Artykuły w czasopismach: „Mass and Energy spectrometry”

1

Butcher, Colin P. G. "Energy-Dependent Electrospray Ionization Mass Spectrometry". Australian Journal of Chemistry 56, nr 4 (2003): 339. http://dx.doi.org/10.1071/ch03028.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

2

Vékey, Károly. "Internal Energy Effects in Mass Spectrometry". Journal of Mass Spectrometry 31, nr 5 (maj 1996): 445–63. http://dx.doi.org/10.1002/(sici)1096-9888(199605)31:5<445::aid-jms354>3.0.co;2-g.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

3

Baranov, Vladimir. "Ion energy in quadrupole mass spectrometry". Journal of the American Society for Mass Spectrometry 15, nr 1 (styczeń 2004): 48–54. http://dx.doi.org/10.1016/j.jasms.2003.09.006.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

4

Dogra, Akshay. "A Thorough Examination of the Recent Advances in Mass Spectrometry". International Journal for Research in Applied Science and Engineering Technology 11, nr 7 (31.07.2023): 1731–41. http://dx.doi.org/10.22214/ijraset.2023.54964.

Pełny tekst źródła

Streszczenie:

Abstract: Mass spectrometry has become an essential tool in pharmaceutical analysis, revolutionizing drug development, quality assurance, and our understanding of complex biological systems. This review provides a comprehensive overview of recent advances in mass spectrometry for pharmaceutical analysis. We discuss the fundamentals of mass spectrometry, including ionization and mass analysis principles, as well as the various types of mass spectrometers used in pharmaceutical analysis. We explore high-resolution mass spectrometry (HRMS), tandem mass spectrometry (MS/MS), ambient ionization mass spectrometry, and mass spectrometry imaging (MSI), highlighting their applications in drug characterization, quantification, imaging, and biomarker discovery. Furthermore, we examine the challenges faced by mass spectrometry, such as matrix effects and data interpretation, and discuss emerging trends and future perspectives. By understanding the recent advancements and addressing the challenges, mass spectrometry can continue to drive advancements in pharmaceutical analysis and quality assurance

Style APA, Harvard, Vancouver, ISO itp.

5

Calcagnile, Lucio, Antonio D’Onofrio, Mariaelena Fedi, Pier Andrea Mandò, Gianluca Quarta, Filippo Terrasi i Claudio Tuniz. "ACCELERATOR MASS SPECTROMETRY". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 268, nr 7-8 (kwiecień 2010): iii. http://dx.doi.org/10.1016/j.nimb.2009.10.001.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

6

Jiang, Peihe, i Zhanfeng Zhao. "Low-Vacuum Quadrupole Mass Filter Using a Drift Gas". International Journal of Analytical Chemistry 2020 (28.12.2020): 1–9. http://dx.doi.org/10.1155/2020/8883490.

Pełny tekst źródła

Streszczenie:

Performing mass spectrometry in a low-vacuum environment can markedly reduce the cost, size, and power consumption of instrumentation by reducing the workload of the pumping system. Under a low-vacuum environment, ions in a quadrupole mass filter do not have sufficient kinetic energy in the axial direction to reach the detector for mass analysis. To resolve this problem and develop a mass spectrometer suitable for a low-vacuum environment, a mass analysis method is proposed where a drift gas is used to supply energy to the ions. A simulation model was constructed in COMSOL Multiphysics, and a simple experimental device was built to validate the proposed method. The simulation results showed that this method effectively solves these problems, and the obtained spectral peak was superior to that without drift gas flow regarding spectral peak intensity and width. The experimental results showed that the proposed method separated ions with different mass-to-charge ratios at a pressure of 20 Pa. This work provides a theoretical foundation for the development of low-vacuum mass spectrometry, which will promote portability, provide a lower threshold of use, and expand the fields of application for mass spectrometers.

Style APA, Harvard, Vancouver, ISO itp.

