PCR-Independent Detection of Bacterial Species-Specific 16S rRNA at 10 fM by a Pore-Blockage Sensor. [PDF]
, 2016 A PCR-free, optics-free device is used for the detection of Escherichia coli (E. coli) 16S rRNA at 10 fM, which corresponds to ~100-1000 colony forming units/mL (CFU/mL) depending on cellular rRNA levels.
Banda, Anisha +7 more
core +1 more source
Journal of Integrative Agriculture, 2022 Denitrification-induced nitrogen (N) losses from croplands may be greatly increased by intensive fertilization. However, the accurate quantification of these losses is still challenging due to insufficient available in situ measurements of soil ...
Yan LIU +9 more
doaj
Sensors, 2020 A ratiometric oxygen sensor based on a platinum octaethylporphyrin (PtOEP)–coumarin 6 (C6)/poly (styrene-trifluoroethyl methacrylate) (poly (St-TFEMA)) film was developed for automatic dissolved oxygen (DO) detection. The oxygen-sensing film according to
Honglin Zhang, Zhiguo Zhang
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Compact hollow waveguide mid-infrared gas sensor for simultaneous measurements of ambient CO2 and water vapor [PDF]
, 2020 A compact, sensitive and stable hollow waveguide (HWG) mid-infrared gas sensor, based on gas absorption lines using wavelength modulation spectroscopy with a second harmonic (WMS-2f) detection scheme, was developed for simultaneous measurements of ...
Chen, Weidong +7 more
core +3 more sources
Quantum-optical communication rates through an amplifying random medium [PDF]
, 2002 We study the competing effects of stimulated and spontaneous emission on the information capacity of an amplifying disordered waveguide. At the laser threshold the capacity reaches a "universal" limit, independent of the degree of disorder.
A. L. Moustakas +23 more
core +4 more sources
A Solid Trap and Thermal Desorption System with Application to a Medical Electronic Nose
Sensors, 2008 In this paper, a solid trap/thermal desorption-based odorant gas condensation system has been designed and implemented for measuring low concentration odorant gas. The technique was successfully applied to a medical electronic nose system.
Xuntao Xu +5 more
doaj +1 more source
Learning Something From Nothing: The Critical Importance of Rethinking Microbial Non-detects
Frontiers in Microbiology, 2018 Accurate estimation of microbial concentrations is necessary to inform many important environmental science and public health decisions and regulations.
Alex Ho Shing Chik +4 more
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Concentration Sensitivity of Nucleic Acid and Protein Molecule Detection Using Nanowire Biosensors
Biophysica, 2021 The concentration detection limit (DL) of biomacromolecules attainable using a nanowire detector has become a topical issue. A DL of 10−15 M is required to reveal oncological and infectious diseases at an early stage.
Yuri D. Ivanov +3 more
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Speciation without chromatography: Part 2. Determination of tributyltin by chloride generation flow injection atomic absorption spectrometry [PDF]
, 2002 A procedure is described for the quantitation of tributyltin in aqueous samples and extracts based on its relatively high volatility in halide media, permitting vapour phase sampling from the headspace above such samples.Tributyltin chloride (TBT-C1) was
Christine Scriver +13 more
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Spectral Assessment of Organic Matter with Different Composition Using Reflectance Spectroscopy
Remote Sensing, 2021 Soil surveys are critical for maintaining sustainable use of natural resources while minimizing harmful impacts to the ecosystem. A key soil attribute for many environmental factors, such as CO2 budget, soil fertility and sustainability, is soil organic ...
Nicolas Francos +2 more
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