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Relevant bibliographies by topics / Relative Peak Intensities of Fragment Ions

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Academic literature on the topic 'Relative Peak Intensities of Fragment Ions'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Relative Peak Intensities of Fragment Ions"

1

Frahski, Rafał, Krystian Eitner, Grzegorz Schroeder, and Volodymir Rybachenko. "The Influence of the C-4′ Substituent on the Formation of Benzoyl Ions during Electron Ionization-Induced Decomposition of Some 2-Phenyl-1,3,4-Oxadiazoles." European Journal of Mass Spectrometry 8, no. 4 (2002): 295–98. http://dx.doi.org/10.1255/ejms.504.

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The effect of the C-4′ substituent for the formation of benzoyl ions during electron ionization-induced decomposition of some 2-phenyl-1,3,4-oxadiazoles is studied. The formation of these ions occurs via an azirane ion. The sums of the abundances of benzoyl ions and abundances of fragment ions derived from them, expressed as a percentage of total-ion current, were compared with the calculated charge density on both C-4′ atoms and atoms connected with C-4′ atoms. Linear correlations were found for both molecular and intermediate azirane ions. In the case of substituents which are less likely to

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2

Nagao, Hirofumi, Michisato Toyoda, Shigeo Hayakawa, et al. "Unimolecular and Collision-Induced Dissociation of Singly-Charged Mono-Bromide Silver Clusters AgxBr+ (x = 2, 4, 6, 8, 10)." European Journal of Mass Spectrometry 15, no. 4 (2009): 459–69. http://dx.doi.org/10.1255/ejms.1008.

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Relative intensities of singly-charged mono-bromide silver clusters Ag xBr+ formed from sputtering of a pressed pellet of silver bromide were measured by mass spectrometry. The obtained results suggest that the Ag xBr+ clusters have a structural formula of the form Ag x–1+(AgBr). The relative stability of Ag x–1+(AgBr) was determined by the intrinsic stability of the remaining metallic portion of the cluster (Ag x–1+) as predicted by the spherical jellium model (SJM). Unimolecular and high-energy collision-induced dissociation (CID) spectra of Ag xBr+ ( x = 2, 4, 6, 8, 10) clusters were also m

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3

Medvedeva, Svetlana M., Alexey V. Movchan, Ksenia A. Bondarenko, Ksenia Dz Shikhalieva, and Khidmet S. Shikhaliev. "Preparation of individual derivatives in 1,3-oxazino[5,4,3-ij]quinolines and 1,4-oxazino[2,3,4-ij]quinolines series by column chromatography and their mass spectrometric study." Сорбционные и хроматографические процессы 23, no. 4 (2023): 705–15. http://dx.doi.org/10.17308/sorpchrom.2023.23/11577.

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Hundreds of highly effective compounds that have a complex of practically useful properties are known among tricyclic hydroquinolines. Therefore, the production of new compounds of high purity in this series and identification of the features of their behaviour under the influence of electron impact for the determination of their structures is important. Previously, we synthesized 1,3-oxazino[5,4,3-ij]quinoline-1,3-diones and 1,4-oxazino[2,3,4-ij]quinoline-2,3-diones, but the nature of the mass spectral decay for the determination of their structures was not discussed. In this study, using thi

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4

Wahl, Margaret Kweya, Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, and Gopal Nayak. "Evaluation of the Impact of the Trivedi Effect® -Energy of Consciousness on the Structure and Isotopic Abundance Ratio of Magnesium Gluconate Using LC-MS and NMR Spectroscopy." American Journal of Biomedical and Life Sciences 5, no. 1 (2017): 6–15. https://doi.org/10.5281/zenodo.839075.

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Magnesium gluconate is a classical pharmaceutical/nutraceutical compound used as a magnesium ion source for the prevention and treatment of hypomagnesemia. The present study was aimed to investigate the effect of The Trivedi Effect® - Energy of Consciousness Healing Treatment (Biofield Energy Healing Treatment) on magnesium gluconate for the change in the structural properties and isotopic abundance ratio (PM+1/PM and PM+2/PM) using LC-MS and NMR spectroscopy. Magnesium gluconate was divided into two parts – one part was control, and another part was treated with The Trivedi Effect® - Biofield

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5

Stutheit, Mark E., Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, and Gopal Nayak. "Evaluation of the Impact of the Trivedi Effect® -Energy of Consciousness on the Structure and Isotopic Abundance Ratio of Magnesium Gluconate Using LC-MS and NMR Spectroscopy." American Journal of Biomedical and Life Sciences 5, no. 1 (2017): 6–15. https://doi.org/10.5281/zenodo.840029.

