Publications by authors named "R Janta"
Volatile organic compounds (VOCs) notably influence air quality, climate and secondary pollutant formation, particularly regions in where urban emissions interact with natural biogenic sources at the interface of urban and natural ecosystems. This study examined the VOC profiles in the Sakaerat dry evergreen forest and the urban area of Nakhon Ratchasima, Thailand, throughout 2023, focusing on seasonal and spatial variations in biogenic and anthropogenic VOCs (BVOCs and AVOCs, respectively). Hydrocarbons, mainly alkanes, dominated VOC compositions, contributing 43.
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- Airborne microorganism data in Southeast Asia is limited, and this study is the first to explore the community and diversity of these microorganisms in Northern Thailand during 2020 smoke haze and non-haze periods.
- Results showed that smoke haze periods had significantly higher concentrations of particulate matter (PM) and altered microbial communities: bacterial diversity increased while fungal diversity decreased.
- The study emphasizes the importance of airborne microorganisms and their association with PM, chemical composition, and meteorological conditions, revealing health concerns from pathogens present in both periods, particularly during smoke haze.
Rubber trees emit a range of volatile organic compounds (VOCs), including isoprene, monoterpenes, and sesquiterpenes, as part of their natural metabolism. These VOCs can significantly influence air quality through photochemical reactions that produce ozone and secondary organic aerosols (SOAs). This study examines the impact of VOCs detected in a rubber tree plantation in Northeastern Thailand on air quality, highlighting their role in atmospheric reactions that lead to the formation of ozone and SOAs.
View Article and Find Full Text PDFThe coronavirus (COVID-19) pandemic first impacted Thailand in early 2020. The government imposed lockdown measures from April to May 2020 to control the spread of infection. Daily lifestyles then morphed into a so-called new normal in which activities were conducted at home and people avoided congregation in order to prevent the spread of an infectious disease.
View Article and Find Full Text PDFEthnopharmacological Relevance: Bougainvillea spectabilis is an ornamental shrub from Nyctaginaceae family, widely used in the traditional medicine in the treatment of pain, inflammation, and ulcer. Some research investigated the analgesic potential of this plant, however, the in-depth analysis of its antinociceptive properties and molecular mechanism(s) are yet to be revealed.
Purpose Of The Study: This study, therefore, investigated the antinociceptive potential of methanol extract of the leaves of B.