Bibliografie tematiche / Time and frequency transfer

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Letteratura scientifica selezionata sul tema "Time and frequency transfer"

Autore: Grafiati

Pubblicato: 25 gennaio 2025

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Articoli di riviste sul tema "Time and frequency transfer"

Jaekel, Marc-Thierry, e Serge Reynaud. "Time-Frequency Transfer with Quantum Fields". Physical Review Letters 76, n. 14 (1 aprile 1996): 2407–11. http://dx.doi.org/10.1103/physrevlett.76.2407.

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Huang, Min-Chih, e Cheng-Han Tsai. "Pressure transfer function in time and time-frequency domains". Ocean Engineering 35, n. 11-12 (agosto 2008): 1203–10. http://dx.doi.org/10.1016/j.oceaneng.2008.04.005.

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Bourgoin, A., M. Zannoni, L. Gomez Casajus, P. Tortora e P. Teyssandier. "Relativistic modeling of atmospheric occultations with time transfer functions". Astronomy & Astrophysics 648 (aprile 2021): A46. http://dx.doi.org/10.1051/0004-6361/202040269.

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Context. Occultation experiments represent unique opportunities to remotely probe the physical properties of atmospheres. The data processing involved in modeling the time and frequency transfers of an electromagnetic signal requires that refractivity be properly accounted for. On theoretical grounds, little work has been done concerning the elaboration of a covariant approach for modeling occultation data. Aims. We present an original method allowing fully analytical expressions to be derived up to the appropriate order for the covariant description of time and frequency transfers during an atmospheric occultation experiment. Methods. We make use of two independent powerful relativistic theoretical tools, namely the optical metric and the time transfer functions formalism. The former allows us to consider refractivity as spacetime curvature while the latter is used to determine the time and frequency transfers occurring in a curved spacetime. Results. We provide the integral form of the time transfer function up to any post-Minkowskian order. The discussion focuses on the stationary optical metric describing an occultation by a steadily rotating and spherically symmetric atmosphere. Explicit analytical expressions for the time and frequency transfers are provided at the first post-Minkowskian order and their accuracy is assessed by comparing them to results of a numerical integration of the equations for optical rays. Conclusions. The method accurately describes vertical temperature gradients and properly accounts for the light-dragging effect due to the motion of the optical medium. It can be pushed further in order to derive the explicit form of the time transfer function at higher order and beyond the spherical symmetry assumption.

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Raupach, Sebastian M. F., e Gesine Grosche. "Chirped frequency transfer: a tool for synchronization and time transfer". IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 61, n. 6 (giugno 2014): 920–29. http://dx.doi.org/10.1109/tuffc.2014.2988.

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Skoda, Pavel, e Emilie Camisard. "Time and frequency transfer over optical networks". Proceedings of the Asia-Pacific Advanced Network 35 (10 giugno 2013): 20. http://dx.doi.org/10.7125/apan.35.3.

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Śliwczyński, Łukasz, Przemysław Krehlik e Marcin Lipiński. "Optical fibers in time and frequency transfer". Measurement Science and Technology 21, n. 7 (20 maggio 2010): 075302. http://dx.doi.org/10.1088/0957-0233/21/7/075302.

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Rickard, Mark A., Andrei V. Pakoulev, Nathan A. Mathew, Kathryn M. Kornau e John C. Wright. "Frequency- and Time-Resolved Coherence Transfer Spectroscopy". Journal of Physical Chemistry A 111, n. 7 (febbraio 2007): 1163–66. http://dx.doi.org/10.1021/jp0677804.

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Zhang, Zhehao, e Lin Pan. "Galileo Time Transfer with Five-Frequency Uncombined PPP: A Posteriori Weighting, Inter-Frequency Bias, Precise Products and Multi-Frequency Contribution". Remote Sensing 14, n. 11 (26 maggio 2022): 2538. http://dx.doi.org/10.3390/rs14112538.

