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Journal articles on the topic 'Rapid lifetime determination (RLD)'

Author: Grafiati

Published: 5 September 2021

Last updated: 29 July 2025

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1

Silva, Susana F., José Paulo Domingues, and António Miguel Morgado. "Accurate Rapid Lifetime Determination on Time-Gated FLIM Microscopy with Optical Sectioning." Journal of Healthcare Engineering 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/1371386.

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Time-gated fluorescence lifetime imaging microscopy (FLIM) is a powerful technique to assess the biochemistry of cells and tissues. When applied to living thick samples, it is hampered by the lack of optical sectioning and the need of acquiring many images for an accurate measurement of fluorescence lifetimes. Here, we report on the use of processing techniques to overcome these limitations, minimizing the acquisition time, while providing optical sectioning. We evaluated the application of the HiLo and the rapid lifetime determination (RLD) techniques for accurate measurement of fluorescence

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2

Waters, P. Dean, and David H. Burns. "Optimized Gated Detection for Lifetime Measurement over a Wide Range of Single Exponential Decays." Applied Spectroscopy 47, no. 1 (1993): 111–15. http://dx.doi.org/10.1366/0003702934048622.

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Optimal estimation parameters are determined for the rapid lifetime determination technique (RLD) of fitting an exponential model to luminescence decay data that exhibit a wide range of lifetimes. Optimization of the lifetime estimate by this technique depends on only two parameters—period of integration and separation between the periods of integration. Luminescence quenching experiments produce a range of decay lifetimes. Selection of a fixed set of measuring parameters to determine lifetime throughout the entire range can simplify instrumentation and result in enhanced computation speed. Th

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Soper, Steven A., and Benjamin L. Legendre. "Error Analysis of Simple Algorithms for Determining Fluorescence Lifetimes in Ultradilute Dye Solutions." Applied Spectroscopy 48, no. 3 (1994): 400–405. http://dx.doi.org/10.1366/0003702944028191.

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We have evaluated the use of two simple algorithms for determining the decay parameters describing a single exponential process for dyes with nanosecond and subnanosecond fluorescence lifetimes in the limit of low concentrations and high backgrounds from scattered photons generated by the solvent using experimental and Monte Carlo simulation results. These algorithms, the maximum likelihood estimator (MLE) and the rapid lifetime determination (RLD), are computationally easy to perform, allowing the evaluation of large amounts of data quickly and efficiently. The MLE and RLD methods were used t

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Cano-Raya, Clara, María D. Fernández Ramos, Luís F. Capitán Vallvey, Otto S. Wolfbeis, and Michael Schäferling. "Fluorescence Quenching of the Europium Tetracycline Hydrogen Peroxide Complex by Copper (II) and other Metal Ions." Applied Spectroscopy 59, no. 10 (2005): 1209–16. http://dx.doi.org/10.1366/000370205774430945.

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The europium–tetracycline complex [Eu(Tc)] is known to show only weak fluorescence with an emission maximum at 615 nm. On addition of hydrogen peroxide (HP), the strongly fluorescent [Eu(Tc)(HP)] complex is formed, which displays a 15-fold stronger luminescence intensity. This study describes the decrease in luminescence intensity of the [Eu(Tc)(HP)] complex in aqueous solution in the presence of Cu2+, Fe3+, Ag+, Al3+, Zn2+, Co2+, Ni2+, Mn2+, Ca2+, and Mg2+. Static and dynamic quenching can be induced by Cu2+, and these processes were quantified by means of their quenching constants. Stern–Vol

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Bürling, Kathrin, Mauricio Hunsche, Georg Noga, Lutz Pfeifer, and Lutz Damerow. "UV-induced fluorescence spectra and lifetime determination for detection of leaf rust (Puccinia triticina) in susceptible and resistant wheat (Triticum aestivum) cultivars." Functional Plant Biology 38, no. 4 (2011): 337. http://dx.doi.org/10.1071/fp10171.

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In modern agriculture, the use of cultivars that are resistant against specific stresses, e.g. pathogen infections, is an integral component. Considering the great demand for a rapid and objective screening method for stress resistance of new cultivars, the question arises, whether time resolved fluorescence spectroscopy is suitable for such purposes. Amongst others, infected plants might accumulate specific compounds such as salicylic acid and phenylpropanoid compounds as key substances in plant disease resistance, whereas synthesis and accumulation may influence fluorescence parameters such

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6

Zhang, X. "Rapid determination of long generation lifetime." IEE Proceedings G Circuits, Devices and Systems 139, no. 1 (1992): 1. http://dx.doi.org/10.1049/ip-g-2.1992.0001.

