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- 저자 : Gao Deng-Tao (검색결과 4 건)
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Analysis of the Difference of Spray Angles based on Various Definitions and Calculation Criterions
( Yuan Gao ),( Li Guang Li ),( Ya Gao ),( Wei Di Huang ),( Jun Deng ),( Tao Li Gu ) 한국액체미립화학회 2010 한국액체미립화학회 학술강연회 논문집 Vol.2010 No.-
Spray angle is one of the key spray macro parameters which reflect fuel atomization characteristics and fuel and air entrainment quality directly; it then could affect the combustion efficiency and emission formation in cylinder. As the spray characteristics are widely investigated, there are already some kinds of definition and calculation methods for spray angle. Although all these definitions reflect the spray angle trends correspondingly, the difference between these definitions and calculation results was seldom studied. This paper focuses on the comparison and analysis the spray angle results based on the different calculation criterions, and the trend of these key points versus time at various calculation criterions which determine spray angle.
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Fine mapping and candidate gene analysis of the dwarf gene d162(t) in rice (Oryza sativa L.)
Fan-tao Zhang,Xiao-ling Gao,Ping-rong Wang,Chang-hui Sun,Bing Wang,Xiu-lan Li,Jian-qing Zhu,Xiao-jian Deng 한국유전학회 2011 Genes & Genomics Vol.33 No.1
In our previous study, d162(t), a single recessive gene, which caused rice dwarf mutant, had been mapped on the short arm of chromosome 3. In this study, the d162(t) gene was fine mapped to a confined region about 0.82 cM by RM14641 and RM3134, and co-segregated with InDel361-2, InDel361-3,InDel361-5, RM14645, RM1022 and RM14643, where no known gene involved in plant height has been identified. Based on the annotation results of TIGR, dozens of open reading frames (ORFs) were predicted in this region, among them,five ORFs were the most possible genes related to the phenotype. In these ORFs, Os03g13010, related to U-box domain containing protein, had a 62bp segment deletion in the coding region in 162d (mutant type, MT). The results of RT-PCR showed that the transcriptional level of Os03g13010was significantly different between Shuhui162 (wild type, WT)and 162d (MT). Therefore, the gene (Os03g13010) encoding a U-box domain containing protein was considered as the candidate gene of d162(t).
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A Fiber Spool’s Vibration Sensitivity Optimization Based on Orthogonal Experimental Design
Jing Gao,Linbo Zhang,Dongdong Jiao,Guanjun Xu,Xue Deng,Qi Zang,Honglei Yang,Ruifang Dong,Tao Liu,Shougang Zhang 한국광학회 2024 Current Optics and Photonics Vol.8 No.1
A fiber spool with ultra-low vibration sensitivity has been demonstrated for the ultra-narrowlinewidth fiber-stabilized laser by the multi-object orthogonal experimental design method, which can achieve the optimization object and analysis of influence levels without extensive computation. According to a test of 4 levels and 4 factors, an L 16 (4 4 ) orthogonal table is established to design orthogonal experiments. The vibration sensitivities along the axial and radial directions and the normalized sums of the vibration sensitivities are determined as single objects and comprehensive objects, respectively. We adopt the range analysis of object values to obtain the influence levels of the four design parameters on the single objects and the comprehensive object. The optimal parameter combinations are determined by both methods of comprehensive balance and evaluation. Based on the corresponding fractional frequency stability of ultra-narrow-linewidth fiber-stabilized lasers, we obtain the final optimal parameter combination A3B1C2D1, which can achieve the fiber spool with vibration sensitivities of 10 −12 /g magnitude. This work is the first time to use an orthogonal experimental design method to optimize the vibration sensitivities of fiber spools, providing an approach to design the fiber spool with ultra-low vibration sensitivity.
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Comparison of drought resistance of rootstocks 'M9-T337' and 'M26' grafted with 'Huashuo' apple
Shi Cai-Yun,Liu Li,Li Qiu-Li,Wei Zhi-Feng,Gao Deng-Tao 한국원예학회 2022 Horticulture, Environment, and Biotechnology Vol.63 No.3
Drought stress is one of the main limiting factors in apple (Malus domestica Borkh.) cultivation. Rootstock plays an important role in the drought tolerance of apple plants. ‘M.9-T337’ is a novel apple rootstock that was recently introduced and widely cultivated in China. In this study, we selected the new, widely promoted Chinese apple variety ‘Huashuo’ as the scion and grafted it onto ‘M.9-T337’ (HM9). Another combination, ‘Huashuo’/‘M.26’/Malus robusta Rehd. (HM26), served as the experimental control to analyse drought resistance in the two hybrids. We believe that this empirical approach is more representative than merely studying rootstock seedlings. After sustained drought stress for over 1 month, the leaf relative water content had decreased in both types of plants, but to a lesser extent in HM26 than in HM9. The SPAD values increased in both plants, but without significant difference. Drought stress reduced photosynthetic activity in both plants, and the net photosynthetic rate was higher in HM26 than in HM9. The observed changes in the chlorophyll fluorescence parameters indicated that drought had damaged the PSII activity centres of both plants, photosynthetic electron transfer was inhibited, and excessive excitation energy accumulated. However, compared to HM26, HM9 displayed lower maximal PSII quantum photochemical efficiency and potential PSII activity. Moreover, HM9 showed lower antioxidant enzyme activity than HM26 under drought stress. A membership function analysis confirmed that ‘M.9-T337’ was less drought resistant than ‘M.26’. Nevertheless, ‘M.9-T337’ could still recover after prolonged drought stress, indicating it also had good drought resistance.
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