期刊：
Journal of Nuclear Materials,2014年453(1-3):82-90 ISSN：0022-3115
通讯作者：
Yuan, Yali
作者机构：
[Gao, Yangyang; Tao, Wei; Yuan, Yali; Xu, Wenhui; Li, Yuhui; Ma, Dandan] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Li, Le] Univ South China, Dept Publ Hlth, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Yuan, Yali] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
摘要：
Magnetic carboxymethylcellulose (CMC/Fe3O4) was used as a framework adsorption material to remove uranium ions from aqueous solutions. Carboxyl functional groups were grafted onto the CMC/Fe3O4. The maximum adsorption capacity of the magnetic composite toward U(VI) was 122.48 mg/g. Kinetic and thermodynamic parameters of the adsorption process were estimated. The pseudo-second-order model was more suitable and it proved to be an endothermic and spontaneous process. The Langmuir and Freundlich models were applied to evaluate the adsorption isotherm. The data matched well with Langmuir model after equilibrium was reached and with Freundlich model before equilibrium was reached.
期刊：
WIT Transactions on Biomedicine and Health,2014年18:723-730 ISSN：1743-3525
作者机构：
[He, Shuya; Cao, Yunchang; Wen, Hongbo; Zheng, Jifang; Li, Huanzheng] Department of Biochemistry and Molecular Biology, University of South China, China
会议名称：
International conference on Human Health and Medical Engineering
期刊：
Journal of Chemical and Pharmaceutical Research,2014年6(6):1412-1417 ISSN：0975-7384
通讯作者：
Yang, Peng-Fei
作者机构：
[Yang, Peng-Fei] School of Chemical Engineering, University of South China, Hengyang, Hunan, China;[Wang, Hong-Li; Zhou, Ji-Cheng] School of Chemical Engineering, Xiangtan University, Xiangtan, Hunan, China
摘要：
Rational protein design is a powerful strategy,not only for revealing the structure and function relationship of natural metalloproteins,but also for creating artificial metalloproteins with improved properties and functions.Myoglobin（Mb）,a small heme protein created by nature with diverse functions,has been shown to be an ideal scaffold for rational protein design.The progress reviewed herein includes fine-tuning its native functions of O2binding and transport,peroxidase activity and nitrite reductase（NIR）activity,and rational expanding its functionalities to peroxygenase,heme-copper oxidase（HCO）,nitric oxide reductase（NOR）,as well as hydroxylamine reductase.These studies have enhanced our understanding of how metalloproteins work in nature,and provided insights for rational design of functional metalloproteins for practical applications in the future.
期刊：
JOURNAL OF AOAC INTERNATIONAL,2014年97(1):121-127 ISSN：1060-3271
通讯作者：
Deng, Jian
作者机构：
[Wang, Lili; Yan, Xiaona; Xie, Jie; Chen, Dan; Deng, Jian; Ji, Xuezhen; Liang, Jun] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Liu, Wanbin] Henan Pingdingshan Qual & Technol Inspect, Pingdingshan 467000, Henan, Peoples R China.
通讯机构：
[Deng, Jian] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
摘要：
A novel derivative β-cyclodextrin (β-CD) bonded silica gel (β-CD/SiO2) was prepared via carbodiimide activation and used as a chiral stationary phase (CSP). The β-CD/SiO2 CSP was characterized by X-ray photoelectron spectroscopy and FTIR spectroscopy to prove the successful immobilization of β-CD onto the surface of the silica gel. The thermal behavior of the CSP was studied by differential scanning calorimetry and then used for the chiral separation of racemic naproxen using HPLC. Several factors affecting the separation efficiency of naproxen enantiomers were investigated systematically. The following parameters were selected: methanol–0.01 M phosphate buffer solution (85 + 15, v/v, pH 3.5) was the mobile phase, the flow rate was 1.0 mL/min, and the column temperature was 35°C. Under optimal conditions, the racemic naproxen was efficiently separated with a resolution factor (R S) of 1.70 and a separation factor (α) of 1.25. This method was successfully used for the enantiomeric separation and purity assessment of naproxen in commercial naproxen sustained release tablets.
