Results 31 to 40 of about 207,386 (342)

Laboratory photo-chemistry of pyrene clusters: an efficient way to form large PAHs

, 2018
In this work, we study the photodissociation processes of small PAH clusters (e.g., pyrene clusters). The experiments are carried out using a quadrupole ion trap in combination with time-of-flight (QIT-TOF) mass spectrometry. The results show that pyrene
Chen, Tao, Tielens, Alexander G. G. M., Zhen, Junfeng   +2 more
core   +1 more source

Heterogeneous reactions of particulate matter-bound PAHs and NPAHs with NO3/N2O5, OH radicals, and O3 under simulated long-range atmospheric transport conditions: reactivity and mutagenicity. [PDF]

, 2014
The heterogeneous reactions of ambient particulate matter (PM)-bound polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs (NPAHs) with NO3/N2O5, OH radicals, and O3 were studied in a laboratory photochemical chamber. Ambient PM2.5 and PM10 samples were
Arey, Janet, Atkinson, Roger, Dashwood, Roderick H, Jariyasopit, Narumol, Schrlau, Jill, Simonich, Staci L Massey, Tao, Shu, Yu, Tian-Wei, Zimmermann, Kathryn   +8 more
core   +2 more sources

Remediation approaches for polycyclic aromatic hydrocarbons (PAHs) contaminated soils: Technological constraints, emerging trends and future directions.

Chemosphere, 2017
For more than a decade, the primary focus of environmental experts has been to adopt risk-based management approaches to cleanup PAH polluted sites that pose potentially destructive ecological consequences.
Saranya Kuppusamy, P. Thavamani, Kadiyala Venkateswarlu, Y. Lee, R. Naidu, M. Megharaj   +5 more
semanticscholar   +1 more source

Sorption of PAHs to microplastic and their bioavailability and toxicity to marine copepods under co-exposure conditions.

Environmental Pollution, 2019
Organic chemical pollutants associated with microplastic (MP) may represent an alternative exposure route for these chemicals to marine biota. However, the bioavailability of MP-sorbed organic pollutants under conditions where co-exposure occurs from the
L. Sørensen, Emilie Rogers, D. Altin, I. Salaberria, A. Booth   +4 more
semanticscholar   +1 more source

Cardiovascular Risk Factors Among Young Ischemic Stroke Patients Admitted at a Tertiary Care Hospital: An Observational Study

Journal of Nepal Medical Association
Introduction: Stroke in young adults (aged 15-49 years) is an increasingly recognized public health concern in both developed and developing nations. While traditional stroke occurs predominantly in older populations, the incidence in younger age groups
Suman Thapa, Aashish Shrestha, Miraj KC, Pradeep Shrestha, Sanjit Karki, Amrit Rijal, Krishna Adhikari, Lucky Sharma   +7 more
doaj   +1 more source

Biotic and abiotic risks of soil biochar treatment for food safety and human health

Acta Universitatis Sapientiae: Alimentaria, 2020
Pyrolysis technology facilitates the heating of organic waste biomass in a very low oxygen environment to temperatures over 400 °C. The high carbon content and surface area of the char produced via slow pyrolysis makes it suitable for a range of purposes
Kocsis T., Pabar S. A., Ferschl B., Kotroczó Zs., Mohási-Farkas Cs., Biró B.   +5 more
doaj   +1 more source

PAHs in protoplanetary disks: emission and X-ray destruction [PDF]

, 2012
We study the PAH emission from protoplanetary disks. First, we discuss the dependence of the PAH band ratios on the hardness of the absorbed photons and the temperature of the stars.
Acke, Acke, Armitage, Asplund, Augereau, Baes, Bianchi, Bjorkman, Chase, Chiang, Compiegne, Doucet, Draine, Draine, Dullemond, Dwek, Ercolano, F. Heymann, Fleck, Galliano, Geers, Gordon, Guhathakurta, Habart, Hayashi, Heymann, Jayawardhana, Juvela, Keller, Krijt, Lagage, Lucy, Mathis, Mattioda, Mattioda, Min, Min, Miroshnichenko, Misselt, Peeters, Preibisch, R. Siebenmorgen, Robitaille, Robitaille, Salama, Schräpler, Schutte, Sellgren, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Siebenmorgen, Stelzer, Tielens, Uchida, van den Ancker, Vinkovic, Youdin, Zubko   +60 more
core   +1 more source

Evaluation of assays for screening polycyclic aromatic hydrocarbon-degrading potential of bacteria [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2020
Within a 30-day incubation laboratory study, the polycyclic aromatic hydrocarbon (PAH) degradation profile of two bacteria, Planomicrobium sp. RNP01 and Rhodococcus sp.
Lješević Marija, Milić Jelena, Gojgić-Cvijović Gordana, Šolević-Knudsen Tatjana, Ilić Mila, Avdalovic Jelena, Vrvić Miroslav M.   +6 more
doaj   +1 more source

Polycyclic aromatic hydrocarbons and molecular hydrogen in oxygen-rich planetary nebulae: the case of NGC6720

, 2015
Evolved stars are primary sources for the formation of polycyclic aromatic hydrocarbons (PAHs) and dust grains. Their circumstellar chemistry is usually designated as either oxygen-rich or carbon-rich, although dual-dust chemistry objects, whose infrared
Berne, O., Cernicharo, J., Cox, N. L. J., Joblin, C., Pilleri, P.   +4 more
core   +2 more sources

Highlighting the effects of co‐eluting interferences on compound specific stable isotope analysis of polycyclic aromatic hydrocarbons using comprehensive two‐dimensional gas chromatography [PDF]

, 2014
Accuracy is the most important issue when carrying out compound specific stable isotope analysis of polycyclic aromatic hydrocarbons extracted from complex samples.
Blessing, Buczyńska, Elsner, Gauchotte-Lindsay, Graham, Liu, Mansuy, Mazeas, McGregor, McGregor, McRae, Meier-Augenstein, Pashin, Philp, Philp, Saber, Steinbach   +16 more
core   +1 more source