Anhui University of Architecture
Hefei, China

Anhui Jianzhu University is a public university based in Hefei, Anhui province in China. Wikipedia.

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Li P.,Anhui University of Architecture | Deng S.-H.,Beihang University | Huang J.,Anhui University of Architecture
Applied Physics Letters | Year: 2011

Based on first-principles calculations, we suggest that the P Zn-2VZn complex is the dominant acceptor in phosphorus-doped ZnO with a calculated transition level of 150 meV. We suggest that the out-diffusion of zinc interstitials will indirectly favor the formation of the PZn-2VZn complex. According to this mechanism, an upper limit of annealing temperature of about 860 C is obtained, which is high enough to activate the doped ZnO from n- to p-type. This mechanism applies to the other group-V dopants. The above results are in agreement with the experimental reports. © 2011 American Institute of Physics.

Zhu C.,Anhui University of Architecture | Hu G.,Wuhan University
Applied Mechanics and Materials | Year: 2013

Time series analysis has the ability to forecast the evolve trend of complex systems, which has been the issue in the research of landslide displacement dynamic forecasting. The Support Vector Machine (SVM) regression, we proposed, has been applied in Baishuihe landslide in Three Gorges Reservoir Area, China. The Oracle Data Mining (ODM) PL/SQL API have been introduced to build the SVM regression model for data mining process. The data was divided into two parts, wherein the first 36 months data used for training, and the other 6 months data used for validation. The results show that the error rate of the previous 5 was controlled within 8% and the accuracy of the 6th is 84.1%, which indicates SVM regression is reliable to calculate the displacement factors and can be used in short term prediction of landslide monitoring data. © (2013) Trans Tech Publications, Switzerland.

Zhang Y.C.,Yangzhou University | Li J.,Yangzhou University | Xu H.Y.,Anhui University of Architecture
Applied Catalysis B: Environmental | Year: 2012

SnS 2/TiO 2 nanocomposites with adjustable TiO 2 contents were synthesized directly via the solvothermal reactions of SnCl 4·5H 2O, thioacetamide and different amounts of tetrabutyl titanate in the mixed solvents of ethanol and acetic acid at 180°C for 12h. The structures, compositions, Brunauer-Emmett-Teller (BET) specific surface areas and optical properties of the as-synthesized products were characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, high resolution transmission electron microscopy, N 2 adsorption and UV-vis diffuse reflectance spectra, and their photocatalytic properties were tested for the reduction of aqueous Cr(VI) under visible light (λ>420nm) irradiation. Furthermore, contrast photocatalytic experiments were also conducted for different doses of the as-synthesized SnS 2/TiO 2 nanocomposite, SnS 2 and physical mixture of SnS 2 and TiO 2. It was found that the as-synthesized SnS 2/TiO 2 nanocomposite with a suitable TiO 2 content (e.g., 44.5mass% TiO 2) not only exhibited extraordinary superior photocatalytic activity to SnS 2, TiO 2 and physical mixture of SnS 2 and TiO 2 (44.5mass%) at different catalyst doses, but also had good photocatalytic stability. Moreover, Cr(VI) can be reduced to Cr(III) by SnS 2/TiO 2-mediated photocatalysis. The tight heterojunction structure of the as-synthesized SnS 2/TiO 2 nanocomposite, which can facilitate interfacial electron transfer and reduce the separation and self-agglomeration of two components, was considered to play an important role in achieving its greatly improved photocatalytic performance. © 2012 Elsevier B.V.

Zhou X.,Hefei University of Technology | Shi T.,Hefei University of Technology | Zhou H.,Anhui University of Architecture
Applied Surface Science | Year: 2012

Hydrothermal method was utilized to prepare reduced graphene oxide (RGO) and fabricate ZnO-RGO hybrid (ZnO-RGO) with zinc nitrate hexahydrate and graphene oxide (GO) as raw materials under pH value of 11 adjusted by ammonia water. During the process of reduction of GO, hydrothermal condition with ammonia provided thermal and chemical factors to synthesize RGO. The retained functional groups on RGO planes played an important role in anchoring ZnO to RGO, which was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning and transmission electron microscopy and photoluminescence spectra. The various mass ratios of zinc nitrate hexahydrate to GO used to prepare ZnO-RGO impacted significantly on the morphology of ZnO nanostructures such as nanoparticles and nanorods. And, the RGO sheets wrapped ZnO nanoparticles and nanorods very tightly. After the emission of photo electrons from ZnO, RGO in ZnO-RGO can effectively transfer the photo electrons to exhibit a high performance and reproducibility in photocatalytic degradation toward methylene blue (MB) absorbed on the surface of RGO through π-π conjugation. © 2012 Elsevier B.V.

Hou K.,Anhui University of Architecture
Quantum Information Processing | Year: 2013

For N+1-sender independently share the classical knowledge of a quantum state, a new scheme for joint remote preparation of four-particle cluster-type states using only two partially two-particle entangled states as quantum channel is presented. In our scheme, each of the senders is just required to perform a bipartite projective measurement, and the receiver adopts some appropriate unitary operation to obtain the original state with certain probability. We also discuss four type information-splitting methods which can make the receiver obtain the unknown state. The classical communication cost is also calculated. © 2013 Springer Science+Business Media New York.

