• 한국토양비료학회지
• /
• 제42권6호
• /
• pp.486-491
• /
• 2009

우리나라 주요 바이오에너지 작물인 밀, 유채, 보리, 옥수수, 고구마를 대상으로 그 에너지화 하는 잠재적 가치를 평가하기 위하여, 바이오매스 생산량과 생산 열량을 조사 분석하였고, 작물재배기간 동안 투입 및 생산요인을 작물간에 분석하였다. 바이오매스 생산량은 작물별 조사한 결과와 농림통계연보에 있는 데이타와는 차이가 있었으며, 특히 작물간 및 품종간에도 차이가 있었다. 본 연구에서는 작물별 직접 조사한 결과를 이용하여 바이오매스량, 총 생산열량 등을 비교분석하였다. 바이오매스 생산량에 대하여 주요 에너지 이용 부위만 고려할 때 고구마가 가장 많았고, 지상부의 곡류부위를 포함한 총 바이오 매스는 옥수수(강다옥)가 많은 것으로 나타났다. 부위별 열량을 비교해 보면 바이오 에탄올의 주 원료가 되는 밀, 옥수수 등은 $3,879{\sim}4,317cal\;g^{-1}$으로 비슷한 값을 보였으나, 바이오 디젤의 주 원료로 사용되는 유지작물인 유채의 씨(에너지 이용부위)는 $6,673{\sim}6,725cal\;g^{-1}$으로 가장 높게 나타났다. 단위면적당 총 생산 열량은 총바이오매스가 가장 많은 옥수수의 강다옥이 $8,263kcal\;m^{-2}$ 으로 가장 높게 나타났다. 옥수수의 경우 영농에 필요한 투입이 가장 많았으며 생산량 가장 많은 것으로 나타났다. 고구마는 투입 요소가 전반적으로 보통임에도 불구하고 생산요인은 높은 것으로 나타났다. 추후 대상작물을 확대하여 조사할 필요가 있으며, 우리나라의 좁은 농경지 면적을 감안하여 효율적 이용 측면도 고려하여 적절한 바이오에너지 작물을 선발할 필요가 있다.

• 한국식품위생안전성학회지
• /
• 제34권3호
• /
• pp.283-289
• /
• 2019

본 연구에서는 광주광역시 학교급식 농산물의 잔류농약을 모니터링하고 섭취량에 따른 위해평가를 실시하였다. 2015년부터 2017년 까지 광주광역시 소재 학교에 공급되는 농산물 320건을 실험대상으로 하였다. 농산물 전처리 및 잔류농약 분석은 식품공전 다종 농약 다성분 분석 제2법에 따라 120종의 잔류농약을 실험하였다. 검량선에 대한 직선성 상관계수는 0.9923~1.0000, LOD는 0.004~0.019 mg/kg, LOQ는 0.012~0.057 mg/kg으로 양호하게 나타났으며 회수율은 79.1~100.2%로 나타났다. 학교급식에 사용되는 농산물 320건 중 18건(5.6%)에서 잔류농약이 검출되었으며, 고구마 순 1건(0.3%)이 잔류농약허용기준을 초과하였다. 잔류농약 검출빈도는 고추 8회, 파프리카 3회로 다른 농산물에 비해 높은 검출빈도를 나타내었고 가장 높은 검출빈도를 나타낸 잔류농약은 boscalid(4회)와 acetamiprid(3회)로 나타났다. 실험결과 학교급식 농산물 중 고추, 파프리카, 고구마 순에 대한 잔류농약 관리가 필요한 것으로 나타났다. 잔류농약 위해도 평가 결과 고구마 순에서 검출된 bifenthrin이 64.18%로 가장 높았으며, 고추에서 검출된 boscalid 등의 Hazard index는 0.03~8.23%로 나타나 학교급식 농산물의 Hazard index는 안전한 수준으로 평가되었다. 그러나 채소류를 학교급식 식재료로 제공할 경우 잔류농약 식이섭취량을 최소화하기 위해 철저한 세척이 필요한 것으로 판단되며 친환경 농산물의 식재료 보급 확대가 필요한 것으로 판단된다.