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7

Chan, Sing Po, Z. J. Fuller, J. N. Demas, Fei Ding, and B. A. DeGraff. "New Method of Rapid Luminescence Lifetime Determination Using Square-Wave Excitation." Applied Spectroscopy 55, no. 9 (2001): 1245–50. http://dx.doi.org/10.1366/0003702011953261.

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8

Plant, Randall L., and David H. Burns. "Quantitative, Depth-Resolved Imaging of Oxygen Concentration by Phosphorescence Lifetime Measurement." Applied Spectroscopy 47, no. 10 (1993): 1594–99. http://dx.doi.org/10.1366/0003702934334868.

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Minimally invasive determination of oxygen concentration can be made by measuring phosphorescence lifetime. We describe a technique for depth-resolved measurements of oxygen concentration using confocal imaging of phosphorescence lifetime. A confocal imaging system is used to obtain depth-resolved measurements of phosphorescence decay. The spatial resolution of the system is characterized in terms of the Line Spread Function and shown to be similar in both lateral and depth directions. Lifetimes are calculated with the use of the Rapid Lifetime Determination technique. One- and two-dimensional

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9

Zhong, Xin, Xinwei Wang, Liang Sun, and Yan Zhou. "Enhancement of rapid lifetime determination for time-resolved fluorescence imaging in forensic examination." Chinese Optics Letters 19, no. 4 (2021): 041101. http://dx.doi.org/10.3788/col202119.041101.

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10

Zhong, Xin, Xinwei Wang, Liang Sun, and Yan Zhou. "Enhancement of rapid lifetime determination for time-resolved fluorescence imaging in forensic examination." Chinese Optics Letters 19, no. 4 (2021): 041101. http://dx.doi.org/10.3788/col202119.041101.

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11

Liu, Chao, Xinwei Wang, Yan Zhou, and Yuliang Liu. "Timing and Operating Mode Design for Time-Gated Fluorescence Lifetime Imaging Microscopy." Scientific World Journal 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/801901.

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Steady-state fluorence imaging and time-resolved fluorescence imaging are two important areas in fluorescence imaging research. Fluorescence lifetime imaging is an absolute measurement method which is independent of excitation laser intensity, fluorophore concentration, and photobleaching compared to fluorescence intensity imaging techniques. Time-gated fluorescence lifetime imaging microscopy (FLIM) can provide high resolution and high imaging frame during mature FLIM methods. An abstract time-gated FLIM model was given, and important temporal parameters are shown as well. Aiming at different

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12

Kömmling, Anja, Matthias Jaunich, Payam Pourmand, Dietmar Wolff, and Mikael Hedenqvist. "Analysis of O-Ring Seal Failure under Static Conditions and Determination of End-of-Lifetime Criterion." Polymers 11, no. 8 (2019): 1251. http://dx.doi.org/10.3390/polym11081251.

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Determining a suitable and reliable end-of-lifetime criterion for O-ring seals is an important issue for long-term seal applications. Therefore, seal failure of ethylene propylene diene rubber (EPDM) and hydrogenated nitrile butadiene rubber (HNBR) O-rings aged in the compressed state at 125 °C and at 150 °C for up to 1.5 years was analyzed and investigated under static conditions, using both non-lubricated and lubricated seals. Changes of the material properties were analyzed with dynamic-mechanical analysis and permeability experiments. Indenter modulus measurements were used to investigate

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13

Gagnard, X., M. Taurin, and O. Bonnaud. "New rapid method for lifetime determination of gate oxide validated with bipolar/CMOS/DMOS technology." Microelectronics Reliability 39, no. 6-7 (1999): 759–63. http://dx.doi.org/10.1016/s0026-2714(99)00098-0.

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14

Bot, M., C. M. Middeldorp, E. J. C. de Geus, et al. "Validity of LIDAS (LIfetime Depression Assessment Self-report): a self-report online assessment of lifetime major depressive disorder." Psychological Medicine 47, no. 2 (2016): 279–89. http://dx.doi.org/10.1017/s0033291716002312.

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BackgroundThere is a paucity of valid, brief instruments for the assessment of lifetime major depressive disorder (MDD) that can be used in, for example, large-scale genomics, imaging or biomarker studies on depression. We developed the LIfetime Depression Assessment Self-report (LIDAS), which assesses lifetime MDD diagnosis according to DSM criteria, and is largely based on the widely used Composite International Diagnostic Interview (CIDI). Here, we tested the feasibility and determined the sensitivity and specificity for measuring lifetime MDD with this new questionnaire, with a regular CID

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15

Ni, T. Q., and L. A. Melton. "Fuel Equivalence Ratio Imaging for Methane Jets." Applied Spectroscopy 47, no. 6 (1993): 773–81. http://dx.doi.org/10.1366/0003702934066910.

