4篇
您的检索式：作者名="Heming Tian"
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| 1 | Anomaly and geochemistry of rare earth elements and yttrium in the late Permian coal from the Moxinpo mine,Chongqing,southwestern China显示文摘The rare earth elements and yttrium(REY)of the K2 coal from the Moxinpo mine,Chongqing,were determined using inductively coupled plasma mass spectrometry(ICP-MS).The results show that REY are enriched in the K2 coal,with the average content up to 462 lg/g,much higher than average values of most coals in the world.The REY distribution patterns indicate that the light REY is enriched and show a well-pronounced Eu minimum.The fractionation of individual light-REY is higher than that of the heavy-REY.The REY distribution through the K2 coal seam shows that the top and bottom portion of the coal seam have a lower content of REY than the middle portion.Goyazite and rhabdophane were identified with a scanning electron microscope equipped with an energy-dispersed X-ray spectrometer(SEM-EDX).The REY distributions through the coal seam,SEM-EDX data and the correlation analysis between ash yields and the concentrations have revealed that the REY mainly occurs in the organic matter.The K2 coal is a potential rare-metal resource due to its high REY contents,and the coal ash could be regarded as a new and promising raw material for recovery of REY as a by-product. | Jianhua Zou Dong Liu Heming Tian Tian Li Feng Liu Lin Tan | 2014 | International Journal of Coal Science & Technology2014，1，1： | 7 |
| 2 | Revisiting the late Permian coal from the Huayinshang, Sichuan, southwestern China: Enrichment and occurrence modes of minerals and trace elements显示文摘 | Shifeng Dai Yangbing Luo Vladimir V. Seredin Colin R. Ward James C. Hower Lei Zhao Shande Liu Cunliang Zhao Heming Tian Jianhua Zou | 2013 | International Journal of Coal Geology2013，，： | 3 |
| 3 | Fabrication of carvedilol nanosuspensions through the anti-solvent precipitation-ultrasonication method for the improvement of dissolution rate and oral bioavailability显示文摘 | Dandan Liu Heming Xu Baocheng Tian Kun | 2012 | AAPS Pharm Sci Tech2012，13，1： | 1 |
| 4 | Two-photon 3D printed spring-based Fabry-Pérot cavity resonator for acoustic wave detection and imaging显示文摘Optical fiber microresonators have attracted considerable interest for acoustic detection because of their compact size and high optical quality.Here,we have proposed,designed,and fabricated a spring-based Fabry-Pérot cavity microresonator for highly sensitive acoustic detection.We observed two resonator vibration modes:one relating to the spring vibration state and the other determined by the point-clamped circular plate vibration mode.We found that the vibration modes can be coupled and optimized by changing the structure size.The proposed resonator is directly 3D printed on an optical fiber tip through two-photon polymerization and is used for acoustic detection and imaging.The experiments show that the device exhibits a high sensitivity and low noise equivalent acoustic signal level of 2.39 mPa∕Hz^(1∕2)at 75 kHz that can detect weak acoustic waves,which can be used for underwater object imaging.The results demonstrate that the proposed work has great potential in acoustic detection and biomedical imaging applications. | HEMING WEI ZHANGLI WU KEXUAN SUN HAIYAN ZHANG CHEN WANG KEMIN WANG TIAN YANG FUFEI PANG XIAOBEI ZHANG TINGYUN WANG SRIDHAR KRISHNASWAMY | 2023 | Photonics Research2023，11，5： | 0 |
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