Thematische Bibliographien / Line spectrometers

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Auswahl der wissenschaftlichen Literatur zum Thema „Line spectrometers“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 10. Februar 2022

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Zeitschriftenartikel zum Thema "Line spectrometers"

Frey, M., F. Hase, T. Blumenstock, J. Groß, M. Kiel, G. Mengistu Tsidu, K. Schäfer, M. Kumar Sha und J. Orphal. „Use of portable FTIR spectrometers for detecting greenhouse gas emissions of the megacity Berlin – Part 1: Instrumental line shape characterisation and calibration of a quintuple of spectrometers“. Atmospheric Measurement Techniques Discussions 8, Nr. 3 (13.03.2015): 2735–66. http://dx.doi.org/10.5194/amtd-8-2735-2015.

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Abstract. Several low resolution spectrometers were used to investigate the CO2 and CH4 emissions of the megacity Berlin. Before and after the campaign the instruments were tested side-by-side. An excellent level of agreement and stability was found between the different spectrometers: the drifts in XCO2 and XCH4 are within 0.005 and 0.035%, respectively. The instrumental line shape characteristics of all spectrometers were found to be close to nominal. Cross-calibration factors for XCH4 and XCO2 were established for each spectrometer. An empirical airmass correction factor has been applied. As a last calibration step, using a co-located TCCON spectrometer as a reference, a common factor has been derived for the low-resolution campaign spectrometers, which ensures that the records are compatible to the WMO in-situ scale. Finally as a first result of the Berlin campaign we show the excellent agreement of ground pressure values obtained from total column measurements and in situ records.

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Frey, M., F. Hase, T. Blumenstock, J. Groß, M. Kiel, G. Mengistu Tsidu, K. Schäfer, M. K. Sha und J. Orphal. „Calibration and instrumental line shape characterization of a set of portable FTIR spectrometers for detecting greenhouse gas emissions“. Atmospheric Measurement Techniques 8, Nr. 7 (31.07.2015): 3047–57. http://dx.doi.org/10.5194/amt-8-3047-2015.

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Abstract. A comprehensive calibration procedure for mobile, low-resolution, solar-absorption FTIR spectrometers, used for greenhouse gases observations, is developed. These instruments commend themselves for campaign use and deployment at remote sites. The instrumental line shape (ILS) of each spectrometer has been thoroughly characterized by analyzing the shape of H2O signatures in open path spectra. A setup for the external source is suggested and the invariance of derived ILS parameters with regard to chosen path length is demonstrated. The instrumental line shape characteristics of all spectrometers were found to be close to nominal. Side-by-side solar observations before and after a campaign, which involved shipping of all spectrometers to a selected target site and back, are applied for verifying the temporal invariability of instrumental characteristics and for deriving intercalibration factors for XCO2 and XCH4, which take into account residual differences of instrumental characteristics. An excellent level of agreement and stability was found between the different spectrometers: the uncorrected biases in XCO2 and XCH4 are smaller than 0.01 and 0.15 %, respectively, and the drifts are smaller than 0.005 and 0.035 %. As an additional sensitive demonstration of the instrumental performance we show the excellent agreement of ground pressure values obtained from the total column measurements of O2 and barometric records. We find a calibration factor of 0.9700 for the spectroscopic measurements in comparison to the barometric records and a very small scatter between the individual spectrometers (0.02 %). As a final calibration step, using a co-located TCCON (Total Carbon Column Observation Network) spectrometer as a reference, a common scaling factor has been derived for the XCO2 and XCH4 products, which ensures that the records are traceable to the WMO in situ scale.

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Lampton, M., O. Siegmund und R. Raffanti. „Delay line anodes for microchannel‐plate spectrometers“. Review of Scientific Instruments 58, Nr. 12 (Dezember 1987): 2298–305. http://dx.doi.org/10.1063/1.1139341.

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Makarov, V. A., und T. K. Savosteenko. „Determination of phosphorus mass fraction in steels of plasma atomic emission spectrometry“. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY), Nr. 1 (26.03.2021): 86–90. http://dx.doi.org/10.21122/1683-6065-2021-1-86-90.

