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| 1 | Numerical simulation on directional solidification of Al-Ni-Co alloy based on FEM显示文摘The ratio,of the temperature gradient at the solidifiationfront to the solidification rate of solid-liquid interface,plays a large part in columnar grain growth.The transient temperature fields of directional solidification of Al-Ni-Co alloy were studied by employing a finite element method.The temperature gradient at the solidification front and the solidification rate were analyzed for molten steels pouring at different temperatures.The results show that with different initial pouring temperatures,the individual ratio of the temperature gradient at solidification front to the solidification rate soars up in the initial stage of solidification,then varies within 2,000-6,000℃.s.cm-2,and finally goes down rapidly and even tend to be closed to each other when the solidification thickness reaches 5-6 cm.The simulation result is consistent with the practical production which can provide an available reference for process optimization of directional solidified Al-Ni-Co alloy. | Yang Zhili Chen Dengming Tian Shilong, Liao Daohan Yang Yu | 2010 | China Foundry2010，7，1： | 1 |
| 2 | The relationship between gold mineralization, exhumation of metamorphic core complex and magma cooling: Formation of the Anjiayingzi Au deposit, northern North China Craton显示文摘 | Lebing Fu Junhao Wei Huayong Chen Leon Bagas Jun Tan Huan Li Daohan Zhang Ning Tian | 2014 | Ore Geology Reviews2014，，： | 1 |
| 3 | Fragments of Comet Hyakutake (C/1996 B2)显示文摘Several fragments of Comet Hyakutake were observed in March and April of 1996. This leads to the impression that the splitting of Comet Hyakutake on a small scale occurred frequently. Data analysis points to a rotation period of about 6 2 h if the fragments of April 11 are the condensations within a jet. | Daohan Chen Aidi Zhao Qindi Wu Yi Song Yixin Fan Shousheng Sun Yan Zhang Linan Sun | 1998 | Chinese Science Bulletin1998，43，2： | 0 |
| 4 | THE SPLITTING OF COMET HALLEY显示文摘In combination with the authors previous obsewation about the splitting of Comet Halley in March 1986, the events involving the sharp, straight feature in the antisolar direction observed in the head of Comet Halley in 1910 (such as those occurring on May 14, 25 and 31, and June 2) are rediscussed The analysis leads to the following scenario: When Comet Halley explodes and splits, a fragment jettisoned or thrown off from the nucleus will, after moving in the direction of its tail, develop into a mini-comet. Although not well developed or permanent, it has its own plasma tail and, sometimes, a dust tail. If Bobrovnikoff’s definition of a secondary nucleus is assumed, then the fragment should be considered as a real secondary nucleus. It seems that the current idea of a tailward jet suggested by Sekanina and Larson is a wrong explanation for the plasma tail of a mini-comet and hence the rotation period of 52-53h for Comet Halley is | Chen Daohan 1 Liu Linzhong 1 Alan Gilmore 2 (1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008) (2. Mount John Observatory, New Zealand) | 2000 | 中国科学院上海天文台年刊2000，，S1： | 0 |
| 5 | FRAGMENTS OF COMET HYAKUTAKE (C/1996 B2)显示文摘Several fragments of Comet Hyakutake were observed in March and April of 1996. This leads to the impression that the splitting of Comet Hyakutake on a small scale occurred frequently. Data analysis points to a rotation period of about 6.2h if the fragments of April 11 are the condensations within a jet. | Chen Daohan 1 Zhao Aidi 1 Wu Oindi 1 Song Yi 1 Fan Yixin 1 Sun Shousheng 2 Zhang Yan 2 Sun Linan 2 (1. Purple Mountain Observatory, Chinese Acadeniy of Sciences, Nanjing 210008) (2. Qingdao Station of Purple Mountain Observatory, Qingdao | 2000 | 中国科学院上海天文台年刊2000，，S1： | 0 |
| 6 | Characteristic chemical profile of Juhe Fang extract with lipid-lowering properties显示文摘Objective:The objective of this study was to verify the lipid-lowering effect of Juhe Fang extract(JHFE)and to determine its characteristic chemical profile in vitro and in vivo.Methods:A hyperlipidemia model was established by feeding mice a high-fat diet(HFD).After treatment for 30 days,serum total cholesterol(TC),triglyceride(TG),high-density lipoprotein cholesterol(HDL-C)and low-density lipoprotein cholesterol(LDL-C)levels were measured with an automatic biochemistry analyzer.The components from JHFE obtained from in vivo and in vitro experiments were investigated using an UPLC-Q Exactive-Orbitrap MS/MS.Results:The TC,TG,and LDL-C in the serum significantly decreased and the HDL-C significantly increased after JHFE treatment.A total of 95 compounds from JHEF including 15 phenolic acids(PA),4 phenylethanoid glycosides(PG),24 flavonoids(F),14 triterpenoids(T),10 diterpenoid glycosides(D),18 alkaloids(A)and 10 others(O)were identified.Trigonelline was discovered for the first time in a herbal medicine of Juhe Fang.Furthermore,68 compounds were identified in vivo including 28 prototype compounds and 40 metabolites.The metabolic characteristics of these components were revealed including identification of new metabolites of 4-hydroxyphenyl ethyl-8-O-[a-L-arabinopyranosyl-(1/6)]-b-D-glucopyranoside(PEG)and lirinidine.A total of 43 components from JHFE were absorbed and/or metabolized.The contribution rate of each type of chemical component from JHFE to its lipidlowering effect from high to low were A,F,PG,PA,D and T.Conclusion:The results of this study showed that JHFE demonstrated a significant lipid-lowering effect in a high-fat diet(HFD)-induced hyperlipidemia mouse model.Specific types of PA,PG,F,D,T and A formed the pharmaceutical architecture of the lipid-lowering effect of JHFE.This study should prove useful for clarifying the components responsible for the lipid-lowering effect of JHFE and provide a basis for precision quality control research. | Jing Kong Lulu Liu Yuanyuan Gao Siyu Chen Linfu Li Yisong Shu Daohan Sun Yanyan Jiang Renbing Shi | 2020 | Journal of Traditional Chinese Medical Sciences2020，7，3： | 0 |
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