• Journal of Information Management
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• v.25 no.2
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• pp.31-60
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• 1994

General branches of science and engineering now enjoy being substantially repleted in their databases. However, comparing the databases of such branches with chemistry or medical science and pharmacology, the strata do not seem to be fully equipped yet. As a matter of fact, the variety of such databases in practical application is still somewhat limited. Moreover, these databases are, with a few exceptions, prepared abroad. In this paper varieties and features of databases now available on the market for each database service system, as well as crucial points for practical use are introduced. At present, it is focussed more or less on the application of bibliographical information. Yet, it would be inevitable to equip them with factual data in order to increase the efficiency of research and development activities. Of course, it is still not easy to solve problems for better profitability and higher technical achievement. The author wishes to emphasize the necessity to fully equip the commercial factual database for said branches as quickly as possible.

• Smart Media Journal
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• v.2 no.1
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• pp.8-16
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• 2013

The significant enhancement of the edge portion of computer networks including user-side machines and last mile network links encourages the research of the overlay network based data dissemination systems. Varieties of overlay network based data dissemination systems has distinct purposes, and each of them has a proper structure of an overlay network and a efficient communication protocol. In this paper, overlay network based data dissemination systems for Flash Dissemination, whose target is the distribution of relatively small size data to very large number of recipients within very short time, are explored. Mainly two systems, RECREW and FaReCAST, are introduced and analyzed in the aspects of design considerations for overlay networks and communication protocols. According to evaluations for flash dissemination scenarios, it is observed that the proposed overlay network based flash dissemination systems outperforms the previous overlay network based multicasting systems, in terms of the reliability and the dissemination delay. Moreover, the theoretical analysis of the reliability of data dissemination is provided by analysing FaReCAST.

• Korean Journal of Plant Resources
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• v.14 no.3
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• pp.277-285
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• 2001

This study was conducted to know about the distribution of naturalized plants growing in Jeiu Island. A field survey and flora lists of relevant literatures were also investigated. The results obtained from this study were as follows: Definition of naturalized plants was determined in this study as “non-native species in Korea which have been introduced anthropologically or naturally and can reproduce and survive in wild habitats by themselves.” It was suggested that the number of naturalized plants in Jeju Island were 31 families, 111 genera, 188 taxa including 178 species, 10 varieties. Family Compositae and Gramineae covered 23% and 14% of naturalized plants, respectively. The number of naturalized plants in Jeju Island were 188 taxa ; 97 taxa in the whole south Korea,39 taxa in the southern part of Korea,15 taxa in the central part of Korea, and 37 taxa only in Jeju.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.39 no.1
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• pp.98-102
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• 1994

This study was conducted to obtain basic informations on the starch quality improvement breeding of Job's tears. Starch, amylose, gel consistency and amylogram characteristics of seeds were investigated in 36 varieties of domestic and introduced Job's tears. Starch content was distributed between 50.9 and 78% with a mean of 60.5%. The variation observed in amylose content ranged from 0 to 7.2% with the average was 5.2%. Kangsanjong, Chujeonjong, Chungrijong showed medium gel consistency. However, many Job's tears tested showed soft gel consistency. Varietal differences of amylogram characteristics was also found at break down. In general, job's tear starch showed lower value of setback.

• Research in Plant Disease
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• v.29 no.3
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• pp.205-219
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• 2023

Anthracnose caused by Colletotrichum spp. is a major disease of strawberry plants worldwide. The anthracnose of strawberries in Korea has occurred in most cultivated strawberry varieties since its first report in 1990. Although many studies and efforts have been made to control the disease, anthracnose continues to affect strawberry yields in Korea. In this review, we introduced various management methods to control anthracnose in strawberries, such as identifying pathogens and environmental factors involved in this disease, understanding the importance of latent infection, and developing diagnostic techniques and control methods. Through this review, we propose that researchers can elucidate a comprehensive and practical approach to control anthracnose by understanding this disease and developing strategies to prevent its spread, ultimately benefiting strawberry farmers.

• Korean Journal of Agricultural Science
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• v.48 no.4
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• pp.1003-1013
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• 2021

Thioredoxin (TRX) protein is an antioxidant responsible for reducing other proteins by exchanging cysteine thiol-disulfide and is also known for its anti-allergic and anti-aging properties. On the other hand, epidermal growth factor (EGF) is an important material used in the cosmetics industry and an essential protein necessary for dermal wound healing facilitated by the proliferation and migration of keratinocytes. EGF also assists in the formation of granulation tissues and stimulates the motility of fibroblasts. Hence, genetically modified soybeans were developed to overexpress these industrially important proteins for mass production. A single-dose oral-toxicity-based study was conducted to evaluate the potential toxic effects of TRX and EGF proteins, as safety assessments are necessary for the commercial use of seed-specific protein-expressing transgenic soybeans. To achieve this rationale, TRX and EGF proteins were mass purified from recombinant E. coli. The single-dose oral-toxicity tests of the TRX and EGF proteins were carried out in six-week old male and female Institute of Cancer Research (ICR) mice. The initial evaluation of the single-dose TRF and EGF treatments was based on monitoring the toxicity signatures and mortality rates among the mice, and the resultant mortality rates did not show any specific clinical symptoms related to the proteins. Furthermore, no significant differences were observed in the weights between the treatment and control groups of male and female ICR mice. After 14 days of treatment, no differences were observed in the autopsy reports between the various treatment and control groups. These results suggest that the minimum lethal dose of TRX and EGF proteins is higher than the allowed 2,000 mg·kg^-1 limit.

