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Journal articles on the topic 'Lc-Ms/ms | 13c rmn'

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Published: 7 July 2024

Last updated: 31 July 2025

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1

Zhang, Kai. "Comparison of Flow Injection-MS/MS and LC-MS/MS for the Determination of Ochratoxin A." Toxins 13, no. 8 (2021): 547. http://dx.doi.org/10.3390/toxins13080547.

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Two methods for measuring ochratoxin A in corn, oat, and grape juice were developed and compared. Flow injection (FI) and on-line liquid chromatography (LC) performances were evaluated separately, with both methods using a triple quadrupole tandem mass spectrometer (MS/MS) for quantitation. Samples were fortified with 13C uniformly labeled ochratoxin A as the internal standard (13C-IS) and prepared by dilution and filtration, followed by FI- and LC-MS/MS analysis. For the LC-MS/MS method, which had a 10 min run time/sample, recoveries of ochratoxin A fortified at 1, 5, 20, and 100 ppb in corn,

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Trilleras, Jorge, Karen Feria, Daniel Alcazar, Jairo Quiroga, Manuel Nogueras, and Justo Cobo. "Síntesis multicomponente y caracterización de derivados pirimido [4,5-b] quinolínicos con evaluación de la actividad antileishmania." Revista Colombiana de Ciencias Químico-Farmacéuticas 46, no. 1 (2017): 5–17. http://dx.doi.org/10.15446/rcciquifa.v46n1.67286.

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A partir de 6-amino-3-metil-2-(metiltio)pirimidin-4(3H)-ona, aldehídos aromáticos y benzoquinona, por medio de una reacción de ciclodeshidratación de Michael asistida por radiación de microondas, se realizó la síntesis y caracterización de la serie de derivados tricomponentes pirimido[4,5-b]quinolínicos, y se evaluó la posible actividad antileishmania. Los nuevos compuestos se caracterizaron por análisis espectroscópico de IR, RMN 1H, RMN 13C y MS.

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3

Ford, Roddey E., Mark J. Magera, Karen M. Kloke, Paul A. Chezick, Abdul Fauq, and Joseph P. McConnell. "Quantitative Measurement of Porphobilinogen in Urine by Stable-Isotope Dilution Liquid Chromatography-Tandem Mass Spectrometry." Clinical Chemistry 47, no. 9 (2001): 1627–32. http://dx.doi.org/10.1093/clinchem/47.9.1627.

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Abstract Background: Measurement of porphobilinogen (PBG) is useful in the diagnosis of the acute neurologic porphyrias. Currently used colorimetric assays lack analytical and clinical sensitivity and specificity. Methods: We developed a liquid chromatography-electrospray tandem mass spectrometry (LC-MS/MS) method for the measurement of PBG in 1 mL of urine, using 5-(aminoethyl)-4-(carboxymethyl) 1H-2,4-[13C]pyrolle-3-propanoic acid ([2,4-13C]PBG; 2.75 μg) as internal standard. After solid-phase extraction, LC-MS/MS analysis was performed in the selected-reaction monitoring (SRM) mode. PBG and

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Cocuron, Jean-Christophe, Zacchary Ross, and Ana P. Alonso. "Liquid Chromatography Tandem Mass Spectrometry Quantification of 13C-Labeling in Sugars." Metabolites 10, no. 1 (2020): 30. http://dx.doi.org/10.3390/metabo10010030.

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Subcellular compartmentation has been challenging in plant 13C-metabolic flux analysis. Indeed, plant cells are highly compartmented: they contain vacuoles and plastids in addition to the regular organelles found in other eukaryotes. The distinction of reactions between compartments is possible when metabolites are synthesized in a particular compartment or by a unique pathway. Sucrose is an example of such a metabolite: it is specifically produced in the cytosol from glucose 6-phosphate (G6P) and fructose 6-phosphate (F6P). Therefore, determining the 13C-labeling in the fructosyl and glucosyl

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5

Zhang, Kai, Chia-Ding Liao, Shristi Prakash, Michael Conway, and Hwei-Fang Cheng. "Interlaboratory Validation of a Stable Isotope Dilution and Liquid Chromatography Tandem Mass Spectrometry Method for the Determination of Aflatoxins in Milk, Milk-Based Infant Formula, and Feed." Journal of AOAC INTERNATIONAL 101, no. 3 (2018): 677–85. http://dx.doi.org/10.5740/jaoacint.17-0341.