• 대한영양사협회학술지
• /
• 제9권3호
• /
• pp.259-268
• /
• 2003

The purpose of this study was to investigate recognition and buying practices of street-vended foods among college students in Chungbuk Area. A general dietary practices including snacks, related factors of buying street-vended foods were analyzed. The results showed that many students had irregular dietary habit, especially more than eighty percent of them skipped breakfast. More than sixty percent of students had frequent snacks. It was investigated that college students ate street-vended foods two or three times per week. The order of frequent choice of street-vended foods was rice cake with pasted red pepper(51.9%), sweet and sour pork(19.7%), sundae(5.7%). In microbiological examination, MPN of Coliform and CFU of standard plate count was over a standard value respectively, and acid value of frying oil revealed over value for maximum limitation point. Therefore, food and equipment in street-vended food store was evaluated as poor sanitation status. Most of college students have opinion that street-vended food store must be kept the line. In conclusion, nutrition education for college students should be required to protect them from unsafe street-vended foods.

• 한국응용곤충학회지
• /
• 제42권3호
• /
• pp.263-267
• /
• 2003

감관총채벌레가 2000년에 처음으로 보고된 이후 남부지방에서 계속 분포가 확산되고 있어서 설문조사를 통해 그 분포확산 정도를 조사하였다. 조사결과 감관총채벌레는 1995년에 전남 장성군에서 최초로 발생하였으며, 현재는 울산광역시와 충북, 전북, 전남, 경북, 경남, 제주 등 6개 도의 26개 시군에서 발생하고 있고, 경남의 창원과 밀양 지역이 피해가 가장 심하였다. 1995년부터 2003년 4월까지 누적된 발생면적은 총 151 ha이었으며, 단감 뿐만 아니라 떫은감에도 발생하였다.

• 한국식생활문화학회지
• /
• 제1권4호
• /
• pp.361-370
• /
• 1986

A review was made about the foods for korean festival days through such literature as kyongdojapji ( 京都雜誌 ), youlyangsesiki ( 洌陽歲時記 ) and Dongkooksesiki ( 東國歲時記 ). The focus was on the 'gala foods' in Kangweon province. A survey was made on two separate areas; urban and rural district, The result showed that there was no difference in celebrating gala days between two separate area. Those festival days which are celebrating are seolnal (New Year's day) (98.5%), chusok (mid-autumn festival) (97.7%), Sangwonnal (the 15th day of January) (95.1%), and dongjee (one of 24 seasons by lunar calender) (83.1%) in the order of higher percentages. Only less than 10% of the subjects for this survey are keeping on celebrating napyong (3.5%), baikjong (the 15th day of July) (5.4%), jungyang (the 9th days of September) (6.7%) samjinnal (8.6%) and yoodooil (the 15th day of June) (9.2%). Gala foods, such as dduggook, mandoogook, injulmi (glutinous rice cake) and sikhe (sweet rice beverage) on Seolnal, ogokbab (the rice made of five kinds of cereals), jinchas (various kinds of boiled vegetables) and buryum (chestnut, pinenut and walnut) on sangwonnal, songpyun (rice cake of chusok) on chusok, patjook (rice-gruel mixed with red beans) on dongjii were being enjoyed by most people. Gala foods on seolnal and chusok had a greater variety, compared with those enjoyed on other festival days. I think it is a pity that other gala foods except those just mentioned are enjoyed in a lower percentage or almost forgotten.

• 대한의용생체공학회:의공학회지
• /
• 제28권6호
• /
• pp.744-749
• /
• 2007

Kinematic and kinetic analysis has been performed for Soft Golf swings utilizing realistic three dimensional computer simulations based on three dimensional motion tracking data. Soft Golf is a newly developed recreational sport in South Korea aimed to become a safe and easy-to-learn sport for all ages. The advantage of Soft Golf stems from lighter weight of the club and much larger area of the sweet spot. This paper tries to look into kinematic and kinetic aspects of soft golf swings compared to regular golf swing and find the advantages of lighter Soft Golf clubs. For this purpose, swing motions of older aged participants were captured and kinematic analysis was performed for various kinematic parameters such as club head velocity, joint angular velocity, and joint range of motions as a pilot study. Kinetic analysis was performed by applying kinematic data to computer simulation models constructed from anthropometric database and the measurements from the participants. The simulations were solved using multi-body dynamics solver. Firstly, the kinematic parameters such as joint angles were obtained by solving inverse dynamics problem based on motion tracking data. Secondly, the kinetic parameters such as joint torques were obtained by solving control dynamics problem of making joint torque to follow pre-defined joint angle data. The results showed that mechanical loadings to major joints were reduced with lighter Soft Golf club.