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Magnesium gluconate is a classical pharmaceutical/nutraceutical compound used as a magnesium ion source for the prevention and treatment of hypomagnesemia. The present study was aimed to investigate the effect of The Trivedi Effect® - Energy of Consciousness Healing Treatment (Biofield Energy Healing Treatment) on magnesium gluconate for the change in the structural properties and isotopic abundance ratio (PM+1/PM and PM+2/PM) using LC-MS and NMR spectroscopy. Magnesium gluconate was divided into two parts – one part was control, and another part was treated with The Trivedi Effect® - Biofield

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6

Dewey, R. S., J. M. Liesch, H. R. Williams та ін. "Purification and characterization by fast-atom-bombardment mass spectrometry of the polymorphonuclear-leucocyte-elastase-generated Aα (1–21) fragment of fibrinogen from human blood after incubation with calcium ionophore A23187". Biochemical Journal 281, № 2 (1992): 519–24. http://dx.doi.org/10.1042/bj2810519.

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The stimulation of human blood with a Ca2+ ionophore, A23187, leads to activation of polymorphonuclear leucocytes (PMN) with release of small amounts of catalyticaly active elastase, as demonstrated by the formation of a characteristic product, the N-terminal A alpha (1-21) peptide of the Aa subunit of fibrinogen. The identity of the peptide was initially established by radioimmunoassay (r.i.a.) with an antibody raised to A alpha (1-21). We now provide independent confirmation of the formation of A alpha (1-21) by fast-atom-bombardment-m.s. analysis of the fractions separated chromatographical

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7

Barnard, Michelle, Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, and Gopal Nayak. "Evaluation of the Impact of the Trivedi Effect® -Energy of Consciousness on the Structure and Isotopic Abundance Ratio of Magnesium Gluconate Using LC-MS and NMR Spectroscopy." American Journal of Biomedical and Life Sciences 5, no. 1 (2017): 6–15. https://doi.org/10.5281/zenodo.841052.

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Abstract:

Magnesium gluconate is a classical pharmaceutical/nutraceutical compound used as a magnesium ion source for the prevention and treatment of hypomagnesemia. The present study was aimed to investigate the effect of The Trivedi Effect® - Energy of Consciousness Healing Treatment (Biofield Energy Healing Treatment) on magnesium gluconate for the change in the structural properties and isotopic abundance ratio (PM+1/PM and PM+2/PM) using LC-MS and NMR spectroscopy. Magnesium gluconate was divided into two parts – one part was control, and another part was treated with The Trivedi Effect® - Biofield

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8

Sinbandhit, Paromvong, Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, and Gopal Nayak. "Evaluation of the Impact of the Trivedi Effect® -Energy of Consciousness on the Structure and Isotopic Abundance Ratio of Magnesium Gluconate Using LC-MS and NMR Spectroscopy." American Journal of Biomedical and Life Sciences 5, no. 1 (2017): 6–15. https://doi.org/10.5281/zenodo.841594.

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Abstract:

Magnesium gluconate is a classical pharmaceutical/nutraceutical compound used as a magnesium ion source for the prevention and treatment of hypomagnesemia. The present study was aimed to investigate the effect of The Trivedi Effect® - Energy of Consciousness Healing Treatment (Biofield Energy Healing Treatment) on magnesium gluconate for the change in the structural properties and isotopic abundance ratio (PM+1/PM and PM+2/PM) using LC-MS and NMR spectroscopy. Magnesium gluconate was divided into two parts – one part was control, and another part was treated with The Trivedi Effect® - Biofield

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9

Foty, Joseph Michael, Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, and Gopal Nayak. "Evaluation of the Impact of the Trivedi Effect® -Energy of Consciousness on the Structure and Isotopic Abundance Ratio of Magnesium Gluconate Using LC-MS and NMR Spectroscopy." American Journal of Biomedical and Life Sciences 5, no. 1 (2017): 6–15. https://doi.org/10.5281/zenodo.883580.

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Abstract:

Magnesium gluconate is a classical pharmaceutical/nutraceutical compound used as a magnesium ion source for the prevention and treatment of hypomagnesemia. The present study was aimed to investigate the effect of The Trivedi Effect® - Energy of Consciousness Healing Treatment (Biofield Energy Healing Treatment) on magnesium gluconate for the change in the structural properties and isotopic abundance ratio (PM+1/PM and PM+2/PM) using LC-MS and NMR spectroscopy. Magnesium gluconate was divided into two parts – one part was control, and another part was treated with The Trivedi Effect® - Biofield

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10

Griffin, John Lawrence, Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, and Gopal Nayak. "Evaluation of the Impact of the Trivedi Effect® -Energy of Consciousness on the Structure and Isotopic Abundance Ratio of Magnesium Gluconate Using LC-MS and NMR Spectroscopy." American Journal of Biomedical and Life Sciences 5, no. 1 (2017): 6–15. https://doi.org/10.5281/zenodo.884142.

Full text

Abstract:

Magnesium gluconate is a classical pharmaceutical/nutraceutical compound used as a magnesium ion source for the prevention and treatment of hypomagnesemia. The present study was aimed to investigate the effect of The Trivedi Effect® - Energy of Consciousness Healing Treatment (Biofield Energy Healing Treatment) on magnesium gluconate for the change in the structural properties and isotopic abundance ratio (PM+1/PM and PM+2/PM) using LC-MS and NMR spectroscopy. Magnesium gluconate was divided into two parts – one part was control, and another part was treated with The Trivedi Effect® - Biofield

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