• Convergence Security Journal
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• v.8 no.4
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• pp.57-63
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• 2008

The purpose of the research is to intended to help Korean military officers establish information system security structure. Information security is a critical issue for digital information warfare. Advanced countries such as U.S. and Japan have developed a new military security strategy for future information warfare. The readiness of Korean Army, however, is far behind those countries. This paper provides a systematic information security structure for Korean Army, which is a result of the research through a group decision making process.

• Animal Systematics, Evolution and Diversity
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• v.12 no.2
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• pp.101-105
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• 1996

A new genus and species belonging to the family Aphodiidae (Coleoptera) Koreoxyomus koreanus gen. et sp. nov., is described from Korea. And a genus known from Japan, Mozartius is discussed because it is almost same taxa with present new genus but its original description is not stable taxonomically.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2009.04a
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• pp.333-338
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• 2009

우리나라는 건축물 화재 및 지진으로 인한 화재의 위험성이 증가해 가면서 시가지 화재에 대한 위험성이 점차 늘어나고 있다. 하지만 이에 대한 대응책은 미비한 실정이다. 반면 일본의 경우는 과거의 화재사례를 토대로 시가지 화재에 대한 대응책 및 시뮬레이션 개발이 수행되었으며 이를 통해 각 지구의 화재위험성을 평가하여 대책을 마련하고 있다. 본 연구에서는 이러한 시가지 화재 시뮬레이션의 화염전파 모델에 관하여 소개함으로서 향후국내의 시뮬레이션 개발에 있어서 기본적인 방향을 제시하고자 하였다.

• Monthly Duck's Village
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• s.237
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• pp.6-15
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• 2023

최근 고병원성 조류인플루엔자(AI)의 확산세가 심상치 않다. 미국은 지난해 1월 이후, 47개 주의 가금농장에서 805건이 발생해 5,800만 마리의 가금을 살처분했고, 유럽은 작년 10월 이후 독일, 프랑스 등 24개국에서 고병원성 AI 603건이 발생했다. 일본도 작년 10월 이후 82건이 발생하여 역대 최대 발생 건수를 기록했다. 우리나라도 지난해 10월 17일 경북 예천군 소재 종오리 농장에서 고병원성 AI가 처음 발생한 이후 가금농장에서 70건이 넘는 AI가 발생했다. 야생조류에서는 가장 이른 시기인 지난해 10월 10일에 검출됐고, 항원도 역대 두번째로 많은 174건이 검출됐다. 정부는 야생조류의 개체수가 늘어나는 등 고병원성 AI 위험도가 높아짐에 따라 특별방역기간을 한달 더 연장하고 방역을 위해 총력을 기울였다. 그럼에도 불구하고 지난 4월 1일 전남 나주의 육용오리 농장에서 고병원성 AI가 발생했다. 점차 위험도가 높아지고 있는 AI, 무엇을 준비해야 할까.

• Applied Microscopy
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• v.39 no.4
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• pp.355-363
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• 2009

The purpose of this study was to demonstrate the effect of Momordica Charantia L. water extracts, one of the natural chelator, on the biochemical and enzyme activity changes in the rats liver and kidney caused by lead acetate. Rat approximately 250 g in weight were grouped into the control, lead acetate treated, and the Momordica Charantia L. boiling water extracts treated after lead acetate groups. Lead acetate (1,000 ppm) and Momordica Charantia L. water extracts (5%, 10%) were delivered drinking water. Serum AST, ALT and BUN were measured, histological alteration of liver and kidney were examined by light microscopy. Momordica Charantia L. extract group was decreased serum AST, ALT and BUN level induced by lead. Optical observations of liver tissue, lead group were observed necrosis of hepatic cells and infiltration of inflammatory cells, but Momordica Charantia L. extract group was observed only slight infiltration of inflammatory cells around the central vein. Optical observations of kidney tissue, lead acetate induced atrophy and necrosis of glomerulus and infiltration of inflammatory cell around renal tubule. For the group treated with Momordica charantia L. extract, the glomerulus was similar to the control, some around the renal tubule was observed infiltration of inflammatory cells. In conclusion, Momordica Charantia L. water extract may protect the lead-induced toxicity on liver and kidney.

• Korean Journal of Plant Taxonomy
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• v.44 no.4
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• pp.261-275
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• 2014

Although a few recent taxonomic studies focusing on infraspecific taxa in each species of Isodon have been reported, a detailed taxonomic revision of the Korean Isodon taxa has yet to be performed. We investigated the morphological characters of Korean Isodon based on approximately 600 herbarium sheets from major herbaria in Korea and Japan. We identified characters which distinguish seven Korean Isodon taxa and created a key to Korean Isodon based on the results from this study and on recent studies of the Korean Isodon taxa. The following unique characters for several taxa were recognized: 1) dense non-glandular hairs in stems for I. inflexus var. canescens (over 70 ea/mm on one side of the stem), 2) dense glandular hairs on the abaxial surface of the leaf for I. serra (over $40ea/mm^2$), 3) protruding pistils and stamens from the corolla with the length of the protruding part longer than that of the lower lobe of corolla for I. japonicus, and 4) the presence of non-glandular hairs on the entire surface of the fruit of I. inflexus var. microphyllus. Based on this study, we recognized that there are four species, two varieties, and one forma of Isodon taxa in Korea.