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A 2-D fuel/oxygen equivalence ratio imaging system has been developed. The technique exploits the efficient quenching of the fluorescence of organic molecules by molecular oxygen in order to determine the fuel and oxygen partial pressures simultaneously. Following pulsed planar laser excitation of fluoranthene—a specially selected fluorescent dopant—two images of the fluorescence were recorded, with the second image being delayed by several nanoseconds. Use of a rapid lifetime determination algorithm yielded first a fluorescence lifetime image, and subsequently, with the assumption of Stern-Vo

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16

Ballew, Richard M., and J. N. Demas. "An error analysis of the rapid lifetime determination method for the evaluation of single exponential decays." Analytical Chemistry 61, no. 1 (1989): 30–33. http://dx.doi.org/10.1021/ac00176a007.

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17

Sharman, Kristin K., Ammasi Periasamy, Harry Ashworth, and J. N. Demas. "Error Analysis of the Rapid Lifetime Determination Method for Double-Exponential Decays and New Windowing Schemes." Analytical Chemistry 71, no. 5 (1999): 947–52. http://dx.doi.org/10.1021/ac981050d.

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18

Yi, Ruizhi, Wenwen Wu, and Xinping Zhang. "Femtosecond Autocorrelation of Localized Surface Plasmons." Nanomaterials 13, no. 9 (2023): 1513. http://dx.doi.org/10.3390/nano13091513.

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Plasmon electronic dephasing lifetime is one of the most important characteristics of localized surface plasmons, which is crucial both for understanding the related photophysics and for their applications in photonic and optoelectronic devices. This lifetime is generally shorter than 100 fs and measured using the femtosecond pump–probe technique, which requires femtosecond laser amplifiers delivering pulses with a duration even as short as 10 fs. This implies a large-scale laser system with complicated pulse compression schemes, introducing high-cost and technological challenges. Meanwhile, t

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19

Ballew, R. M., and J. N. Demas. "Error analysis of the rapid lifetime determination method for single exponential decays with a non-zero baseline." Analytica Chimica Acta 245 (1991): 121–27. http://dx.doi.org/10.1016/s0003-2670(00)80210-x.

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20

Millard, John A., Robert H. Dalling, and Leon J. Radziemski. "Time-Resolved Laser-Induced Breakdown Spectrometry for the Rapid Determination of Beryllium in Beryllium-Copper Alloys." Applied Spectroscopy 40, no. 4 (1986): 491–94. http://dx.doi.org/10.1366/0003702864508908.

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Time-resolved laser-induced breakdown spectrometry has been combined with the long spark technique and applied to the rapid determination of beryllium in beryllium-copper alloys. A calibration curve was developed which related the beryllium concentration in a solid copper matrix to the Be(I) 234.9-nm to Cu(II) 235.7-nm intensity ratio. The beryllium concentrations ranged from 0.001 to 0.22%. For the lowest concentration the relative standard deviation of replicate samples was 7%, implying a detection limit of 0.0002% (2 ppm) at a signal-to-noise ratio of 3. The excitation temperature was deter

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21

Ryder, Alan G. "Quantitative Analysis of Crude Oils by Fluorescence Lifetime and Steady State Measurements Using 380-nm Excitation." Applied Spectroscopy 56, no. 1 (2002): 107–16. http://dx.doi.org/10.1366/0003702021954287.

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Fluorescence emission and lifetime spectroscopy using 380-nm excitation have been successfully applied to the determination of API gravity and aromatic concentration of crude petroleum oils. Twelve crude oils from the North Sea with American Petroleum Institute (API) gravities of between 20 and 50 were analyzed; emission spectra were obtained with a standard fluorometer and the lifetime data with a pulsed ultraviolet light-emitting diode (UV-LED) coupled to a fluorescence lifetime system assembled in-house. A strong correlation between API gravity and the ratio of the fluorescence intensities

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22

Silva, Susana Figueiredo, José Paulo Domingues, and António Miguel Morgado. "Can we use rapid lifetime determination for fast, fluorescence lifetime based, metabolic imaging? Precision and accuracy of double-exponential decay measurements with low total counts." PLOS ONE 14, no. 5 (2019): e0216894. http://dx.doi.org/10.1371/journal.pone.0216894.

