• Korean Journal of Medicinal Crop Science
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• v.22 no.2
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• pp.113-120
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• 2014

These studies were conducted to discriminate Cynanchum wilfordii, C. auriculatum, Metaplexis japonica, and Polygonum multiflorum by morphological characters. Cynanchum wilfordii, C. auriculatum, and Metaplexis japonica(Asclepiadaceae) were easily distinguished from Polygonum multiflorum by twining stem to the left, producing opposite leaves, having laticiferous stems and leaves at cutting cross-sectionally, and lacking lignification of the stem. Four species had different morphological characters of flower. Comparing four species to fruit type, three species of Asclepiadaceae had follicle, while Polygonum multiflorum had achene with three wings. Follicle shape was lanceolate, narrowly lanceolate, and widely lanceolate in C. wilfordii, C. auriculatum, and Metaplexis japonica, respectively. Whereas seed color of four species was dark brown similarly, seed shape and 1,000 seed weight were useful characters to discrimate between three species of Asclepiadaceae and Polygonum multiflorum. Shape and color of root were thickened and yellowish brown in C. wilfordii and C. auriculatum. They were thin and long and white in Metaplexis japonica, and fusiform and reddish brown in Polygonum multiflorum. They would be useful characters to distinguish Cynanchum spp., Metaplexis japonica, and Polygonum multiflorum, however, impossible characters to discriminate between C. wilfordii and C. auriculatum.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.7 no.2
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• pp.1-11
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• 2003

We suggest a method of $C^2$ surface extension with the aid of well-controlled functions. The extended surface is $C^2$ continuous along the old boundary. The function of the extension surface is obtained by replacing the monomials in the quadratic Taylor polynomial of the given surface-representing function by other functions subject to some boundary conditions. We present several sets of control functions. In order to illustrate our suggestion, it is shown that surfaces with a circular boundary and a square boundary can be extended using several base functions.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.23 no.1
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• pp.73-78
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• 2017

Background: The purpose of this study was to identify the effects of morphological Change of cervical spine to apply to neck retraction and extension regarding the straight deformity of cervical spine. Methods: A 40-year male subject with straight deformity of cervical spine participated in this study. The study subject underwent a cervical lateral radiography on the static position, neck retraction and neck extension on standing. Measurement method were using computer-based digital radiogram on a picture achieving computer system forthe centroid method, Cobb's angle and Jackson's angle. Results: Neck retraction was increased kyphosis on the C2-4 with lordosis on the C5-7. Neck extension was increased lordosis on the C2-7. Conclusions: These findings suggest that neck retraction was increased kyphosis and neck extension was increased lordosis based on the straight deformity of cervical spine. Therefore, we should be consider that neck extension exercise when increased lordosis for the patients of straight deformity of cervical spine.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.317-317
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• 2022

Seakso 5, a maize hybrid, was applied for variety in 2021 by Gangwon Agricultural Research and Extension Services in Korea. This variety was bred to produce a purple extract of com husk. It shows purple color in the husk and cob and contains abundant anthocyanins. In this study, to obtain basic data on purple com 'Seakso 5' husk extract (PCHE), a husk extract was prepared and the contents of vitamins, amino acids and fatty acids were analyzed. The Seakso 5 husks were extracted with 30% alcohol and concentrated, after adding dextrin to the concentrate, it was spray-dried to prepare an extract. The PCHE were analyzed for vitamins, amino acids, and fatty acids by referring to the Food Code. As a result, three types of vitamins were detected, and their contents were vitamin B₁ 0.14 mg/100g, vitamin B₂ 2.30 mg/100g, and vitamin C 11.32 mg/100g. A total of 15 amino acids were detected in the PCHE, including aspartic acid and glutamic acid, and the content of aspartic acid was the highest at 3.02 mg/g. Simultaneous analysis of fatty acids Among 37 types, saturated fatty acids were palmitic acid (C16:0), stearic acid (C18:0), monounsaturated fatty acids were oleic acid (C18:1(n-9)), polyunsaturated fatty acids were linoleic acid(C18:2(n-6)c) and a-Linolenic Acid (C18:3(n-3)) were detected. Among the detected fatty acids, the content of palmitic acid was the highest at 40.75 mg/100g. In the future, These analysis results will be used as reference data for temporary food ingredient applications by the Ministry of Food and Drug Safety.

• The KIPS Transactions:PartC
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• v.14C no.4
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• pp.321-330
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• 2007

This paper proposes a two-phase server login authentication system by XML-Signature schema extension to protect server's information resources opened on network which offer various web contents. A proposed system requests and publishes XML-based certificate through on-line, registers certificate extension information provided by CA(Certification Authority) to XCMS(XML Certificate Management Server), and performs prior authentication using user's certificate password. Then, it requests certificate extension information added by user besides user's certificate password and certificate extension information registered in XCMS by using SOAP message, and performs posterior authentication by comparing these certificate extension information. As a result, a proposed system is a security reinforced system compared with existing systems.

