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Siping, China

Jilin Normal University is a university in Siping, Jilin, northeast China.It was formerly known as the Siping Normal Institute .It is a very important and major normal university in Jilin Province, Northeast of China.This university was founded in the year of 1958. It is Jilin provincial teachers training center and it has trained more than 2,2000 teachers in recent years via various types of seminars and classes. From foundation up to the present, this school has cultivated more than 80,000 all kinds of talents for the nation.Jilin Normal University covers more than 920,000 square metres totally and its building area covers more than 500,000 square meters. The campus environment is extremely good with advanced basic teaching facilities. It has 22 colleges, 2 teaching sections, 27 research institutions and 117 labs now. Its teaching staff contains 1493 persons, wherein 994 persons are full-time teachers. There are 10 doctorate tutors, 230 master degree tutors, 212 professors and 210 associate professors teaching 55 undergraduate majors in this school now. For more information, please visit http://www.jlnu.edu.cn the website.We the member of Jilin Normal University welcome friends and students from all over the world. Wikipedia.

Sun Y.M.,Jilin Normal University
Journal of Alloys and Compounds | Year: 2011

Multicomponent Fe68-xNixZr15Nb 5B12 (x = 5, 10, 15, 20) alloy powders milled for 60 h were prepared by mechanical alloying (MA). The structure and crystallization behavior were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential thermal analysis (DTA). Ni enhances the amorphisation of alloy powders. Particle size increases with increasing Ni content. Both onset crystallization temperature Tx and the first crystallization peak temperature Tp of the four alloys shift to a higher temperature with increasing heating rate while melting temperature (Tm) is just the opposite. Fe68-xNixZr 15Nb5B12 (x = 5, 10, 15, 20) alloys all have a large supercooled liquid region ΔTx. The supercooled liquid region ΔTx increases and the crystallization activation energy E decreases with increasing Ni content. © 2010 Elsevier B.V. All rights reserved. Source

ABSTRACT: The mechanism of cleft palate induction by dexamethasone is not fully known. Bone morphogenetic protein-2 (BMP-2) has been associated with dexamethasone-induced osteoporosis. In this study, the authors induced cleft palate models in Institute of Cancer Research mice by dexamethasone to investigate the role of BMP-2 and its transcriptional element GATA-6. The authors injected different doses of dexamethasone into pregnant mice (E13), and assessed the histology of the palatal shelf and the expression levels of BMP-2, GATA-6, and specific apoptosis-related proteins. The results showed that cleft palate formation was dependent on dexamethasone dosage, with high incidence (50.55%) at high concentration (50?mg/kg) compared with the low doses (6?mg/kg, 38.10%). Transmission electron microscopy revealed significant cellular changes of the cleft palate shelf, including loose cell connection, cellular swelling, as well as reduced extracellular matrix and mitochondria. Following exposure to dexamethasone, the apoptotic rate in the palate increased with elevated dosage. Western blotting analysis indicated that the expression levels of GATA-6 and BMP-2 were reduced, while the levels of apoptotic proteins bax and caspase-3 were increased. The results of authors’ study suggested that dexamethasone-induced cleft palate formation involved apoptosis occurred in a dose-dependent manner. BMP-2 and GATA-6 mediated dexamethasone-induced cleft palate formation. © 2016 by Mutaz B. Habal, MD. Source

Liu B.,Northeast Normal University | Liu B.,Jilin Normal University | Yang J.,Northeast Normal University | Yang G.-C.,Changchun University of Technology | Ma J.-F.,Northeast Normal University
Inorganic Chemistry | Year: 2013

Four novel polyoxometalate-based copper(I)-organic frameworks, namely, [CuI 2(cis-L1)2][CuI 2(trans-L1)2Mo6O18(O 3AsPh)2] (1), [CuI 4(L2) 4Mo6O18(O3AsPh)2] (2), [CuI 4(L3)4Mo6O18(O 3AsPh)2] (3), and [CuI 4(L4) 2Mo6O18(O3AsPh)2] (4) (L1 = 1,3-bis(1,2,4-triazol-1-yl)propane, L2 = 1,4-bis(1,2,4-triazol-1-yl)butane, L3 = 1,5-bis(1,2,4-triazol-1-yl)pentane, and L4 = 1,6-bis(1,2,4-triazol-1-yl) hexane), have been successfully synthesized under hydrothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, infrared spectra (IR), UV-vis spectra, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Compound 1 is composed of two crystallographically independent and distinct polymeric motifs: one-dimensional (1D) S-shaped chain and two-dimensional (2D) undulated layer. The S-shaped chains penetrated into the 2D parallel layers to generate an unusual 1D + 2D → three-dimensional (3D) polypseudo-rotaxane framework. In 2, the As2Mo6 polyoxoanions in tetradentate modes link four neighboring -L2-Cu-L2- chains to produce a rare 3D trinodal (3,4)-connected self-penetrated framework with Point Symbol of (8 3)2(82·124). In 3, adjacent CuI atoms are linked by As2Mo6 polyoxoanions and L3 ligands into a 2D layer. The layers are further interlocked by the two nearest neighboring ones to form a 3D polycatenated framework. In 4, L4 ligands bridge four CuI atoms to yield 2D wavelike layers, which are further linked by the octadentate As2Mo6 polyoxoanions to form a 3D tetranodal (3,4,6)-connected framework with Point Symbol of (6 3)(4·63·82)(64· 82)(42·62·810· 10). In addition, the photocatalytic activities of compounds 1, 3, and 4 for decomposition of methylene blue (MB) under UV light have been investigated. Moreover, their electrochemical properties have also been studied in 1 M H 2SO4 aqueous solution. © 2012 American Chemical Society. Source

Wei L.,Jilin Normal University | Hanning C.,CAS Shenyang Institute of Automation
International Journal of Advancements in Computing Technology | Year: 2012

The Artificial Bee Colony (ABC) algorithm recently gained high popularity by providing a robust and efficient approach for solving continuous optimization problems. In order to apply ABC in discrete landscape, a binary version of artificial bee colony (BABC) algorithm is proposed in this manuscript. Unlike the original ABC algorithm, the proposed BABC represents a food source as a discrete binary variable and applies discrete operators to change the foraging trajectories of the employed bees, onlookers and scouts in the probability that a coordinate will take on a zero or one value. With four mathematical benchmark functions, BABC is proved to have significantly better performance than the other two successful discrete optimizer, namely the genetic algorithm (GA) and particle swarm optimization (PSO). Source

Chang L.,Jilin Normal University | Chen S.,Jilin Normal University | Li X.,Harbin Institute of Technology
Applied Surface Science | Year: 2012

A general fabricating protocol for the preparation of core-shell magnetic molecularly imprinted polymers (MIPs) for chlorinated phenols recognition is described. In this protocol, Fe 3O 4 magnetic nanoparticles were first prepared using the chemical co-precipitation method. Then, the obtained magnetic nanoparticles were coated with a silica shell through modified Stöber method. Finally, MIP films were coated onto the surface of silica-modified magnetic nanoparticles by surface molecular imprinting technique. The resultant polymers showed a high saturation magnetization value (31.350 emu g -1), and short response time (30 s). Meanwhile, the as-synthesized magnetic MIPs showed an excellent recognition and selection properties toward imprinted molecule over structurally related compounds. © 2012 Elsevier B.V. Source

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