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23

Zitha-Bovens, Emrin, Peter Maas, Dick Wife, et al. "COMDECOM: Predicting the Lifetime of Screening Compounds in DMSO Solution." Journal of Biomolecular Screening 14, no. 5 (2009): 557–65. http://dx.doi.org/10.1177/1087057109336953.

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The technological evolution of the 1990s in both combinatorial chemistry and high-throughput screening created the demand for rapid access to the compound deck to support the screening process. The common strategy within the pharmaceutical industry is to store the screening library in DMSO solution. Several studies have shown that a percentage of these compounds decompose in solution, varying from a few percent of the total to a substantial part of the library. In the COMDECOM (COMpound DECOMposition) project, the compound stability of screening compounds in DMSO solution is monitored in an ac

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24

Khalil, Sabry, Alaa El-Beltagy, and Mohamed El-Sharnouby. "Potent Acrylamide Determination in Food Products Using Ion-Selective Electrode Technique." Membranes 11, no. 8 (2021): 645. http://dx.doi.org/10.3390/membranes11080645.

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A potent selective acrylamide liquid sensor based on the reaction of acrylamide with 2-(5-Bromo-2-pyridylazo)-5-[N-n-Propyl-N-(3-Sulfopropyl) amino] aniline reagent is successfully designed. The characteristics slope (52.33 mV/decade), linearity usable range from 1.0 × 10−7–1.0 × 10−1 molar, limit of detection (1.6 × 10−8) molar, selectivity attitude to several inorganic cations, amino acids and sugars, time of response (8 s), lifetime (four months), pH effect on the electrode potential and the basic validation parameters were studied. The desirable pH applicable range was 3.0–6.5, and the res

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25

Scott, W. J., E. Chapoteau, and A. Kumar. "Ion-selective membrane electrode for rapid automated determinations of total carbon dioxide." Clinical Chemistry 32, no. 1 (1986): 137–41. http://dx.doi.org/10.1093/clinchem/32.1.137.

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Abstract Previously described ion-selective membrane electrodes useful for determination of total carbon dioxide in biological fluids in automated analyzers show interference from several sources--e.g., fatty acids, keto acids, salicylate, heparin. Judicious selection of membrane components has produced a membrane with superior performance characteristics: short conditioning time, long lifetime in storage, rapid and stable response, low drift, and significantly less susceptibility to interference than other electrodes thus far reported. Samples can be analyzed at 240 samples or more per hour a

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26

Lehotová, Veronika, Monika Petruláková, and Ľubomír Valík. "Application of a new method to control microbial quality of foods based on the detection of oxygen consumption." Acta Chimica Slovaca 9, no. 1 (2016): 19–22. http://dx.doi.org/10.1515/acs-2016-0004.

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Abstract New analytical techniques, the GreenLight™ system for rapid enumeration of total viable counts (TVC) were used to estimate the numbers of bacteria inoculated in different levels in broth nutrient media. The new detection methodology was compared with agar plating EN ISO 4833:2003 method showing excellent correlation. The following coefficients of determination R2 = 0.985 and 0.999 were calculated for aerobic Pseudomonas aeruginosa and facultative anaerobic E. coli, respectively. After calibration, the system based on the principle of quenching of luminescence intensity and lifetime of

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27

Heeg, B. "Precision of mono-exponential decay estimates from rapid lifetime determination in the presence of signal photon and background noise." Measurement Science and Technology 25, no. 10 (2014): 105201. http://dx.doi.org/10.1088/0957-0233/25/10/105201.

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28

Zhu, Lijun, Lujun Zhu, Manling Sui, Daniel C. Ralph, and Robert A. Buhrman. "Variation of the giant intrinsic spin Hall conductivity of Pt with carrier lifetime." Science Advances 5, no. 7 (2019): eaav8025. http://dx.doi.org/10.1126/sciadv.aav8025.

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More than a decade after the first theoretical and experimental studies of the spin Hall conductivity (SHC) of Pt, both its dominant origin and amplitude remain in dispute. We report the experimental determination of the rapid variation of the intrinsic SHC of Pt with the carrier lifetime (τ) in the dirty-metal regime by incorporating finely dispersed MgO intersite impurities into the Pt, while maintaining its essential band structure. This conclusively validates the theoretical prediction that the SHC in Pt in the dirty-metal regime should be dominated by the intrinsic contribution, and shoul

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29

Skelly, E. M., and F. T. Distefano. "Clean Room and Microwave Digestion Techniques: Improvement in Detection Limits for Aluminum Determination by GF-AAS." Applied Spectroscopy 42, no. 7 (1988): 1302–6. http://dx.doi.org/10.1366/0003702884430119.

