Anshan Normal College

Anshan, China

Anshan Normal College

Anshan, China
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Wang X.,National Research Center for Geoanalysis | Wang X.,Anshan Normal College | Chen S.,National Research Center for Geoanalysis | Wan K.,National Research Center for Geoanalysis | And 4 more authors.
Bulletin of Environmental Contamination and Toxicology | Year: 2017

Organochlorine pesticides and polychlorinated biphenyls in surface soils of Changbai Mountain, Northeastern China, have been quantified by gas chromatography with electron capture detector and the altitude distributions and possible pollution sources were analyzed. The concentrations of ∑HCHs, ∑DDTs and ∑7PCBs were in the range of 3.09–25.6, 0.96–19.4 and 7.32–26.1 ng/g dw, respectively. The concentration of α-HCH, β-HCH, p,p′-DDT, p,p′-DDE, PCB 101, 138, 153, and 180 showed increasing trends with altitude. ∑7PCBs in surface soils of Changbai Mountain were significantly higher than that in Chinese background areas. The concentration of lower volatile PCB isomers showed positive correlation with altitude. These pollutants may originate from the adjacent industrial and agricultural areas via atmospheric transport and cold-trapping effect through wet precipitation. Additional, DDTs may cause a certain potential ecological risks on birds and soil organisms and the usage of lindane in the adjacent areas cannot be excluded in Changbai Mountain. © 2017 Springer Science+Business Media New York

Lu G.-H.,National Research Center for Geo analysis | Gai N.,National Research Center for Geo analysis | Zhang P.,Chinese Academy of science | Piao H.-T.,National Research Center for Geo analysis | And 6 more authors.
Chemosphere | Year: 2017

Perfluoroalkyl acids (PFAAs) are widely used as multi-purpose surfactants or water/oil repellents. In order to understand the contamination level and compositional profiles of PFAAs in aqueous environment in textile, leather, and paper making industrial areas, surface waters and tap waters were collected along the watershed of the Qiantang River where China's largest textile, leather, and paper making industrial bases are located. For comparison, surface water and tapwater samples were also collected in Hangzhou and its adjacent areas. 17 PFAAs were analyzed by solid phase extraction-high performance liquid chromatography-tandem mass spectrometry. The results show that the total concentrations of PFAAs (ΣPFAAs) in the Qiantang River waters ranged from 106.1 to 322.9 ng/L, averaging 164.2 ng/L. The contamination levels have been found to be extremely high, comparable to the levels of the most serious PFAA contamination in surface waters of China. The PFAA composition profiles were characterized by the dominant PFOA (average 58.1% of the total PFAAs), and PFHxA (average 18.8%). The ΣPFAAs in tap water ranged from 9.5 to 174.8 ng/L, showing PFAA compositional pattern similar to the surface waters. Good correlations between PFAA composition profiles in tap waters and the surface waters were observed. © 2017 Elsevier Ltd

Guo H.,CAS Kunming Institute of Botany | Guo H.,Anshan Normal College | Guo H.,University of Chinese Academy of Sciences | Si J.,Beijing Forestry University | And 5 more authors.
Journal of Asian Natural Products Research | Year: 2013

Two new triterpenoids, 3β-(2-methoxy-oxalyloxy)-24-methylene-lanost-8- en-21-oic acid (1) and 3β-(2-methoxy-oxalyloxy)-15-hydroxy-24-methylene- lanost-8-en-21-oic acid (2), were isolated from cultures of the fungus Perenniporia maackiae, together with two previously known triterpenoids (3 and 4). Their structures were determined by spectroscopic methods, including 1D and 2D NMR, and MS analyses. All compounds were evaluated for their cytotoxic activities on five tumor cell lines. © 2013 Copyright Taylor and Francis Group, LLC.

Liu H.J.,University Of Science And Technology Liaoning | Wang H.Y.,Anshan Normal College
Advanced Materials Research | Year: 2013

For the dispersion problem of the widespread sensors in the R & D process of measuring instruments, this paper proposes a practical method for the automatic calibration of linearity error. Meanwhile, it takes the pressure sensor as an example to describe different calibration methods such as using the hardware, the combination of software and hardware, using the software. © (2013) Trans Tech Publications, Switzerland.

