• Title/Summary/Keyword: Le

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Inheritance between Le Gene and Ti Gene in Soybean (Glycine max L.)

  • Lee, Kyoung Ja;Park, Mo Se;Sung, Mi Kyung;Kim, Myung Sik;Chung, Jong Il
    • Korean Journal of Breeding Science
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    • v.40 no.2
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    • pp.97-100
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    • 2008
  • Lectin protein and Kunitz trypsin inhibitor (KTI) protein of mature soybean seed are a main antinutritional factor in soybean seed. The Le gene controls a lectin protein and Ti gene controls the KTI protein in soybean. Ti locus has been located on linkage group 9 in the classical linkage map of soybean. Position of Le locus on linkage map was not identified. Genetic relationship between Ti locus and Le locus could be useful in soybean breeding program for the genetic elimination of these factors. The objective of this study was to determine the independent inheritance or linkage between Ti locus and Le locus in soybean seed. Two $F_2$ populations were developed from three parents (Gaechuck#1, T102, and PI548415). The $F_1$ seeds from Gaechuck#1 (titiLeLe) ${\times}$ T102 (TiTilele) and Gaechuck#1 (titiLeLe) ${\times}$ PI548415 (TiTilele) were obtained. The lectin and KTI protein were analysed from $F_2$ seeds harvested from the $F_1$ plants to find independent assortment or linkage between Ti locus and Le locus. The segregation ratios of 3 : 1 for Le locus (129 Le_ : 44 lele) and Ti locus (132 Ti_ : 41 titi) and were observed. The segregation ratios of 9 : 3 : 3 : 1 (95 Le_Li_ : 34 Le_titi: 37 leleTi_ : 7 leletiti) between Le gene and Ti gene in $F_2$ seeds were observed. This data showed that Ti gene was inherited independently with the Le gene in soybean. These results will be helpful in breeding program for selecting the line with lacking both KTI and lectin protein in soybean.

Expression of lewis antigen in gastric mucosa of children with Helicobacter pylori infection (Helicobacter pylori에 감염된 소아의 위점막에서 Lewis 항원의 발현)

  • Chung, Ju-Young;Lim, Seong Jig;Han, Tae Hee
    • Pediatric Infection and Vaccine
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    • v.14 no.1
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    • pp.97-103
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    • 2007
  • Purpose : Lewis antigen has been known to have a role in the attachment of H. pylori to the gastric mucosa, but its expression pattern in children with H. pylori infection is still unclear. The recently described blood group antigen-binding adhesin BabA is known to mediate adherence of H. pylori to Lewis B receptors on gastric epithelium. We investigated the expression of Lewis antigen in gastric mucosa of Korean children with H. pylori infection. Methods : The expression of Lewis A ($Le^a$), B ($Le^b$), X ($Le^x$), and Y ($Le^y$) was evaluated by immunohistochemistry in H. pylori positive biopsy specimens from 35 children (antral gastritis in 30, peptic ulcer in 5) and in H. pylori negative specimens from 19 children. PCR assays for cagA and babA2 gene of H. pylori were performed. Results : We confirmed the expression of $Le^a$ in 60%, $Le^b$ in 97%, $Le^x$ in 100%, and $Le^y$ in 100% of the superficial epithelium of the 35 H. pylori positive children. In H. pylori negative patients, $Le^a$, $Le^b$, $Le^x$, and $Le^y$ expression was 52%, 100%, 89%, and 100%, respectively. The cagA gene was detected in 65% and babA2 gene in 25% of 35 patients. No differences in neutrophil activity and chronic inflammation were found according to the presence of cagA and babA2 genes in H. pylori. Conclusion : $Le^b$, $Le^x$ and $Le^y$ antigen were highly expressed in gastric mucosa of Korean children, but they were not associated with the status of H. pylori infection and the positivity of babA2 gene. Further studies for other mucosal receptors and toxins are needed to define the immune responses to H. pylori infection in gastric mucosa of Korean children.