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A rapid, precise, and accurate method for the determination of aluminum in part-per-billion concentrations in biological materials using graphite-furnace atomic absorption spectroscopy has been developed. In order that the necessary accuracy and precision for the analysis of aluminum in bone and brain tissue could be obtained, reduction of laboratory environmental contributions to the aluminum blank was required. Use of a closed-vessel microwave digestion system and a clean room for sample preparation accomplished this goal by reducing Al concentrations in the digestion blanks from 10 ppb to 1

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Khalil, Sabry, and Ashraf Y. Elnaggar. "Selective Membrane Sensor for Aluminum Determination in Food Products, Real Samples and Standard Alloys." Membranes 11, no. 7 (2021): 504. http://dx.doi.org/10.3390/membranes11070504.

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The study involves the fabrication of an aluminum liquid membrane sensor based on the association of aluminum ions with the cited reagent 2,9-dimethyl-4,11-diphenyl -1,5,8,12-tetraaza cyclote tradeca-1,4,8,11-tetraene [DDTCT]. The characteristics slope (58 mV), rapid and linear response for aluminum ion was displayed by the proposed sensor within the concentration range 2.5 × 10−7–1.5 × 10−1 M, the detection limit (1.6 × 10−7) M, the selectivity behavior toward some metal cations, the response time 10 s), lifetime (150 days), the effect of pH on the suggested electrode potential and the requis

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31

Kaleli, T., and C. Hakan Gür. "Determination of surface residual stresses in carburised AISI 8620 steel by the magnetic Barkhausen noise method." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 7 (2020): 416–21. http://dx.doi.org/10.1784/insi.2020.62.7.416.

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Management of the residual stress state is vital for the design and production stages of carburised components in order to satisfy the technical requirements related to performance, fatigue behaviour and useful lifetime. This enforces the use of practical, reliable and time- and cost-effective stress measurement methods by manufacturers. This study aims to investigate the efficiency of the magnetic Barkhausen noise (MBN) method in rapid non-destructive determination of surface residual stresses in carburised steels. A series of AISI 8620 steel specimens with different residual stress states wa

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32

Ismaeel, Yusur Q., and Bashaer A. Al-Phalahy. "New Poly Vinyl Chloride Ion Selective Electrode for Potentiometric Analysis of Propranolol in its Pharmaceutical Formulations and Human Fluids." International Journal of Drug Delivery Technology 10, no. 02 (2020): 311–17. http://dx.doi.org/10.25258/ijddt.10.2.21.

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New, simple, sensitive and rapid method for the determination of propranolol in the pharmaceutical preparations and human fluids. The Buildup and electrochemical response characteristics of a poly vinyl chloride (PVC) selective membrane electrode for the determination of propranolol (POP) are described in this research. The proposed electrodes was composed of propranolol-bromophenol blue as ion-exchanger and Di-butyl phthalate (DBPH) (electrode A), tris (2-ethylhexyl) phosphate (TEHP) (electrode B), and ortho-nitrophenyloctylether (ONPOE) (electrode C), as plasticizers. The slope was 50.94, 57

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33

Kocheril, Philip A., Miranda I. Hiller, and Jessica Z. Kubicek-Sutherland. "Evidence of excited-state lifetime enhancement in dimyristoyl-phosphocholine nanodiscs by ultraviolet absorption spectroscopy." AIP Advances 13, no. 1 (2023): 015124. http://dx.doi.org/10.1063/5.0102149.

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Ultraviolet absorption spectroscopy is an analytical tool that is commonly utilized to determine protein concentrations, primarily due to characteristic absorption of tryptophan and tyrosine at 280 nm. Accurate concentration determination is essential to the accuracy of many biophysical techniques, and ultraviolet absorption provides a convenient and rapid method to assess protein concentration. However, the widespread usage of this method assumes that ultraviolet absorption is the same for individual amino acids in aqueous solution (where the molar extinction coefficient was measured) as for

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Kurzweil, Peter, Wolfgang Scheuerpflug, Christian Schell, and Josef Schottenbauer. "Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State of the Art, Review and Outlook." Batteries 10, no. 6 (2024): 177. http://dx.doi.org/10.3390/batteries10060177.

