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Localization of Single Chain Fv Antibodies (scFv) in Transgenic Tobacco Ptants Showing Resistance against Tomato Bushy Stunt Virus

  • Jeun, Y.C.;Boonrod, K.;Nagy, P.;Conrad, U.;Krczal, G.
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 2003.10a
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    • pp.75.2-75
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    • 2003
  • To develop an effective protection strategy against tomato bushy stunt virus (TBSV), tobacco plants expressing single-chain Fv antibodies (scFv), were established. A previous had shown that the replication activity of viral replicase was inhibited by the selected scFvs. Moreover, no systemic symptom was found after virus inoculation on leaves of wt N. benthamiana infiltrated with an Agrobacterium suspension resulting i3l expression of the scFvs. However, control plants showed systemic symptoms. In this study the localization of the scFvs within two transgenic plant lines, (CP28H3, CP-P55) was demonstrated using immunogold labelling. The gold particles, indicating the presence of scFv, were mostly found In the cytoplasm of the plant cells including chloroplasts and in the cell walls. However, they were hardly found in the vacuole, nucleoplasm and intercellular spaces. Gold particles often accumulated in either the cytosol or chloroplasts showing a specific labeling, There was no difference in type of gold labeling between both transgenic lines. The localization of the scFv in the cytoplasm further conforms the inhibition of the RNA-dependent RNA polymerase (RdRp) by the selected scFv because it is known that the RdRp is localized to membraneous cytosolic structures.

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Adsorption of Phenols onto Chemically-Activated Carbons Developed from Wild Cherry Stones

  • Alaya, M.N.;Youssef, A.M.;Karman, M.;Abd El-Aal, H.E.
    • Carbon letters
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    • v.7 no.3
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    • pp.188-195
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    • 2006
  • Phosphoric acid-activated carbon WP's and zinc chloride-activated carbons WZ's were developed from wild cherry stones. The textural properties of the activated carbons were determined from nitrogen adsorption data at 77 K and the chemistry of the carbon surface, i.e. the surface carbon-oxygen groups (type and amount) was determined from the base and acid neutralization capacities (Boehm method). The adsorption of phenol, p-nitrophenol, p-chlorophenol, dinitrophenol and dichlorophenol was followed at 298 K. The activated carbons obtained were characterized by high surface area and large pore volumes as well as by high surface concentration of C-O groups. The investigated carbons exhibited high adsorption capacities towards phenols with these capacities increased with the increase of molecular weight and the decrease of the solubility of phenol in water. However, no general relationship could be observed between the adsorption capacities of carbons and any of their textural parameters or their surface chemistry. This may be attributed to the many factors controlling phenol adsorption and the different types and mechanisms of adsorption involved.

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Cattle Production on Small Holder Farms in East Java, Indonesia: I. Household and Farming Characteristics

  • Winarto, P.S.;Leegwater, P.H.;;Ibrahim, M.N.M.
    • Asian-Australasian Journal of Animal Sciences
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    • v.13 no.2
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    • pp.220-225
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    • 2000
  • A general household survey was carried out in the village of Sonoageng in East Java, Indonesia with the aim to assess their socio-economic status, and the crop and livestock production system prevailing in the area. Of the households interviewed (164), 52% are landless, 35% own land or have a combination of own and shared land, and 12% do not own land but have access to land by sharing. Nearly two thirds (65%) of the households raise cattle; most of them own animals, 8% reared shared animals only. The dominant crop was rice; other crops grown were soya bean, groundnut, maize and sugar cane. Nearly half (47%) the household income was derived from off-farm work (non-agricultural activities), 33% from crops, 13% from livestock (mainly cattle), and 7% from agricultural labour. Most households kept 1 to 2 animals and only 21 out of 164 households earned more than Rp. 500,000 (~250 US$) per annum from livestock. The most prevalent type of livestock production in the area could be characterized as small-scale cow/calf operation, either by landless households or those with <0.4 ha of land.

