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Zibo, China

Zhang M.,Shandong University of Technology | Xin L.,Zibo Normal College
Optoelectronics and Advanced Materials, Rapid Communications | Year: 2015

BaSrZnSi2O7-Ba0.5Sr0.5TiO3 composite ceramics were systematically characterized in terms of phase composition, microstructure and dielectric properties. It was found that dielectric permittivity peaks of the samples shifted to low temperatures initially and then kept invariable with increasing BaSrZnSi2O7 content. Tunability showed a similar trend to Curie temperature. The variation in Q value was mainly related to whether the ‘doping’ effect or ‘composite’ effect was dominated. The sample with 60 wt% BaSrZnSi2O7 possessed a high tunability of 16%(~10 kHz), a low dielectric permittivity of 152 and a high Q value of 417(~2.720 GHz), making it a promising candidate for applications as electrically tunable microwave devices. © 2015, National Institute of Optoelectronics. All rights reserved. Source


Zhang X.-L.,Binzhou University | Zhang X.-L.,Qingdao University | Xiao Z.-M.,Zibo Normal College | Xu Z.-J.,State Oceanic Administration | Zhang Z.-H.,State Oceanic Administration
Wetland Science | Year: 2011

The coastal wetlands in Yellow River Delta have the characteristics of newborn property, quick evolvement, ecolgical fragility, scarcity in types and important ecological function, etc. There are 298 species vascular plants, 407 species phytoplankton, 1452 species animal, 199 species birds, 112 species marine fish, 102 species freshwater fish and 121 species other freshwater animals, 8 species repitles, 6 species amphibians, 193 species marine animals, 223 species zoobenthos in intertidal wetland and other species. In the coastal wetlands, the biodiversity characters of different wetland types are obviously different, there are most species in uptidal wetlands because of diversity and complexity of habitats there, and there are lest species in intertidal wetlands because the habitats of the intertidal wetlands are single and instable. The plant and animal flora has complicated eco-adapted types of species and regular geographical composition, the vascular plant flora is young. Many species of plant and animal are endangered and are mainly protected by government, the vascular plant flora composition is simple and the woody plant species of the flora are poor. The coastal wetlands in Yellow River Delta are facing the problems below: the acreage of natural wetland had shrunk, the wetland soil salinization is serious, the ecosystem service has degenerated, and species diversity of the wetlands has decreased. Some countermeasures are put forward to deal with these ecological problems in the paper, such as strengthening the nature reserve infrastructure constructing, restoring and rehabilitating the degraded coastal wetlands, constructing effective ecological economic zone, raising people's awareness of biodiversity conservation, strengthening basic research on coastal wetlands of Yellow River Delta. Source


Zhang M.,Shandong University of Technology | Xin L.,Zibo Normal College
International Journal of Applied Ceramic Technology | Year: 2015

The effect of ball-milling time on dielectric properties of selected ferroelectric-dielectric composites was investigated. A prolonged milling time led an increase in dielectric permittivity and a slight improvement in tunability. However, Q values of the ferroelectric-dielectric composites were deteriorated with extended ball-milling time, contrary to the general "intuitive belief" that Q values would be improved with better uniformity. The variation in dielectric properties of the ferroelectric-dielectric composites as a function of milling time was well explained in terms of transition in phase distribution mode. © 2014 The American Ceramic Society. Source


Zhang M.,Shandong University of Technology | Xin L.,Zibo Normal College
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2014

BaSrZnSi2O7 - Ba0.5Sr0.5TiO3 composite ceramics were systematically characterized in terms of phase composition, microstructure and dielectric properties. It is found that dielectric permittivity peaks of the samples shifted to low temperatures initially and then kept invariable with increasing BaSrZnSi2O7content. Tunability showed a similar trend to Curie temperature. The variety in Q value is mainly related to whether the 'doping' effect or 'composite' effect is dominated. The sample with 60wt% of BaSrZnSi2O7 possess a high tunability of 16% (10 kHz), a low dielectric permittivity of 152 and a high Q value of 417 (2.720 GHz), making it a promising candidate for applications as electrically tunable microwave devices. Source


Dong J.,Ocean University of China | Fang Y.,Ocean University of China | Guo J.,Zibo Normal College | McGunnigle G.,Carinthian Technology Research AG. Technologiepark Villach
Proceedings of the 11th IASTED International Conference on Computer Graphics and Imaging, CGIM 2010 | Year: 2010

Wang tile-based texture synthesis methods can use tiles extracted from the sample texture to create large non-periodic texture efficiently. However, these methods often produce rhombic seams in the tiles. We present a hybrid approach based on genetic and simulated annealing algorithms for texture synthesis. First, we introduce the Simulated Annealing Algorithm to compensate the Genetic Algorithm's weak ability in search of local optimization. Secondly, we extend the method to be able to use the sets of 3D surface texture representations as input, and we relight these representations to generate visual textures under different illumination conditions. Experimental results show this approach can produce visually plausible textures without rhombic seams. Source

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