Zhou J.,Anhui University of Architecture
Advances in Information Sciences and Service Sciences | Year: 2012

In this paper, we investigate the multiple attribute decision making (MADM) problems for appraisal model of venture capital investing project based on high-tech outcome transformation with uncertain linguistic information. We utilize the uncertain linguistic weighted geometric mean (ULWGM) operator to aggregate the uncertain linguistic information corresponding to each alternative and get the overall value of the alternatives, then rank the alternatives and select the most desirable one(s) by using the formula of the degree of possibility for the comparison between two uncertain linguistic variables. Finally an illustrative example for appraisal model of venture capital investing project based on high-tech outcome transformation with uncertain linguistic information has been given to show the developed approach and to demonstrate its feasibility and practicality.

New strategies for silica coating of inorganic nanoparticles became a research hotspot for enhancing the mechanical stability of colloidal particles and protecting colloidal particles against oxidation and agglomeration, and so on. In this paper, 3-aminopropyltriethoxysilane (APTES)-functionalized Mn doped (AF MnD) ZnS QDs was prepared to be firsyly through the use of silane coupling agents to form an active layer of silica, then sol-gel reaction of TEOS co-deposited with APTES on the surface of resultant active layer of silica. The emitted long lifetime room-temperature phosphorescence (RTP) of the resultant nanomaterials allows an appropriate delay time so that any fluorescent emission and scattering light can be easily avoided. The APTES anchored on the layer of silica can bind 2,4,6-trinitrotoluene (TNT) species to form TNT anion through acid-base pairing interaction, the TNT anion species may increase the charge-transfer pathways from the nanocrystals to nitroaromatic analytes, therefore further enhance the quenching efficiency of RTP. Moreover, APTES as capped reagents can enlarge the spectral sensitivity and enhance RTP response of nanocrystals to the electron-deficient nitroaromatic and nitrophenol species. Meanwhile, AF MnD ZnS QDs also exhibited a highly selective response toward TNT analyte through significant color change and quenching of 4T 1 to 6A1 transition emission. This AF MnD ZnS QDs based sensor showed a very good linearity in the range of 0.05-1.8 μM with detection limit down to 50 nM (quenching percentage of phosphorescence intensity of 8%) and RSD of 3.5% (n = 5). The reported QDs-based chemosensors here open up a promising prospect for the sensitive and convenient sensing of TNT explosive. © 2011 Elsevier B.V. All rights reserved.

To prepare microcapsules composed of chitosan (CS), a templating method is developed using poly(styrene sulfonate) (PSS)-doped porous calcium carbonate (CaCO3) templates as sacrificial templates. First, CS is absorbed onto PSS-doped porous CaCO3 templates, and then the absorbed CS is covalently cross-linked with each other by using glutaraldehyde. Porous CaCO3 templates are dissolved with disodium ethylenediaminetetraacetate dihydrate and the resultant CS capsules ranged from 2 to 5 μm in diameter. Nitrogen adsorption-desorption analysis are applied to characterize the porous CaCO3 templates, the BET surface area and total pore volume are 220 m2/g and 0.36 cm3/g, respectively. Field-emission scanning electron microscopy and transmission electron microscopy were used to characterize the CS capsules morphology. Confocal laser scanning microscopy images reveal that the capsules have been labeled with green fluorescein isothiocyanate. The gradual deformation of capsule in response to bulk osmotic pressure created by CS solutions has also been discussed. © 2012 Springer-Verlag.

Xia J.-J.,Anhui University of Architecture | Zhang K.-H.,Anhui University of Architecture
Molecules | Year: 2012

Acridinediones were synthesized by the one-pot Hantzsch condensation of an aromatic aldehyde, 5,5-dimethyl-1,3-cyclohexanedione, and aniline/4- methylaniline in refluxing water. This method has then been extended to the four-component reaction of an aromatic aldehyde, 5,5-dimethyl-1,3- cyclohexanedione, ethyl acetoacetate and ammonium acetate for the synthesis of polyhydroquinoline derivatives. This is an environmentally friendly and efficient procedure providing good to excellent yields. © 2012 by the Authors.

Wang G.,Anhui University of Architecture
Zeitschrift fur Angewandte Mathematik und Physik | Year: 2013

The Riemann problem for the nonlinear chromatography system is considered. Existence and admissibility of δ-shock type solution in both variables are established for this system. By the interactions of δ-shock wave with elementary waves, the generalized Riemann problem for this system is presented, the global solutions are constructed, and the large time-asymptotic behavior of the solutions are analyzed. Moreover, by studying the limits of the solutions as perturbed parameter e{open} tends to zero, one can observe that the Riemann solutions are stable for such perturbations of the initial data. © 2013 The Author(s).

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