Urea와 K₂SO₄ 처리에 의한 복숭아 '미백도'에서 수확 시 과실의 무기성분 농도 및 과피색 변화

문병우,윤익구,문영지,남기웅,이영철,Moon, B.W.,Yoon, I.K.,Moon, Y.J.,Nam, K.W.,Lee, Y.C. 국립한국농수산대학교 교육개발센터 2013 현장농업연구지 = Journal of practical agricultural resear Vol.15 No.1

This study has been conducted to investigate the effect of Urea and K₂SO₄ treatment at stone hardening stage and 20 days before harvest on soil chemical properties, mineral nutrient concentration and quality of 'Mibaekdo' fruit peach. K concentration after Urea and K₂SO₄ treatment in soil was increased significantly by Urea 162g+K₂SO₄ 188g/tree(standard amount) treatment at stone hardening stage, K₂SO₄ 1.0% tree-spray, Urea 81g+K₂SO₄ 94g/tree(half amount), Urea 162g+K₂SO₄ 188g/tree and Urea 324g+K₂SO₄ 376g/tree(double amount) soil treatment before harvest 20 days compared to control. T-N, K and Ca concentration in leaf was increased significantly by all treatment. but Na concentration in leaf was increased by Urea 0.5% and K₂SO₄ 1.0% tree-spray treatment before harvest 20 days. T-N concentration in fruit skin was increased significantly by standard amount soil treatment, which decreased by K₂SO₄ 1.0% tree-spray and half amount soil treatment. T-N, K and Ca concentration in fruit flesh(1~10mm depth flesh from peel) were increased markedly by all treatment excepted Urea 0.5% tree-spray. The leaf weight at harvest was increased markedly by Urea 0.5% tree-spray, standard amount and double amount treatment before harvest 20 days. Fruit weight was increased significantly by standard amount compared to all treatment. Red fruit skin(Hunter a value) progress was effective by K₂SO₄ tree-spray, half amount and double amount treatment before harvest 20 days. Fruit SSC was increased significantly by Urea 0.5% and K₂SO₄ tree-spray before harvest 20 days, standard amount treatment at stone hardening stage compared to control.

Jacobi–Stirling numbers, Jacobi polynomials, and the left-definite analysis of the classical Jacobi differential expression

Everitt, W.N.,Kwon, K.H.,Littlejohn, L.L.,Wellman, R.,Yoon, G.J. Koninklijke Vlaamse Ingenieursvereniging 2007 Journal of computational and applied mathematics Vol.208 No.1

<P><B>Abstract</B></P><P>We develop the left-definite analysis associated with the self-adjoint Jacobi operator Ak(α,β), generated from the classical second-order Jacobi differential expression<SUB>ℓα,β,k</SUB>[y](t)=1<SUB>wα,β</SUB>(t)((-(1-t<SUP>)α+1</SUP>(1+t<SUP>)β+1</SUP><SUP>y′</SUP>(t)<SUP>)′</SUP>+k(1-t<SUP>)α</SUP>(1+t<SUP>)β</SUP>y(t))(t∈(-1,1)),in the Hilbert space Lα,β2(-1,1)≔<SUP>L2</SUP>((-1,1);<SUB>wα,β</SUB>(t)), where <SUB>wα,β</SUB>(t)=(1-t<SUP>)α</SUP>(1+t<SUP>)β</SUP>, that has the Jacobi polynomials {Pm(α,β)}m=0∞ as eigenfunctions; here, α,β>-1 and <I>k</I> is a fixed, non-negative constant. More specifically, for each n∈N, we explicitly determine the unique left-definite Hilbert–Sobolev space Wn,k(α,β)(-1,1) and the corresponding unique left-definite self-adjoint operator Bn,k(α,β) in Wn,k(α,β)(-1,1) associated with the pair (Lα,β2(-1,1),Ak(α,β)). The Jacobi polynomials {Pm(α,β)}m=0∞ form a complete orthogonal set in each left-definite space Wn,k(α,β)(-1,1) and are the eigenfunctions of each Bn,k(α,β). Moreover, in this paper, we explicitly determine the domain of each Bn,k(α,β) as well as each integral power of Ak(α,β). The key to determining these spaces and operators is in finding the explicit Lagrangian symmetric form of the integral composite powers of <SUB>ℓα,β,k</SUB>[·]. In turn, the key to determining these powers is a double sequence of numbers which we introduce in this paper as the <I>Jacobi–Stirling numbers</I>. Some properties of these numbers, which in some ways behave like the classical Stirling numbers of the second kind, are established including a remarkable, and yet somewhat mysterious, identity involving these numbers and the eigenvalues of Ak(α,β).</P>

