Artykuły w czasopismach: „COSY experiments”

1

Grzonka, D., i K. Kilian. "Experiments at COSY". Nuclear Physics A 670, nr 1-4 (maj 2000): 241–48. http://dx.doi.org/10.1016/s0375-9474(00)00106-8.

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RITMAN, JAMES. "EXPERIMENTS WITH THE WASA DETECTOR AT COSY". International Journal of Modern Physics A 20, nr 02n03 (30.01.2005): 525–31. http://dx.doi.org/10.1142/s0217751x05021695.

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Recently the unique possibility to transfer the WASA detector from TSL in Uppsala to COSY in Jülich has appeared. This transfer will be advantageous to both the current WASA collaboration at CELSIUS and the current COSY user group, since it will allow for a continued utilization of the WASA detector and it will enable a much more complete exploitation of the physics potential of COSY. This symbiosis will allow WASA to capitalize on the higher beam energy and polarized beams available and COSY to measure many of the possible final states with more than one photon. This report presents a sketch of the physics program forseen for WASA at COSY and the ongoing activities to prepare the transfer.

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3

Mutzenhardt, P., J. Brondeau i D. Canet. "Selective COSY Experiments withB1Gradients". Journal of Magnetic Resonance, Series A 117, nr 2 (grudzień 1995): 278–84. http://dx.doi.org/10.1006/jmra.1995.0736.

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Büscher, M. "Meson-production experiments at COSY-Jülich". Chinese Physics C 34, nr 9 (wrzesień 2010): 1263–68. http://dx.doi.org/10.1088/1674-1137/34/9/021.

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Ahmad, Viqar Uddin, Aziz-ur-Rehman Amber, Kaniz Fizza i Arshad Kamal. "Notizen: Cadabicilone, a Sesquiterpene Lactone from Cadaba farinosa". Zeitschrift für Naturforschung B 45, nr 7 (1.07.1990): 1100–1102. http://dx.doi.org/10.1515/znb-1990-0734.

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Erven, W., J. Holzer, H. Kopp, H. W. Loevenich, W. Meiling, K. Zwoll, M. Karnadi, R. Nellen i K. H. Watzlawik. "COSY data acquisition system for physical experiments". IEEE Transactions on Nuclear Science 39, nr 2 (kwiecień 1992): 148–53. http://dx.doi.org/10.1109/23.277508.

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Watzlawik, K. H., N. Brummund, M. Karnadi, R. Nellen, H. Schroeder, J. Stock, K. Zwoll i M. Drochner. "Control system for scalable experiments at COSY". IEEE Transactions on Nuclear Science 43, nr 1 (luty 1996): 44. http://dx.doi.org/10.1109/23.486002.

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8

Kacharava, A., D. Chiladze, B. Chiladze, I. Keshelashvili, N. Lomidze, G. Macharashvili, D. Mchedlishvili i in. "Neutron–Proton Scattering Experiments at ANKE–COSY". EPJ Web of Conferences 3 (2010): 05004. http://dx.doi.org/10.1051/epjconf/20100305004.

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Cory, D. G., F. H. Laukien i W. E. Maas. "Double-Quantum-Filtered-COSY B1-Gradient Experiments". Journal of Magnetic Resonance, Series A 105, nr 2 (listopad 1993): 223–29. http://dx.doi.org/10.1006/jmra.1993.1275.

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Şaka, İrfan, Sedat Gümüş i Azmi Gençten. "A Complete Product Operator Theory for IS (I=1, S = 1) Spin System and Application to 3D HMQC-COSY NMR Experiment". Zeitschrift für Naturforschung A 64, nr 5-6 (1.06.2009): 377–86. http://dx.doi.org/10.1515/zna-2009-5-612.

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There exist a variety of multi-pulse NMR experiments for spectral assignment of complex molecules in solution. The conventional heteronuclear multiple-quantum coherence (HMQC) NMR experiment provides correlation between weakly coupled hetero-nuclei. The COSY is one of the most popular two-dimensional NMR experiment which is used to correlate J-coupled homo-nuclei of spectral assignment. The combination of the conventional HMQC and COSY NMR experiments yields a new experiment called 3D HMQC-COSY NMR experiment. The product operator theory is widely used for the analytical descriptions of multi-pulse NMR experiments for weakly coupled spin systems in liquids. In this study, complete product operator theory for weakly coupled IS (I = 1, S = 1) spin system is presented by obtaining the evolutions of the product operators under the spin-spin coupling Hamiltonian. As an application and a verification, analytical descriptions of 3D HMQC-COSY NMR experiment are obtained for weakly coupled ISnI’_S’m (I = I’ = 1/2; S = S’ = 1; n = 1,2, 3; m = 1, 2) multi-spin systems. Then the estimated spectra of this experiment for various multi-spin systems are explained in detail.

