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Zhang J.,Baicheng Normal College
AIP Conference Proceedings | Year: 2017

Z-Scan technology, which has the advantages of simple experimental device, convenient operation and high sensitivity, is widely used in study of nonlinear optical properties of materials. However, Z-Scan experiment is influenced by experimental environment, equipment, optical parameters and other factors, which will result in large differences in measurement data, and affect the calculation of three-order nonlinear optical polarization coefficient. Based on introducing the basic principle of laser Z-Scan technology, the paper focuses on the laser Z-Scan experiments, analysis of the factors that influence the measurement accuracy of Z-Scan, and put forward the corresponding method to improve Z-Scan experiment precision. © 2017 Author(s).


Zhang Z.,Baicheng Normal College | Zhang Z.,Jilin University
Inorganic Chemistry Communications | Year: 2012

Silver atoms and strongly interlinking α-metatungstate units ensure the 3D structure of (NH 4) 5[Ag 5(L) 2(H 2O) 8(H 2W 12O 40)]•H 2O (L = pyridine-3,5-dicarboxylate dianion), which has been synthesized in aqueous solution and characterized by the normal physical methods as well as the single-crystal X-ray diffraction. This compound represents the first example that the α-metatungstate cluster as the structural motif is linked by transition metal complexes to yield unprecedented 3D framework with the highest eleven-connected number. © 2011 Elsevier B.V. All rights reserved.


Dong H.,Harbin Institute of Technology | Dong H.,Baicheng Normal College | Chen G.,Harbin Institute of Technology | Sun J.,Harbin Institute of Technology | And 3 more authors.
Applied Catalysis B: Environmental | Year: 2013

A novel high-efficiency visible-light sensitive Ag2CO3 semiconductor photocatalyst was prepared by a simple ion-exchange method based on a strategy incorporating of p-block C element into a narrow bandgap Ag2O. This photocatalyst exhibits universal high-efficient degradation ability for typically several RhB, MO and MB dyes. Getting insight into degradation patterns of dyes over Ag2CO3 identifies they are self-oxidation behavior of semiconductor rather than the effect of photosensitization. The reaction mechanism investigated by a series of radical trapping experiments, not only ascertains the major photoreaction approaches of dyes on the surface of Ag2CO3, but also reveals the unique universality advantage that arises from selective using one of many activated species to decompose many kinds of dyes such as RhB, MO and MB. The theoretical calculation based on first-principles provides inherently essential evidences for high-efficient oxidation performance of Ag2CO3 photocatalyst. © 2013 Elsevier B.V.


Li B.,Baicheng Normal College
Advanced Materials Research | Year: 2012

SEMG detection system is of great significance in clinical diagnosis, rehabilitation engineering, sports medicine and the bionic man-machine systems as a noninvasive detection method. EMG detection system mainly researches and designs for the SEMG signal acquisition, conditioning and treatment. The system which is composed of SEMG signal acquisition module, the system processing module and stimulator module has the function of detection spontaneous and evoking EMG, and processing and analyzing the extracted eigenvalue by using the methods of time domain analysis and frequency domain analysis. This paper designs the ARM core detection system, and processes the collected signal by combing analog filters and digital filters in order to achieve suppression of noise and interference, so as to obtain the effective SEMG. ARM processor reduces power consumption and improves the system performance and reliability. The results of experiments show that the system can extract the spontaneous EMG of the effective range, has the function of detection evoked EMG. © (2012) Trans Tech Publications.


Hao Y.-M.,Baicheng Normal College
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

The title Schiff base compound, C8H7ClN 4O2S, was prepared by the reaction of equimolar quanti-ties of 2-chloro-5-nitro-benzaldehyde with thio-semicarbazide in methanol. The molecule adopts a trans configuration with respect to the azomethine group and the dihedral angle between the benzene ring and the thio-semicarbazide group is 6.8 (3)°. In the crystal, molecules are linked through inter-molecular N - H⋯S hydrogen bonds, forming chains propagating in [010].


Zhu Y.,Baicheng Normal College
Acta Crystallographica Section E: Structure Reports Online | Year: 2010

In the title mononuclear copper(II) complex, [Cu(C12H 17N2O2)(NCS)], the CuII atom is four-coordinated by an NNO-donor set of the tridentate Schiff base ligand and the N atom of a terminal thio-cyanate ligand in a slightly distorted square-planar geometry.


Three novel 1:2 composite compounds prepared with the isopolyanions and lanthanide-organic units, (NH4)2{[Ln2(HL)2(H2O)9][(H2W12O40)]}·nH2O (Ln = Gd3+ (1), Tb3+ (2), n = 15; Ho3+ (3), n = 10; L = pyridine-3,5-dicarboxylate) were synthesized at room temperature and characterized by routine methods. X-ray structural analysis reveals that these structures are isomorphic: two crystallographically independent Ln3+ ions (Ln1 and Ln2) locate in different coordination environments; two ligands plays dissimilar coordination mode; the isopolyanion cluster acts as a tridentate ligand and connects three Ln3+ ions (Ln1, Ln1′ and Ln2) forming an unusual 2D undee-layer. The room temperature luminescent of 2 has been studied and exhibits a Tb3+ characteristic emission in the range of 450-650 nm. © 2011 Springer Science+Business Media, LLC.


Wang G.,Baicheng Normal College
Computer-Aided Design and Applications | Year: 2016

In this thesis, a new centrifugal ice breaking and snow removal system is designed to solve the problems of ice and snow removal machines, such as low efficiency, poor pavement protection ability and high cost. This system is composed of centrifugal ice breaking unit, drive unit, adaptive unit, walking unit and ice shovel and snow removal unit. This system uses the rotation trundle to drive the rotation of the ice breaking hammer jointed by the hinge and the ice layer will be scrapped after the kinetic energy of the ice breaking hammer reaches the critical damage the ice breaking needs so as to attain the goal of ice breaking; it uses the rotate mode to load the round brush or rolling shovel to remove ice and snow. Different functions can be realized through shifting function keys. During the design process, the ADAMS software is used to make the 3D simulation model and the data acquired through simulation are used to optimize the structure design in order to improve the efficiency and quality of system design. © 2016 CAD Solutions, LLC


Wei Z.,Baicheng Normal College
2011 International Conference on Electronics, Communications and Control, ICECC 2011 - Proceedings | Year: 2011

One of the difficulties of exchange of isomerism database is to resolve the problem of data transmission between databases with different structure. Extensible markup language (XML) is described by the format which is unrelated to platform, language and protocol. It can resolve format problem in data exchange. It provides the best data model and exchange standard for isomerism database. JMS has platform independence. It provides an optimal interface criterion for data transmission based on isomerism platform. The paper mainly expounded the format criterion of isomerism data converting. © 2011 IEEE.


Wang W.,Baicheng Normal College
Inorganic Chemistry Communications | Year: 2013

An unusual coordination compound, [Cu4(dmpz)2(mi) 2H3PMoVI 8MoV 4O40]·6H2O (dmpz = 2,3- dimethylphenazine, mi = 2-methyl-1H-imidazole) (1), has been hydrothermally synthesized and characterized by elemental analysis, IR, XPS and single crystal X-ray diffraction. Compound 1 consists of dmpz and mi organic ligands, Cu I cations and [H3PMoVI 8Mo V 4O40]4 - polyoxoanions. Interestingly, the dmpz organic ligands are from in situ reaction of 1,2-diaminobenzene (dab) and 1,2-benzenedicarboxylic acid (bdc). © 2013 Elsevier B.V.

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