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Guangzhou, China

Zhongkai University of Agriculture and Engineering, , is a university located in Guangzhou, China that specializes in training agricultural technicians. The University is named after Liao Zhongkai, a leading figure in the founding of modern China and a close associate of Sun Yat-sen. The university consists of three campuses with a total area of 1,114.7 square kilometres . Founded in 1927, Zhongkai University is one of Guangzhou’s oldest institutions of higher education. Wikipedia.

Tang Y.,Zhongkai University of Agriculture and Engineering | Tang Y.,South China University of Technology | Li G.Y.,South China University of Technology | Pan Y.C.,South China University of Technology
Materials and Design | Year: 2014

The effects of TiO2 nanoparticles addition on the microstructure, microhardness, and tensile properties of Sn-3.0wt.%Ag-0.5wt.%Cu-xwt.%TiO2 (x=0, 0.05, 0.1, and 0.6) composite solders were systematically investigated. Scanning electron microscope (SEM) was used to observe the microstructural evolution of the composite solders, measure the size of the Ag3Sn grains, and estimate the spacing between the Ag3Sn grains in the solder matrix. Energy-dispersive X-ray spectroscopy (EDX) and X-ray diffractometry (XRD) were used to identify the phases of eutectic areas in the composite solder matrix. Results show that both the average size of Ag3Sn grains and the spacing between the Ag3Sn grains decrease significantly, which might owe to the strong adsorption effect and high surface free energy of the TiO2 nanoparticles. The microhardness is improved by 37% compared with TiO2-free noncomposite solder as the weight percentage of TiO2 nanoparticles is 0.1wt.%. The improvement is due to the microstructural change of the composite solders, which is in good agreement with the prediction of the classic theory of dispersion strengthening. Tensile tests reveal that the TiO2-containg composite solder alloys have higher ultimate tensile strength (UTS) than TiO2-free noncomposite solder alloy due to solid solution hardening. UTS of solder alloys have a logarithmic increase relation with strain rate ranging from 10-3s-1 to 10-1s-1 and decreases with an increase of test temperatures ranging from 25°C to 125°C. © 2013 Elsevier Ltd. Source

Wu D.,Zhongkai University of Agriculture and Engineering
Journal of Software | Year: 2013

Existing topic tracking methods are mostly for news and forum data, which lack of statistical methods for microblogging on relevant topics. Combined with characteristics of micro-blog information, the paper proposes a microblogging statistical methods based on semantic similarity. Firstly by building topic semantic model and then use the HowNet semantic similarity calculation of two terms, and measures the relevance of the topic and microblogging. Finally statistics method is provided on the degree of correlation. Experiments show that novel method works on the problem soundly. © 2013 ACADEMY PUBLISHER. Source

Zhang H.,Zhongkai University of Agriculture and Engineering | Mittal G.,University of Guelph
Environmental Progress and Sustainable Energy | Year: 2010

This review provides an overview of studies on the film-forming properties of soy protein, wheat gluten and corn zein. Biodegradable films from these proteins have been investigated extensively. Casting is the most often used film-forming method. Glycerol is added as plasticizer in many studies. The proteins are normally dissolved or dispersed in suitable solvents with plasticizers. The resulting solutions or dispersions form free standing films on a plate by casting the mixture and subsequent drying. Posttreatments such as coating, heating, and radiation are also employed to improve film properties. These protein films in general are water sensitive and lack mechanical strength but are good oxygen barriers. Further studies to improve the properties of the films for food packaging materials are also discussed. © 2010 American Institute of Chemical Engineers Environ Prog. Source

Cai K.,Zhongkai University of Agriculture and Engineering
Advances in Information Sciences and Service Sciences | Year: 2012

Agricultural Internet of things (IOT) is one of the forefront areas in the modern agriculture and it has become the new trend of agricultural development in the 21st century. Besides, the agricultural IOT is a key and kernel technology in the development of agricultural informatization and sustainable realization of the world. Based on the need for agricultural IOT, combined with IOT technology and apply ZigBee wireless sensor networks, Internet and computer software technology, embedded technology, a remote monitoring system of field information is proposed. It focuses on the key factors of early warning in agriculture, such as on-site temperature, relative humidity and so on. In this paper, the critical technical issues of field information monitoring, which is based on IOT, is analyzed. Also, the network topology of sensor network node and the hardware and software design of the sensor network node are present. Finally, the system was developed on the information collection and control systems which had already been successfully used in the agricultural production. Source

Shi L.,Hefei University of Technology | Lin H.,Zhongkai University of Agriculture and Engineering
Langmuir | Year: 2011

SnO2 nanotubes have been prepared via a facile hydrothermal method at low temperatures using polycarbonate (PC) membrane as a hard template. The walls of as-prepared SnO2 nanotubes are composed of fine nanocrysalline particles and the size of SnO2 nanocrystals could be modified by changing reaction temperature. Formation mechanism of SnO 2 nanotubes is also discussed according to the experimental results. Cathodoluminescence properties of the SnO2 product indicated that the band gap of the nanostructures increase from 3.75 eV with a particle size 5.6 nm to 3.99 eV with a particle size 3.3 nm. The as-prepared SnO2 nanotubes were found to show enhanced gas-sensing activity and may be used as a candidate for the fabrication of gas sensors. © 2011 American Chemical Society. Source

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