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Four-Leg Object Recognition for Service Robot Based on Top-hat Transformation
Hao Wu,Guohui Tian,Xinran Wang,Fei Lu 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.12
A method of object recognition for objects with special topological structure is developed based on top-hat transformation for service robot. The objects with four legs are easily detected and recognized by service robot with laser ranger array by this method. First, the top-hat transformation in one dimension is reviewed, then the recognition strategy of self-adapting threshold for objects with special topological structure is proposed, and the general data process for object recognition and position is proposed and analyzed. Experimental results show that the process of object recognition based on top-hat transformation proposed in this article is an effective and accurate application.
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Yanru Li,Hua Zhang,Guohui Lu 한국통합생물학회 2015 Animal cells and systems Vol.19 No.6
The present study aims to investigate the mechanism of the protective action of Procyanidins (PC) against tertiary butyl hydroperoxide (TBHP)-induced cytotoxicity and cell death in human hepatocyte-derived cell line HL7702 cells. Incubation of HL7702 cells with PC prevented TBHP-induced loss in cell viability and reduction in GSH/GSSG ratio and activities of antioxidant enzymes have also been found to be prevented by PC.Western blot was used to evaluate the levels of cytochrome c, Bcl-2, Bax, Sirt3 and IDH2. The results showed that PC effectively protect TBHP-treated HL7702 cells from death, and increase superoxide dismutase activity and significantly decrease malondialdehyde production. PC increased the ratio of GSH/GSSG and NADPH/NADP+, and reduced the release of cytochrome c from mitochondria and decreased the Bax expression, and also increased the expression of Bcl-2, IDH2 and Sirt3. PC prevented TBHP-induced oxidative stress injury in HL7702 cells and functioning via Sirt3-dependent mitochondria pathways.
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Yongqing Cao,Tao Zeng,Wei Han,Xueying Ma,Tiantian Gu,Li Chen,Yong Tian,Wenwu Xu,Jianmei Yin,Guohui Li,Lizhi Lu,Shuangbao Gun Asian Australasian Association of Animal Productio 2024 Animal Bioscience Vol.37 No.1
Objective: Tibetan chickens, which have unique adaptations to extreme high-altitude environments, exhibit phenotypic and physiological characteristics that are distinct from those of lowland chickens. However, the mechanisms underlying hypoxic adaptation in the liver of chickens remain unknown. Methods: RNA-sequencing (RNA-Seq) technology was used to assess the differentially expressed genes (DEGs) involved in hypoxia adaptation in highland chickens (native Tibetan chicken [HT]) and lowland chickens (Langshan chicken [LS], Beijing You chicken [BJ], Qingyuan Partridge chicken [QY], and Chahua chicken [CH]). Results: A total of 352 co-DEGs were specifically screened between HT and four native lowland chicken breeds. Gene ontology and Kyoto encyclopedia of genes and genomes enrichment analyses indicated that these co-DEGs were widely involved in lipid metabolism processes, such as the peroxisome proliferator-activated receptors (PPAR) signaling pathway, fatty acid degradation, fatty acid metabolism and fatty acid biosynthesis. To further determine the relationship from the 352 co-DEGs, protein-protein interaction network was carried out and identified eight genes (ACSL1, CPT1A, ACOX1, PPARC1A, SCD, ACSBG2, ACACA, and FASN) as the potential regulating genes that are responsible for the altitude difference between the HT and other four lowland chicken breeds. Conclusion: This study provides novel insights into the molecular mechanisms regulating hypoxia adaptation via lipid metabolism in Tibetan chickens and other highland animals.
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