排序方式: 共有5条查询结果,搜索用时 0 毫秒
1
1.
2.
Wanqiu Ma Benxue Jiang Xiqi Feng Xin Huang Wei Wang Krittiya Sreebunpeng Long Zhang 《Journal of the American Ceramic Society》2021,104(2):966-973
“Defect engineering” was a valid strategy to modify the performance of LuAG:Ce scintillator, usually realized by Me2+/Me+ co-doping. To investigate the effects of Ca2+ co-doping on the scintillation properties of LuAG:Ce, a set of LuAG:Ce ceramics with Ca2+ concentrations ranging from 0 to 0.5 at.% were manufactured. The absorption spectra, radioluminescence spectra (RL spectra), light yield, RL spectra as a function of temperature, decay time, and TSL curves of the ceramic products were carefully measured. With Ca2+ co-doping, the scintillation performance of LuAG:Ce ceramics was greatly improved. Especially for the 0.2 at.% Ca2+ co-doped one, it has a high light yield value of 24, 400 ph/MeV, a fast scintillation decay time of 48 ns, and a small slow component contamination. And the role of Ca2+ in the scintillation mechanism of LuAG:Ce ceramics was also discussed in this paper. 相似文献
3.
4.
Raveeporn Jirayucharoensak Krittiya Khuenpet Sarote Sirisansaneeyakul 《Drying Technology》2019,37(10):1215-1227
In this study, inulin was extracted from Jerusalem artichoke tuber (JAT) powder and then concentrated before spray drying. The aims of this study were to (1) determine the drying condition that provided high powder yield together with superior qualities of JAT inulin powder and (2) investigate the chemical and physical properties of inulin powder. The inulin extracts at different concentrations of 10, 20, and 30 °Brix were spray-dried and then compared. The spray drying experiments were conducted at the inlet/outlet air temperatures of 150/90, 170/90, and 190/90?°C for the chosen concentration of inulin extract. It appeared that spray drying of the 30 °Brix extract at the inlet/outlet drying air temperatures of 190/90?°C resulted in the highest value of powder recovery, bulk density, water solubility and the lowest moisture content and hygroscopicity in comparison with its counterparts. SEM micrographs showed that the powder produced by this condition was more stable and less sticky than others. The sugars, total fructo-oligosaccharides (1-kestose, nystose, and 1F-β-fructofuranosyl nystose) and inulin-type fructans contents of powder were 12.88, 11.12, and 64.36?g/100?g of powder, respectively. The moisture sorption data and models developed in this work could be used for determining the suitable condition of surrounding air for inulin powder storage. 相似文献
5.
Tongsai JAMNONGKAN ;Krittiya KANTAROT ;Kitiya NIEMTANG ;P. Pungboon PANSILA ;Amnuay WATTANAKORNSIRI 《中国有色金属学会会刊》2014,24(10):3386-3393
研究聚乙烯醇水凝胶对废水中铜的吸附能力。分别使用红外光谱分析和吸水量测定方法研究水凝胶的化学结构和吸收行为。结果表明,聚乙烯醇与戊二醛交联形成聚乙烯醇水凝胶,凝胶因它的亲水性而表现出高的平衡溶胀比。另外,凝胶的吸附过程服从准二级动力学,扩散受粒子间扩散和膜扩散控制。 相似文献
1