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Search Results: 1 - 10 of 4149 matches for " Yabin Zhan "
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Bioremediation of Oil Contaminated Soil  [PDF]
Yabin Zhan, Xingling Tao, Li-An Ma, Tao Jiang
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104305
Abstract:
Objective: In order to study the microbial remediation of oil contaminated soil. Methods: The method of soil composting was adopted. G-40, G-94 and G-40 G-94 were added into the soil with 2% oil, adding 20% bran and adding distilled water to keep the soil water content in 35%, and it was incubated at 35℃. After sampled, the alkali hydrolysable nitrogen, available phosphorus and oil content were measured. Result: The oil removal rates of G-40, G-94 and G-40 G-94 treatment groups were 29.08%, 31.09% and 32.68% on 100th day, respectively. Conclusion: This study provides a reference for microbial remediation of petroleum contaminated soil.
Identification of Petroleum Degrading Bacteria and Construction of Petroleum Degrading Agent  [PDF]
Xingling Tao, Yabin Zhan, Tao Jiang, Chuanjiong Hu
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105335
Abstract:
The aim of this study is to construct petroleum degrading agent (PDA) which can effectively degrade oil. By enrichment, domestication, and separation of culture from the soil sample of Qianjiang Guanghua Oilfield, the pure culture of three petroleum degrading bacteria G-40, G-53, and G-94 was identified from the medium supplemented with oil, which served as the sole source of carbon. The species of G-40 and G-53 were preliminarily identified and classified by morphological observation, physiological and biochemical determination, and sequence analyses of 16S rDNA. The species of G-94 was preliminarily identified and classified by morphological observation, physiological and biochemical determination, and sequence analyses of ITS rDNA. The optimal inoculation proportion of these three bacteria strains and bran proportion in composition of PDA were determined through orthogonal test. G-40, G-53, and G-94 were isolated and identified as Brevibacillus laterosporus, Tsukamurella inchonensis, and Candida tropicalis, respectively. To construct petroleum degrading agent, the optimum inoculation proportion of the three bacteria strains was A1B3C3 (G-40:G-53:G-94 = 1:4:4); and the optimum proportion of bran was D1E1F2 (soybean meal:corn flour:bran = 1:1:2). The oil removal rate of the constructed petroleum degrading agent reached to 42.32% on day 10 under the optimal proportion of bacteria inoculation and bran composition. Petroleum degrading bacteria can effectively degrade petroleum for its own growth. This study identified three petroleum degrading bacteria strains and proposed a petroleum degrading agent by studying the optimal inoculation proportion of the three bacterial strains and the accompanying bran. Our research could provide potential microbial resources for bioremediation of petroleum-contaminated soil.
Isolation, Identification and Degradation Characteristics of Oil Degrading Bacterial Strain  [PDF]
Yabin Zhan, Xingling Tao, Shanwen He, Shufen Song, Jingjing Xing, Fangmin Li, Tao Jiang, Lian Ma
Open Access Library Journal (OALib Journal) , 2017, DOI: 10.4236/oalib.1104016
Abstract:
Objective: The aim of study is to obtain a strain which can effectively degrade oil. Methods: By enrichment, domestication and separation of culture from the sample which comes from Qianjiang Guanghua Oilfield, the pure culture (G-40) was selected from the medium supplemented with oil as the sole source of carbon. The G-40 was preliminarily identified and classified by morphological observation, physiological and biochemical determination and sequence analyses of 16S rDNA. Effects of temperature, pH, oil concentration, salt concentration, inoculation amount, N and P source on the degradation of the oil were studied by single factor test. Meanwhile, the effects of temperature, pH, oil concentration and salt concentration were optimized by orthogonal design. Result: G-40 was isolated and identified as Brevibacillus laterosporus. The orthogonal design showed that the degradation rate of oil could reach 20.81%, 24.34% and 31.15% at 10 d, 20 d and 40 d under the optimal conditions which was 35℃, initial pH 7.3, oil concentration 0.6%, salt concentration 0.5%, inoculum amount 8%, the optimal N and P was (NH4)2SO4 and K2HPO4. Conclusion: This study provides microbial resources for bioremediation of petroleum contaminated soil.
Predication and Optimization of Maintenance Resources for Weapon System
Yabin Wang
International Journal of Intelligent Systems and Applications , 2011,
Abstract: Maintenance resources are important part of the maintenance support system. The whole efficiency of weapon system is directly affected by the allocation of maintenance resources. Joint support for weapon system of multi-kinds of equipments is the main fashion of maintenance support in the future. However, there is a lack of the efficiency tools and methods for predication and optimization of weapon system maintenance resources presently. For the prediction requirement of maintenance resources of weapon system, the primary infection factors for the requirement of maintenance resources were analyzed. According to the different characteristics of maintenance resources and the analysis for the traditional classification methods, a kind of classification for weapon system’s maintenance resources was given. A prediction flow for the maintenance resources requirement was designed. Four kinds of models for predicting the maintenance resources requirement in a weapon system were designed and described in detail. In this paper, approaches of the optimal selection from the simulation schemes and reverse simulation for the resources allocation optimization were analyzed; some optimization models for maintenance resources such as spare parts and personnel were constructed. Further more, an optimization and decision-making system was not only designed but also developed. At last, an example was presented, which proved the prediction and optimization methods were applicability and feasibility, the decision-making system for the optimization of maintenance resources was a supportable and efficient tool.
International Technology Spillover, Energy Consumption and CO2 Emissions in China  [PDF]
Rihui Lei, Yabin Zhang, Sichao Wei
Low Carbon Economy (LCE) , 2012, DOI: 10.4236/lce.2012.33007
Abstract: Based on autoregressive distributed lag model, we empirically study the interrelationship between international technology spillover, energy consumption and CO2 emissions by using time series data covering the period 1960-2008. The results show that international technology spillover, technology transformation and domestic R&D input cut down CO2 emissions. R&D input has both direct and indirect effect on the reduction in CO2 emissions. On the one hand, R&D input promotes domestic innovation and accelerates transformation, absorption and utilization of the technology from forerunners. On the other hand, R&D input reduces CO2 emissions by rising energy efficiency. Energy consumption increases CO2 emissions.
The Harmonic Functions on a Complete Asymptotic Flat Riemannian Manifold  [PDF]
Huashui Zhan
Advances in Pure Mathematics (APM) , 2011, DOI: 10.4236/apm.2011.12003
Abstract: Let be a simply connected complete Riemannian manifold with dimension n≥3 . Suppose that the sectional curvature satisfies , where p is distance function from a base point of M, a, b are constants and . Then there exist harmonic functions on M .
The Manifolds with Ricci Curvature Decay to Zero  [PDF]
Huashui Zhan
Advances in Pure Mathematics (APM) , 2012, DOI: 10.4236/apm.2012.21008
Abstract: The paper quotes the concept of Ricci curvature decay to zero. Base on this new concept, by modifying the proof of the canonical Cheeger-Gromoll Splitting Theorem, the paper proves that for a complete non-compact Riemannian manifold M with Ricci curvature decay to zero, if there is a line in M, then the isometrically splitting M = R × N is true.
RETRACTED: Local Discrimination of Quantum Measurement without Assistance of Classical Information  [PDF]
Youbang Zhan
Journal of Quantum Information Science (JQIS) , 2015, DOI: 10.4236/jqis.2015.52009
Abstract: Short Retraction Notice