摘要：
Fusarium sp. #ZZF51, marine-derived mangrove endophytic fungus, was chemically modified by poly(amic acid) to enhance its potential of uranium(VI) biosorption in aqueous solution. Compared with uranium(VI) removal of the pristine biomass, the maximum uranium(VI) adsorption capacity of the modified biomass increased 9.5-fold under the optimal condition of pH 5.0, S/L 0.4, and equilibrium time 180 min. Kinetic study showed that the process follows the pseudo-second-order kinetic model, which indicates that chemical reaction controls the adsorption rate. The thermodynamic experimental data fit well with Langumir, Freundlich, and Temkin isotherms, and their R 2 values are 0.954, 0.963, and 0.986, respectively. FTIR spectroscopic analysis of the native, modified, and uranium-loaded biomass demonstrated the involvement of carboxyl, amide, and hydroxyl groups on the surface of fungus Fusarium sp. #ZZF51 cell wall in the adsorption of uranium(VI).
摘要：
A novel highly sensitive and specific electrochemical biosensor for detecting uranium based on specific Deoxyribozymes and gold nanoparticles (AuNPs) is reported. In this work, AuNPs provide excellent electrochemical signal transduction and a large surface area for immobilising numerous Deoxyribozymes, so a low detection limit of 3.24ngL(-1) uranium and a good linear relationship over the range 5.94-35.1ngL(-1) (r=0.994) were obtained. The proposed biosensor presents high specificity and selectivity for uranium and is not affected by other metal ions. Thus, the biosensor protocol offers good selectivity, rapid speed and operational convenience for detection uranium in liquid waste.
摘要：
Sphere-shaped and monodispersed copper nanoparticle-coated poly(styrene-co-sulfonic acid) (Cu/PS) hybrid nanomaterials had been successfully synthesized by a green and facile synthesis method, in which chlorosulfonic acid and glucose were used as a sulfonating agent of polymer beads and a reducing agent. SEM and X.RD measurements revealed that the Cu/PS hybrid materials were successfully acquired. Moreover, the size and shape of Cu nanoparticles of the Cu/PS hybrid materials (i.e., Cu/PS-1, Cu/PS-2 and Cu/PS-3 hybrid materials) depended on the sulfonating agent and reducing agent concentrations. The results revealed that the Cu nanoparticles and PS spheres of the Cu/PS-3 hybrid materials had the average diameters of ca. 10 and 120 nm, respectively. Moreover, the Cu/PS-3 displayed excellent antibacterial properties such as relatively low minimal inhibitory concentrations (MICs) against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). (C) 2014 Elsevier B.V. All rights reserved.
作者机构：
School of Chemistry and Chemical Engineering, University of South China, Hengyang;421001, China;[王孟; 廖云] School of Chemistry and Chemical Engineering, University of South China, Hengyang ;[王孟; 廖云] 421001, China
通讯机构：
[Wang, M.] S;School of Chemistry and Chemical Engineering, University of South China, Hengyang, China
摘要：
Polyurethane elastomers exhibit inelastic effects under cyclic deformation, including stress softening, hysteresis and permanent set. In this paper, we present a new method for characterization of the inelastic behavior by infrared thermography. Two salient inelastic features of temperature change for elastic fibers have been observed: (1) temperature variation is partly reversible in the first cycle and totally reversible in the following cycles, (2) temperature variation is strongly dependent on strain rate during the first loading process and less dependent on strain rate during the second loading process. The new method for inelastic behavior, compared with traditional mechanical measure, is an online and synchronization technology. (C) 2014 Elsevier Ltd. All rights reserved.
作者机构：
[周彦同; 夏良树; 肖益群; 付万发] School of Nuclear Science and Technology, University of South China, Hengyang, China;[刘文娟; 梁欣] School of Chemistry and Chemical Engineering, University of South China, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
作者机构：
[肖益群; 周彦同; 肖静水; 彭安国; 夏良树] School of Nuclear Science and Technology, University of South China, Hengyang, China;[陈伟] School of Chemistry and Chemical Engineering, University of South China, Hengyang, China
通讯机构：
School of Nuclear Science and Technology, University of South China, Hengyang, China
