• Journal of Animal Science and Technology
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• v.44 no.5
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• pp.617-624
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• 2002

Annual legume is being used as an important source of protein for farm animals and an ingredient for nitrogen fertilizers. There are, however, difficulties in selecting appropriate cultivar and forage management technique. The objective of this study is to select the best performing cultivars and evaluate a forage value on annual legume at two locations (Suwon and Sunghwan) for 1 year (1999${\sim}$2000). All cultivars shown a seedling vigor and lodging resistance of 8 rating or higher. Crimson and rose clover showed that they are appropriate for overwintering, but ;Laser; (35.9%) and 'Nitro'(9.1%) of persian clover variety did not overwinter well from 1999 to 2000. Flower stage was observed 4th of May for 'Tibbee', 6th of May for 'Contea' crimson clover, and 29th of April for 'Bolta balansa' rose clover. DM yield of a crimson clover 'Contea' (4,218kg/ha) was the highest among the legume forage. A crimson clover 'Tibbee' and rose clover 'Bolta balansa' also had a high production yield (3,874 and 3,828kg/ha). Calculations of relative feed value (RFV) based on the acid and neutral detergent fiber (ADF and NDF) of annual legume were over 125, which means that quality was high. According to the results of this study, crimson and rose clovers are recommended due to their high winter survival rate and high DM yield. Persian clover is not recommended because of a low overwintering rate at the Central region in Korea.

• Journal of The Korean Society of Grassland and Forage Science
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• v.15 no.3
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• pp.169-174
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• 1995

To investigate the effects of nitrogen(N) fertilization levels on the dry matter(DM) yield, nutrition yield, and N efficiency of forages in mixed sward of alfalfa-grasses, a field experiment arranged by randomized complete block design with five treatments(0, 70, 140, 210 and 280kg N/ha) was conducted at Livestock Experiment Station in Suwon, September, 1990 to February, 1993. During two years, average DM yields of forage increased as N fertilization level was increased, but no significant difference was found between DM 10,266kg of N 210kgha and DM 10,845kg of N 280kgha. Crude protein and energy productivity of forages increased as N fertilization level was increased, and the increasing degree was highest between N 140kg and 210kg/ha fertilization. With increasing N fertilization, mineral contents tended to decrease in P and K/Ca+ Mg equivalent ratios, to increase in Mg, but not to be regular in the other elements. Efficiency of N was highest at N 210kg/ha fertilization, which produced DM 21.6kg, net energy lactation 129.3 MJ, starch equivalent 12.3kStE and total digestible nutrients 14.5kg per Ikg N.

• Journal of agricultural medicine and community health
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• v.34 no.2
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• pp.256-266
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• 2009

Objectives: This study was to investigate the factors affecting the depression of the elderly women in poverty in community. Methods: The subjects were 1,208 elderly women over 65 years who were enrolled in the Public Health Care Center from Apr. 2008 to Jun. 2008. Data were collected using questionnaires including general characteristics, health related behaviors and health status by nurses at the time of enrollment. The collected data were analyzed by descriptive statistics, $x^2$-test, Pearson correlation coefficients and multivariate logistic regression. Results: The major findings of this study are as follows : The elderly women in poverty show a tendency to have lower level in income, education, self-rated health, cognitive function compared with ordinary women in old age. The predictors of depression of the elderly women in poverty were spouse's existence or nonexistence, type of insurance, cognitive function, and self-rated health. Conclusion: These findings suggest the need to develop nursing strategies for decreasing depression in the elderly women in poverty. To decrease the depression of the elderly women, the above-mentioned major influencing factors should be considered.

• Journal of The Korean Society of Grassland and Forage Science
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• v.23 no.4
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• pp.293-298
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• 2003

Livestock manure have been utilized as fertilizer, and trying to make resources natural circulation of organic materials. This experiment was carried out to investigate the effect of swine slurry on production and nutritive value of rye, and to determine optimal application level for 2 years from Oct. 2000 to May 2002 in the experimental field of Grassland and Forage Crops Division, National Livestock Research Institute. Summary of the results were as follows. The application of swine slurry 200% Plot showed the best regrowth after winter and lodging was severe in all plots except non-fertilized plot. Plant height was lower in lodging plots. The dry matter yield was not significantly difference between chemical fertilizer(CF) plot and swine slurry application plots, and swine slurry 100% + CF 50% plot showed the highest yield among manure application plots. The dry matter yield per input nitrogen was 80kg in CF, 81kg in swine slurry 100% application plot. Above the level, it was decreased severely by 41 ∼ 61kg. Conclusively, application to swine slurry 100% showed superior productivity considering the DM yield per input nitrogen, That level would be recommended to produce higher yield and to conserve environment.

