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.

A Study on the Energy Consumption of Energy Poverty Households

Kang-Guk Lee,Gyu-Yeob Jeon,Won-hwa Hong 한국생활환경학회 2017 한국생활환경학회지 Vol.24 No.4

This study was conducted to identify requirements and improvements for policies related to energy welfare by investigating and analyzing household characteristics, residential building information, elements of energy use, and energy welfare status among the energy poverty. In this study, the energy consumption of the energy poverty and support policies are investigated, and characteristics of each are analyzed. The average number of household members in the energy poverty group was 2.3, and the average monthly household income of the households was 93.3 million won. The average expenditure on energy use per year was 947,957 won, which was the highest in January, February, and December. The most desirable energy welfare policy was the reduction or reduction of electricity cost.

Development of a Mass Spectrometric Method for Pharmacokinetic Study of Trastuzumab

Hong, Nam Young,Choi, Jin Nyoung,Kang, Jeong Won,Choi, Do Young,Park, Gyu-Tae,Kim, Kwang Pyo Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.6

Efficient Recovery Scheme for H. 263 Macroblocks Damaged by Mobile Channels

Won Gi Hong,Kang Sun Choi,Ju Hyun Kim,Sung Jea Ko 대한전자공학회 1998 ITC-CSCC :International Technical Conference on Ci Vol.- No.-

Longitudinal melanonychia: a distinguishing feature of bowen`s disease of the nail unit associated with human papillomavirus type 56

( Hong Jin Joo ),( Young Jun Woo ),( Ki Min Sohn ),( Won Joon Choi ),( Jung Eun Kim ),( Hoon Kang ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1

Bowen’s disease (BD) involving the periungual region may appear wart-like, but may also present as periungualerythema associated with crusting, ulceration or fissuring, onycholysis, or nail dystrophy. Rare cases presenting as lesions on the nail unit with longitudinal melanonychia have also been described. Human papillomavirus (HPV) infection, especially with HPV type 16, is well recognized as the predominant infection associated with periungual BD. Recently, the detection of HPV type 56 in BD of the nail matrix has also been reported in several cases manifested as longitudinal melanonychia. An 85-year-old woman presented with a one-year history of longitudinal melanonychia on the lateral aspect of her right third fingernail. Histopathological findings revealed a marked acanthotic epidermis with full-thickness atypia. The specimen was positive for HPV type 56. Here, we report a case of BD presenting as longitudinal melanonychia that was associated with HPV type 56.

A case of foreign body granuloma after blepharoplasty

( Hong Jin Joo ),( Young Jun Woo ),( Yoon Seob Kim ),( Won Joon Choi ),( Hoon Kang ),( Jung Eun Kim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1

Foreign body granuloma is a reaction to exogenous (talc, suture material, parasites, oil droplets, wood, metals, silica, silicon) or endogenous (hail shafts, keratin, cholesterol, urates/goutous tophi) materials, which are immunologically inert but too large to be ingested by macrophages. These localized lesions may occur at any age and clinically present as papules, plaques or nodules. Several cases of foreign body granuloma to nonabsorbable suture material have been reported. A 57-year-old woman presented withasymptomatic, solitary, 3mm-sized, yellowish papule on the right inner canthus for 5 months. She had a history of blepharoplasty more than 10 years ago. Punch removal was done. In histopathologic examination, dark bluish foreign materials were detected. Around the foreign materials, multinucleated giant cells, with haphazardly arranged nuclei were observed. The case was diagnosed asforeign body granuloma. We herein report a case of foreign body granuloma caused by nonabsorbable suture materials after blepharoplasty.

