• Journal of Microbiology and Biotechnology
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• v.11 no.4
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• pp.663-667
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• 2001

A new secondary metabolite was isolated from the culture broth and mycelium of Streptomyces sp. collected from marine sediment. The structure of this compound was determined to be N-formylantimycic acid methyl ester, an acyclic derivative of antimycin, on the basis of combined chemical and spectral methods. The structure-activity relationship of antimycins is discussed.

• Journal of Korean Society for Quality Management
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• v.28 no.4
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• pp.119-139
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• 2000

In order to examine the determinants of new product success, 217 winning products in Korean market are analyzed with a focus on merchantability. For the purpose of the analysis, dimensions of products are classified into function, aesthetics, economy, safety, usability, reliability, brand image, assurance, distribution channel, advertisement, DFE(desing for the environment). The major dimensions of sinning products were identified for each category of the products. The results this study would be a cue to the future direction of new product development.

• Journal of Microbiology and Biotechnology
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• v.10 no.2
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• pp.176-180
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• 2000

Three polyene macrolide antibiotics including two new compounds were isolated from the culture mycelia of a Streptomyces species. The structures of these metabollites were determined as elizabethin, a previously reported 28-membered macrolide and two analohs, using combined spectroscopic methods. These compounds exhibited antifungal activity and cytotoxicity against a juman leukemia cell.

• Proceedings of the Polymer Society of Korea Conference
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• 2006.10a
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• pp.152-152
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• 2006

Polyolefins show a very healthy growth rate among commodity polymer resins due to their low feedstock prices, recyclable and environmentally friendly characteristics and easily controllable performances. Capacity investment in polyolefin field is now moving from technology region to consumer region and feedstock region. Therefore, key success factors for polyolefin business in the other region such as Korea are cost reduction, development of highly value-added products and new applications and substitution of PVC, PS, PET and other EPs. To add additional value to commodity polyolefin products, high level of platform technology such as catalyst, process and structure-properties relationship is needed. Progress on polyolefin products has been very closely related to catalyst and process technology. According to this trend, SK Corporation has devoted a lot of research effort into development of new value-added polyolefin products based on the proprietary technology platform.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1996.06c
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• pp.171-190
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• 1996

Quality evaluation of agricultural products has been a subject of interest to many researches for many years. As a results, several nondestructive techniques for quality evaluation of agricultural products have been developed. These methods are based on the detection of various physical properties that correlate well with certain quality factors of the products. This paper presents an overview of various quality evaluation techniques that are based on one of the following properties : density, firmness , vibration characteristic , X-ray and gamma ray transmission, optical reflectance and transmission , electrical properties, aromatic volatile emission, and nuclear magnetic resonance (NMR). The sophistication of nondestructive methods has evolved rapidly with modern technologies. The use of various modern image acquisition techniques, such as solid state TV camera, line-scan camera, X-ray scanning , ultrasonic scanning and NMR imaging, in conjunction with image-processing te hniques has provided new opportunities for researchers to develop many new and improved techniques for nondestructive quality evaluation of agricultural products.

• Natural Product Sciences
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• v.21 no.4
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• pp.237-239
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• 2015

Sarcotragin C (1), a new sesterterpene metabolite was isolated from a Sarcotragus sp. sponge collected from Chuja Island, Korea. On the basis of the combined spectroscopic analyses, the structure of this compound was determined to be a linear norsesterterpene containing a leucine-derived ${\gamma}-lactam$ moiety. This compound exhibited moderate cytotoxicity against K562 and A549 cell-lines.

• Natural Product Sciences
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• v.24 no.4
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• pp.284-287
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• 2018

A new isoprenylated acetophenone, acronyculatin P (1) as well as two known compounds, 3',5'-diisoprenyl-2',4'-dihydroxy-6'-methoxyphenylethanone (2) and 3'-isoprenyl-2',4',6'-trihydroxyphenylethanone (3) were isolated from the stem bark of Acronychia pedunculata (L.) Miq. The structures were determined by HRESIMS, 1D and 2D NMR. The inhibitory activity of the isoprenylated acetophenone derivatives against murine leukemia P-388 cells showed compound 1 moderate activity with $IC_{50}$ $15.42{\mu}M$.

• Natural Product Sciences
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• v.28 no.2
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• pp.58-61
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• 2022

Three isoprenylated flavanones were isolated from the leaves of Flemingia lineata (L.) Aiton. Among them are two new flavanones, flemilineatins A and B (1-2), along with 6-isoprenyl eridioctyol (3). Their structures were determined using HRESIMS data and NMR spectra. Flavanones 1 - 3 were assayed in the HeLa cancer cells. Compound 1 showed moderate activity with an IC₅₀ value of 11.2 μM.

• Natural Product Sciences
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• v.28 no.1
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• pp.40-43
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• 2022

Three isoprenylated flavanones were isolated from the leaves of Flemingia lineata (L.) Aiton. Among them are two new flavanones, flemilineatins A and B (1-2), along with 6-isoprenyl eridioctyol (3). Their structures were determined using HRESIMS data and NMR spectra. Flavanones 1-3 were assayed in the HeLa cancer cells. Compound 1 showed moderate activity with an IC₅₀ value of 11.2 μM.

• Journal of the Korea Furniture Society
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• v.23 no.3
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• pp.252-260
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• 2012

Cultural products, applying the design elements of cultural heritage Bekuje content of the product, we chose the useful material that can be used on a desk stand in the smart-phone Sticky Notes (Post-it) for use in modern life. The goal of the development design, developed in the design and excavation element modeling can be taking advantage of the characteristics of traditional decor come connected by a pattern of Baekje, eggplant in harmony with modern life, a new sense was harmony, design. He stressed the beauty of decorative molding to apply discriminatory morphological changes associated with each, a unique pattern of human pattern Jinmyosu Bekuje was elected to the motif of cultural property. You can also use a visual representation of the beauty obviously sophisticated pattern that appears frequently in Baekje, was also emphasized inheritance and traditions of Korea. We also attempted a new way to make sure we can diversify and whether it is possible as a new form, enhance the value of products, from concept to molt general existing tourism products.