• Journal of Korean Society of Environmental Engineers
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• v.32 no.5
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• pp.455-460
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• 2010

This study was carried out to find out any inherent problems occurring in the sampling and analytical procedures, and to suggest the relevant solutions to the problems. In addition, an optimal condition of clean-up process was developed, which was based on a method using silica glass column. As a result of experiments to test any artificial contamination of blank samples such as glassware and collection media, artifacts of DBP and DEHP appeared to be detected in various kinds of laboratory tools and apparatuses used in the sampling and analytical works. Therefore, it is necessary to investigate a degree of contamination before laboratory works by conducting a prior check any possible contaminations in all experimental tools and apparatus. It is also necessary to devise a method to avoid a tool, if possible, or to use a substitute of phthalate free. If the use of any plastic tool to cause contamination is inevitable, it should be properly corrected with a blank level, as is equally treated as the sample. The clean-up process demonstrated in this study can give us a significant benefit in terms of the quantity and quality of a target compound by GC/MS analysis.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.75.2-76
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• 1999

1996-1998년까지 3개년에 걸쳐 경기 수원, 경북 경산 및 제주지역에서 수행된 시험결과 오처드그라스 공시품종의 생육특성, 건물 수량 및 사료가치는 다음과 같았다. 오처드그라스의 유식물에 있어서 활력은 Dawn 품종이 7점으로 보통이었으나 다른 품종은 8-9점으로 높은 편이었다. 내병성에 있어서는 공시품종간에는 차이가 없이 8점으로 양호한 편이었다. 월동률에 있어서는 Kara 품종이 85%로 가장 낮았으나 기타품종은 91% 이상으로 높았다.(중략)

• Journal of The Korean Society of Grassland and Forage Science
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• v.20 no.4
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• pp.303-308
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• 2000

The objective of this experiment was to evaluate chemical composition, dry matter(DM) digestibility, DM intake, relative feed value(RFV) and hay grade of imported roughage which was collected by wholesale dealer at Chungnam province in 1999. Experimental roughages includes 8 kinds of imported hays(com stover bale, tall fescue straw, green cell, bermudagrass straw, reed carnarygrass straw, alfalfa bale, sugarcane bale and oat hay) and mixture hay(control) which was harvested at Chungnam National University experimental field. Compared with mixture hay(control) except for alfalfa bale, crude protein of most imported roughage was low, but NDF, ADF, cellulose and lignin compound were high. Futhermore, DM digestibility, DM intake, RFV and hay grade of imported roughage except for alfalfa bale was significantly lower than those of mixture hay(control)(P<0.05). Therefore, it is necessary to evaluate the economic value in the aspect of quality for the imported roughages.

• Journal of Convergence for Information Technology
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• v.8 no.1
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• pp.313-320
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• 2018

The purpose of the study is to suggest ways to reduce the difference in occupancy rate and cost of incubation centers and surveyed 262 business disclosures of KBIA. the region, the subject of management, and the technology field are set as independent variables among the management disclosure items, and the occupancy rate, cost, and assigned grade are defined as dependent variables. As a result of the correlation analysis, it was found that about 19.4%($R^2=0.194$) and about 7.0%($R^2=0.059$) explain the cost of the operation, Respectively. finally Costs are high in metropolitan areas, public organizations and technology-intensive centers are inexpensive, occupancy rates are high in government and universities, and low in large cities. In order to resolve the gap, $5,720won/m^2$ is appropriate, and the center operates as a technology-intensive specialization center.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.84-84
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• 1999

사일리지용 옥수수 만파재배시 잡초방제를 위해서 알라유제 ＋ 씨마네수화제외 4종의 제초제를 공시하여 6처리 난괴법 3반복으로 시험을 수행한 결과 얻어진 성적을 요약하면 다음과 같다. 1. 제초제 처리후 옥수수 출현은 처리간 차이 없이 양호하여 공시한 제초제 모두 옥수수에 약해를 미치지 않았다. 2. 제초제 처리별 잡초방제는 기존처리구인 알라유제 ＋ 씨마네수화제 처리구보다는 파라코액제, 글라신액제, 글루포시네이트암모늄액제 및 설포세이트액제를 추가한 처리구에서 방제율 92-94%로 우수하였다.(중략)

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.96.1-96
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• 1999

본 연구는 주요 목초에서 엔도파이트가 생성하는 물질을 구명하고, 안정수준의 물질을 생산하는 우수종을 분리 접종하여 환경저항성 식물을 개발하려고 수행하였다. 공시재료는 톨 페스큐 5 품종을 선발 공시하였으며, 엔도파이트 비율과 품종의 생육특성, 수량과 사료가치를 비교하였다. 주요 연구결과로는 톨 페스큐 품종 중 엔도파이트 비율이 29%인 Barvetia가 초장과 엽폭이 크고, 녹색도가 우수하였다.(중략)

• Journal of the Korean Institute of Oriental Medical Informatics
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• v.13 no.1
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• pp.14-25
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• 2007

