• Journal of Hydrogen and New Energy
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• v.25 no.6
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• pp.561-569
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• 2014

Ceria ($CeO_2$) was used to increase the durability of the membrane in the polymer electrolyte membrane water electrolysis (PEMWE) circumstance. The sulfonated polyether ether ketone (SPEEK) as polymer matrix was prepared in the sulfonation reaction of polyether ether ketone (PEEK) to improve electrochemical characteristics. After sulfonation reaction, the organic-inorganic blended composite membranes were prepared by means of sol-gel casting method with loading the highly dispersed $CeO_2$ and Cs-substituted molybdophosphoric acid (Cs-MoPA) with cross-linking agent (tetrapropyl orthosilicate). Consequently, the composite membrane CL-SPEEK/Silane 4wt%/Cs-MoPA/Ceria(1%) showed the improved characteristics such as 82% of water content, 0.11136 S/cm of proton conductivity at $80^{\circ}C$, 55.50 MPa of tensile strength and 4.37% of breeding out of MoPA.

• Animal Bioscience
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• v.35 no.8
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• pp.1129-1140
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• 2022

Objective: With improvements in living standards and increase in global population, the demand for meat products has been increasing; improved meat production from livestock could effectively meet this demand. In this study, we examined the differences in the muscle traits of different male crossbred sheep and attempted to identify key genes that regulate these traits. Methods: Dubo sheep×small-tailed Han sheep (DP×STH) and Suffolk×small-tailed Han sheep (SFK×STH) were selected to determine meat quality and production performance by Masson staining. Transcriptome sequencing and bioinformatic analysis were performed to identify differentially expressed genes (DEGs) related to meat quality. The presence of DEGs was confirmed by real-time polymerase chain reaction. Results: The production performance of SFK×STH sheep was better than that of DP×STH sheep, but the meat quality of DP×STH sheep was better than that of SFK×STH sheep. The muscle fiber diameter of DP×STH sheep was smaller than that of SFK×STH sheep. Twenty-two DEGs were identified. Among them, four gene ontology terms were related to muscle traits, and three DEGs were related to muscle or muscle fibers. There were no significant differences in the number of single nucleotide mutations and mutation sites in the different male parent cross combinations. Conclusion: This study provides genetic resources for future sheep muscle development and cross-breeding research.

• Horticultural Science & Technology
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• v.29 no.2
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• pp.130-134
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• 2011

Paprika (Capsicum annuum L.), a colored bell-type sweet pepper, is one of the most important money making vegetable crops in Korea. The cultivation area, total production, and exports of paprika are gradually getting increased, but the paprika cultivars used in Korea are all imported. It was well-known that the genic male sterility (GMS) is the main way to produce paprika hybrid seeds. However, it is little known that how many and what kinds of ms genes are used for breeding of paprika $F_1$ varieties. In this study, eight paprika cultivars ('Special', 'Debla', 'Plenty', 'Fiero', 'Boogie', 'Fiesta', 'Derby', and 'Minibell'), popularly cultivated in Korea and three different genic male sterile lines ('GMSP', 'GMS3', and 'GMSK') were used. For allelism test among the $F_1$ cultivars, half diallel crosses were performed. The result demonstrated that the most of the GMS in paprika cultivars except for 'Minibell' were same allele. To identify which GMS gene(s) were used for paprika $F_1$ cultivars, top crosses between previously known GMS lines and the $F_1$ cultivars were performed. As a result, we found that the $ms_k$ and the $ms_p$ genes were alleles for the GMS of 'Minibell' and for the other cultivars, respectively. We also confirmed that the GMS gene identification using GMSK-CAPS marker linked to the $ms_k$ gene and the PmsM1-CAPS marker linked to the $ms_p$ gene in $F_2$ progenies of 'Minibell' and 'Fiesta' and 'Derby' cultivars, respectively. In addition, we developed the PmsM2-CAPS marker for 'Plenty', 'Fiero', and 'Boogie' cultivars. We expect that these markers will be very useful for breeding new maternal (male sterile) line of paprika.