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Galileo satellites can broadcast signals on five frequencies, namely E1, E5A, E5B, E5 (A+B), and E6. The multi-frequency integration has become an emerging trend in Global Navigation Satellite System (GNSS) data processing. This study focused on the precise time transfer based on Galileo five-frequency uncombined precise point positioning (PPP), including the performance comparison of PPP time transfer with a priori and a posteriori weighting strategies, with different inter-frequency bias (IFB) dynamic models, and with the precise satellite products from different analysis centers, as well as the contribution of multi-frequency observations for time transfer. Compared with the a priori weighting strategy, the short-term frequency stability of time transfer adopting the Helmert variance component estimation method can be improved by 28.9–37.6% when the average time is shorter than 100 s. The effect of IFB dynamic models on Galileo five-frequency PPP time transfer is not obvious. When employing the post-processed precise satellite products from seven analysis centers, the accuracy of time transfer can be better than 0.1 ns, while an accuracy of 0.253 ns can be obtained in the real-time mode. At an average time of approximately 10,000 s, the post-processed time transfer with Galileo five-frequency PPP can provide a frequency stability of 3.283 × 10−14 to 3.459 × 10−14, while that in real-time mode can be 3.541 × 10−14. Compared with dual-frequency PPP results, the contribution of multi-frequency combination to the accuracy and frequency stability of time transfer is not significant, but multi-frequency PPP can achieve more reliable time transfer results when the signal quality is poor.

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Ge, Yulong, Xinyun Cao, Fei Shen, Xuhai Yang e Shengli Wang. "BDS-3/Galileo Time and Frequency Transfer with Quad-Frequency Precise Point Positioning". Remote Sensing 13, n. 14 (9 luglio 2021): 2704. http://dx.doi.org/10.3390/rs13142704.

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In this work, quad-frequency precise point positioning (PPP) time and frequency transfer methods using Galileo E1/E5a/E5b/E5 and BDS-3 B1I/B3I/B1C/B2a observations were proposed with corresponding mathematical models. In addition, the traditional dual-frequency (BDS-3 B1I/B3I and Galileo E1/E5a) ionospheric-free (IF) model was also described and tested for comparison. To assess the proposed method for time transfer, datasets selected from timing labs were utilized and tested. Moreover, the number of Galileo or BDS-3 satellites, pseudorange residuals, positioning accuracy and tropospheric delay at receiver end were all analyzed. The results showed that the proposed quad-frequency BDS-3 or Galileo PPP models could be used to time transfer, due to stability and accuracy identical to that of dual-frequency IF model. Furthermore, the quad-frequency models can provide potential for enhancing the reliability and redundancy compared to the dual-frequency time transfer method.

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Levine, Judah. "A review of time and frequency transfer methods". Metrologia 45, n. 6 (dicembre 2008): S162—S174. http://dx.doi.org/10.1088/0026-1394/45/6/s22.

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Tesi sul tema "Time and frequency transfer"

Ilvedson, Corinne Rachel 1974. "Transfer function estimation using time-frequency analysis". Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50472.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1998.
Includes bibliographical references (p. 135-136).
Given limited and noisy data, identifying the transfer function of a complex aerospace system may prove difficult. In order to obtain a clean transfer function estimate despite noisy data, a time-frequency analysis approach to system identification has been developed. The method is based on the observation that for a linear system, an input at a given frequency should result in a response at the same frequency, and a time localized frequency input should result in a response that is nearby in time to the input. Using these principles, the noise in the response can be separated from the physical dynamics. In addition, the impulse response of the system can be restricted to be causal and of limited duration, thereby reducing the number of degrees of freedom in the estimation problem. The estimation method consists of finding a rough estimate of the impulse response from the sampled input and output data. The impulse response estimate is then transformed to a two dimensional time-frequency mapping. The mapping provides a clear graphical method for distinguishing the noise from the system dynamics. The information believed to correspond to noise is discarded and a cleaner estimate of the impulse response is obtained from the remaining information. The new impulse response estimate is then used to obtain the transfer function estimate. The results indicate that the time-frequency transfer function estimation method can provide estimates that are often less noisy than those obtained from other methods such as the Empirical Transfer Function Estimate and Welch's Averaged Periodogram Method.
by Corinne Rachel Ilvedson.
S.M.

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HUANG, WEI. "Improved PPP for time and frequency transfer and real-time detection of GNSS satellite clock frequency anomalies". Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2842527.

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McCune, Robert E. "Identification of Continuous-Time and Discrete-Time Transfer Function Models from Frequency Response Measurements". Ohio University / OhioLINK, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1239731009.

