• Title/Summary/Keyword: lTU

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New Records of Marine Fishes, Arius maculatus and Luciogobius saikaiensis from Korea (한국산 어류 2 미기록종, Arius maculatus와 Luciogobius saikaiensis)

  • 김익수;최승호
    • Animal Systematics, Evolution and Diversity
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    • v.13 no.4
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    • pp.279-284
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    • 1997
  • Arius maculatus (Thunberg) of the family Ariidae collected from Wando, Chollanam-do Province is a new family and genus to the fish fauna in Korea. Luciogobius saikaiensis D tu of the family Gobiidae collected from Haenam, Chollanam-do Province is also a new record. Their diagnostic characters, distribution, remarks and photos of each species are given.

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GROWTH OF SOLUTIONS TO LINEAR DIFFERENTIAL EQUATIONS WITH ENTIRE COEFFICIENTS OF [p, q]-ORDER IN THE COMPLEX PLANE

  • Biswas, Nityagopal;Tamang, Samten
    • Communications of the Korean Mathematical Society
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    • v.33 no.4
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    • pp.1217-1227
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    • 2018
  • In the paper, we study the growth and fixed point of solutions of high order linear differential equations with entire coefficients of [p, q]-order in the complex plane. We improve and extend some results due to T. B. Cao, J. F. Xu, Z. X. Chen, and J. Liu, J. Tu, L. Z. Shi.

Endogenous Proteinaceous Inhibitor for Protein Methylation Reactions

  • Paik, Woon-Ki;Lee, Hyang-Woo;Kim, Sangduk
    • Archives of Pharmacal Research
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    • v.10 no.3
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    • pp.193-196
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    • 1987
  • Protein methylation occurs ubiquitously in nature and involves N-methylation of lysine, arginine, histidine, alanine, proline and glutamine, O-methylesterfication o dicarboxylic acids, and S-methylation of cysteine and methionine. In nature, methylated amino acids accur in highly specialized proteins such as histones, flagella proteins, myosin, actin, ribosomal proteins. hn RNA-bound protein, HMG-1 and HMG-2 protein, opsin, EF-Tu, EF-$1\alpha$, porcine heart citrate synthase, calmodulin, ferredoxin, $1\alpha$-amylase, heat shock protein, scleroderma antigen, nucleolar protein C23 and IF-3l.

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DISCRETE EVOLUTION EQUATIONS ON NETWORKS AND A UNIQUE IDENTIFIABILITY OF THEIR WEIGHTS

  • Chung, Soon-Yeong
    • Journal of the Korean Mathematical Society
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    • v.53 no.5
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    • pp.1133-1148
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    • 2016
  • In this paper, we first discuss a representation of solutions to the initial value problem and the initial-boundary value problem for discrete evolution equations $${\sum\limits^l_{n=0}}c_n{\partial}^n_tu(x,t)-{\rho}(x){\Delta}_{\omega}u(x,t)=H(x,t)$$, defined on networks, i.e. on weighted graphs. Secondly, we show that the weight of each link of networks can be uniquely identified by using their Dirichlet data and Neumann data on the boundary, under a monotonicity condition on their weights.

An investigation on the in si.tu measurement of the oil-concentration

  • Kim, Chang-Nyeun;Park, Young-Moo
    • International Journal of Air-Conditioning and Refrigeration
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    • v.9 no.1
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    • pp.20-28
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    • 2001
  • In order to predict thermodynamic performance of refrigeration system, it is required to know the oil concentration of the refrigerant/oil mixture. The current method is to extract the working mixture and then to measure the oil weight. In this study, oil concentration is measured in si.tu way without any extraction of the working fluid. Based on the measurement, a working equation is presented as follows, C=a +b x t +c x $t^2$ +(d + e x t +f x $t^2$) x SG. C is oil concentration, t is temperature($^{\circ}C). SG Is specific gravity of mixture and a~f is coefficients The oil concentration ranges over 0~l2 wt% and the temperature ranges over 20~50$^{\circ}C. The specific gravity and temperature are measured using the on-line densimeter and thermometer. This working equation enables to predict the oil concentration without any extraction of the mixture. This equation can be applied for R-12/Naphthenic oil and R-134a/P0E oil liquid mixtures.

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An investigation on the in si.tu measurement of the oil-concentration

  • Kim, Chang-Nyeun;Park, Young-Moo
    • International Journal of Air-Conditioning and Refrigeration
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    • v.8 no.2
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    • pp.80-88
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    • 2000
  • In order to predict thermodynamic performance of refrigeration system, it is required to know the oil concentration of the refrigerant/oil mixture. The current method is to extract the working mixture and then to measure the oil weight. In this study, oil concentration is measured in si.tu way without any extraction of the working fluid. Based on the measurement, a working equation is presented as follows, C=a +b x t +c x $t^2$ +(d + e x t +f x $t^2$) x SG. C is oil concentration, t is temperature($^{\circ}C). SG Is specific gravity of mixture and a~f is coefficients The oil concentration ranges over 0~l2 wt% and the temperature ranges over 20~50$^{\circ}C. The specific gravity and temperature are measured using the on-line densimeter and thermometer. This working equation enables to predict the oil concentration without any extraction of the mixture. This equation can be applied for R-12/Naphthenic oil and R-134a/P0E oil liquid mixtures.