7

Czerwinski, B., Ch Palombo, L. Rzeznik, B. J. Garrison, K. Stachura, R. Samson i Z. Postawa. "Organic mass spectrometry with low-energy projectiles". Vacuum 81, nr 10 (czerwiec 2007): 1233–37. http://dx.doi.org/10.1016/j.vacuum.2007.01.026.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

8

Sugiura, Yuki, i Mitsutoshi Setou. "Visualization of energy metabolism by mass spectrometry". Neuroscience Research 68 (styczeń 2010): e444-e445. http://dx.doi.org/10.1016/j.neures.2010.07.1972.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

9

Mészáros, Erika, Emma Jakab, G. Várhegyi i P. Tóvári. "Thermogravimetry/mass spectrometry analysis of energy crops". Journal of Thermal Analysis and Calorimetry 88, nr 2 (maj 2007): 477–82. http://dx.doi.org/10.1007/s10973-006-8102-4.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

10

Cooks, R. G., i O. W. Hand. "Tandem mass spectrometry at low kinetic energy". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 29, nr 1-2 (listopad 1987): 427–36. http://dx.doi.org/10.1016/0168-583x(87)90277-1.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

11

Laskin, J., i C. Lifshitz. "Kinetic energy release distributions in mass spectrometry". Journal of Mass Spectrometry 36, nr 5 (2001): 459–78. http://dx.doi.org/10.1002/jms.164.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

12

Harrison, Alex G. "Linear free energy correlations in mass spectrometry". Journal of Mass Spectrometry 34, nr 6 (czerwiec 1999): 577–89. http://dx.doi.org/10.1002/(sici)1096-9888(199906)34:6<577::aid-jms829>3.0.co;2-z.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

13

Van Berkel, Gary J., Gary L. Glish, Scott A. McLuckey i Albert A. Tuinman. "High-pressure ammonia chemical ionization mass spectrometry and mass spectrometry/mass spectrometry for porphyrin structure determination". Energy & Fuels 4, nr 6 (listopad 1990): 720–29. http://dx.doi.org/10.1021/ef00024a018.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

14

Frank, Matthias, Simon E. Labov, Garrett Westmacott i W. Henry Benner. "Energy-sensitive cryogenic detectors for high-mass biomolecule mass spectrometry". Mass Spectrometry Reviews 18, nr 3-4 (1999): 155–86. http://dx.doi.org/10.1002/(sici)1098-2787(1999)18:3/4<155::aid-mas1>3.0.co;2-w.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

15

Povinec, P., M. Betti, A. Jull i P. Vojtyla. "New isotope technologies in environmental physics". Acta Physica Slovaca. Reviews and Tutorials 58, nr 1 (1.02.2008): 1–154. http://dx.doi.org/10.2478/v10155-010-0088-6.

Pełny tekst źródła

Streszczenie:

New isotope technologies in environmental physicsAs the levels of radionuclides observed at present in the environment are very low, high sensitive analytical systems are required for carrying out environmental investigations. We review recent progress which has been done in low-level counting techniques in both radiometrics and mass spectrometry sectors, with emphasis on underground laboratories, Monte Carlo (GEANT) simulation of background of HPGe detectors operating in various configurations, secondary ionisation mass spectrometry, and accelerator mass spectrometry. Applications of radiometrics and mass spectrometry techniques in radioecology and climate change studies are presented and discussed as well. The review should help readers in better orientation on recent developments in the field of low-level counting and spectrometry, and to advice on construction principles of underground laboratories, as well as on criteria how to choose low or high energy mass spectrometers for environmental investigations.

Style APA, Harvard, Vancouver, ISO itp.

16

Wensing, Michael W., A. Peter Snyder i Charles S. Harden. "Energy Resolved Mass Spectrometry of Dialkyl Methylphosphonates with an Atmospheric Pressure Ionization Tandem Mass Spectrometer". Rapid Communications in Mass Spectrometry 10, nr 10 (31.07.1996): 1259–65. http://dx.doi.org/10.1002/(sici)1097-0231(19960731)10:10<1259::aid-rcm646>3.0.co;2-7.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

17

Sandström, J., P. Andersson, K. Fritioff, D. Hanstorp, R. Thomas, D. J. Pegg i K. Wendt. "Laser photodetachment mass spectrometry". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 217, nr 3 (maj 2004): 513–20. http://dx.doi.org/10.1016/j.nimb.2003.11.087.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

18

Parkhomchuk, V. V., A. V. Petrozhitskii, M. M. Ignatov i E. V. Parkhomchuk. "Accelerator Mass Spectrometry “Golden Valley”". SIBERIAN JOURNAL OF PHYSICS 17, nr 3 (17.12.2022): 89–101. http://dx.doi.org/10.25205/2541-9447-2022-17-3-89-101.