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Zwoll, K., M. Drochner, W. Erven, J. Holzer, H. Kopp, H. W. Loevenich, P. Wustner i in. "Flexible data acquisition system for experiments at COSY". IEEE Transactions on Nuclear Science 41, nr 1 (1994): 37–44. http://dx.doi.org/10.1109/23.281453.

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Hassan, A., S. Igel, V. Jaeckle, K. Kilian, R. Klein, H. Machner, Ch Nake i in. "The target area of the external COSY experiments". Nuclear Physics A 626, nr 1-2 (listopad 1997): 435–38. http://dx.doi.org/10.1016/s0375-9474(97)00566-6.

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Ball, G. E., G. J. Bowden, T. H. Heseltine, M. J. Prandolini i W. Bermel. "Radiation damping artifacts in 2D COSY NMR experiments". Chemical Physics Letters 261, nr 4-5 (październik 1996): 421–24. http://dx.doi.org/10.1016/0009-2614(96)00987-6.

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Abdel-Samad, S., M. Abdel-Bary, K. Kilian i J. Ritman. "Deuterium heat pipes—cryogenic targets for COSY experiments". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 550, nr 1-2 (wrzesień 2005): 61–69. http://dx.doi.org/10.1016/j.nima.2005.05.042.

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Prasuhn, D., R. Maier, U. Bechstedt, J. Dietrich, U. Hacker, S. Martin, H. Stockhorst i in. "First internal and external experiments at COSY Juelich". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 362, nr 1 (sierpień 1995): 16–19. http://dx.doi.org/10.1016/0168-9002(95)00309-6.

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Mutzenhardt, P., J. Brondeau i D. Canet. "COSY Experiments and Solvent Suppression with B1 Gradients". Journal of Magnetic Resonance, Series A 108, nr 1 (maj 1994): 110–15. http://dx.doi.org/10.1006/jmra.1994.1098.

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Chen, Johnny, Allan M. Torres, Gang Zheng i William S. Price. "Applications of WaterControl to TOCSY and COSY experiments". Journal of Biomolecular NMR 74, nr 6-7 (15.05.2020): 333–40. http://dx.doi.org/10.1007/s10858-020-00319-9.

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18

Liu, Jia-Sen, Liang Li i Han-Gang Yu. "Kadsulignan A and B, two novel lignans from Kadsuracoccinea". Canadian Journal of Chemistry 67, nr 4 (1.04.1989): 682–84. http://dx.doi.org/10.1139/v89-103.

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Two novel lignans, kadsulignan A (1) and B (2), were isolated from the seeds of Kadsuracoccinea. Their structures were elucidated by 2D1H–13C COSY, 2D1H–13C long-range COSY experiments, and chemical transformation to a known compound (5) using AlCl2H. Keywords: isolation and structures, kadsulignan A, kadsulignan B, Kadsuracoccinea.

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19

MOSKAL, P., H. H. ADAM, A. BUDZANOWSKI, R. CZYŻYKIEWICZ, D. GRZONKA, M. JANUSZ, L. JARCZYK i in. "HADRONIC INTERACTION OF THE η MESON WITH TWO NUCLEONS". International Journal of Modern Physics A 20, nr 08n09 (10.04.2005): 1880–83. http://dx.doi.org/10.1142/s0217751x05023542.

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The COSY-11 collaboration has conducted experiments aiming at the determination of the excitation function and phase-space population of the pp→ppη reaction close to the kinematical threshold. The precise data obtained with the stochastically cooled proton beam of the cooler synchrotron COSY and the high resolution zero-degree magnetic spectrometer allowed for the observation of the significant deviations – in the shape of the excitation function and two-particle invariant masses – from the predictions based on the assumption that the reaction phase space is homogenously populated. Comparison of the shape of the excitation function for the pp→ppη and pp→ppη′ reaction allows to distinquish in the model independent way an influence originating from the proton-proton and proton-η interaction. For the comparison the full data set from experiments performed at COSY and other laboratories is used.

