简介:ThispaperhighlightstheresearchanddevelopmentactivitiesbeingdoneonurbanforestryinthePhilippines.TherolethatR&Dplaysinurbanforestryislikewisediscussedintheintroduction.Recommendedtreespeciesforurbanplantingarepresentedincludingtheircharacteristicsanddistribution.Researchesrelatedtourbanforestrybeingconductedarelistedwithashortdescriptionofeachproject.Developmentactivitiesonurbanforestryarelikewisediscussed.Finally,recommendedR&DagendaandresearchableareasbasedonthePhilippineAgenda21andtheDepartmentofEnvironmentandNaturalResources(DENR)R&DFrameworkarepresented.
简介:天然D-α-维生素E是一种高品质的天然维生素E。本文郑重介绍天然维生素E的分类,天然D-α-维生素E与合成维生素的差异以及天然D-α-维生素E先进的制备技术;国内外天然维生素E技术水平的差异;新昌制药厂在研制开发天然D-α-维生素E上所做的工作。