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Abstract An interlaboratory study was conducted to evaluate stable isotope dilution and LC tandem MS (MS/MS) for the determination of aflatoxins B1, B2, G1, G2, and M1 (AFB1, AFB2, AFG1, AFG2, and AFM1) in milk, milk-based infant formula (formula), and feed. Samples were first fortified with five 13C uniformly labeled aflatoxins {[13C]–internal standard (IS)} corresponding to the five native aflatoxins, which were subsequently extracted with acetonitrile–water (50 + 50, v/v), followed by centrifugation, filtration, and LC-MS/MS analysis. In addition to certified milk powder and animal feed, th

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Moriyasu, Takako, Keiko Minowa, Miho Sakamoto, et al. "Differentiation Between Sulfoaildenafil and Its Analogs." Journal of AOAC INTERNATIONAL 94, no. 6 (2011): 1770–77. http://dx.doi.org/10.5740/jaoacint.10-425.

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Abstract An analog of aildenafil, which is a potent and highly selective inhibitor of phosphodiesterase 5, was found in a dietary supplement marketed for enhancement of sexual function. The compound was isolated by silica gel column chromatography, and its structure was identified by means of 13C-NMR spectrometry, 1H-NMR spectrometry, high-resolution MS, and X-ray structure determination. The compound was identified to be sulfoaildenafil (other names: thioaildenafil, dimethyl sildenafil thione, and thiomethisosildenafil). Sulfoaildenafil is very similar to the compound thiohomosildenafil. As i

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Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "LC-MS and GC-MS Spectrometry Based Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Pyridoxine Using LC-MS and GC-MS Spectrometry." Advances in Nanomedicine and Nanotechnology Research 2, no. 3 (2021): 198–205. https://doi.org/10.5281/zenodo.10361257.

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Pyridoxine (vitamin B6) is commonly found in foods and dietary supplements, has an important role in physiologic development. In this study, the influence of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of vitamin B6 were evaluated using LC-MS and GC-MS. Vitamin B6 sample was divided into two parts and termed as control and treated samples. Only the treated vitamin B6 was received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a well-known Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of

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Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "LC-MS and GC-MS Spectrometry Based Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Pyridoxine Using LC-MS and GC-MS Spectrometry." Advances in Nanomedicine and Nanotechnology Research 2, no. 3 (2021): 198–205. https://doi.org/10.5281/zenodo.10361261.

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Pyridoxine (vitamin B6) is commonly found in foods and dietary supplements, has an important role in physiologic development. In this study, the influence of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of vitamin B6 were evaluated using LC-MS and GC-MS. Vitamin B6 sample was divided into two parts and termed as control and treated samples. Only the treated vitamin B6 was received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a well-known Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of

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9

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "LC-MS and GC-MS Spectrometry Based Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Pyridoxine Using LC-MS and GC-MS Spectrometry." Advances in Nanomedicine and Nanotechnology Research 2, no. 3 (2021): 198–205. https://doi.org/10.5281/zenodo.10361259.

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Pyridoxine (vitamin B6) is commonly found in foods and dietary supplements, has an important role in physiologic development. In this study, the influence of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of vitamin B6 were evaluated using LC-MS and GC-MS. Vitamin B6 sample was divided into two parts and termed as control and treated samples. Only the treated vitamin B6 was received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a well-known Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of

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Grocholska, Paulina, and Remigiusz Bąchor. "Trends in the Hydrogen−Deuterium Exchange at the Carbon Centers. Preparation of Internal Standards for Quantitative Analysis by LC-MS." Molecules 26, no. 10 (2021): 2989. http://dx.doi.org/10.3390/molecules26102989.

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The application of internal standards in quantitative and qualitative bioanalysis is a commonly used procedure. They are usually isotopically labeled analogs of the analyte, used in quantitative LC-MS analysis. Usually, 2H, 13C, 15N and 18O isotopes are used. The synthesis of deuterated isotopologues is relatively inexpensive, however, due to the isotopic effect of deuterium and the lack of isotopologue co-elution, usually they are not considered as good internal standards for LC-MS quantification. On the other hand, the preparation of 13C, 15N and 18O containing standards of drugs and their m

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Qasem, Rani J., Ibrahim K. Frah, Ahmad S. Aljada, and Faisal A. Sehli. "Bioanalysis of plasma acetate levels without derivatization by LC–MS/MS." Bioanalysis 13, no. 5 (2021): 373–86. http://dx.doi.org/10.4155/bio-2020-0294.

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Background: The acetate ion has important physiological functions and important therapeutic applications. A rapid LC–MS/MS method is described to measure acetate ions in human plasma without chemical derivatization. Materials & methods: A 200 μl sample was spiked with the internal standard 1,2-13C-acetate and proteins precipitated with trichloroacetic acid. The supernatant was recovered and separated under acidic conditions on a C18-column. The eluent was alkalinized by post-column infusion of methanolic ammonium hydroxide. Acetate ions were monitored on a low resolution mass spectrometer

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Zhang, Kai, Jon W. Wong, Zhengwei Jia, Marta Vaclavikova, Mary W. Trucksess, and Timothy H. Begley. "Screening Multimycotoxins in Food-Grade Gums by Stable Isotope Dilution and Liquid Chromatography/Tandem Mass Spectrometry." Journal of AOAC INTERNATIONAL 97, no. 3 (2014): 889–95. http://dx.doi.org/10.5740/jaoacint.13-263.

