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대전시 노은 도매시장 채소류의 농약 잔류 실태 및 식이섭취량 추정
한국탁,이규승,이은경,이용재,고광용,원동준,이정원,권순덕 한국환경농학회 2003 한국환경농학회지 Vol.22 No.3
대전시 노은 도매시장에서 채취한 6종의 채소류 중 농약잔류량을 조사한 후 이에 대한 위해성 평가를 실시하였다. 전체 100건의 분석시료 중 농약이 검출된 시료의 비율은 46.0%이었고, 잔류허용기준 초과비율은 6.0% 이었다. 검출비율이 높은 시료는 상추(85.0%), 깻잎(80.0%), 오이(60.0%) 순이었고, 상추 3건, 깻잎 3건이 허용기준을 초과하였다. 살균제는 dicar-boximide계, 유기염소계, azole계 농약, 살충제는 유기인계, 합성 pyrethroid계 농약이 많이 검출되었다. 검출빈도가 높은 성분은 procymidone, chlorpyrifos, chlorothalonil, cypermethrin, EPN의 순이었다. 위해성을 평가하기 위해서 각 농작물에 대한 농약의 추정 섭취량과 ADI를 비교한 결과, 허용기준을 초과한 깻잎의 bitertanol, triflumizole, iprobenphos가 다른 성분에 비하여 높은 비율을 보였다. 그러나 각 농산물의 식이섭취량이 적어 ADI에 대한 추정섭취량의 비율이 0.46%이하로 나타나 그 영향이 매우 낮은 것으로 판단되었다. Pesticide residues in some vegetables collected at Noeun wholesale market in Daejeon were surveyed and assessed their risk In 100 samples, the detection rate of pesticide was 46.0% and the rate exceed MRL was 6.0%. Commodities showing high detection rate were lettuce(85.0%), perilla leaf(80.0%) and cucumber(60.0%). Dicarboximide, organochlorine, and azole fungicides and organophosphorus and pyrethroid insecticides were detected. Detection frequency of pesticide was in the order of procymidone, chlorpyrifos, chlerothalonil, cypermethrin and EPN. When the estimated intake amount of the pesticides were compared with ADI to assess their risk, bitertanol, triflumizole and iprobenphos in perilla leaf were higher rate than the other vegetables. However the total amounts of intake of pesticides were estimated to less than 0.46% of ADI.
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Musgrave變法을 이용한 컵상귀(Constricted Ear)교정
한승규,김태연,정전은 大韓成形外科學會 1990 Archives of Plastic Surgery Vol.17 No.5
The constricted ears are relatively rare and constitute only 10% of all auricular malformations. whereas the minor forms occur in 2% of the general clinical population. the superior portion of the ear, including the helix, scapha, and posterior crus of the antihelix, are bent over and curl downward. The principles of surgical correction are the straightening of the cupping and the coverage of skin. For the correction of consticted ear, there are numerous techniques but they are relatively extensive, involving cartilage or skin flaps, cartilage graft, multi-stage operations. We adopted a modified Musgrave's technique by multiple radiating cartilage incisions and horizontal mattress sutures. 5 cases with constricted ear were treated with this technique and satisfactory aesthetic results were achieved and no significant postoperative complication was developed. The adventages of the modified Musgrave's technique were as followings : 1. The design was simple. 2. The procedure was easy under local anesthesia. 3. The operation time was short. 4. No donor site sacrifice was required.
