荷兰壳牌全球解决方案（Shell Global Solutions）公司开发了一种控制催化裂化（FCCs）装置再生器氮氧化合物（NOx）排放的方法。据悉，利用该方法，首个商业化装置的NOx排放量降至40μL/L以下（且在特定条件下可以降低至25μL/L）。该...荷兰壳牌全球解决方案（Shell Global Solutions）公司开发了一种控制催化裂化（FCCs）装置再生器氮氧化合物（NOx）排放的方法。据悉，利用该方法，首个商业化装置的NOx排放量降至40μL/L以下（且在特定条件下可以降低至25μL/L）。该公司负责催化裂化的经理Ye Mon Chert称，展开更多
The abnormal metabolic activity of the tumor can increase the oxygen consumption in tumor cells,and the poor blood perfusion often happens in tumor regions as well,which are the main reasons that result in a hypoxic s...The abnormal metabolic activity of the tumor can increase the oxygen consumption in tumor cells,and the poor blood perfusion often happens in tumor regions as well,which are the main reasons that result in a hypoxic situation in the tumor.A fluorescence probe,AQD,with selective response toward hypoxia was designed for the detection of hypoxic tumor cells,which was obtained by the covalent connection of a large planar conjugated fluorophore with good fluorescence stability and a N,N-dimethylaniline moiety via the azo bond.The introduction of the azo bond in AQD caused significant fluorescence emission quenching,and the probe was reduced under hypoxic conditions to release the fluorophore via breaking the azo bond,resulting in the gradual recovery of fluorescence emission.Probe AQD exhibited a remarkable fluorescence response in hypoxic conditions,high selectivity,and good biocompatibility,which was successfully used for the imaging of hypoxic tumor cells and realized the detection of hypoxic A549 cells.展开更多
基金supported by the National Natural Science Foundation of China(50876097)Program for New Century Excellent Talents in University of China(NCET-06-0546)~~
文摘荷兰壳牌全球解决方案（Shell Global Solutions）公司开发了一种控制催化裂化（FCCs）装置再生器氮氧化合物（NOx）排放的方法。据悉，利用该方法，首个商业化装置的NOx排放量降至40μL/L以下（且在特定条件下可以降低至25μL/L）。该公司负责催化裂化的经理Ye Mon Chert称，
文摘The abnormal metabolic activity of the tumor can increase the oxygen consumption in tumor cells,and the poor blood perfusion often happens in tumor regions as well,which are the main reasons that result in a hypoxic situation in the tumor.A fluorescence probe,AQD,with selective response toward hypoxia was designed for the detection of hypoxic tumor cells,which was obtained by the covalent connection of a large planar conjugated fluorophore with good fluorescence stability and a N,N-dimethylaniline moiety via the azo bond.The introduction of the azo bond in AQD caused significant fluorescence emission quenching,and the probe was reduced under hypoxic conditions to release the fluorophore via breaking the azo bond,resulting in the gradual recovery of fluorescence emission.Probe AQD exhibited a remarkable fluorescence response in hypoxic conditions,high selectivity,and good biocompatibility,which was successfully used for the imaging of hypoxic tumor cells and realized the detection of hypoxic A549 cells.
