Results 61 to 70 of about 16,662 (218)

SOFIA FEEDBACK Survey: The Eagle Nebula in [C ii] and Molecular Lines

The Astrophysical Journal
We characterize the physical conditions and energy budget of the M16 H ii region using Stratospheric Observatory for Infrared Astronomy FEEDBACK observations of the [C ii ] 158 μ m line.
Ramsey L. Karim, Marc W. Pound, Alexander G.G.M. Tielens, Jelle S. Kaastra, Leisa K. Townsley, Patrick S. Broos, Maitraiyee Tiwari, Lars Bonne, Ümit Kavak, Mark G. Wolfire, Nicola Schneider, Robert Simon, Rolf Güsten, Jürgen Stutzki, Marc Mertens, Oliver Ricken, Friedrich Wyrowski, Lee G. Mundy   +17 more
doaj   +1 more source

Confined Hot Carrier Cooling Via Excited‐State Energy Gap Engineering in Graphyne Carbon Allotropes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The excited‐state energy gap (EEG), regulated by the concentration of sp‐hybridized carbon, provides an effective handle for tuning electron–phonon coupling behavior. This design enables long‐lived confinement of hot carriers near the top of the EEG with controllable energy levels.
Fulong Dai, Zhaozhao Xiong, Yingcong Liu, Feiyu Cheng, Haochun Sun, Zhenfa Zheng, Jin Zhao, Zhuojian Liang, Zhuo Kang, Yue Zhang   +9 more
wiley   +1 more source

Photodissociation and the Morphology of HI in Galaxies

, 2004
Young massive stars produce Far-UV photons which dissociate the molecular gas on the surfaces of their parent molecular clouds. Of the many dissociation products which result from this ``back-reaction'', atomic hydrogen \HI is one of the easiest to ...
A Sternberg, AN Witt, BG Elmegreen, DA Smith, DJ Hollenbach, DJ Hollenbach, EJ Shaya, GB Field, J-M Deharveng, JE Pringle, JM Shull, L Vigroux, MG Wolfire, MG Wolfire, MJ Kaufman, O Laurent, R Braun, R Braun, RJ Allen, RJ Allen, RJ Allen, RJ Allen, RJ Allen, SC Madden, TP Stecher   +24 more
core   +2 more sources

Microsecond time-resolved absorption spectroscopy used to study CO compounds of cytochrome bd from Escherichia coli. [PDF]

PLoS ONE, 2014
Cytochrome bd is a tri-heme (b558, b595, d) respiratory oxygen reductase that is found in many bacteria including pathogenic species. It couples the electron transfer from quinol to O2 with generation of an electrochemical proton gradient.
Sergey A Siletsky, Andrey A Zaspa, Robert K Poole, Vitaliy B Borisov   +3 more
doaj   +1 more source

Advancements in Mass Spectrometry‐Based Glycomics in Food and Nutritional Science

Mass Spectrometry Reviews, EarlyView.
ABSTRACT This review highlights advancements in mass spectrometry (MS)‐based glycomics in food and nutritional science. Carbohydrates, which are vital for human health, exhibit complex structures, making their analysis challenging. MS has become an indispensable tool for elucidating the structures of carbohydrates, including glycans, through soft ...
JaeHui Song, HyunJi Lee, Youngshik Choe, Hyeyoung Lee   +3 more
wiley   +1 more source

CN and HCN in Dense Interstellar Clouds

, 2005
We present a theoretical investigation of CN and HCN molecule formation in dense interstellar clouds. We study the gas-phase CN and HCN production efficiencies from the outer photon-dominated regions (PDRs) into the opaque cosmic-ray dominated cores.
Amiel Sternberg, Bachiller R., Bachiller R., de Boisanger C., Flower D. R., Fuente A., Gai I. Boger, Greaves J. S., Herbst E., Jansen D. J., Le Bourlot J., Le Bourlot J., Lee H.-H., Lindqvist M., Messing I., Pineau des Forets G., Schilke P., Simon R., Storzer H., Truong-Bach, Viala Y. P., Vikor L.   +21 more
core   +2 more sources

H_2 Absorption and Fluorescence for Gamma Ray Bursts in Molecular Clouds [PDF]

, 1999
If a gamma ray burst with strong UV emission occurs in a molecular cloud, there will be observable consequences resulting from excitation of the surrounding H2. The UV pulse from the GRB will pump H2 into vibrationally-excited levels which produce strong
Abgrall H, Abgrall H, B. T. Draine, Bottcher M., Habing H. J., Israel G. L., Jansen D. J., Rodgers C. D.   +7 more
core   +2 more sources

The SOMA Atomic Outflow Survey. I. An Atomic O I and Highly Ionized O III Outflow from Massive Protostar G11.94-00.62

The Astrophysical Journal
Massive stars regulate galaxy evolution and star formation through their physical and chemical feedback, but their formation remains poorly understood. Accretion-powered outflows provide important diagnostics of massive star formation.
Phillip Oakey, Yao-Lun Yang, Jonathan C. Tan, Thomas G. Bisbas, Rubén Fedriani, Kei E. I. Tanaka, Zoie Telkamp, Yichen Zhang, Christian Fischer, Lianis Reyes Rosa   +9 more
doaj   +1 more source

Exploring Stellar Cluster and Feedback-driven Star Formation in the Galactic Mid-infrared Bubble [HKS2019] E70

The Astrophysical Journal, 2023
We present a comprehensive analysis of the Galactic mid-infrared bubble [HKS2019] E70 (E70) by adopting a multiwavelength approach to understand the physical environment and star formation scenario around it.
Aayushi Verma, Saurabh Sharma, Kshitiz K. Mallick, Lokesh Dewangan, Devendra K. Ojha, Ram Kesh Yadav, Rakesh Pandey, Arpan Ghosh, Harmeen Kaur, Neelam Panwar, Tarak Chand   +10 more
doaj   +1 more source

Ion Activation Methods for Top‐Down Proteomics

Mass Spectrometry Reviews, EarlyView.
ABSTRACT Mass spectrometry (MS) has emerged as a premier method used to characterize the sequences of proteins. Top‐down proteomics aims to capture the multiple sources of structural diversity reflected in proteins, such as those that arise from alternative RNA splicing events or the addition of post‐translational modifications. Tandem MS (i.e., MS/MS)
Jada N. Walker, Jennifer S. Brodbelt
wiley   +1 more source