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Journal of Magnetic Resonance, Series B最新文献

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Stereospecific Assignments of Val and Leu Methyl Groups in a Selectively13C-labeled 18 kDa Polypeptide Using 3D CT-(H)CCH–COSY and 2D1JC–CEdited Heteronuclear Correlation Experiments 利用3D CT-(H) CCH-COSY和2d1jc - ceded异核相关实验研究选择性13c标记的18kda多肽中Val和Leu甲基的立体定位
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0157
Weidong Hu, Erik R.P. Zuiderweg
{"title":"Stereospecific Assignments of Val and Leu Methyl Groups in a Selectively13C-labeled 18 kDa Polypeptide Using 3D CT-(H)CCH–COSY and 2D1JC–CEdited Heteronuclear Correlation Experiments","authors":"Weidong Hu, Erik R.P. Zuiderweg","doi":"10.1006/jmrb.1996.0157","DOIUrl":"10.1006/jmrb.1996.0157","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 70-75"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0157","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19853143","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: 13
B1-Insensitive, Single-Shot Localization and Water Suppression b1不敏感，单枪定位和水抑制
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0152
R.A. de Graaf , Y. Luo , M. Garwood , K. Nicolay
{"title":"B1-Insensitive, Single-Shot Localization and Water Suppression","authors":"R.A. de Graaf ,&nbsp;Y. Luo ,&nbsp;M. Garwood ,&nbsp;K. Nicolay","doi":"10.1006/jmrb.1996.0152","DOIUrl":"10.1006/jmrb.1996.0152","url":null,"abstract":"<div><p>A technique for single-shot, localized, water-suppressed<em>in vivo</em><sup>1</sup>H NMR with high immunity to<em>B</em><sub>1</sub>inhomogeneities is described. The single-shot localization is based on complete outer-volume suppression which is achieved with optimized, adiabatic BIR-4 pulses in combination with<em>B</em><sub>0</sub>gradient modulation.<em>B</em><sub>1</sub>-insensitive water suppression is achieved with BISTRO, a train of selective adiabatic full-passage pulses interleaved with<em>B</em><sub>0</sub>gradient crushers. Computer simulations based on the Bloch equations, experimental images of the localized volume, and<em>in vivo</em><sup>1</sup>H spectroscopy experiments demonstrate the excellent spatial localization and water suppression.</p></div>","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 35-45"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0152","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19853140","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: 68
Signal-to-Noise and Magnetic Susceptibility Trade-offs in Solenoidal Microcoils for NMR 电磁微线圈核磁共振的信噪比和磁化率权衡
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0159
A.G. Webb, S.C. Grant
{"title":"Signal-to-Noise and Magnetic Susceptibility Trade-offs in Solenoidal Microcoils for NMR","authors":"A.G. Webb,&nbsp;S.C. Grant","doi":"10.1006/jmrb.1996.0159","DOIUrl":"10.1006/jmrb.1996.0159","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 83-87"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0159","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19853144","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: 71
Comparison of a Proton-Detected–Carbon-Displayed HSQC-INADEQUATE with Carbon-Detected INADEQUATE Data on a Natural Product 质子检测碳显示hsqc不充分与天然产品碳检测不充分数据的比较
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0158
T.K. Pratum
{"title":"Comparison of a Proton-Detected–Carbon-Displayed HSQC-INADEQUATE with Carbon-Detected INADEQUATE Data on a Natural Product","authors":"T.K. Pratum","doi":"10.1006/jmrb.1996.0158","DOIUrl":"10.1006/jmrb.1996.0158","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 76-82"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0158","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76240203","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: 3
Assay for Bacteria in Porous Media by Diffusion-Weighted NMR 扩散加权核磁共振法测定多孔介质中的细菌
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0149
K. Potter , R.L. Kleinberg , F.J. Brockman , E.W. Mcfarland
{"title":"Assay for Bacteria in Porous Media by Diffusion-Weighted NMR","authors":"K. Potter ,&nbsp;R.L. Kleinberg ,&nbsp;F.J. Brockman ,&nbsp;E.W. Mcfarland","doi":"10.1006/jmrb.1996.0149","DOIUrl":"10.1006/jmrb.1996.0149","url":null,"abstract":"In this work, an NMR technique capable of detecting bacterial cells and measuring the cell density in suspension and in porous media has been developed. It is based on the pulsed-field-gradient technique and relies on the fact that extracellular water diffuses freely while intracellular water is completely restricted by the relatively impermeable cell wall of the bacterium. At high wave vectors, the signal from extracellular water is completely suppressed while the signal from intracellular water is comparatively unaffected. This technique has been applied to the mapping of bacterial distributions in porous media. This method is presented as a non-destructive, real-time technique for biomass characterization within laboratory column and flow cell experiments, and possibly for monitoring in situ bioremediation.","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 9-15"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0149","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19853571","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: 36