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한국탁,박혜진,이규승,김일중,김규섭,조성민 한국환경농학회 2002 한국환경농학회지 Vol.21 No.4
대전시 노은 도매 시장에 서 채취한 과실류와 6종의 농약잔류량을 조사한 후 이에 대한 위해성 평가를 실시하였다. 전체 120건 분석시료 중 70.8%가 농약 성분이 검출되었고 그중 1.67%가 잔류허용기준치을 초과하여 검출되었다. 검출 비율이 높은 시료는 사과, 복숭아, 포도 등이었다. 검출된 성분에서 살충제는 유기인계, 합성 pyrethroid계, 유기염소계가 비슷한 비율로 검출되었고, 살균제에서는 특히 procymidone(dicarboximide계)과 chlorothalonil(유기염소계)의 검출비율이 높았다. 검출빈도가 높은 성분은 chlorothalonil, chlorpyrifos, fenvalerate, procymidone, deltamethrin, EPN의 순이었다. 위해성을 평가하기 위해서 각 농작물에 대한 농약의 추정섭취량과 ADI를 비교한 결과, 추정섭취량의 비율이 1.221%이하로 나타나 그 영향이 매우 낮은 것으로 판단되었다. 이것은 농약 잔류 허용기준치를 초과한 농작물인 복숭아에서 chlorothalonil, EPN에 대해서도 동일한 결과를 나타내었다. Pesticide residues in some fruits collected at Noeun wholesale market, Daejeon were surveyed and assessed its risk. In 120 samples, the detection rate of pesticide was 70.8% and the rate exceed MRL was 1.67%. Highly detection rate of commodities was apple, peach and grape. Organophosphorus, organochlorine and pyrethroid insecticide were found with similar rate relatively, but most of fungicides were procymidone(dicarboximides) and chlorothalonil(organochlorine). The order of detected pesticide were chlorothalonil, chlorpyrifos, fenvalerate, procymidone, deltamethrin and EPN. In order to assess risk, estimated intake amount of each pesticide was compared to ADI. Although some peach were exceed MRL, the total amount and uptake pesticides was less than 1.22% comparing to ADI.
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한승규,김우경,Mark E. Mason 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.4
Recent advances in cell culture and tissue engineering permit the successful treatment of deep articular defects with autologous chondrocyte transplantation. While chondrocyte culturing from articular cartilage is commonplace, in vitro growth of chondrocytes from temporomandibular joint fibrocartilage has not been defined. Likewise, the concept of autologous chondrocyte transplantation has not been applied to the temporomandibular joint. Since fibrocartilage differs structurally and functionally from articular cartilage, an effective culturing method for this tissue is essential as well. The ultimate goal of this project is to enable the use of autologous temporomandibular joint chondrocyte transplantation for the regeneration of damaged or missing components of the joint. The aim of this pilot study is to develop an effective cell culturing technique for chondrocytes harvested from the temporomandibular joint disc of dogs. Cartilage of the temporomandibular joint disc of drug-free mongrel dogs was dissected, dissociated, and centrifuged for chondrocyte collection. Blood specimen was collected from the same animal to produce the autologous serum. Chondrocytes were then dispersed in 24-well plates and incubated in one of four media, DMEM (Dulbecco`s modified Eagle`s medium), Ham`s F-12, DMEM/F-12, or Iscove`s MDM(modified Dulbecco`s medium). Each medium was also mixed with either 10% fetal bovine serum or 10% autologous serum. Temporomandibular joint disc chondrocytic proliferation was tested in all the culture media with sera on the fifth day. The initial plating count was held constant throughout at 1×10⁴ cells/well and eight samples were evaluated in each culture. The results demonstrated that fetal bovine serum worked much better than autologous serum in all evaluated media and that DMEM/F-12 mixed with 10% fetal bovine serum was the most optimal culture condition for expansion of temporomandibular joint disc chondrocytes.
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한상목,강상규,이승섭,이병민 강원대학교 석재복합신소재제품연구센터 1998 석재연 논문집 Vol.3 No.-
돌로마이트 폐기물 슬러지에 Al(OH)₃와 SiO₂를 첨가하여 코디어라이트와 규회석을 합성하고자 하였으나 1250℃소성으로 코디어라이트는 MAS조성에서 합성되지 않았으며 규회석은 합성이 되었다. 돌로마이트 내화물의 내수화성을 증가시키기 위해 슬러지에 Fe₂O₃를 6%이상 첨가하여 소성한 결과 입계에 (Ca·Mg·Al·Fe)SiO₂의 생성으로 인하여 내수화성이 증가되었다. The possibility of synthesis for the cordierite and wollastonite with dolomite waste sludge, Al(OH)₃ and SiO₂ was studied. With the composition of MAS, the cordierite was not synthesized at sintering of 1250℃ and the wollastonite was made at the same temperature. The addition of Fe₂O₃ above 6% to the dolomite for the antislaking behavior has promoted the sinterability of dolomite and (Ca·Mg·Al·Fe)SiO₂ at grain boundary was affecting the increase of antislaking.
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