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Abstract Stable isotope dilution with LC/MS/MS was used to determine the following 11 mycotoxins in food grade gums: aflatoxins B1, B2, G1, and G2; deoxynivalenol; fumonisins B1, B2, and B3; ochratoxin A; T-2 toxin; and zearalenone. Samples were fortified with 11 [13C]-uniformly labeled internal standard ([13C]-IS) mycotoxins that corresponded to the 11 target mycotoxins and extracted by acetonitrile–water (4 + 1, v/v), followed by LC/MS/MS analysis. Mycotoxins were quantitated with the fortified [13C]-IS in each sample. The average recoveries of aflatoxins B1, B2, G1, and G2 (1, 5, and 25 μg/

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Li, Dan, Justin A. Steimling, Joseph D. Konschnik, Scott L. Grossman, and Ty W. Kahler. "Quantitation of Mycotoxins in Four Food Matrices Comparing Stable Isotope Dilution Assay (SIDA) with Matrix-Matched Calibration Methods by LC–MS/MS." Journal of AOAC International 102, no. 6 (2019): 1673–80. http://dx.doi.org/10.5740/jaoacint.19-0028.

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Background: Mycotoxins are big concerns in food safety. Analytical methods are important for the evaluation of mycotoxins in different food commodities. Objective: In this study, stable isotope dilution assay (SIDA) was compared with a matrix-matched calibration method for the quantification of mycotoxins in four different commercially available commodities and two reference materials. Methods: All samples were extracted with water–acetonitrile (50+50, v/v), followed by filtration and LC–tandem MS analysis. Results: SIDA calibration accuracies ranged from 78.6 to 112% with relative SDs (RSDs)

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Li, Dan, Justin A. Steimling, Joseph D. Konschnik, Scott L. Grossman, and Ty W. Kahler. "Quantitation of Mycotoxins in Four Food Matrices Comparing Stable Isotope Dilution Assay (SIDA) with Matrix-Matched Calibration Methods by LC–MS/MS." Journal of AOAC INTERNATIONAL 102, no. 6 (2019): 1673–80. http://dx.doi.org/10.1093/jaoac/102.6.1673.

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Abstract Background: Mycotoxins are big concerns in food safety. Analytical methods are important for the evaluation of mycotoxins in different food commodities. Objective: In this study, stable isotope dilution assay (SIDA) was compared with a matrix-matched calibration method for the quantification of mycotoxins in four different commercially available commodities and two reference materials. Methods: All samples were extracted with water–acetonitrile (50+50, v/v), followed by filtration and LC–tandem MS analysis. Results: SIDA calibration accuracies ranged from 78.6 to 112% with relative SD

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15

Jankowski, C. K., M. R. Van Calsteren, N. Aychet, J. F. Dozol, C. Moulin, and C. Lamouroux. "Study of the nitration of di-n-octylcrown-6 calix[4]arene using LCMS, NMR, and molecular modelling." Canadian Journal of Chemistry 83, no. 8 (2005): 1098–113. http://dx.doi.org/10.1139/v05-126.

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The selective HNO3 nitration of di-n-octylcrown-6 calix[4]arene using different conditions, studied with LCMS and NMR (1H and 13C) spectroscopic techniques, lead to the identification of most of the expected nitro derivative isomeric compounds. The formation of these isomers under acidic and radiolytic conditions is discussed with the help of molecular modelling.Key words: calix crown compounds, nitration of calixarenes, NMR of isomeric nitrocalixarenes, LC-ESI-MS.

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16

Fiby, Iris, Marta Magdalena Sopel, Herbert Michlmayr, Gerhard Adam, and Franz Berthiller. "Development and Validation of an LC-MS/MS Based Method for the Determination of Deoxynivalenol and Its Modified Forms in Maize." Toxins 13, no. 9 (2021): 600. http://dx.doi.org/10.3390/toxins13090600.