자돈 설사병 예방백신의 개발

윤여창,김태종,이중복,이기수,윤화중,황도윤 건국대학교 동물자원연구센터 1998 動物資源硏究誌 Vol.19 No.-

Exteroxigenic Escherichia coli(ETEC) is a major cause of diarrhea in neonatal and weaning piglets. The incidence of ETEC in piglets with diarrhea was investigated by detecting the K88, K99 and 987P antigens from the isolated strains of Escherichia coli(E.coli). This study was carried out to investigate the biochemical characteristic, antibiotic susceptibililty and development of E.coli vaccine against diarrheal disease in piglets. The results obtained from this study were summarized as follows: 1. 24 strains of K88 positive ETEC were isolated from 64 E.coli. 2. In antibiotic susceptibility test, K88 positive ETEC showed high sensitivity to imipenem but resistance to penicillin and vancomycin. 3. 16 strains were positive for heat labile toxin, but not shown hemolysis. 4. The purified pilus of K88 positive ETEC had molecular weight of 28.5 KDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. 5. Serum antibody responses to immunogen in guinea pigs given experimental oil and gel emulsion vaccine peaked at 4 and 6 week after vaccination. 6. In the mean hemagglutination inhibition titer to antigens of guinea pigs, oil emulsion pili vaccine was 1:1280 and those given gel emulsion pili vaccine was 1:640 respectively. 7. Agglutination titers in pregnant gilts given the oil emulsion pili vaccine were significantly higher compared to those of control groups. 8. The protective efficacy of the oil emulsion pili vaccine was 77.3% under field condition.

국내 금융산업의 Y2K 문제인식과 대응논리

윤용근 국민대학교 정보기술연구소 2001 정보기술연구 Vol.7 No.-

Y2K문제 해결 완료는 분명히 문제가 있는 선언이다. 본 연구는 첫째, Y2K문제에 대한 우리의 인식이 얼마나 왜곡되고 파편화 된 이해 속에 있는 가를 직시하고 늦은 감이 있지만 이제는 충분히 다른 시각을 가질 필요성이 있다는 점과, 둘째, 얼마 남지 않은 기간동안이지만 철저한 준비와 대응책을 마련하는 것이 그렇게 하지 않는 것보다 무조건 나쁘지 않다는 점을 주지시키기 위해서 준비된 것이다. 설령 그것이 현실 속에서 발현되든 또는 발현되지 않든 간에 Y2K문제에 대한 우리의 인식전환과 유비무환의 자세를 가다듬을 수 있는 계기가 되길 기대한다. Y2K문제는 단순한 프로그램상의 날자 인식 오류에 불과하지만 이것이 현실 속에서 얼마나 커다란 문제를 야기 시킬 수도 있는가를 정확하게 이해할 필요가 있다. 본 연구는 금융권을 중심으로 표본을 추출하여 그것에 대한 실증적 분석과 사례를 통하여 이를 입증하고자 노력했다. Y2K문제는 그 성격상 100% 달성이란 존재할 수 없는 확률 분포적인 성격의 문제이다. 즉 우리가 주변에서 흔히 볼 수 있듯이 Y2K문제 100% 달성이란 현실적으로 존재할 수 없으며, 지금부터 언제든지 크고 작은 문제를 일으킬 수 있는 소지가 충분하다는 사실을 인식하고, 그에 대한 대응 체제를 확립하는 것이 이 시점 매우 절실하다는 것이다. 본 연구보고서는 실증적 분석 모델로 삼았던 특정 회사가 단지 특정 회사만의 문제가 아??