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Mohieldin, Ahmed Nader. "High performance continuous-time filters for information transfer systems". Texas A&M University, 2003. http://hdl.handle.net/1969/233.

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Babendreier, Justin Eric. "Near aggregation: a time and frequency domain analysis using state trajectories and transfer function residues". Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/91080.

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In this thesis we investigate concepts associated with aggregation. The basic idea of aggregation is that there exists a reduced order model such that, for an appropriate initial condition, the trajectories of the reduced-order model are linear combinations of the trajectories of the ful 1-order model. We study systems which do not aggregate exactly, but which "nearly aggregate". It is shown that for "nearly aggregable" systems there exists a reduced-order model such that, for an appropriate initial condition, the trajectories of the reduced-order model are near a linear combination of the trajectories of the full-order model. Under certain conditions it has also been shown that near-aggregation is equivalent to near-unobservability (roughly, an invariant subspace close to the null space of C). Here we establish a relationship between near-unobservability and modal measures of observability as suggested by Selective Modal Analysis. With this result we then obtain an upper bound on the norm of the transfer function residue using near-unobservability measures. The Generalized Hessenberg Representation (GHR) and Dual GHR are examined throughout this analysis. It is finally shown that for SISO systems, the residue norm may be expressed in terms of certain parameters of the Dual GHR.
M.S.

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Bartůšek, Jan. "Time Frequency Analysis of ERP Signals". Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2007. http://www.nusl.cz/ntk/nusl-412769.

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Tato práce se zabývá vylepšením algoritmu pro sdružování (clustering) ERP signálů pomocí analýzy časových a prostorových vlastností pseudo-signálů získaných za pomocí metody analýzy nezávislých komponent (Independent Component Analysis). Naším zájmem je nalezení nových vlastností, které by zlepšily stávající výsledky. Tato práce se zabývá použitím Fourierovy transformace (Fourier Transform), FIR filtru a krátkodobé Fourierovy transformace ke zkvalitnění informace pro sdružovací algoritmy. Princip a použitelnost metody jsou popsány a demonstrovány ukázkovým algoritmem. Výsledky ukázaly, že pomocí dané metody je možné získat ze vstupních dat zajímavé informace, které mohou být úspěšně použity ke zlepšení výsledků.

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Yang, Taeyoung. "Fundamental Limits on Antenna Size for Frequency and Time Domain Applications". Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/39334.

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As ubiquitous wireless communication becomes part of life, the demand on antenna miniaturization and interference reduction becomes more extreme. However, antenna size and performance are limited by radiation physics, not technology. In order to understand antenna radiation and energy storage mechanisms, classical and alternative viewpoints of radiation are discussed. Unlike the common sense of classical antenna radiation, it is shown that the entire antenna fields contribute to both radiation and energy storage with varying total energy velocity during the radiation process. These observations were obtained through investigating impedance, power, the Poynting vector, and energy velocity of a radiating antenna. Antenna transfer functions were investigated to understand the real-world challenges in antenna design and overall performance. An extended model, using both the singularity expansion method and spherical mode decomposition, is introduced to analyze the characteristics of various antenna types including resonant, frequency-independent, and ultra-wideband antennas. It is shown that the extended model is useful to understand real-world antennas. Observations from antenna radiation physics and transfer function modeling lead to both corrections and extension of the classical fundamental-limit theory on antenna size. Both field and circuit viewpoints of the corrected limit theory are presented. The corrected theory is extended for multi-mode excitation cases and also for ultra-wideband and frequency-independent antennas. Further investigation on the fundamental-limit theory provides new innovations, including a low-Q antenna design approach that reduces antenna interference issues and a generalized approach for designing an antenna close to the theoretical-size limit. Design examples applying these new approaches with simulations and measurements are presented. The extended limit theory and developed antenna design approaches will find many applications to optimize compact antenna solutions with reduced near-field interactions.
Ph. D.

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Hon, Tsz Kin. "Time-frequency analysis and filtering based on the short-time Fourier transform". Thesis, King's College London (University of London), 2013. https://kclpure.kcl.ac.uk/portal/en/theses/timefrequency-analysis-and-filtering-based-on-the-shorttime-fourier-transform(de8bcca8-cd9d-42a3-bf79-281672478744).html.

