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Feng, Xu
- Statistically-Guided Optimization of the Catalysis of Cellulose Hydrolysis via Sulfamic Acid Functionalized Magnetic Iron/Iron(III) Oxide Core-Shell Nanoparticles
Abstract Views :189 |
PDF Views:5
Authors
S. P. Ayomi
1,
W. Hongwang
1,
S. Y. Asanka
1,
B. Austin
1,
C. Jose
1,
Xu Feng
2,
W. Donghai
2,
H. B. Stefan
1
Affiliations
1 Department of Chemistry, Kansas State University, CBC Building 201, Manhattan, KS 66506, US
2 Kansas State University, Biological and Agricultural Engineering, Seaton Hall 150, Manhattan, KS 66506, US
1 Department of Chemistry, Kansas State University, CBC Building 201, Manhattan, KS 66506, US
2 Kansas State University, Biological and Agricultural Engineering, Seaton Hall 150, Manhattan, KS 66506, US
Source
Nano Science & Nano Technology: An Indian Journal, Vol 11, No 1 (2017), Pagination: 1-17Abstract
Effective optimization of the degradation of cellulose into glucose, via a magnetic catalyst is achieved, for the first time, using statistically guided modification of reaction conditions. A highly efficient procedure for the large-scale synthesis of iron/iron(III) oxide (Fe/Fe3O4)
magnetic nanoparticles (MNPs), functionalized with sulfamic acid, has been developed. The acid functionalized MNPs have been used successfully, as a heterogeneous catalyst in the hydrolysis of cellulose to glucose and other yeast-convertible sugars, with a cellulose conversion of >50%. Optimization of the reaction conditions for the catalytic reactions has been accomplished, via the Doehlert matrix statistical approach. The Catalyst has been recovered up to 82% of its original weight, over 20 reaction cycles, with only marginal losses of magnetic property and catalytic activity. Based on its' robustness and efficiency, we propose that the above catalyst is an excellent candidate for the industrial production of ethanol from plant cellulose.
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- Dynamic Response of Cross-Sea Bridge Pile Foundation Under the Coaction of Wave and Current
Abstract Views :160 |
PDF Views:119
Authors
Affiliations
1 School of Urban Construction, Wuhan University of Science and Technology, Wuhan, CN
2 China United Northwest Institute for Engineering Design & Research Co., Ltd, Xian, CN
3 School of Resource and Civil Engineering, Wuhan Institute of Technology, Wuhan, CN
1 School of Urban Construction, Wuhan University of Science and Technology, Wuhan, CN
2 China United Northwest Institute for Engineering Design & Research Co., Ltd, Xian, CN
3 School of Resource and Civil Engineering, Wuhan Institute of Technology, Wuhan, CN
Source
International Journal of Earth Sciences and Engineering, Vol 9, No 4 (2016), Pagination: 1383-1387Abstract
Bridges under the circumstances of marine environments are subject to extremely complicated loads. The precise calculation and estimation of two most important loads in deep sea, ocean waves and currents, is of essential influence to the construction of cross-sea bridges. On the basis of analyzing the effect of currents on the motion of waves and considering fluid-solid coupling effect, the paper derives the structural dynamics equation under the combined influence of waves and currents. Then, the finite element model for columns under the coaction of wave and current is constructed, and the corresponding computation program is compiled with MATLAB. The model can simultaneously estimate the drag force of current on the structure and the effect of structural deformation on the inertial force applied on it. Through model experiment, and comparing the varying effect of waves and currents on pile foundation with the changes of velocity, pile diameter and incident angle, the paper analyses the interactive effects between waves and currents, and the basic rules by which waves and current forces change with parameters.Keywords
Wave-Current Load, Cross-Sea Bridge, Pile Foundation, Dynamic Response, Fluid Structure Interaction.Full Text