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.

경남 고등부 선수들의 심리적 요인 비교

강진철,김태진 창원대학교 체육과학연구소 1998 경남 체육연구 Vol.3 No.1

본 연구는 제78회 전국체육대회에 참가한 경남 고등부 대표선수들의 심리적 요인(경쟁상태 및 특성불안, 정신력, 주의유형)을 비교하기 위해 실시하였다. 피험자는 제78회 전국체육대회에서 농구, 하키, 수영, 조정 종목의 경남 대표선수로 참가하게 될 남녀 고등부 선수(남:40, 여:33) 총 73명 이었다. 이에 따른 검사도구로 경쟁상태불안의 측정은 Martens 등이 개발한 경쟁상태 불안 검사지(CASI-2), 정신력은 Loehr의 정신력 진단 검사지, 주의유형은 주의집중 검사지(TAIS 간편형)를 이용하였다. 측정된 자료는 심리적 요인에 따른 집단과 종목간의 평균과 표준편차를 산출하고 집단과 종목간의 유의차 검증을 위해 이원변량분석을 실시하여 다음과 같은 결론을 얻었다. 1. 집단별 경쟁상태 및 특성불안 수준은 남자부 선수들이 여자부 선수들보다 모든 요인에서 더 높게 나타났다. 경쟁상태 및 특성불안 수준의 평균차 검증을 위하여 이원변량분석을 실시한 결과 특성불안 요인에서만 통계적으로 유의한 차이가 있는 것으로 나타났다. 2. 집단별 정신력을 비교한 결과 각성조절 요인을 제외한 모든 요인에서 남자부가 여자부보다 더 높은것으로 나타났다. 하지만 남녀 모두 자신감과 각성조절, 주의조절, 시각 및 이미지 요인에서 낮은 점수를 보이는 것으로 나타났다. 3. 집단별 주의형태는 남녀 선수가 모두 NAR과 RED요인을 제외한 모든 요인에서 비효과적인 주의형태를 보이는 것으로 나타났다.

Zn를 첨가한 고온초전도체 Y Pr Ba₂Cu₃O 의 Raman 분석

강재필,김성재,박현진,노태호,송승기,박영민,전인 明知大學校 自然科學硏究所 1997 자연과학논문집 Vol.15 No.-

고온초전도제 Y Pr Ba₂Cu₃O 에 Zn를 첨가(x=0.00, 0.05, 0.10, 0.15, 0.20)하여 전이온도 측정, X-ray회절 실험과 Raman 실험을 하였다. Raman 측정결과 다섯 개의 시료가 일반적인 YBCO 초천도체의 Raman 스펙트럼에서 존재하는 다섯 개의 대칭활성모드(115cm¹,150cm¹.340cm¹,440cm¹,504cm¹)가 관측되었다. 이것은 Cu 와 관련된 대칭활성모드의 주파수가 모두 저주파 변위를 나타내어 Zn가 Cu(1)과 Cu(2)에 치환되었음을 의미한다. 저주파 변위 정도는 Zn에 거의 무관했으나, Raman 스펙트럼의 각 피이크의 선폭은 치환된 Zn에 의해 증가했다. 이 결과는 Zn가 Cu자리에 어느 한계 이상은 치환되지 못하고 시료 내에서 불순물상을 형성함을 나타내는 것이다. We measured transition temperature, X-ray diffraction pattern and Raman spectra of Zn added(x=0.00, 0.05, 0.10, 0.15, 0.20) high-T superconductor Y Pr Ba₂Cu₃O All samples have been observed five symmetric activity modes(115cm,150cm¹.340cm¹,440cm¹,504cm¹)which exist in Raman spectrum of general YBCO superconductor. This means Zn is substituted for Cu(1) and Cu(2) due to the fact that symmetric activity mode frequency related with Cu shows low-frequency shift. The degree of low-frequency shift was nearly independent on Zn but line width of Raman spectra peaks were increased by the substituted Zn. This results shows that Zn does not be substituted for Cu-site more than limit value and formes impurity phase in the sample.

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.

폴리스티렌 수지 재활용 관련 기술의 특허출원 동향분석

강태원,정진기 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

In this paper the world wide patents on the recycle of used polystyrene was inspected. The trends and directions of on going and future technologies on this matter was analyzed. The range of search was limited in the open patents and in DB of U.S.A.(USPTO, DLPHION), Japan(PAJ), Europe(EPO), and Korea(KIPRIS). For the search condition the keyword, polystyrene or PS, and IPC classification were used and the total of 534 cases was found. The trends of the patents were analyzed by the years, from 1974 to 2002, the countries, companies, and technologies.

유자 과피를 이용한 oleoresin 제조 및 항산화 활성

강동수,배태진 麗水大學校 産業基術硏究所 1999 産業基術硏究所 論文集 Vol.8 No.-

As a way of mass process for citron peel, the extracting conditions of oleoresin concentrated the original flavor and taste, such as kind of solvents, particle sizes of a sample, sample to solvent ratios, extracting temperatures and times, were studied. Among eight solvents used for oleoresin extraction from citron peel, the optimal solvent was ethyl alcohol. The most appropriate particle size of citron peel powder, extracting temperature and mixing ratio of citron peel to ethyl alcohol were 20 mesh, 40℃ and 1 to 8 (w/v), respectively. The basis of yield in oleoresin extraction, optimum extracting time ws about 2 hours. The yield of oleoresin under the above-mentioned conditions was 28.7%. When the induced heating-oxidize with soy bean oil and sesame oil added 0.8% of oleoresin citron peel, induction-time extension effect appeared antioxidant activity that was applicable for 83.6~86.0% about effection of addition of 0.02% BHA.

자연산 및 양식산 농어의 영양성분 비교

강동수,배태진,하봉석 여수대학교 1998 論文集 Vol.12 No.2

The differences in the contents of nutritive components of meat were examined between wild and cultured sea bass. Total amino acid contents of the wild sea bass were higher than that of the cultured one. The main amino acids in the both sea bass were glutamic acid, aspartic acid, leucine and lysine. The wild sea bass contained higher amounts of glycine than in the cultured sea bass. Total free amino acid contents of the cultured sea bass were higher than that of the wild one. In composition of free amino acid, taurine was abundant, and glutamic acid, glycine, alanine and histidine were the major free amino acids. The contents of glycine, alanine and histidine in the wild fish were higher than those in the cultured one, while the content of taurine was lower. In the contents of nucleotides and their related compounds, IMP was dominant, and followed ADP, AMP, in order. The contents of nucleotides and their related compounds in the cultured sea bass were markedly lower than that of the wild sea bass. In fatty acid composition, C16:0, C18:1, C22:6, C16:1 and C20:5 fatty acids were abundant. The wild sea bass showed higher levels in C16:1 and C18:1 fatty acids than the cultured sea bass, while the cultured sea bass contained much amont of C22:6 fatty acid.