Results 51 to 60 of about 13,910 (212)

Quantitative Top–Down Proteomics Reveals Significant Differences in Histone Proteoforms Between Metastatic and Nonmetastatic Colorectal Cancer Cells

PROTEOMICS, EarlyView.
ABSTRACT Colorectal cancer (CRC) development is closely associated with the accumulation of both genetic and epigenetic alterations. Many efforts have been made to investigate the role of epigenetic modifications in CRC metastasis. In this work, we present the quantitative top‐down proteomics study focusing on histone proteoforms between metastatic ...
Fei Fang, Brian Fries, Zhige Wang, Xiaowen Liu, Amanda B. Hummon, Liangliang Sun   +5 more
wiley   +1 more source

Enhancing Lipidomics With High‐Resolution Ion Mobility‐Mass Spectrometry

PROTEOMICS, EarlyView.
ABSTRACT Lipids, indispensable yet structurally intricate biomolecules, serve as critical regulators of cellular function and disease progression. Conventional lipidomics, constrained by limited resolution for isomeric and low‐abundance species, has been transformed by ion mobility‐mass spectrometry (IM‐MS).
Gaoyuan Lu, Shuling Xu, Penghsuan Huang, Lingjun Li   +3 more
wiley   +1 more source

PHOTODISSOCIATION OF CN

The Astrophysical Journal, 2013
CN rovibrational photodissociation cross sections have been computed using ab initio derived potential curves and dipole transition moment functions adjusted to match asymptotic experimental constraints where available. Here, we report results for the electronic transitions {sup 2}Σ{sup +}(4) ← X {sup 2}Σ{sup +}, {sup 2}Σ{sup +}(5) ← X {sup 2}Σ{sup +},
W. el-Qadi, Phillip C. Stancil
openaire   +2 more sources

Electron Transfer Dissociation and Synchrotron UV Photodissociation of Trapped Sodiated Ions Produced From Polyacrylates by Electrospray Ionization

Rapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Poly (acrylates)s can be distinguished from one another by the nature of their side chains. From model poly (acrylates)s, the purpose of this work was to evaluate the contribution of alternative activation techniques to the collisional activation, based on ion–ion and ion–photon interactions.
Inès Aloui, Véronique Legros, Cédric Przybylski, Matthieu Bourderioux, Alexandre Giuliani, William Buchmann   +5 more
wiley   +1 more source

The radiative association of PO/PH+ and the photodissociation of PH+

Frontiers in Astronomy and Space Sciences
The potential energy curves (PECs) and transition dipole moments (TDMs) of PH+ and PO are computed with the multireference configuration interaction method, and the cross-sections for the radiative association (RA) of PH+ and PO, which is the most ...
Yang Chen, Xiaohe Lin, Lidan Xiao, Zijian Li, Songbin Zhang, Yongjun Cheng, Yong Wu, Bing Yan   +7 more
doaj   +1 more source

Spectroscopic analysis of bacterial photoreactivation

Photochemistry and Photobiology, Volume 101, Issue 2, Page 494-504, March/April 2025.
This study investigates the effectiveness of fluorescence and Raman spectroscopy in detecting bacterial photoreactivation. Fluorescence spectroscopy shows limitations, because the intense fluorescence of tryptophan and tyrosine masks fluorescence emitted by thymine molecules.
Keyvan Khosh Abady, Negar Karpourazar, Arjun Krishnamoorthi, Runze Li, Peter M. Rentzepis   +4 more
wiley   +1 more source

High-precision spectroscopy of ultracold molecules in an optical lattice

New Journal of Physics, 2015
The study of ultracold molecules tightly trapped in an optical lattice can expand the frontier of precision measurement and spectroscopy, and provide a deeper insight into molecular and fundamental physics.
B H McGuyer, M McDonald, G Z Iwata, M G Tarallo, A T Grier, F Apfelbeck, T Zelevinsky   +6 more
doaj   +1 more source

Photodissociation of interstellar N₂ [PDF]

Astronomy & Astrophysics, 2013
Molecular nitrogen is one of the key species in the chemistry of interstellar clouds and protoplanetary disks and the partitioning of nitrogen between N and N2 controls the formation of more complex prebiotic nitrogen-containing species. The aim of this work is to gain a better understanding of the interstellar N2 photodissociation processes based on ...
Wim Ubachs, Xiaohu Li, Brenton Lewis, Stephen Gibson, Ruud Visser, A. N. Heays, A. N. Heays, A. N. Heays, E. F. van Dishoeck   +8 more
openaire   +6 more sources

Oxychlorine Species on Mars: A Review

Reviews of Geophysics, Volume 63, Issue 4, December 2025.
Abstract Oxychlorine species (mainly perchlorate and chlorate) have been identified at multiple locations on the surface of Mars by both orbiter and in situ rovers. They have also been found in martian meteorites. Cl‐isotopes in meteoritic minerals suggest that an oxychlorine cycle has been operating on the martian surface for the last ∼4 billion years.
Kaushik Mitra
wiley   +1 more source

Photodissociation Dynamics of DNA Bases [PDF]

Journal of Biological Physics, 2003
In order to access the damaging mechanismsof DNA and its bases on themolecular level by T Hz radiation, it isnecessary to create a database of assessingdamage at different spectral regions.Possible damage by T Hz radiation will beassessed by comparison.
Sarantopoulou, Evangelia, Kollia, Zoe, Cefalas, Alciviadis Constantinos, Kobe, S., Samardzija, Z.   +4 more
openaire   +4 more sources