Lu M.,Zaozhuang College |
Zhang D.-M.,Zaozhuang College |
Wang J.,Zaozhuang College
IOP Conference Series: Earth and Environmental Science | Year: 2017
In this paper, the sand stone concrete was studied on 0%, 2%, 4%, and 6% of stone powder content through experiment. It reports a study on the factors affecting the properties of sand stone concrete include the microstructure, mass loss and compressive strength after freeze-thaw cycles of 0,5,10,15,20,25,30,35,40. The results show that it can improve frost resistance of sand stone concrete with proper amount of stone powder. It can provide experimental basis for good performance of sand stone concrete. © Published under licence by IOP Publishing Ltd.
Yang H.,Shandong University of Science and Technology |
Dong H.,Shandong University of Science and Technology |
Yin B.,CAS Qingdao Institute of Oceanology |
Yin B.,Chinese Academy of Sciences |
Liu Z.,Zaozhuang College
Advances in Mathematical Physics | Year: 2012
Based on a well-known Lie algebra, the multicomponent Guo hierarchy with self-consistent sources is proposed. With the help of a set of non-semisimple Lie algebra, the nonlinear bi-integrable couplings of the multicomponent Guo hierarchy with self-consistent sources are obtained. It enriches the content of the integrable couplings of hierarchies with self-consistent sources. Finally, the Hamiltonian structures are worked out by employing the variational identity. © 2012 Hongwei Yang et al.
Li S.,Hangzhou Normal University |
Li S.,University of Utah |
Huang J.,University of Utah |
Huang J.,Zhejiang GongShang University |
And 9 more authors.
Journal of the American Chemical Society | Year: 2014
The formation of catenated systems can be simplified greatly if one or more rings are generated via self-assembly. Herein we exploit the orthogonality of coordination-driven self-assembly and crown-ether host-guest complexation to obtain a molecular necklace and a molecular necklace based on a well-developed recognition motif of 1,2-bis(pyridinium)ethane/dibenzocrown- 8. By adapting the bis(pyridinium) motif into the backbone of a donor building block, the resulting semirigid dipyridyl species can serve both as a structural element in the formation of metallacycles and as a site for subsequent host-guest chemistry. The pseudolinear nature of the donor precursor lends itself to the formation of triangular and hexagonal central metallacycles based on the complementary acceptor unit used. This exemplary system organizes up to 18 molecules from three unique species in solution to afford a single supramolecular ensemble. © 2014 American Chemical Society.
Wang D.,Zaozhuang College |
Li X.,Shanxi University
Energy Education Science and Technology Part A: Energy Science and Research | Year: 2012
According to the characteristics of soil erosion, with the support of geographical information system (GIS), the author use the method of soil erosion factor weight evaluation to achieve a assessment study of the potential risk of soil erosion. First of all, the author defined the impact factor on soil erosion and set up the index model; Second, the extraction methods of impact factor was discussed in the paper; according to soil erosion assessment standard promulgated by MWR (Ministry of Water Resources), the soil erosion risk was divided into 5 levels; finally, in order to show the size of the soil erosion risk of the area, the author put forward the soil erosion risk index. To Zaozhuang, for example, by comprehensive considering the four elements--terrain slope, the vegetation coverage, the underlying surface attribute and the soil type, the author studied the risk assessment of the soil erosion and spatial distribution characteristics in this region. The analysis and evaluation results can be meaning for the prevention and control of soil erosion, environmental protection,ecological maintaining and the rational development and utilization of land resources in Zaozhuang to provide a scientific basis in the future. © Sila Science. All Rights Reserved.
Wang D.,Zaozhuang College |
Wang M.,Zaozhuang College |
Liu J.,Northeast Agricultural University
2011 International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2011 - Proceedings | Year: 2011
Based on remote sensing and ecological survey data, paper selected eight categories of typical ecological factors, defined the grades and weight of their impact on the ecological environment, and assessed the ecological sensitivity of Taierzhuang with GIS technology and weighted superposition method. Ecology sensitivity of land was divided into five categories through fuzzy clustering and consolidation of small area polygons. The results showed that extremely sensitive area accounted for 15.54%, highly sensitive area accounted for 8.5%, moderately sensitive area accounted for 21.63%, light sensitive area accounted for 51.02% and non-sensitive area accounted for 11.82%. The ecology sensitivity in Taierzhuang totally was low. © 2011 IEEE.