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Effects of a lipid-encapsulated zinc oxide supplement on growth performance and intestinal morphology and digestive enzyme activities in weanling pigs

  • Jang, Insurk;Kwon, Chang Hoon;Ha, Duck Min;Jung, Dae Yun;Kang, Sun Young;Park, Man Jong;Han, Jeong Hee;Park, Byung-Chul;Lee, Chul Young
    • Journal of Animal Science and Technology
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    • v.56 no.8
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    • pp.29.1-29.6
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    • 2014
  • This study compared the effects of varying lipid content and dietary concentration of a lipid-encapsulated (LE) ZnO product to those of native ZnO and thereby to find insights into optimal lipid coating and dosage of the Zn supplement. A total of 192 21-d-old weanling pigs were allotted to 48 pens, after which each six pens received a ZnO-free basal diet supplemented with 125 ppm ZnO (100 ppm Zn; BASAL), 2,500 ppm Zn as native ZnO (HIGH), or 100 or 200 ppm Zn as LE ZnO (LE-100 or LE-250) containing 8%, 10%, or 12% lipid [LE-8%, LE-10%, or LE-12%, respectively; $2{\times}3$ factorial arrangement within the LE-ZnO diets (LE-ALL)] for 14 d. Forty pigs were killed at the end for histological and biochemical examinations. None of ADG, ADFI, gain:feed, and fecal consistency score differed between the LE-ALL and either of the BASAL and HIGH groups. Hepatic and serum Zn concentrations were greater (p <0.05) in the HIGH vs. LE-ALL group, but did not differ between LE-ALL and BASAL, between LE-100 and -250, or among LE-8%, -10%, and -12% groups. Villus height (VH), crypt depth (CD), and the VH:CD ratio in the duodenum, jejunum, and ileum did not differ between the LE-ALL and either of the BASAL and HIGH groups, except for a greater CD in the duodenum in the LE-ALL vs. HIGH group. Additionally, VH and CD in the duodenum and VH:CD in the jejunum were greater in the LE-250 vs. LE-100 group. Specific activities of sucrase, maltase, and leucine aminopeptidase in these intestinal regions and those of amylase and trypsin in the pancreas were not influenced by the lipid content or dietary concentration of LE ZnO and also did not differ between the LE-ALL and either of the BASAL and HIGH groups, except for a greater pancreatic amylase activity in the former vs. HIGH group. In conclusion, the present results indicate that the LE ZnO, regardless of its lipid percentage or supplementation level examined in this study, has no significant effect on growth performance, fecal consistency, or digestive enzyme activities of weanling pigs under the experimental conditions.

Recherche sur I'esthetique du Costume d'apres les peintures francaises du X IVe ex X Ve siecles (프랑스 14.15세기 회화에 표현된 복식의 미적 고찰)

  • 김혜연
    • Journal of the Korean Society of Costume
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    • v.22
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    • pp.243-262
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    • 1994
  • L'niteret majeur de cette etude reside dans I'interpretation des images vestimentaired au Moyen-Age en France sur le plan esthetique et religieux. Comme d'interessantes hypotheses de tra-vail les images religieuses temoignent de la transformation de I'esprit religieux, artistique mais aussistyle de vie, de la mode et du gout a l'epoque segeuriale. D'apres les icons de la ste. Vierge, on peut y noter de multiples sources d'influence. le style autochtone fancais-I'art courtois le style gothique intenational les types de repre'sentation siennoise le Realisme neerlandais le Naturalisme italien Comme le role du vetement d'apres les icons de la ste. Marie le Moye n d'identification de la ste. Marie L'Objet de connexion entre les figures et I'architecture L'Element decoratif dans la peinture L'Intermediaire expressif et approfondi du theme On peut aussi dresser I'iconographie et le symbolisme vestimentairedans le monde chretien.

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Improved Understanding of LeTID of Single-crystalline Silicon Solar Cell with PERC

  • Kim, Kwanghun;Baik, Sungsun;Park, Jaechang;Nam, Wooseok;Jung, Jae Hak
    • Current Photovoltaic Research
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    • v.6 no.4
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    • pp.94-101
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    • 2018
  • Light elevated temperature induced degradation (LeTID) was noted as an issue in multi-crystalline silicon solar cells (MSSC) by Ram speck in 2012. In contrast to light induced degradation (LID), which has been researched in silicon solar cells for a long time, research about both LeTID and the mechanism of LeTID has been limited. In addition, research about LeTID in single-crystalline silicon solar cells (SSSC) is even more limited. In order to improve understanding of LeTID in SSSC with a passivated emitter rear contact (PERC) structure, we fabricated four group samples with boron and oxygen factors and evaluated the solar cell characteristics, such as the cell efficiency, $V_{oc}$, $I_{sc}$, fill factor (FF), LID, and LeTID. The trends of LID of the four group samples were similar to the trend of LeTID as a function of boron and oxygen.

