잎담배 생산농가의 경작규모별 곁순방제 소요노동력 조사

최상진,김영신,이학수,석영선 충북대학교 연초연구소 2004 煙草硏究 Vol.19 No.-

This study was carried out to decect efficient method of sucker control classifed by cultivation hectarage per farm in 57 farms selected in the main producing districts of flue-cured and burley tobacco. In topping, it was no difference of working hours by cultivation hectarage per farm in flue-cured and burley tobacco. Suckering was the best in working hours among working type, and the more cultivation hectarage per farm was small, the more working hours of topping, suckering and application of suckercide was increased. Application of system suckercide shows a decrease as compared with application of contact suckercide but the decrease of working hours in application of contact suckercide by cultivation hectarage per farm was larger than in system suckercide. 경작면적별 효율적인 곁순억제방법을 알아보고자 황색종 및 버어리종 주산지에서 57개 경작농가를 선정하여 조사한 결과를 요약하면 다음과 같다. 1. 적심작업의 경우 황색종과 버어리종 모두 경작면적에 의한 노력소요량의 차이는 없었다. 2. 곁순제거작업은 다른 작업에 비해 노력소요량이 가장 많았고, 경작면적이 작을수록 노력소요량이 증가하였다. 3. 황색종과 버어리종 모두 침투성 곁순억제살포작업에 비해 접촉성 약제살포작업에서 노력소요량이 많았으나 경작면적이 큰 경우 접촉성 약제 살포작업 노력소요량 감소폭이 침투성 곁순억제제 살포작업에 대한 노력소요량 감소폭보다 컸다. 4. 각 작업에 대하여 농가간 최저 및 최고 노력소요량 차이가 큰 것으로 나타나 조사방법과 시기를 보완하여 보다 체계적이고 세밀한 조사가 추가적으로 이루어져야 할 필요가 있다.

안구의 비색소성 모양체 상피에서 발생한 유두상 선암종 -1예 보고-

최현주,최영진,이연수,이은정,강석진,김병기,심상인 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.12

유리섬유보강 폴리머 복합체 개발

신영수,연규석,최종윤 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

본 연구에서는 중심부를 MMA 개질 폴리머 모르타르로 하고 양표면부를 고인장, 고내구성인 GFRP (Glass Fiber Reinforced Plastics)로 보강하여 샌드위치를 제작하고, 이에 대한 단순 휨시험을 실시하여 GFRP 보강 MMA 개질 폴리머 모르타르 샌드위치패널의 단면결정시 필요한 설계 휨 모멘트의 산정을 위한 기초적인 자료로 제공코저 한다. 그 결과 중심부 MMA개질 폴리머 모르타르의 두께에 관계없이 압축 및 인장 GFRP 보강층 두께가 0에서 1.50∼2.76mm로 증가함에 따라 휨강도는 2.3∼5.6, 변형에너지는 40∼70배 보강효과를 나타내었다. 이것은 얇은 두께를 갖는 휨부재의 보강에 철근 또는 메쉬를 사용하는 것 보다 양표면부를 GFRP로 보강하는 것이 현저한 보강효과가 있음을 보여주는 결과이다. In this study, a MMA modified polymer mortar sandwich panels was developed : Core was made of the MMA polymer modified mortar, compressive strength of which was about 1020 kgf/㎠, and both facing were made of the glass fiber reinforced plastics (GFRP). The result showed that the strain energies increased 23-33 times as the thicknesses of facings increased from 1.50 to 2.76mm with fixing the core thickness to constants (30-50 mm). On the other hand, these values showed a tendency of decreases as the core thickness increases regardless of thickness of facings. A set of basic data for the structural analysis could be provided by investigating the correlations, within the scope of this research, between the resisting moment and the thicknesses of core and facing.

Dentacolor Resin System의 색안정성 및 물흡수도에 관한 연구

고영무,정재헌,최유석 大韓齒科器材學會 1995 대한치과재료학회지 Vol.22 No.2

The purpose of this study was to measure the color stability and water sorption of Dentacolor resin system at various time intervals over 6 week period. Ten, 20 x 1mm discs of the resin specimen were prepared according to ADA specification No.27 and cured with a photo-polymerization equipment(Dentacolor XS and Unilux AC). The color parameters of L*, a*, b* were measured with a computerized colorimeter(Hunter Associates Laboratory Inc., USA) in the transmittance mode. The total color change(ΔE) occurred during two different time periods was calculated using the following equation: ?? The amount of water sorption measurements was done in accordance with ADA specification No.27 for one week in distilled water at 37 ±1℃ and then stored extended up to 6 weeks. The obtained results were as follows : l. At first week, total color difference(ΔE) value of Dentacolor resin system was 1.430 ±0.664. 2. It was found that the range of total color difference(ΔE) of Dentacolor resin system was between 0.5∼1.430 for 6 weeks. 3, The amount of water sorption for one week was 0.30 ±0.119mg/cm²and it was lower than the 0.7mg/cm²/week for type Ⅱ composites in ADA specification No.27. 4. The amount of water sorption of Dentacolor resin system after 6 weeks was much more than its amount of water sorption of the first week, but it was not significant difference(p>0.05).