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A method for measuring the mass fraction of phosphorus in steels by atomic emission spectrometry with the inductively coupled plasma (AES-ICP) has been developed. Possibilities of atomic emission spectrometers of iCAP series for determination of phosphorus in steels allowing to reduce considerably duration of the analysis and to increase its profitability in comparison with chemical methods of the analysis are investigated. A method of decomposition of steel for the complete transfer of phosphorus into solution is proposed. The possibility of software spectrometers “iTeva” in the analysis by the method of relative concentrations. Calibration of the spectrometer was carried out on aqueous solutions with a known concentration of phosphorus using the method of relative concentrations. For the preparation of calibration solutions, chemically pure salt was used. The analytical line free from spectral overlays is selected. A good correlation of the calibration graph is obtained. The correctness of the determination is confirmed by the analysis of standard samples and comparison with the results of the determination in accordance with the chemical method. The developed technique is used in determining the mass fraction of phosphorus in steels. Validation of the methodology was carried out. iCAP spectrometers can be used to determine the mass fraction of phosphorus in steels.

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Tseng, Ching-Hui, Joseph F. Ford, Charles K. Mann und Thomas J. Vickers. „Wavelength Calibration of a Multichannel Spectrometer“. Applied Spectroscopy 47, Nr. 11 (November 1993): 1808–13. http://dx.doi.org/10.1366/0003702934065948.

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A readily automated procedure for wavelength calibration of multichannel spectrometers is described. Once applied, line positions can be read from the multichannel display with good accuracy and precision for any spectrometer setting. The procedure uses Ne atomic lines as wavelength standards. A novel apodization procedure is used for accurate measurement of the pixel positions of the neon lines. Raman line positions can be determined with an average error of less than 0.2 cm−1.

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Lepère, Muriel. „Line profile study with tunable diode laser spectrometers“. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 60, Nr. 14 (Dezember 2004): 3249–58. http://dx.doi.org/10.1016/j.saa.2003.12.052.

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Genest, Jérôme, und Pierre Tremblay. „Diffraction and line shape of Fourier-transform spectrometers“. Applied Optics 42, Nr. 22 (01.08.2003): 4541. http://dx.doi.org/10.1364/ao.42.004541.

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Hettrick, Michael C. „Grazing incidence echelle spectrometers using varied line-space gratings“. Applied Optics 24, Nr. 9 (01.05.1985): 1251. http://dx.doi.org/10.1364/ao.24.001251.

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Desbiens, Raphaël, Jérôme Genest und Pierre Tremblay. „Radiometry in line-shape modeling of Fourier-transform spectrometers“. Applied Optics 41, Nr. 7 (01.03.2002): 1424. http://dx.doi.org/10.1364/ao.41.001424.

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Pelipasov, O. V., R. A. Lokhtin, V. A. Labusov und N. G. Pelevina. „Analytical capabilities of a «Grand» spectrometer in analysis of solutions using inductively coupled plasma“. Industrial laboratory. Diagnostics of materials 85, Nr. 1II) (15.02.2019): 82–85. http://dx.doi.org/10.26896/1028-6861-2019-85-1-ii-82-85.

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It has been shown that «Grand» spectrometers based on a hybrid assembly of BLPP-2000 photodetector arrays produced by «VMK-Optoélektronika» can be used for atomic emission spectral analysis of solutions using inductively coupled plasma atomic emission spectroscopy (ICP-AES). For the prototype of a «Grand-ICP» spectrometer consisting of «Grand» spectrometer, microwave plasma generator, and RF (radiofrequency) generator, the following analytical characteristics were determined: element detection limit, long-term stability, linear ranges of calibration graphs for several elements, and optimal operating parameters of the microwave generator. The linear concentration range of analyte elements is 105when using a single analytical line of the element. The long-term stability is less than 2% in 6 h without using an internal standard. The detection limits are comparable to those of modern ICP spectrometers with an axial plasma survey and lie in a range of sub-microgram per liter. It has been found that the effect of superposition of the spectral lines of the plasma background, for example, OH molecular lines or others, on the analyte lines can be eliminated by subtracting the blank sample spectrum from the analyte spectrum using Atom software. The analytical characteristics of the spectrometer allow the use of the device both for developing new ICP- based systems and restoring the performance of defective ICP spectrometers.