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20

Gehring, Kalle, i Irena Ekiel. "H(C)CH-COSY and (H)CCH-COSY Experiments for13C-Labeled Proteins in H2O Solution". Journal of Magnetic Resonance 135, nr 1 (listopad 1998): 185–93. http://dx.doi.org/10.1006/jmre.1998.1543.

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Hassan, A., K. Th Brinkmann, E. Kuhlmann, K. Kilian, W. Oelert i E. Roderburg. "A multifunctional cryo-target for the external COSY experiments". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 425, nr 1-2 (kwiecień 1999): 403–8. http://dx.doi.org/10.1016/s0168-9002(98)01411-9.

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22

McIntyre, Lisa, Xi-Li Wu i Ray Freeman. "Fine structure of cross peaks in truncated COSY experiments". Journal of Magnetic Resonance (1969) 87, nr 1 (marzec 1990): 194–201. http://dx.doi.org/10.1016/0022-2364(90)90100-n.

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23

Shaw, Anthony A., Christophe Salaun, Jean-François Dauphin i Bernard Ancian. "Artifact-Free PFG-Enhanced Double-Quantum-Filtered COSY Experiments". Journal of Magnetic Resonance, Series A 120, nr 1 (maj 1996): 110–15. http://dx.doi.org/10.1006/jmra.1996.0105.

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Falsone, G., F. Cateni, E. Vrech, L. Birkofer, V. Lucchini, H. Wagner, O. Seligmann i L. Coassini Lokar. "Triacylglycerols, Fucosterol, Diacylglyceroglycolipids and Fucoxanthin from Fucus virsoides". Zeitschrift für Naturforschung B 49, nr 9 (1.09.1994): 1297–304. http://dx.doi.org/10.1515/znb-1994-0923.

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From the marine brown macroalga Fucus virsoides J. AG. (Fucales, Phaeophyceae), a mixture of triacylglycerols 1 -3, fucosterol 4, a mixture of galactosyldiacylglycerols 5-8 and fucoxanthin 9 have been isolated. Normal phase column flash chromatography was effective for the isolation of the marine compounds. FAB-MS, CI-MS spectrometry, 1H NMR, 13C NMR, 1H-1H COSY and 1H-13C COSY experiments were useful in providing informations for their structure elucidation

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25

Tušek-Božic, Ljerka, Manda Curic, Dražen Vikic-Topic i Antonín Lyčka. "Multinuclear NMR Studies of Palladium(II) Dihalide Complexes of Dibutyl {α-[4-(Phenyldiazenyl)anilino]benzyl}phosphonate". Collection of Czechoslovak Chemical Communications 62, nr 12 (1997): 1888–904. http://dx.doi.org/10.1135/cccc19971888.

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The 1H, 13C, 15N and 31P NMR studies of two types of palladium(II) dihalide complexes of dibutyl {α-[4-(phenyldiazenyl)anilino]benzyl}phosphonate (L) are reported: those with the monodentate trans-bonded ligands through the azo nitrogen, trans-Pd(L)2X2 (X = Cl, Br), and a cyclopalladated binuclear complex in which chloride ions bridge two metal centers, [Pd(L-H)(μ-Cl)]2. The 15N-enriched organophosphorus compound and its palladium(II) complexes were also prepared to enable unambiguous determination of the nitrogen ligation site by 15N NMR. The NMR analysis was accomplished by one- and two-dimensional homo- and heteronuclear experiments including 1H-1H COSY, long-range 1H-1H COSY, NOESY, 1H-13C COSY, long-range 1H-13C COSY, HMQC and HMBC. With the mononuclear complexes, the formation of isomeric species was observed, which are interpreted as rotational isomers caused by restricted rotation around the metal-ligand bond.

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26

Drew, Jacinta, Jean-Robert Brisson, Peter Morand i Arthur G. Szabo. "1H and 13C nuclear magnetic resonance assignment of fluorescent olefinic sterol derivatives for use as membrane probes". Canadian Journal of Chemistry 65, nr 8 (1.08.1987): 1784–94. http://dx.doi.org/10.1139/v87-300.

