• Archives of Pharmacal Research
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• 제13권1호
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• pp.113-116
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• 1990

People in some tropical countries used to use some plant extracts in folklore medicine as treatment of diabetes melitus. Of these plants is Calligonum comsum ("orta"). The present work deals with the biochemical effects of the whole plant water extract given orally to the albino rats, normals and alloxan diabetics, as to fulfil its hypoglycemic effects on rats. The results showed that "orta" extract produced a hypoglycemic effect indicated by the decrease in blood sugar level. It was observed that the diabetic state in rats treated with 300 mg/kg body weight of "orta" extract, was alleviated, showeing normal levels of blood glucose, liver fat and cholesterol contents. Liver proteins were still below the normal level in the rats. Gibenclamide, a hypoglycemic drug, was used for comparison with "ora" extract. Although it did alleviate the diabetic state, yet the liver fat and cholesterol contents were still higher than those of normal. Also the liver proteins were lower than the control levels.

• 한국제4기학회지
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• 제17권2호
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• pp.39-41
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• 2003

Pollen and spores as well as their morphological characteristics are biological stability materials in which contains historical information about vegetation and climate changes. As noted researcher Neishtadt in 1971, the lake and swamp deposits were developed only in Holocene period. The geological history of Darkhad depression which is situated in the Northern end of Mongolia from ancient time become under scientific interest of many researchers. Our investigation was focused on pollen analysis of lake sediment of Darkhad depression which caused bottom of paleolake. In Mongolia the palynology science is beginning to develop since 1990 and in 2000 the laboratory of palynology was established at the department of Biology, State Pedagogical University of Mongolia. Researchers from this laboratory working on pollen morphology of present flora in order to classify plants taxonomy. Another part of our investigation is mellitopalynology, which is studying of pollen grains in a honey. Although, this research has been extending by pollen analysis of sediment and lake deposits in past few years on the basis of high sensitive microscope and modem technology.

• 한국가스학회지
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• 제22권3호
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• pp.84-90
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• 2018

정수장에서 염소 누출 사고 시 피해를 최소화하는 방안을 연구하였다. 장외영향평가의 위험도는 영향범위내 주민수와 사고 발생 빈도의 조합으로, 취급시설 운전온도, 긴급차단밸브 설치 위치 및 시설의 밀폐정도에 따른 피해범위 변화를 분석하여 피해범위 내 주민 수를 줄일 수 있는 최적의 조건을 제시하였다. 피해범위 산정은 KORA(Korea Off-site Risk Assessment Supporting Tool) 프로그램을 이용하였고, 운전온도가 낮아질수록, 용기의 브렌치 배관마다 긴급차단밸브가 설치될수록, 시설의 밀폐수준이 높을수록 피해범위가 감소하였다. 최악의 사고시나리오에서 감소율은 각각 17.6%, 71%, 34.5% 이며, 대안의 사고시나리오에는 각각 31.6%, 69.0%, 34.8% 이다.

• 한국가스학회지
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• 제21권5호
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• pp.95-103
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• 2017

제조산업 현장에서는 수많은 유해위험물질이 사용, 처리 및 생산되고 있으며, 암모니아를 취급하는 시설에서 많은 누출, 화재 폭발사고가 보고되고 있다. 유해위험시설에서의 위험관리 및 사고예방을 위하여 공정안전관리(PSM), 가스안전관리(SMS), 장외영향평가(ORA) 제도 등 다양한 안전환경관리 프로그램이 국내 산업현장에 적용되고 있고 학계에서도 위험성평가 관련 연구가 활발하게 진행되고 있다. 본 연구에서는 암모니아 입하 및 저장 시설을 대상으로 정량적 위험성평가가 수행되었는데 사고 시나리오에 대한 피해영향범위 산정에는 장외영향평가용 KORA 프로그램, 사고 빈도 분석에는 LOPA PFD 활용 방식을 적용하였다. 평가 결과 추정된 위험도를 완화하고 지속적인 위험을 관리하는 방안으로 누출 감지 및 비상 차단, 물 분무 및 증기 희석 설비, 방류벽 및 트렌치, 누출 비산 방호 등 공정 안전설계 하드웨어 개선부분과 위험관리기준 효과적 적용, LOPA 보완적용, 보조 피해영향범위 산정 프로그램 활용, 위험도기반 공정안전관리제도 적용, 공정위험성 재평가 및 이행성 관리 등 프로그램 및 제도 운용 측면에서의 방안이 제시되었다.

• 전자공학회논문지
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• 제53권3호
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• pp.151-159
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• 2016

본 연구의 목적은 가돌리늄 조영제를 사용한 Head & Neck MR Angio검사에 있어서 매개변수인 FA(Flip Angle)이 MR신호에 미치는 영향에 대해서 알아보고자 하였으며, 이에 따른 FA의 적정 값을 제시하는 것이다. 실험은 FA증가에 따른 MR팬텀실험과 임상실험으로 진행하였고, 이에 대한 정량적 분석이 이루어졌다. 실험결과 팬텀실험에서의 조영증강 반응시작 지점인 RSP(Reaction Starting Point)는 FA증가에 따라 300~400 mmol 사이에서 반응하였고, 최대 신호강도인 MPSI(Max Peak Signal Intensity)는 2,086, 3,705, 5,109, 6,194, 7.096, 7,192 [a.u]를 기록하였다. MPSI가 형성되는 몰농도 지점인 MPP(Max Peak Point)는 FA에 증가에 따라 40, 50, 50, 40, 50, 40 mmol에서 보였으며, MPSI의 증가율인 IRMPSI(Increase Rate of MPSI)는 77.6%, 37.9%, 21.2%, 14.6%, 1.4%임을 확인하였다. 임상실험에서의 평가기준인 SICB(Signal Intensity of Carotid artery Bifurcation)는 FA증가에 따라 각 평균값 2392.5, 4165.2, 4270, 3502.2, 3263.7, 3119.6 [a.u]를 기록하였고, 아티팩트 발생율인 ORA(Occurence Rate of Artifact)는 0, 0, 20, 40, 50, 70%로 점차 증가하였다. 본 연구를 통하여 FA의 증가는 혈관 내 가돌리늄과 결합한 H1스핀의 신호강도와 아티팩트에 영향을 미친다는 사실을 확인하였고, 이는 실제 임상에서의 CE(Contrast Enhanced)-Head&Neck MR Angio검사에 있어서 본 연구의 데이터를 활용한다면 진단학적으로 효율적인 MR Angiography 영상을 구현할 수 있을 것으로 사료된다.

