Bibliografie tematiche / Spectrum analysis, Mass

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Letteratura scientifica selezionata sul tema "Spectrum analysis, Mass"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 31 gennaio 2023

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Articoli di riviste sul tema "Spectrum analysis, Mass"

1

Walwil, Abdalla Mustafa. "Analysis of Butyl Butyrate Mass Spectrum". International Journal of Chemistry 10, n. 1 (14 gennaio 2018): 11. http://dx.doi.org/10.5539/ijc.v10n1p11.

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The aim of this educational work is targeting chemistry students and interested instructors. The presented work will analyze the mass spectrum of butyl butyrate (butyl butanoate). The analysis will concentrate on the mechanisms showing how the characteristic fragments are formed. The mechanisms discussed in this paper include α-cleavage, β-cleavage, McLafferty Rearrangements, first and second proton transfer, a double proton transfer.
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Matyshev, A. A. "New method of pulsed mass spectrum analysis". Technical Physics 42, n. 1 (gennaio 1997): 72–75. http://dx.doi.org/10.1134/1.1258653.

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Bankova, Zh N., e T. S. Birisen. "Spectral analysis of UV-spectrum elements in steel using portable optical emission spectrometers". Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), n. 2 (9 giugno 2020): 45–47. http://dx.doi.org/10.21122/1683-6065-2020-2-45-47.

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Optical emission spectroscopy is used to determine the mass fraction of elements such as carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, copper, aluminum, molybdenum, vanadium, titanium, arsenic, tin, boron, calcium, etc. Most of the analytical lines of the analyzed elements are located in the visible light spectrum, but the analytical lines of carbon, phosphorus and sulfur are located in the ultraviolet radiation spectrum.Ultraviolet radiation (UV radiation) is electromagnetic radiation that occupies the spectral range between visible and x ray radiation. The wavelengths of UV radiation are in the range from 10 to 400 nm. The area of UV radiation is divided into: near from 400 to 200 nm; far from 380 to 200 nm; vacuum from 200 to 10 nm.Structural particularities of the structure of the optical system of stationary spectrometers allow determining the mass fraction of chemical elements, including phosphorus and sulfur, with sufficient accuracy and reliability. This article discusses the possibility of determining the mass fractions of phosphorus and sulfur, the analytical lines of which lie in the area of ultraviolet radiation, using portable optical emission spectrometers.
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Kelleher, J. K., A. T. Kharroubi, T. A. Aldaghlas, I. B. Shambat, K. A. Kennedy, A. L. Holleran e T. M. Masterson. "Isotopomer spectral analysis of cholesterol synthesis: applications in human hepatoma cells". American Journal of Physiology-Endocrinology and Metabolism 266, n. 3 (1 marzo 1994): E384—E395. http://dx.doi.org/10.1152/ajpendo.1994.266.3.e384.

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Cholesterol synthesis from 13C-labeled precursors produces a discrete spectrum of mass isotopomers detectable using gas chromatography-mass spectrometry. The isotopomer spectral analysis (ISA) method matches the observed spectrum of cholesterol isotopomers with a mathematical model to obtain the best fit of model spectrum to data spectrum. The model was based on multinomial probability expressions that simulate cholesterol synthesis as a condensation of mevalonate fragments. As many as four unknown parameters, representing fluxes between compartments, were included in the model. Models were developed to assess cholesterol synthesis from 13C-enriched precursors including mevalonate, acetate, acetoacetate or octanoate. Models were tested in the human hepatoma cell line, Hep G2, which readily incorporated the 13C substrates into cholesterol. The ISA approach was used to estimate the fractional amount of the cholesterol precursors derived from the 13C substrate and the fraction of total cellular cholesterol synthesized in the presence of the 13C substrate. The study demonstrated the feasibility of the ISA approach for a condensation biosynthesis that is not a simple polymerization and for models with more than two unknown parameters.
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Jimbo, Shuichi, e Yoshihisa Morita. "Lyapunov function and spectrum comparison for a reaction–diffusion system with mass conservation". Journal of Differential Equations 255, n. 7 (ottobre 2013): 1657–83. http://dx.doi.org/10.1016/j.jde.2013.05.021.

