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Huaian, China

Xue Q.-Y.,Nanjing Agricultural University | Xue Q.-Y.,Julius Kuhn Institute | Ding G.-C.,Julius Kuhn Institute | Li S.-M.,Nanjing Agricultural University | And 5 more authors.
Applied Microbiology and Biotechnology | Year: 2013

Bacterial wilt caused by Ralstonia solanacearum is a serious threat for agricultural production in China. Eight soil bacterial isolates with activity against R. solanacearum TM15 (biovar 3) were tested in this study for their in vitro activity towards ten genetically diverse R. solanacearum isolates from China. The results indicated that each antagonist showed remarkable differences in its ability to in vitro antagonize the ten different R. solanacearum strains. Strain XY21 (based on 16S rRNA gene sequencing affiliated to Serratia) was selected for further studies based on its in vitro antagonistic activity and its excellent rhizocompetence on tomato plants. Under greenhouse conditions XY21 mediated biocontrol of tomato wilt caused by seven different R. solanacearum strains ranged from 19 to 70 %. The establishment of XY21 and its effects on the bacterial community in the tomato rhizosphere were monitored by denaturing gradient gel electrophoresis of 16S rRNA gene fragments PCR-amplified from total community DNA. A positive correlation of the in vitro antagonistic activities of XY21 and the actual biocontrol efficacies towards seven genetically different R. solanacearum strains was found and further confirmed by the efficacy of XY21 in controlling bacterial wilt under field conditions. © 2012 Springer-Verlag. Source

Xu M.,Huaiyin Teachers College
Applied Mechanics and Materials | Year: 2013

In this paper we investigate the cycle base structure of 2-connected graphs on the projective plane and show the minimum cycle bases of 2-connected outer planar graph G in the case of ew (G) ≥5. Then give a proof about the one-one property between the minimum cycle bases and the shortest no contractible cycles. © (2013) Trans Tech Publications, Switzerland. Source

Li H.,Yanbian University | Li B.,Jilin University | Jin L.-Y.,Yanbian University | Kan Y.,Huaiyin Teachers College | Yin B.,Yanbian University
Tetrahedron | Year: 2011

A colorimetric and fluorescent cyanide probe based on 7- (trifluoroacetamino)coumarin has been prepared. This structurally simple probe displays rapid response and high selectivity for cyanide over other common anions in the aqueous solution. The sensing of cyanide was performed via the nucleophilic attack of cyanide anion to carbonyl of the probe with a 1:1 binding stoichiometry, which could be confirmed by Job's plot, 1H NMR, and MS studies. DFT/TDDFT calculations support that the fluorescence enhancement of the probe is mainly due to the ICT process improvement. The detection limit of the fluorescent assay for cyanide is as low as 0.3 μM in a rapid response of less than 30 s. Thus, the present probe should be applicable as a practical system for the monitoring of cyanide concentrations in aqueous samples. © 2011 Elsevier Ltd. All rights reserved. Source

Hu M.,Huaiyin Teachers College
Proceedings of the International Conference on E-Business and E-Government, ICEE 2010 | Year: 2010

The paper builds the subjective game model of emergency in supply chain system, and then analyzes the emergency decision-making when supplier and retailer are facing with the emergency attack. If retailer increases the wholesale and retail price differentials, it's belonging to the high-technological product with higher price and lower quantity available, or supplier possesses the abundant additional product ability, the supplier couldn't decrease the quantity available. Once the supplier has to reduce the quantity available, the retailer should rapidly start up the emergency decision-making, where it seeks for the potential supplier to reinforce the quantity available. If the quantity available coming from potential supplier is greater than the reigning supplier in the crisis state, the potential supplier and retailer will get the more marketing profit. © 2010 IEEE. Source

Zhao P.,Qingdao University of Science and Technology | Zhao P.,Huaiyin Teachers College | Zhou S.,Qingdao University of Science and Technology | Guo Z.,Qingdao University of Science and Technology | Zhu Y.,Qingdao University of Science and Technology
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2012

A 2-pyrazoline derivation of 1-phenyl-3-(4-methylphenyl)-5-(3,4-dimethyl phenyl)-2-pyrazoline has been characterized by X-ray single crystal diffraction, UV-vis and fluorescence spectroscopy. For the title compound, density functional theory (DFT) calculations of the structure and natural population atomic charge analysis have been performed at B3LYP/6-311G** level of theory. By using TD-DFT method, electron spectra of the title compound have been predicted, which suggest the B3LYP/6-311G** method can approximately simulate the electron spectra for the system presented here. Comparative studies on the title compound with 1-phenyl-3-(4-methylphenyl)-5- phenyl-2-pyrazoline indicate that introducing electron-donating groups in 5-phenyl ring of pyrazoline ring influences the peak location and intensity in electronic and fluorescence spectra. © 2012 Elsevier B.V. All rights reserved. Source

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