in the new port. Because of the abolition of the corporation law, Japanese capitalists moved into their colony in Busan. There, large-scale factories, such as the Joseon cotton textile factory, were established. Through this process, the locality of Busan was changed from a fishing village to a commercial city and, finally, to a city of commerce and industry.

• Journal of agricultural medicine and community health
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• v.47 no.2
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• pp.78-89
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• 2022

목적: 이 연구는 2019학년도 역학조사관 입문교육 과정에 참여한 29명의 수습과정생에게 참여형 자기주도 학습 역학조사관 연수 프로그램(FETP)의 효과와 만족도 등 역량 변화를 분석해 그 결과를 향후 과정 개발의 참고 자료로 활용하고자 하였다. 방법: 교육 프로그램의 만족도와 교육 후 모듈에 대한 역량 변화를 평가하는 연구가 수행되었다. 만족도와 역량의 차이 비교는 크루스칼 왈리스 검정(Kruskal-Wallis test)를 실시하였고, 역량의 차이는 윌콕슨 부호순위검정(Wilcoxon signed rank test)에 의해 이루어 졌다. 결과: 2019년 FETP에 참여한 역학조사관 중 여성은 48.3% 였으며, 40세 미만은 9.4% 였다. 역학조사관 입문교육과정 모듈(역학조사, 보건통계 및 정보통계, 감염병 국가 체계, 감염병 질환 감시 체계, 진단 및 실험실 검사, 생물 안전 및 관리, 주요 감염성질환 관리와 조사, 커뮤니케이션, 협동과 리더십, 일반과정)별 만족도는 실무적 도움, 전문성, 기능, 태도 등에서 4점(5점 만점)을 초과하였고, 전체 4.2±0.21(5점 만점)점으로 높은 수준이였다, 모듈의 교육훈련 전후 평균 점수는 2.25±0.91, 3.68±0.63점 등으로 유의한 향상이 있었으며, 모든 모듈 및 하위 주제들도 유의한 향상이 있었다(p<0.001). 그 중에서 현장역학조사 경험이 가장 높은 변화가 있었고, 표본 수집과 실무가 가장 낮은 역량 변화가 있었다. 결론: 2019년 진행된 입문교육 과정은 수료 후 학생들의 역량은 개선되었고, 만족도는 높은 편이었다. 참여형 자기주도학습의 촉진은 역량을 향상시킬 뿐만 아니라 보건 종사자들의 자신감을 높일 수 있었다.