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Dissertationen zum Thema "Line spectrometers"

Price, Daniel Charles. „Radio astronomy instrumentation for redshifted hydrogen line science“. Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:3185b622-9aba-4c0f-995b-eceb50a5a49c.

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This thesis presents instrumentation with which to measure the abundance of neutral hydrogen gas in the Universe. Measuring where the Universe’s hydrogen is, and tracing how its distribution evolves with time, holds the key to understanding how galaxies evolve, the nature of dark energy, and how the first cosmic structures formed. In particular, this thesis looks at instrumentation for 21-cm intensity mapping telescopes. In 21-cm intensity mapping, the collective emission of many galaxies is measured, without individual detections. This technique promises to allow detection of the baryonic acoustic oscillation peaks in the power spectrum of the Universe’s matter distribution. Such a detection would increase constraints on cosmological parameters. There are two main approaches to designing a 21-cm intensity mapping instruments: using a filled aperture instrument such as a single-dish telescope, or using a sparse aperture instrument such as an interferometric array of dipoles. This thesis investigates analogue components for a sparse aperture instrument operating at 1.0-1.5 GHz. As part of this work, a 16-element sparse aperture array was designed and constructed. To test the array’s performance, field testing was conducted; the results of which are presented here. In addition to this, I have designed a new digital spectrometer for redshifted hydrogen line science, named HISPEC. A copy of this spectrometer has been installed on the Parkes 64 m telescope, as a digital signal processor for the 21-cm multibeam receiver. HISPEC has increased instantaneous bandwidth, higher interchannel isolation, and improved quantization efficiency as compared to the existing backend, MBCORR. The HISPEC equipped multibeam receiver is an ideal instrument for 21-cm intensity mapping at redshifts z<0.2.

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Hochgürtel, Stefan [Verfasser]. „Efficient implementations of high-resolution wideband FFT-spectrometers and their application to an APEX Galactic Center line survey / Stefan Hochgürtel“. Bonn : Universitäts- und Landesbibliothek Bonn, 2013. http://d-nb.info/104497124X/34.

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Pospíchal, David. „Systém pro měření lokálních IR spekter“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442520.

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The diploma thesis deals with the design of a system for measuring infrared spectra from local areas of samples. The theoretical part describes the electromagnetic waves and related phenomena. Furthermore, the semiconductor junction and solar cells are discussed. The following is a basic description of line spectrometers. In the practical part, a suitable arrangement of the whole system, collimator design, and especially the core of the whole work, ie control software and signal processing, are proposed.

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Galhena, Asiri S. „Implementation of an In-line Surface-induced Dissociation Device in a Quadrupole Time-of-flight Instrument and Its Performance“. Diss., The University of Arizona, 2008. http://hdl.handle.net/10150/195832.

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The focus of this dissertation is the introduction of surface-induced dissociation (SID) into a commercially available quadrupole time-of-flight mass spectrometer as an alternative ion fragmentation method. The performance of the SID device was characterized and its applications were demonstrated by dissociating peptides, proteins, inorganic salt clusters and non-covalent protein complexes. The SID setup allowed direct comparison of SID with conventional collision-induced dissociation (CID) on the same instrument, taking advantage of the characteristics of Q-TOF instrumentation, including extended mass range, high sensitivity and resolution. With the SID setup installed, no significant reduction of the ion transmission was evident. SID fragmentation patterns of peptides are, in general, similar to CID, with slight differences in the relative intensities of immonium ions, backbone cleavage b- versus y- type ions, and y- versus y-NH3 ions. This suggests enhanced accessibility to high energy/secondary fragmentation channels with SID. SID studies on cesium iodide clusters (CsI) also revealed that SID deposits more internal energy.The utility of mass spectrometric methods to probe the gas phase cyclization process was studied with [D-Ala2]-Leucine Enkephalin amide. This peptide showed prominent formation of the [M-NH3]+ ion which is believed to be the linear b5 ion with a C-terminal oxazolone structure. Other fragments in the spectra indicate that the linear b5 ion undergoes cyclization, subsequent ring opening and further dissociation to rearranged fragments that cannot be explained by the initial sequence. The similarities between the cyclic and b5-ion from the linear peptide indicated the formation of a heterogeneous ion population and this is further supported by gas-phase H/D exchange experiments. An ion funnel interface to improve ion transmission at high pressures was tested in a custom built quadrupole-surface-quadrupole instrument. The ion transmission efficiency for selected bio-molecules such as YGGFLR, insulin chain-B, ubiquitin and cytochrome c showed to approach almost 90%, with the funnel interface installed. The ion transmission efficiency was effected by several factors including: the size of the analyte, the DC gradient, the RF frequency, and the RF amplitude. The higher fragmentation efficiencies for SID in the presence of the funnel interface indicated higher internal energy deposition for the funnel interface.