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The Fusarium mycotoxin deoxynivalenol (DON) is a common contaminant of cereals and is often co-occurring with its modified forms DON-3-glucoside (D3G), 3-acetyl-DON (3ADON) or 15-acetyl-DON (15ADON). A stable-isotope dilution liquid chromatography-tandem mass spectrometry (LC-MS/MS) based method for their determination in cereals was developed and validated for maize. Therefore, 13C-labelled D3G was enzymatically produced using 13C-DON and [13C6Glc]-sucrose and used as an internal standard (IS) for D3G, while uniformly 13C labelled IS was used for the other mycotoxins. Baseline separation was

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Loh, Tze Ping, Chung Shun Ho, Michaela F. Hartmann та ін. "Influence of isotopically labeled internal standards on quantification of serum/plasma 17α-hydroxyprogesterone (17OHP) by liquid chromatography mass spectrometry". Clinical Chemistry and Laboratory Medicine (CCLM) 58, № 10 (2020): 1731–39. http://dx.doi.org/10.1515/cclm-2020-0318.

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AbstractObjectivesOur recent survey of 44 mass spectrometry laboratories across 17 countries identified variation in internal standard (IS) choice for the measurement of serum/plasma 17α-hydroxyprogesterone (17OHP) by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The choice of IS may contribute to inter-method variations. This study evaluated the effect of two common isotopically labeled IS on the quantification of 17OHP by LC-MS/MS.MethodsThree collaborating LC-MS/MS laboratories from Asia, Europe and Australia, who routinely measure serum 17OHP, compared two IS, (1) IsoSciences

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Blachnio-Zabielska, Agnieszka U., Piotr Zabielski, and Michael D. Jensen. "Intramyocellular diacylglycerol concentrations and [U-13C]palmitate isotopic enrichment measured by LC/MS/MS." Journal of Lipid Research 54, no. 6 (2013): 1705–11. http://dx.doi.org/10.1194/jlr.d035006.

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Çelebier, Mustafa, Tuba Reçber, Emirhan Nemutlu, and Sedef Kır. "Ultrafiltration-based Extraction and LC-MS/MS Quantification of Phenylalanine in Human Blood Sample for Metabolite Target Analysis." Current Pharmaceutical Analysis 17, no. 1 (2020): 81–86. http://dx.doi.org/10.2174/1573412915666190715095300.

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Background: Phenylalanine is a significant biomarker for various diseases like phenylketonuria, gastric cancers, and ischemic stroke according to recent studies. Methods: In the present study; a simple, sensitive, selective and novel analytical method was validated by using an ultrafiltration-based extraction and LC-MS/MS quantification of phenylalanine in human plasma using 13C phenylalanine heavy isotope. Amicon® Ultra Centrifugal Filter was used for ultrafiltration. Parameters affecting LC separation and MS/MS detection were investigated and optimized. Chromatographic separation was achieve

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Fiadorwu, Joshua, Kiran Subedi, Daniel Todd, and Mufeed M. Basti. "Multipronged Approach to Profiling Metabolites in Beta vulgaris L. Dried Pulp Extracts Using Chromatography, NMR and Other Spectroscopy Methods." Foods 12, no. 18 (2023): 3510. http://dx.doi.org/10.3390/foods12183510.

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Beetroot (Beta vulgaris L.) is known for being a rich source of phytochemicals, minerals and vitamins. This study aims to show how the combination of extraction/chromatography/mass spectrometry and NMR offers an efficient way to profile metabolites in the extracts of beetroot. Such combination may lead to the identification of more nutritional or medicinal compounds in natural products, and it is essential for our ongoing investigation to study the selective adsorption/desorption of these metabolites’ on/off nanoparticles. The aqueous and organic extracts underwent analyses using UV-vis spectr

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Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, Gopal Nayak, and Snehasis Jana. "Evaluation of the Impact of Consciousness Energy Healing Treatment on the Isotopic Abundance Ratios (PM+1/PM and PM+2/PM) of Ofloxacin." Journal of New Developments in Chemistry 2, no. 3 (2019): 49–58. http://dx.doi.org/10.14302/issn.2377-2549.jndc-19-3080.

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Ofloxacin is a class of fluorinated quinolone antibiotics, useful against most of the Gram-positive and Gram-negative bacterial infections. This study was designed to investigate the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of ofloxacin using LC-MS and GC-MS spectroscopy. Ofloxacin sample was divided into control and treated parts. The control ofloxacin did not receive the Consciousness Energy Healing Treatment, while the treated ofloxacin receives the Consciousness Energy Healing Treatment remotely by a

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Chen, Yuhong, Melissa R. Snyder, Yi Zhu та ін. "Simultaneous Phenotyping and Quantification of α-1-Antitrypsin by Liquid Chromatography–Tandem Mass Spectrometry". Clinical Chemistry 57, № 8 (2011): 1161–68. http://dx.doi.org/10.1373/clinchem.2011.163006.

