• Food Science of Animal Resources
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• v.39 no.3
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• pp.520-520
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• 2019

• Proceedings of the Plant Resources Society of Korea Conference
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• 1993.08a
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• pp.14-20
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• 1993

We in anticancer drug development from natural resources have conceived and used a wide variety of experimental screening systems to support our efforts during the past 20 tears. Screens have been devided to address targets at the molecular, biochemical and cellular levels, both in vivo and in vitro. Screens have been essential for the experimental evaluation of the products from natural sources. In this congress, antitumor screening methods for deveol[ment of new drugs from natural sources and evaluation of their crude drugs are discussed.

• Journal of Ginseng Research
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• v.42 no.3
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• pp.270-276
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• 2018

Background: Notoginsenoside Ft1 is a promising potential candidate for cardiovascular and cancer disease therapy owing to its positive pharmacological activities. However, the yield of Ft1 is ultralow utilizing reported methods. Herein, an acid hydrolyzing strategy was implemented in the acquirement of rare notoginsenoside Ft1. Methods: Chemical profiles were identified by ultraperformance liquid chromatography coupled with quadruple-time-of-flight and electrospray ionization mass spectrometry (UPLC-Q/TOF-ESI-MS). The acid hydrolyzing dynamic changes of chemical compositions and the possible transformation pathways of saponins were monitored by ultrahigh-performance LC coupled with tandem MS (UHPLC-MS/ MS). Results and conclusion: Notoginsenoside Ft1 was epimerized from notoginsenoside ST4, which was generated through cleaving the carbohydrate side chains at C-20 of notoginsenosides Fa and Fc, and vinaginsenoside R7, and further converted to other compounds via hydroxylation at C-25 or hydrolysis of the carbohydrate side chains at C-3 under the acid conditions. High temperature contributed to the hydroxylation reaction at C-25 and 25% acetic acid concentration was conducive to the preparation of notoginsenoside Ft1. C-20 epimers of notoginsenoside Ft1 and ST4 were successfully separated utilizing solvent method of acetic acid solution. The theoretical preparation yield rate of notoginsenoside Ft1 was about 1.8%, which would be beneficial to further study on its bioactivities and clinical application.

• Journal of the Korean Home Economics Association
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• v.42 no.6
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• pp.137-149
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• 2004

This research analyzed the tasks performed by firm's consumer department, evaluation, and efficiency of those tasks. In addition, regression analysis was employed to find what factors influence the level of evaluation and efficiency of tasks performed by firm's consumer department. Research results summarized as follows. First, two thirds of the appropriate amount of resources and systems for the consumer department were equipped and the score of evaluating for consumer counseling tasks was high. Second, the amounts of resources and systems being equipped by the firm's consumer department were greater in insurance companies and firms with more employees, firms with 70% to 100% female employees in the consumer department, firms that listed their stocks, and firms with the consumer department located higher than the second floor. Third, the score of evaluating the tasks performed by the firm's consumer department was greater in firms that listed their stocks, owned great resources and systems, and had a higher degree of work satisfaction. Finally, the task of consumer counseling performed by the consumer department turned out to be effective in firms that listed their stocks, were recently established, and owned necessary resources and systems.

• Proceedings of the Korea Water Resources Association Conference
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• 2005.09b
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• pp.995-996
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• 2005

• Journal of the Korean Institute of Landscape Architecture
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• v.29 no.4
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• pp.22-22
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• 2001

• Journal of Korea Water Resources Association
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• v.33 no.S1
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• pp.779-783
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• 2000

• Journal of Korean Society of Archives and Records Management
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• v.3 no.1
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• pp.111-127
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• 2003

Web-based information resources should be managed and used methodically in the same manner as the paper-based resources are managed and used. It is necessitated by the prevalence of web-based delivery of a variety of information. To develop a web-based digital collection, it is critical to establish a set of standardized evaluation criteria for web-resources. The evaluation criteria needs to include authority, trustworthy, reliability, functionality, relatedness, accessibility, structure, design, user support, and security related matters. However, it is also necessary to have certain flexibility to either emphasize or include particular evaluation criteria to reflect varying characteristics of the web resources especially for the purpose of developing an effective digital collection. In addition, it is essential to review the evaluation criteria with respect to value, demand, duplication prevention, and intellectual property, which are relevant to the web-based digital collection development. Finally, various strategies were suggested as means to develop more effective web-based digital resource collection. These strategies include organizing a selection committee to ensure the objectivity and consistency in web-resource evaluation; developing a model for web-based digital resource collection; sharing new standards, protocols, markups, and metadata with other digital libraries; and developing user-centered digital resource collection.

• 축산식품과학과 산업
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• v.7 no.1
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• pp.79-86
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• 2018

• Magazine of the Korean Society of Agricultural Engineers
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• v.45 no.6
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• pp.96-108
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• 2003

Agricultural water occupies the largest portion of total water use in Korea, and generally researches on the development of agricultural water have been stressed on the demand of agricultural water itself. But it is unavoidable to change a policy from the development of water resources to cope with the increase of water demand to the effective management of existing water resources. Evaluation of the decrepitude of irrigation facilities and their reasonable maintenance are important for the effective supply and use of agricultural water. Therefore it is necessary to develop evaluation technique that diagnoses the current condition of irrigation canals and suggest a countermeasure to improve the found problems. 25 items in 6 classes were selected for the evaluation of irrigation canal systems, and the weighted value between the items was calculated using AHP (Analysis Hierarchy Process) method. The current condition of the irrigation facilities was evaluated from the class evaluation marks, and ranking was decided from the total marks between the projects, and finally the priority of the project for the improvement was given.