Pełny tekst źródła

Streszczenie:

Information about the resources of the laboratory “AMS Golden Valley” and the state of affairs in accelerator mass spectrometry (AMS) in Russia is presented. The key differences of the AMS method from traditional methods for determining radiocarbon are described, the principle of operation of accelerator mass spectrometers of Russian (unique scientific facility “AMS BINP SB RAS”) and Swiss (MICADAS-28) production is given, and basic information is given about the methods for preparing graphite targets for AMS-analysis.

Style APA, Harvard, Vancouver, ISO itp.

19

Chen, T. R., i P. L. Urban. "Mass spectrometry-guided refinement of chemical energy buffers". Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 472, nr 2190 (czerwiec 2016): 20150812. http://dx.doi.org/10.1098/rspa.2015.0812.

Pełny tekst źródła

Streszczenie:

Biocatalytic reactions often require supplying chemical energy and phosphate groups in the form of adenosine triphosphate (ATP). Auxiliary enzymes can be used to convert a reaction by-product—adenosine diphosphate (ADP)—back to ATP. By employing real-time mass spectrometry (RTMS), one can gain an insight into inter-conversions of reactants in multi-enzyme reaction systems and optimize the reaction conditions. In this study, temporal traces of ions corresponding to adenosine monophosphate (AMP), ADP and ATP provided vital information that could be used to adjust activities of the ‘buffering enzymes’. Using the RTMS results as a feedback, we also characterized a bienzymatic energy buffer that enables the recovery of ATP in the cases where it is directly hydrolysed to AMP in the main enzymatic reaction. The significance of careful selection of enzyme activities—guided by RTMS—is exemplified in the synthesis of glucose-6-phosphate by hexokinase in the presence of a buffering enzyme, pyruvate kinase. Relative activities of the two enzymes, present in the reaction mixture, influence biosynthetic reaction yields. This observation supports the conclusion that optimization of chemical energy recycling procedures is critical for the biosynthetic reaction economy.

Style APA, Harvard, Vancouver, ISO itp.

20

Rees, J. Alan, David L. Seymour, Claire-Louise Greenwood, Yolanda Aranda Gonzalvo i David T. Lundie. "Mass and Energy Spectrometry of Atmospheric Pressure Plasmas". Plasma Processes and Polymers 7, nr 2 (4.02.2010): 92–101. http://dx.doi.org/10.1002/ppap.200900122.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

21

Teunissena, Sebastiaan Frans, Damila Rodrigues de Morais, William Franco Carneiro, Leda Maria Saragioto Colpini, Fabio Meurer, Rodrigo Clemente Thom de Souza, Marcos Nogueira Eberlin i Eduardo Cesar Meurer. "Improvement of lipid quality on nile tilapia fillet composition with low protein feeding treatment". Acta Scientiarum. Technology 42 (28.05.2020): e45271. http://dx.doi.org/10.4025/actascitechnol.v42i1.45271.

Pełny tekst źródła

Streszczenie:

The lipid composition is directly related to nutritious significance of fish meat. In this paper we evaluate the possibility of tuning lipid composition of Nile Tilapia fillet changing the feeding treatments with different levels of energy and protein using lipidomic approach. Five feeding treatments were used varying protein and energy content with soy protein, corn carbohydrates and soy oil. Easy Ambient Sonic-Spray Ionization mass spectrometry in negative mode was used for lipidomic characterization of polar lipids in Nile Tilapia fillet, that were extracted using the Bligh & Dyer method and evaluated by principal component analyzes revealing differences over the treatments. High Resolution Mass Spectrometry data obtained were imported into Lipid Maps (www.lipidmaps.org, accessed on 10/19/2018) for molecular identification. The major influence to separate the treatments was protein content, energy does not appear to differentiate the groups. Thirteen different ions were observed as the major differentiators of the groups and nine compounds were identified comparing the mass spectrometric results to Lipidomic library, and they are related to high metabolic activity, lipids with anti-diabetic effect, and fat levels reducers.

