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| 1 | Environmental indicators from comparison of sporopollen in early Pleistocene lacustrine sediments from different climatic zones显示文摘Two lacustrine sporopollen records obtained from the Qaidam Basin (in the non-monsoonal region) and the Linxia Basin (in the monsoonal transition zone) indicate that during the early Pleistocene open forest-steppe/steppe vegetation developed in the Qaidam Basin, while in the Linxia Basin an open cypress forest-steppe shifted to a conifer/conifer-steppe and then to open forest-steppe vegetation. Existing sporopollen records from the Chinese Loess Plateau (CLP) (in the monsoonal region) indicate that around the Sanmen Paleolake open forest-steppe shifted to pine/conifer-broadleaved mixed forest. The conifer cover then changed to a subtropical evergreen broadleaved forest distributed around the Nihewan Paleolake. These changes suggest that wetter conditions progressed from western China to the east, and the climate became more humid than that of today indicating a stronger Asian summer monsoon during the early Pleistocene. | WU FuLi FANG XiaoMin MIAO YunFa DONG Ming | 2010 | Chinese Science Bulletin2010，55，26： | 3 |
| 2 | Filter paper-templated preparation of ZnO thin films and examination of their gas-sensing properties显示文摘ZnO thin films prepared by using quantitative filter paper as a template and Zn(CH3CO2) 2·2H2O ethanol precursor solution were characterized by scanning electron microscopy(SEM) and X-ray diffraction(XRD) . The effects of sample calcination temperature,precursor concentration and filter paper types were studied,and the growth process was investigated by infra-red(IR) spectroscopy and thermogravimetric analysis/differential thermal analysis(TGA/DTA) . The results show that samples soaked in a 1.5 mol/L Zn(CH3CO2) 2·2H2O ethanol solution and calcined at 600 °C yield ZnO films of uniform particle size,approx-imately 30,40 and 50 nm,for fast-,medium-and slow-speed filter papers,respectively. The formaldehyde gas sensing properties of the ZnO nanoparticles were tested,showing that the material prepared from fast-speed filter paper has a higher response to 120-205 ppm formaldehyde at 400 °C than that prepared from medium-or slow-speed paper,which depends on the particle size. | Bao Wang Ning Han Dong Meng Renliang Yue Jinghui Yan Yunfa Chen | 2011 | Particuology2011，9，3： | 2 |
| 3 | Superparamagnetic Iron Oxide is Suitable to Label Tendon Stem Cells and Track Them In Vivo with MR Imaging显示文摘 | Yunfa Yang Jianying Zhang Yongxian Qian Shiwu Dong He Huang Fernando E. Boada Freddie H. Fu James H-C. Wang | 2013 | Annals of Biomedical Engineering2013，，10： | 1 |
| 4 | Relationships between modern pollen and vegetation and climate on the eastern Tibetan Plateau显示文摘The Tibetan Plateau ecosystem is fragile and sensitive to climate change. Understanding the relationships between modern pollen and the vegetation and climate of the region is critical for the evaluation of ecological processes.Here, we explore modern pollen assemblages of typical land-cover types at a large spatial scale by analyzing 36surface samples from the southeastern Tibetan Plateau, supplemented by typical desert, desert-steppe, and steppe meadow transition data selected from the Chinese Surface Pollen Database, giving a total of 75 samples. We used redundancy analysis(RDA) to explore the responses of vegetation in the assemblages to regional climate. Our results show that pollen assemblages generally reflect the vegetation composition: assemblages from alpine meadow samples are dominated by Cyperaceae, Asteraceae, Rosaceae, and Polygonaceae;alpine shrublands mainly comprise Fabaceae, Rosaceae, Ericaceae, and Quercus(Q. spinosa);and coniferous forest surface samples mainly comprise Picea, Abies, Pinus, and Betulaceae. Our RDA shows that mean annual precipitation(MAP) is the main meteorological factor affecting the pollen assemblage and vegetation type;MAP positively correlates with percentages of Cyperaceae, Poaceae, Rosaceae, and Asteraceae, and negatively correlates with percentages of Chenopodiaceae, Ephedraceae, Nitraria, and Tamaricaceae. The ratio of Artemisia to Chenopodiaceae is a useful indicator to distinguish temperate desert from other land-cover types on the Tibetan Plateau, while the ratio of Cyperaceae + Asteraceae to Artemisia + Chenopodiaceae can be used to distinguish arid desert from other landcover types, and may provide a useful altitude index for the eastern Tibetan Plateau. | Lin Lin YunFa Miao YongTao Zhao Dong Yang Gen Wang | 2023 | Research in Cold and Arid Regions2023，15，2： | 0 |
| 5 | Talcum-doped composite separator with superior wettability and heatproof properties for high-rate lithium metal batteries显示文摘Separator is supposed to own outstanding thermal stability,superior wettability and electrolyte uptake,which is essential for developing high-rate and safe lithium metal batteries(LMBs).However,commercial polyolefin separators possess poor wettability and limited electrolyte uptake.For addressing this issue,we put forward a composite separator to implement above functions by doping layered-silicate(talcum)into polyvinylidene fluoride(PVDF).With significant improvement of electrolyte absorption benefiting from the strong adsorption energy values(-1.64-1.70 eV)between talcum and the electrolyte in lithium metal batteries,PVDF/Talcum(PVDF/TM)composite separator owns a small contact angle and superior electrolyte uptake.PVDF/TM composite separator with 10 wt%talcum(T-10)owns a tiny contact angle of 8°,while those of polypropylene(PP)and PVDF are 48°and 20°with commercial electrolyte.Moreover,the addition of thermotolerant talcum endows the T-10 composite separator with great thermostability,whose thermal shrinkage is only 5.39%at 150°C for 0.5 h.The cell with LiFeO4cathode and the T-10 composite separator reaches 91.7 m Ah/g in discharge capacity at 4.8 m A/cm^(2)(10 C),far superior to that with pure PVDF separator(56.3 m Ah/g)and PP(51.4 m Ah/g). | Mengqiu Yang Yuanpeng Ji Yunfa Dong Botao Yuan Liwei Dong Yuanpeng Liu Sue Hao Chunhui Yang Xiaoqiang Wu Qingquan Kong Jiecai Han Weidong He | 2023 | Chinese Chemical Letters2023，34，1： | 0 |
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