• Journal of the Korea Institute of Military Science and Technology
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• v.24 no.1
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• pp.144-150
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• 2021

This study was designed to evaluate the prophylactic efficacy of a combinational patch system containing physostigmine and procyclidine against sarin and soman using guinea pig. The median lethal dose values of two nerve agents were calculated by a probit analysis of deaths occurring within 24 h. In this study, the values of median lethal dose of sarin and soman were determined to be 33.0 and 26.7 ㎍/kg in guinea-pigs, respectively. The guinea pigs treated with a prophylactic patch(4×5 ㎠) for 24 h were 100 % protected against a challenge of 1.5 LD50. The combinational KMARK-1(atropine and 2-PAM) and prophylactic patch were more effective than a single KMARK-1, a combination of pyridostigmine and KMARK-1 significantly. Epileptiform seizures in the guinea pigs treated with the combinational antidotes led to neuropathological changes, in comparison with intact feature of brain of the animal treated with the patch.

• Proceedings of the Korea Contents Association Conference
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• 2011.05a
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• pp.289-290
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• 2011

많은 사람들은 낮선 지역을 여행하면 대개 그 지역의 유명한 음식이 무엇인지 한번 먹어봤으면 하는 욕구를 가진다. 또 고유한 전통식을 제대로 만들어 파는 곳이 어디인지, 외국어로 쓰여진 메뉴판을 해독하거나 특정 음식을 어떻게 주문해야 하는지 난감한 경우에 처한 경우도 많다. 본 연구는 이런 어려움과 아쉬움을 해결하기 위하여 개발된 모바일용 애플리케이션의 제작 과정을 통하여 요리와 음식문화가 어떻게 상업성이 있는 콘텐츠로 가공, 개발되는지의 모델을 제시하고자 한다. 이 콘텐츠는 10국에 현재 거주하거나 장기 거주한 적이 있는 다수의 음식 전문가들이 언어, 문화, 식품과 음식에 대한 지식을 공유하는 집단 지성 체계로 협력 제작하였기에 다양한 지역, 풍성한 아이템, 깊이 있고 정확한 정보라는 양적, 질적 수준을 모두 충족시켜 유저들의 호응을 끌어냈다는 점에서 앞으로 개발될 많은 앱용 문화 컨텐츠의 제작 모델 역할을 하리라 생각된다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.18 no.8
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• pp.1051-1058
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• 1993

This paper points out some weakpoints in the "A Study on Public Key Cryptosystem for Computer Communication Networks" proposed by Gi Jun Ku at KICS 92-22('92-3 Vol.17 No.3) . This public key cryptosystem based on polynomials over finite rings is not strong against cipertext-only-attack. This paper indicate the insecureness of the proposed a public key cryptosystem.ptosystem.

• Toxicological Research
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• v.11 no.2
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• pp.229-234
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• 1995

This study was carried out to evaluate the cytotoxicity of cadmium on 3T3 fibroblast and to develop the antidote on 3T3 fibroblast which was injuried by $IC_{50}$ of cadmium. The groups for repaired effects were divided into 7 groups such as medium alone treated group. Cadmium treated $IC_{50}$ groups and 5 experimental groups $(IC_{50}$ cadmium plus $10^{-4}$ concentration of each methanol fraction). After incubation for 48 hrs in the same conditions, MTT (tetrazolium MTT), NR (neutral red) and SRB (sulforhodamine B protein) assay were measured. Light microscopic observations were also investigated. The ethyl acetate fraction of Perilla frutescens showed significantly repaired effect against cadmium cytotoxiclty and this fraction inhibited critical cell regeneration in light microscopy.

• Toxicological Research
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• v.11 no.2
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• pp.235-239
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• 1995

This study was conducted to investigate the metallothionein (MT) induction by Panax ginseng C. A. Meyer in cadmium chloride intoxication. The results were as follows: Generally, detoxicatlon effects by Panax ginseng C. A. Meyer extract increased proportionally to the increase of cadmium concentrations. When a 8 mg/g dosage of cadmium was administered, formation of the cadmium and EDTA complex showed the highest antitoxic effect. Also, when a 4 mg/g dosage of cadmium was administered, Panax ginseng C. A. Meyer extract showed the highest antitoxic effect in metallothionein induction. According to the above results, Panax ginseng C. A. Meyer extract administered with cadmium increased metallothionein concentration and decreased the toxicity of cadmium in liver.

• Toxicological Research
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• v.12 no.1
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• pp.35-39
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• 1996

This study was conducted to investigate the antitoxic component in methanol fraction of Lonicerae fios. The results were as follows: 1. When a 500 ppm of water soluble fraction of Lonicerae flos was administered, it showed the highest antitoxic effect. 2. Generally, detoxication effects of methanol fraction of Lonicerae fios increased. 'When the ethyl acetate soluble fraction of Lonicerae fios was administered, it exhibited the highest antitoxic effect against the toxicity of cadmium in spleen.