Increased Sensitivity in HNCA and HN(CO)CA Experiments by Selective CβDecoupling 选择性c - β解耦提高HNCA和HN(CO)CA实验的灵敏度
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0161
Hiroshi Matsuo , Ēriks Kupce , Hanjun Li , Gerhard Wagner
{"title":"Increased Sensitivity in HNCA and HN(CO)CA Experiments by Selective CβDecoupling","authors":"Hiroshi Matsuo ,&nbsp;Ēriks Kupce ,&nbsp;Hanjun Li ,&nbsp;Gerhard Wagner","doi":"10.1006/jmrb.1996.0161","DOIUrl":"10.1006/jmrb.1996.0161","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 91-96"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19853146","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: 46
Determination of Backbone Torsion Angle ϵ of DNA Duplexes in Solution from3JC4′Pand3JH3′P, Using Heteronuclear Single-Quantum-Coherence Spectroscopy 用异核单量子相干光谱测定3jc4 ' pand3jh3 ' p溶液中DNA双链的主链扭转角ε
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0155
Sik Lok Lam, Steve C.F. Au-Yeung
{"title":"Determination of Backbone Torsion Angle ϵ of DNA Duplexes in Solution from3JC4′Pand3JH3′P, Using Heteronuclear Single-Quantum-Coherence Spectroscopy","authors":"Sik Lok Lam,&nbsp;Steve C.F. Au-Yeung","doi":"10.1006/jmrb.1996.0155","DOIUrl":"10.1006/jmrb.1996.0155","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 59-64"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19853142","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: 2
Magnesium-Based Temperature Dependence of the ATP Chemical-Shift Separation δαβand Its Relation to Intracellular Free Magnesium ATP化学移位分离δαβ的温度依赖性及其与胞内游离镁的关系
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0150
Stefan Widmaier , Thomas Hoess , Johannes Breuer , Wulf-Ingo Jung , Günther J. Dietze , Otto Lutz
{"title":"Magnesium-Based Temperature Dependence of the ATP Chemical-Shift Separation δαβand Its Relation to Intracellular Free Magnesium","authors":"Stefan Widmaier ,&nbsp;Thomas Hoess ,&nbsp;Johannes Breuer ,&nbsp;Wulf-Ingo Jung ,&nbsp;Günther J. Dietze ,&nbsp;Otto Lutz","doi":"10.1006/jmrb.1996.0150","DOIUrl":"10.1006/jmrb.1996.0150","url":null,"abstract":"<div><p>Proton-decoupled<sup>31</sup>P NMR spectroscopy was performed<em>in vitro</em>and<em>in vivo</em>in humans to investigate the temperature dependence of the chemical-shift separation δ<sub>αβ</sub>between the α- and β-phosphorus resonances and the<sup>31</sup>P–<sup>31</sup>P coupling constants of ATP using a 1.5 T whole-body imager.<em>In vitro</em>in the presence of magnesium, a linear temperature dependence of δ<sub>αβ</sub>was found that varied systematically with Mg-to-ATP ratio (<em>R</em>). This needs to be considered in studies where δ<sub>αβ</sub>is used to determine temperature. A second important point is the temperature dependence of −0.0128 ± 0.0002 ppm/°C (mean ± SD,<em>n</em>= 6) of the chemical-shift limit δ<sup>MgATP</sup><sub>αβ</sub>(<em>T</em>) of mostly mono-magnesium-complexed ATP found at<em>R</em>= 2.2 ± 0.2. This parameter is used in combination with the temperature dependences of the uncomplexed limit δ<sup>ATP</sup><sub>αβ</sub>(<em>T</em>) and the dissociation constant<em>K</em><sup>MgATP</sup><sub>D</sub>(<em>T</em>) for the determination of [Mg<sup>2+</sup><sub>free</sub>] at different temperatures. Preliminary studies<em>in vivo</em>show that δ<sub>αβ</sub>also decreases in human skeletal muscle with increasing temperature, similarly to the<em>in vitro</em>results. Therefore, interpretations of differences in δ<sub>αβ</sub>found<em>in vivo</em>must consider even small temperature differences to avoid significant errors in the determination of [Mg<sup>2+</sup><sub>free</sub>].</p></div>","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 16-24"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0150","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76613525","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: 8
Multislice Imaging with Adiabatic Pulses Using Transverse Hadamard Encoding 采用横向Hadamard编码的绝热脉冲多层成像
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0162
Robin A. de Graaf, Klaas Nicolay
{"title":"Multislice Imaging with Adiabatic Pulses Using Transverse Hadamard Encoding","authors":"Robin A. de Graaf,&nbsp;Klaas Nicolay","doi":"10.1006/jmrb.1996.0162","DOIUrl":"10.1006/jmrb.1996.0162","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 97-101"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0162","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85478421","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: 6
Optimal Field Strength and Pulse-Sequence Parameters forin VivoDynamic-Polarization Imaging 动态偏振成像的最佳场强和脉冲序列参数
Journal of Magnetic Resonance, Series B Pub Date : 1996-10-01 DOI: 10.1006/jmrb.1996.0154
H. Konijnenburg, A.F. Mehlkopf
{"title":"Optimal Field Strength and Pulse-Sequence Parameters forin VivoDynamic-Polarization Imaging","authors":"H. Konijnenburg,&nbsp;A.F. Mehlkopf","doi":"10.1006/jmrb.1996.0154","DOIUrl":"10.1006/jmrb.1996.0154","url":null,"abstract":"","PeriodicalId":16130,"journal":{"name":"Journal of Magnetic Resonance, Series B","volume":"113 1","pages":"Pages 53-58"},"PeriodicalIF":0.0,"publicationDate":"1996-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1006/jmrb.1996.0154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80537764","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: 8
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