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The joint time-frequency (TF) domain provides a convenient platform for signal analysis by involving the dimension of time in the frequency representation of a signal. A straightforward way to acquire localized knowledge about the frequency content of the signal at different times is to perform the Fourier transform over short-time intervals rather than processing the whole signal at once. The resulting TF representation is the short-time Fourier transform (STFT), which remains to date the most widely used method for the analysis of signals whose spectral content varies with time. Recent application examples of the STFT and its variants – e.g. the squared magnitude of the STFT known as the spectrogram – include signal denoising, instantaneous frequency estimation, and speech recognition. In this thesis, we first address the main limitation of the trade-off between time and frequency resolution for the TF analysis by proposing a novel adaptation procedure which properly adjusts the size of the analysis window over time. Our proposed approach achieves a high resolution TF representation, and can compare favorably with alternative time-adaptive spectrograms as well as with advanced quadratic representations. Second, we propose a new scheme for the time-frequency adaptation of the STFT in order to automatically determine the size and the phase of the analysis window at each time and frequency instant. This way, we can further improve the resolution of the conventional as well as the time-adaptive spectrograms. Finally, we focus on denoising non-stationary signals in the STFT domain. We introduced an optimized TF mask in the STFT domain, which is based on the concept of the multi-window spectrogram. Experimentation has shown that the introduced approach can effectively recover distorted signals based on a small set of representative examples of the noisy observation and the desired signal.

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Capus, Chris G. "Time-frequency methods based on the fractional fourier transform". Thesis, Heriot-Watt University, 2002. http://hdl.handle.net/10399/1194.

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Sucic, Victor. "Parameters selection for optimising time-frequency distributions and measurements of time-frequency characteristics of nonstationary signals". Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/15834/1/Victor_Sucic_Thesis.pdf.

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The quadratic class of time-frequency distributions (TFDs) forms a set of tools which allow to effectively extract important information from a nonstationary signal. To determine which TFD best represents the given signal, it is a common practice to visually compare different TFDs' time-frequency plots, and select as best the TFD with the most appealing plot. This visual comparison is not only subjective, but also difficult and unreliable especially when signal components are closely-spaced in the time-frequency plane. To objectively compare TFDs, a quantitative performance measure should be used. Several measures of concentration/complexity have been proposed in the literature. However, those measures by being derived with certain theoretical assumptions about TFDs are generally not suitable for the TFD selection problem encountered in practical applications. The non-existence of practically-valuable measures for TFDs' resolution comparison, and hence the non-existence of methodologies for the signal optimal TFD selection, has significantly limited the use of time-frequency tools in practice. In this thesis, by extending and complementing the concept of spectral resolution to the case of nonstationary signals, and by redefining the set of TFDs' properties desirable for practical applications, we define an objective measure to quantify the quality of TFDs. This local measure of TFDs' resolution performance combines all important signal time-varying parameters, along with TFDs' characteristics that influence their resolution. Methodologies for automatically selecting a TFD which best suits a given signal, including real-life signals, are also developed. The optimisation of the resolution performances of TFDs, by modifying their kernel filter parameters to enhance the TFDs' resolution capabilities, is an important prerequisite in satisfying any additional application-specific requirements by the TFDs. The resolution performance measure and the accompanying TFDs' comparison criteria allow to improve procedures for designing high-resolution quadratic TFDs for practical time-frequency analysis. The separable kernel TFDs, designed in this way, are shown to best resolve closely-spaced components for various classes of synthetic and real-life signals that we have analysed.

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Libri sul tema "Time and frequency transfer"

Xiu, Liming, a cura di. From Frequency to Time-Average-Frequency. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119102175.

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Tolimieri, Richard. Time-frequency representations. Boston: Birkhauser Boston, 1997.

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Hlawatsch, Franz, e Franois Auger, a cura di. Time-Frequency Analysis. London, UK: ISTE, 2008. http://dx.doi.org/10.1002/9780470611203.

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Tolimieri, Richard, e Myoung An. Time-Frequency Representations. Boston, MA: Birkhäuser Boston, 1996. http://dx.doi.org/10.1007/978-1-4612-4152-2.

