431 research outputs found
On Dynamical Decomposition of Multiscale Oceanic Motions
No full textThe MATLAB script (multiscale_decomp_WLL2022.m) performs the decomposition proposed by Chuanyin Wang, Zhiyu Liu and Hongyang Lin ('On Dynamical Decomposition of Multiscale Oceanic Motions' submitted to JAMES)
A Simple Approach for Disentangling Vortical and Wavy Motions of Oceanic Flows
No full textThe MATLAB script (wavy_vortical_decomp.m) performs the decomposition proposed by Chuanyin Wang, Zhiyu Liu and Hongyang Lin ('A Simple Approach for Disentangling Vortical and Wavy Motions of Oceanic Flows ' submitted to JPO)
Chloroplast Genome Comparison and Phylogenetic Analysis of the Commercial Variety Actinidia chinensis ‘Hongyang’
No full textActinidia chinensis ‘Hongyang’, also known as red yangtao (red heart kiwifruit), is a vine fruit tree native to China possessing significant nutritional and economic value. However, information on its genetic diversity and phylogeny is still very limited. The first chloroplast (cp) genome of A. chinensis ‘Hongyang’ cultivated in China was sequenced using de novo technology in this study. A. chinensis ‘Hongyang’ possesses a cp genome that spans 156,267 base pairs (bp), exhibiting an overall GC content of 37.20%. There were 132 genes that were annotated, with 85 of them being protein-coding genes, 39 transfer RNA (tRNA) genes, and 8 ribosomal RNA (rRNA) genes. A total of 49 microsatellite sequences (SSRs) were detected, mainly single nucleotide repeats, mostly consisting of A or T base repeats. Compared with 14 other species, the cp genomes of A. chinensis ‘Hongyang’ were biased towards the use of codons containing A/U, and the non-protein coding regions in the A. chinensis ‘Hongyang’ cpDNA showed greater variation than the coding regions. The nucleotide polymorphism analysis (Pi) yielded nine highly variable region hotspots, most in the large single copy (LSC) region. The cp genome boundary analysis revealed a conservative order of gene arrangement in the inverted repeats (IRs) region of the cp genomes of 15 Actinidia plants, with small expansions and contractions of the boundaries. Furthermore, phylogenetic tree indicated that A. chinensis ‘Hongyang’ was the closest relative to A. indochinensis. This research provides a useful basis for future genetic and evolutionary studies of A. chinensis ‘Hongyang’, and enriches the biological information of Actinidia species
Organic acid composition of <i>A</i>. <i>chinensis</i> var. <i>chinensis</i> ‘Hongyang’ outer pericarp during fruit development.
No full textOrganic acid composition of A. chinensis var. chinensis ‘Hongyang’ outer pericarp during fruit development.</p
Chlorophyll, carotenoid and vitamin C metabolism regulation in <i>Actinidia chinensis</i> 'Hongyang' outer pericarp during fruit development
No full textAscorbic acid (AsA), chlorophyll and carotenoid contents and their associated gene expression patterns were analysed in Actinidia chinensis ‘Hongyang’ outer pericarp. The results showed chlorophyll degradation during fruit development and softening, exposed the yellow carotenoid pigments. LHCB1 and CLS1 gene expressions were decreased, while PPH2 and PPH3 gene expressions were increased, indicating that downregulation of chlorophyll biosynthesis and upregulation of its degradation, caused chlorophyll degradation. A decrease in the expression of the late carotenoid biosynthesis and maintenance genes (LCYB1, LCYE1, CYP1, CYP2, ZEP1, VDE1, VDE2, and NCED2) and degradation gene (CCD1), showed biosynthesis and degradation of carotenoid could be regulatory factors involved in fruit development. Most genes expression data of L-galactose and recycling pathway were agreement with the AsA concentrations in the fruit, suggesting these are the predominant pathways of AsA biosynthesis. GMP1, GME1 and GGP1 were identified as the key genes controlling AsA biosynthesis in ‘Hongyang’ outer pericarp.</div
On Dynamical Decomposition of Multiscale Oceanic Motions
No full textThe MATLAB script (multiscale_decomp_WLL2022.m) performs the decomposition proposed by Chuanyin Wang, Zhiyu Liu and Hongyang Lin ('On Dynamical Decomposition of Multiscale Oceanic Motions' submitted to JAMES)
On Dynamical Decomposition of Multiscale Oceanic Motions
No full textThe MATLAB script (multiscale_decomp_WLL2022.m) performs the decomposition proposed by Chuanyin Wang, Zhiyu Liu and Hongyang Lin ('On Dynamical Decomposition of Multiscale Oceanic Motions' submitted to JAMES)
Chlorophyll, carotenoid and vitamin C metabolism regulation in <i>Actinidia chinensis</i> 'Hongyang' outer pericarp during fruit development - Fig 1
No full textDevelopment of A. chinensis var. chinensis ‘Hongyang’ from the open flower (0 days after anthesis, DAA) to ripened fruit including fruit weight (A), size (B), dry matter (C), °Brix (D), soluble sugar content (E), titratable acid (F), ascorbic acid (G), firmness (H) and phenotype (I, Bars indicated 1 cm). Each value is presented as the mean ± standard deviation (n = 10).</p
Combined Widely Targeted Metabolomic, Transcriptomic, and Spatial Metabolomic Analysis Reveals the Potential Mechanism of Coloration and Fruit Quality Formation in Actinidia chinensis cv. Hongyang
No full textPostharvest kiwifruit (Actinidia chinensis cv. Hongyang) pulp is mainly composed of outer yellow-flesh (LR) and inner red-flesh (HR). However, information about the differences in coloration and fruit quality between these two parts are limited. In this study, widely targeted metabolomic, transcriptomic, and spatial metabolomic analyses were used to reveal the potential mechanism of coloration and fruit quality formation. The results show that a total of 1001 metabolites were identified in Hongyang kiwifruit, and the accumulation of 211 metabolites were significantly higher in the HR than LR, including 69 flavonoids, 53 phenolic acids, and 38 terpenoids. There were no significant differences in the content of citric acid, quinic acid, glucose, fructose, or sucrose between the LR and HR. These results were consistent with the results from the RNA-seq profile and spatial metabolomic analysis. In addition, a total of 23 key candidate genes related to flesh color and fruit quality formation were identified and validated by qRT-PCR analysis. This study provides a theoretical basis for elucidating the underlying mechanism of the formation of kiwifruit flesh color and fruit quality
Completing Low-Rank Matrices With Corrupted Samples From Few Coefficients in General Basis
No full textSubspace recovery from the corrupted and missing data is crucial for various applications in signal processing and information theory. To complete missing values and detect column corruptions, the existing robust matrix completion (MC) methods mostly concentrate on recovering a low-rank matrix from a few corrupted coefficients with respect to standard basis, which, however, does not apply to more general basis, e.g., Fourier basis. In this paper, we prove that the range space of an m x n matrix with rank r can be exactly recovered from a few coefficients with respect to general basis, though r and the number of corrupted samples are both as high as O(min{m, n}/log(3)(m + n)). Our model covers the previous ones as special cases, and robust MC can recover the intrinsic matrix with a higher rank. Moreover, we suggest a universal choice of the regularization parameter, which is lambda = 1/root log n. By our l(2,1) filtering algorithm, which has theoretical guarantees, we can further reduce the computational cost of our model. As an application, we also find that the solutions to extended robust low-rank representation and to our extended robust MC are mutually expressible, so both our theory and algorithm can be applied to the subspace clustering problem with missing values under certain conditions. The experiments verify our theories.SCI(E)[email protected]; [email protected]; [email protected]
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