• Asian Pacific Journal of Cancer Prevention
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• 제15권22호
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• pp.9725-9730
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• 2014

Background: Sister chromatid exchange (SCE) in human peripheral blood lymphocytes is one of the most extensively studied biomarkers employed to evaluate genetic damage subsequent to pesticide exposure. Objective: To estimate the pooled levels of SCE in human peripheral blood lymphocytes among population exposed to pesticide. Materials and Methods: Meta-analysis on the association between SCE frequency and pesticide exposure was performed with STATA 10.0 software package and Review Manager 5.0.24 in this study. Results: The overall means of SCE were 7.88 [95% confidence intervals (95%CI): 6.71-9.04] for exposure group and 6.05 (95%CI: 5.13-6.95) for controls, respectively. There was statistically significant difference in the SCE frequency in human peripheral blood lymphocytes between pesticide-exposed groups and control groups, and the summary estimate of weighted mean difference was 1.69 (95%CI: 1.01-2.38). We also observed that pesticide-exposed population had significantly higher SCE frequency than control groups among smokers, nonsmokers, pesticide applicator, pesticide producer, other exposure population and Asian population in stratified analyses. Conclusions: Data indicate that the SCE frequency in human peripheral blood lymphocytes might be an indicator of early genetic esffects for pesticide-exposed populations.

• 농약과학회지
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• 제9권4호
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• pp.311-315
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• 2005

농약 제품의 제조기업에서는 여러 가지 제품을 연속적으로 생산하고 있으므로 품질관리를 위한 동시 또는 연속적인 제품분석의 필요성이 있다. 본 연구는 생산현장에서 신속하고 정확한 제품의 품질관리를 위하여 일정한 분석기기 조건에서 각각의 성분을 혼합하여 한번주입으로 여러 성분을 동시에 분석할 수 있는 다성분 동시분석에 관한 연구를 수행하였다. 대상농약은 iprobenfos 17%GR, isoprothiolane 12%GR, tebufenozide 20%SC를 선정하여 GLC와 HPLC를 이용하여 분석을 실시하였다. GLC를 이용한 분석에서는 iprobenfos와 isoprothiolane 등 2성분이 동시분석 가능하였으나, tebufenozide는 검출이 되지 않아 분석이 불가능하였다. HPLC를 이용한 분석에서는 iprobenfos, isoprothiolane, tebufenozide 등 3성분 모두 동시분석이 가능하였다.

• Journal of Microbiology and Biotechnology
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• 제21권8호
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• pp.858-860
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• 2011

Production of biosurfactant can be substantially increased by the addition of precursors like vegetable oils, petroleum products, and other water-insoluble substances. Pseudomonas Ptm+ strain produces biosurfactant in the presence of hexachlorocyclohexane (HCH), which specifically emulsifies HCH, a recalcitrant organochlorine pesticide. Addition of previously produced crude biosurfactant by the same organism as a precursor instead of HCH increased production of biosurfactants with a decrease in the total fermentation time from 32 to 24 h. The main objective of this paper was to find alternatives for HCH as an inducer.

• 한국응용곤충학회지
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• 제22권2호
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• pp.106-129
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• 1983

An emphasized analysis and reviews on the progress of pesticide managements for the past 10 years through the statistics in Korea are summarized in this continued studies in connection with the fundmental aspects and direction of advanced pesticide industry and improved plantprotection policies for 1980's. Remarkable development and changes are observed in the plant species and varieties, plantation practices and production techniques as well as pest infestations and controls in the last decade, but no normal achievement and operations are recognised on the pesticide management and marketing system especially. Realistic plant protection adminstration and pesticide regulations in accordance to the industrial modernization and pest management advancement must be adjusted in accordance with national economic progress and desirable agricultural structure for 1980's. Special considerations are stated on the strengthening of research and inspection program for the quality products and control with the efficacy and safety use of pesticides. More serious attentions are noted on the over production and flooded stocks under struggled market demands and sales competitions with lethal financial difficulties by producers. Through the status analyzed for the last decade, the integrated past management and cooperative basic control pattern under positive self-forecasting system by farmers are also urged for the effective and economic pest control measures. The problems and solutions discussed here ell the advanced pesticide management as well as the cooperation on the self-ordered quality control and market managing systems in 1980's as it is a desired projection for the further improvement. Most of outstanding and necessary statistics and data in the past decade are also summarized here for references in connection with the previous report.