기공시유구역사전통적문화(氣功是悠久歷史傳統的文化), 해탈생로병사고통적수련법(解脫生老病死苦痛的修練法), 거병건신(祛病健身), 심신단련(心身鍛鍊), 수명장수적양생법(壽命長壽的養生法). "기공"("氣功") 취시행기공부(就是行氣功夫), 이수련수행(以修練修行), 예방정신화육체질병(豫防精神和肉體疾病), 건강신체(健康身體), 연년익수(延年益壽), 기공적수련방법(氣功的修練方法), 유수형태(有數形態), 육체화정신적건강(肉體和精神的健康), 시의료기공(是醫療氣功), 의료기공시검토점(醫療氣功是檢討點), 통과고대의서적정리(通過古代醫書的定理). 의료기공시다개형태변화(醫療氣功是多個形態變化), 불교전파화일기(佛敎傳播和一起), 불가기공취재일개문파불가수련활동중형성(佛家氣功就在一個門派佛家修練活動中形成). 불가기공시(佛家氣功是), 수행자소추구적(修行者所追究的), 유지건강육체적기공법(維持健康肉體的氣功法). 의료기공적모습화구도적모습(醫療氣功的模襲和求道的模襲), 시혼합형태(是混合形態). 현재(現在) 불가기공지원류(佛家氣功之原流) 가이설시소림역근경(可以說是少林易筋經). 저본논고취시이의료기공적관점래접근소림역근경(這本論考就是以醫療氣功的觀點來接近少林易筋經).

• Journal of The Korean Society of Grassland and Forage Science
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• v.27 no.4
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• pp.313-322
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• 2007

The object of this experiment was to investigate the food habits of dairy goats fed with various roughage sources. The experimental trials were conducted at Chungnam National University in 2007. The experimental roughages include five sources and 25 species in all; grass sources: 5 species (Lolium perenne, Festuca arundinacea, Poa pratensis, Agrostis alba and mixed grass, legume sources: 5 species (Trifolium pratense, Medicago sativa, Trifolium repens, Melilotus officinalis and Vicia villosa), browse sources : 5 species (Quercus serrata Thunb., Prunus jamasakura Sieb., Quercus aliena Blume, Robinia pseudoaccacia and Pinus densiflora), weed sources: 5 species (Artemisia princeps Pampanini, Erigeron canadensis, Alopecurus aegualis Sobolewski, Echinochloa crusgalli var. frumentacea (Roxb.) Wight and Rumex crispus), and native grass sources: 5 species (Zoysia japonica Steudel, Agropyron tsukushiense var. transiens (Hack) Ohwi., Arundinella hirta (Thunb.) Tanaka, Miscanthus sinensis Anderss and Phragmites comunis Trin). Ten dairy goats(Saanen) were selected which had nearly the same body weight(average 31kg). Experimental roughages were prepared by 0.5kg per 1 species fed to dairy goats, and the experiment was carried out from 09:00 to 18:00. The chemical composition and dry matter digestibility of each roughage source and species were significantly different at the sampling area, plant species, growth stages and cutting period. The dairy goats ate more roughages which had low fibrous contents, but high dry matter digestibility. Among all the 25 species of roughages, the favorite intake species order by dairy goat was observed like this: perennial ryegrass, tall fescue and red clover, respectively, and the lower intake species order was Rumex crispus. On the other hand, compared to each roughage source, total intake amount by dairy goats was showed as forage grasses (59.0%) which contained grasses(33.3%) and legumes (25.7%), browse (19.6%), weeds (15.9%) and native grasses (5.5%). Based on the result, the food intake type of dairy goats seems to be closer to grazer type.

• Journal of The Korean Society of Grassland and Forage Science
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• v.36 no.2
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• pp.104-108
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• 2016

The objective of this study was to determine how feeding forage and concentrate separately (SF) or as a total mixed ration (TMR) affects enteric methane production of cattle. Six Holstein steers ($203{\pm}22.5kg$) were used in a $2{\times}3$ changeover design experiment. Experimental diets (TMR and SF) consisted of compound feed, timothy hay and soybean curd residue in a ratio of 40:48:12, respectively, and diets were fed at 10% of metabolic body weight, on an as-fed basis. There were no differences in dry matter intake and enteric methane production (g/d) between SF and TMR but the methane conversion rate (methane energy/GE intake) of TMR was significantly higher (p=0.05) than that of SF. The mean methane emission factor (kg/head/year) and conversion rate of the two treatments were 21.4 and 0.05, respectively. There was a strong relationship between metabolic body weight and enteric methane production (p<0.001). At the present time, further studies may be necessary in order to establish the effects of TMR and SF on enteric methane production.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.94.1-94
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• 1999

5품종의 오차드그라스 종자로부터 직접 캘러스를 유도하고, 형성된 캘러스로부터 식물체를 재분화하는 조건을 확립하였다. 공시품종중 합성 19호가 캘러스 유도 및 재분화에서 가장 우수한 것으로 판명되었으며, SH, MS, N6 배지중에서 캘러스 유도시에는 MS 배지가, 재분화시에는 N6 배지가 유리한 것으로 나타났다.(중략)