Lactation and Function of Curve Parameters in Yankasa Sheep

  • Afolayan, R.A.;Abubakar, B.Y.;Osinowo, O.A.;Dim, N.I.
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.6
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    • pp.890-894
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    • 2002
  • The accuracy of the gamma function to describe lactation curve of Yankasa ewes was investigated using milk production data obtained from 168 ewes with either complete or incomplete 84 day lactation records. Ewes were daily hand milked after over-night separation from lamb and thorough disinfection of the udder. The daily milk yield on the average was estimated from the weekly total yield. The effect of type of birth, parity, season of birth and lactation length on the components of lactation curve (a, b, c and s) were analysed by least-square procedures. All factors except parity significantly (p<0.01) influenced the curve parameters. The goodness of fit of the function did not differ between the two classes of varying duration of lactation; incomplete lactation however, showed a lower persistency and as expected lower level of production. Correlations ($r_p$) between lamb weight gain and milk yield using the weight records from lamb weighed at weekly intervals indicated a high and positive relationship in the early lactation that decreased in intensity as the lactation advanced.

Impact of Lifestyle Diseases on Postoperative Complications and Survival in Elderly Patients with Stage I Non-Small Cell Lung Cancer

  • Jeong, Sang Seok;Choi, Pil Jo;Yi, Jung Hoon;Yoon, Sung Sil
    • Journal of Chest Surgery
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    • v.50 no.2
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    • pp.86-93
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    • 2017
  • Background: The influence of lifestyle diseases on postoperative complications and long-term survival in patients with non-small cell lung cancer (NSCLC) is unclear. The aim of this study was to determine whether lifestyle diseases were significant risk factors of perioperative and long-term surgical outcomes in elderly patients with stage I NSCLC. Methods: Between December 1995 and November 2013, 110 patients aged 65 years or older who underwent surgical resection of stage I NSCLC at Dong-A University Hospital were retrospectively studied. We assessed the presence of the following lifestyle diseases as risk factors for postoperative complications and long-term mortality: diabetes, hypertension, chronic obstructive pulmonary disease, stroke, and ischemic heart disease. Results: The mean age of the patients was 71 years (range, 65 to 82 years). Forty-six patients (41.8%) had hypertension, making it the most common lifestyle disease, followed by diabetes (n=23, 20.9%). The in-hospital mortality rate was 0.9% (n=1). The 3-year and 5-year survival rates were 78% and 64%, respectively. Postoperative complications developed in 32 patients (29.1%), including 7 (6.4%) with prolonged air leakage, 6 (5.5%) with atrial fibrillation, 5 (4.5%) with delirium and atelectasis, and 3 (2.7%) with acute kidney injury and pneumonia. Univariate and multivariate analyses showed that the presence of a lifestyle disease was the only independent risk factor for postoperative complications. In survival analysis, univariate analysis showed that age, smoking, body mass index, extent of resection, and pathologic stage were associated with impaired survival. Multivariate analysis revealed that resection type (hazard ratio [HR], 2.20; 95% confidence interval [CI], 1.08 to 4.49; p=0.030) and pathologic stage (HR, 1.89; 95% CI, 1.02 to 3.49; p=0.043) had independent adverse impacts on survival. Conclusion: This study demonstrated that the presence of a lifestyle disease was a significant prognostic factor for postoperative complications, but not of survival, in elderly patients with stage I NSCLC. Therefore, postoperative complications may be influenced by the presence of a lifestyle disease.

Kinetic Study on Michael-type Reactions of 1-Phenyl-2-propyn-1-one with Alicyclic Secondary Amines: Effect of Medium on Reactivity and Mechanism

