Investigation of the April 2000 forest fire damage in Kang-won Province, Korea, using RADARSAT data

Kang, Sung Chul,Seo, Jin Won,Lee, Tae Hee,Park, Sang Eun,Hong, Suk Young,Moon, Wooil M. 대한원격탐사학회 2000 International Symposium on Remote Sensing Vol.16 No.1

The series of forest Fires in Kangwon Province in April, 2000, were one of the mast serious ones in the Kang-won Province in recent years. The fire damaged areas are extensive and this paper investigates the utility of the satellite image data, particularly the RADARSAT SAR data. One of the main objectives of this study included evaluation of potential usefulness of the C-band RADARSAT data in the detection of forest fires in mountainous areas. Among several fire damaged sites, the area near Samchuk (city) was selected as the main study area and mufti-temporal RADARSAT(raw) data were acquired and the processed results were comparatively investigated with the IRS-1c data acquired shortly after the fire. To identify the burnt area from the undamaged background in the optical imagery, supervised classification and NDVI processing were carried out and tested with the IRS-1C data. For this experiment, several sets of raw RADARSAT standard and Fine mode (S4, F3, ascending orbit) data were processed and the final image was formed. In addition to the final image, sigma nought (σ°) was catnputed and compared for the burnt area against the undamaged areas. Because of the steep slopes in the study area and subsequent deviation from the flat surface scattering models, the fire scars in the sigma nought (σ°) image were not apparent. However, fire scars are slightly detected in the difference and ratio images obtained from the signal intensity data acquired at different dates (bath before and after fire). Texture analysis of the image data including the burnt areas were carried out using the Multiplicative Markov Random-Field (MMRF) algorithm. The detection of the fire damaged area from both standard mode and fine mode RADARSAT was not as straightforward as in optical data. However, Previous studies with ERS-1 S_AR and RADARSAT data in Indonesia and in the North American Plains indicate that C-band SAR data provide us with an effective tool for studying the forest fire damages. However, the application of C-band SAR data to the analysis of the forest fire areas requires careful processing of the data with realistic scattering models.

Assessment of In Vitro Assay System for Thyroid HormoneDisruptors Using Rat Pituitary GH3 Cells

Hee Jin Kim1,Hae Young Park1,Jeonga Kim1,Il Hyun Kang2,Tae Sung Kim2,Soon Young Han2,Tae Seok Kang2,Kui Lea Park2,Hyung Sik Kim1 한국독성학회 2006 Toxicological Research Vol.22 No.4

The development of in vitro assays has been recommended to screening and test-ing the potential endocrine disruptors (EDs). These assay systems focus only on identifying thethe thyroid hormone (TH) disruptors. The aim of this study was to evaluate a test system to detectTH disruptors using rat pituitary tumor GH3 cells. The test system is based on the TH-dependentincrease in growth rate. As expected, L-3,5,3-triiodothyronine (T3) markedly induced a morphologicalchange in GH 3 cells from flattened fibroblastic types to rounded or spindle-shaped types. T3 stimu-lated GH3 cell growth in a dose-dependent manner with the maximum growth-stimulating effect9 M. In addition, T3 increased the release of growth hor-mone and prolactin into the medium of the GH3 cells culture. Using this assay system, the TH-dis-rupting activities of bisphenol A (BPA) and its related compounds were examined. BPA,dimethylbisphenol A (DMBPA), and TCI-EP significantly enhanced the growth of GH3 cells in therange of 1 × 10-5M to 1 × 10-6M concentrations. In conclusion, this in vitro assay system might bestandardization before it can be used as a broad-based screening tool.

메조포러스 물질에 담지된 팔라듐 촉매에서 메탄의 연소반응 : 티타니아 담지 효과 Effect of Titania Loading

강태구,김태진,김종호,서 곤 전남대학교 촉매연구소 1998 촉매학술발표회 Vol.- No.15

연소과정에 촉매를 사용하여 연소온도를 낮추고 완전산화시키면, 에너지를 효율적으로 이용할 수 있을 뿐 아니라 질소산화물 생성과 일산화탄소 등 불완전연소 물질을 줄일 수 있어 환경오염 방지 측면에서 매우 바람직하다. 화염이 없는 조건에서 안정적으로 열을 발생시키기 위한 중•저온 연소촉매로 활성이 높은 귀금속 성분을 지지체에 담지시켜 사용한다. 통과 유량이 크고 열 발생량이 많기 때문에, 연소촉매의 지지체는 물질과 열전달이 용이하도록 세공이 크고열적 안정성이 우수하여야 한다. 중간 크기의 세공이 발달되어 있는 메조포러스 물질은 물질전달과 열전달이 용이하다는 점에서 연소반응의 지지체로서 가능성이 높다.

