发布求助
文献互助 智能选刊 最新文献

Journal of Magnetic Resonance (1969)最新文献

筛选
英文 中文
Double DEPT using adiabatic pulses. Indirect heteronuclear T1 measurement with B1 insensitivity 双DEPT使用绝热脉冲。B1不敏感的间接异核T1测量
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90224-U
Seong-Gi Kim, Michael Garwood
{"title":"Double DEPT using adiabatic pulses. Indirect heteronuclear T1 measurement with B1 insensitivity","authors":"Seong-Gi Kim, Michael Garwood","doi":"10.1016/0022-2364(92)90224-U","DOIUrl":"10.1016/0022-2364(92)90224-U","url":null,"abstract":"","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 660-667"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90224-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85565248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Hyperfine sublevel correlation spectroscopy (HYSCORE ) of disordered solids 无序固体的超精细亚能级相关光谱(HYSCORE)
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90215-S
J.J Shane, P Höfer , E.J Reijerse, E de Boer
{"title":"Hyperfine sublevel correlation spectroscopy (HYSCORE ) of disordered solids","authors":"J.J Shane, P Höfer , E.J Reijerse, E de Boer","doi":"10.1016/0022-2364(92)90215-S","DOIUrl":"10.1016/0022-2364(92)90215-S","url":null,"abstract":"","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 596-604"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90215-S","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81002818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 49
Measuring diffusion in inhomogeneous systems in imaging mode using antisymmetric sensitizing gradients 利用反对称敏化梯度在成像模式下测量非均匀系统中的扩散
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90210-X
Xiaole Hong, W Thomas Dixon
{"title":"Measuring diffusion in inhomogeneous systems in imaging mode using antisymmetric sensitizing gradients","authors":"Xiaole Hong,&nbsp;W Thomas Dixon","doi":"10.1016/0022-2364(92)90210-X","DOIUrl":"10.1016/0022-2364(92)90210-X","url":null,"abstract":"<div><p>A principle for self-diffusion pulse-sequence design which cancels harmful cross terms involving both imaging and sample susceptibility-induced gradients by using antisymmetric diffusion-sensitizing-gradient pulses is proposed. A water diffusion coefficient of 1.94 × 10<sup>−5</sup> cm<sup>2</sup> s<sup>−1</sup> was obtained by the cross-term-free sequence, a bipolar sensitizing-gradient pulse (BGP) scheme, while the conventional method gave 2.22 and 1.60 × 10<sup>−5</sup> cm<sup>2</sup> s<sup>−1</sup> with sensitizing gradient running parallel and antiparallel to the imaging gradient, respectively. A diffusion coefficient of 1.38 × 10<sup>−5</sup> cm<sup>2</sup> s<sup>−1</sup> was obtained from an apple, in fair agreement with 1.56 × 10<sup>−5</sup> cm<sup>2</sup> s<sup>−1</sup> for its juice, using the BGP sequence. Although the conventional technique gave similar values for apple juice, it gave only about half as large a value for the whole apple, presumably because of internal gradients from inhomogeneous susceptibility. The rms value of these local gradients in the apple was estimated as 6.0 kHz/cm in our 200 MHz instrument.</p></div>","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 561-570"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90210-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79850730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 62
Isotopes in the physical and biomedical sciences. vol. 1. labelled compounds (part B) 同位素在物理和生物医学中的应用。卷。1。标记化合物(B部分)
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90228-Y
W.S.B
{"title":"Isotopes in the physical and biomedical sciences. vol. 1. labelled compounds (part B)","authors":"W.S.B","doi":"10.1016/0022-2364(92)90228-Y","DOIUrl":"https://doi.org/10.1016/0022-2364(92)90228-Y","url":null,"abstract":"","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Page 672"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90228-Y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136548831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A simple approach to measuring spin diffusion of abundant nuclei in dipolar-broadened solids 测量偶极加宽固体中丰富原子核自旋扩散的一种简单方法
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90212-P
Jianzhi Hu, Chaohui Ye
{"title":"A simple approach to measuring spin diffusion of abundant nuclei in dipolar-broadened solids","authors":"Jianzhi Hu,&nbsp;Chaohui Ye","doi":"10.1016/0022-2364(92)90212-P","DOIUrl":"10.1016/0022-2364(92)90212-P","url":null,"abstract":"","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 576-581"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90212-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80574163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Optimized recording of heteronuclear multidimensional NMR spectra using pulsed field gradients 利用脉冲场梯度优化记录异核多维核磁共振谱
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90221-R
Ad Bax , Susan S Pochapsky
{"title":"Optimized recording of heteronuclear multidimensional NMR spectra using pulsed field gradients","authors":"Ad Bax ,&nbsp;Susan S Pochapsky","doi":"10.1016/0022-2364(92)90221-R","DOIUrl":"10.1016/0022-2364(92)90221-R","url":null,"abstract":"","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 638-643"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90221-R","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83261940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 249
