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약용 식물 가공 부산물의 첨가가 산란계의 생산성 및 난질에 미치는 영향
김지혁,나재천,김상호,장병귀,강희설,이덕수,이상진,좌승협,Kim J.H.,Na J.C.,Kim S.H.,Jang B.G.,Kang H.S.,Lee D.S.,Lee S.J.,Jwa S.H. 한국가금학회 2006 韓國家禽學會誌 Vol.33 No.2
본 실험은 약용 식물 가공 부산물의 산란계에 대한 급여 효과를 시험하기 위해 수행되었다. 95주령의 산란계 560수를 7처리 4반복으로 반복당 20수씩 배치하여 12주간 사육하면서 동충하초, 인진쑥, 울금 가공 부산물을 각각 1.5%, 3.0% 를 사료에 혼합 급여하였다. 산란율은 전 기간에 걸쳐 처리 구간에 유의적인 차이를 보이지 않았으며, 사료 섭취량과 평균 난중도 영향을 받지 않았다. 난각 두께, 난각 강도, 난각 색, 난황색에 있어서도 역시 처리구간 유의차가 나타나지 않았으나, Haugh unit 에 있어서는 대조구에 비해 모든 약용식 물 처리구에서 유의적으로 높았다(p<0.05). 실험 결과를 종합할 때, 동충하초, 인진쑥, 울금 가공 부산물을 산란계 사료 내 $1.5{\sim}3.0%$ 첨가 급여시 사료 섭취량, 산란율에는 영향을 미치지 않았으며, Haugh unit 에 있어서 유의적으로 향상되는 결과를 나타내어 고품질 계란 생산 및 약용식물 가공 부산물의 사료 자원화 가능성을 보여주었다. This experiment was carried out to investigate the effects of medicinal plant by-products on productivity and egg quality in laying hens. A total of five hundred sixty laying hens was randomly distributed into 7 treatments with 4 replicates of 20 birds per replicate and fed com-soy based experimental diets containing 1.5% and 3.0% by-products of Cordyceps militaris, Artemisia capillaris and Curcuma aromatica S., respectively for 12 weeks. Egg production was not significantly different among treatments. Haugh unit was significantly increased in all treatments compared to control(p<0.05). There was no difference among the treatments in egg shell breaking strength, shell thickness, and yolk color. In conclusion, three medicinal by-products used in this experiment did not affect feed intake, egg production and showed positive effect on Haugh unit when they used $1.5{\sim}3.0%$ of feed.
Kim, H.J.,Kim, T.H.,Lee, W.J.,Chai, Y.,Kim, J.W.,Jwa, Y.J.,Chung, S.,Kim, S.J.,Sohn, E.,Lee, S.M.,Choi, K.Y.,Kim, K.H. Elsevier 2014 Thermochimica acta Vol.585 No.-
The single crystal of the electron doped BaSnO<SUB>3-δ</SUB> system has been recently found to have high electrical mobility (up to 320cm<SUP>2</SUP>V<SUP>-1</SUP>s<SUP>-1</SUP>) at room temperature and excellent oxygen stability. Although thermal conductivity (κ) of the BaSnO<SUB>3-δ</SUB> single crystal is an important physical quantity, the κ measurement by the conventional DC method has been difficult due to the limited crystal size. Herein, we report the first measurement of κ by using the 3ω method from ~20 to 300K in the oxygen deficient BaSnO<SUB>3-δ</SUB> single crystal with carrier concentration of ~10<SUP>18</SUP>cm<SUP>-3</SUP>. We found that κ is proportional to T<SUP>-1</SUP> above 50K, indicating that phonons mainly contribute to the heat transport. Moreover, the electronic contribution is determined as ~4% of the measured κ from the Wiedemann-Franz law. The κ value is 0.132Wcm<SUP>-1</SUP>K<SUP>-1</SUP> at room temperature and is increased progressively at lower temperatures, becoming overall larger than that of the SrTiO<SUB>3</SUB> single crystal. Our results thus point out that BaSnO<SUB>3-δ</SUB> can be a good substrate for growing transparent electronic thin films with the perovskite structure.