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Chen, HaiFeng, BoTao Fan, HaiRong Xia, Michel Petitjean, ShenGang Yuan, Annick Panaye e Jean-Pierre Doucet. "MASSIS: A Mass Spectrum Simulation System. 1. Principle and Method". European Journal of Mass Spectrometry 9, n. 3 (giugno 2003): 175–86. http://dx.doi.org/10.1255/ejms.549.

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A mass spectrum simulation system was developed. The simulated spectrum for a given target structure is computed based on the cleavage knowledge and statistical rules established and stored in pivot databases: cleavage rule knowledge, functional groups, small fragments and fragment-intensity relationships. These databases were constructed from correlation charts and statistical analysis of a large population of organic mass spectra using data mining techniques. Since 1980, several systems have been proposed for mass spectrum simulation, but at present there is no commercial software available. This shows the complexity and difficulties in the development of such a system. The reported mass spectral simulation system in this paper could be the first general software for organic chemistry use.
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Hughey, Christine A., Christopher L. Hendrickson, Ryan P. Rodgers, Alan G. Marshall e Kuangnan Qian. "Kendrick Mass Defect Spectrum: A Compact Visual Analysis for Ultrahigh-Resolution Broadband Mass Spectra". Analytical Chemistry 73, n. 19 (ottobre 2001): 4676–81. http://dx.doi.org/10.1021/ac010560w.

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Berkdemir, Cuneyt, Shi-Bo Cheng e A. W. Castleman. "Assigning the mass spectrum of NbN−: Photoelectron imaging spectroscopy and nominal-mass counterpart analysis". International Journal of Mass Spectrometry 365-366 (maggio 2014): 222–24. http://dx.doi.org/10.1016/j.ijms.2014.03.011.

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ANANTHANARAYAN, B., e P. N. PANDITA. "SPARTICLE MASS SPECTRUM IN GRAND UNIFIED THEORIES". International Journal of Modern Physics A 22, n. 19 (30 luglio 2007): 3229–59. http://dx.doi.org/10.1142/s0217751x07036889.

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We carry out a detailed analysis of sparticle mass spectrum in supersymmetric grand unified theories. We consider the spectroscopy of the squarks and sleptons in SU (5) and SO (10) grand unified theories, and show how the underlying supersymmetry breaking parameters of these theories can be determined from a measurement of different sparticle masses. This analysis is done analytically by integrating the one-loop renormalization group equations with appropriate boundary conditions implied by the underlying grand unified gauge group. We also consider the impact of nonuniversal gaugino masses on the sparticle spectrum, especially the neutralino and chargino masses which arise in supersymmetric grand unified theories with nonminimal gauge kinetic function. In particular, we study the interrelationships between the squark and slepton masses which arise in grand unified theories at the one-loop level, which can be used to distinguish between the different underlying gauge groups and their breaking pattern to the Standard Model gauge group. We also comment on the corrections that can affect these one-loop results.
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Sergeev, V. А., e S. Е. Reschikoff. "Adaptive algorithms for measuring low-frequency noise parameters of semiconductor devices under mass control". Izmeritel`naya Tekhnika, n. 11 (2020): 59–64. http://dx.doi.org/10.32446/0368-1025it.2020-11-59-64.

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The solution of the problem of increasing the confidence and efficiency of quality control of semiconductor devices is considered. The analysis of conditions for measuring the power spectral density of low – frequency noise of semiconductor devices with a spectrum of the form (γ – the spectrum shape indicator) under mass quality control is presented. The error in measuring the power spectral density under the specified measurement conditions strongly depends on the value of the spectrum shape indicator. Adaptive algorithms for measuring low-frequency noise parameters are proposed for cases of a given limit error in measuring the power spectral density and a given time for a single measurement. The proposed algorithms include a preliminary estimation of the value of the spectrum shape indicator and subsequent measurement of the noise power spectral density at the optimal filter bandwidth. The optimal filter bandwidth is determined based on the results of a preliminary assessment of the spectrum shape indicator. For both cases, we obtained estimates of the gain in the sense of the average for the set (ensemble) of controlled products. The possibility of adaptive or cognitive adjustment of the measurement system parameters in the control process based on the results of evaluating sample averages in the training sample is discussed.
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Tesi sul tema "Spectrum analysis, Mass"

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Chan, Chun-yu. "Mass spectrometric analysis of selected glycoproteins". Thesis, Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B3147942X.