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BACKGROUND α-1-Antitrypsin (A1AT) deficiency results from a genetic disorder at 2 common loci. Diagnosis requires quantification of A1AT and subsequent identification of the specific variant. The current algorithm of laboratory testing for the diagnosis of A1AT deficiency uses a combination of quantification (nephelometry), genotyping, and/or phenotyping. We developed a multiple reaction monitoring liquid chromatography–tandem mass spectrometry (LC-MS/MS) method for simultaneous quantification of A1AT and identification of the 2 most common deficiency alleles present in 95% of the patients wit

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "LC-MS and GC-MS Based Isotopic Abundance Ratio Analysis of Consciousness Energy Healing Treated Ofloxacin." Significances of Bioengineering & Biosciences 4, no. 3 (2020): 355–61. https://doi.org/10.5281/zenodo.10350012.

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Ofloxacin is a broad-spectrum antibiotic, which is useful for the treatment of many Gram-positive and Gram-negative bacterial infections. This study was designed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of ofloxacin using LC-MS and GC-MS spectroscopy. Ofloxacin sample was divided into two parts, one part of ofloxacin was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Healing Treatment remotely

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "LC-MS and GC-MS Based Isotopic Abundance Ratio Analysis of Consciousness Energy Healing Treated Ofloxacin." Significances of Bioengineering & Biosciences 4, no. 3 (2020): 355–61. https://doi.org/10.5281/zenodo.10350010.

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Ofloxacin is a broad-spectrum antibiotic, which is useful for the treatment of many Gram-positive and Gram-negative bacterial infections. This study was designed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of ofloxacin using LC-MS and GC-MS spectroscopy. Ofloxacin sample was divided into two parts, one part of ofloxacin was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Healing Treatment remotely

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "LC-MS and GC-MS Based Isotopic Abundance Ratio Analysis of Consciousness Energy Healing Treated Ofloxacin." Significances of Bioengineering & Biosciences 4, no. 3 (2020): 355–61. https://doi.org/10.31031/SBB.2020.04.000586.

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Ofloxacin is a broad-spectrum antibiotic, which is useful for the treatment of many Gram-positive and Gram-negative bacterial infections. This study was designed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of ofloxacin using LC-MS and GC-MS spectroscopy. Ofloxacin sample was divided into two parts, one part of ofloxacin was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Healing Treatment remotely

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Chen, Zhaohui, Michael P. Caulfield, Michael J. McPhaul, Richard E. Reitz, Steven W. Taylor, and Nigel J. Clarke. "Quantitative Insulin Analysis Using Liquid Chromatography–Tandem Mass Spectrometry in a High-Throughput Clinical Laboratory." Clinical Chemistry 59, no. 9 (2013): 1349–56. http://dx.doi.org/10.1373/clinchem.2012.199794.

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BACKGROUND Circulating insulin concentrations reflect the amount of endogenous insulin produced by the pancreas and can be monitored to check for insulin resistance. Insulin is commonly measured using immunochemiluminometric assays (ICMA). Unfortunately, differing crossreactivities of the various ICMA antibodies have led to variability in assay results. In contrast, liquid chromatography–tandem mass spectrometry (LC-MS/MS)-based approaches can provide a highly specific alternative to immunoassays. METHODS Insulin was extracted from patient serum and reduced to liberate the insulin B chain. Sub

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Alshishani, Anas, Inas Hasan, Fatima Ghanayem, Sewar Al-khasawneh, D. F. Chowdhury, and Alaa Abu Dayah. "Rapid LC-MS/MS method for determination of scopolamine in human plasma." Pharmacia 69, no. 4 (2022): 1035–40. http://dx.doi.org/10.3897/pharmacia.69.e94441.

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Sensitive, simple, and fast LC-MS/MS method for the determination of Scopolamine in human plasma was developed and validated. Liquid-Liquid extraction technique was used for sample preparation. Cyano bonded phase column (150 × 4.6 mm, 5 µm) was used for the separation with an isocratic elution of ammonium format buffer:methanol (60:40) mobile phase at a flow rate of 1 ml.min-1 over 3.8 min run time. Scopolamine and [13C,2H3]-Scopolamine, as internal standard, were detected and quantified in positive ion mode via MRM at m/z 304/138 and m/z 308/142, respectively. The developed method was validat

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Kim, Kyoung Soon, Youmie Park, Sanghyun Lee, Dong Cheul Moon, and Bak‐Kwang Kim. "Stability of 13C‐Urea/PEG Capsules by LC‐APCI‐MS." Journal of Liquid Chromatography & Related Technologies 26, no. 8 (2003): 1275–86. http://dx.doi.org/10.1081/jlc-120020110.

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Metronidazole Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology 2, no. 3 (2020): 26–36. http://dx.doi.org/10.14302/issn.2328-0182.japst-20-3618.