Search for theH-dibaryon resonance inC12(K−,K+ΛΛX)

Yoon, C. J.,Akikawa, H.,Aoki, K.,Fukao, Y.,Funahashi, H.,Hayata, M.,Imai, K.,Miwa, K.,Okada, H.,Saito, N.,Sato, H. D.,Shoji, K.,Takahashi, H.,Taketani, K.,Asai, J.,Kurosawa, M.,Ieiri, M.,Hayakawa, T. American Physical Society 2007 PHYSICAL REVIEW C - Vol.75 No.2

사료내 라이신 및 전해질 균형 ( EB : Na + K-Cl ) 수준이 이유자돈의 성장 , 혈액성상 , 뇨성상 및 영양소 이용율에 미치는 영향

박재환(J . H . Park),한인규(In K . Han),최윤재(Y . J . Choi),윤철희(C . H . Yoon) 한국영양사료학회 1993 韓國營養飼料學會誌 Vol.17 No.6

Telomere length, TERT and shelterin complex proteins in hepatocellular carcinomas expressing ''stemness''-related markers

Kim, H.,Yoo, J.E.,Cho, J.Y.,Oh, B.K.,Yoon, Y.S.,Han, H.S.,Lee, H.S.,Jang, J.J.,Jeong, S.H.,Kim, J.W.,Park, Y.N. Elsevier Science Publishers 2013 Journal of hepatology Vol.59 No.4

Background & Aims: Hepatocellular carcinomas (HCCs) expressing ''stemness''-related markers have been associated with aggressive biological behavior and poor prognosis. We examined the relationship between ''stemness''-related protein expression and telomere length, hTERT and shelterin complex protein expression and chromosomal instability. Methods: Quantitative fluorescent in situ hybridization for telomere length, immunohistochemistry for K19, EpCAM, CD133, c-kit, HepPar1, hTERT, TRF1, TRF2, POT1, RAP1 and TPP1, and TUNEL assay were performed in 137 HCCs, and array comparative genomic hybridization was performed with 24 HCCs. Results: Telomeres were significantly longer in HCCs expressing ''stemness''-related proteins (K19: p<0.001, EpCAM: p=0.002, CD133: p=0.002). On analyzing different tumor cells within EpCAM-expressing HCCs, EpCAM-positive tumor cells showed longer telomeres (1.329+/-0.246) compared to EpCAM-negative tumor cells (0.996+/-0.381) within the same HCCs (p=0.031). Telomeres were significantly longer in HCCs expressing hTERT (p=0.048) and RAP1 proteins (p=0.031). K19-expressing HCCs expressed hTERT (p=0.002), TRF2 (p=0.001) and TPP1 (p=0.013) more frequently compared to K19-negative HCCs. EpCAM-positivity was associated with more frequent hTERT (p=0.028), TPP1 (p=0.017), TRF2 (p=0.027) and POT1 (p=0.004) expression. Copy number alterations were more frequent in K19 and EpCAM-expressing HCCs compared to HCCs without these markers (K19: p=0.038, EpCAM: p=0.009). HCCs with longer telomeres were associated with a shorter overall (p=0.019) and disease-free survivals (p=0.049), and decreased disease-free survivals were seen in TRF2-positive HCCs (p=0.018). Conclusions: HCCs expressing ''stemness''-related proteins are characterized by increased telomere length, increased expression of hTERT and shelterin complex proteins, and increased chromosomal instability compared to conventional HCCs. Longer telomeres and TRF2 expression in HCCs are associated with poor patient outcomes.