Li M.,Anshan Normal College | Zhang Y.,Anshan Normal College | Li L.,Northeastern University China
Functional Materials Letters | Year: 2010

The structural and electronic properties of the calcium ferrite-type LiMn2 O 4 were studied using the full-potential linearized augmented plane wavemethod. The results showed that LiMn 2 O 4 was an antiferromagnetic semiconductor from GGA+U calculations, similar to the experimental report of Li 0.92Mn2 O 4. The spin magnetic moments and density of states of Mn atoms showed that LiMn2 O 4 was a mixed-valence compound with Mn3+ and Mn 4+ cations randomly distributed amongst the octahedral sites. © 2010 World Scientific Publishing Company.

Li M.,Anshan Normal College | Zhang P.,Anshan Normal College | Wei X.,Tongji University
Journal of Physics and Chemistry of Solids | Year: 2016

The structural stability and physical properties of CrNCN were studied using density functional theory with explicit electronic correlation (GGA+U). Calculated results indicate that the title compound, similar to MNCN (M=Mn, Fe, Co, Ni), is thermodynamically stable but mechanically unstable. Analysis of electronic and magnetic structures reveals that CrNCN is an antiferromagnetic semiconductor. However, the exact magnetic structure of CrNCN consists of an antiferromagnetic intralayer and a ferromagnetic interlayer, which differs from that of the type-II antiferromagnetic semiconductor MNCN (M=Mn, Fe, Co, Ni), which consists of a ferromagnetic intralayer and an antiferromagnetic interlayer. © 2016 Elsevier Ltd

Lu Y.,Dalian Jiaotong University | Li M.,Anshan Normal College | Rahman A.,Tongji University | Shen J.,Tongji University | And 3 more authors.
Scripta Materialia | Year: 2014

The relationship between particle diffusion and free volume of colloidal glass was studied in real space by laser scanning confocal microscopy. By quantifying the particle diffusion distance and the free volume size, we found a strong spatial correlation between these two quantities. Large free-volume regions were observed to possess low elastic modulus and thus results in a low energy cost of diffusion-induced strain, indicating that a large free-volume region presents a low energy barrier to structural rearrangement, thereby benefiting particle diffusion. © 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Guo H.,CAS Kunming Institute of Botany | Guo H.,Anshan Normal College | Guo H.,University of Chinese Academy of Sciences | Feng T.,CAS Kunming Institute of Botany | And 2 more authors.
Journal of Asian Natural Products Research | Year: 2012

Four new compounds, craterellin D (1), 5-hydroxymethyl-2-hydroxy-4-methoxy- phenylethanone (2), 5-carboxyl-2-[2-(1,2-dihydroxyisopropyl)]-benzofuran (3), and 6-hydroxy-3-methoxy-4-methyl-2-cyclohexen-1-one (4), were isolated from cultures of the basidiomycete Craterellus odoratus, together with three known compounds craterellins A-C (5-7). Structures of 1-4 were elucidated on the basis of extensive spectroscopic analysis. Selected compounds were evaluated for their inhibitory activities against one isozyme of 11-hydroxysteroid dehydrogenase (11-HSD1) and cytotoxic activities on five tumor cell lines. Compound 2 was found to exhibit inhibitory activity against human 11-HSD1 with an IC50 value of 16.4g/ml. © 2012 Copyright Taylor and Francis Group, LLC.

Teng Z.,Jilin University | Han Y.,Anshan Normal College | Li J.,Jilin University | Yan F.,Jilin University | Yang W.,Jilin University
Microporous and Mesoporous Materials | Year: 2010

Hollow mesoporous silica spheres were synthesized by a sol-gel/emulsion (oil-in-water/ethanol) approach, in which cetyltrimethylammonium bromide (CTAB) surfactant was employed to stabilize and direct the hydrolysis of oil droplets of tetraethoxysilane (TEOS). The diameters of the hollow spheres can be tuned in the range from 210 to 720 nm by varying the ratio of ethanol-to-water and their shell thickness can be mediated by changing the concentration of CTAB used in the system. BET surface areas of the hollow silica spheres are determined to be in the range of 924-1766 m2 g-1 and their pore sizes are around 3.10 nm as determined by BJH method. © 2009 Elsevier Inc. All rights reserved.

Lou Y.,Anshan Normal College | Pu T.,Anshan Normal College | Geng X.,Anshan Normal College
Proceedings of the 2012 International Conference on Industrial Control and Electronics Engineering, ICICEE 2012 | Year: 2012

According to the present management and construction of city pipe net, this paper analyzed spatial functions of underground city pipe net in Anshan City, and proposed detailed design and steps. The work in this paper is effective to the burst analysis and fracture. The practical application shows its value in the management of the city pipe net. © 2012 IEEE.

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