Effect of Ethanol Extracts in Pinus densiflora, Lithospermum erythrorhizon on the Lipid Oxidation of Oil Emulsion (식물체(솔잎, 자초)의 에탄올 추출물이 유탁액의 지방산화에 미치는 영향)

  • 김수민;조영석;성삼경
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.28 no.5
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    • pp.984-989
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    • 1999
  • This study was carried out to investigate the effects of ethanol extracts on lipid oxidation of oil emulsion. The results are as follows; The scavenging ability of plant extracts for hydroxyl radical was found, and plant extracts played an important role as a strong chelating agents to bind iron if Fe2+ ion exists in oil emulsion. Pinus densiflora(PD), Lithospermum erythrorhizon(LE) and PD+LE acted as strong chelating agents to bind iron to reduce lipid oxidation in oil emulsion. The content of Fe2+ ion in ethanol extracts from LE and PD+LE were significantly higher(p<0.05) than that of ethanol extracts from PD. The content of total iron has same tendency. The ascorbic acid content of PD(16.36ppm) was slightly higher than those of LE(13.08ppm). Electron donating ability of PD was significantly higher(p<0.05) than those of LE. However, the superoxide(SOD) like ability of LE showed a little higher than those of LE and PD+LE, which means the strong antioxidant activity of LE. The nitrite scavenging effects were dependent on pH value, however, they decreased as pH value increased. Especially, they almost didn't show the nitrite scavenging effect in pH 6.0. In conclusion, the PD and LE extracts may be used as natural antioxidant sources to reduce lipid oxidation in oil emulsion.

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Effects of Loquat (Eriobotrya japonica Lindl.) Leaf Extract with or without Ascorbic Acid on the Quality Characteristics of Semi-Dried Restructured Jerky during Storage

  • Kim, Se-Myung;Kim, Tae-Kyung;Kang, Min-Cheol;Cha, Ji Yoon;Yong, Hae In;Choi, Yun-Sang
    • Food Science of Animal Resources
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    • v.42 no.4
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    • pp.566-579
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    • 2022
  • Deterioration of jerky during storage is a major concern; this is usually combated with natural or synthetic antioxidants. This study aimed to evaluate the quality characteristics of semi-dried restructured jerky with and without loquat leaf extract (LE) powder and ascorbic acid (AA) during storage for 180 days. The jerkies were formulated with 0%, 0.15%, and 0.3% LE and/or 0.05% AA (Control, no antioxidant; AA, 0.05% AA; LE 0.15, 0.15% loquat LE; LE 0.15-AA, 0.15% loquat LE+0.05% AA; LE 0.3, 0.3% loquat LE; LE0.3-AA, 0.3% loquat LE+0.05% AA). LE is a phenolic compound, whose 1,1-diphenyl-2-picrylhydarzyl radical scavenging activity and metal chelating activity were found to be higher than AA. All antioxidant combinations having higher LE concentration and containing AA were effective in delaying protein and lipid oxidation compared to the control or AA. At the end of storage period, LE 0.15-AA and AA had higher CIE a* and lower shear force than the control. Therefore, the combination of 0.15% LE and 0.05% AA can result in reduced protein and lipid oxidation without any negative effect on the quality characteristics of semi-dried restructured jerky.

Large Eddy Simulaion of Turbulent Flows (난류유동의 대 와동 모사(LES))

  • 양경수
    • Journal of the KSME
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    • v.34 no.9
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    • pp.698-704
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    • 1994
  • 이 글에서는 난류유동의 수치모사 기법으로서 최근 주목을 받고 있는 LES에 대해서 살펴보았다. LES의 개념은 공간에서의 여고에 근거를 두고 있으며 따라서 난류모델은 작은 스케일의 유동 구조에만 국한된다. LES의 이러한 장점은 DNS에 좀도 가까운 난류모델링의 가능성을 의미한다. 또한 그간 발전된 LES의 기법들에 대해 고찰해보았으며 LES는 DNS의 처선책으로서 난류유 동을 예측하기 위한 도구로서 그 전망은 매우 밝다.