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The concept of pseudocapacitance is explored as a rapid and universal method for the state of health (SOH) determination of batteries and supercapacitors. In contrast to this, the state of the art considers the degradation of a series of full charge/discharge cycles. Lithium-ion batteries, sodium-ion batteries and supercapacitors of different cell chemistries are studied by impedance spectroscopy during lifetime testing. Faradaic and capacitive charge storage are distinguished by the relationship between the stored electric charge and capacitance. Batteries with a flat voltage–charge curve are

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Lu, Ren, and Xiaodong Tang. "Relationship between Early-Stage Features and Lifetime Maximum Intensity of Tropical Cyclones over the Western North Pacific." Atmosphere 12, no. 7 (2021): 815. http://dx.doi.org/10.3390/atmos12070815.

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The relationship between early-stage features and lifetime maximum intensity (LMI) of tropical cyclones (TCs) over the Western North Pacific (WNP) was investigated by ensemble machine learning methods and composite analysis in this study. By selecting key features of TCs’ vortex attributes and environmental conditions, a two-step AdaBoost model demonstrated accuracy of about 75% in distinguishing weak and strong TCs at genesis and a coefficient of determination (R2) of 0.30 for LMI estimation from the early stage of strong TCs, suggesting an underlying relationship between LMI and early-stage

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Karimi, Abbas, Abbas Afsharfarnia, Faraneh Zarafshan, and S. A. R. Al-Haddad. "A Novel Clustering Algorithm for Mobile Ad Hoc Networks Based on Determination of Virtual Links’ Weight to Increase Network Stability." Scientific World Journal 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/432952.

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The stability of clusters is a serious issue in mobile ad hoc networks. Low stability of clusters may lead to rapid failure of clusters, high energy consumption for reclustering, and decrease in the overall network stability in mobile ad hoc network. In order to improve the stability of clusters, weight-based clustering algorithms are utilized. However, these algorithms only use limited features of the nodes. Thus, they decrease the weight accuracy in determining node’s competency and lead to incorrect selection of cluster heads. A new weight-based algorithm presented in this paper not only de

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Horita, Teruhisa. "Progress of the Evaluation and Analysis Methods for Durability of SOFC Stacks." ECS Transactions 111, no. 6 (2023): 1347–56. http://dx.doi.org/10.1149/11106.1347ecst.

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Recent progress in the development of R&D for the evaluation and analytical methods of SOFC stack durability is reported under the NEDO Japanese national project. The goal of this project is the following two points: (1) to develop the advanced evaluation and analytical methods for the cell stacks which show a lifetime over 15 years (130 kh) with high efficiency of over 65% LHV, and (2) to develop the evaluation and analytical methods for dynamic operation mode such as rapid start-stop and load cycling. Three practical stacks (one flat tube and two types of planar) were supplied by the sta

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Gao, Xinglong, Zhihui Li, Qin Chen, Di Ding, and Aoping Peng. "Prediction of Orbit Decay for Large-Scale Spacecraft considering Rarefied Aerodynamic Perturbation Effects." International Journal of Aerospace Engineering 2022 (November 12, 2022): 1–13. http://dx.doi.org/10.1155/2022/8984056.

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The growing risk of falling debris from outer space as well as the atmospheric interaction effect makes the orbit decay prediction of large spacecraft in very low earth orbit (VLEO) increasingly significant. Focusing on the aerodynamic perturbation effects under multiscale and nonequilibrium states on the orbit decay of the large spacecraft in VLEO at the end of its lifetime, we developed a novel perturbation prediction model covering the entire altitude range before reentry to perform long-term and short-term predictions of the large-scale spacecraft. A unified local rapid engineering algorit

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Perry, Mike L., and Robert M. Darling. "(Invited) Development of a Simple and Rapid Diagnostic for Redox-Flow-Battery Cells." ECS Meeting Abstracts MA2022-02, no. 46 (2022): 1703. http://dx.doi.org/10.1149/ma2022-02461703mtgabs.

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Prof. Robert Savinell has made many important contributions to fuel-cell and flow-battery systems. Both of these systems utilize electrochemical flow cells to either generate or store electricity. Because of this commonality, one can leverage concepts used in one for adoption in the other. An important topic for any electrochemical system is durability. A considerable amount of work has been on this topic with polymer-electrolyte fuel cells (PEFCs); in fact, a textbook devoted to this topic was published over a decade ago [1]. However, despite a recent renaissance in redox-flow-battery (RFB) t

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40

Schneider, Dieter K., Wuxian Shi, Babak Andi, et al. "FMX – the Frontier Microfocusing Macromolecular Crystallography Beamline at the National Synchrotron Light Source II." Journal of Synchrotron Radiation 28, no. 2 (2021): 650–65. http://dx.doi.org/10.1107/s1600577520016173.

