Results 71 to 80 of about 846,262 (295)

Description of atomic excitations in heavy-ion reactions [PDF]

, 2006
Excitations of the atomic shell in heavy-ion collisions are influenced by the presence of a nuclear reaction. In the present Rapid Communication we point out the equivalence between a semiclassical description based on the nuclear autocorrelation ...
Greiner, Walter, Müller, Berndt, Müller, Udo, Reinhardt, Joachim   +3 more
core  

Precision Measurements of d(d,p)t and d(d,n)^3He Total Cross Sections at Big-Bang Nucleosynthesis Energies

, 2006
Recent Wilkinson Microwave Anisotropy Probe (WMAP) measurements have determined the baryon density of the Universe $\Omega_b$ with a precision of about 4%.
A. S. Ganeev, B. M. Fisher, C. R. Brune, D. S. Leonard, E. J. Ludwig, E. Vangioni-Flam, H. J. Karwowski, Y. Irie   +7 more
core   +1 more source

The effect of 12C + 12C rate uncertainties on s-process yields [PDF]

, 2010
The slow neutron capture process in massive stars (the weak s-process) produces most of the s-only isotopes in the mass region 60 < A < 90. The nuclear reaction rates used in simulations of this process have a profound effect on the final s-process ...
A Hungerford, C Fryer, Chieffi A, El Eid M F, F Herwig, F Timmes, G Magkotsios, G Rockefeller, Gallino R, Herwig F, Hoffman R D, Imbriani G, Kappeler F, M E Bennett, M Pignatari, M Wiescher, P Young, R Hirschi, S Diehl, The L S   +19 more
core   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Removing uncertainties from X-ray Busrt Models [PDF]

EPJ Web of Conferences
Two of the astrophysically important reactions for X-ray burst models are 24Mg(α, γ)28Si and 59Cu(p, γ)60Zn. However, since these models are sensitive to nuclear reaction rates, it is important to constrain them to reduce possible model uncertainties ...
Singh Nisha, Brune Carl, Voinov Alexander   +2 more
doaj   +1 more source

Analytical results connecting stellar structure parameters and extended reaction rates [PDF]

, 2011
Possible modification in the velocity distribution in the non-resonant reaction rates leads to an extended reaction rate probability integral. The closed form representation for these thermonuclear functions are used to obtain the stellar luminosity and ...
Haubold, H. J., Kumar, D.
core   +3 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Transitions To Door-way States And Nuclear Responses Against 2-body External Fields [PDF]

EPJ Web of Conferences
Nuclear microscopic structural models that treat two-body effective interactions self-consistently becomes available, one of which is second-random-phase-approximation (SRPA).
Minato Futoshi
doaj   +1 more source

SNR-calibrated Type Ia supernova models [PDF]

, 2019
Current Type Ia supernova (SN Ia) models can reproduce most visible+IR + UV observations. In the X-ray band, the determination of elemental abundance ratios in supernova remnants (SNRs) through their spectra has reached enough precision to constrain SN ...
Badenes Montoliu, Carles, Bravo Guil, Eduardo, Martinez Rodriguez, Hector   +2 more
core   +2 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source