Results 71 to 80 of about 2,335 (228)

A MEMS-Enabled Deployable Trace Chemical Sensor Based on Fast Gas-Chromatography and Quartz Enhanced Photoacousic Spectoscopy

Sensors, 2019
This paper reports on a portable selective chemical sensor for hazardous vapors at trace levels, which combines a two-stage purge and trap vapor pre-concentration system, a Micro-Electro-Mechanical-System (MEMS) based fast gas-chromatographic (FAST-GC ...
Stefano Zampolli, Sandro Mengali, Nicola Liberatore, Ivan Elmi, Luca Masini, Michele Sanmartin, Roberto Viola   +6 more
doaj   +1 more source

Mid-infrared intracavity quartz-enhanced photoacoustic spectroscopy with pptv – Level sensitivity using a T-shaped custom tuning fork

Photoacoustics, 2022
Resonant optical power buildup inside a high finesse cavity is exploited to boost the sensitivity in quartz-enhanced photoacoustic spectroscopy (QEPAS) for CO, N2O and H2O detection, operating at a wavelength of 4.59 µm.
Jakob Hayden, Marilena Giglio, Angelo Sampaolo, Vincenzo Spagnolo, Bernhard Lendl   +4 more
doaj   +1 more source

Simultaneous Detection of Methane, Ethane, and Propane by QEPAS Sensors for On-Site Hydrocarbon Characterization and Production Monitoring

ACS Omega, 2022
Natural gas is sampled and produced throughout the lifespan of a petroleum field. Gas composition and isotope data are critical inputs in the exploration and field development, such as gas show identification, petroleum system analysis, fluid ...
P. Luo, J. Harrist, G. Menduni, Rabah Mesdour, Nathan Stmichel, A. Sampaolo   +5 more
semanticscholar   +1 more source

Acoustic Detection Module Design of a Quartz-Enhanced Photoacoustic Sensor

Sensors, 2019
This review aims to discuss the latest advancements of an acoustic detection module (ADM) based on quartz-enhanced photoacoustic spectroscopy (QEPAS). Starting from guidelines for the design of an ADM, the ADM design philosophy is described.
Tingting Wei, Hongpeng Wu, Lei Dong, Frank K. Tittel   +3 more
doaj   +1 more source

Signal-to-Noise Ratio Analysis for the Voltage-Mode Read-Out of Quartz Tuning Forks in QEPAS Applications

Micromachines, 2023
Quartz tuning forks (QTFs) are employed as sensitive elements for gas sensing applications implementing quartz-enhanced photoacoustic spectroscopy. Therefore, proper design of the QTF read-out electronics is required to optimize the signal-to-noise ratio
M. di Gioia, Luigi Lombardi, C. Marzocca, G. Matarrese, G. Menduni, P. Patimisco, V. Spagnolo   +6 more
semanticscholar   +1 more source

Single-tube on-beam quartz-enhanced photoacoustic spectroscopy. [PDF]

, 2016
Quartz-enhanced photoacoustic spectroscopy (QEPAS) with a single-tube acoustic microresonator (AmR) inserted between the prongs of a custom quartz tuning fork (QTF) was developed, investigated, and optimized experimentally.
Angelo Sampaolo, Frank K. Tittel, Hongpeng Wu, Huadan Zheng, Lei Dong, Lei Zhang, Pietro Patimisco, Suotang Jia, Vincenzo Spagnolo, Wangbao Yin, Weiguang Ma, Xukun Yin   +11 more
core   +1 more source

Hydrogen Halide Gas Sensors: Active Materials, Operation Principles, and Emerging Technologies

Interdisciplinary Materials, Volume 5, Issue 1, Page 85-123, January 2026.
This review considers hydrogen halide (HX) gas sensors across functional materials and principles: acoustic, chemical, optical and nanophotonic. The strong acidity and reactivity of HX gases are discussed as constraints for stability and selectivity of these devices.
Xiuzhen Liu, Nikita Tukachev, Kehang Wang, Dmirty Zhirihin, Yaopeng Cheng, Pavel Krasnov, Mingzhao Song, Soslan Khubezhov, Wenping Yin, Emmanuel Stratakis, Sailing He, Andrey L. Rogach, Sergey Makarov   +12 more
wiley   +1 more source

The Influence of Different Ciprofloxacin Residue Levels in Water on Quinolone Resistance and Bacterial Taxa in the Tilapia Gut

Aquaculture Research, Volume 2026, Issue 1, 2026.
The presence of ciprofloxacin (CIP) residues in aquatic environments may induce antibiotic resistance in tilapia and alter the diversity of their gut microbiota, highlighting the critical importance of understanding the risks associated with antibiotic contamination.
Gaowei Hou, Wenjun Liu, Li Lin, Ting Huang   +3 more
wiley   +1 more source

Tuning forks with optimized geometries for quartz-enhanced photoacoustic spectroscopy [PDF]

, 2019
We report on the design, realization, and performance of novel quartz tuning forks (QTFs) optimized for quartz-enhanced photoacoustic spectroscopy (QEPAS).
Cable, Alex, dello Russo, Stefano, Giglio, Marilena, Mackowiak, Verena, Patimisco, Pietro, Rossmadl, Hubert, Sampaolo, Angelo, Spagnolo, Vincenzo, Tittel, Frank K.   +8 more
core   +1 more source

Profiling of Antimicrobial Resistance Genes and Genotype–Phenotype Associations in Salmonella spp. Isolated Along the Broiler Production Chain in Karnataka, India

International Journal of Food Science, Volume 2026, Issue 1, 2026.
The emergence and dissemination of antimicrobial resistance genes (ARGs) in poultry‐origin Salmonella spp. pose a threat to food safety. This study characterized the genotypic antimicrobial resistance (AMR) in Salmonella spp. isolates across the broiler chicken production chain in Karnataka, India, and the co‐occurrence between AMR phenotypes and ...
Mohammad Nasim Sohail, Srikrishna Isloor, Doddamane Rathnamma, S. Chandra Priya, Belamaranahally M. Veeregowda, Nagendra R. Hegde, Nicola J. Williams, Csaba Varga, Poulami Jha   +8 more
wiley   +1 more source