In this work, a novel long-wavelength fluorescence probe, 3-(4-chloro-6-methylamino-1,3,5-triazinylamino)-7-dimethylamino-2-methylphenazine, was synthesized by the reaction of neutral red and methylamine subsequently ...In this work, a novel long-wavelength fluorescence probe, 3-(4-chloro-6-methylamino-1,3,5-triazinylamino)-7-dimethylamino-2-methylphenazine, was synthesized by the reaction of neutral red and methylamine subsequently with cyanuric chloride, and its recognition behavior for thymine together with its spectroscopic properties in different solvents was studied. The results show that the fluorescence probe can be selectively quenched by thymine instead of guanine, suggesting that the fully complementary hydrogen bonding plays a key role in such a recognition process.展开更多
利用正交试验探讨了耕植土、有机肥、外加剂等因素对轻质绿化混凝土的有机质、速效N、速效P、速效K的含量等主要肥力指标及180 d pH值的影响.结果表明:各因素对轻质绿化混凝土肥力有明显影响,其中有机肥对有机质、速效N、速效P的影响均...利用正交试验探讨了耕植土、有机肥、外加剂等因素对轻质绿化混凝土的有机质、速效N、速效P、速效K的含量等主要肥力指标及180 d pH值的影响.结果表明:各因素对轻质绿化混凝土肥力有明显影响,其中有机肥对有机质、速效N、速效P的影响均达到极显著水平,对速效K的影响达到显著水平;耕植土对有机质的影响达到极显著水平,对速效N、速效K的影响均达到显著水平,对速效P的影响不大;外加剂对肥力指标有一定影响,但未达到显著水平.各因素对180 d pH值没有显著影响.综合最优水平组合为A3B3C3,即耕植土24.2 kg、有机肥3.5 kg、外加剂0.7 kg,通过主要物理性质和黑麦草生长质量的验证性试验,说明了最优组合具有良好的植物相容性.展开更多
文摘In this work, a novel long-wavelength fluorescence probe, 3-(4-chloro-6-methylamino-1,3,5-triazinylamino)-7-dimethylamino-2-methylphenazine, was synthesized by the reaction of neutral red and methylamine subsequently with cyanuric chloride, and its recognition behavior for thymine together with its spectroscopic properties in different solvents was studied. The results show that the fluorescence probe can be selectively quenched by thymine instead of guanine, suggesting that the fully complementary hydrogen bonding plays a key role in such a recognition process.
文摘利用正交试验探讨了耕植土、有机肥、外加剂等因素对轻质绿化混凝土的有机质、速效N、速效P、速效K的含量等主要肥力指标及180 d pH值的影响.结果表明:各因素对轻质绿化混凝土肥力有明显影响,其中有机肥对有机质、速效N、速效P的影响均达到极显著水平,对速效K的影响达到显著水平;耕植土对有机质的影响达到极显著水平,对速效N、速效K的影响均达到显著水平,对速效P的影响不大;外加剂对肥力指标有一定影响,但未达到显著水平.各因素对180 d pH值没有显著影响.综合最优水平组合为A3B3C3,即耕植土24.2 kg、有机肥3.5 kg、外加剂0.7 kg,通过主要物理性质和黑麦草生长质量的验证性试验,说明了最优组合具有良好的植物相容性.