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A number of fluorescent steroids with unsaturated sidechains have been analyzed by high resolution 1H and 13C nmr spectroscopy. The geometry of the olefinic systems was assigned on the basis of 1H–1H shift-correlated spectra (COSY) and selected nOe difference experiments. For one of these compounds, a 13C–1H shift-correlated spectrum, a COSY spectrum, a 1H J-resolved spectrum as well as nOe experiments on the angular methyl groups permitted complete ring proton assignment and coupling constant analysis. The high degree of similarity of the ring carbon 13C chemical shifts of these steroids and cholesterol would indicate that the former have the potential for use as fluorescent probes of cholesterol domains in membranes.

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Findlay, John A., Zheng-Quan He i Mahesh Jaseja. "Forbeside E: a novel sulfated sterol glycoside from Asteriasforbesi". Canadian Journal of Chemistry 67, nr 12 (1.12.1989): 2078–80. http://dx.doi.org/10.1139/v89-323.

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The structure of forbeside E, a minor constituent of the saponin fraction of the starfish Asteriasforbesi, has been identified as the disodium salt of (20R)-5α-pregn-9(11)ene-3β-sulfo-oxy-6α-[O-β-D-4-sulfo-oxyquinovopyranosyl]-20-ol, principally by 2D-COSY, DQ COSY, HCORR, and DEPT experiments. Sodium thornasterol-3-O-sulfate has been isolated as a natural product from the same organism. Keywords: sulfated sterol glycoside, Asteriasforbesi metabolites, sodium thomasterol-3-O-sulfate, asterogenol rearrangement.

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28

Motiram-Corral, Kumar, Míriam Pérez-Trujillo, Pau Nolis i Teodor Parella. "Implementing one-shot multiple-FID acquisition into homonuclear and heteronuclear NMR experiments". Chemical Communications 54, nr 96 (2018): 13507–10. http://dx.doi.org/10.1039/c8cc08065h.

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The concept of multiple-FID acquisition (MFA) within the same scan is applied to acquire simultaneously multiple 2D spectra from a single NMR experiment. A discussion on the incorporation of the MFA strategy in homonuclear and heteronuclear pulse sequences is presented. Several novel COSY- and HMBC-type experiments are reported as a time-efficient solution in small-molecule NMR spectroscopy.

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Abdel-Samad, S., M. Abdel-Bary i K. Kilian. "New developments in cryo-targets for the external COSY experiments". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 495, nr 1 (grudzień 2002): 1–7. http://dx.doi.org/10.1016/s0168-9002(02)01561-9.

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ROY, B. J. "ETA-NUCLEUS INTERACTION STUDIES: EXPERIMENTAL EFFORTS". International Journal of Modern Physics E 18, nr 05n06 (czerwiec 2009): 1371–77. http://dx.doi.org/10.1142/s0218301309013580.

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The idea that the η meson could form a bound system with nucleus was put forward long ago by Q.Haider and L.C.Liu and was based on the observation that the low energy η-nucleon interaction was attractive. Since then a number of theoretical calculations have been performed to the predict eta-nucleus bound states. Such bound states-the so called "eta-mesic nuclei" - are predicted to have finite widths and will eventually decay. The experimental confirmation of such a quasi-bound system would be a very useful tool for investigation of interaction between a short lived eta-meson and the nucleus. Since the eta-mesons can not be produced as a secondary beam, the eta-meson particles are available for investigations only as products of certain nuclear reactions where they appear as final state particles. The final state interaction(FSI) effects are the only source of information about the eta-meson interaction with the nucleus. Experiments were performed at the cooler synchrotron accelerator, COSY, Juelich using dedicated detection systems to study the eta-nucleus interaction. The present talk summarizes the status of previous experimental searches. Some preliminary results of the experiments performed at COSY on the eta-nucleus FSI studies are also presented here. The details of the experiments done at COSY, Juelich on eta-mesic nuclei searches along with recent results are reported in an another communication in this proceedings.

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Penchev, Plamen N., Stefka R. Nachkova, Tonka A. Vasileva i Petko I. Bozov. "1H and 13C NMR Analysis of the neo-Clerodane Diterpenoid Scutecyprin". Natural Product Communications 9, nr 8 (sierpień 2014): 1934578X1400900. http://dx.doi.org/10.1177/1934578x1400900803.

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The 1H and 13C NMR spectra of the neo-clerodane diterpenoid scutecyprin were completely assigned by using a combination of 2D NMR experiments, which included 1H-1H COSY, HSQC, HMBC and NOESY sequences.

