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장석훈,김성복,이봉덕,이수기 충남대학교 농업과학연구소 2008 농업과학연구 Vol.35 No.2
This experiment was conducted to investigate the feed value of Phellinus linteus meal. The chemical composition and particle size of Phellinus linteus meal was determined, and investigated the effect of partial substitution(0, 5, 10 and 20%) of dried Phellinus linteus meal on metabolizability and serum IgG concentration of layers. Crude fiber content of Phellinus linteus meal was higher, and crude protein and crude fat contents were similar level compare to corn, barley, and wheat. Dry matter metabolizability of Phellinus linteus meal was lower in 10 and 20% treatment than those of 0 and 5% treatment significantly(p<0.05). But, Phellinus linteus meal did not affect concentration of serum IgG. 본 시험은 상황버섯박의 사료가치를 조사하기 위하여 화학적 성분을 분석하고, 산란계를 이용하여 급여수준(급여사료의 0, 5, 10 및 20%)에 따른 대사율과 혈청 IgG 농도를 조사하였다. 영양적 조성에 있어서는 섬유질성 단미사료수준 이상의 영양소를 함유하고 있으며, 산란계에 대한 대사율은 대조구에 비하여 상황버섯박 10 및 20% 첨가구가 유의하게 낮은 결과를 보였다(p<0.05). 그리고 혈청 IgG 농도에 있어서는 첨가수준에 따른 유의적인 차이를 발견할 수없었다. 위 결과로 볼 때 상황버섯박은 섬유질 함량이 높아 단위 동물의 사료로는 제한적 사용이 불가피하며, 버섯의 약리성분은 추출잔류물이라는 특성으로 볼 때 그 작용을 기대하기는 어려울 것으로 판단된다. 또한 상황버섯박은 섬유질 함량이 높은 것으로 보아 단위 동물보다는 반추동물의 사료로 이용하는 것이 유리할 것으로 생각된다.
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장성호,이덕생,김수생 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.2
In this research, the optimum LFG pilot plant of extraction, purification, and application are selected by economic analysis, constructed and operated for the development of the standard LFG utilizing process process proper to domestic landfill. LFG recovery pilot plant was constructed at the base of the result of optimized design and economic evaluation performed at S,D landfill(landfil1 area : 514,345m², landfill depth : 23-39m, landfill MSW amount : 12,808,317m³, landfill period : 87.6-93.5) in Pusan. It was consisted of four extraction well(two extraction well with 18.5m depth, two extraction well with 10m depth), collection head with 160m length, scrubber with capacity 14m³/min as purification process, and flare stack as burning facilities. And monitoring well was set at 30, 50, 70, 90m far from extraction well for the estimation of influence radius. The following experiments were performed using the predeveloped LFG reconvery pilot plant. First, LFG generation amount and generation rate were estemated from the atom analysis of municipal solid waster in S,D landfill. Second, real LFG extraction rate of some 0-10㎥/min was obtanied from operating of LFG recovery process. Third, influence radius was estimated 85-100m according to varying 407㎥/min extraction rate. Fourth, composition of LFG was detected in extraction well and the before and after of purification process.
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설수덕,왕석주,장성호 동아대학교 환경문제연구소 1994 硏究報告 Vol.17 No.2
The thermal decomposition of the sludge with Poly(acryloniti1e-butadiene-styrene) and Poly(styrene-co-acrylonitrile) were using a thermal analysis techniques in the stream of nitrogen gas of 30ml/min at various heating rates from 4 to 20℃/min. The mathematical, Derivative and Integral method were used to obtained values of activation energy of decomposition reaction. 1. The values of activation energy evaluated by Derivative and Intergral method were consistent with each other very well. 2. The maximum value of heat of decomposition evaluated by DSC method were 10, 120 cal/g at weight ratio of sludge/ABS=20/80 and 10, 500cal/g at weight ratio of sludge/SAN = 20/80. 3. The thermogravimetric trace curve agreed with the theoretical equation.