High pressure NMR 高压核磁共振
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90229-Z
W.S.B
{"title":"High pressure NMR","authors":"W.S.B","doi":"10.1016/0022-2364(92)90229-Z","DOIUrl":"https://doi.org/10.1016/0022-2364(92)90229-Z","url":null,"abstract":"","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 672-673"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90229-Z","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136548829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ingress of water into solid nylon 6.6 水进入固体尼龙6.6
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90206-M
P Mansfield, R Bowtell, S Blackband
{"title":"Ingress of water into solid nylon 6.6","authors":"P Mansfield,&nbsp;R Bowtell,&nbsp;S Blackband","doi":"10.1016/0022-2364(92)90206-M","DOIUrl":"https://doi.org/10.1016/0022-2364(92)90206-M","url":null,"abstract":"<div><p>The ingress of water into Nylon 6.6 has been studied over a range of temperatures by nuclear magnetic resonance imaging techniques. The results have been used to extract the translational diffusion coefficient as a function of water concentration for various temperatures. These results in turn allow the activation energies to be evaluated. Other experiments have been made to measure the spin relaxation times <em>T</em><sub>1</sub> and <em>T</em><sub>2</sub>. The results are interpreted using a two-phase exchange model from which good agreement for both the diffusion and relaxation-time data is obtained. High-pressure diffusion results also presented support the view that water is taken up preferentially at the amorphous amide sites in the Nylon and that pressure increases serve to force water onto sitccupied sites and/or onto occupied sites, giving up to three waters per amide site.</p></div>","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 507-524"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90206-M","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72241697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 33
Determination of scalar coupling constants by inverse Fourier transformation of in-phase multiplets 用同相多态傅里叶反变换确定标量耦合常数
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90209-P
T Szyperski, P Güntert, G Otting, K Wüthrich
{"title":"Determination of scalar coupling constants by inverse Fourier transformation of in-phase multiplets","authors":"T Szyperski,&nbsp;P Güntert,&nbsp;G Otting,&nbsp;K Wüthrich","doi":"10.1016/0022-2364(92)90209-P","DOIUrl":"10.1016/0022-2364(92)90209-P","url":null,"abstract":"<div><p>A generally applicable new method for the determination of scalar coupling constants for spins with a single coupling partner, in particular <sup>3</sup><em>J</em><sub>HN<em>α</em></sub>. in polypeptides, is described. It has the special advantage for use in protein structure determinations that no extra NMR experiments need to be recorded, and that NOE distance constraints and dihedral angle constraints from <sup>3</sup><em>J</em><sub>HN<em>α</em></sub> can be derived from the same data sets. The scalar coupling constants are extracted from the in-phase multiplets of homonuclear [<sup>1</sup>H, <sup>1</sup>H] NOESY spectra or heteronuclear [<sup>15</sup>N, <sup>1</sup>H ] COSY spectra through inverse Fourier transformation of the data points representing a cross peak along <em>ω</em><sub>2</sub>, and a subsequent nonlinear least-squares fit in the time domain. Practical applications are described for recombinant hirudin and the basic pancreatic trypsin inhibitor.</p></div>","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 552-560"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90209-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72387336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 153
Sensitivity of optically excited and detected magnetic resonance 光激发和检测磁共振的灵敏度
Journal of Magnetic Resonance (1969) Pub Date : 1992-10-01 DOI: 10.1016/0022-2364(92)90205-L
Dieter Suter
{"title":"Sensitivity of optically excited and detected magnetic resonance","authors":"Dieter Suter","doi":"10.1016/0022-2364(92)90205-L","DOIUrl":"https://doi.org/10.1016/0022-2364(92)90205-L","url":null,"abstract":"<div><p>Compared to other forms of spectroscopy, the sensitivity of magnetic resonance experiments is relatively low, so that large numbers of spins are necessary for an experiment. This contrasts with related fields, most notably optical spectroscopy, where it has become possible, in recent years, to obtain spectroscopic information from individual atomic and molecular systems. This article investigates possible means for transferring some of this sensitivity advantage to the domain of magnetic resonance and gives numerical estimates of the expected signal-to-noise ratios, as well as experimental examples.</p></div>","PeriodicalId":100800,"journal":{"name":"Journal of Magnetic Resonance (1969)","volume":"99 3","pages":"Pages 495-506"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0022-2364(92)90205-L","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72241698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信