Results 81 to 90 of about 9,110 (204)

Mellitic Acid as a Stable Abiotic Precursor for Liquid‐Liquid Phase Separation: An RNA‐Independent Pathway for Prebiotic Compartmentalization

Chemistry – A European Journal, Volume 31, Issue 52, September 16, 2025.
Evidence is presented that prebiotically accessible mellitic (benzenehexacarboxylic) acid (MAc) is forming liquid droplets with short poly‐L‐lysine. The capacity of MAc to induce liquid‐liquid phase separation with short oligocations, along with abiotic synthesis routes, makes MAc a viable candidate for an ingredient of early prebiotic membraneless ...
Robert Dec, Michel W Jaworek, Matylda Wacławska, Wojciech Dzwolak, Roland Winter   +4 more
wiley   +1 more source

Fire from Ice - Massive Star Birth from Infrared Dark Clouds

, 2017
I review massive star formation in our Galaxy, focusing on initial conditions in Infrared Dark Clouds (IRDCs), including the search for massive pre-stellar cores (PSCs), and modeling of later stages of massive protostars, i.e., hot molecular cores (HMCs).
Tan, Jonathan C.
core   +1 more source

Ion Source Complementarity for Characterization of Complex Organic Mixtures Using Fourier Transform Mass Spectrometry: A Review

Mass Spectrometry Reviews, Volume 44, Issue 5, Page 808-829, September/October 2025.
ABSTRACT Complex organic mixtures are found in many areas of research, such as energy, environment, health, planetology, and cultural heritage, to name but a few. However, due to their complex chemical composition, which holds an extensive potential of information at the molecular level, their molecular characterization is challenging.
Charlotte Mase, Maxime Sueur, Hélène Lavanant, Christopher Paul Rüger, Pierre Giusti, Carlos Afonso   +5 more
wiley   +1 more source

Accurate rate coefficients for models of interstellar gas-grain chemistry

, 2009
The methodology for modeling grain-surface chemistry has been greatly improved by taking into account the grain size and fluctuation effects. However, the reaction rate coefficients currently used in all practical models of gas-grain chemistry are ...
Barzel, Biham, Biham, Biham, Caselli, Chang, Charnley, Cuppen, Garrod, Green, Hasegawa, Herbst, Hollenbach, I. Lohmar, J. Krug, Katz, Krug, Lederhendler, Lipshtat, Lohmar, Lohmar, O. Biham, Stantcheva, Stantcheva, Stantcheva, Tielens   +25 more
core   +1 more source

The Genuine Carbene Conundrum

Chemistry – A European Journal, Volume 31, Issue 44, August 7, 2025.
From fleeting intermediates to well‐defined molecular structures, carbenes (neutral divalent carbon) remind us that the most reactive ideas often make a large impact. Despite their wide‐ranging applications, the direct characterization of these reactive species remains a persistent experimental challenge.
Bethany Sawyer, Jesse. L. Peltier, Rodolphe Jazzar   +2 more
wiley   +1 more source

Infrared spectroscopy of the ν3 band of C3 in helium droplets

AIP Advances, 2018
The C3 molecule is an important species known to participate in key chemical reactions in combustion and astrochemistry. Its occurrence in environments of interest, its intramolecular physics, and its intermolecular reactivity have been areas of ...
Barbara A. Harruff-Miller, Christopher E. Bunker, William K. Lewis   +2 more
doaj   +1 more source

Dark-matter halo mergers as a fertile environment for low-mass Population III star formation

, 2014
While Population III stars are typically thought to be massive, pathways towards lower-mass Pop III stars may exist when the cooling of the gas is particularly enhanced. A possible route is enhanced HD cooling during the merging of dark-matter halos. The
Bovino, S., Grassi, T., Latif, M. A., Schleicher, D. R. G.   +3 more
core   +1 more source

Neutrals Ejected From Io's Plasma/Atmosphere Interaction Region by Physical Chemistry Processes

Journal of Geophysical Research: Space Physics, Volume 130, Issue 8, August 2025.
Abstract Neutrals ejected from Io's atmosphere are the source of many important structures of the jovian magnetosphere: they feed giant neutral clouds, which extend along Io's orbit and nebulae, which extend beyond 500 jovian radii. The neutral loss rate is casually claimed to be ∼1 ton/s, but the processes leading to this loss, their quantitative ...
V. Dols
wiley   +1 more source

Structure-based evaluation of Annona muricata bioactives for anticancer drug discovery: quantum chemical, molecular docking, and ADMET studies

Discover Applied Sciences
Cancer remains a leading cause of mortality worldwide, necessitating the discovery of novel therapeutic agents with improved efficacy and safety profiles.
H. S. Samuel, J. Dennis, D. Alahira, B. Bako, A. M. Abakpa, E. E. Etim, J. P. Shinggu   +6 more
doaj   +1 more source

Infrared Band Strengths and Other Properties of Three Interstellar Compounds—Amorphous Isocyanic Acid, Formaldehyde, and Formic Acid

The Astrophysical Journal
Infrared (IR) spectral features of interstellar and solar system ices have been attributed to solid organic and inorganic compounds for over 50 yr, but in many cases the laboratory IR data needed to fully quantify such work have never been published ...
Reggie L. Hudson, Yukiko Y. Yarnall, Perry A. Gerakines   +2 more
doaj   +1 more source