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Phenotypic and molecular characteristics of second clone (T0V2) plants of the LeLs-antisense gene-transgenic chrysanthemum line exhibiting non-branching (무측지성 국화 형질전환 계통 영양번식 제2세대의 형태적 및 분자생물학적 특성)

  • Lee, Su Young;Kim, Jeong-Ho;Cheon, Kyeong-Seong;Lee, Eun Kyung;Kim, Won Hee;Kwon, O Hyeon;Lee, Hye Jin
    • Journal of Plant Biotechnology
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    • v.40 no.4
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    • pp.192-197
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    • 2013
  • This study examined the phenotypic and molecular characteristics of the $2^{nd}$ clone ($T_0V_2$) plants of LeLs-antisense gene-transgenic chrysanthemum line (LeLs80) that exhibited non-branching, proving the relevance of these characteristics as a factor for use in environmental risk assessment. Results of the Southern blot analysis showed that three copies of the LeLs-antisense gene were introduced into the transgenic line, and northern analysis showed that the transcripted gene was normally expressed in the transgenic line. A flanking T-DNA sequencing method was used to determine that sequences of 184 and 464 bps flanked the LeLs-antisense gene in the transgenic line. These sequences, respectively, matched the 35S promoter for expression of the npt II gene and the NOS terminator for expression of the LeLs-antisense gene within the pCAMBIA 2300 vector.

Effects of Supplementation of Mixed Cassava (Manihot esculenta) and Legume (Phaseolus calcaratus) Fodder on the Rumen Degradability and Performance of Growing Cattle

  • Thang, C.M.;Sanh, M.V.;Wiktorsson, H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.21 no.1
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    • pp.66-74
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    • 2008
  • Two experiments were conducted to assess the effect of replacing a conventional concentrate with mixed cassava (Manihot esculenta) foliage and legume (Phaseolus calcaratus) foliage. In Exp. 1, three rumen fistulated crossbred cows were used for in sacco rumen degradability studies. In vitro gas production was also studied. In Exp. 2, 11 crossbred F2 heifers (Red Sindhi$\times$Holstein Friesian), with initial live weight of $129{\pm}6kg$ and aged six months, were allocated in a Completely Randomized Design (CRD) to evaluate a mixture (ratio 3:1) of cassava and legume foliage (CA-LE feed) as a protein source compared to a traditional concentrate feed (Control) in diets based on fresh elephant grass (Pennisetum purpureum) and urea treated rice straw ad libitum. The Control feed was replaced by the CA-LE feed at levels of 0% (Control), 40% (CA-LE40), and 60% (CA-LE60) based on dry matter (DM). The in sacco degradation of CA-LE feed was higher than Control feed (p<0.05). After 48 h incubation the degradation of CA-LE feed and Control feed was 73% vs. 58% of DM and 83% vs. 65% of CP, respectively. The gas production of CA-LE feed was also significantly higher than of Control feed during the first 12 h of incubation. The results of the performance study (Exp. 2) showed that the level of CA-LE feed in the concentrate had no effect on total dry matter intake (p>0.05), but live weight gains (LWG) in CA-LE40 and CA-LE60 were significantly higher (551 and 609 g/d, respectively) than in the Control group (281 g/d). The intake of CP was higher (p<0.05) for the treatments CA-LE40 and CA-LE60 (556 and 590 g/d, respectively) compared to that of Control (458 g/d), while there was no significant difference in ME intake. The feed conversion ratio was 16.8, 9.0 and 7.9 kg DM/kg LWG in Control, CA-LE40 and CA-LE60, respectively. The feed cost of CA-LE40 and CA-LE60 corresponded to 43% and 35%, respectively, of the feed cost of Control feed. The best results were found when CA-LE feed replaced 60% of DM in Control feed and considerably decreased feed cost. It is concluded that feeding cassava foliage in combination with Phaseolus calcaratus legume as a protein supplement could be a potentially valuable strategy which leads to reduced feed costs and a more sustainable system in smallholder dairy production in Vietnam.