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- 2D NMR log 二维核磁共振测井
- 2D NMR logging 二维核磁共振测井
- Structure determination of triterpenoid saponins is based on the chemical methods and spectral evidences especial 1D and 2D NMR techniques. 三萜皂苷的结构测定多采用波谱学方法结合化学方法进行研究,其中核磁共振波谱的应用最为有效。
- The structure of neostellerin, which was elucidated by NMR, especially 2D NMR analysis, was different from other daphnane type diterpenes isolated from this plant. 其中新狼毒素与其它从该种植物中所分离得到的瑞香烷型二萜类化合物有不同之处。
- Methods The compounds of Opuntia vulgaris were isolated by chromatography of Amberlite Dowex 50 and silica gel, and identified by means of UV, IR, MS, 1D and 2D NMR. 方法 采用硅胶柱色谱法、离子交换色谱法分离仙人掌化学成分 ,用波谱学方法鉴定结构。
- The possible mechanism were proposed,in the aspects of the conformation, structure and molecular interaction, about theinfluence of phsophorylation on peptidyl-prolyl imide bond cis/transisomerization through 2D NMR and CD studies. 通过二维核磁和CD等手段,从构象、空间结构、分子间作用力等方面,探讨了磷酸化对肽脯酰胺键顺反异构产生影响的可能原因。
- Computer programs for automatic assignment of 2D NMR spectra have been proposed elsewhere, among which CAPRI (computer-aided peak resonance identification) is one applicable to proteins. 2DNMR谱的自动归属是核磁共振发展的一个方向，CAPRI即是蛋白质1H谱的计算机辅助谱峰归属的一种程序。
- With the experiments of variable temperature(VT),the ideal 1D and 2D NMR spectra were obtained for the compound (molecula formula:C15H16N2 FBr),and the structure of this compound was successfully elucidated. 本工作通过变温实验获取化合物(分子式为C_(16)H_(16)N_(2) FBr)理想的1D,2D核磁共振谱图,在此基础上顺利地完成该化合物的结构确定。
- In petroleum industry,the NMR techniques include NMR logging,NMR mud log,NMR while drilling and DMT to identify fluids using NMR. 石油工程中的核磁共振技术包括核磁共振测井技术、核磁共振录井技术、随钻核磁共振技术以及利用核磁共振技术进行流体识别的模块式地层测试技术等。
- Keywords soft coral;diterpene;2D NMR; 软珊瑚;二萜;二维谱;
- Prammer M G.A new multiband generation of NMR logging tools[J].SPE Reservior Evaluation &Engineering,2001.51-58. 黄坚;张红杰;赵卫平;等.;测井资料质量控制与评价[J]
- The most difficult part in NMR logging system is the detecting,amplifying and acquiring modules of the weak signals. 核磁共振测井中技术难度最大的部分,就是对微弱信号的检测放大及采集,需要采集的几纳伏的正弦信号伴随有极大的噪声。
- In order to further understand the oil, gas and water features of the block, the author analyzed the NMR logging for 10 wells of the block. 为了进一步认识该区块油气水层特征,对该区块的10口井进行了核磁共振录井分析。
- Description of carbonate reservoirs with NMR log analysis method 用核磁共振测井资料评价碳酸盐岩等复杂岩性储集层
- Andalso,in this text , the synthetical use of NMR logging,FMI logging and the GRspectrum et,is the first time.And building the identify type of lithofacies is alsooriginality. 首次综合核磁共振、成像、自然伽马能谱等多项测井信息,建立研究工区测井岩相的识别模式。
- THE CHEMICAL STRUCTURES OF A PAIR OF EPIMERS STUDIED BY 2D NMR 用2DNMR研究一对差向异构体的化学结构
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- Keywords NMR;2D NMR;Evodia rutaecarpa;Limonin;Structure; 核磁共振;二维核磁共振;吴茱萸;吴茱萸内酯;结构;
- Keywords endo-isocamphanyl methanol;2D NMR spectroscopy; 内型异莰烷基甲醇;二维核磁共振波谱技术;
- I reached for a floating log with my foot. 我伸脚去钩取一段漂浮着的木头。