• Journal of The Korean Society of Grassland and Forage Science
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• v.39 no.1
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• pp.1-8
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• 2019

This study was conducted to predict the energy requirements for maintenance and growth of female Korean black goats during their growth and pregnancy phases. Fifty female goats ($18.7{\pm}0.27kg$) in their growth phase with an average age of 5 months were stratified by weight and randomly assigned into 5 groups. They were fed 5 diets varying in metabolic energy (ME) [2.32 (G1), 2.49 (G2), 2.74 (G3), 2.99 (G4), and 3.24 (G5) Mcal/kg] until they were 9-month-old. After natural breeding, 50 female goats ($30.7{\pm}0.59kg$) were stratified by weight and randomly assigned into 5 groups. They were fed 5 diets varying in ME [2.32 (P1), 2.43 (P2), 2.55 (P3), 2.66 (P4), and 2.78 (P5) Mcal/kg]. The average feed intake ranged between 1.5 and 2.0% of the body weight (BW), and there was no significant difference between the treatment groups with goats in growth or pregnancy phases. Average daily gain (ADG) in diet demand during the growth phase increased with an increasing ME density and ranged from 46 to 69 g/d (p<0.01). Feed conversion ratio (FCR) improved with the ME density during the growth phase (p<0.01). The intercept of the regression equation between ME intake and ADG indicated that energy requirement for maintenance of goats during growth and pregnancy phases was $103.53kcal/BW^{0.75}$ and $102.7kcal/BW^{0.75}$, respectively. These results may serve as a basis for the establishment of goat feeding standards in Korea. Further studies are required to assess the nutrient requirement of goats using various methods for improving accuracy.

• Journal of The Korean Society of Grassland and Forage Science
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• v.28 no.3
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• pp.215-220
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• 2008

This experiment was conducted to compare forage production and feed value of winter forage crops at the experimental field of Livestock Division, National Institute of Subtropical Agriculture from 2007 to 2008. The experiment was arranged in a randomized block design with three replications. The five winter forage crops used in this experiment were barely ('Youngyang' and 'Yuyeon'), oats ('Samhan' and 'Swan'), wheat ('Kumkang' and 'Woori'), triticale ('Shinyoung') and italian ryegrass ('Hwasan 101' and 'Florida-80'). The species having the fastest heading date was wheat (5th April) while the heading date of oats ('Samhan') was the latest as 28th April. The dry matter (DM) content of wheat was the highest among the five winter forage crops. Italian ryegrass ('Hwasan 101') showed the highest CP content by 11.2% and oats (Swan) showed the lowest content by 9.8%. Average acid detergent fiber (ADF) and neutral detergent fiber (NDF) content were 28.6 and 50.8% respectively. The five winter forage crops have narrow range of total nutrient digestibility (TDN) from 64.0% to 69.1%. Italian ryegrass ('Hwasan 101') showed the highest DM yield by 25,951 kg/ha, but the DM yield of barely and wheat low by 13,892 kg/ha ('Yuyeon') and 14,815 kg/ha ('Woori'), respectively. Italian ryegrass and oats have higher forage yield and feed value in Jeju. Also, oats has high grain and forage yield. The results demonstrated oats can cultivate as alternative winter forage crop for whole crop silage barely in Jeju.

• The Inventors News
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• no.51
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• pp.1-16
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• 2006

함께 즐기는 '여성 발명인 축제'열린다/이 가을을 여성 발명의 계절로/빠진 영구치, 임플란트 기술로 대신한다/국내 의약품 특허출원 외국 기업이 주도/웰빙 붐 타고 기능성 베개 출원 늘어나/토양오염 복원기술, 관심 높아져/기업 CI교체 따른 상표출원 급증/여성경제단체, 오세훈 서울 시장 초청 간담회 가져/'2006대한민국 발명특허대전' 개최/특허청, 중소기업 특허경영 지원단 발족/한국특허문헌, WIPO로 전세계 서비스 실시/APEC 여성지도자네트워크 회의 개최/'2006 특허기술 사업화 성공사례발표회'/세계최초 신개념 CTF기술 상용화/특허청, 제4회 발명 장학생 선발/김치, 러시아 모스크바에 진출한다/고속 주행 틸팅열차 특허로 인정/현직 공무원, 다양한 발명품으로 특허와 되다/자신만의 'TV채널' 선택 가능하다/전지산업, 이온성 액체 관련 특허로 안전하게/명확한 의견 제출로 효율적인 심판 진행/치매예방물질 2배인 김치 개발됐다/한국과학기술연구원 논문 특허심의제도 도입/'한국 오시면 KISS로 맞이합니다'/삼성전자, 중국 특허 마쓰시타 아성 깨다/싱가포르 수출 인큐베이터로 중소기업 해외시장 공략/특허청, 영남대와 지식재산역량 강화 위한 약정 체결/깎는 횟수 줄인 잔디, 세계최초 개발/순창군, 웰빙 고추장 특허출원/역사 속의 발명품/하루 10분 발명교실/특허Q&A/케이제이알텍(주)문승자 대표/한.일 변리사회 업무협정체결 25주년 기념식 개최/중소기업청, 하반기 18조원 신용보증 공급 계획/'2006 대만 국제발명품 전시회'서 한국 참가자 수상/'불났을 때' 긴급 대피 요령은?/아이디어 착상 및 발명 기법/창의성과 도전정신이 성공한 사업가 만든다/사탕을 탄생시킨 사람들/'휴대폰 특허료 1.3억불 내라' 중재 결정/'신발깔창 휴대폰 충전기'/휴대폰으로 광고 받고 무료 문자 이용 가능/아파트 저작권.특허 열풍 거세게 불어/'골다공증 예방 요구르트' 나왔다/갈증 느끼지 않아도 '물' 자주 마셔라/10월 '지재권 및 여성발명 창의교실' 개최안내/한국여성발명협회 회원사 발명품 가이드/함씨네토종콩종합식품, 특선 수상/