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Daigle, J. A. Bernard. "Development of an ion trap mass spectrometer for elemental analysis". Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/30688.

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Mass spectrometry is a widely used technique for the performance of elemental analysis: not only does it provides excellent limits of detection for a large number of elements, but it is also able to provide information about the isotopic distribution of the analyte. The radio-frequency quadrupole ion trap is a relatively new design of mass spectrometer, which offers the ability to confine charged particles for extended periods of time in a well defined volume by applying a radio-frequency oscillating voltage to an arrangement of three electrodes. A mass analysis of the trapped ions can be obtained by selectively extracting the ions from the cavity of the trap, where they can be detected by an electron multiplier. Despite its unique capabilities, to date the applications of the ion trap mass spectrometer have mostly been restricted to gas chromatography detection. Until recently, there have been very few attempts to use it for any other types of routine analysis. Our interest lies in the development of an instrument capable of performing a complete mass spectrometric elemental analysis of small volume liquid samples (a few (μL) at trace or ultra-trace concentration levels. The ability of the ion trap to accumulate ions in its cavity and to provide an entire mass spectrum of these ions in a single scan of the radio-frequency oscillating voltage applied between the electrodes, makes it a very interesting candidate for the ultra-trace analysis of small size samples. However, to perform an analysis on a sample with the ion trap the sample must first be vaporized; and if an elemental analysis is required, the sample will also have to be atomized. The graphite furnace atomizer used in atomic absorption spectroscopy offers a number of advantages which make it potentially useful for this purpose: it has a high transport efficiency of the analyte from liquid or solid state to the vapour phase, the ionization of the analyte in the furnace is very low (as required by the ion trap) and it handles small volume samples very well. A graphite furnace ion trap mass spectrometer was designed to fulfil the need of having instrumentation capable of multielemental mass spectrometric analysis of small volume samples containing traces of the analytes of interest. This document contains a description of the principles of operation of the ion trap as well as a detailed description of the instrument actually built. Data are presented in order to assess the capabilities of the instrument, as well as some of the problems encountered with it. The results obtained with the graphite furnace ion trap mass spectrometer allow us to conclude that the proposed design is not appropriate for the performance of elemental analysis, but is appropriate for mass spectrometric study of low boiling point compounds which can interfere with atomic absorption analysis: it is calculated that these compounds could be analysed at the ppm level. Promising results obtained with a set up in which the analyte is vaporized directly into the cavity of the ion trap through laser ablation are also presented. These limited results show the potential of this methodology for direct elemental analysis of solid samples.
Science, Faculty of
Chemistry, Department of
Graduate
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Nelson, Paul Redfield. "Applications of analytical collisional mass spectrometry". Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/27053.

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Wentzel, Mauritz. "Identification and characterization of novel oncology related platinum complexes using chromatographic and mass spectrometric techniques". Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/715.

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In this thesis mass spectral and chromatographic techniques were developed and applied to identify and characterise numerous novel platinum(II) and (IV) compounds designed as anticancer agents. In a novel method for the synthesis of cis-oxalato(trans- -1,2- cyclohexanediamine)platinum(II) or oxaliplatin these techniques could be applied to differentiate between the molecular complex and the autoionised analogue (viz. Ptdach2 2+Ptox2 2-). In another novel synthetic method for the same compound the ligand exchange reactions at various temperatures could be investigated and kinetic curves obtained served to illuminate the chemistry involved, indicating the role of small amounts of water in the essentially non-aqueous solvent systems dmf and isoamyl alcohol respectively. These allowed ligand exchange without resulting in hydrolyses even up to 85°C. The ionisation rate of divalent platinum halide complexes was determined for various amine ligands as well as N-S chelate ligands. A comparison of these could suggest why N-S complexes have poor anticancer action. Ionisation was not only studied for neutral molecular species but also for monocationic ones. Relationships could be found with stereochemical aspects of the chelates used. By investigating results of EV-CAD studies thermodynamic data could be obtained which indicated that bond strength decreases from chloro to iodo analogues although extent of ionisation in aqueous solution, i.e kinetic stability, is the reverse. Products formed by the reaction of NO2 gas with Platinum(II) compounds could be identified and separated which greatly contributed to the understanding of the chemistry involved in the formation of mononitro platinum(IV) complexes. Some of these proved to have exceptional anticancer properties. Studies of the interaction of thiol containing biomolecules were performed as a function of time. The results contributed to the understanding of the action of the anticancer agents.
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Wang, Yunli. "Mass Spectrum Analysis of a Substance Sample Placed into Liquid Solution". Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/28881.