Management of Regional Lymph Nodes in Localized Vulvar Carcinoma

Won Il Jang(장원일),Hong-Gyun Wu(우홍균),Charn Il Park(박찬일),Sung Whan Ha(하성환),Hyo Pyo Lee(이효표),Soon Beom Kang(강순범),Yong Sang Song(송용상) 대한방사선종양학회 2008 Radiation Oncology Journal Vol.26 No.1

목 적: 외음부 암환자에서 국소영역 치료실패에 대한 수술 후 방사선치료의 영향을 평가하고 임상적으로 림프절이 전 이가 없는 환자들에서 서혜부 림프절에 대한 치료방침을 결정해 보고자 하였다. 대상 및 방법: 1979년 10월부터 2004년 6월까지 서울대학교병원에서 일차성 외음부 암으로 치료를 받은 환자 66명에 대해 후향적 분석을 시행하였다. 이들 중에서 원격전이가 있는 2명, 고식적 목적으로 치료를 받은 6명, 이전에 골반부위 방사선 치료의 병력이 있는 3명, 추적관찰이 탈락된 4명, 의무기록이 불충분한 1명을 포함하여 16명의 환자들은 이번 분석에서 제외되었다. 50 명 중에 수술만 받은 환자가 35명, 수술과 방사선 치료를 받은 환자가 10명, 방사선 치료만을 받은 환자가 5명이었다. 결 과: 5년 전체 생존율과 무병 생존율은 각각 91%, 78%였다. 12명(26%)에서 치료 실패를 보였으며, 국소 실패가 8명, 영역림프절 전이가 3명, 원격 전이가 1명이었다. 수술과 방사선치료를 같이 받은 환자들이 수술만을 받은 환자들보다 위험요인을 더 많이 가지고 있었지만, 무병 생존율은 두 집단에서 통계적으로 유의한 차이를 보이지 않았다(5년무병 생존율 78% vs. 83%, p=0.66). 잠재성 림프절 전이의 빈도는 10%였다. 임상적으로 림프절 전이가 없었던 31명의 환자들 중에서 10명은 서혜부 림프절 절제술을 받지 않았지만, 이들 중에서 영역림프절 전이를 경험한 사람은 아무도 없었다. 결 론: 치료실패의 위험요인을 가진 외음부 암자들에게 수술 후 방사선 치료는 잠재적인 이점을 가지고 있다. 임상적으로 림프절 전이가 없는 위험도가 낮은 환자들에게는 서혜부 림프절 절제술을 하지 않는 것이나 서혜부 림프절에 대해 예방적 방사선치료를 하는 것에 대해서 고려해 볼 수 있겠다. Purpose: To evaluate the impact of postoperative radiotherapy on loco-regional failure in patients with vulvar carcinoma and to determine the treatment strategy for inguinal lymph nodes. Materials and Methods: Sixty-six patients who received treatment for primary vulvar carcinoma at Seoul National University Hospital, from October 1979 through June 2004, were retrospectively analyzed. Sixteen patients were excluded from the analysis due to the following reasons: distant metastases in two patients; palliative intent for six patients; previous radiotherapy given to the pelvis in three patients; follow-up loss after surgery for four patient; insufficient medical records for one patient. Of 50 eligible patients, 35 were treated with surgery alone (S), ten were treated with surgery followed by radiotherapy (S+RT), and five were treated with radiotherapy alone. Results: The 5-year overall survival (OS) and disease-free survival (DFS) rates of all patients were 91% and 78%, respectively. Twelve patients (26%) experienced treatment failures and the sites of initial failure were as follows: a primary site in eight patients; regional lymph nodes in three patients; the lung in one patient. Although risk factors for failure were more common in the S+RT group than the S group of patients (p <0.05), the DFS rates were similar for the two groups (5-year DFS rates, 78% vs. 83%, p=0.66). The incidences of occult lymph node metastases was 10%. Ten of 31 patients with clinically negative lymph nodes did not received inguinal lymph node dissection, but no patient experienced regional failure. Conclusion: Postoperative radiotherapy may have a potential benefit for patients with risk factors for failure. The omission of inguinal dissection or elective radiotherapy to the inguinal lymph nodes may be considered in low-risk patients with clinically negative lymph nodes.