• Korean Journal Plant Pathology
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• v.3 no.3
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• pp.174-179
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• 1987

Four thousand eight hundred and eighty five isolates of Pyricularia oryzae were obtained from the diseased rice specimens collected from various areas of Korea for race identification during 1978 - 1985. A total of 15 races inculding 6 races pathogenic to Tongil lines, 2 T-races, 5 C-races and 2 N-races was identified using a old Japanese differential set during 1978-1980. Since 1981, number of races identified by a Korean differential set was 18 races which were composed of 11 KI-races pathogenic to either Tongil lines or Japonica cultivars and 8 KJ-races pathogenic to only Japonica cultivars. The prevalent race was $N-2^{+t}$ during 1978-1979 and race KJ-301 since 1980, respectively. Races KI-315a and KI-315b pathogenic to most of Tongil lines were identified in 1983. being widely distributed to date. Races KJ-105 and KJ-201 pathogenic to the cultivars possessing resistance genes Pi-k and Pi-i were prevalent in Gangweon province, whereas race KI-315b was prevalent in Chungbug and Jeonnam districts.

• Restorative Dentistry and Endodontics
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• v.31 no.1
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• pp.30-35
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• 2006

To evaluate the change of working length with various instrumentation techniques in curved canals, working length and canal curvature were determined before and after canal instrumentation in buccal or mesial canals of extracted human molars. Stainless steel K-files ($MANI^{(R)}$, Matsutani Seisakusho Co. Takanezawa, Japan), nickel-titanium K-files (Naviflex $NT^{TM}$, Brassier, Savannah, USA) , $ProFile^{(R)}$, and ProTaper (Dentsply-Maillefer, Ballaigues, Switzerland) were used to prepare the canals with crown-down technique. In two hand instrumentation groups coronal flaring was made with Gates Glidden burs. Apical canals were instrumented until apical diameter had attained a size of 30. Positional relation between the tooth apex and the $\#10$ K-file tip was examined by using AutoCAD 2000 (Autodesk Corp., San Rafael. CA, USA) under a stereomicroscope before and after coronal flaring, and after apical instrumentation. Degree of canal curvature was also measured with Schneider's method in radiographs. Data of working length and canal curvature changes were statistically analyzed with one-way ANOVA and Tukey's studentized range test. Working length and canal curvature were decreased significantly in each step in all instrumentation groups. Coronal flaring using Cates Glidden burs in hand instrument groups and whole canal instrumentation using stainless steel hand K-files caused significantly more working length change than in ProFile instrumentation group (p<0.05). The result of this study demonstrates that all of the above kinds of instrumentation in curved canals cause reduction of working length and canal curvature at each instrumentation steps, and hand instrumentation causes more working length change than ProFile.

• Korean journal of applied entomology
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• v.14 no.4 s.25
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• pp.199-204
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• 1975

One thousand forty-four isolates of Pyricularia oryzae obtained during the period 1962-1974 front blast-infected rice samples from all rice-growing areas of Korea were tested on the Japanese differential set of twelve rice varieties. Twenty-seven races of the fungus were differentiated. The number of races falling in groups T,C and N were 4, 15 and 8, respetively. Since only Japonica type varieties had been cultivated widely before 1966, N-race groups were found to be most Prevalent with a frequency of about $85\%$ of the total isolates. After 1966, T-and C-race groups gradually increased to $21\%$ and $42\%$ respectively, as a result of the widespread cultivation of Tongil bred from a cross between IR8 x(Yukara x T(N)1. Before 1966, a few T, and C-race groups occurred only in the Suweon region; since 1966, most of the races differentiated have been uniformly distributed throughout the country regardless of region. The most prevalent races in Korea were N-2 and C-8. The variety Tetep was resistant to all races previously identified in Korea, but a new race (T-d) to which Tetep is susceptible has been found each year since 1973. It appears likely that races capable of attacking Indica types of rice will become increasingly prevalent and a programme of continuous screening is needed to detect new races as soon as they appear.

• Korean Journal of Food Science and Technology
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• v.4 no.2
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• pp.140-150
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• 1972

Using methods of principle component analysis and pattern of analysis. Korean food supply pattern and its change (1962-1969) have been compared whit those of other 40 countries. 1) Among the 4 groups classified on the first and second principle components, Korea belongs to the highest crop grain dependent group of Asia. Although Korea is identified as one of the highest crop consuming countries among the group, a significant increase in the consumption of fruits and vegetables is noticed during the period. 2) According to the pattern of numerics analysis Korean food supply pattern (1969) is similar with those of Japan (1949), philippines, Taiwan, while is quite apart from those of U.S.A., W. Germany, France and Australia. 3) During the period the food supply pattern of Korea has been changed significantly toward the more common locations on the world food supply pattern map. Yet the location is far from the desirable one and its moving direction is characteristic, differing not only those of Europian countries but also Asian neighborhoods. this unique pattern should receive a careful examination and thus proper measures should be undertaken to take care of optimal nation's nutritional requirements.