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최형석,전법규,김남식,정진환 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-
건물에 작용하는 진동하중은 구조물 자체의 성능에 영향을 미칠 뿐만 아니라 거주하는 사람이나 작업기계 동에 나쁜 영향을 가져올 수 있다. 본 연구에서는 이러한 진동에 대한 영향을 평가하는 국내외의 기준에 대하여 고찰하고 다양한 하중과 주파수 대역에서 실험이 가능한 대형지진모사 실험센터에 대한 진동영향 평가를 수행하여 사용성 저하 여부를 확인하였다.
강태형,이환호 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.2
Epidermoid cyst is slowly growing, round and firm tumor. Generally it grows up to 0.5 to 5 cm in diameter. Epidermoid cyst is rarely found in postauricular region. The cyst is intradermal or subcutaneous sac-like structure that is surrounded by keratinized epithelium with no dermal annexe in its covering epithelium. In surgical treatment, the cyst wall must be completely removed because residual portions of it can result in cyst recurrence. We report a case in which a 41-year-old man developed an epidermoid cyst presenting as a large postauricular swelling with a review of literature.
국내산 및 제초제 내성 콩(HS2906)의 일반성분, 무기질 및 지방산 조성
양윤형,이정희,김형진,윤원기,김환묵,김미리 동아시아식생활학회 2005 동아시아식생활학회지 Vol.15 No.1
Proximate analysis, mineral and fatty acid composition of three conventional domestic soybean cultivars and two imported ones including glyphosate-tolerant HS2906 were evaluated by AOAC method, ICP-AES and gas chromatography. There were several differences in the proximate analysis among three conventional domestic soybean cultivars ; higher crude fat in the cultivar Hwanggumkong, higher crude protein in Pungsankong, and higher carbohydrate and crude ash in Duyukong. The ranges of contents of proximate components of domestic cultivars were similar to the data previously reported. There were no significant differences in proximate analysis between conventional soybean WS82 and glyphosate-tolerant HS2906 ; 23.55~23.90% of crudefat, 34.22~35.55% of crude protein, 6.25~6.45% of crude ash, and 25.35~26.47% of carbohydrate. The mineral and fatty acid compositions of HS2906 were similar to those of conventional soybeans previously reported.
가교된 공중합 폴리이미드막에 의한 벤젠/싸이클로헥산 혼합액의 분리
김종환,이형록,김진환 한국공업화학회 2003 응용화학 Vol.7 No.1
Crosslinked copolyimide membranes containing both sulfony1 group(-SO_2) andtrifluoromethy1 group(-CF_3) which have high affinity for benzene, were prepared andthe pervaporation properties of these membranes were investigated for the separationof benzene/cyclohexane mixtures. Crosslinked copolyimide membranes were obtainedby a polycondensation of 6FDA with DDBT and DABA and a crosslinking withethylene glycol. Sorption and pervaporation experiments were performed at 323K,333K and 351K It has been found that all the crosslinked copolyimide membranes show high separation performances and good chemical and thermal stability.
디지틀 이동통신용 동기추적 시스템의 의사잡음 부호 발생기 설계
박형근,김환용 圓光大學校大學院 1996 論文集 Vol.17 No.-
The study on the implementation of signal processing ASIC is advanced m the parts of the DS/CDMA using the direct sequence method which is better than any other type in the encryption aspect. Therefore, in this thesis, Pseudo Noise Code Generator suitable for the encryption aspect. Therefore, in this thesis, Pseudo Noise Code Generator of Code Tracking Sysytem for Digital Mobile Communication suitable for the DS/CDMA method including the additional characteristics for the spread spectrum signal processing technique, encryption technique which is protect to privacy between users, the decrease effects of the self-interference and transmission power spectral density, is designed to get the improved effects for the conventional (exciting) channel noise by using the Verilog-HDL.
茂朱 南大川 上流水系 汚染이 本流의 水質에 미치는 影響에 關한 硏究
金煥基,崔頭炯,韓雄在 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1
This study was investigated for the pollution load of water quality in the basin of Wondangchon. Total pollution load was measured that BOD was 683.6 ㎏/day, SS was 1,436.184 ㎏/day, T-N was 237.244 ㎏/day, and T-P was 62.078 ㎏/day respectively inthere. Furthermore, it was estimated that BOD is 1,056.863 ㎏/day, SS is 1,840.657 ㎏/day, T-N is 299,922 ㎏/day, and T-P is 74.154 ㎏/day respectively in 2006 year. In case of BOD loading, that by population accounted for 63% of all BOD loading of that, 57% was discharged in M-4 drainage area. However, since tourists have been increasing gradually, that by population was estimated to be analogous to that by tourists in 2006 year. In case of SS loading, that by livestock was bigger than that by population by holding for 49% of all SS loading, and that by tourists was 9.8% now, however, ratio of that by tourists was estimated to be increased up to 25.8% in 2006 year. In case of T-N loading, that from wastewater treatment plant located in M-1 drainage area was the biggest by accounting for 56.2%. In case of T-P loading, that by livestock discharged form M-4 drainage area accounted for 44.3% of all T-P loading, and ratio of both of that by tourists and that from wastewater treatment plant gradually was estimated to be increased From above results, showing yearly change in pollution load of each water quality items is estimated to be increased continuously in every items, and in the influence of the pollution load of each drainage area upon Muju Namdaechon, M-4 drainage area was the biggest by accounting for 45% of total pollution load, and nest was ordered to M-1, M-2, M-3 and polltion load from wastewater treatment plant. The water quality of Namdaechon in Muju influenced by the study area was in the result of BOD 17.7%, SS 13.0%, T-N 28.2% and T-P 22.9%.
이형록,이광석,김진환 한국공업화학회 2003 응용화학 Vol.7 No.1
Polyaniline(PAN)/Polyimide(PI) blended membernes were prepared and the effect of mixing ration of PANI and PI on the stuctural properties and the gas transportproerties was studied. The polyamic acid(PAA) solution was prepared from 6FDAand ODA in NMP solvent. The PANI/PI blended membranes were obtained bymixing PAA solution and PANI solution. The gas permeation experiments with H_2,He, O_2,N_2,CO_2, and CH_4 were carried out by variable pressure method at 30℃ and5atm. For all gases tested, the permeability coefficient of OANI/PI blended membranes was higher relative to that of polyamiline and the separation factors for the blended were comparable to polyaniline.