Association of Sequence Variations in DGAT 1 Gene with Economic Traits in Hanwoo (Korea Cattle)

Kong, H.S.,Oh, J.D.,Lee, J.H.,Yoon, D.H.,Choi, Y.H.,Cho, B.W.,Lee, H.K.,Jeon, G.J. Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.6

The effects of diacylglycerol O-acyltransferase (DGAT1) candidate gene polymorphism on the economic traits of Hanwoo were studied. Through sequencing analysis, two polymorphism sites at K232A and T11993C were established and were analyzed by PCR-RFLP. The PCR-RFLP analysis for K232A showed that the frequencies of alleles K and A were 0.75 and 0.25, respectively, and the frequencies of genotypes for K/K, K/A and A/A were estimated as 0.509, 0.491 and 0, respectively. In the PCR-RFLP analysis for T11993C, we found allele frequencies of 0.773 and 0.227 for T and A, respectively, and 0.546, 0.454 and 0 for the T/T, T/C and C/C genotype frequencies, respectively. No significant effects on economic traits in Hanwoo were found in the separate analysis of K232A and T11993C polymorphisms, but the interaction between K232A and T11993C showed a significant effect (p<0.005) on marbling score. The DGAT1 candidate gene was found to have a significant effect not only on milk yield and component traits but also on the metabolism of intramuscular fat.

Control of phonon transport by the formation of the Al2O3 interlayer in Al2O3-ZnO superlattice thin films and their in-plane thermoelectric energy generator performance

Park, N. W.,Ahn, J. Y.,Park, T. H.,Lee, J. H.,Lee, W. Y.,Cho, K.,Yoon, Y. G.,Choi, C. J.,Park, J. S.,Lee, S. K. Royal Society of Chemistry 2017 Nanoscale Vol.9 No.21

<P>Recently, significant progress has been made in increasing the figure-of-merit (ZT) of various nanostructured materials, including thin-film and quantum dot superlattice structures. Studies have focused on the size reduction and control of the surface or interface of nanostructured materials since these approaches enhance the thermopower and phonon scattering in quantum and superlattice structures. Currently, bismuth-tellurium-based semiconductor materials are widely employed for thermoelectric (TE) devices such as TE energy generators and coolers, in addition to other sensors, for use at temperatures under 400 K. However, new and promising TE materials with enhanced TE performance, including doped zinc oxide (ZnO) multilayer or superlattice thin films, are also required for designing solid-state TE power generating devices with the maximum output power density and for investigating the physics of in-plane TE generators. Herein, we report the growth of Al2O3/ZnO (AO/ZnO) superlattice thin films, which were prepared by atomic layer deposition (ALD), and the evaluation of their electrical and TE properties. All the in-plane TE properties, including the Seebeck coefficient (S), electrical conductivity (sigma), and thermal conductivity (kappa), of the AO/ZnO superlattice (with a 0.82 nm-thick AO layer) and AO/ZnO films (with a 0.13 nm-thick AO layer) were evaluated in the temperature range 40-300 K, and the measured S, s, and. were -62.4 and -17.5 mu V K-1, 113 and 847 (Omega cm)(-1), and 0.96 and 1.04 W m(-1) K-1, respectively, at 300 K. Consequently, the in-plane TE ZT factor of AO/ZnO superlattice films was found to be similar to 0.014, which is approximately two times more than that of AO/ZnO films (ZT of similar to 0.007) at 300 K. Furthermore, the electrical power generation efficiency of the TE energy generator consisting of four couples of n-AO/ZnO superlattice films and p-Bi0.5Sb1.5Te3 (p-BST) thin-film legs on the substrate was demonstrated. Surprisingly, the output power of the 100 nm-thick n-AO/ZnO superlattice film/p-BST TE energy generator was determined to be similar to 1.0 nW at a temperature difference of 80 K, corresponding to a significant improvement of similar to 130% and similar to 220% compared to the 100 nm-thick AO/ZnO film/p-BST and n-BT/p-BST film generators, respectively, owing to the enhancement of the TE properties, including the power factor of the superlattice film.</P>

장내바이러스성 질환 예방을 위한 공통항원 분석과 조기 진단법 및 백신 후보물질 개발에 관한 연구

윤재득,지영미,김기순,천두성,이윤성,정윤석,송철용,이광호,나병구 국립보건연구원 1999 국립보건원보 Vol.36 No.-