为探究全球聚羟基烷酸酯(PHA)研究的学者科研合作紧密度、时空特征和未来趋势,基于文献计量可视化分析软件CiteSpace,以Web of Science(WoS)数据库为数据源,对2013—2022年收录的论文进行学者科研合作的归纳分析。研究结果表明:2013—2...为探究全球聚羟基烷酸酯(PHA)研究的学者科研合作紧密度、时空特征和未来趋势,基于文献计量可视化分析软件CiteSpace,以Web of Science(WoS)数据库为数据源,对2013—2022年收录的论文进行学者科研合作的归纳分析。研究结果表明:2013—2022年聚羟基烷酸酯研究的科研合作紧密度较小,全球范围的合作较为松散,合作关系存在明显的个人、机构和地缘指向特征,合作关系表现出“强强合作”的特征,并且合作机构以高校为主,其中实力雄厚的研究机构发文量相对也较高;发文量最多的国家依次是中国、印度、美国、意大利和西班牙,其中美国的发文量虽高,但研究者人数较少,成果基本集中于部分高产研究者。今后,研究者不仅要注重地区之间的合作,还应注意学科之间的合作,跨地域、跨学科可以增加研究驱动力。展开更多
It is found that a number of microorganisms in activated sludge in the process of waste water treatment can produce a variety of nomo and co poly 3 hydroxyalkanoates with a wide range of properties, which would be one...It is found that a number of microorganisms in activated sludge in the process of waste water treatment can produce a variety of nomo and co poly 3 hydroxyalkanoates with a wide range of properties, which would be one of the methods to low the cost of PHA. In this paper, the biosynthesis of polyhydroxyalkanoates(PHA) by mixed bacterium growth on waste water was studied. The chemical structure of PHA, isolated from activated sludge in waste water treatment process using sodium acetate as attachment carbon source, was analyzed by 1H NMR spectroscopy and gas chromatography mass spectrometry. The PHA produced from activated sludge is a copolymer composed of 9 different monomer units, 3 hydroxybutyrate, 4 hydroxypentanoate, 3 hydroxydodecanoate, 3 hydroxy tetradecanoate, 3 hydroxy 9 hexadecenoate, 3 hydroxyhexadecanoate, 3 hydroxy 11 octadecenoate, 3 hydroxy 9 octade\|cenoate, 3 hydroxyoctadecanoate. [WT5HZ]展开更多
文摘为探究全球聚羟基烷酸酯(PHA)研究的学者科研合作紧密度、时空特征和未来趋势,基于文献计量可视化分析软件CiteSpace,以Web of Science(WoS)数据库为数据源,对2013—2022年收录的论文进行学者科研合作的归纳分析。研究结果表明:2013—2022年聚羟基烷酸酯研究的科研合作紧密度较小,全球范围的合作较为松散,合作关系存在明显的个人、机构和地缘指向特征,合作关系表现出“强强合作”的特征,并且合作机构以高校为主,其中实力雄厚的研究机构发文量相对也较高;发文量最多的国家依次是中国、印度、美国、意大利和西班牙,其中美国的发文量虽高,但研究者人数较少,成果基本集中于部分高产研究者。今后,研究者不仅要注重地区之间的合作,还应注意学科之间的合作,跨地域、跨学科可以增加研究驱动力。
文摘It is found that a number of microorganisms in activated sludge in the process of waste water treatment can produce a variety of nomo and co poly 3 hydroxyalkanoates with a wide range of properties, which would be one of the methods to low the cost of PHA. In this paper, the biosynthesis of polyhydroxyalkanoates(PHA) by mixed bacterium growth on waste water was studied. The chemical structure of PHA, isolated from activated sludge in waste water treatment process using sodium acetate as attachment carbon source, was analyzed by 1H NMR spectroscopy and gas chromatography mass spectrometry. The PHA produced from activated sludge is a copolymer composed of 9 different monomer units, 3 hydroxybutyrate, 4 hydroxypentanoate, 3 hydroxydodecanoate, 3 hydroxy tetradecanoate, 3 hydroxy 9 hexadecenoate, 3 hydroxyhexadecanoate, 3 hydroxy 11 octadecenoate, 3 hydroxy 9 octade\|cenoate, 3 hydroxyoctadecanoate. [WT5HZ]
