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Zhang Y.J.,China Institute of Technology | Zhang Y.J.,National Engineering Research Center for Agricultural Products Logistics | Chen E.X.,National Engineering Research Center for Agricultural Products Logistics
Applied Mechanics and Materials | Year: 2014

The paper discusses how to use the advanced technology of the Internet of things to realize the real-time monitoring of the library and the preservation of goods in transit third party cold chain logistics, mainly discusses how to network technology with Internet 3G network of RFID and WSN integrated network and intelligent nodes, realize the visualization of fresh goods real-time monitoring, convenient management personnel of customer inquiries and feedback information, to ensure the preservation of food quality and safety. © (2014) Trans Tech Publications, Switzerland. Source

Zhang Y.,China Institute of Technology | Zhang Y.,National Engineering Research Center for Agricultural Products Logistics | Cheng E.,National Engineering Research Center for Agricultural Products Logistics
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2013

At present, K-Means algorithm as a method of clustering based on partition has more applications. By analyzing the problem of K-Means, we propose a kind of optimized algorithm to select initial clustering points, which utilize an adjacent similar degree between points to get similarity density, then by means of max density points selecting our method heuristically generate clustering initial centers to get more reasonable clustering results. This method compares to traditional methods lie in it will get suitable initial clustering centers and also has more stable clustering result. Finally, through comparative experiments we prove the effectiveness and feasibility of this algorithm. © 2013 Springer-Verlag Berlin Heidelberg. Source

Zhang C.,China Institute of Technology | Zhang C.,Zhejiang University | Zhang C.,National Engineering Research Center for Agricultural Products Logistics | Chen K.,Zhejiang University | And 2 more authors.
BioControl | Year: 2013

Integrated management that combines different methods is being actively pursued in the control of postharvest disease. In this study, the biocontrol yeast Cryptococcus laurentii and ultraviolet-C (UV-C) treatment were evaluated for controlling infection following artificial inoculation with Botrytis cinerea or Alternaria alternata, and natural infection in tomato fruit. Applied separately, C. laurentii and UV-C (4 kJ m-2) effectively inhibited decay caused by B. cinerea or A. alternata, and natural infection. The combination of C. laurentii and UV-C showed better control efficiency. UV-C treatment did not affect yeast growth in fruit wounds, while the treatment induced the transcript expression of β-1,3-glucanase, phenylalanine ammonia-lyase, peroxidase and superoxide dismutase based on real-time PCR analysis, as well as increased the activity of these enzymes in tomato fruit. Results indicate that the mechanism by which UV-C enhanced the biocontrol efficacy of C. laurentii may be associated with the elicitation of defense response in tomato fruit. © 2012 International Organization for Biological Control (IOBC). Source

Fan X.-G.,Yantai University | Zhang C.-F.,National Engineering Research Center for Agricultural Products Logistics | Xiao L.,Yantai University | Zhang Z.-F.,Yantai University | And 2 more authors.
Modern Food Science and Technology | Year: 2013

The Vc content of fresh-cut broccoli was determined during storage while the fresh-cut broccolis with hypobaric treatment for 36 h were placed at 273 K, 278 K, 283 K, 288 K and 293 K, respectively. The trend of Vc was fitted using zero order reaction and first order reaction based on chemical reaction kinetics theory to determine the variation rate of Vc (k). Two shelf-life prediction models were established combined with Arrhenius equation and the accuracy of models was evaluated combined with sensory evaluation. The results indicate that the content of Vc decreased with increasing storage time and temperature, and the variation rate of Vc (k) increased with increasing temperature. Accuracy evaluation between predicted and observed shelf-life showed that the predictive accuracy of shelf-life prediction model SL1 based on first order reaction (preexponential factor: k0=-3.19×1020, activation energy: Ea=118762.49, R2=0.9986) was the highest with the average relative error being of 7.94%. The shelf-life of fresh-cut broccoli with hypobaric treatment can be predicted at the storage temperature from 273 K to 293 K. Source

Ren G.,Henan University of Science and Technology | Li X.,Henan University of Science and Technology | Yin J.,Academy of State Administration of Grain | Zhang C.,National Engineering Research Center for Agricultural Products Logistics | And 3 more authors.
Journal of the Chinese Cereals and Oils Association | Year: 2014

Rice has developed the first staple food in China. Edible quality and safety of rice are requested gradually with the developing living standard, the quality of which is also getting more and more attention during storage and circulation process. As a result, it is particularly important for rice quality to be inspected and quality change to be forecasted during storage, processing and market circulation and so on. The research process for quality of rice using nondestructive testing technology (near infrared spectroscopy, electronic nose and computer vision), chromatographic analysis technology, scanning electron microscopy technology, textural properties analysis technology etc has been discussed in this paper. Some problems of these methods were proposed, and application trends on quality analysis for rice were prospected. Among them, the role of nondestructive testing technology in rice quality analysis becomes more and more prominent; the development of stable performance, high precision, convenient operation, miniaturization of rice analysis detection system, at the same time, establishing standardized measurement method and analysis method become the development tendency in the future. As the technology research of grain logistics process about quality control tracking, quality changes for rice of logistics link will also be eye-catching. Source

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