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Mass spectrometry is an analytical technique commonly used for determining elemental composition in a substance sample. For this purpose, the sample is placed into some liquid solution called liquid matrix. Unfortunately, the spectrum of the sample is not observable separate from that of the solution. Thus, it is desired to distinguish the sample spectrum. The analysis is usually based on the comparison of the mixed spectrum with the one of the sole solution. Introducing the missing information about the origin of observed spectrum peaks, the author obtains a classic set up for the Expectation-Maximization (EM) algorithm. The author proposed a mixture modeling the spectrum of the liquid solution as well as that of the sample. A bell-shaped probability mass function obtained by discretization of the univariate Gaussian probability density function was proposed or serving as a mixture component. The E- and M- steps were derived under the proposed model. The corresponding R program is written and tested on a small but challenging simulation example. Varying the number of mixture components for the liquid matrix and sample, the author found the correct model according to Bayesian Information Criterion. The initialization of the EM algorithm is a difficult standalone problem that was successfully resolved for this case. The author presents the findings and provides results from the simulation example as well as corresponding illustrations supporting the conclusions.
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Carlson, Richard Earl. "Structural and mechanistic studies by modern mass spectrometry". Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/27856.

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Peppe, Salvatore. "Some unusual, astronomically significant organic molecules". Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09php4241.pdf.

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Appendix inside back cover. "June 2002" Bibliography: leaves 157-168. Experimental and theoretical studies were carried out on a number of unusual organic molecules of potential astronomical significance. The experimental work was corroborated by various theoretical approaches and by utilising computer-based quantum chemical calculations. Various covalently bound, anionic and neutral oxocarbon species were formed and studied. Additionally, two analogous heterocumulenic systems were investigated. Some isomers of either system, when energised, were shown to undergo gas-phase rearrangement processes.
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Sihlbom, Carina. "Mass spectrometry for comparative proteomics of degenerative and regenerative processes in the brain /". Göteborg : Institute of Biomedicine, Sahlgrenska Academy, Göteborg University, 2006. http://hdl.handle.net/2077/774.

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Andersson, Kjell. "Development of a method for comparing amphetamine samples /". Linköping : Univ, 2004. http://www.bibl.liu.se/liupubl/disp/disp2004/tek879s.pdf.

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Russell, Steven Arthur. "Machine learning and in silico modeling for improved identification of peptides from shotgun proteomic Ms/Ms spectra /". Connect to full text via ProQuest. IP filtered, 2005.

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Thesis (Ph.D. in Bioinformatics) -- University of Colorado, 2005.
Typescript. Includes bibliographical references (leaves 116-124). Free to UCDHSC affiliates. Online version available via ProQuest Digital Dissertations;
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Libri sul tema "Spectrum analysis, Mass"

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Snyder, A. Peter. Interpreting protein mass spectra: A comprehensive resource. Washington, DC: American Chemical Society, 1999.

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Snyder, A. Peter. Interpreting protein mass spectra: A comprehensive resource. Oxford: Oxford University Press, 2000.

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Introduction to mass spectrometry. New York: Raven Press, 1985.

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Introduction to mass spectrometry. 3a ed. Philadelphia: Lippincott-Raven, 1997.

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W, Johnstone R. A., a cura di. Mass spectrometry basics. Boca Raton: CRC Press, 2003.