• Horticultural Science & Technology
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• v.19 no.1
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• pp.60-65
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• 2001

'Shinil' pear cultivar (Pyrus pyrifolia Nakai) which was originated in a cross between 'Shinko' (non-patented, released in 1941) and 'Hosui' (non-patented, released in 1972) in 1978 was released as a middle season harvest variety. Its usual picking time coincided with 'Chuseok' season which is one of the most famous national holiday in Korea. The fruit showed high soluble solids content and good appearance. The cultivar was preliminarily selected in 1991, and its regional adaptability was evaluated in the name of 'Wonkyo Na-13' at 9 sites for four years from 1992, and finally selected and named in 1995. 'Shinil' is medium in tree vigor like 'Hosui' and spreading in tree habit as 'Niitaka', a leading cultivar in Korea, and consistently very productive. It has high resistance to black rot caused by Alternaria kikuchiana and pear necrotic spot caused by pear necrotic spot virus. Its full bloom is one day earlier than that of 'Niitaka' cultivar and harvest time is September 25 at Suwon area which is 3 days later than that of 'Hosui'. Fruit is round in shape with a deep medium stalk cavity and medium calyx basin and has attractive light yellow brown skin color. The fruit weight ranges between 300 and 400 g, which is similar to 'Chojuro', 'Shinko', and 'Hosui'. Soluble solid content is approximately at the level of 13-14 Brix, which is higher than that of 'Chojuro'. The flesh is cream-white, very juicy, and light grit with soft and fine texture.

• Computers and Concrete
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• v.17 no.3
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• pp.295-304
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• 2016

An experimental investigation on the behaviour of concrete beams reinforced with various reinforcement, including ordinary steel bars, CFRP bars and CFRP prestressed concrete prisms(PCP). The main variable in the test program was the level of prestress and the cross section of PCP.The modes of failure and the crack width were observed. The results of load-deflection and load-crack width characteristics were discussed. The results showed that the CFRP prestressed concrete prisms as flexural reinforcement of concrete beams could limit deflection and crack width under service load and PCP can overcome the serviceability problems associated with the low elastic modulus/strength ratio of CFRP.

• Earthquakes and Structures
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• v.11 no.2
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• pp.315-326
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• 2016

This paper presents the results of cyclic loading tests on concrete beams reinforced with various reinforcement, including ordinary steel bars, CFRP bars and CFRP prestressed concrete prisms(PCP). The main variable in the test program was the level of prestress and the cross section of PCP. The seismic performance indexes including hysteretic loops, skeleton curve, ductility, energy dissipation capacity and stiffness degradation were analyzed. The results show that the CFRP prestressed concrete prisms as flexural reinforcement of concrete beams has good seismic performance. And the ductility and the energy dissipation capacity were good, the hysteresis loops were full and had large area.

• Natural Product Sciences
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• v.1 no.1
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• pp.66-69
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• 1995

Traditional Antheraea pernyi silkworm cocoon is tawny color. The white Antheraea pernyi silkworm cocoons studied here by IR and UV are new breeds of recent breeding. We discovered that the main body of the first grade structure of silk protein in the new white is as same as the one in the traditional tawny Antheraea pernyi silkworm cocoon, yet there are small quantities of cross-linked polymer of gentisic acid and silk protein in the white silkworm cocoons. In spite of the least surviving quantity of the polymer, the white silkworm cocoons are most white and its white color is similar to white Bombyx mori silkworm cocoon.

• 한국약용작물학회:학술대회논문집
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• 2011.09a
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• pp.214-215
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• 2011

• International Journal of Industrial Entomology and Biomaterials
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• v.10 no.2
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• pp.153-157
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• 2005

Recently two breeding programs were carried out for isolation of new parental inbred lines in Iran. This study was undertaken in order to estimate the combining ability effects and heterosis of these lines. For this purpose an $8\times8$ diallel cross analysis including eight inbred lines of silkworm with four lines from each program were studied for their five quantitative traits. The results indicated that reciprocal effects appeared insignificant for most of traits. Japanese lines of 111 and 113 were best combiners for shell weight, cocoon weight and shell percentage traits. With respect to pupation rate, Chinese line 110 was the best and according to general combining ability (GCA) and specific combining ability (SCA) variances, it is superior in specific combinations. Hybrid $109\times110$ showed better characters for both productive and viability traits. Hybrids with high heterosis had high SCA too.

• Asian Journal of Turfgrass Science
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• v.13 no.3
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• pp.147-151
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• 1999

"Konhee" zoysiagrass[Zoysia matrella (L) Merr.](Patent registration no. 2000-723), a vegetative cultivar, was developed by the Dept. of Horticultural Science, Konkuk University, Seoul. "Konhee" was selected from the cross, ZKV6$\times$ZKV10, in 1997 and F1 seed were produced in the greenhouse in 1996. "Konhee" is superior to the other fine leaf zoysiagrass lines in many traits such as erect type, plant height($8.5\pm$2.0cm), short 3rd stolon length($3.4\pm$0.5cm), dark green, fine leaf($2.3\pm$0.2mm), low first sheath height($0.9\pm$0.2cm), rapid establishment and recoverage, many stolon number, and high shoot density. When "Konhee" was compared to the five other zoysisagrass lines at the DNA level using 35 PCR primers, it had the specific bands with primer No. 740, 544, 765, 772 by RAPD analysis.No. 740, 544, 765, 772 by RAPD analysis.