• 산경연구논집
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• 제10권12호
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• pp.15-23
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• 2019

Purpose : We will develop the distribution method of wide oil extract technology to develop repellent using this technology and study mosquito repellent persistence. Research design, data and methodology : A positive control group containing purified water, ethanol and picaridin was prepared, and the experimental control group was prepared in the same proportion as the positive control group, and 0.6% of broad oil was added. The results were summarized using the calculation method according to the avoidance effect and statistically tested by t-test using the excel statistics program. Results : Experiments on skin surface area and voice control of participants showed that men had 8.9% wider skin surface area than women, and voice control tests showed that women were bitten by mosquitoes five times more than men. Both the positive and the experimental control groups had a valid duration of up to three hours, but from the time of five hours, the positive control group had 77% and the experimental control had 90%, indicating a difference of 14.4% over the positive control group. Conclusions : The mosquito repellents developed in this study on the basis of safety and continuity are cost-effective in terms of mosquito repellent, and in addition fragrance, odor removal, perfume, ink, skin care and massage effect.

• Environmental Analysis Health and Toxicology
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• 제7권1_2호
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• pp.1-16
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• 1992

Biologically, MGK-264 (N-octyl bicycloheptene dicarboximide) acts as a synergists for insecticides mainly pyrethrins and pyrethroids. It's used extensively in combination with pyrethrin and piperonyl butoxide and also with personal insect repellent and cockroach repellents. But the toxic effect of MGK-264 in mamalians was a relatively little known therefore in this studies it was initiated to examine the toxic effect of MGK -264 in rats. For 5 weeks it administrated daily in each 250 mg and 500 mg of MGK-264 per kg of body weight in rats. 1) The body weight gain and the LYMPH (%) value in blood were observed a slight tendency to reduce in accordance with amount of dose and number treatment time. 2) The content of cytochrome P-450 and activity of NADPH-cytochrome c reductase were decreased in liver and those were observed some tendency in the kidney as liver but not significant. 3) The liver cholinesterase activity in the both 250 mg/kg and 500 mg/kg per kg of body weight with treated groups and the liver aniline hydroxylase in 500 mg/kg treated group were gradually decreased from 4 weeks after treated groups. In consequence it would sugested that the toxic effect of MGK-264 was low but in could offer hazard effect in liver and nervers system of rats if it was administrated move dose of MGK-264 and agumented in number of treated time.

• KSBB Journal
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• 제24권1호
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• pp.9-16
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• 2009

일반적으로 운동성세균은 영양분에 대하여 유인반응(정주화성)을 보인다는 것은 100여년의 주화성 연구 역사를 통하여 잘 알려져 있다. 그 중에 일부 환경오염물질을 분해 가능한 운동성 세균은 환경오염물질에 까지 유인반응을 보인다. 이 환경오염물질 감지 기능을 잘 활용한다면 '환경오염원까지 자발적으로 이동하여 그 화학물질을 분해하는 레이더 탑재형 환경정화세균의 개발이 가능할 것이다. 본 고에서는 지금까지 알려진 환경오염물질 감지를 위한 주화성 분자기구를 정리하고 향후 전망을 논하고자 한다.

• 한국응용과학기술학회지
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• 제12권2호
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• pp.51-58
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• 1995

To prepare a durable softening water repellent, quaternized octadecyl methacrylate-2-diethyl-aminoethyl methacrylate as a mother resin and quaternized 1, 3-dioctadecyl-2, 7-dioxy-6, 8-di(2-hydroxyethyl)-1, 3, 6, 8-tetraazacyclodecane which increase the softening effect and the hydrostatic pressure blended with waxes and their emulsifier in various proportions to give water repellent PADWC. As the results of the measurement of water repellency, washable, tear strength and crease recovery to polyestercotton(P/C) blended fabrics treated with PADWC only or addition of textile finishing resin, the physical properties were increased. There was no significant lowering effect in water repellency when PADWC was treated the antistatic agent by the one-bath method, and the effect of water repellency by the adding the catalyst was studied. PADWC was confirmed as durable water repellent with the results of making little difference of water repellency as ${\pm}5$ point after and before washing.

• 박물관보존과학
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• 제6권
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• pp.39-46
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• 2005

국립 중앙 박물관의 소장품은 다양한 재질로 구성되는데, 그 중 목재, 종이, 피혁 등 유기질로 이루어진 것들은 충균의 피해에도 민감하여 훈증에 의한 관리와 방충·방균제가 병용되고 있다. 본 실험에서는 박물관에서 사용되는 각종 재료들의 유해성을 판정하는 Oddy test를 응용하여 방충·방균제가 염색지의 색변화에 미치는 영향을 검토하였다. 그 결과 B사 H제품이 염색지의 색변화에 가장 영향을 적게 미치는 것으로 관찰되었다. 코치닐과 울금 염색지의 실험 결과에서 염색지와 함께 노출된 시편과 비교하여 대조군의 변화가 매우 크게 나타났다. 이는 시료보다 습도에 의한 영향이 크기 때문으로 생각된다.

