Wang Y.,Huangshan University
Agro Food Industry Hi-Tech | Year: 2017
Based on the analysis of the development of forestry and ecotourism, data of another section are used to estimate the forestry comprehensive benefits of samples of the first-order time series, generalized dynamic matrix based elasticity signal of forestry growth promoted by ecotourism is modified, and decision unit relaxation is used to measure growth of forestry's comprehensive benefits based on ecotourism to improve performance. Besides, vector autoregressive method is used to estimate factors influencing the development of forestry influenced by ecotourism. This study finds that influence of forestrybased ecotourism should be gradually enhanced. At present, growth of forestry resources and forestry is already very rapid. Further mining and product expansion can be carried out through forestry resources and forestry tourism resources. Ecotourism, as a support of forestry comprehensive benefits, should be further deepened and explored in terms of themes, products and services. As an intermediate factor adjusting forestry resources and ecotourism, forestry protection tourism in ecotourism should be included in the entire framework of forestry comprehensive growth.
Ke Z.,Nanjing University |
Ke Z.,Huangshan University |
Hou X.,Anhui University |
Jia X.-B.,Nanjing University
Drug Design, Development and Therapy | Year: 2016
Background: The main purpose of this research was to design a self-nanoemulsifying drug delivery system (SNEDDS) for improving the bioavailability of cyclovirobuxine D as a poorly water-soluble drug. Materials and methods: Solubility trials, emulsifying studies, and pseudo-ternary phase diagrams were used to screen the SNEDDS formulations. The optimized drug-loaded SNEDDS was prepared at a mass ratio of 3:24:38:38 for cyclovirobuxine D, oleic acid, Solutol SH15, and propylene glycol, respectively. The optimized formulation was characterized in terms of physicochemical and pharmacokinetic parameters compared with marketed cyclovirobuxine D tablets. Results: The optimized cyclovirobuxine-D-loaded SNEDDS was spontaneously dispersed to form a nanoemulsion with a globule size of 64.80±3.58 nm, which exhibited significant improvement of drug solubility, rapid absorption rate, and enhanced area under the curve, together with increased permeation and decreased efflux. Fortunately, there was a nonsignificant cytotoxic effect toward Caco-2 cells. The relative bioavailability of SNEDDS was 200.22% in comparison with market tablets, in rabbits. Conclusion: SNEDDS could be a potential candidate for an oral dosage form of cyclovirobuxine D with improved bioavailability. © 2016 Ke et al.
Cui X.,Huangshan University
Functional Materials | Year: 2017
This paper mainly discusses the knowledge management of software project, and designs the innovation knowledge base with the project development as the core. © 2017 - STC "Institute for Single Crystals".
Cao H.,Huangshan University
Open Civil Engineering Journal | Year: 2017
Experimental studies on basalt fiber have been performed in China and abroad. Specifically, the compressive properties, flexural properties, splitting tensile properties and impact test behavior of chopped basalt fiber-reinforced concrete have been investigated. In addition, the effects of the mixing amount of fibers on the mechanical properties of C30 concrete were scrutinized, and the best mixing amount of fibers was obtained. The results indicate that the static and impact test behaviors of basalt fiber reinforced concrete significantly improved, and strengthening and toughening effects were achieved. © Hai Cao; Licensee Bentham Open.
Shi M.,Anhui University of Science and Technology |
Sun C.,Anhui University of Science and Technology |
Jiang F.,Huangshan University |
Yan X.,Huangshan University |
Du J.,Anhui University of Science and Technology
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2012
We present a complete treatment for the quantum discord of two-qubit X states, by developing a geometric picture of a quantum steering ellipsoid. It is shown that either a von Neumann measurement or a three-element positive-operator-valued measurement is optimal. The condition for the latter is obtained and expressed in geometric language. We show, by using analytical as well as numerical results, that there is a systematic structure in the optimal decomposition which exists in a class of states including the X states. More significantly, we establish the relation to the quantum channel by identifying the steering ellipsoid with the quantum channel ellipsoid. Thus the quantum discord and classical correlation are closely related to the concept of the entanglement entropy of the quantum channel. © 2012 American Physical Society.