There are some computational errors in this paper.

This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused.

Please see the article page for more details. The full retraction notice in PDF is preceding the original paper which is marked \"RETRACTED\".

Study of Influencing Factors and the Mechanism of Preparing Triazinedithiol Polymeric Nanofilms on Aluminum Surfaces
Fang Wang,Yabin Wang,Yanni Li
International Journal of Molecular Sciences , 2010, DOI: 10.3390/ijms11114715
Abstract: Triazinedithiol polymeric nanofilm was prepared on a pure aluminum surface by electrochemical polymerization of AF17N. The mechanism of the process was proposed and electrochemical polymerization parameters were investigated. The triazinedithiol polymeric nanofilm had notable lubricity, high dielectric property and superhydrophobic property due to the allyl and fluoro alkyl groups in the AF17N monomer. The chemical structure of poly (6-( N-allyl-1,1,2,2-tetrahydroperfluorodecyl)amino-1,3,5-triazine-2,4-dithiol monosodium) nanofilm (PAF17) was investigated by analysis of FT-IR spectra and X-ray photoelectron spectroscopy (XPS). The optimal conditions for the preparation process were based on the data of film weight and thickness. The optimal parameters of monomer concentration, electropolymerization time and temperature were 5?mM, 6?min and 15?°C, respectively. The electropolymerization mechanism was a radical polymerization reaction. It is expected that this technique will be applied in industrial fields for aluminum and aluminum alloy to achieve functional surfaces.
Poly[[diaquabis{μ-4-[6-(4-carboxyphenyl)-4,4′-bipyridin-2-yl]benzoato-κ2O:N1′}copper(II)] dimethylformamide tetrasolvate]
Yabin Sun,E Song,Daguang Wang
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536813006430
Abstract: In the title compound, {[Cu(C24H15N2O4)2(H2O)2]·4C3H7NO}n, the CuII ion, lying on an inversion center, is six-coordinated by two N atoms from two 4-[6-(4-carboxyphenyl)-4,4′-bipyridin-2-yl]benzoate (L) ligands, two deprotonated carboxylate O atoms from two other symmetry-related L ligands and two water molecules in a slightly distorted octahedral geometry. The CuII atoms are linked by the bridging ligands into a layer parallel to (101). The presence of intralayer O—H...O hydrogen bonds and π–π interactions between the pyridine and benzene rings [centroid–centroid distances = 3.808 (2) and 3.927 (2) ] stabilizes the layer. Further O—H...O hydrogen bonds link the layers and the dimethylformamide solvent molecules.
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