Style APA, Harvard, Vancouver, ISO itp.

22

Wensing, Michael W., A. Peter Snyder i Charles S. Harden. "Energy resolved mass spectrometry of diethyl alkyl phosphonates with an atmospheric pressure ionization tandem mass spectrometer". Journal of Mass Spectrometry 30, nr 11 (listopad 1995): 1539–45. http://dx.doi.org/10.1002/jms.1190301104.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

23

Barber, R. C., i K. S. Sharma. "Precise atomic mass measurements by deflection mass spectrometry". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 204 (maj 2003): 460–65. http://dx.doi.org/10.1016/s0168-583x(02)02112-2.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

24

Blais, Jean-Claude, Alain Viari, Richard B. Cole i Jean-Claude Tabet. "Target environment and energy deposition in particle induced desorption: 252Cf plasma desorption mass spectrometry, secondary ions mass spectrometry and fast atom bombardment mass spectrometry". International Journal of Mass Spectrometry and Ion Processes 98, nr 2 (sierpień 1990): 155–66. http://dx.doi.org/10.1016/0168-1176(90)85015-t.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

25

Lu, I.-Chung, Efstathios A. Elia, Wen-Jing Zhang, Milan Pophristic, Ellen D. Inutan, Charles N. McEwen i Sarah Trimpin. "Development of an easily adaptable, high sensitivity source for inlet ionization". Analytical Methods 9, nr 34 (2017): 4971–78. http://dx.doi.org/10.1039/c7ay00995j.

Pełny tekst źródła

Streszczenie:

Unexpected ionization processes were recently discovered for use in mass spectrometry in which no added energy is required to convert condensed-phase molecules to gas-phase ions with ESI-like charge states by simply introducing the matrix/analyte sample into the sub-atmospheric pressure of the mass spectrometer.

Style APA, Harvard, Vancouver, ISO itp.

26

Kieser, W. E., R. P. Beukens, L. R. Kilius, A. E. Litherland, M. J. Nadeau i J. C. Rucklidge. "Accelerator mass spectrometry at Toronto". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 24-25 (kwiecień 1987): 667–71. http://dx.doi.org/10.1016/s0168-583x(87)80221-5.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

27

Frank, Matthias. "Mass spectrometry with cryogenic detectors". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 444, nr 1-2 (kwiecień 2000): 375–84. http://dx.doi.org/10.1016/s0168-9002(99)01409-6.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

28

Fifield, L. K. "Advances in accelerator mass spectrometry". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 172, nr 1-4 (październik 2000): 134–43. http://dx.doi.org/10.1016/s0168-583x(00)00229-9.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

29

Maquestiau, A., Y. van Haverbeke, R. Flammang, M. Abrassart i D. Finet. "Mass Analyzed Ion Kinetic Energy Spectrometry with a Modified AEI MS 902 Spectrometer". Bulletin des Sociétés Chimiques Belges 87, nr 10 (1.09.2010): 765–70. http://dx.doi.org/10.1002/bscb.19780871005.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

30

Skakov, Mazhyn, Arman Miniyazov, Timur Tulenbergenov, Igor Sokolov, Gainiya Zhanbolatova, Assel Kaiyrbekova i Alina Agatanova. "Hydrogen production by methane pyrolysis in the microwave discharge plasma". AIMS Energy 12, nr 3 (2024): 548–60. http://dx.doi.org/10.3934/energy.2024026.