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Shaker, Kamel H., Katja Dockendorff, Mirko Bernhardt i Karlheinz Seifert. "A New Triterpenoid Saponin from Ononis spinosa and Two New Flavonoid Glycosides from Ononis vaginalis". Zeitschrift für Naturforschung B 59, nr 1 (1.01.2004): 124–28. http://dx.doi.org/10.1515/znb-2004-0118.

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Abstract The new triterpenoid saponin 3-O-[α-L-rhamnopyranosyl-(1→2)-β -D-xylopyranosyl-(1→2)- β -D-glucuronopyranosyl]-3β ,22α-dihydroxyolean-13-en-11-one has been isolated from Ononis spinosa. The new flavonoid glycoside 3-O-[2-O-(E)-p-coumaroyl-β -D-galactopyranosyl]-7-O-β - D-glucopyranosylkaempferol and the new pterocarpan glucoside 3,4-di-O-β -D-glucopyranosyl-4- hydroxymedicarpin have been obtained from Ononis vaginalis. The structures were determined primarily by NMR spectroscopy. The assignment of NMR signals was performed by means of 1H-1H COSY, ROESY, TOCSY, HMQC HMQC-COSY and HMBC experiments.

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Díaz T., Eduardo, Christopher K. Jankowski, Celine Hocquelet, Federico del Rio P. i Héctor Barrios. "The unambiguous assignment of NMR spectra of per-O-methylated 6-mono and 6,6-diamino-β-cyclodextrins". Canadian Journal of Chemistry 86, nr 7 (1.07.2008): 726–36. http://dx.doi.org/10.1139/v08-063.

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The step-by-step analysis of high-resolution proton and 13C NMR spectra of per-O-methylated-6-monoamino and 6,6-diamino-A,D-β-cyclodextrins is described. Selected 2-D experiments (COSY, NOESY, HSQC, DEPT, and HMBC) allowed us to challenge the current interpretation. The full assignment of the proton and carbon-13 NMR spectra of these two compounds was performed enabling us to complete the assignment of NMR spectra acquired at 500 and 800 MHz for these important synthetic intermediates.Key words: COSY, NOESY, HSQC, DEPT, HMBC, NMR, 6-amino-β-cyclodextrins, 6,6-diamino-β-cyclodextrins.

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Bernhardt, Mirko, Kamel H. Shaker, M. Hani A. Elgamal i Karlheinz Seifert. "The New Bishomoflavone Ononin and Its Glucoside from Ononis vaginalis". Zeitschrift für Naturforschung C 55, nr 7-8 (1.08.2000): 516–19. http://dx.doi.org/10.1515/znc-2000-7-806.

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Abstract The new bishomoflavone ononin and its glucoside have been isolated from Ononis vaginalis. The structures were determined primarily by NMR spectroscopy. The assignment of NMR signals was performed by means of 1H - 1H COSY, HMQC and HMBC experiments.

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Mikirtychyants, M., R. Engels, K. Grigoryev, A. Vasilyev, D. Chiladze, A. Kacharava, S. Mikirtychyants i in. "First experiments with the polarized internal gas target at ANKE/COSY". Journal of Physics: Conference Series 295 (1.05.2011): 012148. http://dx.doi.org/10.1088/1742-6596/295/1/012148.

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Weidemann, Christian. "Toward polarized antiprotons: machine development for spin-filtering experiments at COSY". Physica Scripta T166 (1.11.2015): 014038. http://dx.doi.org/10.1088/0031-8949/2015/t166/014038.

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Turner, C. J., i W. C. Hutton. "A Comparison of Data-Acquisition Schemes in Two-Dimensional COSY Experiments". Journal of Magnetic Resonance, Series A 105, nr 1 (październik 1993): 72–77. http://dx.doi.org/10.1006/jmra.1993.1250.

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Findlay, John A., Mahesh Jaseja, D. Jean Burnell i Jean-Robert Brisson. "Major saponins from the starfish Asteriasforbesi. Complete structures by nuclear magnetic resonance methods". Canadian Journal of Chemistry 65, nr 6 (1.06.1987): 1384–91. http://dx.doi.org/10.1139/v87-234.