Session J : Plant Gene Structure and Expression : PRODUCTION OF TRANSGENIC TOBACCO PLANT FOR IMPROVING NUTRITIONAL QUALITY OF STORAGE PROTEIN

Hong Gu Kang,Jee Won Park,Min Gyu Lee,Yun Jung Kang,Chung Ho Kim,Yang Do Choi 생화학분자생물학회(구 한국생화학분자생물학회) 1993 추계학술대회집 Vol.- No.-

A New Black Soybean Cultivar, “Cheongja 3” with Green Cotyledon,Medium-late Maturity and High Anthocyanin

Hong-Tae Yun,Won-Young Han,In-Youl Baek,Doo-Chull Shin,Jong-Min Ko,Nam-Suk Kang,Chan-Sik Jung,Sea-Kwan Oh,Myoung-Gun Choung,Sung-Taeg Kang,Duck-Yong Suh,Ho-Yeong Kim,Dong-Kwan Kim,Chang-Ki Son 한국육종학회 2005 한국육종학회지 Vol.37 No.5

A new black seed coated soybean cultivar with green cotyledon, Cheongja 3 was developed at the National Institute ofCrop Science (NICS), and Yeongnam Agricultural Research Institute (YARI) in 2004. Cheongja 3 was selected from a cross)were carried out from 2000 to 2004. It has a determinate growth habit, purple flower, tawny pubescence, dark brown pod color,black seed coat, green cotyledon, ellipse seed shape, oval leaflet shape and large seed size (32.1 grams per 100 seeds), and it was7 days later in maturity than the check variety Cheongja. In seed quality such a sucrose, and a total sugar contents, isoflavone, andbeen identified to have resistance to necrotic symptom (SMV-N) of soybean mosaic virus which is the troublesome soybean dis-ease. The average yield of Cheongja 3 was 2.40 ton per hectare in the regional yield trials (RYT) carried out for three years from2002 to 2004 which was 12 percent higher than the check variety Cheongja.

Korean Prostate Cancer Patients Have Worse Disease Characteristics than their American Counterparts

Kang, Dong Il,Chung, Jae Il,Ha, Hong Koo,Min, Kweonsik,Yoon, Jangho,Kim, Wansuk,Seo, Won Ik,Kang, Pil Moon,Jung, Soo Jin,Kim, Isaac Yi Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.11

Background: Although the PSA test has been used in Korea for over 20 years, the incidence of prostate cancer has risen, and the associated mortality has increased about 13-fold over the 20-year period. Also, several investigators have suggested that Asians in America are more likely to present with more advanced prostate cancer than Caucasians. We compared the characteristics of native Koreans and Americans (Caucasians and African-Americans) undergoing radical prostatectomies in Korea and the US. Materials and Methods: Study subjects comprised patients at Korean and US hospitals from 2004 to 2012 who had undergone radical prostatectomies. We compared the characteristics of the subjects, including age, preoperative prostate-specific antigen (PSA) levels, body mass index (BMI), Gleason score, and pathological T stage. Results: In total, 1,159 males (502 Koreans, 657 Americans) were included. The Korean and American patients had mean ages of $67.1{\pm}6.6$ and $59.2{\pm}6.7$ years, respectively. The mean preoperative PSAs were $15.4{\pm}17.9$ and $6.2{\pm}4.6ng/mL$ (p=0.0001) and the mean BMIs were $23.6{\pm}2.6$ and $28.7{\pm}4.4kg/m^2$ (p=0.0001), respectively. Pathological localized prostate cancer represented 71.7% of cases for Koreans and 77.6% for Americans (p=0.07). According to age, Koreans had higher T stages than Americans in their 50s (p=0.021) and higher Gleason scores than Americans in all age groups. According to PSA, Koreans had higher Gleason scores than Americans for PSA >10 ng/mL (p<0.05). According to prostate size and Gleason scores, Koreans had higher PSA values than Americans (p<0.01). Conclusions: These results show that Korean patients have elevated risk of malignant prostate cancers, as indicated by the significantly higher Gleason scores and PSAs, suggesting a need for novel prostate cancer treatment strategies in Korea.