• Journal of Life Science
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• v.10 no.1
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• pp.61-67
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• 2000

An experiment was conducted for extension of shelf-life of cooked squid (Todarodes pacificus) using modified atmosphere packaging. The products were packed in a Ny/PE/LLDPE (0.015/0.045/0.040 mm) laminated film with air, vacuum, CO2 gas, and N2 gas, respectively, and then stored at 5$^{\circ}C$ and 2$0^{\circ}C$. Keeping qualities of the products were investigated by measuring moisture content, H, volatile basic nitrogen (VBN), viable cell count, thiobarbituric acid (TBA) value, peroxide value (POV) and color value. Good qualities of the products stored at 5$^{\circ}C$were maintained at least 9 days, 11 days, more than 35 days and 24 days in air, vacuum, CO2 gas and N2 gas packaging products, respectively. In cases of 2$0^{\circ}C$ storage, however, the shelf-lives of all the products were only one day. The shelf-life extension of the products were observed in CO2 ga>N2 gas>vacuum>air packaging in order.

• Journal of Mushroom
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• v.8 no.1
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• pp.33-36
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• 2010

The effect of wheat straw mix was tested to develop rice straw replacement media. The chemical contents were analysed after late fermentation. Nitrogen content and C/N ratio of the 20% wheat straw mixing medium were 2.2% and 16.7 and the only rice straw using medium were 2.0% and 17.9, respectively. When the 20% wheat straw mixing treatment was compared to the only rice straw medium, pinhead initiation period was shortened and the yield was increased as much as 30%. Therefore the 20% wheat straw mixing medium is expected to replace the rice straw medium.

• Research in Plant Disease
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• v.19 no.2
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• pp.121-123
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• 2013

The strains of Colletotrichum gloeosporioides, C. coccodes, C. acutatum isolated from black raspberry were pathogenic to apple and strawberry after dropping inoculation, but showed weak pathogenicity in hot-pepper and tomato. The anthracnose pathogens of C. gloeosporioides, C. orbiculare, C. acutatum isolated from apple, hot-pepper and pumpkin showed pathogenicity in black raspberry. Moreover, the anthracnose pathogens isolated from apple caused disease symptoms in non-wounded inoculation.

• Journal of Mushroom
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• v.12 no.3
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• pp.187-192
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• 2014

In order to breed a new P. eryngii cultivar with high temperature tolerance trait to cope with climate change, strains and cultivars were characterized at $20^{\circ}C$ that is $5^{\circ}C$ higher than normal condition followed by screening for the characteristics such as required days to harvest, quality and yield. Monokaryons from the selected strains were crossed. $Da-32{\times}KNR2322-15$ derived from the crosses between KNR2322 having characteristics of short growing day and Da($Ga5Na5-4{\times}KNR2312-7$) having charateristics of high guality and yield at $20^{\circ}C$, showed 14.9 days for harvest, 120.6 g yield, and 7.0 quality in the first trial. The strains were named as Taeyangsongi and cultivated on a large scale to compare with Kenneutari No. 2 at a mushroom farm. Yield of Taeyangsongi (109 g) was significantly different(P=0.001) from Kenneutari No.2. Quality of the new (6.6) and the reference cultivar (3.5) was also statistically different (P=0.001) The brightness of pileus of Taeyangsongi (59.5) was 10 points less than the reference cultivar due to which it has an inability to bear high temperature stress. Thus, PCR reactions with URP2 discriminated between Taeyansongi and reference cultivars (Keneutari No. 2 and Aeryni).

• Journal of Microbiology and Biotechnology
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• v.27 no.4
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• pp.775-784
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• 2017

A neutral xylanase (CcXyn) was identified from Coprinus cinereus. It has a single GH10 catalytic domain with a basic amino acid-rich extension (PVRRK) at the C-terminus. In this study, the wild-type (CcXyn) and C-terminus-truncated xylanase ($CcXyn-{\Delta}5C$) were heterologously expressed in Pichia pastoris and their characteristics were comparatively analyzed with aims to examine the effect of this extension on the enzyme function. The circular dichorism analysis indicated that both enzymes in general had a similar structure, but $CcXyn-{\Delta}5C$ contained less ${\alpha}-helices$ (42.9%) and more random coil contents (35.5%) than CcXyn (47.0% and 32.8%, respectively). Both enzymes had the same pH (7.0) and temperature ($45^{\circ}C$) optima, and similar substrate specificity on different xylans. They all hydrolyzed beechwood xylan primarily to xylobiose and xylotriose. The amounts of xylobiose and xylotriose accounted for 91.5% and 92.2% (w/w) of total xylooligosaccharides (XOS) generated from beechwood by CcXyn and $CcXyn-{\Delta}5C$, respectively. However, truncation of the C-terminal 5-amino-acids extension significantly improved the thermostability, SDS resistance, and pH stability at pH 6.0-9.0. Furthermore, $CcXyn-{\Delta}5C$ exhibited a much lower $K_m$ value than CcXyn (0.27 mg/ml vs 0.83 mg/ml), and therefore, the catalytic efficiency of $CcXyn-{\Delta}5C$ was 2.4-times higher than that of CcXyn. These properties make $CcXyn-{\Delta}5C$ a good model for the structure-function study of $({\alpha}/{\beta})_8$-barrel-folded enzymes and a promising candidate for various applications, especially in the detergent industry and XOS production.