Pełny tekst źródła

Streszczenie:

<abstract> <p>We present the preliminary results of experimental studies on hydrogen production through methane pyrolysis. Based on the analytical review, the technology of methane pyrolysis in the plasma of a microwave discharge was chosen. To implement this method, an installation for applied research PM-6 was developed, and experimental data on the possibility of producing hydrogen was obtained. The methods of mass spectrometry and optical emission spectrometry were used to analyze the products of the methane decomposition reaction. It has been established that at a microwave forward power of 0.6 kW, plasma pyrolysis of methane occurs with the formation of hydrogen, carbon, and hydrocarbons. Preliminary calculations of methane conversion, as a result of the conducted studies, showed a hydrogen selectivity of 4–5%. The developed installation and the applied method are under modernization at the present time.</p> </abstract>

Style APA, Harvard, Vancouver, ISO itp.

31

Napoli, Anna, Leonardo Di Donna, Giovanni Sindona i Elena Urso. "Gas-Phase Chemistry of the Negative Ions of Fully-Protected Peptides by High-Resolution Electrospray Ionization Tandem Mass Spectrometry". European Journal of Mass Spectrometry 11, nr 4 (sierpień 2005): 403–8. http://dx.doi.org/10.1255/ejms.769.

Pełny tekst źródła

Streszczenie:

Fully-protected C-terminal free peptides can be conveniently analyzed by high-resolution electrospray tandem mass spectrometry (ESI-MS/MS) in a quadrupole quadrupole time-of-flight tandem hybrid mass spectrometer, operated in the negative (–) ionization mode. The unusual choice of negative ions in mass spectrometry applications to peptide analysis was needed to obtain exhaustive sequence and structural data. The low-energy collision-induced dissociation (CID) experiments provided, in fact, tandem mass spectra displaying highly diagnostic fragments with a good signal-to-noise ratio. The method is applied to segments of porcine calcitonin (Cal), Cal (10–16, 1), Cal (17–24, 2) and Cal (25–28, 3) whose [M–H]− deprotonated molecular ions provided low-energy CID mass spectra which allow the evaluation either of the primary structure of the peptide and of the location of the side-chain protective groups. ESI (+) MS can be conveniently used, in the high resolution mode, to achieve precise information on the elemental composition of the examined peptides.

Style APA, Harvard, Vancouver, ISO itp.

32

Rabin, M. W., G. C. Hilton i J. M. Martinis. "Application of microcalorimeter energy measurement to biopolymer mass spectrometry". IEEE Transactions on Appiled Superconductivity 11, nr 1 (marzec 2001): 242–47. http://dx.doi.org/10.1109/77.919329.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

33

Doupé, J. P., A. E. Litherland, I. Tomski i X. L. Zhao. "Isobar separation at low energy in accelerator mass spectrometry". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 223-224 (sierpień 2004): 323–27. http://dx.doi.org/10.1016/j.nimb.2004.04.064.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

34

Crawford, Evan, Paul J. Dyson, Orissa Forest, Samantha Kwok i J. Scott McIndoe. "Energy-dependent Electrospray Ionisation Mass Spectrometry of Carbonyl Clusters". Journal of Cluster Science 17, nr 1 (19.01.2006): 47–63. http://dx.doi.org/10.1007/s10876-005-0043-8.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

35

Short, R. T., i P. J. Todd. "Improved energy compensation for time-of-flight mass spectrometry". Journal of the American Society for Mass Spectrometry 5, nr 8 (sierpień 1994): 779–87. http://dx.doi.org/10.1016/1044-0305(94)80011-1.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

36

Kilius, L. R., M. A. Garwan, A. E. Litherland, M.-J. Nadeau, J. C. Rucklidge i X.-L. Zhao. "Heavy element analysis by low energy accelerator mass spectrometry". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 40-41 (kwiecień 1989): 745–49. http://dx.doi.org/10.1016/0168-583x(89)90468-0.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

37

Harrison, Alex G. "ChemInform Abstract: Linear Free Energy Correlations in Mass Spectrometry". ChemInform 30, nr 43 (13.06.2010): no. http://dx.doi.org/10.1002/chin.199943330.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

38

Menachery, Sunil Paul M., Olivier Laprévote, Thao P. Nguyen, Usha K. Aravind, Pramod Gopinathan i Charuvila T. Aravindakumar. "Identification of position isomers by energy-resolved mass spectrometry". Journal of Mass Spectrometry 50, nr 7 (8.06.2015): 944–50. http://dx.doi.org/10.1002/jms.3607.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