• Korean Journal of Plant Resources
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• v.37 no.1
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• pp.93-99
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• 2024

As a result of low temperature exotherm (LTE) measurement targeting the buds of 13 grape cultivars that are recently cultivated or introduced in Korea, 'Shooting Star', 'Muscat Bailey A', 'IFG-6', 'Vanessa Seedless', 'Summer Crispy', 'Shine Muscat', 'Jelly Pop', 'Campbell Early', 'Ruby Seedless', 'My Heart', 'Kyoho', 'Thompson Seedless', and 'Violet King' in order of being resistant to low temperatures. The LTE value was the lowest at -18.9℃ in 'Shooting Star' and the highest at -12.5℃ in 'Violet King'. Through these results, it can be used as basic data to determine whether or not cultivation by region is possible efficiently by comparing data based on 'Campbell Early' and 'Kyoho', which are presented as standard varieties for domestic cultivation.

• Clinical Nutrition Research
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• v.13 no.2
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• pp.108-120
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• 2024

The study aimed to investigate the basic data to derive plans for snack provision to improve the nutritional status of older adults living in long-term care facilities (LFs) or long-term care hospitals (LHs). The 252 respondents (118 from LHs and 134 from LFs) were included in the study. The questionnaire of nationwide cross-sectional survey was developed by the authors and registered dietitians. The written questionnaire was sent to the food service managers across 800 LFs or LHs. The online survey was introduced using the online platform and network site for dietitians. More than 70% of live-in and non-live-in LFs provided snacks, which were mainly provided one to two times a day. Most institutions provided fruits one to three times a week. The main considerations when providing fruit were in the order of residents' preference, cost, and ease of consumption. The reasons for not serving fruit included cost and differences in the residents' eating and mastication abilities. Most institutions also provided dairy products at a frequency of one to three times a week. The reasons for not serving dairy products included cost and the lack of awareness of the need to provide them. To improve the quality of life and the offer benefits of fruits and dairy products to older people, efforts are needed to propose a plan to expand the provision of snacks in appropriate quantities and varieties.

• Korean Journal of Plant Resources
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• v.29 no.2
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• pp.204-224
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• 2016

This study was carried out to investigate the vascular plants of the protected area for forest genetic resource conservation in the Korea national Baekdudaegan arboretum. The vascular plants collected 12 times (from April 2007 to August 2014) were consisted of total 569 taxa; 89 families, 289 genera, 489 species, 5 subspecies, 66 varieties and 9 forms respectively. The 20 taxa of Korean endemic plants and 21 taxa of Korean rare plants were investigated. The floristic regional indicator plants found in this area were 112 taxa comprising 2 taxa of grade V, 8 taxa of grade IV, 23 taxa of grade III, 40 taxa of grade II, 39 taxa of grade I. The introduced and naturalized plants were counted as 22 taxa, therefore naturalized ratio was 3.8%. 577 taxa listed consists of 223 taxa (39.2%) of edible plants, 168 taxa (29.5%) of medicinal plants, 202 taxa (35.5%) of pasture plants, 58 taxa (10.2%) of ornamental plants, 26 taxa (4.6%) of timber plants, 5 taxa (0.9%) of fiber plants and 4 taxa (0.7%) of industrial plants.

• Journal of Life Science
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• v.25 no.11
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• pp.1244-1254
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• 2015

Naturalized plants were identified and recorded in Busan city based on field surveys and related literature. These plants consisted of 156 taxa in total, belonging to 31 families, 95 genera, 147 species, and 9 varieties. The Compositae had the highest diversity among 31 families, with 44 taxa, followed by Gramineae, with 24 taxa, and Leguminosae, with 10 taxa Among the plants, 68.6% (107 taxa) were annuals and biennials, and 30.1% (47 taxa) were perennials. There was one shrub (Amorpha fruticosa) and one tree (Robinia pseudoacacia). Naturalized degree 5 plants, as common and abundant plant, founded 26 taxa (96.3%) were most highly ratio from Korean naturalized plants. According to the results of the analysis based on place of origin, 50 (32.1%) taxa were from Europe, and 48 (30.8%) taxa were from North America. Epecophyten was the most common of the naturalized plants, with 123 taxa Sixty-six (42.3%) taxa were introduced during period 1, and 15 (9.6%) were introduced during period 4. Ergasiophygophyten (50.6%) and Kenophyten (32.1%) were the dominant plants in these introduction periods. In conclusion, Busan city acts as a conduit for the introduction of naturalized plants. A sustainable management and monitoring strategy may be needed to prevent the introduction and naturalization of plants.