• Parasites, Hosts and Diseases
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• 제59권5호
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• pp.465-471
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• 2021

Culicoides biting midges (Diptera: Ceratopogonidae) are hematophagous arthropod vectors that transmit epizootic arthropod-borne viruses (arboviruses). Arboviruses are recognized as causes of pregnancy loss, encephalomyelitis, and congenital malformations in ruminants. Therefore, continuous monitoring and control of Culicoides, which causes significant damage to industrial animals are necessary. We performed attraction and repellent tests in Culicoides using various essential oils, cow dung, and carbon dioxide (CO₂). Culicoides tended to move more to cow dung (60.8%, P<0.0001) and CO₂ (63.8%, P<0.01). To the essential oils as repellents, 26.1% (P<0.0001), 18.7% (P<0.001), and 25.5% (P<0.01) of the Culicoides moved to the lavender, lemongrass, and eucalyptus chamber, respectively. The Culicoides that moved to the 3 essential oils chambers showed markedly low activity. Collectively, it was showed that Culicoides tended to be attractive to cow dung and CO₂, and repellent from the 3 essential oils.

• 센서학회지
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• 제32권2호
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• pp.95-99
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• 2023

Forest healing is an activity that enhances immunity and human health using various elements of nature, such as fragrance and scenery. Particularly, phytoncide composed of terpene, a natural volatile substance emitted by forest plants, activates the immune function and is an important raw material in health-related products, such as antibacterial and insect repellents. Moreover, phytoncide is used as a measure to evaluate the impact of the forest atmosphere on the human body. This study aims to implement a highly sensitive gas sensor system that can measure phytoncide in real-time, which is an essential element for realizing a forest healing environment. A gas generation apparatus was implemented by using an adsorption tube in consideration of filed applicability in a laboratory atmosphere to enable the measurement of α-pinene and limonene, which are among the main components of phytoncide. Throughout the experimental trials, the sensitivity of gas sensor arrays to α-pinene and limonene was confirmed. In addition, the classification results demonstrated the AVOCs and NVOCs can be well discriminated using PCA. The primary results confirmed the possibility of developing a high-sensitivity gas sensor system for phytoncide sensing in real time.

• 한국유기농업학회지
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• 제26권2호
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• pp.259-268
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• 2018

The study investigated the efficacy of four different essential oils on the repellent responses of large black chafer (Holotrichia parallela) Motschulsky (Coleoptera: Scarabaeidae) in organic pear (Pyrus pyrifolia) orchards. Cinnamon, pine, peppermint, and eucalyptus oils were used, and the behavioral responses and repellent effects against H. parallela were investigated under laboratory and field conditions. Adult beetle responses to different oils were examined using a Y-tube olfactometer in the laboratory and four absorbent blocks with each oil in the field. The repellent responses rates of H. parallela were 100% for cinnamon oil; however, only 67% of adult beetles avoided peppermint and eucalyptus oil in the Y-tube olfactometer bioassay. In the field tests, the least damage to leaves was observed on trees treated with cinnamon oil, whereas the most damage was observed in the control (non-treated) trees and those treated with peppermint oil, followed by eucalyptus and pine oil. Therefore, cinnamon oil can be used as a repellent to avoid damage form large black chafers in organic pear orchards.

• 한국잠사곤충학회지
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• 제16권2호
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• pp.133-139
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• 1974

본실험은 상족기에 집중적으로 소요되는 노동력을 절감하기 위하여 숙잠의 자연등족을 촉진시키는 보조수단의 1종인 기피제에 대해서 연구하였는바 다음과 같은 결과를 얻었다. 1. 기피효과가 가장 현저한 것은 참나무계통이며 약쑥 개여뀌의 순으로 나타났다. 그 이외의 처리구도 기성등족제 シ ル ク ア ツ プ 처리구보다 등광률이 높은 것으로 미루어 보아 실용화가 기대된다. 2. 기선제의 조제방법은 증류액, 탕액 및 즙액의 형태로 조제하여 조강에 흡수시켜 시용하는 것이 등족효과가 우수하였다. 이 중에서도 가장 손쉬운 방법은 탕액이 라고 생각된다. 3. 기피제처리가 누에 생리에는 거의 영향이 없는듯하며 견질과 사질에도 별로 영향을 미치지 않는 것으로 보인다. 4. 본기피제를 잠좌에 처리했을 때 미숙잠도 등족하는 경향이 있으므로 기피제를 이용할 때는 숙화정도를 재일하게 해야만 더욱 효과적일 것으로 살펴진다.

• Applied Biological Chemistry
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• 제41권1호
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• pp.95-98
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• 1998

32과 54종 식물체 메탄올 조추출물의 생쥐에 대한 갉기억제활성을 전선침지법으로 조사한 결과, 활성은 식물종에 따라 달리 나타났다. 국화과의 목향(Aucklandia lappa) 뿌리, 녹나무과의 계피(Cinnamomum cassia) 수피, 목련과의대회향 (Illicium verum) 과육, 후추과의 후추(Piper nigrum) 과육, 마디풀과의 대황(Rheum officinale) 근경 및 소나무과의 적송(Pinus densiflora) 잎의 메탄올 추출물이 강한 갉기억제활성을 나타내어, 천연물 유래의 설치류 기피제로서 이들 식물체 유래 물질들은 설치류에 의한 피해 예방제로서 유용할 것으로 기대되었다.