• Toxicological Research
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• v.12 no.1
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• pp.41-46
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• 1996

This study was performed to investigate the antitoxic component in methanol fraction of Lonicerae fios. The results were as follows: 1. When a 500 ppm of water soluble fraction of Lonicerae flos was administered, it showed the highest antitoxic effect. 2. Generally, detoxication effects by methanol fraction of Lonicerae fios increased. When the ethyl acetate soluble fraction of Lonicerae rios was administered, it exhibited the highest antitoxic effect against the toxicity of cadmium in Liver. 3. The combined administration of cadmium and methanol fraction of Lonicerae rios significantly increased metallothionein in liver compared to administration of cadmium only. This phenomenon was more remarkable when the ethyl acetate soluble fraction of Lonicerae fios was administered with cadmium chloride.

• Korean Journal of Weed Science
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• v.5 no.2
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• pp.175-186
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• 1985

Research situation and recent research activities of the RDA of Korea were reviewed and summarized for rice nurserybed. Sixty five percent of total 784 weed research items were carried out as rice research while only 6 percent was belonged to nurserybed within rice research. The floristic composition based on the degree of dominance significantly affected by herbicide properties, type of nurserybed and seeding itself. Herbicidal phytotoxicity of currently used several herbicides was greatly dependent upon the covering, absorption, germination, and irrigation regimes. The new safening agent "CGA 123 407" (4,6-dichloro-2-phenyl-pyrimidine) permited the safe application of pretilachlor (2-chloro-2',6-diethyl-N-(2-propoxyethyl) acetanilide) as a pre-emergence herbicide without reducing herbicidal efficacy. Several new herbicides, pyrazolate (4-(2,4-dichlorobenzoyl)-1,3-dimethylpyrazol-5-yl-p-toluenesulphonate), SL-49 (1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-phenacyloxy-pyrazole) MY-93 (S(1-methyl-1-phenethyl)-piperidine-1-carbathioate) and DPX-84 ((methyl 2- ((4,6-dimethoxypyrimidin-2-yl) amino-carbonyl) aminosulfonylmethyl)) benzolate)) performed satisfactorily in terms of safety and herbicidal efficacy for both surface covered and surface pressed nurserybed after herbicide application and thus expected very significant contributions not only for all kind of nurserybeds but also for direct seeding.

• Journal of The Korean Society of Clinical Toxicology
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• v.11 no.1
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• pp.9-18
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• 2013

Purpose: Antidotes for toxicological emergencies can be life-saving. However, there is no nationwide stocking and delivery system for emergency antidotes in Korea. We report on a two-year experience of a nationwide stocking and delivery trial for emergency antidotes at emergency departments in Korea. Methods: An expert panel of clinical toxicologists reviewed and made a list of 15 stocked antidote. These antidotes were purchased or imported from other countries and delivered from 14 antidote stocking hospitals nationwide 24 hours per day, seven days per week. Results: From August 1, 2011 to April 30, 2013, 177 patients with acute poisoning, with a median age of 48.5 years, were administered emergency antidotes. The causes of poisoning were intentional in 52.0% and 88.0% were intentional as a suicide attempt. Regarding clinical severity, using the poisoning severity score, 40.7% of patients had severe to fatal poisoning and 39.0% had moderate poisoning according to clinical severity. The most frequent presenting symptom was neurologic deficit, such as altered mentality (62.7%). alerted mentality (62.7%). Emergency antidotes were administered as follows: methylene blue (49 cases), flumazenil (31), N-acetylcysteine (25), glucagon (17), 100% ethanol (15), cyanide antidote kit (12), anti-venin immunoglobulin (5), pyridoxine (4), hydroxocobalamine (2), and deferoxamine (1). The median time interval from antidote request to delivery at the patient's bedside was 95 minutes (interquartile range 58.8-125.8). Conclusion: Findings of this study demonstrated the possibility of successful operation of the nationwide system of emergency antidotes stocking and delivery in Korea.

• Journal of Aquaculture
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• v.11 no.1
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• pp.11-17
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• 1998

Variations of hepatocyte in the larval liver of grouper, Epinephelus akaara wre examined to understand the effect of starvation during the first feeding period, 3 to 5 days after hatching. Total length of the fed larvae increased from the 5th day after hatching, although no significant difference between the fed and starved larvae was found untill the 4th day after hatching. Survival rate of the starved larvae decreased from the 4th day after hatching, and almost all of the larvae died by the 5th day after hatching. Nuclear size of hepatocyte in the starved larvae starterd to decrease from the 4th day after hatching. The sizes by 4th and 5th days after hatching in the starved larvae were 1.4 to 1.9 times smaller than those in the fed ones. Hepatocytes in the starved larvae showed irregular morphology in which the nuclei were irregularly shrunk and highly compacted from the 4th day, while hepatocyte nuclei in the fed ones maintained their uniform features during the whole experimental period. These results implied that the initial larval food should be supplied at least within the 4th day after hatching. Also, it suggested that the size of hepatocyte nucleus might be and indicator of starvation for wild and cultured grouper larvae.