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Lin L.,Xiamen Ocean Vocational College | Liuzhen,Xiamen University
Proceedings of the 9th International Conference on Computer Science and Education, ICCCSE 2014 | Year: 2014

Chip quality detection is one of the important procedures before the picking up operation of chip by mounter. Fast image matching method was proposed to conduct the quality inspection of micro-electromechanical systems (MEMS) chip. The advantages and disadvantages of gray projection based matching algorithm were analyzed. Then a compound projective feature matching method was put forward. VC based algorithm was given to achieve compound projective feature matching method. Compared with the traditional gray matching algorithm and the normalized cross-correlation algorithm, the ability to match and the match time of the proposed matching method were studied. Contrast with single direction of projection matching method, the matching accuracy of the given matching method was tested. Meanwhile the matching ability of proposed algorithm was test for a small angle rotation of image. Finally, the compound projection-based matching method was used to detect the quality of the MEMS chip, and the practicality of the proposed method in terms of time and accuracy were verified by experimental results. © 2014 IEEE.

Jian W.,South China Agricultural University | Jian W.,Xiamen Ocean Vocational College | Sun Y.,South China Agricultural University | Huang H.,South China Agricultural University | And 7 more authors.
Carbohydrate Polymers | Year: 2013

To study the preparation and separation of Konjac oligosaccharides, Konjac Glucomannan was degraded by the combination of γ-irradiation and β-mannanase, and then the degradation product was separated by ultrafiltration. To our interest, for most of Konjac oligosaccharides obtained by this method, the molecular mass was lower than 2200 Da. In addition, the 1000 Da molecular weight cut off membrane could effectively separate the Konjac oligosaccharides. In conclusion, the combination of γ-irradiation and β-mannanase was an efficient method to obtain Konjac oligosaccharides, and the oligosaccharides of molecular mass lower than 1000 Da could be effectively separated by ultrafiltration. © 2012 Elsevier Ltd.

Pang J.,Fujian Agriculture and forestry University | Jian W.,Fujian Agriculture and forestry University | Jian W.,Xiamen Ocean Vocational College | Wang L.,Fujian Normal University | And 3 more authors.
Carbohydrate Polymers | Year: 2012

In order to improve the surface property of Konjac glucomannan (KGM) film, the nitrogen plasma modification was carried out using ion beam injection machine. The surface atomic composition was evaluated by X-ray photoelectron spectroscopy analysis afterward. It was observed that the atomic concentration ratio of wO/wC increased using plasma treatment. The molecular chain degraded and acetyl was partly removed. Hydroxyl was partly replaced by primary amide group. Generation of new functionality groups suggested that plasma treatment might be an effective means to modify the physical property of KGM film. © 2011 Elsevier Ltd All rights reserved.

Jian W.,Fujian Agriculture and forestry University | Jian W.,Xiamen Ocean Vocational College | Zeng Y.,Fujian Agriculture and forestry University | Xiong H.,Fujian Agriculture and forestry University | Pang J.,Fujian Agriculture and forestry University
Carbohydrate Polymers | Year: 2011

The formation of konjac glucomannan-borate complex in water solution has been investigated by experimental and molecular simulation methods. The energy, radical distribution function of borate anion (B(OH) 4 -), and mean square displacement of the complex were studied during the molecular simulation, and the results indicate that one type of helical complex can be formed based on the hydrogen bonds between borate anion and helical chain of KGM. The hydrogen bond is formed by the interaction of borate anion and -OH groups on C (6) of mannose and glucose. Temperature has little effect on the helical conformation of the complex. It was proposed that the complex can form gel through the aggregation arrangement of helical chain. © 2011 Elsevier Ltd. All rights reserved.

Long Y.,CAS Wuhan Institute of Hydrobiology | Li L.,Xiamen Ocean Vocational College | Li Q.,CAS Wuhan Institute of Hydrobiology | He X.,CAS Wuhan Institute of Hydrobiology | Cui Z.,CAS Wuhan Institute of Hydrobiology
PLoS ONE | Year: 2012

Temperature influences nearly all biochemical, physiological and life history activities of fish, but the molecular mechanisms underlying the temperature acclimation remains largely unknown. Previous studies have identified many temperature-regulated genes in adult tissues; however, the transcriptional responses of fish larvae to temperature stress are not well understood. In this study, we characterized the transcriptional responses in larval zebrafish exposed to cold or heat stress using microarray analysis. In comparison with genes expressed in the control at 28°C, a total of 2680 genes were found to be affected in 96 hpf larvae exposed to cold (16°C) or heat (34°C) for 2 and 48 h and most of these genes were expressed in a temperature-specific and temporally regulated manner. Bioinformatic analysis identified multiple temperature-regulated biological processes and pathways. Biological processes overrepresented among the earliest genes induced by temperature stress include regulation of transcription, nucleosome assembly, chromatin organization and protein folding. However, processes such as RNA processing, cellular metal ion homeostasis and protein transport and were enriched in genes up-regulated under cold exposure for 48 h. Pathways such as mTOR signalling, p53 signalling and circadian rhythm were enriched among cold-induced genes, while adipocytokine signalling, protein export and arginine and praline metabolism were enriched among heat-induced genes. Although most of these biological processes and pathways were specifically regulated by cold or heat, common responses to both cold and heat stresses were also found. Thus, these findings provide new interesting clues for elucidation of mechanisms underlying the temperature acclimation in fish. © 2012 Long et al.

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