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1

The influence of finite element meshing accuracy on a welding machine for offshore platform's modal analysis

100%
Xie J., Sun D., Xu C., Wu J.
Polish Maritime Research
|
2018
|
tom 25
|
nr Special Issue S3
The purpose objective of this study was to investigate the inf luence of finite element meshing accuracy on modal analysis which is one of the basic factors affecting the accuracy of finite element analysis and mostly preoccupies the working staff in pre-processing finite element simulation models. In this paper, we established several finite element models of a welding machine for offshore platform, with the meshing accuracy as the variable and workbench software as the platform for modal analysis, as the same time, comparing the analysis results. The results indicated that for some specific structures and simulation types, mesh refinement alone does not achieve desired results, and the authors indicate that mesh refinement is rarely related to the equipment’s low-frequency modal analysis but it’s great related to the equipment’s high-frequency modal analysis. The findings of this study may serve as breaking the opinion that smaller mesh size means higher calculation precision and provides references for mesh division practices in low frequency modal analysis
2

SFRP1 inhibited the epithelial ovarian cancer through inhibiting Wnt/Beta-catenin signaling

100%
Zhang H., Sun D., Qiu J., Yao L.
Acta Biochimica Polonica
|
2019
|
tom 66
|
nr 4
3

Enterococcus faecalis bioflocculant enhances recovery of graphene oxide from water

100%
Xu L., Ma R., Sun C., Sun D.
Polish Journal of Environmental Studies
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2018
|
tom 27
|
nr 6
Bioflocculation is a promising method of removing GO from the water as it is safe, biodegradable, and non-secondary pollution, but few studies on effective and economic bioflocculant of GO have been reported. Accordingly, this work evaluated flocculation efficiency of an extracellular bioflocculant named MBF-21 produced by Enterococcus faecalis. Optimum culture conditions for bioflocculant production were initial medium pH of 7 and incubation temperature of 40ºC. The optimum carbon and nitrogen sources for bioflocculant production were glucose and beef extract. Results of Fourier transform infrared (FTIR) indicated the presence of carboxyl, hydroxyl, and amide groups on the MBF-21. The Zeta potential of MBF-21 analysis revealed that MBF-21 was mainly negatively charged. MBF-21 showed a significant ability in flocculation of GO, and flocculation efficiency was over 90% under neutral, acidic, and alkaline conditions, indicating that flocculation of GO was ion-independent. The conditions for flocculation of GO were optimized by response surface methodology (RSM) and determined to be an 11.57 mg/L dose and flocculation time of 75 min.
4
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Scale-dependent environmental control of mesozooplankton community structure in three aquaculture subtropical bays of China

100%
Sun D., Liu Z., Wang C.
Oceanologia
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2016
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tom 58
|
nr 2
5

Evaluation of single nucleotide polymorphisms identified through the use of SNP assay in Romanian and Chinese Holstein and Simmental cattle breeds

76%
Ilie D. E., Gao Y., Nicolae I., Sun D., Li J., Han B., Gavojdian D.
Acta Biochimica Polonica
|
2020
|
tom 67
|
nr 3
6

Optimization of culturing conditions for production of somatic embryos and lignins of Schisandra chinensis (Turcz.) Baill

52%
Sun D., Wang Z., Yu Y., Li C., Qin H., Xu P., Zhao Y., Liu Y., Yang Y., Fan S., Ai J.
Acta Physiologiae Plantarum
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2018
|
tom 40
|
nr 09
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