Qian L.,Huangshan University |
Ma M.,Huangshan University |
Cheng D.,Huangshan University
Journal of Molecular Liquids | Year: 2014
It is demonstrated that nanoparticles are ubiquitous in subsurface sediments; therefore, investigation of the adsorption and desorption of U(VI) on nanoparticles plays vital role in the understanding of the fate and transport of U(VI) in sub-sediment at their initial sources. The nano-alumina was synthesized by self-assemble method and was characterized by TEM, XRD and potentiometric titration. The characteristic results revealed the presence of nanoscale space confinement effect of nano-alumina. The batch adsorption of U(VI) on nano-alumina was carried out under various water chemistry such as reaction time, pH, ionic strength, initial U(VI) concentration and temperature. The maximum adsorption capacity of nano-alumina and alpha-alumina calculated from Langmuir model at pH 4.5 and T = 298 K are 92.59 and 59.88 mg/g, respectively. Approximately 35% and 5% of U(VI) are desorbed from alpha-alumina and nano-alumina at 48 h in the presence of 0.01 M NaHCO3 solution, which indicate that the nano-alumina presents the strong chemical affinity for U(VI) as compared to alpha-alumina. This study implies that nano-alumina could be as a promising adsorbent to remove the U(VI) from aqueous solutions. © 2014 Elsevier B.V.
Jin S.,Huangshan University
MATEC Web of Conferences | Year: 2016
Different biomaterials have been used as scaffolds for bone tissue engineering. The purpose of the study was to analyze the effect of bovine bone collagen to the porosity, water retention, degradation rate and biomechanical characteristics of composite scaffolds. Methods: Bovine bone collagen solution was mixed with cellulose nanofibers solution, and then the mixture was added a certain quality of hydroxyapatite. We divided the mixture into two groups according to the different bovine bone collagen solution mass fraction: No.1 (0 % bovine bone collagen), No.2 (50 % bovine bone collagen). The surface structure and the pore size was observed under the Scanning electron microscopic. Then we calculated the porosity, degradation rate, water content and biomechanical properties. Results: Two groups of scaffold materials showed a multi-pore structure. The average pore size were 133.4 ±13.5 μm and 221.7 ± 16.8μm. The porosity was (91.65 ±1.75) % and (85.42 ±1.48) %. Statistical analysis showed that two groups of material porosity difference were statistically significant (P<0.05). The degradation rates of two groups of scaffold materials at six weeks were (60.25±1.81) % and (23.16±1.027) %. Statistical analysis showed that the degradation rate of the material differences between the two groups were statistically significant (P<0.05). Water content of two groups of scaffold materials was (97.44±0.98 % and (91.36±0.77) %. Statistical analysis showed that the water content of the material differences between the two groups were statistically significant (P<0.05). Biomechanical properties of the second group increased significantly. Conclusion: It could be seen from the experimental data that bovine bone collagen could increase the pore size, improved stability to degradation and the biomechanical strength of materials. Therefore, the biocomposite studied has several characteristics considered as ideal for its use as a scaffold for osteoconduction and osteoinduction. © The Authors, published by EDP Sciences, 2016.
Qi Z.,Huangshan University
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry | Year: 2016
A new dicopper complex [Cu2(L)(N3)2](ClO4)2·4H2O (1) with imidazole-containing macrocyclic polyamine ligand was synthesized, and characterized by elemental analysis, FT-IR, UV-Vis, TGA, single-crystal X-ray diffraction, and PXRD. Complex 1 crystallizes in monoclinic, space group P21/c. The coordination geometry around Cu(II) atom is five-coordinated distorted trigonal-bipyramid, and the imidazole-pendants and the azide anions are located on the different sides of the macrocyclic ligand. © 2016 Taylor & Francis Group, LLC.
Jiang H.,Huangshan University
Computers and Mathematics with Applications | Year: 2012
In this paper, we use the analytic semigroup theory of linear operators and the fixed point method to prove the existence of mild solutions for the semilinear fractional order functional differential equations with impulse in a Banach space. © 2011 Elsevier Ltd. All rights reserved.
Wang A.,Huangshan University
Acta Crystallographica Section E: Structure Reports Online | Year: 2012
The binuclear title compound, [Cu 2(C 7H 4N 3O 2) 4(C 3H 7NO) 2], is a discrete metal-organic compound having a paddle-wheeltype structure. The Cu···Cu distance is 2.6366(5) Å and an inversion center is located at the mid-point of this bond. The Cu II cation is coordinated by four carboxylate O atoms from four 4-azidobenzoate ligands, and one O atom from a dimethylformamide molecule, forming an overall distorted octahedral geometry when the Cu·· ·Cu bond is also considered.