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Start Over Author "Yu, Yongfu" Publisher springer science and business media llc
30 results on '"Yu, Yongfu"'

12. Derivation and validation of a prognostic model for predicting in-hospital mortality in patients admitted with COVID-19 in Wuhan, China: the PLANS (platelet lymphocyte age neutrophil sex) model

Author

Li, Jiong, primary, Chen, Yuntao, additional, Chen, Shujing, additional, Wang, Sihua, additional, Zhang, Dingyu, additional, Wang, Junfeng, additional, Postmus, Douwe, additional, Zeng, Hesong, additional, Qin, Guoyou, additional, Shen, Yin, additional, Jiang, Jinjun, additional, and Yu, Yongfu, additional

Published
2020
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15. Imaging Features Suggestive of Multiple Primary Lung Adenocarcinomas

Author

Zhang, Yiliang, primary, Li, Guodong, additional, Li, Yuan, additional, Liu, Quan, additional, Yu, Yongfu, additional, Ma, Yuan, additional, Pan, Yunjian, additional, Zhang, Yang, additional, Hu, Hong, additional, Sun, Yihua, additional, Zhang, Yawei, additional, Xiang, Jiaqing, additional, and Chen, Haiquan, additional

Published
2019
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18. Comparative analysis of co-occurring mutations of specific tumor suppressor genes in lung adenocarcinoma between Asian and Caucasian populations

Author

Zhang, Yiliang, primary, Ma, Yuan, additional, Li, Yuan, additional, Shen, Xuxia, additional, Yu, Yongfu, additional, Pan, Yunjian, additional, Zhang, Yang, additional, Zheng, Difan, additional, Zhao, Yue, additional, Ye, Ting, additional, Li, Bin, additional, Hu, Hong, additional, Sun, Yihua, additional, Zhang, Yawei, additional, Xiang, Jiaqing, additional, and Chen, Haiquan, additional

Published
2019
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19. Are exon 19 deletions and L858R different in early stage lung adenocarcinoma?

Author

Zhang, Yiliang, primary, Ma, Yuan, additional, Li, Yuan, additional, Shen, Xuxia, additional, Yu, Yongfu, additional, Pan, Yunjian, additional, Zhang, Yang, additional, Yu, Su, additional, Zheng, Difan, additional, Zhao, Yue, additional, Hu, Hong, additional, Sun, Yihua, additional, Zhang, Yawei, additional, Xiang, Jiaqing, additional, and Chen, Haiquan, additional

Published
2017
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20. Preparation and properties of pillared montmorillonite by polyhydroxyl-aluminum-manganese cations

Author

Cao Ming-li, Cao Minghe, Yuan Ji-zu, and Yu Yongfu

Subjects
Aqueous solution, Materials science, Inorganic chemistry, law.invention, chemistry.chemical_compound, Adsorption, Montmorillonite, chemistry, law, Specific surface area, Differential thermal analysis, Bentonite, General Materials Science, Calcination, Thermal stability
Abstract

Al−Mn-pillared montmorillonite (AMPM) was prepared by using the artificial Na-montmorillonite from the Qingfengshan bentonite mine as starting materials mixed with Al−Mn pillaring solutions at different Al/Mn molar ratios (R). The basal spacing and specific surface area of the materials were increased significantly compared with untreated clays. When R=0.5, the d(001) value and specific surface area of pillared montmorillonite were 1.8987 nm and 146.01 m2 g−1, respectively. The thermal stability was determined using calcined tests, X-ray diffraction (XRD) analysis, thermal gravimetry and differential thermal analysis(TG-DTA). The materials formed at initial R=0.5 exhibited a high stability, the basal interlayer spacing was stabilized at 1.7859 nm after calcined for 2 h at 300°C. The adsorption behavior of the materials was studied by adsorption experiments. The results show the AMPM and calcined Al−Mn-pillared montmorillonite(CAMPM) exhibit a strong capacity of adsorbing the Zn(II) in aqueous solution at pH 10.0.

