Results 51 to 60 of about 1,487 (151)

Application of Cluster Analysis to Examine the Performance of Low-Cost Volatile Organic Compound Sensors

open access: yesBuildings, 2023
Airtight energy-efficient buildings of today need efficient ventilation to secure high indoor air quality. There is a need for affordable and reliable sensors to make demand control available in a broad range of ventilation systems.
Jakub Kolarik   +6 more
doaj   +1 more source

Combined Effects of Air Humidity and Temperature on Biogenic Volatile Organic Compound Emissions and Photosynthesis

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 3, 16 February 2026.
Abstract Temperature and air humidity are critical environmental factors regulating photosynthesis and biogenic volatile organic compound (BVOC) emissions from plants, which influence air quality and climate change. While previous research has demonstrated the impacts of temperature on photosynthesis and BVOCs, the effects of humidity and the combined ...
M. Riches   +4 more
wiley   +1 more source

Proteogenomic Characterization Reveals Subtype‐Specific Therapeutic Potential for HER2‐Low Breast Cancer

open access: yesAdvanced Science, Volume 13, Issue 12, 27 February 2026.
Multiomic profiling of HER2‐low breast cancer identifies three proteomic subtypes with distinct therapeutic strategies: endocrine, antiangiogenic, and anti‐HER2 therapies. Genomic and lactate modification landscapes are detailed, providing insights for precise management.
Shouping Xu   +20 more
wiley   +1 more source

Measurement of Volatile Compounds for Real-Time Analysis of Soil Microbial Metabolic Response to Simulated Snowmelt

open access: yesFrontiers in Microbiology, 2021
Snowmelt dynamics are a significant determinant of microbial metabolism in soil and regulate global biogeochemical cycles of carbon and nutrients by creating seasonal variations in soil redox and nutrient pools.
Junhyeong Kim   +10 more
doaj   +1 more source

Noninvasive Disease Diagnostics: The Swiss Contribution Highlights to Breath Analysis Research

open access: yesHelvetica Chimica Acta, Volume 109, Issue 2, February 2026.
Breath analysis networks across Switzerland linking health monitoring, clinical applications, population studies, and data‐driven public health decisions. ABSTRACT To celebrate the 125th anniversary of the Swiss Chemical Society, we present a review and perspective to highlight the recent research in breath analysis that has been conducted in ...
Stefan James Swift   +6 more
wiley   +1 more source

A practical workflow to facilitate analysis of the emission dynamics of non-target BVOCs in terrestrial ecosystems by PTR-TOF-MS

open access: yesFrontiers in Ecology and Evolution
Proton Transfer Reaction Time-of-Flight Mass Spectrometry (PTR-TOF-MS) provides high-resolution, real-time tracking of volatile organic compounds (VOCs), yet its analytical workflows for complex mixtures are often underexplored.
Mathias Fontez   +5 more
doaj   +1 more source

In-Depth Investigation of the Chemical Profile of Pelargonium odoratissimum (L.) L’Hér. Hydrolate by SPME-GC/MS, GC/MS, LVI-GC/MS and PTR-Tof-MS Techniques

open access: yesChemosensors
Hydrolates are aromatic aqueous solutions saturated with volatile water-soluble compounds of essential oil. Despite their potential, hydrolates remain less explored than essential oils. In this work, the hydrolate of Pelargonium odoratissimum (L.) L’Hér.
Cosimo Taiti   +4 more
doaj   +1 more source

Tracing coffee origin by PTR-ToF-MS [PDF]

open access: yes, 2014
Coffee aroma is strongly affected by the bean variety and their geographical origin. Determination of geographic origin of coffee is highly demanded for product traceability, authentication and marketing. In this study, the aromatic profiles of six roasted C.
Yener, Sine   +7 more
openaire  

Ammonia Observations Over Large North American Cities

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 23, 16 December 2025.
Abstract Ammonia (NH3) contributes to fine particle formation and nitrogen deposition. Observations of NH3 are limited compared to other major anthropogenic pollutants. Here, we explore the relationships between NH3 and other urban pollutants using measurements collected from the NASA DC‐8 aircraft during the Atmospheric Emissions and Reactions ...
Emily R. Lill   +21 more
wiley   +1 more source

Evolutionary and functional relationships between plant and microbial C1 metabolism in terrestrial ecosystems

open access: yesNew Phytologist, Volume 248, Issue 3, Page 1132-1153, November 2025.
Summary One‐carbon (C1) metabolism, centered on the universal methyl donor S‐adenosyl methionine (SAM), plays critical roles in biosynthesis, redox regulation, and stress responses across plants and microbes. A recently proposed photosynthetic C1 pathway links SAM methyl groups directly to RuBisCO‐mediated CO2 assimilation and integrates with nitrogen ...
Kolby J. Jardine   +6 more
wiley   +1 more source

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