  • Hwang, So-Jeong;Park, Youn-Min;Um, Ik-Hwan
    • Bulletin of the Korean Chemical Society
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    • v.29 no.10
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    • pp.1911-1914
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    • 2008
  • Second-order rate constants (kN) have been measured for Michael-type addition reactions of a series of alicyclic secondary amines to 1-phenyl-2-propyn-1-one (2) in MeCN at 25.0 ${\pm}$ 0.1 ${^{\circ}C}$. All the amines studied are less reactive in MeCN than in $H_2O$ although they are more basic in the aprotic solvent by 7-9 p$K_a$ units. The Bronsted-type plot is linear with $\beta_{nuc}$ = 0.40, which is slightly larger than that reported previously for the corresponding reactions in $H_2O$ ($\beta_{nuc}$ = 0.27). Product analysis has shown that only E-isomer is produced. Kinetic isotope effect is absent for the reactions of 2 with morpholine and deuterated morpholine (i.e., $k^H/k^D$ = 1.0). Thus, the reaction has been concluded to proceed through a stepwise mechanism, in which proton transfer occurs after the rate-determining step. The reaction has been suggested to proceed through a tighter transition state in MeCN than in H2O on the basis of the larger $\beta_{nuc}$ in the aprotic solvent. The nature of the transition state has been proposed to be responsible for the decreased reactivity in the aprotic solvent.

A Study on Personality Types and Learning Styles of the Gifted in Mathematics and Sciences (초등학교 수학 및 과학 영재와 일반아동의 학습양식과 성격유형의 차이 연구)

  • 김판수;강승희
    • School Mathematics
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    • v.5 no.2
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    • pp.191-208
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    • 2003
  • The purpose of this paper is to find the differences of personality types and learning styles of general students(69) and the gifted in mathematics(66) and sciences(66). 132 subjects, whose academic achievements are in top 1 % level in elementary schools, were selected from the gifted center of the university in Busan. MMTIC(Murphy-Meisgeir Type Indicator for Children) was used to classify personal style inventory(E-I, S-N, T-F and J-P). Adapted form of Grasha & Reichmann's learning style was used to classify 3 pairs: dependent-independent, competitive-collaborative, avoidant-participant. In this paper, we were mainly concerned with the differences of learning styles, and personal types of three groups according to as indices, functions and temperament. One of our results was that there were differences of personality types between general students and the gifted in mathematics and sciences according to as indices, functions and temperament. And there were differences of learning style between three groups according to as dependent-independent, and avoidant-participant.. The gifted in mathematics and sciences prefer to independent and participant learning style in comparison with general students. Finally, there were relation of personality types and learning styles. According to functions and temperament of MMTIC, SF (sensation-feeling) and NF(intuition-feeling) type students prefer to collaborative and participant styles in comparison with ST (sensation-thought) and NT(intuition-thought) type students. And NT(intuition-thought) type students prefer to avoidant styles in comparison with SF(sensation-feeling) and NF(intuition-feeling) type students.

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Effects of Dietary Fat Types on Growth Performance, Pork Quality, and Gene Expression in Growing-finishing Pigs

  • Park, J.C.;Kim, S.C.;Lee, S.D.;Jang, H.C.;Kim, N.K.;Lee, S.H.;Jung, H.J.;Kim, I.C.;Seong, H.H.;Choi, Bong-Hwan
    • Asian-Australasian Journal of Animal Sciences
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    • v.25 no.12
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    • pp.1759-1767
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    • 2012
  • This study was performed to determine the effects of dietary fat sources, i.e., beef tallow, soybean oil, olive oil and coconut oil (each 3% in feed), on the growth performance, meat quality and gene expression in growing-finishing pigs. A total of 72 crossbred pigs (Landrace${\times}$Large White${\times}$Duroc) were used at $71{\pm}1$ kg body weight (about 130 d of age) in 24 pens ($320{\times}150$ cm) in a confined pig house (three pigs per pen) with six replicate pens per treatment. The growing diet was given for periods of $14{\pm}3$ d and the finishing diet was given for periods of $28{\pm}3$ d. The fat type had no significant effect either on growth performance or on chemical composition or on meat quality in growing-finishing pigs. Dietary fat type affected fatty acid composition, with higher levels of unsaturated fatty acids (UFAs) and monounsaturated fatty acids (MUFAs) in the olive oil group. Microarray analysis in the Longissimus dorsi identified 6 genes, related to insulin signaling pathway, that were differentially expressed among the different feed groups. Real time-PCR was conducted on the six genes in the longissimus dorsi muscle (LM). In particular, the genes encoding the protein kinase, cAMP-dependent, regulatory, type II, alpha (PRKAR2A) and the catalytic subunit of protein phosphatase 1, beta isoform (PPP1CB) showed the highest expression level in the olive oil group (respectively, p<0.05, p<0.001). The results of this study indicate that the type of dietary fat affects fatty acid composition and insulin signaling-related gene expression in the LM of pigs.

