Results 91 to 100 of about 98,718 (288)

AKARI near-infrared spectroscopy of the aromatic and aliphatic hydrocarbon emission features in the galactic superwind of M 82

, 2012
Aims. We investigate the properties of hydrocarbon grains in the galactic superwind of M 82. Methods. With AKARI, we performed near-infrared (2.5 - 4.5 um) spectroscopic observations of 34 regions in M 82 including its northern and southern halos ...
Alton, D. Ishihara, Duley, Engelbracht, Fukui, H. Kaneda, Hoopes, Kaneda, Kaneda, Karachentsev, Kwok, Leeuw, Lu, Lynds, M. Yamagishi, Mayya, Micelotta, Mori, Murakami, Ohyama, Ohyama, Onaka, Onaka, Roussel, Schutte, Shopbell, Smith, Strickland, Sturm, T. Kondo, T. Onaka, T. Suzuki, Tielens, Veilleux, Walter, Y. C. Minh, Yamagishi, Yoshida, Yun, Yun   +39 more
core   +1 more source

Formation of PAHs and Carbonaceous Solids in Gas-Phase Condensation Experiments [PDF]

, 2009
Carbonaceous grains represent a major component of cosmic dust. In order to understand their formation pathways, they have been prepared in the laboratory by gas-phase condensation reactions such as laser pyrolysis and laser ablation.
Allain, Baum, Boulanger, C. Jäger, Cao, Cherchneff, Cherchneff, Clayton, Draine, Drilling, F. Huisken, Foing, H. Mutschke, Hrivnak, I. Llamas Jansa, Jäger, Jäger, Jäger, Kwok, Kwok, Lederer, Lodders, Monier, Nuccitelli, Schnaiter, Sellgren, Th. Henning, Vijh   +27 more
core   +1 more source

Tuning the Twist by Molecular Design: A New Strategy for Hexabenzocoronene‐Containing Helical Twistacene

Chemistry – A European Journal, EarlyView.
An efficient Scholl–based strategy enables precise control of the C–C bond to access the first hexabenzocoronene–containing helical twistacene (NG2). The resulting nanographene shows pronounced helical distortion, high stability, enhanced solubility, and promising redox and optoelectronic properties.
Juan P. Mora‐Fuentes, Daniel Villar‐Castro, J. Francisco Barbosa‐de‐Bessa, Daniel Aranda, Frank Hampel, Dolores Pérez, M. Eugenia Pérez‐Ojeda, Diego Peña, Andreas Hirsch   +8 more
wiley   +1 more source

Bacteria-mediated PAH degradation in soil and sediment [PDF]

, 2011
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous in the natural environment and easily accumulate in soil and sediment due to their low solubility and high hydrophobicity, rendering them less available for biological degradation. However, microbial
Fang, HHP, Lu, XY, Zhang, T
core   +1 more source

Investigation of microalgal tolerance and growth in simulated tailings pond water containing naphthenic acids

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Oil sands tailings ponds, such as those in northeastern Alberta, present environmental challenges due to slow sedimentation, water entrapment, and toxic naphthenic acids (NAs), which hinder water reclamation. This study assessed the tolerance and biodegradation potential of Chlorella vulgaris (C.
Amin Kalbasi, Amarjeet Bassi
wiley   +1 more source

Strategies for producing biochars with minimum PAH contamination [PDF]

With the aim to develop initial recommendations for production of biochars with minimal contamination with polycyclic aromatic hydrocarbons (PAHs), we analysed a systematic set of 46 biochars produced under highly controlled pyrolysis conditions.
Buss, Wolfram, Graham, Margaret C., MacKinnon, Gillian, Mašek, Ondřej   +3 more
core   +1 more source

The Electronic Spin State of Diradicals Obtained from the Nuclear Perspective: The Strange Case of Chichibabin Radicals

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The electronic spin state of two Chichibabin radicals is investigated using 2‐dimensional hyperfine correlated Electron Nuclear Double Resonance. The protons (I=1/2) act as a reference for the electronic spin quantum number (S) via their hyperfine interactions.
Gabriel Moise, Saleta Fernández, Kit Joll, Mikhail V. Vaganov, Fátima García, Christiane R. Timmel, Diego Peña, Arzhang Ardavan   +7 more
wiley   +1 more source

Relationship between the molecular composition, visible light absorption, and health-related properties of smoldering woodsmoke aerosols [PDF]

, 2019
Organic aerosols generated from the smoldering combustion of wood critically impact air quality and health for billions of people worldwide; yet, the links between the chemical components and the optical or biological effects of woodsmoke aerosol (WSA ...
Denison, MS, He, G, Kam Chan, L, Karim, N, Nguyen, KQ, Nguyen, TB, Rice, RH, Yang, Y   +7 more
core  

Nanodust in the Interstellar Medium in Comparison to the Solar System

, 2012
Nanodust, which undergoes stochastic heating by single starlight photons in the interstellar medium, ranges from angstrom-sized large molecules containing tens to thousands of atoms (e.g.
Li, Aigen, Mann, Ingrid
core   +1 more source

Charge State Influence on Stability and Isomerism in Dehydrogenated PAHs: Insights from Anthracene, Acridine, and Phenazine

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida, Farouk Hamza Reguig, Manuel Alcamí, Al Mokhtar Lamsabhi   +3 more
wiley   +1 more source