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Two new macromolecular crystallography (MX) beamlines at the National Synchrotron Light Source II, FMX and AMX, opened for general user operation in February 2017 [Schneider et al. (2013). J. Phys. Conf. Ser. 425, 012003; Fuchs et al. (2014). J. Phys. Conf. Ser. 493, 012021; Fuchs et al. (2016). AIP Conf. Proc. SRI2015, 1741, 030006]. FMX, the micro-focusing Frontier MX beamline in sector 17-ID-2 at NSLS-II, covers a 5–30 keV photon energy range and delivers a flux of 4.0 × 1012 photons s−1 at 1 Å into a 1 µm × 1.5 µm to 10 µm × 10 µm (V × H) variable focus, expected to reach 5 × 1012 photons

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Seminа, A. N. "Identification of Pasteurella multocida by polymerase chain reaction." International bulletin of Veterinary Medicine 3 (2020): 14–18. http://dx.doi.org/10.17238/issn2072-2419.2020.3.14.

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Pasteurellosis having a fairly wide distri-bution can be a reason that hinders the suc-cessful development of poultry farming. The causes and conditions for the occurrence of this disease in farms are often not specific. Pasteurella multocida can manifest itself from an extremely weakened Pasteurella carrier to a highly virulent pathogen. A sick bird is a hidden carrier of this disease and is subject to further culling. All this ultimately leads to significant economic losses. Rapid and reliable detection of this patho-gen will reduce or completely prevent eco-nomic losses. The clinical manife

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Zhou, Meng, Chenjie Zeng, Qi Li, Tatsuya Higaki, and Rongchao Jin. "Gold Nanoclusters: Bridging Gold Complexes and Plasmonic Nanoparticles in Photophysical Properties." Nanomaterials 9, no. 7 (2019): 933. http://dx.doi.org/10.3390/nano9070933.

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Recent advances in the determination of crystal structures and studies of optical properties of gold nanoclusters in the size range from tens to hundreds of gold atoms have started to reveal the grand evolution from gold complexes to nanoclusters and further to plasmonic nanoparticles. However, a detailed comparison of their photophysical properties is still lacking. Here, we compared the excited state behaviors of gold complexes, nanolcusters, and plasmonic nanoparticles, as well as small organic molecules by choosing four typical examples including the Au10 complex, Au25 nanocluster (1 nm me

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Guan, Xiaogao, Xianzhu Xu, Yanli Wu, et al. "One-Pot Hydrothermal Synthesis of mSiO2-N-CDs with High Solid-State Photoluminescence as a Fluorescent Probe for Detecting Dopamine." Nanomaterials 13, no. 23 (2023): 2989. http://dx.doi.org/10.3390/nano13232989.

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An effective fluorescent probe (mSiO2-N-CDs) was prepared by embedding N-CDs into mesoporous silica via a simple one-pot hydrothermal reaction and applied to the detection of dopamine (DA). Mesoporous silica not only provided a skeleton to prevent the aggregation of N-CDs but also a medium for the centrifugal collection of N-CDs, avoiding the need for dialysis and freeze-drying. The formation process, phase composition, morphology, and luminescence properties of the composite were studied in detail. The synthesized mSiO2-N-CDs possessed spherical morphology, a smooth surface, and a diameter of

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Cao, Deyan, Zhu Zhu, Siyuan Zhao, et al. "Concentrations, Sources and Health Risk Assessment of Polycyclic Aromatic Hydrocarbons in Chinese Herbal Medicines." Molecules 29, no. 5 (2024): 972. http://dx.doi.org/10.3390/molecules29050972.

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The determination and evaluation of 16 polycyclic aromatic hydrocarbons (PAHs) in seven Chinese herbal medicines (CHMs) were conducted through a rapid and straightforward extraction and purification method, coupled with GC-MS. A sample-based solid-phase extraction (SPE) pretreatment technique, incorporating isotopic internal standards, was employed for detecting various medicinal parts of CHMs. The assay exhibited linearity within the range of 5 to 500 ng/mL, with linear coefficients (R2) for PAHs exceeding 0.999. The recoveries of spiked standards ranged from 63.37% to 133.12%, with relative

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Breuillard, H., O. Agapitov, A. Artemyev, et al. "Field-aligned chorus wave spectral power in Earth's outer radiation belt." Annales Geophysicae 33, no. 5 (2015): 583–97. http://dx.doi.org/10.5194/angeo-33-583-2015.

