강우시 채수빈도가 논 오염부하량 산정에 미치는 영향

한국헌,김진호,이종식,이정택,조재영,윤광식 한국환경농학회 2005 한국환경농학회지 Vol.24 No.1

한정된 수질자료를 이용 오염부하 산정시 집중적으로 많은 샘플을 채취한 경우에 비해 어느 정도 차이를 갖는지를 규명하는 것은 모니터링에 따른 오염부하량 산정결과의 신뢰 범위 파악뿐만 아니라 경제적인 수질 샘플 채수빈도 수립에 곡 필요한 것으로 사료된다. 그 결과를 요약하면 다음과 같다. 논에서의 강우-유출시 채수 빈도가 오염부하 산정에 미치는 영향을 파악하기 위해 9개의 강우사상에 대해 2시간 간격으로 연속 수질샘플을 실시하여 분석한 결과 전체적으로 강우-유출과정 중 T-N, T-P, SS 농도는 시간별로 증·감변동을 하였으나 유량과의 상관성은 나타나지 않았다. 수질샘플 횟수에 의한 영향은 강우-유출과정 중 5회 정도 샘플을 실시하면 많은 수의 샘플을 채수한 경우에 비해 T-N ±15.2%, T-P는 -20.0~26.2%, SS는 -28.6~35.7% 범위안에서 오염부하를 추정할 수 있는 것으로 나타났으며, 차이범위가 ±10% 내에 들어가기 위한 샘플수는 일주기 조사시 T-N, T-P의 경우는 6회, SS의 경우는 단기유출시는 4회 정도 실시하면 되고, 장기 유출시에는 11회 정도 실시하면 되는 것으로 조사되었다. 유량-유하부하량 관계식으로 ±10%내의 차이를 보일 샘플횟수는 T-N의 경우는 6회 이상, T-P와 SS는 9회 이상 정도 실시하면 되는 것으로 조사되었다. In order to examine effects of sampling frequency during rainfall-runoff process from paddy field on the estimation of pollution load, EMCs of several water sampling frequencies were examined. Water quality samples were conducted by every two hours interval for each event. It was found that difference of load estimation between five times sampling and two hours consecutive sampling during rainfall-runoff showed 15.2~-15.2% for T-N, 20.0~-26.2% for T-P, 28.6~-35.7% for the SS, respectively. In the same way, the effects of number of sampling data on estimation of pollution load using runoff-mass load(L-Q) method were investigated. L-Q equation made of five times sampling data provided 10% differences in estimation of mass loads of T-N, T-P, and SS when compared to those by L-Q equation using entire two hours consecutive sampling data during runoff process.

성장기 아동에서의 경추의 화골형태와 두개안면부 성장변화에 관한 연구

한국재,이상호 大韓小兒齒科學會 1993 大韓小兒齒科學會誌 Vol.20 No.2

The purpose of this study was to investigate the growth patterns of craniofacial areas in association with ossification events of cervical in growing children. The subjects used in this study were 476 children, ranging from 8 to 16 years of age, with good health, none of them recieved orthodontic treatment. Cephalometric radiographs were used to evaluate the growth patterns of the craniofacial area and the cervical vertebrae, and their relationships. Data was analyzed by SAS statistical program on computer. The results were as follows. 1. The chronologic age at peak height velocity(PHV) was 13-14 years in male and 12-13 years in female and it’s timing was synchronous with Cervical Vertebral Stage(CVS) 3-4. 2. The increased measurements in accordance with skeletal maturation of vertebrae were anterior cranial base length, posterior cranial base length, ramus height, mandibular body length, anterior facial height, posterior facial height, facial length, facial depth, SNA, SNB, and facial plane angle. In contrast, The decreased measurements were gonial angle, and mandibular plane(SN)Go Gn) 3. There was a close correlation between the linear growth of the craniofacial area and skeletal maturity of the cervical vertebrae but the angular measurements and the denture pattern showed a low correlation with the skeletal maturation of the cervical vertebrae. 4. The growth rate of the cranial area was even but that of the mandibular area was in peak synchronous with pubertal growth spurt of cervical vertebrae. 5. The timing of each skeletal stage of the cervical vertebrae forward in girls than of in boys but the linear measurements of the craniofacial area were larger in boys than those of in girls at each stage of skeletal maturity of the cervical vertebrae.

지역별 암환자 비교 및 고찰 : 일부지역을 중심으로 Seou and Kwangju

한재진,김승국 광주보건대학 2000 論文集 Vol.25 No.-

Investigating and comparing data of cancer cases of Chonnam University Hospital, a model hospital treating cancer patients in Kwangju District, and Korea Cancer Center Hospital, a representing hospital treating cancer patients in Sedul District, as shown in their annual reports from January 1990 to December 1997, results are obtained as the following: 1. The cumulative total of 52,546 cancer patients for 8 years in Seoul District, consists of 6,294 cases (11.98%) in 1990, 6,881 cases (13.10%) in 1991, 6,672 cases (12.70%) in 1992, 6,705 cases (12.76%) in 1993, 6,461 cases (12.30%) in 1994, 6,350 cases (12.08%) in 1995, 6,865 cases (13.06%) in 1996, and 6,318 cases (12.02%) in 1997. There was no increase or decrease notable in number of cancer patients for 8 years. 2. The cumulative total of 9,091 cancer patients for 8 years in Kwangju District, consists of 1,144 cases (12.58%) in 1990, 792 cases (8.71%) in 991, 692 cases(7.61%) in 1992, 892 cases (9.81%) in 1993, 1,306 cases (14.37%) in 1994, 1,233 cases (13.56%) in 1995, 1,608 cases (17.69%) in 1996, and 1,424 cases (15.66%) in 1997, Number of cancer patients rapidly increased in 1994. Change in number of cancer cases is scarcely noticed in Seoul Distirct, but somewhat extensive of change is noticed for these 8 years in Kwangju Distirct; average 10.08% increase every year, from 7.61% at the lowest to 17.69% at the highest. 3. The total of 52,546 patients in Seoul District, was classified by physical regions attacked, 12,238 cases (23.48%) at stomach, 8,375 (15.94%) at cervix & uteri,n6,294 (11.98%) at lung, and 5,608 (10.67%) at liver in order. Male patients were attacked at stomach, liver, lung, and colon and rectum in order, and female patients were done at cervix & uteri, stomach, breast, and liver in order. 4. The total 9,091 cancer patients in Kwangju District, was classified by physical regions attacked, 1,054 cases (16.54%) at stomach, 1,085 (11.93%) at liver, 972 (10.96%) at lung, 913 (5.75%) at cervix & uteri, and 456 (5.02%) at breast in order. Male patients were attacked at stomach, liver, lung, and colon & rectum, and female patients were done at cervix & uteri, stomach, and breast in order. Distribution pattern by physical regions did not agree with that of Seoul Dirstrict, but it was much the same each other when looking into it in division by sex. 5. Counting all 13,173 cancer patients in Seuol District by age, patients between 1 to 4 years old are 95 cases (0.72%), 5 to 14 years are 172 cases (1.30%), 15 to 24 years are 264 cases (2.00%), 25 to 24 years are 911 cases (6.92%), 35 to 44 years 2,010 cases (15.26%), 45 to 54 years are 2,732 (20.74%), 55 to 64 years are 4,238 cases (32.17%), and 65 years and older are 2,751 (20.88%). The most is found in the age between 55 to 64 years, in the age over 65 is the next found in number, and then comes the group of 45 to 54 years. So patients from 45 to 65 compose over 70%. 6. Grouping cancer patients in Kwangju District by age, patients between 1 to 4 years old are 35 cases (1.15%), 5 to 14 years are 45 cases (1.48%), 15 to 24 years are 66 cases (2.18%), 25 to 34 years are 136 cases (4.49%), 35 to 44 years are 339 (11.18%), 45 to 54 years are 579 cases (19.10%), 55 to 64 years are 1,001 cases (33.01%), and 65 years and older are 831 (27.41%). The most is found in the age between 55 to 64 years, and then comes the group in the age over 65, and then does that of 45 to 54 years in order. Those from 45 to 65 compose over 70% here too. That makes almost similar pattern of distribution of cancer patients in age groups. 7. Of the whole 100,715 cancer patients all over the nation in 1992, 6,672 cases (6.62%) are from Seoul District, and 692 cases (0.96%) are from Kwangju District. Cancer patients all over the nation are composed of 24,215 cases (24.04%) of stomach cancer, 10,647 cases (10.57%) of cervix & uteri cancer, 9,769 cases (9.70%) of lung cancer, and 9,620 cases (9.55%) of liver cancer in order. The whole 6,672 cancer patients in Seoul District in 1992 are composed of 1,450 cases (21.738%) of stomach cancer, 735 cases (11.12%) of lung cancer, and 675 cases (10.21%) of liver cancer in order. Of the whole 692 cancer patients in Kwangju District are 160 cases (23.12%) of stomach cancer, 110 cases (17.34%) of cancer at colon and rectum, and 81 cases (11.71%) of cancer at liver in order. By physical region, two districts show different pattern of distribution. In Kwangju District, stomach, the most frequently attacked region by cancer is followed by colon and rectum. 8. Of all 6,865 cancer patients in Seoul District, as methods to diagnose to detect cancer 4,737 cases (69%) were detected by histologic test at the primary cancer-struck area, 1,098 cases (16%) by clinical investigation, and 481 cases(7%) by cytodiagnostic test in order. In Kwangju District, 1,014 cases (63%) were diagnosed by histologic test at the primary cancer-struck area, 369 cases (23%) by clinical investigation, and 195 cases (12%) by cytodiagnostic in order. In both Seoul, and Kwangju Districts, histologic test at the primary cancer-struck area, and clinical investigation account for over 85% of diagnosing methods applied to detection of cancer.

내분비 기능이 없는 췌장 도세포 종양-1예 보고

정재걸,박건춘,윤상기,한덕종,조영국 울산대학교 의과대학 1993 울산의대학술지 Vol.2 No.1

Nonfunctioning pancreatic endocrine tumor is a rare disease without showing any specific clinical manifestations. Indolent growth of this tumor has a prognosis in between functioning endosrine tumor of pancreas and exocrine adenocarcinoma. We experienced a nonfunctioning pancreatic islet tumor in 59 year old male patient. The tumor in the body of pancreas was clinically silent and had no hormonal activity in immunohistochemical staining

후방 비출혈 환자에서 비내시경하 전기소작술의 치료효과

김재영,이민우,김진국,한창준,남태욱,임채형 건국대학교 의과학연구소 2001 건국의과학학술지 Vol.11 No.-

Background and Objectives : Epistaxis is a common disease from which approximately 10% of the normal population have suffered in their life. Most bleeding sites of epistaxis are located anteriorly and easily controlled. However posterior epistaxis presents significantly great problems. A number of different treatment modalities are used to control the posterior epistaxis. Although not widely practiced, the nasal endoscopic electrocautery has also been effective. The purpose of this article is to report on the efficacy of nasal endoscopic electrocautery as an alternative and adjuvant to the standard approach for control of posterior epistaxis. Materials and Methods: We conducted retrospective chart review about 19 cases of posterior epistaxis treated from January 1998 to December 1999. Group I patients were managed by nasal packing only and group II patients were managed by nasal packing and endoscopic electrocautery. Results: Hospital days were 5.9 days in the group I and 3.6 days in the group II. The duration of nasal packing was 4.1 days in the group I and 1.8 days in the group II. The results were significant statistically Conclusion: Nasal endoscopic electrocautery was an effective treatment modality for control of posterior epistaxis.

C - Scan을 이용한 시편 내부의 결함 측정 및 탐상 (Ⅱ)

玄淸男,韓材國 弘益大學校 産業技術硏究所 2004 産業技術 Vol.14 No.-

In this study, the flaws in the several test specimens are detected by using a C-Scan system. The following results are obtained through this research; 1. How to detect the flaws in the specimens 2. How to determine the depth of the flaws in the specimens 3. How to determine the size of the flaws in the specimens 4. How to determine if the specimen is in one piece or not and how to detect defects at the joining part 5. Analysis by using Linear Profile and 3D View In order to determine the depth and size of the flaws in the specimens precisely, it is very important to operate the C-Scan system properly

PC를 이용한 웹 기반 원격 방사선 인터넷 PACS 설계 및 구현

지연상,김승국,한재진 광주보건대학 2001 論文集 Vol.26 No.-

This study can get the result below with the embodiment of INTERNET- PACS system. 1. This study is to embody the INTERNET-PACS that can use the main functions of high-priced PACS that can be used in the general small hospitals by the embodiment on the general PC. And it made the burden about the additional expenses decreasing at maximum by the development of DICOM converter algorithm and by the interlock with the existing devices. 2. Also it could expand the PACS in stage as well as it made the information transmission in the hospitals through the network easy at the same time with the share of the client and the server on a system. 3. The embodied INTERNET-PACS system have advantages that have independent image management and operation system and that can make the system more flexible in its embodiment because the standard protocol is used in the internet recently.

초음파치료가 종양세포에 미치는 효과

김지원,이국일,한재문 한국전문물리치료학회 1997 한국전문물리치료학회지 Vol.4 No.1

수면 다원검사상 정상인 단순 코골기 환자에서 레이저 수술의 임상적 효과

김경수,이정권,김성식,박국진,한재욱,김원석 대한이비인후과학회 1998 대한이비인후과학회지 두경부외과학 Vol.41 No.3

α-ZnAl₂S₄단결정의 Energy Gap의 온도 의존성에 대한 열역학적 함수 추정

심상흥,심낙순,박종국,오재한,박광호 三陟大學校 1999 論文集 Vol.32 No.1

In this work ? single crystals were grown by the chemical transporting reaction(CTR) method using high purity(6N) elements. The structure of grown ZnAl2S4 single crystals were cubic structure. The optical energy band gap was indirect band gap and the temperature dependence of optical energy gap was fitted well to Varshni equation. Also, the entropy, enthalpy and heat capacity were deduced from the temperature dependence of optical energy gap.