색소성 광선각화증에서 발생한 색소성 편평세포담종 - 1예 보고-

최현주,박경신,강석진,최영진,김병기,김선무,심상인 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.1

고어텍스를 이용한 비성형 5례

진홍률,양상권,최영석 충북대학교 의과대학 충북대학교 의학연구소 1999 忠北醫大學術誌 Vol.9 No.2

비성형수술에 삽입하는 사용물로는 자가연골이 가장 이상적이지만 필요한 만큼의 충분한 양을 얻기가 힘들고, 수술시간이 길어지며, 흡수가 일어날 수 있다는 단점이 있다. 이러한 단점을 극복할 수 있는 이종이식물 중에서 고어텍스는 최근에 개발되어 사용이 점차 증가하고 있는 추세이지만 아직까지 고어텍스의 임상적 효용성에 대한 보고는 드물다. 저자들은 고어텍스를 5명의 융비술 환자에서 사용하였는데 3명은 연골과 같이, 2명은 고어텍스 단독으로 사용하였다. 이 중 1명에서 감염이 발생하여 고어텍스를 제거하고 늑연골을 이용하여 융비술을 다시 시행하였고 나머지 4명은 모두 만족스러운 결과를 얻었다. 평균 20개월의 추적관찰에서 이식물의 이동이나 탈출, 피부의 손상 등의 큰 부작용이 없어 고어텍스가 비성형, 특히 융비술에 유용하다고 판단되어 관련문헌 고찰과 함께 보고하는 바이다. Though autogenous cartilage remains the ideal graft material in nasal surgery, situations exist where an alternative or an additional grafting material is needed. Gore-Tex is one of most recently developed alloplastic material and has been widely used for rhinoplasty. But there are few reports about the clinical efficacy of this material in rhinoplasty. The authors used Gore-Tex as a nasal implant in 5 cases of augmentation rhinoplasty. In three patients, the Gore-Tex was used with septal or conchal cartilages because the cartilages were not enough for the needed augmentation. In one patient, the implant was removed due to postoperative infection and subsequent augmentation was done with autogenous rib catilage after infection control. During average 20 months of follow-up, complications such as absorption, mobilization, or extrusion of the implant and thinning of the nasal skin were not found. All patients were satisfied with the surgical results. From these results, Gore-Tex can be considered as an effective material in augmentation rhinoplasty when autogenous material is not available or is not sufficient for the proper augmentation.

Purification of Acharan Sulfate Oligosaccharides by Size Exclusion Chromatography

Choi Hyung Seok,Kim Wan-Seok,Toida Toshihiko,Kim Yeong Shik 대한약학회 2004 大韓藥學會 總會 및 學術大會 Vol.2004 No.1

Discovery of Soil-borne Microbes Suppressing Type III Secretion System of Erwinia amylovora

Yeong Seok Kim,Eun Jae Lee,Jae Woo Han,Yong Ho Choi,Jung Sub Choi,Gyung Ja Choi,Hun Kim 한국농약과학회 2022 한국농약과학회 학술발표대회 논문집 Vol.2022 No.11

Effect of Chicory Fiber and Smoking on Quality Characteristics of Restructured Sausages

Choi, Hyun-Su,Choi, Hyung-Gyu,Choi, Yeong-Seok,Kim, Jong-Hee,Lee, Ju-Ho,Jung, Eun-Hee,Lee, Sang-Hwa,Choi, Yang-Il,Choi, Jung-Seok Korean Society for Food Science of Animal Resource 2016 한국축산식품학회지 Vol.36 No.1

This study was conducted to investigate the effects of chicory fiber for the replacement of fat and smoking on quality characteristics of restructured sausages. Treatments were as follows; Control: Pork backfat 20%, T1: Pork backfat 10% + Chicory fiber 10%, T2: Control + Smoking, T3: T1 + Smoking. The addition of chicory fiber significantly reduced the moisture, fat, hardness and pH values, whereas the smoking treatment increased the fat, redness and pH values of restructured sausages (p<0.01). Additionally, interaction of them significantly affected the ash, chewiness and hardness values of restructured sausages. As a result, although the addition of chicory fiber decreased the quality characteristics of sausage, smoking treatment improved the reduced quality. Therefore, the chicory fiber and smoking treatment is helpful to develop restructured sausage products with reduced fat and compensated quality.

Malignant Fibrous Histiocytoma of the Maxillary Sinus in a Spray Painter from an Automobile Repair Shop

Seok-Hwan Choi,Se-Yeong Kim,Man-Ki Son,Hui-Seok Yang,Sun-Woo Lee,Jung-Il Kim,Kap-Yeol Jung 대한직업환경의학회 2013 대한직업환경의학회지 Vol.25 No.-

Background: We report a case of a spray painter who developed malignant fibrous histiocytoma (MFH) of the maxillary sinus following long-term exposure to chromium, nickel, and formaldehyde, implying that these agents are probable causal agents of MFH. Case report: The patient developed right-sided prosopalgia that began twenty months ago. The symptom persisted despite medical treatment. After two months, he was diagnosed with MFH through imaging studies, surgery, and pathological microscopic findings at a university hospital in Seoul. His social, medical, and family history was unremarkable. The patient had worked for about 18 years at an automobile repair shop as a spray painter. During this period, he had been exposed to various occupational agents, such as hexavalent chromium, nickel, and formaldehyde, without appropriate personal protective equipment. He painted 6 days a week and worked for about 8 hours a day. Investigation of the patient’s work environment detected hexavalent chromium, chromate, nickel, and formaldehyde. Conclusions: The study revealed that the patient had been exposed to hexavalent chromium, formaldehyde, and nickel compounds through sanding and spray painting. The association between paranasal cancer and exposure to the aforementioned occupational human carcinogens has been established. We suggest, in this case, the possibility that the paint spraying acted as a causal agent for paranasal cancer.