• 환경생물
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• 제22권4호
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• pp.501-506
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• 2004

In organic agriculture, choose of effective and cheap bio-pesticide is very important. The authors developed an insecticidal extract from neem cake, waste of neem oil from kernel, and applied as a bio-pesticide. Bio-pesticide neem cake extracts experiment on cabbage pest was carried out at Wonju Agricultural Technology and Extension Center from 11 March to 30 May 2003. There were six treatments with three replications, using completely randomized design. Treatments involved three and six sprays of synthetic pyrethroid pesticide cypermethrin 10 EC at the dilution rate of 2.2 mL $L^{-1}$ of distilled water and four, five and six sprays of bio-pesticide neem at the dilution rate of 13.3 mL $L^{-1}$ of distilled water, and untreated control. For each treatment, designated sprayings were done at 7 days interval. Pre-spray data showed that the plants in all the experimental plots were already infested with aphid (Aphis gossypii), and diamondback moth (Pluetella xylostella). The results indicated that all neem pesticide treatments were more effective in insecticidal activity than the untreated control and the chemical treatments in controlling aphids and diamondback moth. Among the three neem treatments, there were no significant differences between them.

• 현장농수산연구지
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• 제23권2호
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• pp.87-97
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• 2021

한국농수산대학 재학생 및 졸업생 151명을 대상으로 병해충 관리 현황을 조사하기 위해 설문조사를 수행하였다. 설문 내용은 기본문항과 병해충 관리 문항으로 구성되어 있다. 기본문항에는 응답자의 연령, 학적상태, 재배작물, 재배면적등을 포함하고 있으며, 병해충 관리 문항에는 병해충 방제 방법, 농약 선택 근거, 병해충 예찰 방법 등을 포함하고 있다. 기본문항의 응답을 요약하면 전체 응답자 중에서 20대 응답자가 91.2%로 가장 높았고, 응답자의 재배 면적은 3헥터 이상이 34.5%로 가장 높은 비중을 차지하고 있었다. 병해충 관리 문항의 응답을 요약하면 병해충 관리 방식에서는 화학적 방제법이 66%로 가장 높은 비중을 차지하였다. 농약 선택 근거에서는 본인 스스로 기존의 방제 기술을 토대로 결정(30%)하거나 농약 판매상(29%)의 결정을 따랐다. 병해충 예찰 방법은 농촌진흥청 소속기관(29%)과 국가농작물병해충관리시스템(27%)을 활용하는 것으로 나타났다. 농약 판매상의 병해충 진단과 농약 처방에 대한 질문에 응답자의 97%가 보통 이상의 신뢰도를 보였으나 강한 신뢰도를 선택한 경우는 전혀 없었다. 병해충 진단 및 농약 처방을 위한 전문인력 양성 필요성에 대해서는 응답자의 79%가 높은 필요성이 있는 것으로 응답하였는데, 특히, 응답자의 47%는 매우 강한 필요성이 있다고 응답하였다. 이러한 결과는, 병해충 진단과 농약 처방을 위한 정교한 기술을 지닌 병해충 관리를 위한 전문인력이 농업 현장에 필요함을 의미한다. 농민의 시각에서 조사한 설문 결과는 병해충 관리 현황을 이해하고 향후 발전 방향을 제시하는 데 중요한 정보를 제공해 줄 것이다.