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Abstract. Chorus-type whistler waves are one of the most intense electromagnetic waves generated naturally in the magnetosphere. These waves have a substantial impact on the radiation belt dynamics as they are thought to contribute to electron acceleration and losses into the ionosphere through resonant wave–particle interaction. Our study is devoted to the determination of chorus wave power distribution on frequency in a wide range of magnetic latitudes, from 0 to 40°. We use 10 years of magnetic and electric field wave power measured by STAFF-SA onboard Cluster spacecraft to model the initia

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Bravo, Jiménez Humberto, Monroy José Luis Bizueto, and Espinoza Ivonne González. "Study on the Clinical Performance of Serum Hyponatremia in the Determination of Complicated Acute Appendicitis in the Adult Population at the General Hospital Zone No. 3, OOAD Aguascalientes." International Journal of Medical Science and Clinical Research Studies 04, no. 11 (2024): 2073–80. https://doi.org/10.5281/zenodo.14223350.

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<strong>Background:</strong> Appendicitis is the most common abdominal infection and is the main surgical emergency worldwide, affecting approximately 1 in 11 people during their lifetime. Nowadays, distinguishing between uncomplicated and complicated appendicitis is increasingly important due to the increasing evidence supporting the possibility of treating uncomplicated appendicitis with antibiotics instead of resorting directly to surgery. This differentiation requires combining clinical findings with laboratory and imaging studies. In our hospital setting, where the use of C-reactive

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Thevenot, D. R., K. Tóth, R. A. Durst, and G. S. Wilson. "Electrochemical Biosensors: Recommended Definitions and Classification." Pure and Applied Chemistry 71, no. 12 (1999): 2333–48. http://dx.doi.org/10.1351/pac199971122333.

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Two Divisions of the International Union of Pure and Applied Chemistry (IUPAC), namely Physical Chemistry (Commission I.7 on Biophysical Chemistry formerly Steering Committee on Biophysical Chemistry) and Analytical Chemistry (Commission V.5 on Electroanalytical Chemistry) have prepared recommendations on the definition, classification and nomenclature related to electrochemical biosensors; these recommendations could, in the future, be extended to other types of biosensors.An electrochemical biosensor is a self-contained integrated device, which is capable of providing specific quantitative o

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Hugo, Yohanes, Kailun Yang, and Wiebrand Kout. "Degradation and Protection Mechanisms of Platinum-Based Catalysts in Hydrogen-Bromine Flow Batteries." ECS Meeting Abstracts MA2024-01, no. 3 (2024): 582. http://dx.doi.org/10.1149/ma2024-013582mtgabs.

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Cost-effective and large-scale electrical energy storage is pivotal in facilitating the assimilation of renewable energy sources like wind and solar, as well as enhancing the resilience of the future electricity grid. Hydrogen-Bromine flow battery (HBFB) technology is a candidate for a low cost and flexible system. Bromine is abundantly available on Earth. In addition, the reaction between bromine and bromide is characterized by rapid kinetic properties, thus no platinum group metals (PGMs) are required on the bromine side of the cell as a catalyst to sustain a high current density of >500

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Thatipamula, Sai, Muhammad Aadil Khan, and Simona Onori. "On-Board Diagnostics for Li-Ion Batteries Using Electrochemical Impedance Spectroscopy (EIS)-Based Health Estimation Models." ECS Meeting Abstracts MA2024-01, no. 53 (2024): 2802. http://dx.doi.org/10.1149/ma2024-01532802mtgabs.

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There exists a growing need for standardized On-Board Diagnostics (OBD) for electric vehicles [1] to provide accurate health metrics and guarantees to both consumers and manufacturers. Previous work has shown the powerful LIB capacity-based State-of-Health (SoH) estimation capability of Electrochemical Impedance Spectroscopy (EIS) measurements and data-driven models [2] [3]. Since EIS measurements are dependent not only on SoH but also State-of-Charge (SoC) and temperature [4], it is important that the measurements are conducted after the cell reaches an equilibrium, and that these other varia

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Vlahakis, Niko, Arden Clauss, and Jose Rodriguez. "Mosaic 3D molecular crystal lattices ironed out by electron beam induced damage." Structural Dynamics 12, no. 2_Supplement (2025): A255. https://doi.org/10.1063/4.0000561.

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Microcrystal electron diffraction (MicroED, or 3D ED) enables atomic structure determination from small or imperfect crystals unsuitable for X-ray diffraction. The method is fundamentally limited by electron-beam induced radiolytic damage that disrupts the crystal lattice and manifests as a global decay in Bragg reflection intensity, beginning with the highest resolution reflections. Our current understanding of beam-induced damage in molecular crystals can be challenged, however, by the presence of non-monotonic fluctuations in reflection intensities observed from continuously illuminated, st

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