환자의 마취전후 병력 또는 불편요서의 현황(2)

강태훈,양홍석,김진윤,최병권,조형상 중앙대부설한국의과학연구소 1990 한국의과학 Vol.22 No.4

DMPT(dimethy1-β-propiothetin)첨가 급이가 참돔 근육의 화학성분에 미치는 영향

강동수,배태진,최옥수 여수대학교 산업기술지역개발연구소 2000 産業基術硏究所 論文集 Vol.9 No.-

A eight weeks feeding experiment was conducted to investigate the effects of different dietary dimethyl-β-propiothetin(DMPT) levels on growth and body composition in red sea bream(Pagrus major). Body weight gain, feel efficiency and feed intake were significantly increased with dietary DMPT level. After eight weeks of feeding trial, moisture content decreased with supplemented DMPT level, while crude protein and lipid contents increased with dietary DMPT level. Amino acid composition of muscle in fish fed the diets supplemented DMPT was not different to that of control group. Fatty acid contents of muscle in fish increased with dietary DMPT level.

정하중 조건에서 치과용 세라믹의 균열전파 양상 평가

강동진,박주미,배태성 대한치과기재학회 1999 대한치과재료학회지 Vol.26 No.1

Fatigue failure of ceramic material occurs with crack propagation while tensile stresses are applied in aqueous environments. dental ceramic materials : A feldspathic porcelain of VMK68, a castable glass ceramic of IPS-Empress and an alumina-glass composite of In-Ceram. Specimens were prepared as 12×3×1 mm in dimensions, and a Vickers-produced indentation crack was made at the center of the tensile surface with loads of 9.8 N and 49.0 N. Test specimens were stored in distilled water at 37℃, which were broken under a statically loaded state and a crosshead speed of 0.5mm/min by 3-point bend test. The radical cracks produced with Vickers indentation and fracture surfaces were examined by scanning electron microscope. The results obtained were summarized as follows; 1. Half-penny type crack, bordered by small, radially shaped ridges, was examined at the fracture origin containing the Vickers-produced indentation crack. 2. Fracture surfaces of the VMK68 and IPS-Empress showed the tendency of cleavage hackle and the toughening mechanism of crack bridging by the dispersed leucite crystals. 3. Fracture surface of the In-Ceram indicated the frictional interlocking of jogs having the tendency of toughening by crack deflection, rather than by crack bridging.

大學에서 測量敎育 : 大學에서 敎科課程開發을 中心으로

强泰煥,全芳珍 청주대학교 대학원 1995 우암논총 Vol.12 No.-

Maintaining the content of a surveying curriculum so that it is current requires regular reassment of the expected future tasks of surveyors. The surveyor must be able to respond to rapid developments in computing, satellite positioning, computer graphics, image management, and spatial information system. This paper presents a view of the expected future role of a professional surveyor and its impact on the development of the curriculum of a surveying course. Discriptions are goven of the goals and principles used for the development of the revised Bachelor of Surveying Course at the University of New South Wales. The course was developed on the basis of a flexible structure comprising strands in basic science, computing surveying, high surveying, land information management and professional practice. The expectation is that future modifications can be achieved with in this strands without a major restructuring.

정상 성인에 경구 투여한 Cefixime 두 정제의 생물학적 동등성 비교

강진양,서성훈,이경태,문창훈,강진한,이동건,최정현,신완식 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.4

