• 농약과학회지
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• 제12권2호
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• pp.177-183
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• 2008

고랭지배추 재배지에 발생하는 나방류 해충의 종합적 관리를 위해 생물적방제와 화학적방제의 조화로운 사용에 의한, 배추 재배 시 사용되는 약제 중, 배추좀나방의 천적인 큰밤고치벌(Microplites mediator)에 대해 저독성을 보이는 약제를 선발하였다. 큰밤고치벌에 대한 저독성 약제 선발 방법으로 분무법(Spraying method), 잎침지처리법(Leaf dipping method) 및 충체침지처리법(Body dipping method)을 확립하였다. 배추에 등록되어 있는 주요 살충제 31종을 추천농도로 희석한 후 큰밤고치벌 성충을 충체침지처리한 결과 16종이 저독성 약제로 선발되었으며, 배추에 등록된 살균제 및 제초제 15종은 큰밤고치벌(Microplites mediator) 성충에 모두 독성이 낮았다.

• 한국응용곤충학회지
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• 제46권2호
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• pp.251-259
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• 2007

고랭지배추 재배지에 발생하는 나방류 해충의 방제에 생물적방제와 화학적방제의 조화로운 이용을 위하여, 배추 재배 시 사용되는 약제 중 배추좀나방의 천적인 배추나비고치별 (Cotesia glomerata) 에 대해 저독성을 보이는 약제를 선발하고 잔류독성을 평가하였다. 배추나비고치벌에 대한 저독성 약제선발 방법으로 먹이처리법 (Diet treatment method), 잎침지처리법 (Leaf dipping method) 및 충제침지처리법(Body dipping method) 을 확립하였다. 배추에 등록되어 있는 주요 살충제 31 종을 추천농도로 희석한 후 배추나비고치별 성충을 충체침지처리한 결과 22종이 저독성 약제로 선발되었으며, 배추에 등록된 살균제 및 제초제 15 종은 배추나비고치별 성충에 모두 독성이 낮았다. 배추에 13 종의 살충제를 처리하여 일수별로 배추나비고치벌 성충에 대한 잔류독성을 평가한 결과, 약제처리 l일후에 방사해도 안전한 약제는 thiacloprid, acephate, chlorfenapyr, clothianidin의 4 종이었으며, 3 일후에 방사가 가능한 약제는 imidacloprid, deltamethrin, thiamethoxam, dimethylvinphos, emamectin benzoate이었다.

• 자원환경지질
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• 제17권1호
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• pp.49-55
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• 1984

유도 분극법에서 지하의 경사 물체에 대한 3차원 표준곡선을 해석하였다. 이들 물체 대한 쌍극자 IP 응답은 적분 방정식을 이용한 수치계산 방법으로 구해졌다. 이때 물체의 경사각은 각각 0,20. 45,70 및 90도 이다. 물체가 수평 (경사각 0 도) 및 수직(경사각 90도)일 때는 단면도에서 대칭성 IP 패턴이 되지만, 20, 45 및 70도로 경사하고 있을 때는 최대값의 등치선이 물체의 경사 방향과 반대 방향으로 기울어져 있는 비대칭성 패턴을 나타낸다. 이중 가장 현저한 비대칭성 패턴은 20도 경사 모델에서 나타났다. 쌍극자 IP 데이터로서 70도 경사물체와 수직물체를 식별하기는 어렵다. 또한 측선이 물체의 중심에서 주향방향으로 멀어질 때의 반응은 IP anomaly가 작은 값으로 단면도에서 보다 깊은 곳에 나타나게 된다. 한편, 탐사대상물의 위치를 추정할 때 평면도는 단연도보다 유용할 것으로 생각된다.

• 대한통합의학회지
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• 제4권4호
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• pp.109-117
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• 2016

Purpose : This study was designed to provide basic data of effective sanitization method of sprout vegetable for microbiological safety. Methods : Sanitization treatments were performed by dipping the sprout into chlorine and vinegar water. Microbial analysis were composed of the total plate count(TPC) and coliform group count(CGC). Result : Among chlorine water sanitization, the microbial reduction was largest in 100ppm chlorine water, and its TPC and coliform group count decreased to 6.01 log CFU/g and 5.06 log CFU/g. The effective dipping time in 100ppm chlorine water treatment was 5.97 log CFU/g and 5.91 log CFU/g for 30min and 60min, in which TPC were below the microbiological safety limits of 6.00 log CFU/g. Coliform group counts were decreased to 5.44, 5.46, 5.42 log CFU/g in the dipping the spouts for 30min, 60min and 90min. As a result of sanitizing alfalfa spout by vinegar water, a microbial counts tended to decrease with increasing concentration and the dipping time. The effective concentration of vinegar water was 2% for TPC(6.00 log CFU/g) and 1% for coliform group count(5.20 log CFU/g). With 1% vinegar water treatment, TPC became below the microbiological safety limits in all samples and in particular, the sample treated for 60min and 90min(4.93, 4.54 log CFU/g). While coliform group counts were decreased to 3.91 log CFU/g in the dipping the sprouts for 90min, those were still beyond the permitted limit. Conclusion : To secure the food safety of food service facilities including kindergarten feeding, it is considered that along with the systematic study of effective disinfection method for microbiological control at the preconditioning level of spout vegetable within the range of secured maleficence to human body, and the study regarding the measures to lower the initial microbiological pollution of spout vegetable.

