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71.
Young Min Im Tae Hwan Oh Jin Wook Cha Young Ho Seo Jun Sung Hwang Joseph A. Nathanael Sung Soo Han Soon Ho Jang 《Fibers and Polymers》2014,15(10):2066-2071
Poly(vinyl alcohol) (PVA)/zirconium oxide (ZrO2) composite nanofibers with a skin-core structure were prepared and the effect of ZrO2 particle content on uniform web formation was investigated. The optimized polymer concentration, tip to collector distance, and applied voltage for electrospinning were 11 wt%, 12 cm, and 20 kV, respectively. Skin-core PVA/ZrO2 composite nanofibers containing up to 12 wt% ZrO2 were successfully prepared, but it was difficult to obtain PVA/ZrO2 composite nanofiber webs via conventional electrospinning. Increasing the amount of ZrO2 caused the morphology of the PVA/ZrO2 composite nanofibers to become a non-uniform nanoweb with irregular nanofiber diameters. While it was difficult to obtain a uniform nanofiber web containing a content of ZrO2 over 6 wt% for conventional electrospinning, a more uniform nanofiber web could be obtained at up to 9 wt% ZrO2 using a skin-core dual nozzle. More uniform webs could also be obtained when ZrO2 was in the skin rather than the core. 相似文献
72.
Kim B Shin JH Han K Seo HW Oh Y Kang I Park C Lee BH Jang JS Kim SH Chae C 《Veterinary research communications》2011,35(7):469-475
The expression of myeloperoxidase (MPO) was examined in the swine influenza virus (SIV)-infected neutrophils in the lungs of pigs experimentally infected with swine influenza virus (SIV) subtype H1N2 by immunohistochemistry. Five pigs each from the infected and non-infected group were euthanized 1, 3, 5, 7, and 10?days post-inoculation (dpi). Immunohistochemical reactivity was mainly seen in neutrophils. The score for pulmonary histopathological lesions correlated with the score for MPO immunohistochemical reactivity (r ( s )?=?0.962, P?0.01). In addition, the score for in situ hybridization of SIV nucleic acid correlated with the score for MPO immunohistochemical reactivity (r ( s )?=?0.976, P?0.01). These results suggest neutrophils are one of the primary effector cells in the early phase of SIV infection in pigs. 相似文献
73.
Krishnan HB Jang S Kim WS Kerley MS Oliver MJ Trick HN 《Journal of agricultural and food chemistry》2011,59(4):1223-1228
Legumes, including soybeans ( Glycine max ), are deficient in sulfur-containing amino acids, which are required for the optimal growth of monogastric animals. This deficiency can be overcome by expressing heterologous proteins rich in sulfur-containing amino acids in soybean seeds. A maize 27 kDa γ-zein, a cysteine-rich protein, has been successfully expressed in several crops including soybean, barley, and alfalfa with the intent to biofortify these crops for animal feed. Previous work has shown that the maize 27 kDa zein can withstand digestion by pepsin and elicit an immunogenic response in young pigs. By use of sera from patients who tested positive by ImmunoCAP assay for elevated IgE to maize proteins, specific IgE binding to the 27 kDa γ-zein is demonstrated. Bioinformatic analysis using the full-length and 80 amino acid sliding window FASTA searches identified significant sequence homology of the 27 kDa γ-zein with several known allergens. Immunoblot analysis using human serum that cross-reacts with maize seed proteins also revealed specific IgE-binding to the 27 kDa γ-zein in soybean seed protein extracts containing the 27 kDa zein. This study demonstrates for the first time the allergenicity potential of the 27 kDa γ-zein and the potential that this protein has to limit livestock performance when used in soybeans that serve as a biofortified feed supplement. 相似文献
74.
Paddy and Water Environment - Predicting adaptation and the response of agricultural water resources to climate change is a challenging. As changes in future climate will change agricultural... 相似文献
75.
Lee Jang Hoon Anderson Anne J. Kim Young Cheol 《European journal of plant pathology / European Foundation for Plant Pathology》2021,161(4):981-986
European Journal of Plant Pathology - Certain chemical pesticides control plant diseases through induction of systemic resistance mechanisms. In this study, orysastrobin, a “quinone outside... 相似文献
76.