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The structures of the two major saponins isolated from the starfish Asteriasforbesi have been deduced totally by nuclear magnetic resonance methods applied to the undegraded molecules. The structure of forbeside A, 6α-O-{β-D-galactopyranosyl-(1 → 3)-β-D-fucopyranosyl-(1 → 2)-β-D-galactopyranosyl-(1 → 4)-[β-D-quinovopyranosyl-(1 → 2)]-β-D-xylopyranosyl-(1 → 3)-β-D-quinovopyranosyl}-20-hydroxy-23-oxo-5α-cholest-9(11)-en-3β-yl sodium sulfate, was deduced principally from 1H 2D-COSY, J-resolved, nuclear Overhauser enhancement and selected decoupling experiments. The structure of forbeside B, 6α-O-{β-D-quinovopyranosyl-(1 → 2)-β-D-galactopyranosyl-(1 → 4)-[β-D-quinovopyranosyl-(1 → 2)]-β-D-xylopyranosyl-(1 → 3)-β-D-quinovopyranosyl}-20-hydroxy-23-oxo-5α-cholest-9(11)-en-3β-yl sodium sulfate, was deduced principally from 2D-COSY, HCORR, RECSY, and NOESY experiments.

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39

Drakenberg, Torbjörn, Peter Brodelius, Deane D. McIntyre i Hans J. Vogel. "Structural studies of digitoxin and related cardenolides by two-dimensional NMR". Canadian Journal of Chemistry 68, nr 2 (1.02.1990): 272–77. http://dx.doi.org/10.1139/v90-037.

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The 1H and 13C NMR spectra of the cardenolides digitoxigenin, digoxigenin, digitoxin, and mono- and bis-digitoxigenin digitoxosides have been completely assigned by two-dimensional NMR spectroscopy. The techniques used include phase-sensitive COSY, multiple relay COSY, and carbon–proton correlation (HETCOR and HMQC) spectra. Various aspects of the solution conformation of the steroid moiety of digitoxin and digoxigenin could be determined from coupling constants and NOE difference experiments and they are indicative of an all-chair conformation. The carbohydrate rings in digitoxin and the mono- and bis-digitoxigenin digitoxosides are also in the chair conformation. Keywords: cardenolides, digitoxigenin, digitoxin, 2-dimensional NMR, conformational analysis.

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40

Hamdoun, G., B. Gouilleux, M. Sebban, G. Barozzino-Consiglio, A. Harrison-Marchand, P. Giraudeau, J. Maddaluno i H. Oulyadi. "2D 7Li Ultrafast CT-COSY: a new tool for the rapid measurement of tiny homonuclear lithium scalar couplings". Chemical Communications 53, nr 1 (2017): 220–23. http://dx.doi.org/10.1039/c6cc08744b.

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We report on the first examples of ⁷Li Ultrafast (UF) CT-COSY spectra from lithiated samples and on the usefulness of these experiments for the quantitative estimation of the ²J_7Li–7Li in a much shorter time.

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KUPSC, ANDRZEJ. "RECENT RESULTS FROM THE WASA-at-COSY EXPERIMENT: LIGHT MESON DECAYS". International Journal of Modern Physics A 26, nr 03n04 (10.02.2011): 474–79. http://dx.doi.org/10.1142/s0217751x11051858.

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Studies of light meson decays are the key experiments for the WASA detector at COSY-Jülich. One of the world largest data samples of the η meson decays have been recently collected in the pd →3 He η and in the pp → ppη reactions. The status of the analysis of various decay channels and the further plans for the light meson decay program are presented.

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42

Mehmood, Rashad, i Abdu Malik. "New Secondary Metabolites from Croton sparsiflorus". Zeitschrift für Naturforschung B 66, nr 8 (1.08.2011): 857–60. http://dx.doi.org/10.1515/znb-2011-0812.

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Sparsifol (1), a new stereoisomer of inositol, and proaporphine alkaloid crotsparsidine (2), have been isolated from the EtOH extract of Croton sparsiflorus. Their structures were determined on the basis of 1H and 13C NMR spectra, DEPT, COSY, NOESY, HMBC, HMQC, EI-MS, and FAB-MS experiments

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43

Qu, Yan, Zhi-Hui Ding i Ji-Kai Liu. "The First Occurrence in Nature of Two Compounds from Hops". Zeitschrift für Naturforschung C 58, nr 9-10 (1.10.2003): 640–42. http://dx.doi.org/10.1515/znc-2003-9-1007.

