To improve the efficiency of the carbon dioxide cycling process and to reduce the regeneration energy consumption, a sterically hindered amine of 2-amino-2-methyl-1- propranol （AMP） was investigated to determine its...To improve the efficiency of the carbon dioxide cycling process and to reduce the regeneration energy consumption, a sterically hindered amine of 2-amino-2-methyl-1- propranol （AMP） was investigated to determine its regeneration behavior as a CO2 absorbent. The CO2 absorption and amine regeneration characteristics were experimentally examined under various operating conditions. The regeneration efficiency increased from 86.2% to 98.3% during the temperature range of 358 to 403 K. The most suitable regeneration temperature for AMP was 383 K, in this experiment condition, and the regeneration efficiency of absorption/regeneration runs descended from 98.3% to 94.0%. A number of heat-stable salts （HSS） could cause a reduction in CO2 absorption capacity and regeneration efficiency. The results indicated that aqueous AMP was easier to regenerate with less loss of absorption capacity than other amines, such as, monoethanolamine （MEA）, diethanolamine （DEA）, diethylenetriamine （DETA）, and N-methyldiethanolamine （MDEA）.展开更多
本研究选取21个（包括16个籼稻品种和5个粳稻品种）在农业生产上具有重要应用价值的水稻品种，对它们进行成熟胚的组培再生能力以及转基因效率的考察。结果表明：以NBm诱导培养基进行愈伤诱导时，各水稻品种的愈伤诱导率介于30．37％和7...本研究选取21个（包括16个籼稻品种和5个粳稻品种）在农业生产上具有重要应用价值的水稻品种，对它们进行成熟胚的组培再生能力以及转基因效率的考察。结果表明：以NBm诱导培养基进行愈伤诱导时，各水稻品种的愈伤诱导率介于30．37％和72．46％之间；以NBm和DL3分化培养基对各水稻品种不同日龄愈伤分别进行植株再生培养，并以植株再生率（plant regeneration rate，RR）和每粒愈伤平均出苗数（the mean number of regenerated shoots，NRS）对再生能力进行考察时，不同水稻品种的组培再生能力表现较为复杂，同时受到基因型、愈伤日龄和培养基成分的重大影响。在NBm分化培养基上，以日龄15d的T0974愈伤RR（84．00％）和NRS（2．96）最高，在DL3分化培养基上，以日龄15d的T0974愈伤RR（73．33％）和粤泰B愈伤NRS（3．55）分别为最高。此后，利用根癌农杆菌介导的转基因方法对其中12个水稻品种进行成基因转化实验，经PCR验证后发现，共成功实现7个品种的＆基因转化，各水稻品种的转化效率介于0～25％之间，且与其再生能力相关。展开更多
文摘To improve the efficiency of the carbon dioxide cycling process and to reduce the regeneration energy consumption, a sterically hindered amine of 2-amino-2-methyl-1- propranol （AMP） was investigated to determine its regeneration behavior as a CO2 absorbent. The CO2 absorption and amine regeneration characteristics were experimentally examined under various operating conditions. The regeneration efficiency increased from 86.2% to 98.3% during the temperature range of 358 to 403 K. The most suitable regeneration temperature for AMP was 383 K, in this experiment condition, and the regeneration efficiency of absorption/regeneration runs descended from 98.3% to 94.0%. A number of heat-stable salts （HSS） could cause a reduction in CO2 absorption capacity and regeneration efficiency. The results indicated that aqueous AMP was easier to regenerate with less loss of absorption capacity than other amines, such as, monoethanolamine （MEA）, diethanolamine （DEA）, diethylenetriamine （DETA）, and N-methyldiethanolamine （MDEA）.
文摘本研究选取21个（包括16个籼稻品种和5个粳稻品种）在农业生产上具有重要应用价值的水稻品种，对它们进行成熟胚的组培再生能力以及转基因效率的考察。结果表明：以NBm诱导培养基进行愈伤诱导时，各水稻品种的愈伤诱导率介于30．37％和72．46％之间；以NBm和DL3分化培养基对各水稻品种不同日龄愈伤分别进行植株再生培养，并以植株再生率（plant regeneration rate，RR）和每粒愈伤平均出苗数（the mean number of regenerated shoots，NRS）对再生能力进行考察时，不同水稻品种的组培再生能力表现较为复杂，同时受到基因型、愈伤日龄和培养基成分的重大影响。在NBm分化培养基上，以日龄15d的T0974愈伤RR（84．00％）和NRS（2．96）最高，在DL3分化培养基上，以日龄15d的T0974愈伤RR（73．33％）和粤泰B愈伤NRS（3．55）分别为最高。此后，利用根癌农杆菌介导的转基因方法对其中12个水稻品种进行成基因转化实验，经PCR验证后发现，共成功实现7个品种的＆基因转化，各水稻品种的转化效率介于0～25％之间，且与其再生能力相关。