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Urban, Pawel. Time-resolved mass spectrometry. Chichester, West Sussex: John Wiley & Sons, Inc., 2016.

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Watson, J. Throck. Introduction to mass spectrometry: Instrumentation, applications, and strategies for data interpretation. 4a ed. Hoboken, N.J: John Wiley, 2007.

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International Symposium on Mass Spectrometry in the Health and Life Sciences (2nd 1989 San Francisco, Calif.). Biological mass spectrometry: Proceedings of the Second International Symposium on Mass Spectrometry in the Health and Life Sciences, San Francisco, California, U.S.A., August 27-31, 1989. Amsterdam: Elsevier, 1990.

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Rowan, J. T. Pre-concentration method for inductively coupled plasma-mass spectrometry. Las Vegas, NV: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1990.

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Rowan, J. T. Pre-concentration method for inductively coupled plasma-mass spectrometry. Las Vegas, NV: U.S. Environmental Protection Agency, Environmental Monitoring Systems Laboratory, 1990.

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Capitoli di libri sul tema "Spectrum analysis, Mass"

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Ryde, Nils. "An Analysis of the 2.6 — 3.7 Micron Spectrum of R Dor". In Mass-Losing Pulsating Stars and their Circumstellar Matter, 231–32. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0139-7_49.

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Muth, Thilo, Erdmann Rapp, Frode S. Berven, Harald Barsnes e Marc Vaudel. "Tandem Mass Spectrum Sequencing: An Alternative to Database Search Engines in Shotgun Proteomics". In Modern Proteomics – Sample Preparation, Analysis and Practical Applications, 217–26. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41448-5_10.

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Zhao-xian, Zeng, Wei Ya-li e Liu Jin-sheng. "A Method to Automatic Detecting Coronal Mass Ejections in Coronagraph Based on Frequency Spectrum Analysis". In Advances in Intelligent Systems and Computing, 223–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-33030-8_36.

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Rangelova, E., W. van der Wal, M. G. Sideris e P. Wu. "Spatiotemporal Analysis of the GRACE-Derived Mass Variations in North America by Means of Multi-Channel Singular Spectrum Analysis". In Gravity, Geoid and Earth Observation, 539–46. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10634-7_72.

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Matthiesen, Rune. "LC-MS Spectra Processing". In Mass Spectrometry Data Analysis in Proteomics, 59–77. New York, NY: Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9744-2_2.

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Matthiesen, Rune. "LC-MS Spectra Processing". In Mass Spectrometry Data Analysis in Proteomics, 47–63. Totowa, NJ: Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-392-3_2.

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Matthiesen, Rune, Gorka Prieto e Hans Christian Beck. "Comparing Peptide Spectra Matches Across Search Engines". In Mass Spectrometry Data Analysis in Proteomics, 133–43. New York, NY: Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9744-2_5.

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Bunkenborg, Jakob, e Rune Matthiesen. "Interpretation of Tandem Mass Spectra of Posttranslationally Modified Peptides". In Mass Spectrometry Data Analysis in Proteomics, 199–230. New York, NY: Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9744-2_8.

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Bunkenborg, Jakob, e Rune Matthiesen. "Interpretation of Tandem Mass Spectra of Posttranslationally Modified Peptides". In Mass Spectrometry Data Analysis in Proteomics, 139–71. Totowa, NJ: Humana Press, 2013. http://dx.doi.org/10.1007/978-1-62703-392-3_6.

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Mirocha, C. J., R. J. Pawlosky e D. W. Hewetson. "Gas chromatography/mass spectral analysis of trichothecenes". In Diagnosis of Mycotoxicoses, 305–22. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4235-6_26.

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Atti di convegni sul tema "Spectrum analysis, Mass"

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Yu, Rongdong, Tao Ma, Yin Zhang, Sanyuan Zhang, Guangyi Liu, Xiaoqiong Ma, Jun Yang, Ziyang Liu, Lin Du e Qi Liu. "LMSAD: Lipid Mass Spectrum Analysis Database". In 2010 International Conference on Biomedical Engineering and Computer Science (ICBECS). IEEE, 2010. http://dx.doi.org/10.1109/icbecs.2010.5462319.

