Methods and Techniques to Enhance the Production of Secondary Metabolites in Hairy Roots

Hairy roots culture is a new means to gain the plant secondary metabolites. How to enhance the production of secondary metabolites in hairy roots becomes a new hotspot recently. The authors summarize recent trends and results about the increase of the production of secondary metabolites in medicinal plant hairy roots. The change of culture conditions and the application of biotechnologies can enhance the production of secondary metabolites in hairy roots.     

甘薯基因组NBS-LRR类抗病家族基因挖掘与分析

NBS-LRR类基因家族是植物抗病R基因(Resistance gene)数量最多的一类,具有NBS (Nucleotide-binding site)和LRR (Leucine-leucine-repeat)结构域。甘薯(Ipomoea batatas)栽培种基因组已完成测序,但尚未注释,本研究对甘薯基因组序列进行外显子预测,得到甘薯染色体组全基因组蛋白序列,在此基础上进一步对NBS-LRR家族基因鉴定和分析表明,甘薯基因组中含有379个NBS-LRR家族基因,占全基因组基因总数的0.212%,其中N型亚家族120个,NL型103个, CNL型133个, TNL型22个, PN型1个。所有染色体上均有NBS-LRR家族基因分布,但数量明显不同,其中有60.9%的NBS-LRR基因序列呈簇状分布。NBS-LRR基因序列有15个保守结构域,在N端较为保守。研究结果为甘薯进一步开展NBS-LRR家族基因的功能研究和抗性育种提供了参考。     

Performance and Slip Control of Torque Converter Lock-up Clutch

The application of lock-up clutch slip control balances the fuel economy and drivability, and greatly improves the performance of hydraulic automatic transmission. The structure of the lock-up clutch and the friction material of lock-up clutch lining are discussed, a detailed research on varying characteristic due to engaging time during the lock-up clutch engagement is developed, too. By applying the slip control, lower fuel consumption is achieved.     

Data Collection Based on Web Services

To construct data warehouse with heterogeneous, self-governing and distributed database system is a challenge. Two problems have to be solved: one is how to collect data from heterogeneous data sources by an effective method, the other is how to clear up and change the format of the data collected from data sources. The opening and the interact-operation property of Web Services is Analyzed. A Data Collection System based on Web Services, which communicates with heterogeneous data sources with SOAP and HTTP, has been designed. A Data Collector is introduced to clear up and to transform data with composition technology. The pivotal XML technology of transforming and loading up the data are discussed.     

日光温室春茬马铃薯品种引进与筛选试验

为了筛选出适宜在赤峰地区温室种植的马铃薯品种,2016年引进7个马铃薯新品种,并在赤峰市农牧科学研究院温室内进行种植比较试验。试验结果表明,不同品种的脱毒马铃薯表现有显著差异,以费乌瑞它的生育期最短,为73 d,尤佳46的生育期最长,为84 d。内薯1号对早晚疫病抗性较强,不同品种的产量也存在明显的差异,以大西洋产量最高,其次是荷兰15、尤佳66、兴佳2号、内薯1号、尤佳46,产量最低的是费乌瑞它。表明大西洋、荷兰15可在赤峰地区日光温室内推广栽培。     

不同处理方法对滇重楼种子萌发及成苗的影响

通过对滇重楼种子进行不同处理,探讨其萌发时间、萌发率、成苗率的影响,选出最佳处理方法,以便今后指导实际育苗。进行去除假种皮、冷藏、不同浓度GA 3浸泡等对比处理,统计出(90,120,150,180,210 d)不同时间段的萌发情况及总萌发率和成苗率,并做方差分析。研究表明,假种皮对种子的萌发时间、萌发率、成苗率影响不大;低温冷藏对促进种子提早萌发有一定的作用;一定浓度的GA 3能够促进滇重楼种子的提前萌发,但浓度过高则会抑制种子的提早萌发,浓度为500 mg ·L ^-1 时萌发时间最佳;一定浓度的GA 3能提高滇重楼种子的萌发率及成苗率,浓度为300 mg ·L^-1 时相对萌发率(142%)及相对成苗率(158%)最大;但过高则会降低种子萌发率,减少成苗率,当GA 3浓度达到700 mg ·L^-1 时,萌发率及成苗率最低。     

一体式沼气安全脱硫反应器的操作优化和运行性能

文章采用正交试验考察了曝气量、气液比、脱硫液碱度对一体式沼气安全脱硫反应器脱硫效能的影响.试验结果表明,操作条件对反应器脱硫效能的影响程度为:曝气量＞脱硫液碱度＞气液比.在反应器容积气体负荷为32.5 m3·m-3d-1,硫化氢浓度为10 g · m-3的条件下,最佳操作条件组合为曝气量72 m3·m-3d-1,脱硫液碱度为4000 mg·L-1,气液比为0.625.在反应器容积气体负荷为40 m3·m-3d-1,硫化氢浓度高达20 g·m-3的条件下,反应器的容积硫化物去除率为0.74 kg·m-3d-1,沼气脱硫率为93.8％.一体式沼气安全脱硫反应器脱硫成本为0.11元·m-3和6元·(kg-S)-1.     

填料在生活污水处理系统中的应用与研究

目前,填料已广泛应用于各种生活污水处理系统中,填料的材质、生物降解性、比表面积、填料表面粗糙度、强度、密度和造价等,直接影响废水处理的效率和运行的可行性.文章将逐一介绍常见的生活污水处理的工艺以及填料在各种工艺中的应用情况、研究状况及新型填料的开发情况.