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Liu P.,Shandong University | Wang X.,U.S. Center for Disease Control and Prevention | Fan J.,Shandong Experimental High School | Xiao W.,Shandong University | Wang Y.,Shandong University
International Journal of Environmental Research and Public Health | Year: 2016

A study on the relationships between ambient air pollutants (PM2.5, SO2 and NO2) and hospital emergency room visits (ERVs) for respiratory diseases from 2013 to 2014 was performed in both urban and suburban areas of Jinan, a heavily air-polluted city in Eastern China. This research was analyzed using generalized additive models (GAM) with Poisson regression, which controls for long-time trends, the “day of the week” effect and meteorological parameters. An increase of 10 μg/m3 in PM2.5, SO2 and NO2 corresponded to a 1.4% (95% confidence interval (CI): 0.7%, 2.1%), 1.2% (95% CI: 0.5%, 1.9%), and 2.5% (95%: 0.8%, 4.2%) growth in ERVs for the urban population, respectively, and a 1.5% (95%: 0.4%, 2.6%), 0.8% (95%: -0.7%, 2.3%), and 3.1% (95%: 0.5%, 5.7%) rise in ERVs for the suburban population, respectively. It was found that females were more susceptible than males to air pollution in the urban area when the analysis was stratified by gender, and the reverse result was seen in the suburban area. Our results suggest that the increase in ERVs for respiratory illnesses is linked to the levels of air pollutants in Jinan, and there may be some urban-suburban discrepancies in health outcomes from air pollutant exposure. © 2016 by the authors; licensee MDPI, Basel, Switzerland.


Wang Y.-Y.,Shandong University | Li T.,Shandong University | Qi Y.-X.,Shandong University | Bai R.-L.,Shandong Experimental High School | And 4 more authors.
Electrochimica Acta | Year: 2015

Manganese silicate was simply fabricated by the reaction between Na2SiO3·9H2O and MnCl2·4H2O. The carbon-coated manganese silicate acting as anode material for lithium storage exhibits outstanding rate performance and high-rate cycling stability. Combining detailed characterizations with electrochemical measurements revealed that the uniform carbon coating around the manganese silicate nanoparticles as conductive material and the formation of lithium silicate as solid electrolyte are responsible for the excellent performance. The carbon-coated manganese silicate could meet the requirement for fast charging/discharging Li-ion batteries. © 2015 Elsevier B.V. All rights reserved.


Meng F.B.,Shandong Experimental High School | Hu Y.Z.,Shandong University | Yue H.Y.,Shandong University
Advanced Materials Research | Year: 2014

This research determined the proper gradation of clay brick powder, PET to clay brick powder ratio, and curing temperature. Density, compressive, and tensile strength of the PET- Brick Powder Mixture were also studied. The research results indicate that the mixture had lower density and water absorption. The strength increased quickly and reached the 94% of 28-day strength at 6 hours. The proper initial curing temperature is 180°C. © (2014) Trans Tech Publications, Switzerland.


Liu R.,Shandong Experimental High School | Hu P.,University of California at Santa Cruz | Chen S.,University of California at Santa Cruz
Applied Surface Science | Year: 2012

Heterostructures based on Ag 3PO 4 nanoparticles and TiO 2 nanobelts were prepared by a coprecipitation method. The crystalline structures were characterized by X-ray diffraction measurements. Electron microscopic studies showed that the Ag 3PO 4 nanoparticles and TiO 2 nanobelts were in intimate contact which might be exploited to facilitate charge transfer between the two semiconductor materials. In fact, the heterostructures exhibited markedly enhanced photocatalytic activity as compared with unmodified TiO 2 nanobelts or commercial TiO 2 colloids in the photodegradation of methyl orange under UV irradiation. This was accounted for by the improved efficiency of interfacial charge separation thanks to the unique alignments of their band structures. Remarkably, whereas the photocatalytic activity of the heterostructure was comparable to that of Ag 3PO 4 nanoparticles alone, the heterostructures exhibited significantly better stability and reusability in repeated tests than the Ag 3PO 4 nanoparticles. © 2012 Elsevier B.V.


Liu W.,Shandong University | Wang W.,Shandong Experimental High School | Tang K.,Shandong University | Guo J.,Shandong University | And 4 more authors.
Catalysis Science and Technology | Year: 2016

In this paper, a series of well-dispersed nickel-ceria catalysts with high surface area were successfully fabricated using a simple solvothermal approach and characterized by XRD, TEM, EDS, N2-sorption, Raman and TPR techniques. The results show that the amount of nickel species can have an impact on the morphology of the nickel-ceria catalysts, i.e. the hollow structure, particle size and porous structures. The prepared nickel-ceria samples (with the atomic ratio Ni : Ce (At% (Ni/Ce)) at approximately 6.58%) exhibit high catalytic performance in carbon monoxide (CO) oxidation with 100% conversion at 200 °C. The XRD, Raman, XPS and H2-TPR data confirm that the nickel species are the main promoting factor in the catalysis, including the doped nickel species, highly dispersed free NiO and the interfacial Ni-[O]-Ce structures. Further, the as-prepared nickel-ceria catalysts show high stability in the catalysis. © The Royal Society of Chemistry 2016.


