In this work we determine the physical and mechanical properties of local composites reinforced with papaya trunk fibers (FTP) on one hand and particles of the hulls of the kernels of the garlic (PCNFA) in the other h...In this work we determine the physical and mechanical properties of local composites reinforced with papaya trunk fibers (FTP) on one hand and particles of the hulls of the kernels of the garlic (PCNFA) in the other hand. The samples are produced according to BSI 2782 standards;by combining fibers and untreated to polyester matrix following the contact molding method. We notice that the long fibers of papaya trunks improve the tensile/compression characteristics of composites by 45.44% compared to pure polyester;while the short fibers improve the flexural strength of composites by 62.30% compared to pure polyester. Furthermore, adding fibers decreases the density of the final composite material and the rate of water absorption increases with the size of the fibers. As regards composite materials with particle reinforcement from the cores of the winged fruits, the particle size (fine ≤ 800 μm and large ≤ 1.6 mm) has no influence on the Young’s modulus and on the rate of water absorption. On the other hand, fine particles improve the flexural strength of composite materials by 53.08% compared to pure polyester;fine particles increase the density by 19% compared to the density of pure polyester.展开更多
【目的】分析云南德宏澳洲坚果主栽品种果实形态与营养成分含量的差异并进行综合评价,为澳洲坚果良种选育、推广和利用提供科学依据。【方法】以‘Own Choice’‘迪思1号’等8个澳洲坚果品种为对象,于果实成熟期采集果实,测定果实鲜质...【目的】分析云南德宏澳洲坚果主栽品种果实形态与营养成分含量的差异并进行综合评价,为澳洲坚果良种选育、推广和利用提供科学依据。【方法】以‘Own Choice’‘迪思1号’等8个澳洲坚果品种为对象,于果实成熟期采集果实,测定果实鲜质量、壳果干质量等16个果实形态性状以及果仁粗脂肪、蛋白质、主要矿质元素等9个营养成分质量分数或质量比。采用方差分析、相关分析、主成分分析等方法进行分析与综合评价。【结果】不同品种间果实形态与营养成分含量存在明显差异。果实形态性状的变异系数为5.46%~20.43%,以果仁质量和果皮质量变异系数最大,果实横径、壳果横径和出种率的变异系数最小。果仁营养成分含量的变异系数为6.36%~31.69%,以铁元素质量比和可溶性糖质量分数的变异系数最大,粗脂肪质量分数变异系数最小。相关性分析表明,果仁质量与果实横径呈显著正相关,出种率和出仁率仅与果皮厚度和壳果厚度显著负相关。主成分分析提取的前6个主成分累计贡献率达96.798%。综合得分排名由高到低依次为‘Hidden Valley A16’‘迪思1号’‘迪思2号’‘Own Choice’‘HAES344’‘HAES508’‘H2’‘HAES695’。【结论】8个澳洲坚果主栽品种中,以‘Hidden Valley A16’‘迪思1号’‘迪思2号’和‘Own Choice’的综合品质表现最优,可作为德宏州优先推广种植的品种。展开更多
文摘In this work we determine the physical and mechanical properties of local composites reinforced with papaya trunk fibers (FTP) on one hand and particles of the hulls of the kernels of the garlic (PCNFA) in the other hand. The samples are produced according to BSI 2782 standards;by combining fibers and untreated to polyester matrix following the contact molding method. We notice that the long fibers of papaya trunks improve the tensile/compression characteristics of composites by 45.44% compared to pure polyester;while the short fibers improve the flexural strength of composites by 62.30% compared to pure polyester. Furthermore, adding fibers decreases the density of the final composite material and the rate of water absorption increases with the size of the fibers. As regards composite materials with particle reinforcement from the cores of the winged fruits, the particle size (fine ≤ 800 μm and large ≤ 1.6 mm) has no influence on the Young’s modulus and on the rate of water absorption. On the other hand, fine particles improve the flexural strength of composite materials by 53.08% compared to pure polyester;fine particles increase the density by 19% compared to the density of pure polyester.
文摘【目的】分析云南德宏澳洲坚果主栽品种果实形态与营养成分含量的差异并进行综合评价,为澳洲坚果良种选育、推广和利用提供科学依据。【方法】以‘Own Choice’‘迪思1号’等8个澳洲坚果品种为对象,于果实成熟期采集果实,测定果实鲜质量、壳果干质量等16个果实形态性状以及果仁粗脂肪、蛋白质、主要矿质元素等9个营养成分质量分数或质量比。采用方差分析、相关分析、主成分分析等方法进行分析与综合评价。【结果】不同品种间果实形态与营养成分含量存在明显差异。果实形态性状的变异系数为5.46%~20.43%,以果仁质量和果皮质量变异系数最大,果实横径、壳果横径和出种率的变异系数最小。果仁营养成分含量的变异系数为6.36%~31.69%,以铁元素质量比和可溶性糖质量分数的变异系数最大,粗脂肪质量分数变异系数最小。相关性分析表明,果仁质量与果实横径呈显著正相关,出种率和出仁率仅与果皮厚度和壳果厚度显著负相关。主成分分析提取的前6个主成分累计贡献率达96.798%。综合得分排名由高到低依次为‘Hidden Valley A16’‘迪思1号’‘迪思2号’‘Own Choice’‘HAES344’‘HAES508’‘H2’‘HAES695’。【结论】8个澳洲坚果主栽品种中,以‘Hidden Valley A16’‘迪思1号’‘迪思2号’和‘Own Choice’的综合品质表现最优,可作为德宏州优先推广种植的品种。