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Tolimieri, Richard. Time-Frequency Representations. Boston, MA: Birkhäuser Boston, 1996.

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Cohen, Leon. Time-frequency analysis. Englewood Cliffs, N.J: Prentice Hall PTR, 1995.

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James, Jespersen, e Hanson D. W, a cura di. Time and frequency. New York: Institute of Electrical and Electronics Engineers, 1991.

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Flandrin, Patrick. Time-frequency/time scale analysis. San Diego: Academic Press, 1999.

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Riley, Michael D. Speech Time-Frequency Representations. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1079-2.

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D, Riley Michael. Speech time-frequency representations. Boston (Mass.): Kluwer Academic, 1988.

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Capitoli di libri sul tema "Time and frequency transfer"

Defraigne, Pascale. "GNSS Time and Frequency Transfer". In Springer Handbook of Global Navigation Satellite Systems, 1187–206. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42928-1_41.

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Banerjee, Parameswar, e Demetrios Matsakis. "Optical Time and Frequency Transfer". In An Introduction to Modern Timekeeping and Time Transfer, 239–48. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30780-5_12.

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Banerjee, Parameswar, e Demetrios Matsakis. "Time and Frequency Measurements". In An Introduction to Modern Timekeeping and Time Transfer, 109–25. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30780-5_5.

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Banerjee, Parameswar, e Demetrios Matsakis. "Frequency Stability". In An Introduction to Modern Timekeeping and Time Transfer, 79–108. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30780-5_4.

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Jonscher, A. K. "Surface Transport in Time and Frequency Domains". In Energy Transfer Dynamics, 112–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71867-0_12.

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Tolimieri, Richard, e Myoung An. "Zak transform". In Time-Frequency Representations, 57–75. Boston, MA: Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_5.

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Lin, Huang-Tien. "Precise Time and Frequency Transfer: Techniques". In Handbook of Metrology and Applications, 1–26. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1550-5_24-1.

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Lin, Huang-Tien. "Precise Time and Frequency Transfer: Techniques". In Handbook of Metrology and Applications, 529–54. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2074-7_24.

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Tolimieri, Richard, e Myoung An. "Fourier transform over A". In Time-Frequency Representations, 25–46. Boston, MA: Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_3.

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Tolimieri, Richard, e Myoung An. "Zak transform and W-H systems". In Time-Frequency Representations, 93–116. Boston, MA: Birkhäuser Boston, 1998. http://dx.doi.org/10.1007/978-1-4612-4152-2_7.

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Atti di convegni sul tema "Time and frequency transfer"

Śliwczyński, Łukasz, Przemyslaw Krehlik, Łukasz Buczek, Harald Schnatz, Jochen Kronjäger, Krzysztof Turza e Artur Binczewski. "Experimental Investigation of Interoperability in Optical Frequency Transfer". In 2024 European Frequency and Time Forum (EFTF), 51–53. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722370.

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Wang, Weixiong, Dong Guo, Chongxia Zhong, Zhe Gao, Xiang Wang, Wenjun Wu e Shaowu Dong. "Absolute Calibration of GPS Time Transfer System at NTSC". In 2024 European Frequency and Time Forum (EFTF), 64–66. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722761.

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Wang, Zhaohui, Jiameng Dong, Ge Li, Guoqing Sun, Song Yu e Bin Luo. "Fiber-Optic Time Transfer System Based on Self-Developed Components". In 2024 European Frequency and Time Forum (EFTF), 298–99. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722345.

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Zhao, Baodong, Hao Gao, Zhuoze Zhao, Yapeng Liu, Song Yu e Bin Luo. "Simulation of the Effect of Modulation Depth on Fiber Frequency Transfer". In 2024 European Frequency and Time Forum (EFTF), 286–87. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722259.

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Liu, Qingwei, Zhaohui Wang, Jiameng Dong, Jiahui Cheng, Song Yu e Bin Luo. "Modeling of Phase-Modulated Two-Way Time Transfer Fiber-Optic Links". In 2024 European Frequency and Time Forum (EFTF), 88–89. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722495.

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Fu, Yang, Xiaoming Zhang, Xinyi Chen, Hanxu Wu, Weinan Zhao, Haonan Li, Honglei Yang, Shengkang Zhang e Jun Ge. "Data Processing Optimization and System Characterization of Frequency Comb-Based Time and Frequency Transfer". In 2024 European Frequency and Time Forum (EFTF), 58–60. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722484.