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Bell, Christopher Robert. „Multi-lined Interferometric Stellar Oscillation Spectrometer (MISOS)“. Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/46672.

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Dunn, Warwick Brian. „The off-line and on-line analysis of liquid process streams by mass spectrometry“. Thesis, University of Hull, 1996. http://hydra.hull.ac.uk/resources/hull:4651.

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The work presented in this thesis describes the development and validation in the laboratory of four techniques employed for the off-line and on-line analysis of liquid chemical process streams by mass spectrometry, without previous chromatographic separation of sample components. The four techniques were total vaporisation analysis, headspace analysis, membrane introduction mass spectrometry and atmospheric pressure ionisation-mass spectrometry. The technique of total vaporisation analysis completely vaporises liquid samples in a gas chromatograph heated injection inlet and analyses the vapour created with a mass spectrometer. Headspace analysis and membrane introduction mass spectrometry provide partial and selective transfer of compounds from the liquid sample phase to the gas phase and the subsequent analysis of the gas phase with a mass spectrometer. Headspace analysis has no third phase separating the liquid and gas phases whereas membrane introduction mass spectrometry places a membrane between the two phases. All three techniques were validated using an electron-impact quadrupole mass spectrometer and two model streams; acetone (analyte) in water and methyl iodide (analyte) in acetic acid. As an alternative strategy atmospheric pressure ionisation-mass spectrometers ionise samples in ion sources operating at atmospheric pressure. The techniques of electrospray ionisation and atmospheric pressure chemical ionisation were investigated for the analysis of formic, acetic and propionic acids present in water and other carboxylic acids. The techniques of total vaporisation analysis, headspace analysis and membrane introduction mass spectrometry provided low p.g m1' or g 11 limits of detection for acetone and methyl iodide with relative standard deviation values for replicate analyses of 100 pg ml' standards of less than 10 % in most cases. Off-line and on-line total vaporisation analysis and off-line headspace analysis provided accurate determination of acetone in similar process samples, whereas the matrix affected the accuracy of the determination when the techniques of on-line headspace analysis and membrane introduction mass spectrometry were employed. Electrospray ionisation could also detect formic, acetic and propionic acids in aqueous or carboxylic acid matrices at concentrations of and possibly less than 100 tg nil1 . Atmospheric pressure chemical ionisation could only detect carboxylic acids present in aqueous matrices at concentrations of 100 tg ml' or greater.

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Gallavardin, Stéphane. „Analysis concepts of aerosols by on-line aerosol mass spectrometry“. [S.l.] : [s.n.], 2006. http://mediatum2.ub.tum.de/doc/603768/document.pdf.

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Pitts, Leslie John. „On-line systems for automated sample introduction in atomic spectrometry“. Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/1807.

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Offley, Stephen George. „Aspects of flow injection atomic absorption spectrometry“. Thesis, Loughborough University, 1992. https://dspace.lboro.ac.uk/2134/25489.