Published
2002

21. Synthesis and characteristics of organic bentonite gel

Author

Yuan Ji-zu, Lei Dongsheng, and Yu Yongfu

Subjects
Materials science, Alcohol, engineering.material, Hydrothermal circulation, Matrix (chemical analysis), chemistry.chemical_compound, Viscosity, chemistry, Coating, Chemical engineering, Polymer chemistry, Bentonite, engineering, General Materials Science, Nanometre, Ammonium chloride
Abstract

The bentonite was modified using Cabentonite as a matrix and octadecyl/hexadecyl ammonium chloride as the cover agent, based on hydrothermal process. The organic gel with 5.0 Pa · s viscosity was synthesized by dispersing it into the dimethyl benzene-methyl alcohol system fully. The optimum process conditions for organic modification were that the coating agent dosage is 22 g/L, reaction time is 90 minutes and the pH value of pulp is 10. X-ray diffraction (XRD) analysis indicates that the d (001) value of the modified bentonite is 20. 532 A. The influence of gel temperature on its viscosity characteristic was studied. By analyzing the transmssion electron microscopy (TEM) images and observing the dispersed gel, the nanometer effect of the organic gel was discussed.

Published
2006

22. The motion trace of particles in classifying flow field

Author

Yu Yongfu, Li Guo-hua, and Nie Wenping

Subjects
Physics::Fluid Dynamics, Materials science, Classical mechanics, Computer simulation, biology, Turbulence, Turbo, General Materials Science, Mechanics, biology.organism_classification, Flow field, Research method
Abstract

According to the theory of the stochastic trajectory model of particle in the gas-solid two-phase flows, the two-phase turbulence model between the blades in the inner cavity of the FW-Φ150 horizontal turbo classifier was established, and the commonly-used PHOENICS code was adopted to carried out the numerical simulation. It was achieved the flow characteristics under a certain condition as well as the motion trace of particles with different diamenters entering from certain initial location and passing through the flow field between the blades under the correspondent condition. This research method quite directly demonstrates the motion of particles. An experiment was executed to prove the accuracy of the results of numerical simulation.

Published
2005

23. Synthesis and characterization of Al−Cr-pillared montmorillonite with high thermal stability and adsorption capacity

Author

Liu Shi-zhen, Yu Yongfu, and Cao Ming-li

Subjects
Aqueous solution, Materials science, Inorganic chemistry, law.invention, Characterization (materials science), chemistry.chemical_compound, Adsorption, Montmorillonite, Chemical engineering, chemistry, law, Specific surface area, Bentonite, General Materials Science, Calcination, Thermal stability
Abstract

Al−Cr-pillared montmorillonite was synthesized by using bentonite and Al−Cr pillaring solutions as starting materials. The basal spacing and specific surface areas of the materials were significantly increased relative to those of untreated clays. When the Al/Cr molar ratio (R) was 0.10, the d(001) value and specific surface area of pillared montmorillonite were 1.9194 nm and 165.7 m2g−1, respectively. Thermal stability of the materials was determined using calcined tests and X-ray diffraction (XRD) analysis. The materials formed at different R(0.05;0.10;0.15;0.25) exhibit a high thermal stability at 300°C, especially at initial R=0.10, the basal interlayer spacing of materials is stabilized at 1.7313 nm after calcined at 500°C for 2 h. Adsorption behavior of the materials was studied by adsorption experiments. The results show that the Al−Cr-pillared montmorillonites exhibit much stronger adsorption capacity on Cr6+ in aqueous solution than untreated clays do.

Published
2004

24. Synchronous Non-small Cell Lung Cancers: Diagnostic Yield can be Improved by Histologic and Genetic Methods

Author

Zhang, Yiliang, primary, Hu, Haichuan, additional, Wang, Rui, additional, Ye, Ting, additional, Pan, Yunjian, additional, Wang, Lei, additional, Zhang, Yang, additional, Li, Hang, additional, Li, Yuan, additional, Shen, Lei, additional, Yu, Yongfu, additional, Sun, Yihua, additional, Chen, Haiquan, additional, and Garfield, David, additional

Published
2014
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