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Sukhoruchkin, Sergey. "Analysis of the particle mass spectrum PDG-2016". In The European Physical Society Conference on High Energy Physics. Trieste, Italy: Sissa Medialab, 2018. http://dx.doi.org/10.22323/1.314.0746.

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Fei, Zhengcong. "Improving Tandem Mass Spectra Analysis with Hierarchical Learning". In Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. California: International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/599.

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Tandem mass spectrometry is the most widely used technology to identify proteins in a complex biological sample, which produces a large number of spectra representative of protein subsequences named peptide. In this paper, we propose a hierarchical multi-stage framework, referred as DeepTag, to identify the peptide sequence for each given spectrum. Compared with the traditional one-stage generation, our sequencing model starts the inference with a selected high-confidence guiding tag and provides the complete sequence based on this guiding tag. Besides, we introduce a cross-modality refining module to asist the decoder focus on effective peaks and fine-tune with a reinforcement learning technique. Experiments on different public datasets demonstrate that our method achieves a new state-of-the-art performance in peptide identification task, leading to a marked improvement in terms of both precision and recall.
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Haidenbauer, J. "Analysis of the pp̄ mass spectrum from J/Ψ decay". In LOW ENERGY ANTIPROTON PHYSICS: Eighth International Conference on Low Energy Antiproton Physics (LEAP '05). AIP, 2005. http://dx.doi.org/10.1063/1.2130150.

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Lan, Zhong, Wei Xu, Xia Zhu e Xuehu Ma. "Microscale Behaviors of Dropwise Condensation: Reflection Spectrum Analysis". In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75254.

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The clustering phenomenon on the solid wall during dropwise condensation is analyzed with reflection spectrum. From the theoretical prediction of the reflectivity for thin liquid films with different thickness on stainless steel surface, it is ascertained that the reflectivity corresponds to the coacervate characteristics of the steam molecular. Furthermore, the experimental data of the reflection spectrum during dropwise condensation in literature also demonstrated that the reflection feature and so as the coacervate characters lie between liquid and steam after the droplet departing during an actual continuous condensation process. The clustering model is used to analyze the results, indicating that clusters form on the blank surface. And it is found that different microstructures of the solid wall would lead to different deposition rates of the clusters, which prompts an effective way to enhance heat transfer process of condensation by accelerating the deposition rate of clusters with surface modification.
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Chen, Hongtao, e Dequn Zhou. "Multifractal Spectrum Analysis of Crude Oil Futures Prices Volatility in NYMEX". In 2010 International Conference on Management and Service Science (MASS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icmss.2010.5576448.

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Waßmuth, Björn, Thomas Giesen, Guido Fuchs e Alexander Breier. "THE MILLIMETER WAVE SPECTRUM OF RARE IRON MONOXIDE ISOTOPOLOGUES: A MASS INDEPENDENT ANALYSIS". In 2020 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2020. http://dx.doi.org/10.15278/isms.2020.tf01.

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Waßmuth, Björn, Thomas Giesen, Guido Fuchs e Alexander Breier. "THE MILLIMETER WAVE SPECTRUM OF RARE IRON MONOXIDE ISOTOPOLOGUES: A MASS INDEPENDENT ANALYSIS". In 2021 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2021. http://dx.doi.org/10.15278/isms.2021.fd03.

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Maurer, Maik, Dennis Janitza e Alexander Ott. "Product- and CAD-Structure Planning Processes for Mass Customization Products". In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58337.

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Mass Customization (MC) is one approach to deal with the continuous increasing demand for individualized products. It’s major objective is to offer products with delivery times and prices comparable to mass produced goods. Hereby assigned possibilities are not only limited to the customization of appearance but affect a multitude of customer requirements, e.g. functions, technical attributes, or structural arrangements. Two major steps in designing customizable products are the product structure planning and the designing of CAD-models. The work presented in this paper specifies the mutual interdependencies as well as the data, which has to be exchanged in this alternating process. For an iteratively optimized planning of customizable products, knowledge will be extracted from parametric design for a further adaptation in the product spectrum structure. Using appropriate algorithms, the need for structure modifications will be derived, with the objective of eliminating critical interdependencies from the basic structure. The alternating data exchange between parametric product modeling and abstract structure planning helps to integrate bi-directional requirements (e.g. new techniques in manufacturing) or boundary conditions appearing at different design phases.
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10

Kumar, V. "Spectrum Analysis of Mesons using Nikiforov-Uvarov Functional Analysis Method". In Functional Materials and Applied Physics. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901878-2.