Wang C.,Liaocheng University | Dong L.,Shandong Experimental High School | Niu M.,Liaocheng University | Liu M.,Liaocheng University | And 3 more authors.
Journal of Chemical and Engineering Data | Year: 2015

The mixing enthalpies of N,N′-hexamethylenebisacetamide (HMBA) with glycine, l-alanine, and l-serine in d-mannitol solutions with different molar fractions have been determined by means of mixing-flow isothermal microcalorimetry at 298.15 K. The heterotactic enthalpic interaction coefficients (hxy, hxxy, and hxyy), in the molar fraction (x) range of d-mannitol from (0 to 0.0159), have been calculated in terms of McMillan-Mayer theory. The trends of hxy with the molar fractions of d-mannitol have been discussed based on the interactions between solute molecules under the participation of solvent molecules. The enthalpic contribution of the functional groups of solute molecules to hxy has been estimated according to the Savage-Wood additivity group (SWAG) approach. The influence of structural difference between glucose and d-mannitol on the hxy values of HMBA with glycine has been elucidated by combining the present results with our previous work. © 2015 American Chemical Society.


Zhang L.-X.,Shandong University | Li T.,Shandong University | Bai R.-L.,Shandong Experimental High School | Qi Y.-X.,Shandong University | And 2 more authors.
New Journal of Chemistry | Year: 2016

The composite oxides of TiO2 and SnO2 (Ti-Sn-O) were fabricated by a simple precipitation method, followed by sintering at 400 °C and coating with N-doped carbon at 550 °C using pyridine as the carbon source. The carbon-coated composite with a Ti/Sn molar ratio of 1.7 : 0.3 used as anode materials for lithium ion batteries could deliver a reversible capacity of 629 mA h g-1 after cycling 300 times at a current density of 100 mA g-1, and a capacity of 289 mA h g-1 when cycling 300 times at 500 mA g-1. The outstanding cycling performance and high-rate performance result from the uniform N-doped carbon coating around the mutually dispersed TiO2 and SnO2 nanoparticles. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2016.


Tang K.,Shandong University | Zhang J.,Shandong University | Wang W.,Shandong Experimental High School | Wang S.,Shandong University | And 2 more authors.
CrystEngComm | Year: 2015

A simple protocol has been reported here to successfully perform a controllable conversion between Ce(OH)4 nanorods [Ce(OH)4-NR] and Ce(OH)4 nanoflowers [Ce(OH)4-NF] based on a prolonged mechanical force-driven stirring process. Results show that the Ce(OH)4 nanostructures undergo a morphology transformation from the initial nanorods to irregular nanoflowers, then to nanoflowers emanating from one center only, by varying the stirring time before solvothermal reaction. The detailed study confirmed that the mechanical force significantly improved the mass transport of the solution and drove the seeds of Ce(OH)4-NR [seeds-NR] to generate the seeds of Ce(OH)4-NF [seeds-NF]. The final CeO2 products (CeO2 nanorods [CeO2-NR] and CeO2 nanoflowers [CeO2-NF]) that inherited the original morphology were obtained by annealing Ce(OH)4-NR and Ce(OH)4-NF, respectively. To further optimize the performance of the final products, Au/CeO2-NR and Au/CeO2-NF were synthesized by a simple oxidation-reduction process, which led to increased surface areas and promising potential in CO oxidation. This journal is © The Royal Society of Chemistry 2015.


Zheng Y.,Liaocheng University | Dong L.-N.,Shandong Experimental High School | Liu M.,Liaocheng University | Chen A.,Liaocheng University | And 3 more authors.
Journal of Agricultural and Food Chemistry | Year: 2014

The utilization of kaempferol and its glycosides in food and pharmaceutical industries could be improved by the formation of inclusion complexes with cyclodextrins at different pH. This study explores the complexation of kaempferol-4′-glucoside with sulfobutyl ether-β-cyclodextrin (SBE-β-CD), hydroxypropyl-β-cyclodextrin (HP-β-CD), and methylated-β-cyclodextrin (M-β-CD) in phosphate buffer solutions of different pH using isothermal titration calorimetry, UV-vis absorption and proton nuclear magnetic resonance spectroscopy at 298.2 K. Experimental results showed that kaempferol-4′-glucoside binds with the three β- cyclodextrins in the same 1:1 stoichiometry. The rank order of stability constants is SBE-β-CD > HP-β-CD > M-β-CD at the same pH level and pH 6.0 > pH 7.4 > pH 9.0 for the same cyclodextrin. The binding of kaempferol-4′-glucoside with the three β-cyclodextrin derivatives is synergistically driven by enthalpy and entropy at pH 6.0 and enthalpy-driven at pH 7.4 and 9.0. The possible inclusion mode was that in the cavity of β-CD is included the planar benzopyranic-4-one part of the kaempferol-4′-glucoside. © 2013 American Chemical Society.


PubMed | Shandong Experimental High School, U.S. Center for Disease Control and Prevention and Shandong University
Type: Comparative Study | Journal: International journal of environmental research and public health | Year: 2016

A study on the relationships between ambient air pollutants (PM2.5, SO and NO) and hospital emergency room visits (ERVs) for respiratory diseases from 2013 to 2014 was performed in both urban and suburban areas of Jinan, a heavily air-polluted city in Eastern China. This research was analyzed using generalized additive models (GAM) with Poisson regression, which controls for long-time trends, the day of the week effect and meteorological parameters. An increase of 10 g/m in PM2.5, SO and NO corresponded to a 1.4% (95% confidence interval (CI): 0.7%, 2.1%), 1.2% (95% CI: 0.5%, 1.9%), and 2.5% (95%: 0.8%, 4.2%) growth in ERVs for the urban population, respectively, and a 1.5% (95%: 0.4%, 2.6%), 0.8% (95%: -0.7%, 2.3%), and 3.1% (95%: 0.5%, 5.7%) rise in ERVs for the suburban population, respectively. It was found that females were more susceptible than males to air pollution in the urban area when the analysis was stratified by gender, and the reverse result was seen in the suburban area. Our results suggest that the increase in ERVs for respiratory illnesses is linked to the levels of air pollutants in Jinan, and there may be some urban-suburban discrepancies in health outcomes from air pollutant exposure.

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