목적 : 식품의약안전청 고시 제 1998-86호(1998. 8.26) "생물학적 동등성 시험 기준"에 의하여 섹심 캅셀(시험약, 한국유나이트제약)과 슈프락스 캅셀(대조약, 동아제약)의 생물학적 동등성을 비교 검토하였다. 방법 : 2×2 라틴 방격법에 따라 건강한 성인 남성 지원자 20명에게 cefixime 100㎎씩 경구투여하였다. 약제투여 후 12시간까지 일정간격으로 채혈하였고 각 피험자들의 혈중약물농도 데이터로부터 구한 Area under the concentration (AUC), C_(max), T_(max) 등의 생체이용률 파라미터에 대해 통계학적으로 고찰하여 두 제제간의 생물학적 동등성을 평가하였다. 결과 : AUC, C_(max), T_(max)에 대한 평균값의 차가 각각 1.26%, 3.73%, 6.21%로서 모두 대조약의 20% 이내에 들어 생물학적 동등성 판정기준의 전제조건을 만족하였다. 분산분석 결과 AUC, C_(max), T_(max)의 각 비교 항목에 있어서 모두 유의수준 α=0.05의 군/순서효과 검정에서 F비가 F 분석표의 한계값보다 작아 교차시험이 제대로 이루어졌음을 확인할 수 있었으며, AUC, C_(max), T_(max) 각 비교항목에 있어서 유의수준 α=0.05에서 대조약에 대한 최소검출차(Δ)가 각각 17.74%, 17.05%, 15.67%로 모두 20% 이내이었으며, 검출력(1-β)도 모두 0.8 이상으로 나타나 생물학적 동등성 판정기준을 만족시켰다. 또 AUC, C_(max), T_(max) 각 비교항목에 있어서 대조약에 대한 생체이용률 차이의 신뢰한계(δ)가 ±20% 이내이어야 한다는 생물학적 동등성 판정기준을 모두 만족시켰다. 결론 : 이상의 실험결과로 시험약은 대조약에 대하여 생물학적 동등성 평가항목인 AUC, C_(max), T_(max)에서 모두 판정기준을 만족시켜 시험약은 대조약과 생물학적으로 동등하다고 사료된다. Background : The study was designed to compare the bioeqivalence between the test (CEXIME®. United Korea. Co., Ltd) and control (SUPRAX®. Dong-a Pharm. Co.. Ltd) capsules of cefixime. Methods : Twenty. healthy, male volunteers completed the study Each subject ingested single dose (100 ㎍) of the control and test drugs in 2?2 crossover design with a week drug-free interval between the doses. Blood samples were collected serially up to 12 hours and plasma concentrations of cefixime were measured by high-performance liquid chromatography with UV detection. A non-compartmental approach was used for analysis of the concentration-time data. Results : The area under the curve (AUC), the maximum concentration of drug (C_(max)). and time to reach C_(max)(T_(max)) did not show any significant difference between the two preparations by ANOVA. The mean differences of AUC, C_(max), and T_(max) were within 20% of the control drug, those were 1.26%. 3.73%. and 6.21%. respectively. The confidence limits of three parameters were satisfied the bioeqivalence criteria. Conclusion : These results suggest that the test drug was bioequivalent with the control drug.

RAPD Pattern of Ginseng(Panax ginseng C.A. Meyer) Lines Containing High Level of Ginsenoside

Kang,Tae-Jin,Kim,Se-Young,Rho,Yeong-Deok,Deok-Chun 한국자원식물학회 2003 Plant Resources Vol.6 No.3

The important component for medical effect in ginseng is ginsenoside. Korea Ginseng & Tobacco Research Institute contains approximately 200 lines produced by inbred selection. It is assumed that ginseng lines containing high level of ginsenoside should be included in those lines. Besides, new breeding methods such as cell line selection in vitro and hairy root were recently developed. Therefore, this study was carried out to detect genes related to ginsenoside, and to use it for selection marker to select and distribute lines containing high level of ginsenoside. DNA was extracted from both ginseng roots and hairy roots, and the difference between the line containing high ginsenoside(KG101) and normal ginsenoside(KG103) were analysed. As a result, 28 out of 36 primers showed bands, and many primers showed band difference between ginseng lines. It is considered that the bands should be analysed using DNA sequence comparison to check if those are related to ginsenoside. In case of hairy roots of ginseng, almost no differences were found between two lines.

Days to Germination and Effect of Growth Regulator on Rhizome Growth in Cymbidium goeringii Hybrid

Kang,Tae-Jin,Yang,Deok-Chun 한국자원식물학회 2003 Plant Resources Vol.6 No.2

Germination efficiency, such as days to germination and conditions for the hybrid seeds, was tested after hybrid seeds were sown on the medium. Seeds were germinated from 67 to 126 days after seeding in all cross combinations, and germination condition was different among hybrid combinations. There was big difference on days to germination based on the different media, that is, days to germination in the hyponex medium was shorter than that in the Knudson C medium. Mutants such as MMS and NaN₃ were used to cause mutation. Germination occurred with 0.1 % NaN₃ and MMS. However, even though germination occurred in other treatments (0.01 % and 0.2% of NaN₃ and MMS), brownish phenomenon was intense, or did not proceed and got worse after 4-5 months of seeding. In addition, it was performed to choose appropriate medium for the growth of Cymbidium rhizome whose media adaptability is more different than other orchids. Different concentration of NAA and Kinetin was used. As a result, C. goeringii hybrid showed difference for the concentration of NAA and Kinetin combination.