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The literature relevant to the generation of volatile hydrides for analytical atomic spectroscopy has been reviewed, with particular reference to atomic absorption spectrometry (AAS). This reveals some conflicting information concerning the nature of various interference effects and strategies to overcome them. The use of flow injection (FI) procedures has been demonstrated by several research groups, to be beneficial. A review of the literature concerning the application of FI techniques to AAS shows that there is a sustained interest in the use of such a combination for analytical purposes. In particular, an interest in the on-line coupling of chemical pretreatment of samples is evident. Atomic absorption spectrometry has a limited working range and requires frequent calibration, consequently, there is a need for a rapid, precise on-line dilution procedure. The potential of FI systems with wide bore manifold tubing for on-line dilution was assessed and found to be limited by variations in dispersion coefficient arising from differences in specific gravities between the sample and carrier fluids. This could be overcome only by the use of unrealistically high flow rates. The use of FI procedures for the generation of volatile hydrides of selenium and arsenic was investigated. Optimization studies of system parameters, including the atomization step, were undertaken which demonstrated the benefits in applying FI in hydride generation atomic absorption spectrometry (HGAAS). Analytical methods were devised and evaluated for the determination of Se in copper metal and As in nickel alloy. These procedures involved the use of an on-line matrix removal step in which potentially interfering matrix elements were retained on a strong cation exchange resin (Dowex 50W). The manifold was designed so that the FI value acted as the interface between the matrix isolation stage and the vapour generation stage, a strategy which allowed independent optimization of each stage. Location of the ion exchange resin in the sample loop of a six-port rotary valve allowed the resin to be regenerated easily and rapidly, with a throughput capability of the order of 50 h⁻¹ and permit the proposed full automation of the whole analytical procedure. In the determination of As in nickel alloy a novel stopped-flow pre-reduction step was developed to permit AsIII quantification, therefore, achieve optimum sensitivity. The two systems permitted limits of detection for Se and As of 2.1 and 3.9 ng ml⁻¹ respectively. Direct comparisons were made with existing matrix isolation systems to emphasise the benefits of system design.

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Zettersten, Camilla. „On-line Electrochemistry Electrospray Ionisation Mass Spectrometry : Method Development and Applications“. Doctoral thesis, Uppsala universitet, Analytisk kemi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-99329.

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This thesis deals with studies of on-line electrochemistry electrospray ionisation mass spectrometry (EC/ESI-MS). It is shown that the use of EC/ESI-MS demands optimal coupling characteristics. Pre-concentration and desalting, due to matrix exchange, were demonstrated for the model substance 1-hexanethiol in an EC/ESI-MS setup. The setup was also used for investigations of the oxidation states of the manganese complex [Mn2(bpmp)(µ-OAc)2][ClO4], where bpmp is a 2,6-bis[[N,N-di(2-pyridylmethyl)amino]methyl]-4-methylphenol compound. The manganese complex, which is relevant to artificial photosynthesis, was found to be a good model compound for the EC/ESI-MS studies, thanks to its many oxidation states. For the first time, the presence of the Mn(III,IV) state of the manganese complex was demonstrated in the studies. During the experimental work, the importance of the electrode positioning within the electrochemical cell was investigated. Different EC cell configurations were studied using the manganese complex as a model substance. It was clearly shown that the EC cell design influences the distribution between the peaks in the mass spectra - not only for manganese complexes and Olsalazine but also for 4-chloroaniline. A previously unknown comproportionation reaction was found for 4-chloroaniline involving the oxidised dimer, 4-[(4-chlorophenyl)imino]-2,5-cyclohexadien-1-imine. This reaction explained the unexpected presence of the signal due to the reduced dimer, 4-amino-4'-chlorodiphenylamine, in the mass spectra. Furthermore, it was shown that EC/ESI-MS was successful in conjunction with miniaturised gold wire electrodes in a PDMS chip within which dopamine was oxidised with a conversion efficiency of 30%. The oxidation products of dopamine were detected after 0.6-1.2 seconds for 1.0 and 0.5 µl/min, respectively. The combination of electrochemically controlled solid-phase extraction (EC-SPE) with ESI-MS was found to be less straightforward than detecting anions pre-concentrated on a polypyrrole coated electrode with EC-SPE/ICP-MS. The on-line combination of liquid chromatography with EC/ESI-MS/MS for studying antioxidants in yellow onion extracts was shown to be fast and a relatively easy complement to classical antioxidant activity determinations.

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Bücher zum Thema "Line spectrometers"

Linskens, Hans Ferdinand. Gas Chromatography/Mass Spectrometry. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986.

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Popescu, Crisan. Applications of Mass Spectrometry in Life Safety. Dordrecht: Springer Science + Business Media B.V, 2008.

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Popescu, Crisan, Alina D. Zamfir und Nicolae Dinca, Hrsg. Applications of Mass Spectrometry in Life Safety. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8811-7.

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Mass spectrometry for biotechnology. San Diego, Calif: Academic Press, 1996.

