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.

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.

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.

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.

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.

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.

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.

치아 석회화 단계와 골 성숙도 단계간의 상관관계에 대한 연구

강동균,김태완,김영진,남순현,김현정 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.2

본 연구는 성장 중인 부정교합 환자의 진단이나 치료계획의 수립,치료방법 및 시기,예후 등을 결정하는데 중요한 판단 지침이 되는 치아 석회화 단계와 경추 및 수완부골 성숙도간의 연관성을 규명하여 개인의 보다 정확하고 효율적인 사춘기 성장 정도를 평가하기 위해 시행하였다. 전신 질환이 없고 교정 치료 경험이 없는 7-16세의 여아 154명,남아 179 명,총 333명의 파노라마 방사선사진,측모 두부규격 방사선사진,수완부 방사선사진을 분석하여 평가하였다. 연구 결과,파노라마 방사선사진의 치아 석회화 단계를 통하여 사춘기 성장 정도를 평가하는 것은 부정교합 환자의 진단 및 치료계획을 수립하는데 임상적으로 유용한 정보를 제공할 것으로 판단되었다. The purpose of this study was to investigate the relationship between the stages of calcification of various teeth and skeletal maturity stages among Korean individuals. The study subjects consisted 154 female and 179 male ranging from 7 years to 16 years of age. A total of 333 hand-wrist, cephalo-lateral and panoramic radiographs were obtained and analyzed. The tooth development of the mandibular canines, first, second premolars, and second molars were assessed according to the Dermijian' s system. Skeletal maturity stages were determined from hand-wrist radiographs by using the SMI system and cephalo-lateral radiographs by using the CVMS, respectively. The results were as follows 1. The mean ages of each stage of skeletal maturity were consistently younger in female subjects. 2. There was a high correlation between skeletal maturity of hand-wrist and cervical vertebrae in the both sexes. 3. There was a high correlation between skeletal maturity and dental calcification stage of mandibular canines, first premolar, second premolars, and second molar. 4. The mandibular second molar was tooth showing the highest correlation. 5. Percent distributions of the relationship between calcification stages of individual teeth and stages of skeletal maturity were obtained in both sexes. In summary, this suggests that tooth calcification stages from panoramic radiographs might be clinically useful as a maturity indicator of the pubertal growth period.

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.