对不同养殖模式斑石鲷的生长和鱼肉品质特性进行探究与分析。通过随机选取鲜活斑石鲷,运用质量长度指数K值、色差值、质构特性及感官评定等指标,研究不同养殖模式下斑石鲷的食用品质特性并分析鱼肉差异的成因。结果表明:网箱养殖的斑石...对不同养殖模式斑石鲷的生长和鱼肉品质特性进行探究与分析。通过随机选取鲜活斑石鲷,运用质量长度指数K值、色差值、质构特性及感官评定等指标,研究不同养殖模式下斑石鲷的食用品质特性并分析鱼肉差异的成因。结果表明:网箱养殖的斑石鲷质量长度指数K值为19.29 g/cm,稍高于池塘养殖模式,表明其运动能力更高,且影响极显著;在色差值指标上,池塘养殖的鱼肉肉色鲜亮饱和;在硬度、弹性、内聚性及恢复性等参数上,网箱养殖模式下的斑石鲷鱼片均大于池塘养殖模式;而在咀嚼性这项参数上,池塘养殖的斑石鲷鱼片为2.457 m J,表现更好。养殖模式仅对硬度和恢复性影响显著。展开更多
Overcoming chromatic aberrations is a vital concern in imaging systems in order to facilitate fullcolor and hyperspectral imaging.By contrast,large dispersion holds opportunities for spectroscopy and tomography.Combin...Overcoming chromatic aberrations is a vital concern in imaging systems in order to facilitate fullcolor and hyperspectral imaging.By contrast,large dispersion holds opportunities for spectroscopy and tomography.Combining both functions into a single component will significantly enhance its versatility.A strategy is proposed to delicately integrate two lenses with a static resonant phase and a switchable geometric phase separately.The former is a metasurface lens with a linear phase dispersion.The latter is composed of liquid crystals(LCs)with space-variant orientations with a phase profile that is frequency independent.By this means,a broadband achromatic focusing from 0.9 to 1.4 THz is revealed.When a saturated bias is applied on LCs,the geometric phase modulation vanishes,leaving only the resonant phase of the metalens.Correspondingly,the device changes from achromatic to dispersive.Furthermore,a metadeflector with tunable dispersion is demonstrated to verify the universality of the proposed method.Our work may pave a way toward active metaoptics,promoting various imaging applications.展开更多
文摘对不同养殖模式斑石鲷的生长和鱼肉品质特性进行探究与分析。通过随机选取鲜活斑石鲷,运用质量长度指数K值、色差值、质构特性及感官评定等指标,研究不同养殖模式下斑石鲷的食用品质特性并分析鱼肉差异的成因。结果表明:网箱养殖的斑石鲷质量长度指数K值为19.29 g/cm,稍高于池塘养殖模式,表明其运动能力更高,且影响极显著;在色差值指标上,池塘养殖的鱼肉肉色鲜亮饱和;在硬度、弹性、内聚性及恢复性等参数上,网箱养殖模式下的斑石鲷鱼片均大于池塘养殖模式;而在咀嚼性这项参数上,池塘养殖的斑石鲷鱼片为2.457 m J,表现更好。养殖模式仅对硬度和恢复性影响显著。
基金The authors gratefully acknowledge the support of the National Key Research and Development Program of China(No.2017YFA0303700)the National Natural Science Foundation of China(NSFC)(No.61922038)+1 种基金the Distinguished Young Scholars Fund of Jiangsu Province(No.BK20180004)the Fundamental Research Funds for the Central Universities(No.021014380118).W.H.gratefully acknowledges the support of the Tang Scholar Program.The authors declare no conflicts of interest。
文摘Overcoming chromatic aberrations is a vital concern in imaging systems in order to facilitate fullcolor and hyperspectral imaging.By contrast,large dispersion holds opportunities for spectroscopy and tomography.Combining both functions into a single component will significantly enhance its versatility.A strategy is proposed to delicately integrate two lenses with a static resonant phase and a switchable geometric phase separately.The former is a metasurface lens with a linear phase dispersion.The latter is composed of liquid crystals(LCs)with space-variant orientations with a phase profile that is frequency independent.By this means,a broadband achromatic focusing from 0.9 to 1.4 THz is revealed.When a saturated bias is applied on LCs,the geometric phase modulation vanishes,leaving only the resonant phase of the metalens.Correspondingly,the device changes from achromatic to dispersive.Furthermore,a metadeflector with tunable dispersion is demonstrated to verify the universality of the proposed method.Our work may pave a way toward active metaoptics,promoting various imaging applications.
基金国家自然科学基金(5167516061171048)+5 种基金河北省应用基础研究计划重点基础研究(15961701D)河北省高层次人才资助(GCC2014049)河北省人才工程培养经费(A201500503)天津市科技计划项目(15PTSYJC00260)江苏省双创人才资助项目European Horizon 2020 through Marie Sklodowska-Curie Individual Fellowship Scheme(707466-3DRM)项目资助