• 한국응용곤충학회지
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• 제46권3호
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• pp.415-423
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• 2007

화학적방제와 생물적방제를 상호보완적으로 사용하여 해충을 방제하기 위해 천적에 대한 저독성 약제와 천적의 안전방사시기를 설정하였다. 고추와 착색단고추에 등록되어 있는 52종(살충제 33종, 살균제 19종)의 살충 살균제를 충체침지처리법과 잎침지처리법으로 독성을 평가하였다. 살충제의 충체침지처리 후 애꽃노린재 성충에 대한 저독성약제는 milbemectin유제 등 14종이었으며, 잎침지처리법에 의한 저독성약제는 12종이었다. 처리한 살균제 19종은 모두 천적에 대해 저독성을 보였다. 약제살포 후 1일에 안전방사 가능한 약제는 pyraclofos, methomyl, thiodicarb, esfenvalerate bifenthrin, alpha-cyrermethrin, etofenprox, fenvalerate, imidacloprid, acetamiprid, abamectin, emamectin benzoate, spinosad, indoxacarb등 14종이었으며, 네오니코티노이드계 농약은 잔류독성이 길게 나타났다.

• 한국재료학회지
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• 제9권2호
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• pp.181-187
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• 1999

In this study, the effect of residual stress on mechanical strength was investigated with 1 kind of whiteware body and 4 kinds of glazes which are produced in succeeding ceramic art place. Using dipping method, the body was coated for different times in order to manipulate the coating thickness and sintered in the different temperatures ($1200^{\circ}C$, $1250^{\circ}C$, $1300^{\circ}C$, $1350^{\circ}C$) for two thus hours. The sintered bodies were characterized by XRD, EPMA, FEM and UTM in order to study the forming of reaction layer between body and glazes, residual stresses and the effects of residual stresses on mechanical strength of pottery. At $1300{\circ}C$, we obtained maximum density and mechanical strength. By the finite element method, the residual stresses in surface of body were minimum in specific thickness of glazes and the mechanical strength of body in that thickness of glazes showed maximum when the firing temperature was settled.

• 농약과학회지
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• 제8권4호
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• pp.347-352
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• 2004

시판되고 있는 39종의 살충제 중 밤바구미 성충(Curculio sikkimensis)에 대한 우수 살충제를 탐색하고, 선발된 약제로 야외포장에서 잔효성과 방제효과를 조사하였다. 실내검정에서 39종의 살충제 중 100%의 살충율을 나타낸 약제는 chlorpyrifos, fenitrothion, phenthoate, benfuracarb, thiodicarb, carbosulfan, bifenthrin, cypermethrin, $\lambda$-cyhalothrin, deltamethrin, clothianidin, acetamiprid+bifenthrin, etofenprox+diazinon, esfenvalerate+fenitrothion, furathiocarb+diflubenzuron, fipronil 등 16종이었다. 잔효성 시험에서는 phenthoate, benfuracarb, thiodicarb가 1일째까지는 80% 이상을 나타내었으나 그 이후로는 급속히 떨어졌다. 그 외 약제들도 잔효성은 낮았다. 야외포장 방제효과 시험에서는 phenthoate, thiodicarb, fipronil, acetamiprid+bifenthrin, furathiocarb+diflubenzuron이 1일째부터 90% 이상의 높은 방제효과를 나타내었다.

