利用烟属的普通烟草品种龙烟2号与曼陀罗属的曼陀罗进行属间远缘杂交育种,培育含阿托品及莨菪烷生物碱的新型烟草,满足患哮喘、咳嗽等病症,但又难以戒烟的消费者的需要。采取无性与有性杂交相结合的方法克服杂交不孕。经酶谱及R A PD分...利用烟属的普通烟草品种龙烟2号与曼陀罗属的曼陀罗进行属间远缘杂交育种,培育含阿托品及莨菪烷生物碱的新型烟草,满足患哮喘、咳嗽等病症,但又难以戒烟的消费者的需要。采取无性与有性杂交相结合的方法克服杂交不孕。经酶谱及R A PD分子检测,稳定的杂种后代含有双亲的遗传物质;医药成分与单料烟烟气检测结果表明,稳定的杂种后代,都含阿托品、东莨菪碱;镜检结果表明,F1-F18代细胞染色体呈杂合状态;卷烟工业验证其具有较高的利用价值。展开更多
A laboratory-scale intermittent aeration bioreactor was investigated to treat biologically pretreated coal gasification wastewater that was mainly composed of NH_3-N and phenol.The results showed that increasing pheno...A laboratory-scale intermittent aeration bioreactor was investigated to treat biologically pretreated coal gasification wastewater that was mainly composed of NH_3-N and phenol.The results showed that increasing phenol loading had an adverse effect on NH_3-N removal;the concentration in effluent at phenol loading of 40 mg phenol/（L·day） was 7.3 mg/L, 36.3%of that at 200 mg phenol/（L·day）. The enzyme ammonia monooxygenase showed more sensitivity than hydroxylamine oxidoreductase to the inhibitory effect of phenol, with32.2% and 10.5% activity inhibition, respectively at 200 mg phenol/（L·day）. Owing to intermittent aeration conditions, nitritation-type nitrification and simultaneous nitrification and denitrification（SND） were observed, giving a maximum SND efficiency of 30.5%.Additionally, ammonia oxidizing bacteria（AOB） and denitrifying bacteria were the main group identified by fluorescent in situ hybridization. However, their relative abundance represented opposite variations as phenol loading increased, ranging from 30.1% to 17.5%and 7.6% to 18.2% for AOB and denitrifying bacteria, respectively.展开更多
文摘利用烟属的普通烟草品种龙烟2号与曼陀罗属的曼陀罗进行属间远缘杂交育种,培育含阿托品及莨菪烷生物碱的新型烟草,满足患哮喘、咳嗽等病症,但又难以戒烟的消费者的需要。采取无性与有性杂交相结合的方法克服杂交不孕。经酶谱及R A PD分子检测,稳定的杂种后代含有双亲的遗传物质;医药成分与单料烟烟气检测结果表明,稳定的杂种后代,都含阿托品、东莨菪碱;镜检结果表明,F1-F18代细胞染色体呈杂合状态;卷烟工业验证其具有较高的利用价值。
基金supported by State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (No. 2015DX02)
文摘A laboratory-scale intermittent aeration bioreactor was investigated to treat biologically pretreated coal gasification wastewater that was mainly composed of NH_3-N and phenol.The results showed that increasing phenol loading had an adverse effect on NH_3-N removal;the concentration in effluent at phenol loading of 40 mg phenol/（L·day） was 7.3 mg/L, 36.3%of that at 200 mg phenol/（L·day）. The enzyme ammonia monooxygenase showed more sensitivity than hydroxylamine oxidoreductase to the inhibitory effect of phenol, with32.2% and 10.5% activity inhibition, respectively at 200 mg phenol/（L·day）. Owing to intermittent aeration conditions, nitritation-type nitrification and simultaneous nitrification and denitrification（SND） were observed, giving a maximum SND efficiency of 30.5%.Additionally, ammonia oxidizing bacteria（AOB） and denitrifying bacteria were the main group identified by fluorescent in situ hybridization. However, their relative abundance represented opposite variations as phenol loading increased, ranging from 30.1% to 17.5%and 7.6% to 18.2% for AOB and denitrifying bacteria, respectively.