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Abstract. The analytical expressions for the energy eigenvalues and eigenfunctions are computed for Coulomb perturbed potential by solving the Schrodinger equation within the framework of the Nikiforov-Uvarov functional analysis method and applying the Greene-Aldrich approximation. Using the energy eigenvalue expression, we have determined the mass spectra of cs ̅ and b ̅c mesons. The results of present study are in good agreement with experimental, relativistic and other relevant works available in the literature.
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Rapporti di organizzazioni sul tema "Spectrum analysis, Mass"

1

Mascarin, Anthony, Ted Hannibal, Anand Raghunathan, Ziga Ivanic e Michael Clark. Vehicle Lightweighting: Mass Reduction Spectrum Analysis and Process Cost Modeling. Office of Scientific and Technical Information (OSTI), marzo 2016. http://dx.doi.org/10.2172/1363637.

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Massafferri Rodrigues, Andre. Mass spectrum analysis of K- π+ from the semileptonic decay D+ → K- π+μ+v. Office of Scientific and Technical Information (OSTI), marzo 2004. http://dx.doi.org/10.2172/15020132.

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3

Zinenko, Olena. THE SPECIFICITY OF INTERACTION OF JOURNALISTS WITH THE PUBLIC IN COVERAGE OF PUBLIC EVENTS ON SOCIAL TOPICS. Ivan Franko National University of Lviv, febbraio 2021. http://dx.doi.org/10.30970/vjo.2021.49.11056.

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Consideration of aspects of the functioning of mass media in society requires a comprehensive approach based on universal media theory. The article presents an attempt to consider public events in terms of a functional approach to understanding the media, proposed by media theorist Dennis McQuayl in the theory of mass communication. Public events are analyzed, on the one hand, as a complex object of journalistic reflection and, on the other hand, as a situational media that examines the relationship of agents of the social and media fields in the space of communication interaction. Taking into account philosophical approaches to the interpretation of the concept of event, considering its semantic spectrum, specificity of use and synonyms in the Ukrainian language, a working definition of the concept of public event is given. Based on case-analysis of public events, In accordance with the functions of the media the functions of public events are outlined. This is is promising for the development of study on typology of public events in the context of mass communication theory. The realization of the functions of public events as situational media is illustrated with such vivid examples of cultural events as «Gogolfest» and «Book Forum in Lviv». The author shows that a functional approach to understanding public events in society and their place in the space of mass communication, opens prospects for studying the role of media in reflecting the phenomena of social reality, clarifying the presence and quality of communication between media producers and media consumers.
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Kunze, Eric. Lateral Mixing DRI Analysis: Submesoscale Water-Mass Spectra. Fort Belvoir, VA: Defense Technical Information Center, settembre 2013. http://dx.doi.org/10.21236/ada601168.

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5

Mayer, B. P., C. A. Valdez, A. J. DeHope, P. E. Spackman, R. D. Sanner, H. P. Martinez e A. M. Williams. Multivariate Statistical Analysis of Orthogonal Mass Spectral Data for the Identification of Chemical Attribution Signatures of 3-Methylfentanyl. Office of Scientific and Technical Information (OSTI), novembre 2016. http://dx.doi.org/10.2172/1335778.

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6

Altstein, Miriam, e Ronald Nachman. Rationally designed insect neuropeptide agonists and antagonists: application for the characterization of the pyrokinin/Pban mechanisms of action in insects. United States Department of Agriculture, ottobre 2006. http://dx.doi.org/10.32747/2006.7587235.bard.

