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Longyan, China

Zhu L.-H.,Shandong University of Science and Technology | Zhang C.-W.,Shandong University of Science and Technology | Tang Y.-J.,Shandong University of Science and Technology | Huang R.-H.,Shandong University of Science and Technology | And 2 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2010

Effects of the condensation temperature and time, condensation pH, and the addition of modifiers on free formaldehyde content of the polyvinyl formal (PVF) adhesive were studied, and the optimal conditions to produce the environmental protection PVF adhesive with a free formaldehyde content of 0.26% were obtained on the premise of the bonding strength of the adhesive. Source


Zhu L.-H.,Shandong University of Science and Technology | Lin M.,Shandong University of Science and Technology | Tang Y.-J.,Shandong University of Science and Technology | Huang R.-H.,Shandong University of Science and Technology | And 2 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2010

Effects of the proportion of formaldehyde to urea, condensation polymerization temperature and time, condensation polymerization pH, as well as the addition of modifiers on free formaldehyde content of urea formaldehyde (UF) resin adhesive, which was prepared using urea and formaldehyde as the main materials, were studied. The optimal conditions to produce the adhesive with a free formaldehyde content of 0.25% were obtained on the premise of the bonding strength of the adhesive. Source


Zhu L.-H.,Shandong University of Science and Technology | Zhang L.-L.,Shandong University of Science and Technology | Tang Y.-J.,Shandong University of Science and Technology | Ding M.-T.,Longyan College | Ding M.-T.,Xiamen University
Gongneng Cailiao/Journal of Functional Materials | Year: 2012

Montmorillonite/sodium alginate graft poly (acrylic acid) superabsorbent composite was prepared by intercalation polymerization of sodium alginate (SA), acrylic (AA) and montmorillonite (MMT) using ammonium persulfate (APS) as an initiator and N, N'-methylenebisacrylamide (MBA) as a cross linker. The super-absorbent composite was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Sorption behavior of heavy metal ions on MMT/SA-g-PAA was investigated. Maximal amount of adsorption for Pb 2+, Cu 2+ and Ni 2+ was 968.9, 231.0 and 236.0 mg/g, respectively, and the adsorption of Pb 2+ and Cu 2+ was in accordance with Langmuir model, while that of Ni 2+ was in accordance with Freundlich model. Source


Wang Q.,Beijing Normal University | Wu L.,China University of Mining and Technology | Chen S.,Longyan College | Shu D.,Zijin Mining Group Co. | And 3 more authors.
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives | Year: 2014

This study investigates the usability of low-attitude unmanned aerial vehicle (UAV) acquiring high resolution images for the geometry reconstruction of opencast mine. Image modelling techniques like Structure from Motion (SfM) and Patch-based Multi-view Stereo (PMVS) algorithms are used to generate dense 3D point cloud from UAV collections. Then, precision of 3D point cloud will be first evaluated based on Real-time Kinematic (RTK) ground control points (GCPs) at point level. The experimental result shows that the mean square error of the UAV point cloud is 0.1 1m. Digital surface model (DSM) of the study area is generated from UAV point cloud, and compared with that from the Terrestrial Laser Scanner (TLS) data for further comparison at the surface level. Discrepancy map of 3D distances based on DSMs shows that most deviation is less than ±0.4m and the relative error of the volume is 1.55%. Source


Yang J.,Xiamen University | Chen W.,Xiamen University | Fu Z.,Longyan College | Wu W.,Xiamen University | Xie Z.,Xiamen University
International Journal on Smart Sensing and Intelligent Systems | Year: 2014

This paper studies some key technology of multifunctional sensor signal reconstruction. The multifunctional sensor signal reconstruction problem, presented a multifunctional sensor signal reconstruction method based on B spline and the extended Calman filter. The method of inverse model of the process was studied, gives a method to estimate signal reconstruction accuracy and computation. Genetic algorithm is proposed to balance the multifunctional sensor signal reconstruction accuracy and computation based on. In order to further reduce the sampling effort of large quantities of multifunctional sensor signal reconstruction, is proposed based on the reduction method clustering multifunctional sensor sample selection method, to select the reasonable distribution, suitable for inverse training data model. A new direction to study the theory of multi sensor information fusion is to design and analysis more efficient processing of multi sensor intelligent system is proposed and developed. With the continuous improvement of the intelligent system requirements, research on information fusion of multi-sensor system is affected by the people more and more attention. Source

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