聚3-羟基丁酸酯(PHB)是生物可完全降解塑料,是解决"白色污染"的有效途径.3-羟基丁酸甲酯是制备可降解塑料(PHB)的主要单体,目前尚未工业化生产,因此研究PHB单体的合成工艺具
水稻是世界上最重要的粮食作物之一,也是研究禾本科植物和单子叶植物研究的模式作物。随着水稻基因组测序的完成,大量水稻突变库的创建,加快了水稻理论研究的步伐,明显缩短了基因克隆的周期,使水稻基因功能的研究进入了后基因组研究的时代。近年来,许多重要农艺性状的基因被成功的克隆,如花期、育性、叶形、抗病性等。开花时间,在水稻中又称抽穗期,是营养生长向生殖生长的过渡,所以对控制水稻开花基因的克隆,将有助于理解
化石能源的不断燃烧利用，人们正面临着能源危机、环境危机。各国正在努力寻找开发新型绿色能源。能源战略已经成为各国战略中的战略。氢能，具有来源丰富、高效清洁、可再生等优
Mesenchymal Stem Cells (MSCs) in human tissues are crucial to processes such as tissue regeneration and healing,and are likely to be involved in many diseases i
Germline stem cells (GSCs) in the Drosophila ovary are a productive model system for studying stem cell self-renewal and differentiation because of exceptional
Polycomb (PC) repressive complexes (PRC) epigenetically repress the expression of developmentally important genes.However,not much is known about mechanisms tha
Somatic cells can be reprogrammed into induced pluripotent stem cells (iPSCs) by transduction of reprogramming factors,including Oct4,Sox2,Klf4,and c-Myc.A coor
化学机械抛光(chemical mechanical polishing,CMP)是高精密光学器件和超大规模集成电路制造技术中最为有效的平坦化技术之一。随着高精尖技术的发展,对工件表面精度的要求越
Plum pox virus(PPV)is a quarantine pathogen in China.It is the causal agent of sharka or plum pox,probably the most serious viral disease affecting trees of
哈茨木霉是一种重要的生物防治真菌,能拮抗多种植物病原菌如立枯丝核菌、齐整小核菌、尖孢镰孢菌、烟草疫霉等。在哈茨木霉拮抗病原菌的过程中病原菌会产生物理或化学信号分