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Yu, Dongrui, Yufei Zhang, Ziyang Chen e Hong Guo. "A Simplified Model of Phase Evolution in Comb-based Time-frequency Transfer". In 2024 European Frequency and Time Forum (EFTF), 98–100. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722192.

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Liu, Bo, Xinxing Guo, Xiang Zhang, Jiang Chen, Yucan Zhang, Tao Liu, Ruifang Dong e Shougang Zhang. "A Link Noise Clean-Up System Based on Fiber Optical Time Transfer". In 2024 European Frequency and Time Forum (EFTF), 42–45. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722092.

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Guo, Xinxing, Bo Liu, Jiang Chen, Shaoshao Yu, Yucan Zhang, Tao Liu, Ruifang Dong e Shougang Zhang. "Time Transfer Through Optical Fiber over 166km on Two Telecommunication Network Fibers". In 2024 European Frequency and Time Forum (EFTF), 38–41. IEEE, 2024. http://dx.doi.org/10.1109/eftf61992.2024.10722574.

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Rieck, Carsten, Rudiger Haas, Per Jarlemark e Kenneth Jaldehag. "VLBI frequency transfer using CONT11". In 2012 European Frequency and Time Forum (EFTF). IEEE, 2012. http://dx.doi.org/10.1109/eftf.2012.6502358.

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Rapporti di organizzazioni sul tema "Time and frequency transfer"

Lu, Chao. Simulation of Quantum Time-Frequency Transform Algorithms. Fort Belvoir, VA: Defense Technical Information Center, giugno 2005. http://dx.doi.org/10.21236/ada435027.

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Ueng, Neng-Tsann, e Louis L. Scharf. The Gamma Transform: A Local Time-Frequency Analysis Method. Fort Belvoir, VA: Defense Technical Information Center, luglio 1996. http://dx.doi.org/10.21236/ada312353.

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Shestakov, Aleksei I. Filter frequency response of time dependent signal using Laplace transform. Office of Scientific and Technical Information (OSTI), gennaio 2018. http://dx.doi.org/10.2172/1418944.

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Moores, Lee C., P. U. Ashvin, I. Fernando e Garret W. George. Synthesis of 2-Methoxypropyl Benzene for Epitope Imprinting. U.S. Army Engineer Research and Development Center, luglio 2022. http://dx.doi.org/10.21079/11681/44883.

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Abstract (sommario):

Harmful algal blooms (HABs) are occurring with increasing frequency and severity across the globe in part due to climate change and anthropogenic pollution (Bullerjahn et al. 2016). HABs produce several classes of toxins; however, microcystins (MCs) are the most commonly studied (Lone et al. 2015) and can be potent toxins with LD50s in the range of 50 μg/kg (Puddick et al. 2014). Sample analysis in laboratories, typically by high-pressure liquid chromatography tandem mass spectrometry (HPLC-MS/MS) or by Enzyme Linked Immunosorbent Assays (ELISAs) (USEPA 2015). These analytical techniques are highly sensitive and selective for the given toxins; however, the time it takes to collect, transfer, prepare, and analyze a sample before the data can be reported is significant; often, multiple days is the most expeditious.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, gennaio 2014. http://dx.doi.org/10.6028/nist.ir.7980-01.

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Potts, Petrina C. NIST Time and Frequency Bulletin. National Institute of Standards and Technology, febbraio 2014. http://dx.doi.org/10.6028/nist.ir.7980-02.

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Potts, Petrina C. NIST Time and Frequency Bulletin. National Institute of Standards and Technology, aprile 2014. http://dx.doi.org/10.6028/nist.ir.7980-03.

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Potts, Petrina C. NIST Time and Frequency Bulletin. National Institute of Standards and Technology, aprile 2014. http://dx.doi.org/10.6028/nist.ir.7980-04.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, maggio 2014. http://dx.doi.org/10.6028/nist.ir.7980-05.

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Potts, Petrina C. NIST time and frequency bulletin. National Institute of Standards and Technology, giugno 2014. http://dx.doi.org/10.6028/nist.ir.7980-06.

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