The NMR spectroscopic characteristics and the method for structure determination of the sugar moiety of C21 steroid glycosides were summarized.
结合国内外相关文献,综述了近15年来萝藦科鹅绒藤属植物C21甾体类化学成分的研究进展,并对C21甾体苷化合物中糖单元的核磁共振谱学特征及其结构测定方法进行了小结。
The structure of the modifying polymer was identified by IR,()~_(13)C NMR,and Py-GC/MS.
通过化学分离从改性沥青卷材中分离出高聚物,然后借助于红外光谱、核磁共振碳谱、裂解气相色谱/质谱联用仪对聚合物的结构进行了分析。
Nuclear magnetic resonance(NMR),infrared(IR),and thermal analysis(TA)have been used to characterize the polymers.
本文介绍了红外光谱 (IR)、核磁共振法、热分析及电镜法在表征SAP中的应
The bulk polymers were charactrerized by NMR, IR, DSC and thethermogravimetry (TG).
来用连续加料法,以二元醇-KOH为引发剂合成一组不同组成的环氧乙烷-环氧丙烷无规共聚醚,并用核磁共振、红外光谱、示差扫描量热计和热失重等方法对其本体聚合物,用浊点和表面张力测定的方法对其水溶液,进行系统的表征。
MR SCANNER-A NEW GENERATION NUCLEAR MAGNETIC RESONANCE (NMR) LOGGING TOOL OF SCHLUMBERGER;
斯伦贝谢新一代核磁共振测井仪MR Scanner
NMR Analysis of Ortho/Para Hydroxymethyl in Phenyl Phenolic Resin and Its Characters;
苯基苯酚型酚醛树脂中羟甲基邻/对位异构的核磁共振分析及性能影响
Temperature Effect on NMR Relaxation Time for Bulk Fluids and Fluids in Rocks;
储层流体及其在岩石孔隙中的核磁共振弛豫温度特性
The nuclear magnetic resonance (NMR) logging has the best advantages compared with the conventional well logging.
核磁共振测井可以提供直观、准确的孔隙度、渗透率等参数,它所提供的参数与岩石骨架和矿物无关。
The pulsed nuclear magnetic resonance (NMR) characteristics of various samples are studied.
超小型核磁共振成像仪已经应用在近代物理实验教学中,该仪器可以研究各种样品的脉冲核磁共振。