Pmp22 mutant allele-specific siRNA alleviates demyelinating neuropathic phenotype in vivo
Lee, J.S.,Chang, E.H.,Koo, O.J.,Jwa, D.H.,Mo, W.M.,Kwak, G.,Moon, H.W.,Park, H.T.,Hong, Y.B.,Choi, B.O. Blackwell Science ; Academic Press 2017 Neurobiology of disease Vol.100 No.-
<P>Charcot-Marie-Tooth disease (CMT) is a genetic disorder that can be caused by aberrations in >80 genes. CMT has heterogeneous modes of inheritance, including autosomal dominant, autosomal recessive, X-linked dominant, and X-linked recessive. Over 95% of cases are dominantly inherited. In this study, we investigated whether regulation of a mutant allele by an allele-specific small interfering RNA (siRNA) can alleviate the demyelinating neuropathic phenotype of CMT. We designed 19 different allele-specific siRNAs for Trembler J (Tr-J) mice harboring a naturally occurring mutation (Leul6Pro) in Pmp22. Using a luciferase assay, we identified an siRNA that specifically and selectively reduced the expression level of the mutant allele and reversed the low viability of Schwann cells caused by mutant Pmp22 over-expression in vitro. The in vivo efficacy of the allele-specific siRNA was assessed by its intraperitoneal injection to postnatal day 6 of Tr-J mice. Administration of the allele-specific siRNA to Tr-J mice significantly enhanced motor function and muscle volume, as assessed by the rotarod test and magnetic resonance imaging analysis, respectively. Increases in motor nerve conduction velocity and compound muscle action potentials were also observed in the treated mice. In addition, myelination, as evidenced by toluidine blue staining and electron microscopy, was augmented in the sciatic nerves of the mice after allele-specific siRNA treatment. After validating suppression of the Pmp22 mutant allele at the mRNA level in the Schwann cells of Tr-J mice, we observed increased expression levels of myelinating proteins such as myelin basic protein and myelin protein zero. These data indicate that selective suppression of the Pmp22 mutant allele by non-viral delivery of siRNA alleviates the demyelinating neuropathic phenotypes of CMT in vivo, implicating allele-specific siRNA treatment as a potent therapeutic strategy for dominantly inherited peripheral neuropathies. (C) 2017 Elsevier Inc. All rights reserved.</P>
박용직,김경숙,김형섭,김대익,김성경,좌혜경,신무용,오상철,오현주,이찬용,조은선,나지현,Bahg, Y.J.,Kim, K.S.,Kim, H.S.,Kim, D.I.,Kim, S.K.,Jwa, H.K.,Shin, M.Y.,Oh, S.C.,Oh, H.J.,Lee, C.Y.,Cho, E.S.,Na, J.H. 한국전자통신연구원 2015 전자통신동향분석 Vol.30 No.1
최근 기술발전으로 컴퓨터 수준의 스마트 디바이스를 이용한 무선 인터넷 서비스 이용이 확대되고 있어 이에 따른 트래픽 증가를 효율적으로 수용하기 위한 새로운 이동통신시스템과 네트워크 구조 연구가 활발하게 진행되고 있다. 이러한 과정에 유선 IT 분야에서 선행적으로 진행된 SDN(Software Defined Network) 및 cloud & virtualization 기술들을 이동통신의 액세스 또는 서비스 플랫폼 환경에 적용하는 선도적인 연구개발이 진행되고 있어 SDN 및 cloud & virtualization 분야에 대한 최근 동향을 파악하고 이러한 기술들이 이동통신분야에 적용되는 다양한 사례들을 분석하여 새로운 형태의 네트워크 및 시스템 구조와 방식에 대한 연구개발 방향을 제시한다.
Plasma-assisted catalytic methanation of CO and CO<sub>2</sub> over Ni-zeolite catalysts
Jwa, E.,Lee, S.B.,Lee, H.W.,Mok, Y.S. Elsevier Scientific Pub. Co 2013 Fuel processing technology Vol.108 No.-
This work investigated the hydrogenation of carbon oxides (CO and CO<SUB>2</SUB>) into methane (''methanation'') in a dielectric barrier discharge (DBD) plasma reactor packed with Ni/zeolite pellets. For the present investigation, plasma-assisted catalytic hydrogenation and conventional catalytic hydrogenation were examined for a temperature range of 180-360<SUP>o</SUP>C by varying nickel loading up to 10wt.%. In the catalysis-alone case, the conversions of CO and CO<SUB>2</SUB> were less than 15%, regardless of nickel loading, indicating that thermal activation of the catalyst was not enough to achieve significant methanation rate for the temperature range explored. On the other hand, with nonthermal plasma created in the catalyst bed, a precipitous rise in the conversion of more than 95% was observed for either CO or CO<SUB>2</SUB>. It is inferred that reactive species generated in the plasma reactor can speed up the rate-determining-step of the catalytic hydrogenation. The catalyst characterizations by using X-ray diffraction and transmission electron microscope analyses revealed that Ni particles got smaller and were more uniformly dispersed over the support material after the plasma reaction, leading to increased conversion efficiencies of carbon oxides.
좌혜경,김승현,나지현,Jwa, H.K.,Kim, S.H.,Na, J.H. 한국전자통신연구원 2016 전자통신동향분석 Vol.31 No.5
모바일 기기와 데이터 이용량의 폭발적인 증가에 따라 제한된 자원으로 좀 더 빠르고 많은 용량을 처리하기 위한 다양한 기술 중 단위 면적당 용량 증대가 가능한 소형 셀 기술이 3G/4G 이동통신 시스템뿐만 아니라 5G 이동통신에서도 더욱 밀집한 셀 구성과 셀 소형화 형태로 연구 중에 있다. 이에 따라 셀 간 간섭을 제어하는 기술에 대한 연구도 꾸준히 진행되고 있다. 본고에서는 셀 간 간섭제어 기술에 대한 표준화 동향과 5G 이동통신에서의 간섭제어 기술에 대한 동향 및 방향에 대해 소개하고자 한다.