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조사료와 농후사료의 급여 순서가 In vitro 반추위 발효성상, 총 가스 발생량과 메탄 발생량에 미치는 영향
이유경,이성실,성필남,이슬,백열창,김기현,이성대,천주란,지상윤,김정은,Lee, Yookyung,Lee, Sungsill,Seong, Pilnam,Lee, Seul,Baek, Youlchang,Kim, Kihyun,Lee, Sungdae,Chun, Julan,Ji, Sangyun,Kim, Jungeun 한국초지조사료학회 2021 한국초지조사료학회지 Vol.41 No.2
본 연구는 국내 고유종인 한우에서 1) 농후사료 급여 후 조사료 급여, 2) 조사료 급여 후 농후사료 급여, 3) TMR 급여의 총 세 가지 형태의 사료급여가 반추위 발효성상, 총 가스 및 메탄 발생량에 미치는 영향을 in vitro로 평가하기 위해 수행되었다. 사료 급여 형태에 따라 반추위 환경이 변화할 것으로 가설을 세우고, 옥수수 (M)와 티모시 (T)를 기질로 하여 반추위액의 24시간 in vitro 배양을 실시하였다. 따라서 시험 처리구는 총 6개로 구성되었다: M1, M2, M3, T1, T2, T3. 반추위 pH는 사료 급여방식 2에서 다른 처리구보다 높았고 (P < 0.001), 티모시 기질에서 옥수수 기질보다 높았다 (P < 0.001). 휘발성 지방산 (VFA; volatile fatty acid) 조사항목들 (Total VFA, acetate, propionate, butyrate, valerate)은 사료 급여방식 1에서 가장 높았고 급여방식 2에서 가장 낮았으며 (P < 0.001), 옥수수 기질에서 더 많이 생산되었다 (P < 0.001). 반추위액 내 acetate:propionate 비율은 사료 급여방식에 따른 효과는 없었으나 (P = 0.116), 티모시 기질이 옥수수 기질보다 더 높은 값을 나타냈다 (P < 0.001). 암모니아태 질소 (NH<sub>3</sub>-N)는 사료 급여방식 1에서 다른 처리구보다 높았으며(P < 0.001), 티모시 기질에서 높은 수치를 보였다 (P < 0.001). 총 가스 및 메탄가스 발생량은 사료 급여방식 1에서 가장 높았고(P < 0.001), 옥수수 기질에서 더 많이 생산되었다 (P < 0.001). 메탄은 이산화탄소의 20배 이상의 지구온난화효과를 갖는 것으로 알려져 있고, 반추가축이 섭취한 에너지의 손실로 작용하고 있어 장내발효 메탄 발생량을 저감하는 것은 매우 중요한 과제라 할 수 있다. 반추가축에서 사료급여 방식에 따른 메탄 발생량 차이에 대한 결론을 얻기 위해서는 보다 다각적인 형태의 연구가 필요할 것으로 사료된다. The objective of this study was to evaluate effects of feeding methods on in vitro ruminal fermentation, total gas and methane production in Hanwoo steers. Six Hanwoo steers fitted with rumen cannula (430 ± 21 kg of body weight) were randomly assigned to one of three feeding systems: 1) feeding forage 1 hour after concentrate, 2) feeding concentrate 1 hour after forage, 3) feeding mixed ration. Rumen fluid sampled from each animals was incubated 24 hours with maize or timothy substrates in in vitro. Ruminal pH was increased in feeding method 2 or maize substrate than that of other methods or timothy substrate (P < 0.001). The production of total volatile fatty acid, acetate, propionate, butyrate, and valerate were increased when steers fed diets using feeding method 1 or rumen fluid was incubated with maize substrate (P < 0.001). Increased production of total gas and methane was observed in feeding method 1 and maize substrate compared to those of other methods or timothy substrate (P < 0.001). Due to the inconsistent results between ruminal fermentation and gas production in this study, further research is required to estimate effects of feeding method on enteric fermentation and gas production in in vivo.
RF 플라즈마 처리법에 기반한 기계적 밀링된 Zr 분말의 구형화에 따른 특성 변화
이유경,최미선,박언병,오정석,남태현,김정기,Lee, Yukyeong,Choi, Mi-Sun,Park, Eon Byeong,Oh, Jeong Seok,Nam, Taehyun,Kim, Jung Gi 한국분말재료학회 (*구 분말야금학회) 2021 한국분말재료학회지 (KPMI) Vol.28 No.2
Powder quality, including high flowability and spherical shape, determines the properties of additively manufactured products. Therefore, the cheap production of high-quality powders is critical in additive manufacturing. Radio frequency plasma treatment is an effective method to fabricate spherical powders by melting the surface of irregularly shaped powders; in the present work, mechanically milled Zr powders are spheroidized by radio frequency plasma treatment and their properties are compared with those of commercial Zircaloy-2 alloy powder. Spherical Zr particles are successfully fabricated by plasma treatment, although their flowability and impurity contents are poorer than those of the commercial Zircaloy-2 alloy powder. This result shows that radio-frequency plasma treatment with mechanically milled powders requires further research and development for manufacturing low-cost powders for additive manufacturing.