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Abstract (sommario):
The general objective of this BARD project focused on rationally designed insect neuropeptide (NP) agonists and antagonists, their application for the characterization of the mechanisms of action of the pyrokinin/PBAN (PK-PBAN) family and the development of biostable, bioavailable versions that can provide the basis for development of novel, environmentally-friendly pest insect control agents. The specific objectives of the study, as originally proposed, were to: (i) Test stimulatory potencies of rationally designed backbone cyclic (BBC) peptides on pheromonotropic, melanotropic, myotropic and pupariation activities; (ii) Test the inhibitory potencies of the BBC compounds on the above activities evoked either by synthetic peptides (PBAN, LPK, myotropin and pheromonotropin) or by the natural endogenous mechanism; (iii) Determine the bioavailability of the most potent BBC compounds that will be found in (ii); (iv) Design, synthesize and examine novel PK/PBAN analogs with enhanced bioavailability and receptor binding; (v) Design and synthesize ‘magic bullet’ analogs and examine their ability to selectively kill cells expressing the PK/PBAN receptor. To achieve these goals the agonistic and antagonistic activities/properties of rationally designed linear and BBC neuropeptide (NP) were thoroughly studied and the information obtained was further used for the design and synthesis of improved compounds toward the design of an insecticide prototype. The study revealed important information on the structure activity relationship (SAR) of agonistic/antagonistic peptides, including definitive identification of the orientation of the Pro residue as trans for agonist activity in 4 PK/PBANbioassays (pheromonotropic, pupariation, melanotropic, & hindgut contractile) and a PK-related CAP₂b bioassay (diuretic); indications that led to the identification of a novel scaffold to develop biostbiostable, bioavailable peptidomimetic PK/PBANagonists/antagonists. The work led to the development of an arsenal of PK/PBAN antagonists with a variety of selectivity profiles; whether between different PKbioassays, or within the same bioassay between different natural elicitors. Examples include selective and non-selective BBC and novel amphiphilic PK pheromonotropic and melanotropic antagonists some of which are capable of penetrating the moth cuticle in efficacious quantities. One of the latter analog group demonstrated unprecedented versatility in its ability to antagonize a broad spectrum of pheromonotropic elicitors. A novel, transPro mimetic motif was proposed & used to develop a strong, selective PK agonist of the melanotropic bioassay in moths. The first antagonist (pure) of PK-related CAP₂b diuresis in flies was developed using a cisPro mimetic motif; an indication that while a transPro orientation is associated with receptor agonism, a cisPro orientation is linked with an antagonist interaction. A novel, biostablePK analog, incorporating β-amino acids at key peptidase-susceptible sites, exhibited in vivo pheromonotropic activity that by far exceeded that of PBAN when applied topically. Direct analysis of neural tissue by state-of-the-art MALDI-TOF/TOF mass spectrometry was used to identify specific PK/PK-related peptides native to eight arthropod pest species [house (M. domestica), stable (S. calcitrans), horn (H. irritans) & flesh (N. bullata) flies; Southern cattle fever tick (B. microplus), European tick (I. ricinus), yellow fever mosquito (A. aegypti), & Southern Green Stink Bug (N. viridula)]; including the unprecedented identification of mass-identical Leu/Ile residues and the first identification of NPs from a tick or the CNS of Hemiptera. Evidence was obtained for the selection of Neb-PK-2 as the primary pupariation factor of the flesh fly (N. bullata) among native PK/PK-related candidates. The peptidomic techniques were also used to map the location of PK/PK-related NP in the nervous system of the model fly D. melanogaster. Knowledge of specific PK sequences can aid in the future design of species specific (or non-specific) NP agonists/antagonists. In addition, the study led to the first cloning of a PK/PBAN receptor from insect larvae (S. littoralis), providing the basis for SAR analysis for the future design of 2ⁿᵈgeneration selective and/or nonselective agonists/antagonists. Development of a microplate ligand binding assay using the PK/PBAN pheromone gland receptor was also carried out. The assay will enable screening, including high throughput, of various libraries (chemical, molecular & natural product) for the discovery of receptor specific agonists/antagonists. In summary, the body of work achieves several key milestones and brings us significantly closer to the development of novel, environmentally friendly pest insect management agents based on insect PK/PBANNPs capable of disrupting critical NP-regulated functions.
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