A WUSCHEL-related homeobox 3B gene, depilous (dep), confers glabrousness of rice leaves and glumes     

Rosalyn B Angeles-Shim  Kenji Asano  Tomonori Takashi  Junghyun Shim  Takeshi Kuroha  Madoka Ayano  Motoyuki Ashikari 《Rice》2011,5(1):1-12

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Extraction of natural dye from <Emphasis Type="Italic">Coreopsis tinctoria</Emphasis> flower petals for leather dyeing − An eco-friendly approach     

Palanivel Velmurugan  Jaehong Shim  Sang-Ki Seo  Byung-Taek Oh 《Fibers and Polymers》2016,17(11):1875-1883

This study evaluated the extraction of two colors of dye (yellow and brown) from Coreopsis tinctoria flower petals using ultrasound and the dyeing of leather with the extracted dyes as a source of nontoxic and eco-friendly dye. The results showed an increase in the dye extraction values with increasing time at 100 W ultrasonic power at 80 °C for 1 h. Leather dyeing was optimized with the aid of ultrasound and magnetic stirring. The optimum leather dyeing conditions, with respect to the dye uptake, dye penetration and intensity of the color, were determined to be 12 % dye concentration, 100 W power, 1,000 rpm, and pH 7.0 for 60 min at 80 °C. It was shown that sonication improves dye exhaustion from a 90 % to 60 % rating for 1 h of dyeing time. The dyed leather was assessed by reflectance measurements and compared with visual assessment data. The fastness properties of dyed leather samples showed good fastness against washing, light, and dry and wet rubbing. The strength properties were not significantly altered and the bulk properties, such as softness, were found to be improved by the use of Coreopsis tinctoria yellow and brown dyes using an ultrasonic and magnetic stirring dyeing process.  相似文献   

Sound characteristics according to cross-sectional shapes of fibers     

Chunjeong?Kim  Gilsoo?ChoEmail author  Kyoung?A?Hong  Hyun?Joo?Shim 《Fibers and Polymers》2003,4(4):199-203

In order to investigate the effects of cross-sectional shapes on the sound characteristics of polyester fibers, 10 specimens were woven into a twill structure made of round, hollow, triangular, u-shape, cruciform, and composite cross-sectional (▴/▴, ()/▴,Y y) fibers. Their rustling sounds were recorded, and their sound spectra were obtained from FFT analysis. Physical sound parameters (LPT, ΔL, Δf) and Zwicker’s psychoacoustic parameters of the loudness(Z), sharpness(Z), roughness(Z), and fluctuation strength(Z) were calculated from the sound spectra. According to noncircular cross-section fibers, the hollow shaped fiber had the highest value of LPT, ΔL, loudness(Z), and fluctuation strength(Z). The triangular shaped fiber had a lower value of LPT, ΔL, loudness(Z), and roughness(Z) than those of the round shaped fiber. Among composite cross-section fibers, C1 (▴/▴) and C3 (Y y) had higher values of LPT, ΔL, Δf, and loudness(Z) but C2 (()/▴) had lower values. Also the LPT, ΔL, sharpness(Z), and roughness(Z) values of different denier were similar to each other, but the Δf and loudness(Z) values increased as the denier increased.  相似文献   

The interaction of moving yarns with stationary surfaces     

Woo Sub Shim  Hun Lee  Duck Weon Lee 《Fibers and Polymers》2013,14(1):164-171

Ever since the spinning process was developed, numerous research studies have been conducted and many precision instruments have been developed to control the tension in moving yarn. These efforts, however, have remained insufficient because many factors that need to be considered have not been handled in an integrated manner. To overcome this limitation, various parameters that affect the tension must be examined and the relationships among them must be discovered. Hence, the present paper reviews a variety of parameters for yarn moving from a ring spinning machine to a winding machine. These two machines, in particular, involve a series of phenomena in which the yarn passes over a stationary surface. In addition, the relevant parameters related to force, tension, and yarn motion need to be separately investigated in each spinning section (e.g., the balloon, the section from the bobbin to the traveler, and the section from the bobbin to the unwinding package) and at each part (e.g., the traveler, yarn guide, package, and tensioner).  相似文献   

Powdery mildew caused by Erysiphe cruciferarum is found for the first time on Chinese cabbage in Korea   总被引：1，自引：0，他引：1  

H. J. Jee  C. K. Shim  Y. J. Choi  H. D. Shin 《Plant pathology》2008,57(4):777-777

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Evaluation of waterlogging tolerance with the degree of foliar senescence at early vegetative stage of maize (<Emphasis Type="Italic">Zea mays</Emphasis> L.)     

Seonghyu Shin  Seong-Guk Kim  Gun-Ho Jung  Chung-Guk Kim  Beom-Young Son  Jeong Tae Kim  Sang Gon Kim  Woonho Yang  Youngup Kwon  Kang-Bo Shim  Mi-Ok Woo 《Journal of Crop Science and Biotechnology》2016,19(5):393-399

Maize is highly susceptible to waterlogging, which is becoming one of worldwide abiotic threats in many agricultural areas. This study was evaluated to establish the screening method and to find tolerant maize genotypes. Six Korean maize inbred lines were subjected to waterlogging at V3 for 15 days using a big size pot with single maize plant (big pot method) and a box containing 31 maize plants at a time (box method). The degree of foliar senescence and the number of senescent leaves were better indicators for selecting waterlogging tolerant maize genotypes than SPAD value and plant height. The degree of foliar senescence revealed that KS124, KS140, and KS141 are tolerant, and KS85 is susceptible to waterlogging at the early growth stage. These responses of foliar senescence were in clear accordance with those of plant grain yield, which was supported by stress tolerance index for grain yield. The box method also showed the similar response of foliar senescence to the big pot method. Therefore, this box method based on foliar senescence may be simple and efficient for large-scale screening of maize germplasm against waterlogging stress. It was concluded that foliar senescence can be a good indicator for selecting tolerant maize genotypes against waterlogging at the early growth stage.  相似文献   

Development and evaluation of chromosome segment substitution lines (CSSLs) carrying chromosome segments derived from Oryza rufipogon in the genetic background of Oryza sativa L.     

Tomoyuki Furuta  Kanako Uehara  Rosalyn B. Angeles-Shim  Junghyun Shim  Motoyuki Ashikari  Tomonori Takashi 《Breeding Science》2014,63(5):468-475

The wild relatives of rice (Oryza sativa L.) are useful sources of alleles that have evolved to adapt in diverse environments around the world. Oryza rufipogon, the known progenitor of the cultivated rice, harbors genes that have been lost in cultivated varieties through domestication or evolution. This makes O. rufipogon an ideal source of value-added traits that can be utilized to improve the existing rice cultivars. To explore the potential of the rice progenitor as a genetic resource for improving O. sativa, 33 chromosome segment substitution lines (CSSLs) of O. rufipogon (W0106) in the background of the elite japonica cultivar Koshihikari were developed and evaluated for several agronomic traits. Over 90% of the entire genome was introgressed from the donor parent into the CSSLs. A total of 99 putative QTLs were detected, of which 15 were identified as major effective QTLs that have significantly large effects on the traits examined. Among the 15 major effective QTLs, a QTL on chromosome 10 showed a remarkable positive effect on the number of grains per panicle. Comparison of the putative QTLs identified in this study and previous studies indicated a wide genetic diversity between O. rufipogon accessions.  相似文献   

Immunochromatography using colloidal gold-antibody probe for the detection of atrazine in water samples     

Shim WB  Yang ZY  Kim JY  Choi JG  Je JH  Kang SJ  Kolosova AY  Eremin SA  Chung DH 《Journal of agricultural and food chemistry》2006,54(26):9728-9734

An immunochromatography (ICG) strip test for rapid detection of atrazine in water samples was developed. A monoclonal antibody (MAb) specific to atrazine was produced from the cloned hybridoma cell (AT-1-M3) and used to develop a direct competitive enzyme-linked immunosorbent assay (DC-ELISA) and ICG strip. MAb conjugated to colloidal gold, and that was applied to the conjugate pad of the ICG strip. The visual detection limit for the ICG strip was 3 ng/mL. This test required only 10 min to get results and one step of sample to perform the assay. The results of water samples spiked with 5, 10, 20, and 50 ng/mL of atrazine by ICG strip were in good agreement with those obtained by DC-ELISA. The ICG strip was sufficiently sensitive and accurate to be useful for rapid screening of atrazine in various water samples.  相似文献   

Inhibition of pathogenic bacterial adhesion by acidic polysaccharide from green tea (Camellia sinensis)     

Lee JH  Shim JS  Lee JS  Kim JK  Yang IS  Chung MS  Kim KH 《Journal of agricultural and food chemistry》2006,54(23):8717-8723

An acidic polysaccharide CS-F2 from Camellia sinensis was examined to characterize its anti-adhesive effects against pathogenic bacteria, most notably Helicobacter pylori, Propionibacterium acnes, and Staphylococcus aureus. CS-F2 showed marked inhibitory activity against the pathogen-mediated hemagglutination with a minimum inhibitory concentration (MIC) between 0.01 and 0.1 mg/mL, which is lower than the previously reported MIC values for Panax ginseng and Artemisia capillaris. The inhibitory effects of CS-F2 on the adhesion of H. pylori to AGS adenocarcinoma gastric epithelial cells, or P. acnes and S. aureus to NIH 3T3 fibroblast cells, were further assessed resulting in MIC values between 0.063 and 0.13 mg/mL. Importantly, CS-F2 showed no inhibitory effects against Lactobacillus acidophilus, Escherichia coli, or Staphylococcus epidermidis. Our results suggest that CS-F2, which is a pectin-type polysaccharide with a molecular weight of approximately 8.0 x 10(4) Da, may exert a selective anti-adhesive effect against certain pathogenic bacteria, while exerting no effects against beneficial and commensal bacteria.  相似文献   

Probing of an environmentally friendly regenerated cellulose material having bimorphic behavior     

Woo Sub Shim  Jae Pil Kim  Jung Jin Lee  Joonseok Koh  Ik Soo Kim 《Fibers and Polymers》2008,9(6):691-697

Novel regenerated cellulose material which was prepared from cellulose acetate fiber through the hydrolysis of acetyl groups have been developed by an environmentally friendly process without emitting toxic substances in addition to be at low production cost. They have composite crystalline structure constituted of cellulose II and cellulose IV. Also, they show a lamellar morphology with an increased amorphous region, as compared to conventional regenerated cellulose such as viscose rayon and cupra rayon. Our data obtained by several independent methods demonstrated that the adsorption properties of cellulose fibers depend predominantly on the amorphous region.  相似文献