Results 51 to 60 of about 13,614,081 (295)

Thermal properties of $$^{97}$$Mo and $$^{90}$$Y nuclei using temperature dependent level density parameter

open access: yes, 2023
Nuclear level density and level density parameter are important quantities in nuclear physics. Level density parameter is calculated through different methods.
V. Dehghani, S. A. Alavi, Kh. Benam
core   +1 more source

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

Nuclear level density and the determination of thermonuclear rates for astrophysics [PDF]

open access: yesPhysical Review C, 1997
12 pages, 4 Postcript figures, uses memsait.sty; preprint also available at http://quasar.physik.unibas.ch/ .
Rauscher, T.   +2 more
openaire   +3 more sources

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Nuclear level density of 69Zn from gamma gated particle spectrum and its implication on 68Zn(n, γ)69Zn capture cross section

open access: yesPhysics Letters B, 2020
Evaporated α-spectra have been measured in coincidence with low energy discrete γ-rays from residual nucleus 68Zn populated by αn evaporation from compound nucleus 73Ge produced in the reaction 64Ni(9Be,αn)68Zn at E(9Be) = 30 MeV.
Rajkumar Santra   +14 more
doaj   +1 more source

Determination of nuclear level densities from experimental information [PDF]

open access: yesPhysical Review C, 1994
A novel Information Theory based method for determining the density of states from prior information is presented. The energy dependence of the density of states is determined from the observed number of states per energy interval and model calculations suggest that the method is sufficiently reliable to calculate the thermal properties of nuclei over ...
Cole, B. J.   +2 more
openaire   +3 more sources

Calculation of nuclear level density from an equation of state

open access: yes, 1985
The nuclear level density (U,I) is derived from an equation of state, without reference to the Fermi gas model. If the yrast line backbends, then the effective level density parameter aeff must be spin dependent at low temperatures.
Draayer, Jerry P.   +2 more
core   +1 more source

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

STUDY OF NUCLEAR LEVEL DENSITY AND SPIN CUT-OFF FACTORS [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1999
Nuclear level densities and spin cut-off factors have been deduced for nuclei in the mass region 24‹A‹63,from a microscopic theory, which includes nuclear pairing interaction. Single particle levels for both Seeger and Nilsson potentials were used in the
doaj  

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