Quantitative amendment of high-field 13C NMR spectra of coals

来源 :中国科学通报：英文版 | 被引量 : 0次 | 上传用户：lishuangjie2009

【摘要】

：

HIGH-RESOLUTION solid state 13C NMR spectroscopy has been a useful tool for the study of coalstructure.By the use of cross polarization（CP）,magic angle

【出处】

：

中国科学通报：英文版

【发表日期】

：

1997年10期

【关键词】

：

13C NMR COAL structure QUANTITATIVE amendment.

下载到本地 , 更方便阅读

下载此文赞助VIP

声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架

论文部分内容阅读

HIGH-RESOLUTION solid state 13C NMR spectroscopy has been a useful tool for the study of coalstructure.By the use of cross polarization（CP）,magic angle spinning（MAS）and protonhigh-power decoupling（HPD）techniques,high-resolution soli

其他文献

On the singular matrix variate beta distribution

期刊

A remark on Ishikawa iteration

LET E be a real Banach space with norm ||·||,E~* a uniformly convex dual space.Let K bea nonempty closed convex and bounded subset of E,T:K→K a continuous

期刊

ISHIKAWAITERATIONSTRONGpseudocontractlonReich’sinequality.Ishikawa iterati

Modes of occurrence of arsenic in high-arsenic coal by extended X-ray absorption fine structure spec

集中范围作为并且在六晚二叠的高砷的煤的 Sb 从 Xingren 和 Xingyi 收集了，贵州省是 94.1 渭 g 路 g-1-3.2% 和 8.1 渭 g 路 g-1-120 渭 g 路 g-1 分别地。基于矿物学的分析，

期刊

high-arsenicCOALmodesofoccurrenceSYNCHROTRONradiationEXAFSspectroscopy.

Neutron-irradiated Si by positron annihilation

SILICON is a quite important material in the application of energy resources technology. With the development of ion-implantation technique and the increasing i

期刊

neutron-irradiatedSIPOSITRONANNIHILATIONvacancy.neutron-irradiated Si posi

Structural phase transition in nanostructured γ-Fe2O3

DUE to their specific physical,chemical and mechanical properties and large application proba-bility in many fields,nanostructured materials have been developin

期刊

NANOSTRUCTUREDΓ-FE2O3DIFFERENTIALthermalanalysis(DTA)XRDmicrostructlires

Carbon isotope anomaly in marbles associated with eclogites from the Dabie Mountains

这是在从 Dabie 山与 UHP eclogites 联系的云石的碳同位素异例的一份报告。结果在 UHP 变态期间把限制放在外壳披风相互作用的度上。

期刊

carbonisotopesMARBLEandECLOGITEUHPmetamorphismcrust_mantleinteractionDA

Os isotopic composition of the earth’s primitive upper mantle

锇为原始上面的披风(PUM ) 从 0.126 ～ 0.127 的同位素的比率 of187Os/188Os 根据关联 between187Os/188Os 和导出披风的捕虏体和 orogenic 橄榄岩的 Al2O3 被获得，它与 Allegr

期刊

PRIMITIVEupperMANTLEOSisotopemantle_derivedperidotite.primitive upper man

Emittance and brightness measurement of a high voltage pseudospark electron beam

这是由能源所幅射的每单位面积功率的一份报告和在一台脉搏线加速器驾驶的一台 pseudospark 分泌物设备生产的一根电子横梁的亮度测量。一台十差距的 pseudospark 设备在 200

期刊

PSEUDOSPARKELECTRONBEAMEMITTANCEbrightness.pseudospark electron beamemitta

Source of ore-forming material and metallogenic age of the Zheboshan gold deposit, western Sichuan P

Zheboshan 金存款，它在四川的边阶上位于鈥淕o ld 三角鈥 ? 区域。Gansu 和 Shaanxi 省，是很复杂的微罚款的传播金存款。就 ICPMS 大小和 Rb 和 Sr 同位素数据而言， orcforming

期刊

ICP_MSelementRb_Srisotopesore_formingmaterialMETALLOGENICage.ICP-MSe

Clay minerals in paleosols of cretaceous age in Istria, Croatia

Greenish clays often occur as thin layers in Early Cretaceous shallow-water carbonatesediments of Istria where they mark the top of fining upwards sequences. Wh

期刊

ISTRIAPALEOSOLSclayMINERALSillitizationFININGupwardsSEQUENCESsubaeriale

Quantitative amendment of high-field <sup>13</sup>C NMR spectra of coals

与本文相关的学术论文