• 한국작물학회지
• /
• 제50권5호
• /
• pp.301-308
• /
• 2005

This study was carried out to investigate the effect of stem-cutting (SC) length and portion on the major agronomic characters related with dry matter production and accumulation, and to examine their relation­ships in cassava. When cassava was planted with longer SCs or with older portion SCs, major canopy or source characters like leaf number and leaf area index developed excessively, while tuber yields could be reduced due to the decrease of root/shoot ratio, relative growth rate, root dry weight, and harvest index, particularly in the bitter varieties (high cyanide-level varieties). It was considered that the sweet varieties (low cyanide-level varieties) be early­bulked with higher tuber yield when they are planted with the 25-30 cm long SCs or with the SCs from young type to semi-mature portions of mother stems, while the bitter varieties with the 15-20 cm long SCs or with the SCs from semi-mature to hardwood portions of mother stems, respectively. However, a significant interaction between length and portion of SC was not observed in all agronomic characters.

• 대한약침학회지
• /
• 제10권3호
• /
• pp.149-155
• /
• 2007

Objectives The purpose of this study is aimed at diagnosing and suggesting treatment plans for commonly seen clinical manifestation of heat symptom in the upper body and coldness in the lower body, also known as hot above, cold below syndrome. Methods Various reasons attribute to the presence of hot above, cold below syndrome, but mainly contributed by blockage of normal Qi flow by abnormality of heart-kidney root, spleen-stomach axis, and liver-lung axis. Diagnosing these abnormalities and timely alleviation to the healthy state is presented in the study. Results 1For heat in the upper body, Huang Lian Jie Du Tang(黃連解毒湯), CF, or JsD pharmacopuctures are injected on GB21, GB20. Qi stagnation in the thoracic area is treated with BUM injection on CV17. For impairment of transportation and transformation in the middle energizer, BUM pharmacopuncture is injected on CV12. Coldness in the lower energizer was relieved by bee venom or Sweet BV(Bee Venom free from enzymes) on CV6. Conclusion Above proposed methods of regulating water-fire were effective in treating hot above, cold below syndrome in clinical manifestations. But once the symptom subsides, treatment focused on eliminating innate cause should be rendered to achieve more successful results.

• 대한의용생체공학회:의공학회지
• /
• 제31권2호
• /
• pp.151-161
• /
• 2010

Soft Golf is a newly developed recreational sport in our research team aimed to become a safe and easy-to-learn sport for all ages. The advantage of Soft Golf stems from lighter weight of the club and much larger area of the sweet spot. The purpose of this study is to analyze ground reaction force(GRF) and joint angle during soft Golf club and regular golf club swing. The GRF of golf swing was recorded by 3-D motion analysis system and forceplate. The joint angle of golf swing was obtained from computer simulation model. The GRF and joint angle of golf swing are used to analysis of golf swing pattern. The pattern of GRF and joint angle during soft golf club swing was similar to that during regular golf club swing. This result means that soft golf club reduces the risk of injury and has an effect on similar entertainment of regular golf.

• 한국인터넷방송통신학회논문지
• /
• 제17권5호
• /
• pp.97-102
• /
• 2017

최근 고해상도 원격탐사 자료의 분류방안으로 컨볼루션 신경망(Convolutional Neural Networks)을 비롯한 딥 러닝 기법들이 소개되고 있다. 본 논문에서는 드론으로 촬영된 농경지 영상의 작물 분류를 위해 컨볼루션 신경망을 적용하여 가능성을 검토하였다. 농경지를 논, 고구마, 고추, 옥수수, 깻잎, 과수, 비닐하우스로 총 7가지 클래스로 나누고 수동으로 라벨링 작업을 완료했다. 컨볼루션 신경망 적용을 위해 영상 전처리와 정규화 작업을 수행하였으며 영상분류 결과 98%이상 높은 정확도를 확인할 수 있었다. 본 논문을 통해 기존 영상분류 방법들에서 딥 러닝 기반 영상분류 방법으로의 전환이 빠르게 진행될 것으로 예상되며, 그 성공 가능성을 확신할 수 있었다.