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Cancer cells maintain a high level of aerobic glycolysis (the Warburg effect), which is associated with their rapid proliferation. Many studies have reported that the suppression of glycolysis and activation of oxidative phosphorylation can…

Tissues and Organs · Quantitative Biology 2013-03-12 Zhitong Bing , Bin Ao , Yanan Zhang , Fengling Wang , Caiyong Ye , Jinpeng He , Jintu Sun , Jie Xiong , Nan Ding , Xiao-fei Gao , Ji Qi , Sheng Zhang , Guangming Zhou , Lei Yang

The reactivity of water vapor introduced in the flowing post-discharge of an RF atmospheric plasma torch is investigated through electrical characterization, optical emission spectroscopy and mass spectrometry measurements. Due to the…

Plasma Physics · Physics 2016-09-19 S Collette , Thierry Dufour , F Reniers

The thermochemistry of H2 and HD in non-collapsed, non-reionized primordial gas up to the end of the dark age is investigated with recent radiation-matter and chemical reaction rates taking into account the efficient coolant HD, and the…

Astrophysics · Physics 2009-11-07 D. Pfenniger , D. Puy

The formation of $\mbox{O}_2$ by radiative association and by inverse predissociation of ground state oxygen atoms is studied using quantum-mechanical methods. Cross sections, emission spectra, and rate coefficients are presented and…

chem-ph · Physics 2008-02-03 J. F. Babb , A. Dalgarno

Understanding the formation of molecules under conditions relevant to interstellar chemistry is fundamental to characterize the chemical evolution of the universe. Using reactive molecular dynamics simulations with model-based or…

Chemical Physics · Physics 2021-06-16 Meenu Upadhyay , Marco Pezzella , Markus Meuwly

Isolated attosecond pulses (IAPs) produced through laser-driven high-harmonic generation (HHG) hold promise for unprecedented insight into biological processes via attosecond x-ray diffraction with tabletop sources. However, efficient…

Complex organic molecules (COMs) have been identified toward high- and low-mass protostars as well as molecular clouds, suggesting that these interstellar species originate from the early stage(s) of starformation. The reaction pathways…

Solar and Stellar Astrophysics · Physics 2020-04-08 K. -J. Chuang , G. Fedoseev , D. Qasim , S. Ioppolo , C. Jäger , Th. Henning , M. E. Palumbo , E. F. van Dishoeck , H. Linnartz

Low-energy cosmic rays ($E\lesssim 1$ GeV) are responsible for the ionisation and heating of molecular clouds. While the role of supra-thermal electrons produced in the ionisation process in inducing excitation of the ambient gas (mostly…

High Energy Astrophysical Phenomena · Physics 2025-12-02 Marco Padovani , Daniele Galli , Corey T. Plowman , Liam H. Scarlett , Mark C. Zammit , Igor Bray , Dmitry V. Fursa

A new, more comprehensive model of gas-grain chemistry in hot molecular cores is presented, in which nondiffusive reaction processes on dust-grain surfaces and in ice mantles are implemented alongside traditional diffusive surface/bulk-ice…

Astrophysics of Galaxies · Physics 2022-02-23 Robin T. Garrod , Mihwa Jin , Kayla A. Matis , Dylan Jones , Eric R. Willis , Eric Herbst

The Herschel Space Observatory's recent detections of water vapor in the cold, dense cloud L1544 allow a direct comparison between observations and chemical models for oxygen species in conditions just before star formation. We explain a…

Astrophysics of Galaxies · Physics 2015-06-18 Eric Keto , Jonathan Rawlings , Paola Caselli

Cold atmospheric pressure plasmas are crucial for applications in medicine, agriculture, and material processing, where their interaction with ambient air generates reactive oxygen and nitrogen species for disinfection and treatment…

Plasma Physics · Physics 2025-03-27 Muhammad Rizwan Akram , Abbas Semnani

We report the creation of a confined slow beam of heavy-water (D2O) molecules with a translational temperature around 1 kelvin. This is achieved by filtering slow D2O from a thermal ensemble with inhomogeneous static electric fields…

Chemical Physics · Physics 2009-11-11 T. Rieger , T. Junglen , S. A. Rangwala , G. Rempe , P. W. H. Pinkse , J. Bulthuis

We know little about the outermost portions of galaxies because there is little light coming from them. We do know that in many cases atomic hydrogen (HI) extends well beyond the optical radius \cite{Casertano91}. In the centers of…

Astrophysics · Physics 2009-11-10 Jonathan Braine , Fabrice Herpin

The plasma composition of the solar corona is different from that of the solar photosphere. Elements that have a low first ionisation potential (FIP) are preferentially transported to the corona and, therefore, show enhanced abundances in…

We have developed a model for molecular hydrogen formation under astrophysically relevant conditions. This model takes fully into account the presence of both physisorbed and chemisorbed sites on the surface, allows quantum mechanical…

Astrophysics · Physics 2009-11-07 S. Cazaux , A. G. G. M. Tielens

The formation of interstellar water has been commonly accepted to occur on the surfaces of icy dust grains in dark molecular clouds at low temperatures (10-20 K), involving hydrogenation reactions of oxygen allotropes. As a result of the…

Astrophysics of Galaxies · Physics 2014-10-22 Thanja Lamberts , Herma Cuppen , Gleb Fedoseev , Sergio Ioppolo , Ko-Ju Chuang , Harold Linnartz

Carbon Dioxide (CO2) is one of the most important greenhouse gases after water vapor (H2O) which plays significant role in the climate process. Accurate space-based measurement of CO2 is of great significance in inferring the location of…

Atmospheric and Oceanic Physics · Physics 2016-12-13 Naif Alsalem , Rehan Siddiqui , Catherine Tsouvaltsidis , Brendan Quine

The present study experimentally demonstrated that solid H2O is formed through the surface reaction OH + H2 at 10 K. This is the first experimental evidence of solid H2O formation using hydrogen in its molecular form at temperatures as low…

Astrophysics of Galaxies · Physics 2012-03-29 Y. Oba , N. Watanabe , T. Hama , K. Kuwahata , H. Hidaka , A. Kouchi

Propane steam reforming using a sliding discharge reactor was investigated under atmospheric pressure and low temperature (420 K). Non-thermal plasma steam reforming proceeded efficiently and hydrogen was formed as a main product (H2…

Plasma Physics · Physics 2009-02-26 Fakhreddine Ouni , Ahmed Khacef , Jean Marie Cormier

During the embedded stage of star formation, bipolar molecular outflows and UV radiation from the protostar are important feedback processes. Our aim is to quantify the feedback, mechanical and radiative, for a large sample of low-mass…