Continuous photografting/crosslinking of polyethyleneglycol dimethacrylate oligomers onto cotton using a water-soluble benzophenone
photoinitiator was investigated. Photografting increased with increasing irradiation dose, oligomer concentration and photoinitiator
concentration. Maximum grafting efficiency of DM 400 and 600 were 83% and 79%, respectively. The photografting increased the
wrinkle resistance of cotton implying surface crosslinking of cotton. Both surface crosslinking and bulk crosslinking of cotton
were accomplished via dual curing of a mixed formulation containing both a thermally curable component (BTCA/SHP) and a UV-curable
component. The wrinkle resistance of the crosslinked cotton was found to be higher when cured by thermal curing after UV curing
rather than by UV curing after thermal curing due to the facile post-polymerization of the UV active component. The presence
of crosslinks in the dually crosslinked cotton was verified with FT-IR and thermogravimetric analysis. 相似文献
77.
大豆单交及三交组合方式与后代优良品系入选机率的关系 总被引:1,自引:1,他引:1
为了进一步提高大豆育种研究水平,加快高产、抗病、优质大豆新品种选育进程,对1971~1982年11年的亲本选配及组合配制方式进行了分析,对三交组合即当地良种×(当地良种×外引良种)F_1选出的优良品种及品系的统计分析表明:三交组合较单交组合选出的优良品种及品系机率高,且丰产性能、抗病性能优于生产品种。绥农4、绥农5、绥农6、绥农8号四个大豆新品种均是以三交组合方式选育成功的。育种理论分析、经验和实践都表明三交组合方式值得提倡。 相似文献
78.
Dispersant-free PTT dyeing of temporarily solubilized azo disperse dyes based on pyridone moiety which contain β-sulfatoethylsulfonyl
group was investigated. The dyes were successfully applied to PTT without the use of dispersants. The color yields of the
dyes on PTT fabric were dependent on dyeing pH as well as dyeing temperature. The optimum results were obtained at pH 5–6
and 110 °C. The dyes showed alkali-clearing property and exhibited good to excellent fastness on the PTT fabric. The COD levels
of the dyeing effluent from the temporarily solubilized disperse dyes were much smaller than those from commercial disperse
dye. 相似文献
79.
Buk-Gu Heo Sang-Uk Chon Yun-Jum Park Jong-Hyang Bae Su-Min Park Yong-Seo Park Hong-Gi Jang Shela Gorinstein 《Plant foods for human nutrition (Dordrecht, Netherlands)》2009,64(4):257-263
This study was conducted to determine the antiproliferative activity of 24 Korean wild vegetables. The methanol extracts of
these wild vegetables were used against lung, breast, colon and gastric cancer cells, and the results were assessed by MTT
assay. It was found that at the extract concentration of 400 mgL−1 14 plants exercised antiproliferative activity over 80% against the lung cancer cells, one plant among six—against breast
cancer cells, and two plants among six—against colon cancer cells, respectively. Eighteen wild vegetables had the hyperplasia
inhibition activity against gastric cancer cells over 23.6% at all extract concentrations, however, only six plants had the
antiproliferative activity over 80% in 600 mgL−1. It was found that the extracts from Youngia sonchifolia, Synurus deltoides, Syneilesis palmata, and Cephalonoplos segetum, in concentration of 400 mgL−1 inhibited the hyperplasia of lung cancer cells over 95% and Angelica gigas—both lung and colon cancer cells over 95%. In conclusion, the studied wild vegetables’ methanol extracts possess dose dependent
antiproliferative properties, based on their bioactive compounds, mainly polyphenols, but some of them as Hypericum ascyron against lung cancer are not effective and even course harm. 相似文献
80.
Cho JY Kim HY Choi GJ Jang KS Lim HK Lim CH Cho KY Kim JC 《Pest management science》2006,62(5):414-418
The methanol extract of stems of Catalpa ovata G Don exhibits potent in vivo antifungal activity against Magnaporthe grisea (Hebert) Barr (rice blast) on rice plants, Botrytis cinerea Pers ex Fr (tomato grey mould) and Phytophthora infestans (Mont) de Bary (tomato late blight) on tomato plants, Puccinia recondita Rob ex Desm (wheat leaf rust) on wheat plants and Blumeria graminis (DC) Speer f. sp. hordei Marchal (barley powdery mildew) on barley plants. An antifungal substance was isolated and identified as dehydro-alpha-lapachone from mass and nuclear magnetic resonance spectral data. It completely inhibited the mycelial growth of B. cinerea, Colletotrichum acutatum Simmonds, Colletotrichum gloeosporioides Simmonds, M. grisea and Pythium ultimum Trow over a range of 0.4-33.3 mg litre(-1). It also controlled the development of rice blast, tomato late blight, wheat leaf rust, barley powdery mildew and red pepper anthracnose (Colletotrichum coccodes (Wallr) S Hughes). The chemical was particularly effective in suppressing red pepper anthracnose by 95% at a concentration of 125 mg litre(-1). 相似文献