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Metronidazole is an antibiotic and useful for the antibacterial and antiprotozoal medication. This study was performed to investigate the impact of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole using LC-MS and GC-MS spectroscopy. Metronidazole sample was divided into two parts, one part of metronidazole was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Metronidazole Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology 2, no. 3 (2020): 26–36. https://doi.org/10.5281/zenodo.10349206.

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Metronidazole is an antibiotic and useful for the antibacterial and antiprotozoal medication. This study was performed to investigate the impact of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole using LC-MS and GC-MS spectroscopy. Metronidazole sample was divided into two parts, one part of metronidazole was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Metronidazole Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology 2, no. 3 (2020): 26–36. https://doi.org/10.5281/zenodo.10349211.

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Metronidazole is an antibiotic and useful for the antibacterial and antiprotozoal medication. This study was performed to investigate the impact of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole using LC-MS and GC-MS spectroscopy. Metronidazole sample was divided into two parts, one part of metronidazole was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy

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Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Metronidazole Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology 2, no. 3 (2020): 26–36. https://doi.org/10.14302/issn.2328-0182.japst-20-3618.

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Metronidazole is an antibiotic and useful for the antibacterial and antiprotozoal medication. This study was performed to investigate the impact of the Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole using LC-MS and GC-MS spectroscopy. Metronidazole sample was divided into two parts, one part of metronidazole was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy

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33

Bouajila, J., G. Raffin, H. Waton, C. Sanglar, J. O. Païsse, and M. F. Grenier-Loustalot. "Phenolic Resins (II) – Influence of the Chemical Structure of High Molecular Weight Molecules on the Mechanisms of Cross-linking and on the Final Structure of the Resins." Polymers and Polymer Composites 11, no. 4 (2003): 233–62. http://dx.doi.org/10.1177/096739110301100401.

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The physicochemical characterization of the structures of the oligomers (n < 4) in resols has been carried out by fragmenting monomers in LC/UV/MS and LC/UV/MS/MS. Fragmentation mechanisms are related to the numbers and positions of substituents on the aromatic ring and to the types of oligomer junctions. It was more difficult to determine the structures of phenol hemiacetals and dimer hemiacetals because of the large number of position isomers. The resols were prepared with differing molar ratios R = Formaldehyde/Phenol and catalysts. They were cross-linked using two industrially recommend

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34

Feith, André, Attila Teleki, Michaela Graf, Lorenzo Favilli, and Ralf Takors. "HILIC-Enabled 13C Metabolomics Strategies: Comparing Quantitative Precision and Spectral Accuracy of QTOF High- and QQQ Low-Resolution Mass Spectrometry." Metabolites 9, no. 4 (2019): 63. http://dx.doi.org/10.3390/metabo9040063.

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Dynamic 13C-tracer-based flux analyses of in vivo reaction networks still require a continuous development of advanced quantification methods applying state-of-the-art mass spectrometry platforms. Utilizing alkaline HILIC chromatography, we adapt strategies for a systematic quantification study in non- and 13C-labeled multicomponent endogenous Corynebacterium glutamicum extracts by LC-QTOF high resolution (HRMS) and LC-QQQ tandem mass spectrometry (MS/MS). Without prior derivatization, a representative cross-section of 17 central carbon and anabolic key intermediates were analyzed with high se

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35

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Characterization of the Consciousness Energy Healing Treated Cholecalciferol Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology 2, no. 4 (2021): 40–50. http://dx.doi.org/10.14302/issn.2328-0182.japst-21-3772.

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Vitamin D3 (cholecalciferol) is a fat-soluble vitamin, which widely used for the prevention and treatment rickets, osteoporosis, arthritis, Parkinson’s and Alzheimer’s diseases, autoimmune disease, dementia, glucose intolerance, etc. The impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cholecalciferol were evaluated using LC-MS and GC-MS spectroscopy. The test sample cholecalciferol was divided into control and treated parts. Only, the treated cholecalciferol was received the Trivedi Effect®-Consciousness Ener

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36

Trivedi, Mahendra Kumar, Dahryn Trivedi, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Characterization of the Consciousness Energy Healing Treated Cholecalciferol Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology (JAPST) 2, no. 4 (2021): 40–50. https://doi.org/10.14302/issn.2328-0182.japst-21-3772.

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Vitamin D3 (cholecalciferol) is a fat-soluble vitamin, which widely used for the prevention and treatment rickets, osteoporosis, arthritis, Parkinson's and Alzheimer's diseases, autoimmune disease, dementia, glucose intolerance, etc. The impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cholecalciferol were evaluated using LC-MS and GC-MS spectroscopy. The test sample cholecalciferol was divided into control and treated parts. Only, the treated cholecalciferol was received the Trivedi Effect®-Consciousness Ener

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37

Trivedi, Mahendra Kumar, Dahryn Trivedi, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Characterization of the Consciousness Energy Healing Treated Cholecalciferol Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology (JAPST) 2, no. 4 (2021): 40–50. https://doi.org/10.5281/zenodo.10362088.

