Human 3D Avatar Modeling with Implicit Neural Representation: A Brief Survey

A human 3D avatar is one of the important elements in the metaverse, and the modeling effect directly affects people's visual experience. However, the human body has a complex topology and diverse details, so it is often expensive, time-consuming, and laborious to build a satisfactory model. Recent studies have proposed a novel method, implicit neural representation, which is a continuous representation method and can describe objects with arbitrary topology at arbitrary resolution. Researchers have applied implicit neural representation to human 3D avatar modeling and obtained more excellent results than traditional methods. This paper comprehensively reviews the application of implicit neural representation in human body modeling. First, we introduce three implicit representations of occupancy field, SDF, and NeRF, and make a classification of the literature investigated in this paper. Then the application of implicit modeling methods in the body, hand, and head are compared and analyzed respectively. Finally, we point out the shortcomings of current work and provide available suggestions for researchers.Comment: A Brief Surve

Effects of Exogenous Substances Treatment on Fruit Quality and Pericarp Anthocyanin Metabolism of Peach

In this study, the two peach cultivars ‘Baifeng’ and ‘Weiduanmihong’ were used as experimental materials, and their fruits were sprayed with different concentrations of L-glutamic acid, brassinolide, and sucrose to study the effects of these three exogenous substances on fruit quality and anthocyanin metabolism of peaches. The results showed that the appearance quality (average single fruit weight, fruit firmness, and peel color difference), nutritional quality (soluble solids, soluble sugar, titratable acid, anthocyanins, total phenols, flavonoids, etc.), peel anthocyanin-related enzyme activity, and related gene expression of ‘Baifeng’ and ‘Weiduanmihong’ peaches treated with three different exogenous substances were different from those of the control. Higher-concentration treatments could significantly improve the appearance of peach fruit, the nutritional quality of peach fruit and the activity of anthocyanin-related enzymes in peel, as well as promote the expression of related genes. Treatment with 400 mg/L L-glutamic acid significantly promoted the average fruit weight of ‘Baifeng’ peaches. Treatment with 800 mg/L L-glutamic acid significantly promoted the increase in PAL enzyme activity and the expression of PpPAL and PpF3H in the two peach varieties and significantly promoted the expression of anthocyanin metabolism genes PpF3′H and PpGST1 in ‘Baifeng’ peach peel and anthocyanin metabolism gene PpUFGT in ‘Weiduanmihong’ peach peel. Treatment with 34 mg/L sucrose significantly increased the fruit firmness of ‘Baifeng’ peaches and the soluble sugar content of ‘Weiduanmihong’ peaches. Treatment with 51 mg/L sucrose significantly promoted the increase in flavonoid content and PpUFGT expression in ‘Baifeng’ peach fruit and significantly promoted the expression of anthocyanin metabolism genes PpDFR and PpANS in ‘Weiduanmihong’ peach peel. Treatment with 0.6 mg/L brassinolide significantly promoted the increase in soluble solids (TTS), soluble sugar, anthocyanin, total phenol content, PAL enzyme activity, UFGT enzyme activity, and the expression of anthocyanin metabolism genes PpDFR and PpMYB10.1 in ‘Baifeng’ peach fruit, and it significantly increased the average single fruit weight, fruit hardness, anthocyanin content, and UFGT enzyme activity of ‘Weiduanmihong’ peach fruit and promoted the expression of anthocyanin metabolism genes PpF3H and PpGST1 in ‘Weiduanmihong’ peach peel. The comprehensive effect of 0.6 mg/L brassinolide treatment on improving peach fruit quality and increasing anthocyanin content produces the best results and could be popularized in production practices

SDS-PAGE identification and Western blotting analysis of the minimal epitopes on NP^237−305 using pAb.

<p>(<b>a</b>) Thirteen 8mer peptides (P1–P13) corresponding to the Y1 protein. (<b>b</b>) Nine 8mer peptides (P14–P22) corresponding to the Y2 protein. (<b>c</b>) Ten 8mer peptides (P23–P32) corresponding to the Y3 protein. (<b>d</b>) Nine 8mer peptides (P33–P41) corresponding to the Y4 protein. The arrows stand for 8mer peptides which display a positive antigen-antibody reaction in Western Blotting analysis.</p

Western blot of five 8-mer peptides containing identified BCEs with or without one residue variation performed using positive sheep sera with a confirmed history of CCHFV infection.

<p>Five randomly selected 8-mer peptides containing identified BCEs (<b>a</b>) or BCEs with one residue variation (<b>b</b>) expressed as GST188 fusion protein in <i>E. coli</i>. A serum sample of healthy sheep with no history of CCHFV infection was used as a negative control. CK was a GST188 protein tag. The arrows represent 8mer peptides displaying positive antigen-antibody reactions based upon Western Blotting analysis.</p

The synthetic 8mer peptide sequences derived from a span of the immunodominant peptides Y1, Y2, Y3, and Y4 respectively.

<p>The yellow and magenta highlighting represents the common sequences among peptides which react with pAb or mAb using Western blotting analysis.</p