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HD Map ℳ Reachable Paths 𝒫Feasible Trajectories 𝓣 Modeling Agent-map Interactions Predicted Trajectories 𝓣 𝒕𝒂𝒓 ⊂ 𝓣 Fig. 1. Illustration of our proposed PRIME framework. PRIME has two stages for trajectory prediction in traffic scenarios: the model-based generator (left) which samples the target's feasible future trajectories T by taking its real-time state s 0 tar and the map M, while explicitly imposing kinematical and environmental constraints to guarantee trajectory feasibility; the learning-based evaluator (right) which receives the feasible trajectories T and all observed tracks S to model the implicit interactions among all traffic agents, and selects a final set of feasible trajectories Ttar ⊂ T as the prediction result.

The objective of this study was to investigate how parts and maturity of Brasenia schreberi could affect its chemical composition and bioactivities. Among different parts of B. schreberi, G‐BS sample contained the highest total carbohydrate content (589.1 ± 11.07 mg/g) and total polyphenols content (mg GA/g), while it had relatively low HO· (IC50 = 3.42 ± 0.12 mg/ml), DPPH (IC50 = 4.39 ± 0.24 mg/ml) and ABTS free radical (IC50 = 1.66 ± 0.05 mg/ml) scavenging activity. Principal components analysis showed that mucilage covered B. schreberi was significantly different from the plant itself. Galactose (61.56 ± 3.29 mg/g), fucose (36.45 ± 0.68 mg/g), and arabinose (27.08 ± 0.27 mg/g) were three top abundant monosaccharides in G‐BS sample. G‐BS contained about 57% of polysaccharides and it showed potential hypoglycemic activities as it exhibited comparable α‐amylase (IC50 = 3.35 mg/ml) and α‐glucosidase (IC50 = 1.94 mg/ml) inhibitory activity to acarbose. G‐BS might be a good source of polysaccharide that can be used as functional supplement. Practical applications As parts and maturity can affect chemical composition and bioactivity, present results help guide potential application of B. schreberi. The study will help food industry to develop B. schreberi polysaccharide‐based products as a functional additive or pharmaceutical supplement.

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