Results 51 to 60 of about 825 (180)

Characterization of H2S QEPAS detection in methane-based gas leaks dispersed into environment [PDF]

, 2022
The increase in fatal accidents and chronic illnesses caused by hydrogen sulfide (H2S) exposure occurring in various workplaces is pushing the development of sensing systems for continuous and in-field monitoring of this hazardous gas.
Olivieri, Mariagrazia, Marilena Giglio, Dong, Lei, Hongpeng Wu, Lei Dong, Mariagrazia Olivieri, Pietro Patimisco, Wu, Hongpeng, Sampaolo, Angelo, Menduni, Giansergio, Giansergio Menduni, Vincenzo Spagnolo, Giglio, Marilena, Spagnolo, Vincenzo, Angelo Sampaolo, Patimisco, Pietro   +15 more
core   +1 more source

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

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

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

Low noise, open-source QEPAS system with instrumentation amplifier [PDF]

Scientific Reports, 2019
Abstract Quartz enhanced photoacoustic spectroscopy (QEPAS) is a rapidly developing, ultrasensitive method for trace gas sensing. Adequate electronic amplifier, well matched to the quartz characteristics is crucial for overall system performance. Here we present an open source circuit for QEPAS signal amplification.
Mateusz Winkowski, Tadeusz Stacewicz
openaire   +3 more sources

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

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

Breath by Breath: Navigating the Landscape of Exhaled Breath in Clinical Research and Prospects for the Future

Journal of Analytical Methods in Chemistry, Volume 2026, Issue 1, 2026.
Exhaled breath analysis (EBA) has evolved as a noninvasive diagnostic technique with enormous promise in healthcare. The development in this area is based on the concept that the breathalyzers employed to measure the alcohol concentration in the blood can be utilized to evaluate health by analyzing the intricate chemical makeup of exhaled breath, which
Nisha Parikh, Hetansh Rao, Akshada Dabhade, Vishwa Patel, Vikalp Shroff, Deep Prajapati, Palak Parikh, Ketan Ranch, B. Mahalakshmi, Shery Jacob, Sai H. S. Boddu, Maria Jose Trujillo-Rodriguez   +11 more
wiley   +1 more source

Antibiotic Use in Livestock: A Driver of Resistance in Africa and the Path to Safer Alternatives

MicrobiologyOpen, Volume 14, Issue 6, December 2025.
The incorporation of antibiotics into animal feeds is one of the drivers of antibiotic resistance, a global One Health challenge. To reduce the burden of antibiotic resistance, the use of alternative growth promoters and drugs must be promoted, as well as sensitization and implementation of regulations.
Mercy A. Alabi, Hafizah Y. Chenia, Johnson Lin   +2 more
wiley   +1 more source