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Cross, John H. Third International Workshop on Ion Mobility Spectrometry: Proceedings of an International Speciality Conference co-sponsored by Lyndon B. Johnson Space Center and KRUG Life Sciences, and held at Galveston, Texas, October 16-19, 1994. Herausgegeben von Lyndon B. Johnson Space Center und International Workshop on Ion Mobility Spectrometry (3rd : 1994 : Galveston, Texas). Houston, Texas: Lyndon B. Johnson Space Center, 1995.

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Gilmor, Christopher Stephen Robertson. In-line color monitoring of polymers during extrusion using a charge coupled device spectrometer. Ottawa: National Library of Canada, 2000.

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Ziara, K. S. Stability and atomic line studies of a Dc arc for low resolution atomic emission spectrometry. Manchester: UMIST, 1994.

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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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service), SpringerLink (Online, Hrsg. Capillary Electrophoresis of Carbohydrates: From Monosaccharides to Complex Polysaccharides. Totowa, NJ: Springer Science+Business Media, LLC, 2011.

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West, Heather. The on-line characterization of hydrocarbon species in engine exhaust gases using a mass spectrometer, with applications to the reduction of harmful hydrocarbon species by fuel reformation. Birmingham: University of Birmingham, 1993.

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Buchteile zum Thema "Line spectrometers"

Rozanova, Svitlana, Katalin Barkovits, Miroslav Nikolov, Carla Schmidt, Henning Urlaub und Katrin Marcus. „Quantitative Mass Spectrometry-Based Proteomics: An Overview“. In Methods in Molecular Biology, 85–116. New York, NY: Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-1024-4_8.

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AbstractIn recent decades, mass spectrometry has moved more than ever before into the front line of protein-centered research. After being established at the qualitative level, the more challenging question of quantification of proteins and peptides using mass spectrometry has become a focus for further development. In this chapter, we discuss and review actual strategies and problems of the methods for the quantitative analysis of peptides, proteins, and finally proteomes by mass spectrometry. The common themes, the differences, and the potential pitfalls of the main approaches are presented in order to provide a survey of the emerging field of quantitative, mass spectrometry-based proteomics.

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Cooper, Scott, und Anton Sanderfoot. „Mass Spectrometry Approaches“. In Molecular Life Sciences, 655–58. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4614-1531-2_4.

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Cooper, Scott, und Anton Sanderfoot. „Mass Spectrometry Approaches“. In Molecular Life Sciences, 1–5. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4614-6436-5_4-3.

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Kaltashov, Igor A., und Cedric E. Bobst. „Mass Spectrometry“. In Molecular Biophysics for the Life Sciences, 215–56. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-8548-3_7.

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Crespo, Elena, Marco M. L. Steeghs, Simona M. Cristescu und Frans J. M. Harren. „Proton Transfer Reaction Mass Spectrometry: Applications in the Life Sciences“. In Mass Spectrometry Handbook, 1257–81. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118180730.ch52.

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Colligiani, A., und G. Romanenghi. „A Mosfet Transmission-Line High-Power ENDOR Spectrometer“. In 25th Congress Ampere on Magnetic Resonance and Related Phenomena, 460. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76072-3_239.

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Scott, R. P. W., C. G. Scott, M. Munroe und J. Hess. „An On-Line Liquid Chromatograph-Mass Spectrometer System“. In Ciba Foundation Symposium 26 - The Poisoned Patient: The Role of the Laboratory, 155–69. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720080.ch10.

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Sandmeier, E. P., J. Keller, E. Heinzle, I. J. Dunn und J. R. Bourne. „Development of an On-Line Pyrolysis Mass Spectrometry System for the On-Line Analysis of Fermentations“. In Mass Spectrometry in Biotechnological Process Analysis and Control, 209–15. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4757-0169-2_16.

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Beauchamp, Jonathan, und Erika Zardin. „Odorant Detection by On-line Chemical Ionization Mass Spectrometry“. In Springer Handbook of Odor, 49–50. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-26932-0_18.

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Van Emon, Jeanette M., und Viorica Lopez-Avila. „Immunoaffinity Extraction with On-Line Liquid Chromatography—Mass Spectrometry“. In ACS Symposium Series, 74–88. Washington, DC: American Chemical Society, 1996. http://dx.doi.org/10.1021/bk-1996-0646.ch008.