행지(行遲)로 진단된 하지부 운동발달지연 환아의 치험 1례 보고
이유경,채중원,Lee, Yu-Gyoung,Chae, Jung-Won 대한한방소아과학회 2007 대한한방소아과학회지 Vol.21 No.3
Objectives This is the clinical report about 1 case of patient with delayed motor development in lower limbs. Methods The herb medication, acupuncture therapies were applied for treating delayed motor development from June 9 to November 20, 2007. Results After 5 months treatment, the patient's delayed motor development were improved by oriental medical therapy. Conclusions We report the good results of oriental medical therapy on a pediatric patient with delayed lower limbs motor development. For more accurate studies, further studies would be needed with more cases.
이유경,채중원,Lee, Yu-Gyung,Chae, Jung-Won 대한한방소아과학회 2009 대한한방소아과학회지 Vol.23 No.3
Objectives This study is designed to investigate the effects of Jujadokseo-hwan on the brain ability and inducing oxidative stresses. Methods We measured the changes of regional cerebral blood flow and mean arterial blood pressure. Then we analyzed histological examination, immunohistochemistric response and anti-oxidant activity of Jujadokseo-hwan. Results 1. Treatment of Jujadokseo-hwan significantly increased regional cerebral blood flow but decreased mean arterial blood pressure. 2. Treatment of Jujadokseo-hwan-induced increase of regional cerebral blood flow was significantly inhibited by pretreatment with indomethacin (1 mg/kg, i.p.), an inhibitor of cyclooxygenase. 3. In histological examination through TTC stain, group I was no change, but group II showed that discolored in the most cortical part. Group III showed that decreased discolor in the cortical part. 4. In immunohistochemistric response of BDNF, group II showed that lower response effect. Group III showed that increase response effect. 5. Treatment of Jujadokseo-hwan increased proliferation rates of Glial cell effectively 6. Treatment of Jujadokseo-hwan accelerated proliferation rates of C6 cells in vitro. In addition, protective effects on cell death induced by paraquat, rotenone and hydrogen peroxide. In addition, activity of SOD were increased by treatment with Jujadokseo-hwan. Conclusions In conclusion, Jujadokseo-hwan can improve of the brain ability, learning ability, memory ability and induce ischemic brain injuries.
이유경,이용환,Lee, YuKyong,Lee, Yong-Hwan 한국반도체디스플레이기술학회 2018 반도체디스플레이기술학회지 Vol.17 No.1
Image enhancement is a necessary end essential step after taking a picture with a digital camera. Many different photo software packages attempt to automate this process with various auto enhancement techniques. This paper provides and implements a system that can learn a user's preferences and apply the preferences into the process of image enhancement. Five major components are applied to the implemented system, which are computing a distance metric, finding a training set, finding an optimal parameter set, training and finally enhancing the input image. To estimate the validity of the method, we carried out user studies, and the fact that the implemented system was preferred over the method without learning user preferences.
뇌출혈(腦出血)을 동반(同伴)한 간경변증(肝硬變症) 환자(患者)의 치험(治驗) 1례(例)
이유경,강재춘,김태식,Lee, You-Kyung,Kang, Jae-Chun,Kim, Tae-Sig 대한한방내과학회 2000 大韓韓方內科學會誌 Vol.21 No.1
One of my administrational patient had the disease of liver cirrhosis with cerebrovascular hemorrhage simultaneously. so we investigated the process of cureness in detail. In the investigational method, at the day of onset the patient was administered the sunghyangjunggisan(星香正氣散) for 4 days. hyelbuchugatanggamibang(血府逐瘀湯加味方) for 7 days, the day after saengganggunbitang(生肝建脾湯) and the extracts of Artemisia capillaris(茵蔯), Alisma plantago(澤瀉) were took for 17 days. So we searched the attentioanable results in the Biochemistry. Brain CT, Sonogram. Abdominal CT, and the decrease of self symptom. In the results we recognized that the patient was improved in the LFT, the smaller portal vein, the resolving of hemorrhage, the decrease of self symptom etc.
소뇌기능이상의 임상양상을 특징으로 보인 뇌교부출혈 환자 1례
이유경,공경환,용형순,고성규,부송아,Lee, You-Kyung,Kong, Kyung-Hwan,Yong, Hyung-Soon,Ko, Seong-Gyu,Bu, Song-Ah 대한한방내과학회 2000 大韓韓方內科學會誌 Vol.21 No.5
I experienced a case of a patient with clinical features of cerebellar dysfunction in the intracranial hemorrhage which encroached the basis of lower pontine and all parts of pontine tegmentum. So I report this case with bibliographical inquiry. In addition, I applied the treatment of Oriental medicine to sequelae of intracranial hemorrhage like disorders of eye movement, central dizziness, cerebellar tremor and ataxias but the effect did not meet my expectation. I anticipate more clinical studies and reports on this hereafter.