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Quantitative Proteogenomics and the Reconstruction of the Metabolic Pathway in Lactobacillus mucosae LM1

  • Pajarillo, Edward Alain B.;Kim, Sang Hoon;Lee, Ji-Yoon;Valeriano, Valerie Diane V.;Kang, Dae-Kyung
    • Food Science of Animal Resources
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    • v.35 no.5
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    • pp.692-702
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    • 2015
  • Lactobacillus mucosae is a natural resident of the gastrointestinal tract of humans and animals and a potential probiotic bacterium. To understand the global protein expression profile and metabolic features of L. mucosae LM1 in the early stationary phase, the QExactiveTM Hybrid Quadrupole-Orbitrap Mass Spectrometer was used. Characterization of the intracellular proteome identified 842 proteins, accounting for approximately 35% of the 2,404 protein-coding sequences in the complete genome of L. mucosae LM1. Proteome quantification using QExactiveTM Orbitrap MS detected 19 highly abundant proteins (> 1.0% of the intracellular proteome), including CysK (cysteine synthase, 5.41%) and EF-Tu (elongation factor Tu, 4.91%), which are involved in cell survival against environmental stresses. Metabolic pathway annotation of LM1 proteome using the Kyoto Encyclopedia of Genes and Genomes (KEGG) database showed that half of the proteins expressed are important for basic metabolic and biosynthetic processes, and the other half might be structurally important or involved in basic cellular processes. In addition, glycogen biosynthesis was activated in the early stationary phase, which is important for energy storage and maintenance. The proteogenomic data presented in this study provide a suitable reference to understand the protein expression pattern of lactobacilli in standard conditions

Five Newly Collected Turnip Mosaic Virus (TuMV) Isolates from Jeju Island, Korea are Closely Related to Previously Reported Korean TuMV Isolates but Show Distinctive Symptom Development

  • Hu, Wen-Xing;Kim, Byoung-Jo;Kwak, Younghwan;Seo, Eun-Young;Kim, Jung-Kyu;Han, Jae-Yeong;Kim, Ik-Hyun;Lim, Yong Pyo;Cho, In-Sook;Domier, Leslie L;Hammond, John;Lim, Hyoun-Sub
    • The Plant Pathology Journal
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    • v.35 no.4
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    • pp.381-388
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    • 2019
  • For several years, temperatures in the Korean peninsula have gradually increased due to climate change, resulting in a changing environment for growth of crops and vegetables. An associated consequence is that emerging species of insect vector have caused increased viral transmission. In Jeju Island, Korea, occurrences of viral disease have increased. Here, we report characterization of five newly collected turnip mosaic virus (TuMV) isolates named KBJ1, KBJ2, KBJ3, KBJ4 and KBJ5 from a survey on Jeju Island in 2017. Full-length cDNAs of each isolate were cloned into the pJY vector downstream of cauliflower mosaic virus 35S and bacteriophage T7 RNA polymerase promoters. Their fulllength sequences share 98.9-99.9% nucleotide sequence identity and were most closely related to previously reported Korean TuMV isolates. All isolates belonged to the BR group and infected both Chinese cabbage and radish. Four isolates induced very mild symptoms in Nicotiana benthamiana but KBJ5 induced a hypersensitive response. Symptom differences may result from three amino acid differences uniquely present in KBJ5; Gly(382)Asp, Ile(891)Val, and Lys(2522)Glu in P1, P3, and NIb, respectively.

Studies on the Synthesis and Antineoplastic Activities of Potential Antitumor Agents. III. Screening Test of Antitumor Activities of a few plant Extracts against Experimental Tu mors (제암성성질의 합성및 항종양시험에 관한 연구 III 수종한국산식물의 Ethanol Extract의 항종양시험)

  • 정보섭;정원근;김중협;천문우
    • YAKHAK HOEJI
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    • v.14 no.3_4
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    • pp.51-53
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    • 1970
  • Alcohol extracts of six plant namely Coix agrestis L$_{OUREIRO}$, Chloranthus Japonicus (Siebi) N$_{AKAI}$, Ajuga Spectabilis N$_{AKAI}$, Juglans mandsuria Max., Cirsium Macki var Ussuriense $K_{ITA}$ and Sasamorpha Purpurascense (Hack) N$_{AKAI}$ were subjected to the screening tests for anti-tumor activities against SN-36 Leukemia, Sarcoma 180 and Ehrlich ascites carcinoma. Of the six extracts, Ajuga Spectabilis N$_{AKAI}$ and Coix agrestis L$_{OUREIRO}$ were found to be potential in survival effect of tumor transplanted mice.

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