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Konferenzberichte zum Thema "Line spectrometers"

O'Brient, R., J. J. Bock, C. M. Bradford, A. Crites, R. Duan, S. Hailey-Dunsheath, J. Hunacek et al. „Lithographed spectrometers for tomographic line mapping of the Epoch of Reionization“. In SPIE Astronomical Telescopes + Instrumentation, herausgegeben von Wayne S. Holland und Jonas Zmuidzinas. SPIE, 2014. http://dx.doi.org/10.1117/12.2057319.

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Challis, R. E. „Ultrasonic Spectrometers for On-Line Monitoring of Colloid and Emulsion Processes“. In QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2004. http://dx.doi.org/10.1063/1.1711793.

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Gao, Bo-Cai, und Curtiss O. Davis. „Development of a line-by-line-based atmosphere removal algorithm for airborne and spaceborne imaging spectrometers“. In Optical Science, Engineering and Instrumentation '97, herausgegeben von Michael R. Descour und Sylvia S. Shen. SPIE, 1997. http://dx.doi.org/10.1117/12.283822.

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Desbiens, Raphaël, Pierre Tremblay und Jérôme Genest. „Instrument Line Shape of Fourier-Transform Spectrometers: Fast Integration and Correction Algorithms“. In Fourier Transform Spectroscopy. Washington, D.C.: OSA, 2005. http://dx.doi.org/10.1364/fts.2005.ftua3.

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Smith, Clinton J., Amir Khan, Mark A. Zondlo und Gerard Wysocki. „In-Line Reference Cell for Real-Time Calibration of Laser Absorption Spectrometers“. In CLEO: Science and Innovations. Washington, D.C.: OSA, 2012. http://dx.doi.org/10.1364/cleo_si.2012.cw3b.1.

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Watchorn, S., J. Noto, J. Anderson und C. E. Sioris. „Single- and dual-wavelength monolithic spatial heterodyne spectrometers for Fraunhofer line discrimination spectroscopy“. In SPIE Optical Engineering + Applications, herausgegeben von Sylvia S. Shen und Paul E. Lewis. SPIE, 2009. http://dx.doi.org/10.1117/12.825369.

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Veličković, Suzana, und Xianglei Kong. „„Superalkali” clusters, production, potential application like energy storage materials“. In 8th International Conference on Renewable Electrical Power Sources. SMEITS, 2020. http://dx.doi.org/10.24094/mkoiee.020.8.1.15.

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One of the major developments of the past century was the recognition of clusters as building blocks of new materials. “Superalkali” clusters because of their ionization energies which lower than alkaline atoms, present the excellent reducing agents; hence, they are recognized as good can-didates for the synthesis of unusually compounds. “Superalkalis”, plays an important role in the chemistry and material science because of their potential to serve as structural units for the assem-bly of novel nanostructured functional materials, such as nonlinear optical materials, hydrogen storage materials, as well as an excellent reduction reagent for decreasing emissions of carbon dioxide, nitrogen oxides, and molecular nitrogen. One way to get a cluster is to use unconventional methods. To date, the mass spectrometry has proven itself a crucial method, which has no alterna-tive, in the field of the production “superalkali” clusters. However, in order to obtain these clus-ters, it is necessary to make modifications of the mass spectrometers available on the market. With-in this paper, the possibilities of obtaining “superalkali” clusters by combining two classical meth-ods of mass spectrometry such as, Knudsen cell and the surface ionization within a magnetic mass spectrometer will be presented. The modified classic surface ionization mass spectrometry has con-firmed to be an efficient and inexpensive method for obtaining these clusters.

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Nugent, Paul W., Joseph A. Shaw, Michael Kehoe, Casey Smith, Thomas Moon und Rand Swanson. „Measuring the modulation transfer function of imaging spectrometers at infinite focus with roof-line images“. In Photonic Devices + Applications, herausgegeben von Sylvia S. Shen und Paul E. Lewis. SPIE, 2007. http://dx.doi.org/10.1117/12.735011.

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Lou, Mengqi, Wenqian Li, Feng Xie, Jianzhu Cao, Liqiang Wei, Jiejuan Tong und Jiaji Kong. „Design of the Sampling Measurement and Radiochemistry Lab in the Nuclear Island of HTR-PM“. In 2018 26th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icone26-81701.