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Vitamin D3 (cholecalciferol) is a fat-soluble vitamin, which widely used for the prevention and treatment rickets, osteoporosis, arthritis, Parkinson's and Alzheimer's diseases, autoimmune disease, dementia, glucose intolerance, etc. The impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cholecalciferol were evaluated using LC-MS and GC-MS spectroscopy. The test sample cholecalciferol was divided into control and treated parts. Only, the treated cholecalciferol was received the Trivedi Effect®-Consciousness Ener

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38

Trivedi, Mahendra Kumar, Dahryn Trivedi, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Characterization of the Consciousness Energy Healing Treated Cholecalciferol Using LC-MS and GC-MS Spectrometry." Journal of Advanced Pharmaceutical Science And Technology (JAPST) 2, no. 4 (2021): 40–50. https://doi.org/10.5281/zenodo.10362086.

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Abstract:

Vitamin D3 (cholecalciferol) is a fat-soluble vitamin, which widely used for the prevention and treatment rickets, osteoporosis, arthritis, Parkinson's and Alzheimer's diseases, autoimmune disease, dementia, glucose intolerance, etc. The impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cholecalciferol were evaluated using LC-MS and GC-MS spectroscopy. The test sample cholecalciferol was divided into control and treated parts. Only, the treated cholecalciferol was received the Trivedi Effect®-Consciousness Ener

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39

Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Silver Sulfadiazine Using LC-MS and GC-MS Spectrometry." Journal of Analytical, Bioanalytical and Separation Techniques (JABST) 4, no. 1 (2020): 1–7. https://doi.org/10.5281/zenodo.10351437.

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Silver sulfadiazine is a sulfonamide-based topical antibiotic used in the partial and full burn to prevent infection. This study was performed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of silver sulfadiazine using LC-MS and GC-MS spectroscopy. Silver sulfadiazine sample was divided into two parts, one part of silver sulfadiazine was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Healing Treatme

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40

Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Silver Sulfadiazine Using LC-MS and GC-MS Spectrometry." Journal of Analytical, Bioanalytical and Separation Techniques (JABST) 4, no. 1 (2020): 1–7. https://doi.org/10.5281/zenodo.10351433.

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Silver sulfadiazine is a sulfonamide-based topical antibiotic used in the partial and full burn to prevent infection. This study was performed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of silver sulfadiazine using LC-MS and GC-MS spectroscopy. Silver sulfadiazine sample was divided into two parts, one part of silver sulfadiazine was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Healing Treatme

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41

Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Analysis of Isotopic Abundance Ratio of Consciousness Energy Healing Treated Silver Sulfadiazine Using LC-MS and GC-MS Spectrometry." Journal of Analytical, Bioanalytical and Separation Techniques (JABST) 4, no. 1 (2020): 1–7. https://doi.org/10.15436/2476-1869.19.3079.

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Silver sulfadiazine is a sulfonamide-based topical antibiotic used in the partial and full burn to prevent infection. This study was performed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of silver sulfadiazine using LC-MS and GC-MS spectroscopy. Silver sulfadiazine sample was divided into two parts, one part of silver sulfadiazine was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Healing Treatme

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42

Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Impact of Consciousness Energy Healing Treatment on the Isotopic Abundance Ratio of Cefazolin Sodium Using LC-MS and GC-MS Spectrometry." Open Access Journal Pharmaceutical Research (OAJPR) 4, no. 4 (2020): 1–8. https://doi.org/10.23880/oajpr-16000221.

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Cefazolin sodium is a broad-spectrum antibiotic useful for the treatment of many Gram-positive and some Gram-negative bacterial infections. This study was designed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cefazolin sodium using LC-MS and GC-MS spectroscopy. Cefazolin sodium sample was divided into two parts, one part of cefazolin sodium was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Hea

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43

Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Impact of Consciousness Energy Healing Treatment on the Isotopic Abundance Ratio of Cefazolin Sodium Using LC-MS and GC-MS Spectrometry." Open Access Journal Pharmaceutical Research (OAJPR) 4, no. 4 (2020): 1–8. https://doi.org/10.5281/zenodo.10349570.

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Cefazolin sodium is a broad-spectrum antibiotic useful for the treatment of many Gram-positive and some Gram-negative bacterial infections. This study was designed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cefazolin sodium using LC-MS and GC-MS spectroscopy. Cefazolin sodium sample was divided into two parts, one part of cefazolin sodium was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Hea

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44

Branton, Alice, Mahendra Kumar Trivedi, Dahryn Trivedi, and Snehasis Jana. "Impact of Consciousness Energy Healing Treatment on the Isotopic Abundance Ratio of Cefazolin Sodium Using LC-MS and GC-MS Spectrometry." Open Access Journal Pharmaceutical Research (OAJPR) 4, no. 4 (2020): 1–8. https://doi.org/10.5281/zenodo.10349568.

