Results 61 to 70 of about 2,475,342 (218)
The Astrophysical JournalMassive 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 +9 more
doaj +1 more source
Mass Spectrometry Insights Into Post‐Translational Modifications in Extracellular Vesicles
Mass Spectrometry Reviews, EarlyView.ABSTRACT Extracellular vesicles (EVs) are membrane‐enclosed structures secreted by virtually all living cells, serving as essential mediators of intercellular communication in both physiological and pathological processes. There is growing interest in their potential applications as biomarkers, therapeutic targets, and drug delivery systems, which ...
Dávid Virág +5 more
wiley +1 more source
Grain Dynamics in Photodissociation Regions
, 1998 We discuss the forces on grains exposed to anisotropic radiation fields, including the usual ``radiation pressure'' force and also recoil forces due to photoemitted electrons, photodesorbed hydrogen atoms, and hydrogen molecules which form on the grain surface.
Weingartner, Joseph C., Draine, Bruce T.
openaire +2 more sources
Infrared Spectroscopy and Photochemistry of Aromatic Nitriles in Para-hydrogen Matrices
The Astrophysical JournalMotivated by recent detections of several aromatic nitriles in Taurus Molecular Cloud 1, we report laboratory and theoretical investigations of the vibrational spectroscopy and photochemistry of singly and doubly cyanosubstituted benzene in solid para ...
Sam McGrath +8 more
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Proteoforms in Disease: Biomedical Applications of Top‐Down Proteomics
Mass Spectrometry Reviews, EarlyView.ABSTRACT The proteome is a dynamic landscape of proteoforms arising from genetic mutations, alternative splicing, and post‐translational modifications (PTMs), which collectively drive biological function and disease phenotypes. Mass spectrometry (MS)‐based proteomics has emerged as an essential technique for elucidating this molecular complexity ...
Holden T. Rogers +5 more
wiley +1 more source
Photodissociation Regions and Planetary Nebulae [PDF]
Symposium - International Astronomical Union, 1993 FUV photons (<13.6eV) from the central star create a region of warm (≈1000K) atomic and molecular gas around Planetary Nebulae (PN). This paper reviews theoretical and observational characteristics of such regions, commonly called photodissociation regions or PDRs.
openaire +1 more source
Photodissociation dynamics of ketene at 157.6 nm
, 2006 Photodissociation dynamics of ketene at 157.6 nm has been investigated using the photofragment translational spectroscopic technique based on photoionization detection using vacuum-ultraviolet synchrotron radiation.
Yang, XM +4 more
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The Astrophysical JournalMolecular clouds (MCs) are the birthplaces of new stars in galaxies. A key component of MCs are photodissociation regions (PDRs), where far-ultraviolet radiation plays a crucial role in determining the gas’s physical and chemical state.
Shmuel Bialy +11 more
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Mass Spectrometry Reviews, EarlyView.ABSTRACT Identification of a chemical agent yields insights into its physicochemical properties. By examining the intrinsic characteristics and environment of a compound, information about its history can be gathered. The main objective of authentication/forensic approaches to chemicals is to trace the history of the compound's origin, regardless of ...
Carla Orlandi +6 more
wiley +1 more source
Physical conditions in photodissociation regions: Application to galactic nuclei [PDF]
, 1990 Infrared and sub-millimeter observations are used in a simple procedure to determine average physical properties of the neutral interstellar medium in Galactic photodissociation regions as well as in ensembles of clouds which exist in the nuclei of ...
Tielens, A. G. G. M. +2 more
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