• 한국산림과학회지
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• 제86권2호
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• pp.251-258
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• 1997

칠엽수과(科) 2속(屬)의 20종(種) 1변종(變種)에 대한 화분 형태를 광학현미경, 주사형전자현미경 그리고 투과형전자 현미경을 이용하여 관찰하였다. 화분립은 단립, 장구형 내지 아장구형, 등극성, 방사성 대칭, 발아구는 3공구형 혹은 3구형이며 내공구는 원형 또는 횡장형이다. 표면무늬는 유선상 혹은 자상이며, 골은 다양한 방향이다. 칠엽수과(科)의 화분을 발아구의 형태와 표면무늬에 의하여 hipppocastanum형, indica형 그리고 punduana형의 3가지 화분형으로 나눌 수 있었다.

• 아시안잔디학회지
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• 제15권1호
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• pp.1-8
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• 2001

Antifungal activity of 20 chemicals registered to turfgrass diseases was evaluated. Among the chemicals, iprodione, benomyl, iprodione+thiram, pencycuron+tebuconazole, hexaconazole, and iprodione+thiophanate-methyl exhibited high antifungal activity to the dollar spot fungus. All isolates were greatly inhibited by the chemicals at the concentration over 32ppm($\mu\textrm{g}$/ml). However, sensitivity of the isolates to chemicals was varied at the lower concentration as 8 and 16 ppm as follows. The isolate originated from Ora golf course was resistant to iprodione and iprodione+thiophanate methyl, Gonjiam isolate to iprodion, Youngpyung isolate to iprodione+thiram, and Dogo isolate to iprodione+thiram, pencycuron+tebuconazole, and tebuconazole. It was found from this study that the varied chemical resistance among the isolates was positively related to the application time of the chemical in the golf course. Consequently, when a chemical was applied more often times than the others to the golf course, the fungal isolates originate from the field showed higher resistance to the former chemical. Effects of the chemicals on control of the dollar spot was evaluated in the field. All tested chemicals revealed over 70% disease control efficacy, however, mepronil+propiconazole was the best showing 83% control efficacy and followed by fenarimo, iprodione, terbuconazole, thiram, and thiophanate-methyl.

• 비교문화연구
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• 제19권
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• pp.271-293
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• 2010

Japanese Give and Receive Verbs are divided into "YARU", "MORAU" and "KURERU". These are influenced by the subject, speaker's viewpoint and meaning. Three verbs are used in a different way depending on who is the giver and who is the taker. I analyze "YARU" and "KURERU" Verbs used in TOUSEISYOUSEIKATAGI. It focus on politeness, gender, and meaning when combined with 'TE'. As an expression of politeness, 'Yaru' is to give to a person of lower social status or an animal or plant. 'Ageru' is to give to an equal ora person of lower social status nowadays. However, 'Ageru' which is treated as elegance of the language remained expression of respect, 'Yaru' is used when the receiver is a person of lower social status and equal social status in TOUSEISYOUSEIKATAGI. 'Kureru' is used when the receiver is a person of lower social status and equal social status, 'kudasaru' is used when a person of higher social status gives the speaker something in TOUSEISYOUSEIKATAGI. Women speakers use 'oyarinasai' 'oyariyo' 'ageru' 'okureru' and men speakers use 'yaru' 'kureru'. Speech patterns peculiar to men are 'kuretamae' 'kurenka'. If the verbs are joined to "TE", they obtain abstract meaning as well as a movement of things. They express some modality for action of the preceeding verbs. The modality has the following meanings ; good will, goodness, benefits, kindness, hopeness, expectation, disadvantage, injury, ill will and sarcasm. In addition, 'TE YARU' expresses the speaker's strong will, 'TE KURERU' expresses the speaker's request.

• 한국환경보건학회지
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• 제44권2호
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• pp.124-132
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• 2018

Objectives: All enterprises intending to install and operate hazardous chemical handling facilities should prepare an off-site risk assessment (ORA) report that evaluates the impact of potential chemical accidents on the surrounding environment and population. This study was conducted to introduce the process of development and the functioning of the Korea Off-site Risk Assessment support tool (KORA) developed by the National Institute of Chemical Safety and to suggest manners to increase its utilization. Additionally, this article provided an overview of KORA. Methods: In order to identify problems with and refinements for KORA, the required items for each phase of KORA were derived by analyzing the Chemical Control Act and related administrative regulations. Results: The functions of KORA made receptor-considered assessment of chemical accidents possible, but several limitations were found in particular phases, such as the analysis of impact range, consideration of sensitive receptors, and assessment of environmental receptors. Conclusion: In this study, we suggested manners to increase the utilization of KORA. It is anticipated that the further research suggested in the study could contribute to the stabilization of the KORA system.