http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Chongyang Yang (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Xun-an Ning,Chongyang Yang,Yujie Wang,Zuoyi Yang,Jingyu Wang,Ruijing Li 한국생물공학회 2014 Biotechnology and Bioprocess Engineering Vol.19 No.4
A strict aerobic Acinetobacter baumanniiYNWH 226, isolated from an activated sludge reactortreating textile wastewater, was able to grow on Congo redas the sole carbon source under aerobic conditions. Thedecolorization and TOC reduction efficiency were 99.1 and93.72%, respectively. The effects of the Congo redconcentration were studied. The environmental factors (i.e.,pH, temperature and agitation speed) on the biodegradationof Congo red in aqueous phase were studied and evaluatedusing response surface methodology. The results indicatedthat when the Congo red concentration was 100 mg/L, theoptimal decolorization conditions were as follows: 37°C,pH 7.0 and 180 rpm. The single A. baumannii YNWH 226was able to form aromatic amines by reductive breakage ofthe azo bond and then oxidize them into non-toxicmetabolites.
-
Preparation of Monodisperse Colloidal ZnO Nanoparticles and Their Optical Properties
Chong Yang,Limei Tang,Qingsong Li,Ailing Bai,Yanqiu Wang,Yingmin Yu 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.5
Monodisperse colloidal zinc oxide (ZnO) nanospheres with a narrow size distribution were synthesized via a developed two-stage solution method. We controlled the size of the as-synthesized ZnO nanoparticles by varying the amount of ZnO/ethanol suspension added. Dynamic light scattering (DLS) and transmission electron microscopy (TEM) revealed that the diameter of the as-synthesized ZnO nanoparticles was in the range of 60 – 140 nm with a polydispersity index less than 5%. On high-resolution TEM images, we clearly observed that the ZnO nanospheres were actually composed of tiny ZnO subunits, several nanometers in size. Powder X-ray diffraction and TEM-selected area electron diffraction analysis showed that the spheres consisted of polycrystalline nanoparticles. The size of the subunits, which was confirmed by ultraviolet (UV)-visible spectroscopy, increased as the amount of ZnO/ethanol suspension added was decreased. A UV emission at about 374 nm was observed, and this emission of ZnO nanoparticles is found to depend on particle size due to the confinement effect. A red emission at about 651 nm, which has been reported for undoped ZnO, appeared due to the excess oxygen on the particles from O – H or C=O groups. The intensity of the red emission increased as the relative oxygen content increased. The formation mechanism of such ZnO nanospheres was also considered.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
