Mathers NJ, Xu Z (2003) Solid-state 13C NMR spectroscopy: characterization of soil organic matter under two contrasting residue management regimes in a 2-year-old pine plantation of subtropical Australia. Geoderma 114:19–31. : 10.1016/S0016-7061(02)00339-7...
NMR(~(13)CNMR,DEPT135) methods were used to elucidate the structure of methyl 2,7,7-. 该方法具有操作简单、产率高、时间短、环境友好的优点,并且应用13CNMR和DEPT135核磁技术确证了新化合物2,7,7-三甲基-5-氧代-4-(4-羟基-3-甲氧基苯基)-1,4,5,6,7,8-六氢喹啉-3-羧酸甲酯的结构。6...
Solid state 13C NMR spectroscopy on EPDM/PP/oil based thermoplastic vulcanizates in the melt. Polymer 2001;42(24):9745-9752Solid state 13 C NMR spectroscopy on EPDM/PP/oil based thermoplastic vulcanizates in the melt[J] . R Winters,J Lugtenburg,V.M Litvinov,M van Duin,H.J.M de ...
C.; Mahieu, N. Quantitative solid-state 13C NMR spectroscopy of organic matter fractions in lowland rice soils. Eur. J. Soil Sci. 2004, 55, 367-379.Smernik RJ, Olk DC, Mahieu N (2004) Quantitative solid-state 13 C NMR spectroscopy of organic matter fractions in lowland rice soils. ...
1.Crystalline structure of bamboo fiber was investigated by solid-state 13C-CP/MAS NMR spectroscopy,and was compared to ramie,flax and cotton.利用固态核磁共振碳谱分析研究了天然竹纤维的结晶结构,并与常规的天然纤维素纤维苎麻、亚麻和棉纤维进行了比较。 2)Solid-state MAS ~(27)Al NMR固态核磁共振谱 ...
Using this technique, it is now possible to produce spectra of "rare" nuclei (13C, 29Si, 15N etc.) which are resolved in terms of chemical structure. The analytical capabilities of NMR spectroscopy can be applied to the solid state: it may be that it is necessary to identify compounds ...
稻秆木素侧链13C同位素示踪及固体13CNMR分析顾瑞军1,谢益民1,曾绍琼1,伍红1,安田征市2(1.华南理工大学制浆造纸工程国家重点实验室,广州510640;2.日本名古屋大学农学部,名古屋464-8601)摘要在水稻(OryzasatioaL.)生长过程中,向其茎秆部节间的空腔分别注入在侧链!,",#位带有13C标记的松柏醇葡萄糖甙,得到13C标记...
Solid-state (13)C NMR spectroscopy was used to investigate the chemical shift of nanotube carbons on m- and s-SWNTs (metallic and semiconducting single-walled nanotubes) for samples with widely varying s-SWNT content, including samples highly enriched with nearly 100% m- and s-SWNTs. High...
Solid-stateNMRspectroscopygainedduringthelastyearsamanifoldincreaseinbothsignalintensityandspectralresolution.Thiswasachievedviadifferentimprovementslikehighermagneticfields,betterelectro-niccomponents,andespeciallythroughFourier-trans-formtechniques1).Withrespecttosolidstateandespe-ciallycarbonrelatedNMRspectroscopyfurther...
Aspects of solid state 13C CPMAS NMR spectroscopy in coals from the Balkan peninsula 来自 学术范 喜欢 0 阅读量: 34 作者: A Georgakopoulos 摘要: The cross-polarized magic-angle-spinning NMR (CPMAS-NMR) technique was used in this work to assess the carbon distribution in coals of different ...