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A smartphone-enabled colorimetric sensor based on VS quantum dots for Rapid and on-site detection of ferric ions.
Spectrochim Acta A Mol Biomol Spectrosc
December 2024
Department of Physics, Institute of Science, Banaras Hindu University, Varanasi 221005, India. Electronic address:
This research delves into the holistic hydrothermal synthesis of VS QDs and their subsequent utilization as a fluorescent probe for the subtle detection of ferric ions (Fe) in practical sample matrices. The detection paradigms harness a colorimetric sensing mechanism, amplified by smartphone-enabled analytical integration for improved precision and real-time monitoring. A comprehensive suite of analytical characterization techniques has been employed, revealing that the as-synthesized VS QDs feature a surface densely populated with functional groups.
View Article and Find Full Text PDFThe X-Ray Sensor (XRS) has been making full-disk observations of the solar soft X-ray irradiance onboard National Oceanic and Atmospheric Administration's (NOAA) Geostationary Operational Environmental Satellites since 1975. Critical information about solar activity for space weather operations is provided by XRS measurements, such as the classification of solar flare magnitude based on X-ray irradiance level. The GOES-R series of XRS sensors, with the first in the series launched in November 2016, has a completely different instrument design compared to its predecessors, GOES-1 through GOES-15.
View Article and Find Full Text PDFOn the concepts and correct use of radiometric quantities for assessing the light environment and their application to plant research.
Biophys Rev
June 2023
Hokkaido Agricultural Research Center, National Agriculture and Food Research Organization, Sapporo, Japan.
Light is one of the most important factors for photosynthetic organisms to grow. Historically, the amount of light in plant sciences has been referred to as light intensity, irradiance, photosynthetic active radiation, photon flux, photon flux density, etc. On occasion, all these terms are used interchangeably, yet they refer to different physical units and each metric offers distinct information.
View Article and Find Full Text PDFCharacterization of a Marine Diatom Chitin Synthase Using a Combination of Meta-Omics, Genomics, and Heterologous Expression Approaches.
mSystems
April 2023
Institut de Biologie de l'ENS (IBENS), Département de Biologie, École Normale Supérieure, CNRS, INSERM, Université PSL, Paris, France.
β-Chitin has important ecological and physiological roles and potential for widespread applications, but the characterization of chitin-related enzymes from β-chitin producers was rarely reported. Querying against the Oceans Gene Atlas, 4,939 chitin-related unique sequences from 12 Pfam accessions were found in Bacillariophyta metatranscriptomes. Putative chitin synthase (CHS) sequences are decreasingly present in Crustacea (39%), Stramenopiles (16%) and Insecta (14%) from the Marine Atlas of Oceans Unigenes version 1 Metatranscriptomes (MATOUv1+T) database.
View Article and Find Full Text PDFTraceable Characterization of Nanomaterials by X-ray Spectrometry Using Calibrated Instrumentation.
Nanomaterials (Basel)
June 2022
Physikalisch-Technische Bundesanstalt, Abbestraße 2-12, 10587 Berlin, Germany.
Traceable characterization methods allow for the accurate correlation of the functionality or toxicity of nanomaterials with their underlaying chemical, structural or physical material properties. These correlations are required for the directed development of nanomaterials to reach target functionalities such as conversion efficiencies or selective sensitivities. The reliable characterization of nanomaterials requires techniques that often need to be adapted to the nano-scaled dimensions of the samples with respect to both the spatial dimensions of the probe and the instrumental or experimental discrimination capability.
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