• Journal of the Korean earth science society
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• v.26 no.1
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• pp.66-77
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• 2005

Aerological observation at Heuksando located in south-western part of Koran Peninsula has been started at 1 June 2003. In order to clarify the improvement of meteorological prediction quality. it is necessary to compare between aerological data observed at Gawngju and Heuksando and to make clear the influence of Heuksando data assimilation. Therefore numerical simulations were carried out with High resolution meterological prediction system based on MM5(The 5th Generation Mesoscale Model). The pattern of wind and temperature field observed at Heuksando and Gwangju are different due to land surface friction End Sensible heat flux at surface and the wind field Simulated With Gwangju and Heuksando aerological data agree well with observation wind field. Although the amount of precipitation in these experiments is underestimated. the area and starting time of precipitation around Honam province in case with Heuksando data is more reliable that without the data.

• Korean Journal of Remote Sensing
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• v.11 no.2
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• pp.1-16
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• 1995

This study is conducted to eveluate the potential of a GIS to assist an application problem. GIS has been applied to rainfall-runoff modeling over Soyang area. Various rainfall-runoff models have been developed over the years. A distributed rainfall-runoff model is selected because it considers the topographic characteristics over the basin. GIS can handle the spatial data to enhance the modeling. GRASS-a public domain GIS S/W-is used for GIS tools. Digital database is generated, including soil map, vegetation map, digital elevation model, basin and subbasin map, and water stream. The inpu data for the model has been generated and manupulated using GIS. The database, model and GIS are integrated for on-line operation. The inflow hydrographs are tested for the flood of Sept., 1990. This shows the promising results even without the calibration.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.93-93
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• 2020

미래 기후변화로 인해 집중 호우, 가뭄의 발생 빈도가 증가하고, 물 부족, 수질 오염 등으로 인해 합리적인 수자원 계획 및 관리의 중요성이 증가하고 있다. 기후변화는 유역간 물 이동량 뿐만 아니라 유역의 하천 유량 및 수질에 영향을 미치기 때문에, 물 이동량이 많은 유역에서는 기후변화 시나리오를 고려한 하천 유량 및 수질 변화를 정량적으로 평가해야 한다. 만경강 유역(1,602 ㎢)은 하류 지역에 비옥한 평야가 분포되어 있어 농업이 발달한 유역이나, 유역 내 가용 용수가 부족하여 인근에 위치한 금강 용담댐의 발전용수를 공급받아 사용하고 있다. 발달된 농경지로부터 발생되는 비점오염, 축산 점오염원으로 인한 수질 문제가 심각할 뿐만 아니라, 만경강의 수질은 궁극적으로 새만금호에 영향을 미치기 때문에 더욱 엄격한 관리가 필요하다. 따라서, 본 연구에서는 유역간 물이동량, 취수량 등을 고려하여 Soil and Water Assessment Tool(SWAT) 모형을 구축하였다. 2개의 수위-유량 관측소의 일자료와 2개의 수질관측소 월자료를 이용하여 보정(2012~2014) 및 검증(2016~2018)을 수행한 결과 유출량의 평균 Nash-Sutcliffe model Efficiency (NSE)는 0.49 ~ 0.51, SS, T-N, 그리고 T-P에 대한 평균 결정계수(Coefficient of determination, R²)는 0.73, 0.78, 0.72였다. 미래 기후변화에 따른 유역의 수문 및 수질 변화 분석을 위해 증발산량 산정이 가능한 RCP 8.5 기후변화 시나리오에 STARDEX를 활용하여 가장 습윤한 시나리오 및 가장 건조한 기후변화 시나리오를 각각 1개를 선정할 것이다. 선정된 시나리오를 구축된 SWAT 모형에 적용하여 미래 유역간 물이동이 유역의 하천 유량 및 수질에 미치는 영향을 미래 평가기간(S1:2011~2040, S2:2041~2070, S3:2071~2100)으로 구분하여 분석할 것이다.