39

Ospina, Maria P., David H. Powell i Richard A. Yost. "Internal energy deposition in chemical ionization/tandem mass spectrometry". Journal of the American Society for Mass Spectrometry 14, nr 2 (luty 2003): 102–9. http://dx.doi.org/10.1016/s1044-0305(02)00814-0.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

40

Rodin, A. M., A. V. Belozerov, S. N. Dmitriev, Yu Ts Oganessian, R. N. Sagaidak, V. S. Salamatin, S. V. Stepantsov i D. V. Vanin. "Application of the mass-spectrometer MASHA for mass-spectrometry and laser-spectroscopy". Hyperfine Interactions 196, nr 1-3 (luty 2010): 279–85. http://dx.doi.org/10.1007/s10751-009-0145-z.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

41

Hirata, K., K. Yamada, A. Chiba, Y. Hirano i Y. Saitoh. "Secondary ion mass spectrometry using energetic cluster ion beams: Toward highly sensitive imaging mass spectrometry". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 479 (wrzesień 2020): 240–45. http://dx.doi.org/10.1016/j.nimb.2020.06.027.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

42

Kutschera, W. "Accelerator mass spectrometry in nuclear physics". Journal of Physics G: Nuclear and Particle Physics 17, S (1.12.1991): S335—S347. http://dx.doi.org/10.1088/0954-3899/17/s/035.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

43

Pittenauer, Ernst, i Gunter Allmaier. "High-Energy Collision Induced Dissociation of Biomolecules: MALDITOF/ RTOF Mass Spectrometry in Comparison to Tandem Sector Mass Spectrometry". Combinatorial Chemistry & High Throughput Screening 12, nr 2 (1.02.2009): 137–55. http://dx.doi.org/10.2174/138620709787315436.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

44

STROOBANT, V., E. DEHOFFMANN, R. LIBERT i F. VANHOOF. "Fast-atom bombardment mass spectrometry and low energy collision-induced tandem mass spectrometry of tauroconjugated bile acid anions". Journal of the American Society for Mass Spectrometry 6, nr 7 (lipiec 1995): 588–96. http://dx.doi.org/10.1016/1044-0305(95)00203-p.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

45

Skog, Göran, Ragnar Hellborg i Bengt Erlandsson. "Accelerator Mass Spectrometry at the Lund Pelletron Accelerator". Radiocarbon 34, nr 3 (1992): 468–72. http://dx.doi.org/10.1017/s0033822200063700.

Pełny tekst źródła

Streszczenie:

Three years ago, funds were raised to equip the 3 MV Pelletron accelerator at the Department of Physics, Lund University for accelerator mass spectroscopy (AMS). We have modified the accelerator for mass spectroscopy by relocating focusing devices on both the low- and high-energy side of the accelerator and installing a Wien velocity filter and detectors for measuring the particle energy (E) and energy loss (ΔE). We have been working exclusively with 14C during the initial period. About 40 samples of elemental carbon have been produced, using Fe or Co as catalyst, during the last two years. The 12C− current from these samples is about 3–5 μA using an ANIS sputtering source. We are now planning 14C analyses in the fields of archaeology, Quaternary geology and radioecology.

Style APA, Harvard, Vancouver, ISO itp.

46

Abdoul-Carime, H., F. Mounier, F. Charlieux i H. André. "Correlated ion-(ion/neutral) time of flight mass spectrometer". Review of Scientific Instruments 94, nr 4 (1.04.2023): 045104. http://dx.doi.org/10.1063/5.0141540.

Pełny tekst źródła

Streszczenie:

The fragmentation of molecular systems into ions and neutral species is ubiquitous in fundamental and applied science. While the ion fragments are relatively easily detected by mass spectrometry technique, the information on the neutral product that is formed in correlation is challenging. In this contribution, we present a detailed description of the correlated ion-(ion/neutral) time of flight mass spectrometer, which is dedicated to the study of molecular dissociation induced by electrons at low energies (<20 eV). This new mass spectrometer uptakes the challenge to provide the correlation of ion/neural species produced in low energy electron-molecule collision processes.