• 한국어병학회지
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• 제25권3호
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• pp.211-219
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• 2012

암피실린 (ampicillin, AM) 을 넙치 (평균체중 300g, $20{\pm}1.0^{\circ}C$) 에 1일 1회 경구 (10, 20, 40mg/kg), 근육주사(5, 10, 20mg/kg), 약욕 (10, 20, 40ppm; 1시간) 한 다음, 경시적 (1시간~360시간) 으로 혈장 내 AM의 잔류량을 HPLC로써 분석하였다. 10, 20 및 40mg/kg로 경구 투여한 경우, 최대혈중농도가 모두 10시간째 각각 $3.62{\pm}0.97$, $5.20{\pm}0.70$ 및 $11.18{\pm}0.87{\mu}g/ml$로 나타났으며, 이들은 각각 144, 360 및 360시간째 검출되지 않았다. 5, 10 및 20mg/kg의 농도로 근육주사한 경우, 최대 혈중농도가 모두 5시간째 $6.92{\pm}1.29$, $9.89{\pm}2.22$ 및 $19.85{\pm}2.97{\mu}g/ml$를 나타내었으며, 이들은 각각 216, 264 및 264시간째 혈중에서 검출되지 않았다. 10, 20 및 40ppm의 농도로 약욕한 경우, 최대혈중농도가 모두 3시간째 $4.39{\pm}1.10$, $9.57{\pm}1.51$ 및 $11.61{\pm}1.92{\mu}g/ml$로 나타났으며, 이들은 각각 264, 264 및 360시간째 혈중에서 검출되지 않았다. 이로써 경구, 주사 및 약욕 투약에 의한 넙치 혈액 중 분포와 배설정도는 투약량에 의존적 경향이라는 것을 알 수 있었다.

• Journal of Welding and Joining
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• 제18권3호
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• pp.51-59
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• 2000

Sink roll has been used in molten 55%Al-Zn alloy bath of continuous galvanizing line for sinking and stabilizing working steel strip in molten metal bath. In the process, the sink roll body inevitably build up dross compounds and pitting on the sink roll surface during 55%Al-Zn alloy coated strip production, and the life time of the sink roll is shorten by build up dross compounds and pitting. The present study examined the application of thermally sprayed ceramic coatings method on sink roll body for improving erosion resistance at molten 55% Al-Zn pool. In this experiment, the stainless steels such as STS 316L and STS 430F were used as the substrate materials. The CoNiCr and WE-Co powder were selected as bond coating materials. Moreover $Al_2O_3-ZrO_2-SiO_2 and ZrO_2-SiO_2$ powders selected as the top coating materials. Appearances of the specimens before and after dipping to molten 55%Al-Zn pool were compared and analyzed. As a result of this study, STS430F of substrate, WC-Co of bond spray coatings, $ZrO_2-SiO_2$ power of top spray coatings is the best quality in erosion resistance test at molten 55%Al-Zn pool

• 자원환경지질
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• 제14권3호
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• pp.111-122
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• 1981

This study is a model analysis for an effective application of the geophysical prospecting to the investigation of geological structures or useful resources, and the purpose of it is to research a property of the electrical resistivity prospecting, especially by using a Three-Point electrode array method. In using the Three-Point electrode array method, it is theoretically assumed to choose the infinite for a distance between the two current electrodes, however it is impossible in applying to the practical field prospecting. Therefore this study was conducted for determination and presentation of a minimum appropriate distance between the two current electrodes by making a study on prospecting effect in the variation of distance between both the electrodes. In case that the ratios of the distance between the two current electrodes to that between the two potential electrodes are respectively chosen for 40, 400, 5,000, the experimental data of this study showed that the minimum appropriate distance between the two current electrodes is forty times as much as that between two potential electrodes. In order to make clear a problem about prospecting depth which is essential to the data processing, it had been chosen equally to the distance between two potential electrodes. As a result of it, it was shown that the anomaly is appeared along the position of an assumed ore body. Consequently it was found out that the prospecting depth of the Three-Point electrode array method is the same as the distance between the two potential electrodes. From the model experiment on the sheeting ore body(or linear structure) of horizontal, dipping of $30^{\circ}$, $60^{\circ}$ and vertical on the basis of above experimental condition, it was found out that the position and dip of assumed ore body could be inferred from the aspects of the equiresistivity curve. In consequence of performing out the simultaneous Normal and Reversal electrode movement, it was shown that the electrode movement of the Reversal forms the anomaly more clearly than that of Normal when the sheeting ore body is situated obliquely, therefore it could be ascertained that the electrode movement have to be performed simultaneously in the manner of Normal and Reversal. It was also exhibited that the aspect of the equiresistivity curve forms symmetrically when an assumed ore body (or linear structure) is situated horizontally or vertically, that is, symmetrically, and moreover that the aspect of the equiresistivity curve forms unsymmetrically when an assumed ore body (or linear structure) is situated obliquely. On the basis of these experimental analysis it is thought that it can be inferred from the aspect of equiresistivity curve whether an assumed ore body is obliquely situated or not.