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AbstractTwo compounds, (p-methoxyphenyl) diphenylmethanol (1) and tribenzylamine (2), were isolated from Humulus lupulus. Their structures were established on the basis of spectral evidence (MS, IR, NMR, HMBC, HMQC, 1H-1H COSY experiments). Compounds 1 and 2 were found as natural products at the first time.

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44

Ciullo, Giuseppe, Marco Statera, Paolo Lenisa, Alexander Nass i Giuseppe Tagliente. "The H and D Polarized Target for Spin–Filtering Measurements at COSY". International Journal of Modern Physics: Conference Series 40 (styczeń 2016): 1660149. http://dx.doi.org/10.1142/s2010194516601496.

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In the main frame of the PAX (Polarized Antiproton eXperiments) collaboration, which engaged the challenging purpose of polarizing antiproton beams, the possibility to have H or D polarized targets requires a daily switchable source and its diagnostics: mainly change is a dual cavity tunable for H and D. The commissioning of PAX has been fullfilled, for the transverse case, on the COSY (COoler SYnchrotron) proton ring, achieving milestones on spin–dependent cross–section measurements. Now the longitudinal case could provide sensitive polarization results. An H or D source allows the exploration of the spin–filtering process with a deuterium polarized target, and opens new chances for testing Time Reversal Invariance at COSY (TRIC).

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45

Ahmad, Viqar Uddin, Saleha Suleman Khan, Amir Ahmed, Afsar Khan, Umar Farooq, Saima Arshad, Bilge Sener i Nurgun Erdemogluc. "Sulfated Triterpene Glycosides from Zygophyllum Fabago". Natural Product Communications 2, nr 11 (listopad 2007): 1934578X0700201. http://dx.doi.org/10.1177/1934578x0700201106.

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From the aerial parts of Zygophyllum fabago from Turkey, two new sodium salts of sulfated glycoside derivatives of ursolic acid, named as zygofaboside A (1) and zygofaboside B (2) have been isolated. Their structures were elucidated through spectral studies, including 2D-NMR spectroscopic experiments (HMQC, HMBC, COSY and NOESY).

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46

Abbas, Wahaj Raed. "New Chalcones Derivatives, Determine Their Chemical Structure Using 1D and 2D-NMR Spectroscopy". BASRA JOURNAL OF SCIENCE 39, nr 3 (1.12.2021): 446–62. http://dx.doi.org/10.29072/basjs.2021308.

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The complete 1H and 13C NMR assignment of new chalcones compounds has been obtained using one-and two-dimensional NMR techniques including COSY, HMQC, and HMBC experiments. The data deduced from this study show that the alkyl chain and the phenyl ring are in different planes compared to the chalcones ring.

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47

LENISA, PAOLO. "PERSPECTIVES FOR POLARIZED ANTIPROTONS". International Journal of Modern Physics E 18, nr 02 (luty 2009): 484–91. http://dx.doi.org/10.1142/s0218301309012537.

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In the framework of the FAIR project the PAX Collaboration has suggested new experiments using polarized protons and antiprotons. In order to provide polarized antiprotons, the proposed mechanisms for the production of a polarized stored have to be investigated. To this aim a series of experiments have already been started with protons at the COSY ring. Additional experiment have to be foreseen at AD ring with antiprotons to define to working parameters of a dedicated Antiproton Polarizer Ring.

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48

Schult, O. W. B., R. Maier, U. Pfister i D. Prasuhn. "Physical parameters at the internal target positions for experiments in COSY-Jülich". Physica Scripta 48, nr 1 (1.07.1993): 47–49. http://dx.doi.org/10.1088/0031-8949/48/1/005.

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49

Schmidt, M., D. W. Oertel, H. K. Oertel, H. L. Huber, E. Weihreter, G. v. Egan-Krieger, M. v. Hartrott, H. Lehr, M. Martin i L. Schulz. "Status of the compact synchrotron radiation source cosy and first exposure experiments". Microelectronic Engineering 13, nr 1-4 (marzec 1991): 291–94. http://dx.doi.org/10.1016/0167-9317(91)90096-v.

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Otter, Albin, i David R. Bundle. "Long-Range4Jand5J, IncludingInterglycosidic Correlations in Gradient-Enhanced Homonuclear COSY Experiments of Oligosaccharides". Journal of Magnetic Resonance, Series B 109, nr 2 (listopad 1995): 194–201. http://dx.doi.org/10.1006/jmrb.1995.0009.

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