Effect of Bacillus Subtilis-based Direct-fed Microbials on Immune Status in Broiler Chickens Raised on Fresh or Used Litter

  • Lee, K.W.;Lillehoj, H.S.;Jang, S.I.;Lee, S.H.;Bautista, D.A.;Siragusa, G.R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.26 no.11
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    • pp.1592-1597
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    • 2013
  • Type of dietary direct-fed microbials (DFMs) or poultry litter could directly influence the composition of gut microbiota. Gut microbiota plays an important role in shaping the developing immune system and maintaining the homeostasis of the mature immune system in mammal and chickens. The present study was carried out to investigate the interaction among litter, DFMs and immunity in broiler chickens exposed to a field-simulated environment. Immune status of broiler chickens was assessed by serum antibodies against Eimeria spp. and Clostridium spp. and intestinal cytokine mRNA expression. The current experimental design had a $3{\times}2$ factorial arrangement of treatments with three types of litter, i.e., fresh litter or used litter that was obtained from a farm with no disease outbreak (used litter) or a farm with history of a gangrenous dermatitis outbreak (GD litter), and two dietary treatments with or without DFMs. It was found that either DFM addition or type of litter significantly affected anticoccidial antibody levels of broiler chickens at d 42. In general, dietary DFMs increased the anticoccidial antibodies in the fresh-litter raised chickens, but lowered the levels in the GD-litter raised chickens. Serum antibodies against Clostridium perfringens ${\alpha}$-toxin were significantly (p<0.05) higher in chickens raised on GD litter compared with those raised on fresh litter. Cytokine mRNA expression was significantly (p<0.05) altered by either the type of litter or DFMs. Of interest, dietary DFMs lowered interferon-${\gamma}$, interleukin 1beta, and CXCLi2 cytokine mRNA expression in chickens raised on fresh litter but increased them in GD-litter raised chickens. In conclusion, dietary DFMs modulate various immune parameters of broiler chickens, but the DFM-mediated effects were dependent upon the type of litter on which chickens were raised.

Effects of Chlorophyll a on UVB-induced Cellular Responses and Type I pN Collagen Synthesis in vitro (클로로필 a가 UVB 유도성 산화적 스트레스와 matrix metalloproteinases (MMPs) 활성화 및 콜라겐 합성에 미치는 영향)

  • Jeon, Hee-Young;Kim, Jeong-Kee;Seo, Dae-Bang;Lee, Sang-Jun
    • Korean Journal of Food Science and Technology
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    • v.41 no.6
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    • pp.700-705
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    • 2009
  • Several studies have demonstrated that chlorophyll has many beneficial properties, including anti-inflammatory, anti-tumor, and antioxidant properties. Chlorophyll has been also shown to have an excellent chemopreventive potential against skin tumor. Its preventive mechanism against skin tumor, however, has not been examined in detail. Furthermore, the effects of chlorophyll on UVB-induced cellular responses have not been investigated. Solar UV radiation, in particular its UVB component, is the primary cause of many adverse biological effects, which is responsible for the photoaging and skin cancer. We investigated the preventive effects of chlorophyll a on UVB-mediated responses in human immortalized HaCaT kerationocytes and normal human fibroblast. We found that treatment of chlorophyll a markedly inhibited UVB-induced generation of reactive oxygen species and lipid peroxidation. Chlorophyll a also prevented UVB-induced MMP-1 expression and MMP-2 activation and increased Type I pN collagen synthesis. These results suggest that chlorophyll a is a potent candidate for the prevention and treatment of UVB-induced skin cancer and photoaging.