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Cefazolin sodium is a broad-spectrum antibiotic useful for the treatment of many Gram-positive and some Gram-negative bacterial infections. This study was designed to investigate the impact of The Trivedi Effect®-Biofield Energy Healing Treatment on the structural properties and the isotopic abundance ratio of cefazolin sodium using LC-MS and GC-MS spectroscopy. Cefazolin sodium sample was divided into two parts, one part of cefazolin sodium was considered as control (no Biofield Energy Treatment was provided), while the second part was treated with The Trivedi Effect®-Consciousness Energy Hea

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45

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Flutamide using LC-MS and GC-MS Spectrometry." Open Access Journal of Cancer & Oncology (OAJCO) 5, no. 1 (2021): 1–9. https://doi.org/10.23880/oajco-16000167.

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Flutamide is used to treat prostate cancer, which acts by blocking the action of exogenous testosterone binding through its androgen receptor. This study was designed and performed to investigate the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of flutamide using LC-MS and GC-MS spectroscopy. Flutamide sample was divided into control and treated parts. Only the treated flutamide received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a famous Biofield Energy Healer, Dahryn Trivedi. The

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46

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Flutamide using LC-MS and GC-MS Spectrometry." Open Access Journal of Cancer & Oncology (OAJCO) 5, no. 1 (2021): 1–9. https://doi.org/10.5281/zenodo.10360617.

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Flutamide is used to treat prostate cancer, which acts by blocking the action of exogenous testosterone binding through its androgen receptor. This study was designed and performed to investigate the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of flutamide using LC-MS and GC-MS spectroscopy. Flutamide sample was divided into control and treated parts. Only the treated flutamide received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a famous Biofield Energy Healer, Dahryn Trivedi. The

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47

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "Isotopic Abundance Ratio Analysis of the Consciousness Energy Healing Treated Flutamide using LC-MS and GC-MS Spectrometry." Open Access Journal of Cancer & Oncology (OAJCO) 5, no. 1 (2021): 1–9. https://doi.org/10.5281/zenodo.10360619.

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Flutamide is used to treat prostate cancer, which acts by blocking the action of exogenous testosterone binding through its androgen receptor. This study was designed and performed to investigate the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of flutamide using LC-MS and GC-MS spectroscopy. Flutamide sample was divided into control and treated parts. Only the treated flutamide received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a famous Biofield Energy Healer, Dahryn Trivedi. The

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48

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "The LC-MS and GC-MS Based Isotopic Abundance Ratio Analysis of the Biofield Energy Treated Metronidazole." Journal of Pharmacy & Pharmaceutics (JPP) 7, no. 1 (2021): 1–6. https://doi.org/10.15436/2377-1313.20.3025.

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Metronidazole is a well-known antibacterial and antiprotozoal antibiotic. In this study, the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole were evaluated using LC-MS and GC-MS spectroscopy. The test sample (metronidazole) was divided into two control and treated parts. Only the treated sample received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of both the samples of metronidazole at the retention t

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49

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "The LC-MS and GC-MS Based Isotopic Abundance Ratio Analysis of the Biofield Energy Treated Metronidazole." Journal of Pharmacy & Pharmaceutics (JPP) 7, no. 1 (2021): 1–6. https://doi.org/10.5281/zenodo.10361586.

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Metronidazole is a well-known antibacterial and antiprotozoal antibiotic. In this study, the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole were evaluated using LC-MS and GC-MS spectroscopy. The test sample (metronidazole) was divided into two control and treated parts. Only the treated sample received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of both the samples of metronidazole at the retention t

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50

Trivedi, Dahryn, Mahendra Kumar Trivedi, Alice Branton, and Snehasis Jana. "The LC-MS and GC-MS Based Isotopic Abundance Ratio Analysis of the Biofield Energy Treated Metronidazole." Journal of Pharmacy & Pharmaceutics (JPP) 7, no. 1 (2021): 1–6. https://doi.org/10.5281/zenodo.10361592.

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Abstract:

Metronidazole is a well-known antibacterial and antiprotozoal antibiotic. In this study, the impact of the Trivedi Effect®-Consciousness Energy Healing Treatment on the structural properties and the isotopic abundance ratio of metronidazole were evaluated using LC-MS and GC-MS spectroscopy. The test sample (metronidazole) was divided into two control and treated parts. Only the treated sample received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Dahryn Trivedi. The LC-MS spectra of both the samples of metronidazole at the retention t

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