PubMed | Yangzhou University and Zaozhuang College
Type: Journal Article | Journal: Journal of veterinary science | Year: 2016
Gap junctions mediate direct communication between cells; however, toxicological cascade triggered by nonessential metals can abrogate cellular signaling mediated by gap junctions. Although cadmium (Cd) is known to induce apoptosis in organs and tissues, the mechanisms that underlie gap junction activity in Cd-induced apoptosis in BRL 3A rat liver cells has yet to be established. In this study, we showed that Cd treatment decreased the cell index (a measure of cellular electrical impedance) in BRL 3A cells. Mechanistically, we found that Cd exposure decreased expression of connexin 43 (Cx43), increased expression of p-Cx43 and elevated intracellular free Ca(2+) concentration, corresponding to a decrease in gap junctional intercellular communication. Gap junction blockage pretreatment with 18-glycyrrhizic acid (GA) promoted Cd-induced apoptosis, involving changes in expression of Bax, Bcl-2, caspase-3 and the mitochondrial transmembrane electrical potential (m). Additionally, GA was found to enhance ERK and p38 activation during Cd-induced activation of mitogen-activated protein kinases, but had no significant effect on JNK activation. Our results indicated the apoptosis-related proteins and the ERK and p38 signaling pathways may participate in gap junction blockage promoting Cd-induced apoptosis in BRL 3A cells.
Qi H.H.,Zaozhuang College |
Chen J.,Lanzhou University of Technology |
Chen N.L.,Lanzhou University of Technology |
Feng H.X.,Lanzhou University of Technology |
Qiu J.H.,Akita Prefectural University
Advanced Materials Research | Year: 2014
In this paper, the preparation of PANI was investigated via in secondary doping in-situ chemical oxidation polymerization. We use NH2SO3H as dopant, and HP3O4, H2SO4 or HCl as secondary dopant, respectively. The influencing of products conductivity was discussed about difference secondary dopant with changing concentration. The synthesized polymer composites are characterized by Fourier Transform Infrared Spectroscopy (FTIR) and four probe conductivity apparatus. The results show that in redoping process, the conductivity of PANI was 3.1746 S/cm when the concentration of HCl was 1.0 mol/L. Meanwhile, the thermal stability of PANI prepared with HP3O4 or H2SO4 as secondary dopant was better than HCl as secondary dopant. © (2014) Trans Tech Publications, Switzerland.
Zhang D.M.,Zaozhuang College |
Lu M.S.,Zaozhuang College
Applied Mechanics and Materials | Year: 2013
The effects of the different content of cement-sand ratio,fineness modulus of sand, heavy calcium carbonate and high alumina cement on the self-leveling mortar was studied according to orthogonal experiment.The results show that when cement-sand ratio is 1.33, fineness modulus of sand is 2.2, heavy alumina is 20%, alumina cement is 10%, the mix amount of mortar is optimum. It can get a good performance of self-leveling mortar. © (2013) Trans Tech Publications, Switzerland.
Bai D.,Zaozhuang College |
Zhang X.-L.,Zaozhuang College |
Wu J.,Zaozhuang College |
Li H.-Q.,Zaozhuang College |
And 2 more authors.
Huaxue Gongcheng/Chemical Engineering (China) | Year: 2015
Various zinc salts were used as the catalysts for the synthesis of propylene carbonate (PC) from urea and 1,2-propylene glycerol (PG). Among these catalysts, ZnCl2 presented the best catalytic performance. Besides, the effects of reaction conditions such as reaction temperature, reaction time and catalyst amounts on catalytic performance were explored over ZnCl2 as the model catalyst in the present work. It indicates that under the optimal reaction conditions of urea 3.0 g, PG 7.62 g, reaction temperature 170 ℃, reaction time 3 h, catalyst amount 0.4 g, PC yield can reach 82.9%. FTIR characterization further reveals that the catalytic performances of these catalysts are related to their abilities of activation of urea decomposition into isocyanic acid. Some intermediate species are formed from interact of isocyanic acid and catalyst. PC is finally produced by PG reaction with these active species. In addition, a possible reaction mechanism was proposed on the basis of catalytic test and characterization results. ©, 2015, Editorial Office of Chemical Engineering (China). All right reserved.
Wang W.J.,Zaozhuang College
Applied Mechanics and Materials | Year: 2014
Tourism e-commerce, a main trend of Chinese tourism development, provides tourists with more personalized and humanized service. Female groups are an essential part of tourism e-commerce markets. Besides, females have their unique characteristics in tourism e-commerce consumption. This paper studies consumption characteristics of females of different ages in tourism e-commerce by subdividing female tourism e-commerce market. In addition, it proposes several measures to innovate in female tourism e-commerce products, provide a security system for tourism e-commerce and perfect female tourism e-commerce customer relationship management, as well as do well in female tourism e-commerce product marketing. © (2014) Trans Tech Publications, Switzerland.