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포항산 천연 제올라이트와 합성 제올라이트에 의한 금속 이온의 제거
박상윤,장세복,김덕수,김양 濟州大學校 基礎科學硏究所 1996 基礎科學硏究 Vol.9 No.2
국내 경상북도 포항시 남구에서 채취한 4종의 천연 제올라이트를 화학성분 분석, X-선 회절, 열시차분석 실험, 열중량분석 실험으로 분석하였다. 이들 제올라이트의 주성분은 석영, mordenite, heulandite가 함유된 clinoptilolite이었다. NaOH, Ca(OH)₂, HCI 용액으로 처리한 천연 제올라이트의 성질은 X-선 회절법과 열시차분석 실험법으로 연구하였다. 천연 제올라이트와 화학적으로 처리한 제올라이트, 합성 제올라이트를 이용하여 Cu²+, Cd²+, Hg²+, Pb²+, Cr6+등의 중금속 이온과 알칼리 금속 K- 이온의 제거능력을 비교하였고, 중금속 이온 용액의 pH값과 초기농도, 중금속 이온을 제거하는데 소요되는 반응 시간의 효과 등을 비교하였다. 천연 제올라이트에 Ca²+, Pb²+, and Cu²+ 이온용액을 각각 5ppm첨가한 결과 제거율이 94%, 95%, 97%까지 증가되었다. 또한 0.5N NaOH와 0.5 N HCI 용액으로 처리한 매석산 천연 제올라이트를 이용하여 Hg²+ 이온용액을 5ppm 첨가한 결과 제거율이 약 80% 정도였다. 매석산 천연 제올라이트와 합성 제올라이트 A,X 및 Y가 Hg²+ 이온의 최대 제거율을 나타내었다. The four natural zeolites collected in Pohang, Kyungsang buk-do, Korea, were analyzed by means of wet chemical methods, X-ray diffraction, DTA, and TGA. The results indicate that the primary species of those zeolites are clinoptilolite mixed with quartz, mordenite, and heulandite. These zeolites were treated with NaOH, Ca(OH)₂, and HCI solution and their differences were also studied by X-ray diffraction method and differential thermal analysis method. The capabilities of removing heavy metal ions, such as Cu²+, Cd²+, Hg²+, Pb²+ and Cr6+, and alkaline ion, K+ ions with original zeolites, chemically treated zeolites, and synthetic zeolites were compared. The effect of pH value of solution and initial concentration of heavy metal ions, and the effect of reaction time in removing heavy metal ions were ions were studied. The experimental results showed that up to 94%, 95%, and 97% of Ca²+, Pb²+, and Cu²+ ions could be removed, respectively, out of 5 ppm of untreated natural zeolites. About 80% of the Hg²+ ions could be also removed out of 5 ppm Hg²+ ions solution with Maesuk mt. natural zeolite which was treated with 0.5N NaOH and 0.5 N HCI solution. It was found that Maesuk mt. natrual zeolite was most efficient in removing Hg²+ ions compared with the other natural zeolites studied in this work and synthetic zeolite A, X and Y.
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저압 플라즈마를 이용한 피혁의 환경 친화적인 접착 표면 처리
하선희,장유진,설수덕 東亞大學校 環境問題硏究所 2005 硏究報告 Vol.27 No.1
The plasma generally, ionized gas state, is the 4th state composed the universe. Generating the plasma artificially has been studied by spending energy and it has a lot of applications in human's life. There are several merits to modify the surface of polymer using plasma. Above all, plasma maintains the property of polymer because of it changes the property of surface only. Also, it doesn't use any organic solvents and it is the environment friendly process because of there are no waste under processing. Furthemore, in case of high-pressure plasma, it is possible that automated-processing continuously. In this study, we tried the reforming of surface to rise the adhesive strength between the material of polymer, experimented the rising of adhesive strength through a experiment of peel strenght by virtue of processing time and using gas, confirmed the change of polymer's surface through measuring the surface contact angle analyzer and scanning electron microscopy(SEM).
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Fluoroquinolone 항생제에 교차반응을 보인 ofloxacin에 의한 아나필락시양 반응 1례
김철우,김덕영,류성태,김상용,장창수 대한천식 및 알레르기학회 2004 천식 및 알레르기 Vol.24 No.1
Fluoroquinolones are antimicrobial agents that have a broad range of activity against both gram-negative and gram-positive organisms. Anaphylactoid reactions have been sporadically reported with fluoroquinolones. There have been a few reports that describes cross-reactivity between fluoroquinolones. We experienced case of ofloxacin-induced anaphylactoid reaction, and confirmed cross-reactivity between ofloxacin and ciprofloxacin with the oral challenges test. Cross-reactivity between fluoroquinolones may be important, and avoidance of any fluoroquinolones should be mandatocy for patients with hypersensitivity reaction to one of these drugs. (J Asthma Allergy Clin Immunol 24 : 146-51, 2004)
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김주봉,설수덕,장상목 동아대학교 공과대학 부설 한국자원개발연구소 1985 硏究報告 Vol.9 No.2
This study has been carried out to determine the hydrodynamic characteristics and mass transfer coefficient of NaOH solution in the three-phase fluidized bed. The effects of the superficial gas velocity, superficial liquid velocity, and the material of particles on the minimum fluidized velocity, phase holdup, volumetric liquid phase mass transfer coefficient and interfacial area were investigated The results were as follows, 1. The minimum fluidized velocity decreased with the superficial gas velocity. 2. The solid hold-up decreased with the superficial liquid velocity and gas velocity 3. The volumetric liquid phase mass transfer coefficient and interfacial area was increased with the superficial gas velocity, while was not effected by the superficial liquid velocity
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