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Radiation monitoring system is very important to the safe operation of the nuclear power plant. The radiation monitor, including the on-line type and the off-line type, can provide the radioactive level for a given system, certain areas, or unique substance promptly. However, as a supplementary method, the sampling measurement can supply more accurate information about the source term. In this paper, we present the design of the sampling measurement in the nuclear island of HTR-PM. The sampling measurement contains the helium sampling from the primary coolant, the radioactive dust sampling from the primary loop, the liquid sampling from the tritiated water and some process systems, the gas sampling from certain areas, etc. The frequency of the sampling measurement depends on regulatory requirements and actual operational demands. The control values of the samples are settled on the basis of the source term analysis and regulatory requirements. The radiochemistry lab has been designed to meet the requirement of the sampling measurement, in which the main instruments include a NaI γ spectrometer, two high-purity germanium γ spectrometers, a four-channel ultralow background α/β analyzer, and a low background liquid scintillation counter. The characteristics of these instruments will be described in details in the paper.

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Bowyer, C. Stuart. „Unique variable line-space spectrometers on the EUVE satellite: in-flight performance and selected scientific results“. In SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, herausgegeben von Silvano Fineschi. SPIE, 1995. http://dx.doi.org/10.1117/12.224927.

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Berichte der Organisationen zum Thema "Line spectrometers"

Neville, R. A., L. Sun und K. Staenz. Detection of Spectral Line Curvature in Imaging Spectrometer Data. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2003. http://dx.doi.org/10.4095/219993.

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Yan, C., R. Carlini und D. Neuffer. Beam energy measurement using the ARC beam line as a spectrometer. Office of Scientific and Technical Information (OSTI), Juni 1993. http://dx.doi.org/10.2172/10160915.

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McCarty, II, D. L. An inductively coupled plasma spectrometer for on-line, real-time process gas analysis. Office of Scientific and Technical Information (OSTI), Januar 1988. http://dx.doi.org/10.2172/6085639.

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Howard, Stephen L., Joyce E. Newberry, Rosario C. Sausa und Andrzej W. Miziolek. Triple Quadrupole Mass Spectrometry Diagnostics of Propellant-Like Flames. Fort Belvoir, VA: Defense Technical Information Center, Juni 1992. http://dx.doi.org/10.21236/ada251484.

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Carpenter, D., M. Ratcliff und D. Dayton. Catalytic Steam Reforming of Gasifier Tars: On-Line Monitoring of Tars with a Transportable Molecular-Beam Mass Spectrometer; Milestone Completion Report. Office of Scientific and Technical Information (OSTI), Mai 2002. http://dx.doi.org/10.2172/15000383.

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Smith, B. A practical laser induced breakdown spectrometer for real time on- line monitoring of aqueous process streams. Final report, August 13, 1996--March 6, 1997. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/10201398.

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Cheng, M. D. On-Line Measurements of Beryllium, Chromium, and Mercury by Using Aerosol Beam Focused Laser-Induced Plasma Spectrometer and Time-Integrated Filter Sampling Reference Method. Office of Scientific and Technical Information (OSTI), Mai 2003. http://dx.doi.org/10.2172/814217.

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Cheng, M. D., und R. W. Vannice. On-Line Measurement of Beryllium, Chromium, and Mercury by Using Aerosol Beam Focused Laser-Induced Plasma Spectrometer and TIme-Integrated Filter Sampling and Reference Method. Office of Scientific and Technical Information (OSTI), Mai 2003. http://dx.doi.org/10.2172/940543.

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Brochu, F., E. Cooke, M. Romanchikova, J. Bunch, A. Dexter, R. Steven, S. Thomas et al. Federation of imaging data for life sciences current status of metadata collection for high content screening, mass spectrometry imaging and light sheet microscopy of AstraZeneca, GlaxoSmithKline and NPL. National Physical Laboratory, September 2020. http://dx.doi.org/10.47120/npl.mn24.

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Brochu, F., E. Cooke, m. Romanchikova, J. Bunch, A. Dexter, R. Steven, S. Thomas et al. Federation of imaging data for life sciences current status of metadata collection for high content screening, mass spectrometry imaging and light sheet microscopy of AstraZeneca, GlaxoSmithKline and NPL. National Physical Laboratory, September 2020. http://dx.doi.org/10.47120/npl.ms24.

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