Style APA, Harvard, Vancouver, ISO itp.

47

Kaczmarek, Michał, Nanyun Zhang, Ludmila Buzhansky, Sharon Gilead i Ehud Gazit. "Optimization Strategies for Mass Spectrometry-Based Untargeted Metabolomics Analysis of Small Polar Molecules in Human Plasma". Metabolites 13, nr 8 (7.08.2023): 923. http://dx.doi.org/10.3390/metabo13080923.

Pełny tekst źródła

Streszczenie:

The untargeted approach to mass spectrometry-based metabolomics has a wide potential to investigate health and disease states, identify new biomarkers for diseases, and elucidate metabolic pathways. All this holds great promise for many applications in biological and chemical research. However, the complexity of instrumental parameters on advanced hybrid mass spectrometers can make the optimization of the analytical method immensely challenging. Here, we report a strategy to optimize the selected settings of a hydrophilic interaction liquid chromatography-tandem mass spectrometry method for untargeted metabolomics studies of human plasma, as a sample matrix. Specifically, we evaluated the effects of the reconstitution solvent in the sample preparation procedure, the injection volume employed, and different mass spectrometry-related operating parameters including mass range, the number of data-dependent fragmentation scans, collision energy mode, duration of dynamic exclusion time, and mass resolution settings on the metabolomics data quality and output. This study highlights key instrumental variables influencing the detection of metabolites along with suggested settings for the IQ-X tribrid system and proposes a new methodological framework to ensure increased metabolome coverage.

Style APA, Harvard, Vancouver, ISO itp.

48

Jagošová, Klára, Martin Moník, Jaroslav Kapusta, Radka Pechancová, Jana Nádvorníková, Pavel Fojtík, Ondřej Kurka i in. "Secret Recipe Revealed: Chemical Evaluation of Raw Colouring Mixtures from Early 19th Century Moravia". Molecules 27, nr 16 (15.08.2022): 5205. http://dx.doi.org/10.3390/molecules27165205.

Pełny tekst źródła

Streszczenie:

An archaeological excavation in Prostějov (Czech Republic) revealed a workshop of a local potter with colourless, pink, and blue powders presumably used to produce faience/surface decoration. A comprehensive analytical study, which combined elemental and molecular analysis techniques, was performed to shed light on the chemical composition of these unique findings. Scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM EDX), inductively coupled-plasma mass spectrometry (ICP MS), flow injection analysis (FIA) with electrospray ionisation mass spectrometry (ESI MS), laser desorption ionisation mass spectrometry (LDI MS), and Raman spectroscopy were applied to reveal the elemental composition of the powders and identify the colouring agents in the pink and blue powders. The colouring agents in the pink powder were probably iron and the agent in the blue powder is Prussian blue. On top of that, it was also possible to determine the organic additives in these powders through pyrolysis gas chromatography with mass spectrometric detection (Py GC/MS), atmospheric solids analysis probe ion mobility mass spectrometry (ASAP IM MS), and LDI MS. The organic constituents were identified as plant resin, beeswax, and fats. These results point to the preparation of faience/pigment mixtures as oil paint.

Style APA, Harvard, Vancouver, ISO itp.

49

Nyadong, Leonard, Jinfeng Lai, Carol Thompsen, Chris J. LaFrancois, Xinheng Cai, Chunxia Song, Jieming Wang i Wei Wang. "High-Field Orbitrap Mass Spectrometry and Tandem Mass Spectrometry for Molecular Characterization of Asphaltenes". Energy & Fuels 32, nr 1 (22.12.2017): 294–305. http://dx.doi.org/10.1021/acs.energyfuels.7b03177.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

50

Golser, Robin, Hubert Gnaser, Walter Kutschera, Alfred Priller, Peter Steier, Christof Vockenhuber i Anton Wallner. "Accelerator mass spectrometry of molecular ions". Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 240, nr 1-2 (październik 2005): 468–73. http://dx.doi.org/10.1016/j.nimb.2005.06.146.

Pełny tekst źródła

Style APA, Harvard, Vancouver, ISO itp.

Artykuły w czasopismach na temat „Mass and Energy spectrometry”

Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych