• 대한수의학회지
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• 제41권1호
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• pp.89-98
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• 2001

This study was conducted to detect the toxoplasma specific-DNA in circulating blood and organs collected from slaughtered pigs at slaughtering house and experimentally infected pigs with Toxoplasma gondii tachyzoites by polymerase chain reaction(PCR), and also PCR was applied to diagnose for acute phase of swine toxoplasmosis as a newly developed diagnostic test. The sensitivity of oligonucleotide primer, T-1 & T-2, designed from toxoplasma B1 gene amplification method was compared with Tp parasite detection by mouse inoculation(MI). On the other hand, latex agglutination test(LAT) was conducted to detect the serum antibodies comparing with the detection of toxoplasma by PCR and MI. The results obtained were summarized as follows. PCR was able to determine at the lowest level of $10^0/ml$ T. gondii in blood samples which were blended with a serial diluted T gondii in vitro. On the other hand, $10^2/5g$ of T gondii could detect from a variety of tissues including lung, diaphragm, liver, heart, spleen and brain in vitro. The primer was proved to specifically determine T gondii in blood and tissues in vitro but it did not detect Neospora caninum used as a negative control. DNA of T. gondii was effectively extracted by freezing, thawing and grinding twice both tissues mixed with T gondii in vitro and in experimentally infected pig's tissues. PCR detected specific DNA in the blood of experimentally infected pigs at 108 hrs and 120 hrs post-infection, it was the same time that the pigs showed fever and parasitaemia. In case of tissue, specific DNA was, however, detected only lung from experimentally infected pigs. Even though the duration of acute phase was from 3 to 7 days post-infection, but the latex agglutination test (LAT) results appeared from 8 days post-infection. A comparison of sensitivity in determining T gondii in blood samples between PCR and MI, PCR positive rate ranged from 25 to 33.3%, but that of MI covered from 75 to 100%.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.522-525
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• 2005

Light detection and ranging (LIDAR) is one of the effective technologies for monitoring forest inventory, and importance of forestry is increasing because of its function as the sink of green house gases (GHG). This study aims at development of a methodology for better and more accurate estimation of physical parameters of individual trees by removing sudden drops of LIDAR data within a crown. Our study area is located in Aomori prefecture, the northern part of Honshu Island, with the dominant species of Japanese cedar. The results show practicality of our method in the usage of LIDAR data in the field of forest inventory.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2011년도 제42회 하계학술대회
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• pp.1981-1982
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• 2011

본 논문에서는 통합자동원격검침시스템(전력량계, 가스계량기, 수도계량기)으로부터 주기적으로 취득된 전기, 가스, 수도 사용량 데이터를 분석하여 수용가 내 사람의 활동 및 비활동을 감지하는 방법, 수용가 내 사람의 활동 및 비활동 판단 임계치(Base Line, Base Level) 산출방법에 대해 연구하였다.

• 한국식품위생안전성학회:학술대회논문집
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• 한국식품위생안전성학회 2001년도 The Asia-Pacific Conference on Reproductive Biology and Environmental Sciences
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• pp.120-122
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• 2001

This study was carried out to monitor suspected endocrine disrupting pesticides and industrial organic chemicals among circulated agricultural products in the north area of Seoul in 2001. Procymidone, vinclozolin, endosulfan, chlorothalonil, chloropyrifos and pendimetaline (pesticides) and butylated hydroxytoluene(industrial organic chemicals) were certified by GC-MS. Detected 6 pesticides were remained mostly in the green vegetables, spices and wild plants with $3\%$ detected. Butylated hydroxytoluene(industrial organic chemicals) used for green house cover stuffs was contained mostly in the green vegetables, spices and wild plants not in the fruits and cereals with $43\%$ detected. In the same agricultural products containing butylated hydroxy toluene showed same detection tendency with remaining endocrine disrupting pesticides.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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• pp.168-170
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• 2006

In this paper, authors realize water AMR(Automatic Meter Reading) network using low power ZigBee protocol included routing ability for improving wireless communitation error detection and network range. ZigBee wireless standard is an important standard of the field related Ubiquitous industry and recently has application to Home-Network. It's special features are to spend low power and to include routing ability each terminator. Because of these features, authors realize water AMR system on Embedded system using ZigBee protocol for applying to transfer data between a water meter and RF module equipped with a water meter in each house.

• 대한가정학회지
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• 제37권3호
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• pp.111-125
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• 1999

This study aims at prediction of the children's in participation household work and supply of basic data for the children's home education to get a desirable family life through the investigation into their household work participation degree and its character and through the detection in its influencing factor. The research consequence can be summarized on the followings. The children's total participation degree of the household work records 3.13. Girls take part in the household work more than boys do in almost all household work areas. Variables which h3d influences on their participation are praise, sex distinction, assistant, and father's participation in house work.

• 근관절건강학회지
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• 제28권2호
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• pp.91-101
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• 2021

Purpose: This study was conducted to identify factors related to osteoporosis prevalence in postmenopausal women. Methods: This study was a secondary analysis research using data from the Eighth Korea National Health and Nutrition Examination Survey (KNHANES VIII-1), 2019, which were downloaded from the KNHANES website. The subjects of this study were 1,791 postmenopausal women who participated in the KNHANES VIII-1, 2019. Data analysis was performed using the IBM SPSS 21.0 program and complex sample design analysis was performed considering factors such as weight, cluster, and strata. Results: Osteoporosis prevalence of in postmenopausal women was 17.5%. Factors related to osteoporosis prevalence were age (65~74 years old, ≥75 years old), house income (low), household type (one-person household), postmenopausal period (10~19 years), drinking (non-drinking). Conclusion: Interventions for osteoporosis prevention and management in postmenopausal women need to focus on women less than 10 years after menopause and one-person household women. Furthermore, it is necessary to expand bone density testing for the early detection of osteoporosis in postmenopausal women.

• 항공우주기술
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• 제6권1호
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• pp.83-91
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• 2007

위성용 RF 수동 소자에 대한 MP(multipactor) 현상과 그 검출 방법에 대한 연구를 수행하였으며, 본 연구에 사용된 RF 수동 소자는 S 대역 diplexer로, 이는 인터디지털 타입의 5단 chebyshev 응답특성을 갖는 두개의 대역통과필터로 구성되며 2.232 및 2.055 GHz 대역에서 2.7 %의 대역폭을 갖는 구조로 각각 설계되었다. MP 민감도 해석을 위해 diplexer에 대하여 3D 전자기 모델링을 수행하였으며, 이를 통하여 diplexer 구조적으로 multipactor에 대하여 가장 민감한 부분을 정의 하였고 이때의 MP 방전 현상이 나타나지 않는 최대 RF 입력전력을 규명하였다. 또한 KARI 자체 개발한 MP 민감도 시험 시설을 이용하여 QM용 diplexer에 대한 시험을 수행하였으며, 그 결과 CW 모드에서 43 dBm, 펄스 모드 시험에서 44 dBm의 RF 입력 전력에서 MP가 발생됨을 확인 하였다.

• Asian Pacific Journal of Cancer Prevention
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• 제13권4호
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• pp.1407-1412
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• 2012

Background & Objectives: Gastric cancer is a leading cause of cancer-related deaths in both sexes in Iran. This study was designed to assess upper GI endoscopic findings among people > 50 years targeted in a mass screening program in a hot-point region. Methods: Based on the pilot results in Guilan Cancer Registry study (GCRS), one of the high point regions for GC-Lashtenesha- was selected. The target population was called mainly using two methods: in rural regions, by house-house direct referral and in urban areas using public media. Upper GI endoscopy was performed by trained endoscopists. All participants underwent biopsies for rapid urea test (RUT) from the antrum and also further biopsies from five defined points of stomach for detection of precancerous lesions. In cases of visible gross lesions, more diagnostic biopsies were taken and submitted for histopathologic evaluation. Results: Of 1,394 initial participants, finally 1,382 persons (702 women, 680 men) with a mean age of $61.7{\pm}9.0$ years (range: 50-87 years) underwent upper GI endoscopy. H. pylori infection based on the RUT was positive in 66.6%. Gastric adenocarcinoma and squamous cell carcinoma of esophagus were detected in seven (0.5%) and one (0.07%) persons, respectively. A remarkable proportion of studied participants were found to have esophageal hiatal hernia (38.4%). Asymptomatic gastric masses found in 1.1% (15) of cases which were mostly located in antrum (33.3%), cardia (20.0%) and prepyloric area (20.0%). Gastric and duodenal ulcers were found in 5.9% (82) and 6.9% (96) of the screened population. Conclusion: Upper endoscopy screening is an effective technique for early detection of GC especially in high risk populations. Further studies are required to evaluate cost effectiveness, cost benefit and mortality and morbidity of this method among high and moderate risk population before recommending this method for the GC surveillance program at the national level.

• 한국토양비료학회지
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• 제35권3호
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• pp.185-195
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• 2002

급변하는 농업환경을 신속히 파악하고 이에 대처한다는 것은 중요한 일이다. 특히 농경지의 이용형태가 다양화(多樣化)되고 고도화(高度化)됨에 따라 그 필요성이 한층 인정된다. 이에 부응하는 인공위성자료인 Landsat TM을 이용한 우리 나라에 가장 알맞은 지표면 변동탐지 방법에 대한 연구 결과를 요약하면 다음과 같다. 우리 나라에 알맞은 지표면의 변화탐지기법을 찾기 위해 화상간 차이법을 적용하였으며, 동시에 변화탐지도에 대한 평가를 위해 참조자료를 작성한 후 최적 임계값을 구하였다. 여기서 정상적인 참조자료(농경지가 인공물로 변한 경우는 양의 변화, 그 반대면 음의 변화)나 비정상적인 참조자료(인공물이 농경지로 변한 경우는 양의 변화, 그 반대면 음의 변화)로 평가하였다. 또한 최적 임계값은 '평균${\pm}$(표준편차 ${\times}$ T값)'로 하여 구하였다. 1987년부터 1993년까지 6년 동안 가장 결과가 좋은 화상간 차이법은 D1 화상(1.0)으로 정상적인 참조자료로 평가시 카파계수가 68.4%, 전체 정확도는 89.2%로 나타났다. 또한 전체면적 48,436 ha중 음으로 변화된 영역은 3,207 ha(6.6%), 양으로 변화된 영역은 5,117 ha(10.6%)로 밝혀졌다.