http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
팽메이메이(Peng, Mei Mei),차왕석(Cha, Wang-Seog) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.10
methylethylketone(MEK)의 광분해 특성을 연속식 단일관형태의 광촉매반응기를 이용하여 연구하였다. 연속식 광촉매반응기에 적용된 주요 반응변수는 MEK의 초기농도, 광세기, 장기운전의 영향이었다. MEK의 주입농도가 증가 할수록 광분해 효율은 감소하였으며, 광분해 감소의 폭은 높은 유속에서 더욱 두드러졌다. 동일한 체류시간의 조건에 서 광반응기의 직경과 UV램프의 파장이 증가할수록 MEK제거효율은 감소하였다. 연속식 광촉매반응기를 120시간 연 속적으로 운전하여도 MEK 제거효율에서의 감소는 없었다. The degradation of methylethylkeone(MEK) was investigated by the continuous single module photocatalytic reactor. Operational conditions were initial concentration of MEK, intensity of photon flux, and activity change according to the long time operation. The photocatalytic degradation was decreased with the increase of MEK concentration, and the degree of decrease was larger at higher flow rate. Removal efficiency of photocatalytic reactor was decreased with the increase of reactor diameter and lamp wavelength under the same residence time condition. Continuous single module photocatalytic reactor was successfully operated without any activity drop during 120hrs operation.
Mani Ganesh(마니 가니쉬),Mei Mei Peng(팽메이메이),Aziz Abidov(아비도프 아지즈),Han Seok Oh(오한석),Min Cheol Shin(신민철),Won Geun Joo(주원근),Da Sol Shin(신다솔),Han Gyu Lee(이한규),Tae Jun Park(박태준),Hyun Tae Jang(장현태) 한국산학기술학회 2015 한국산학기술학회 학술대회 Vol.2015 No.1
This work is to develop once daily ace-clofenac controlled drug release formulations by the incorporation of aceclofenac cocrystals in alginate beads (modified release super-saturated drug delivery system). To achieve this goal, aceclofenac cocrystals were prepared using chitosan as a co-former. The synthesized materials were characterized by FT-IR, SEM and XRD technique. Enhancement of dissolution rate was assessed in simulated gastric fluid (pH 1.2). Enhanced oral bioavailability of aceclofenac has been achieved using chitosan cocrystals of aceclofenac and its entrapment into alginate matrix a super saturated drug delivery system (SDDS). Prepared SDDS were evaluated by various physiochemical and pharmacological methods. The result revealed that theprimary cocrystals enhanced the solubility of the drug and the thick gelled polymer matrix that formed from swelling of calcium alginate beads makes it to release the drug in continuous and sustained manner by supersaturated drug diffusion. The Cmax, Tmax and relative bioavailability for aceclofenac cocrystal and aceclofenac SDDS were 2.06 ± 0.42 µg/ml, 1 h, 159.72 ± 10.84 and 2.01 µg/ml, 1 h, 352.76 ± 12.91, respectively. Anti-inflammatory activity of aceclofenac was significantly improved with the SDDS. With respect to the results, it revealed that the SDDS described herein might be a promising tool for the oral sustained release of aceclofenac and likely for that of various other poorly soluble drugs.
한승동(Han, Seung-Dong),정의민(Jeong, Ui-Min),이주보(Lee, Joo-Bo),팽메이메이(Peng, Mei Mei),김대경(Kim, Dae-Kyung),장현태(Jang, Hyun-Tae) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.4
본 연구는 SBA-15, MCM-41, MCM-48, KIT-6와 같은 메조포러스실리카를 다양한 조건에서 합성하고 이를 이용하여CMK(Carbon Mesoporous Korea)를 합성한다. 합성된 CMK를 이용하여 메조포러스 구조의 전이금속체를 제 조하였다. 각각의 메조포러스실리카에 따라 합성된 CMK의 특성을 분석하고 이를 이용하여 합성된 메조포러스 전이 금속체의 특성을 질소흡탈착 등온선, SEM, 저각 X-선 회절분석으로 분석하므로써 최적의 메조포러스 전이금속체의 합성조건을 도출하였다, 실험 결과 가장 우수한 특성을 나타내는 메조실리카는 SBA-15이며, BET 분석으로 SBA-15로 부터 합성된 메조포러스 구리 분자체의 비표면적은 225m2/g, 기공크기는 2.91nm로 나타났다. In this study, syntheisis of mesoporous silica such as, SBA-15, MCM-41, MCM-48, KIT-6 according to various experimental conditions. The CMK(Carbon Mesoporous Korea) was synthsized by various mesoporous silica. Finally, the mesoporous transition metal structure synthesized using CMK structure. Nitrogen adsorption/ desorption, SEM, low angle X-ray diffraction were carried for analysis of each sample. The optimum synthesis condition of mesoporous transition metal structure derived from characteristic analysis. The SBA-15 is best precursor for synthesis of mesoporous transition metal structure. The surface area of copper mesorporous structrue from CMK(SBA-15) is 225m2/g, pore diameter is 2.91nm by BET analysis.
Cadiam Mohan Babu(칸디암 모한 바부),Rajangam Vinodh(라자감 비노드),Aziz Abidov(아비도프 아지즈),Mei Mei Peng(팽메이메이),Muthiahpillai Palanichamy(무따이 팔라리차미),WangSeogCha(차왕석),Hyun-Tae Jang(장현태) 한국산학기술학회 2015 한국산학기술학회 학술대회 Vol.2015 No.1
Mesoporous Fe2O₃/TiO₂ was synthesized by sol-gel route using pluronic P123 the as structure directing agent. The mesoporous nature of the material was confirmed from low angle X-ray diffraction. The material was supported on reduced graphene oxide and characterized by FT-IR, Raman, XPS, N2 sorption, HR-TEM and SEM. The reduced graphene oxide supported Fe2O₃/TiO₂ nanocomposite was tested for the sorption of both As(V) and As(III) from aqueous solution. The equilibrium adsorption attained within fifteen minutes for both As(III) and As(V). The maximum adsorption capacity for As(V) and As(III) was found to be 99.5 and 77.7 mg/g at pH 6 and 7 respectively. The sorption was found to high in the pH range of 6-7.