• Asian Pacific Journal of Cancer Prevention
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• 제17권8호
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• pp.3979-3982
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• 2016

Background: Thailand remains a primarily agricultural country and Thai farmers are heavy users of pesticides. Coincidentally the incidence of cholangio carcinoma (CCA) is high in parts of the country, but no previous study has examined any association between the two. Materials and Methods: The present matched, case-control study covered patients admitted to Srinagarind Hospital, Khon Kaen University, Thailand. The case group comprised 210 cases diagnosed with CCA and the control group 840 diagnosed with other diseases. Cases and controls were matched for sex, age within five years, and date of admission within three months. Multiple conditional logistic regression was used for the analysis. Results: After adjusting for potential confounders, pesticide use as compared with never used pesticide was not associated with CCA (ORadj=1.11, 95% CI: 0.77, 1.60) and neither was there any significant relationship between CCA and duration of pesticide use, type or number of types pesticide use. Conclusions: The current study thus found no association between pesticide use and CCA.

• Journal of Microbiology and Biotechnology
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• 제23권12호
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• pp.1717-1725
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• 2013

Traditional soybean paste from Shandong Liangshan and Tianyuan Jiangyuan commercial soybean paste were chosen for analysis and comparison of their bacterial and fungal dynamics using denaturing gel gradient electrophoresis and 16S rRNA gene clone libraries. The bacterial diversity results showed that more than 20 types of bacteria were present in traditional Shandong soybean paste during its fermentation process, whereas only six types of bacteria were present in the commercial soybean paste. The predominant bacteria in the Shandong soybean paste were most closely related to Leuconostoc spp., an uncultured bacterium, Lactococcus lactis, Bacillus licheniformis, Bacillus spp., and Citrobacter freundii. The predominant bacteria in the Tianyuan Jiangyuan soybean paste were most closely related to an uncultured bacterium, Bacillus licheniformis, and an uncultured Leuconostoc spp. The fungal diversity results showed that 10 types of fungi were present in the Shandong soybean paste during the fermentation process, with the predominant fungi being most closely related to Geotrichum spp., an uncultured fungal clone, Aspergillus oryzae, and yeast species. The predominant fungus in the commercial soybean paste was Aspergillus oryzae.

• 농약과학회지
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• 제15권4호
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• pp.529-544
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• 2011

분석표준화 관련 국제기관인 ISO, CIPAC 등은 농약제품 시험기관에 대한 정도관리(QC), 숙련도 시험 및 분석법 검증을 수행하기 위한 요구조건을 지침서로 제시하고 있다. 일반적으로, 숙련도 시험은 시험기관의 분석능력 평가를 위하여 시험기관간 비교시험을 바탕으로 시험기관의 수행능력과 기술능력 정도를 판단할 수 있다. 분석법 검증 절차는 정도관리(QC)에서 중요한 단계 중 하나로 특이성, 선택성, 직선성 등의 항목들이 포함되며, 대부분의 국제기관이 농약제품 중 주요성분에 대한 정량분석법에서 재현성, 정확성 및 정밀성 등을 요구하고 있다. 본 연구에서는 농약 이화학시험 분석기관의 시험연구과정 및 결과에 대한 신뢰성을 높이기 위해 국내 외 정도관리에 관한 지침서를 비교 검토하여 국제적으로 표준화된 지침서에 적합한 구체적이고, 효율적인 농약 이화학시험 분석기관의 농약분석법 검증절차 및 시험기관 정도관리 체계(안)를 제안하고자 한다.

• 한국의류학회지
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• 제11권2호
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• pp.91-100
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• 1987

To develop the comfortable pesticid-proof clothes, wearing trials for 7 types of existing pesticide-proof clothes were done measuring skin temperature, pulse rate, humidity and temperature of inside clothing and subjective feeling such as thermal, humid and comfort sensations at $28{\pm}1^{\circ}C$, $75{\pm}5\%$ RH, 2.3 m/sec wind speed. (Experiment 1). On the base of above results, wearing trials of 6 types of new pesticide-proof clothes and 3 types of pesticide-proof clothes as control group were done with the same method as experiment 1. (Experiment 2). The results obtained were as follows 1. Heat stress was lower in newly designed pesticide-proof clothes with mesh running shirts. 2. For the body temperature regulation, it was confirmed that 6 types of new pesticide-proof clothes made of microporous fabric were better than the others.