Results 41 to 50 of about 444 (134)

Ab Initio Investigation of MgXe, Its Cation Mg+Xe and Clusters Mg+Xen: Electronic Structure, Spectroscopic Properties, and Temperature‐Dependent Absorption Spectra

open access: yesInternational Journal of Quantum Chemistry, Volume 126, Issue 13, July 5, 2026.
Accurate potential energy curves, spectroscopic constants, and transition dipole moments were determined for the Mg+Xe and MgXe complexes. Spin–orbit effects were explicitly included for the Mg+Xe ionic system. Monte Carlo simulations were employed to investigate Mg+Xen clusters, and the temperature dependence of their absorption spectra was analyzed ...
M. Bejaoui   +4 more
wiley   +1 more source

El Cometa 32P

open access: yesActes d'Història de la Ciència i de la Tècnica : IX Trobada d'Història de la Ciència i de la Tècnica : Girona, 16-19 de novembre de 2006, 2008
Josep Comas Solà, a Catalan astronomer, discovered the periodic comet 32P in 1926, this is why it’s called 32P/Comas Solà. Since then in its successive returns to the Sun it was observed before and after perihelion passage and its orbit calculated. We present a study of these results to explain the history and the evolution of this comet.
Cadefau Surroca, Trinidad   +1 more
openaire   +2 more sources

Level structure of 32P from 31P(d, p)32P reactions [PDF]

open access: yesNuclear Physics, 1962
Abstract States up to an excitation energy of 6.8 MeV of the nucleus 32 P are investigated by studying the angular distribution of protons in the reaction 31 P(d, p) 32 P. One new state is found at 1.51 MeV. A state previously reported at 6.56 MeV is found to be a doublet with excitation energies 6.58 MeV and 6.53 MeV. The angular distributions for
openaire   +2 more sources

Semi-Automated PCR Method for Quantitating MDR1 Expression

open access: yesBioTechniques, 1996
The MDR1 gene is involved in drug resistance in many hematopoietic and solid tumors. The Quantitative PCR System 5000TM (QPCR-5000; Perkin-Elmer) is a new instrument system that uses electrochemiluminescence to automatically quantitate polymerase chain ...
S. Zhao   +5 more
doaj   +1 more source

Naturally Occurring CodY Variants Alter Ligand Binding, DNA Target Affinity, and Virulence in Clostridioides difficile

open access: yesMolecular Microbiology, Volume 126, Issue 1, Page 98-110, July 2026.
Single amino acid substitutions in the global regulator CodY can alter nutrient sensing and virulence regulation in Clostridioides difficile. We show that the CodY(Y146N) and CodY(V58A) variants display altered ligand binding and reduced promoter binding, leading to derepression of toxin regulatory pathways and increased virulence in vivo.
Md Kamrul Hasan   +2 more
wiley   +1 more source

The Uptake of 32P by Brown Planthoppers (Nilaparvata Lugens Stal) Gonads

open access: yesJournal of Mathematical and Fundamental Sciences, 2019
. The radioisotop 32P has been used quite extensively in the field of insect ecology and insect physiology. It has been widely known that 32P is one of the several isotopes applied to tag the insects for migration studies, to estimate the sap uptake or ...
S. Sastrodihardjo, R.A. Wahid
doaj  

Cinética do fósforo em tecidos de ovinos em crescimento alimentados com diferentes fontes de cálcio Kinetics of phosphorus in tissues of lambs fed different sources of calcium

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2007
Foram utilizados 12 cordeiros machos, inteiros, com peso médio de 31,6kg. Os cordeiros foram alimentados com dietas à base de milho e farelo de soja, suplementadas com diferentes fontes de cálcio: calcário calcítico (CC), feno de alfafa (FA), polpa ...
R.S. Dias   +4 more
doaj   +1 more source

Structural Basis for Nucleobase Activation by the Adenine DNA Glycosylase MutY

open access: yesChemBioChem, Volume 27, Issue 11, 15 June 2026.
DNA glycosylase MutY engages its adenine nucleobase substrate in a syn orientation with a catalytic Glu. X‐ray crystal structures of MutY with Glu replaced suggest that a disengaged “on hold” state with anti nucleobase orientation may explain how MutY avoids catastrophic activity at inappropriate adenines.
L. Peyton Russelburg   +4 more
wiley   +1 more source

Stimulation by serum of 32P incorporation into the phospholipids of Ehrlich ascites cells

open access: yesJournal of Lipid Research, 1977
Ehrlich ascites cells adapted for suspension culture were incubated with 32PO43- in a Krebs-Ringer-HEPES (N-2-hydroxyethyl-piperazine-N'-2-ethanesulfonate) buffer with or without 5% calf serum.
P B Schneider
doaj   +1 more source

Chemical State of Radioactive Phosphorus (32P) [PDF]

open access: yesNature, 1949
NUCLEAR reactions initiated by heavy nucleons involve the transfer of considerable energy from the incident particle to the target nucleus. The amount of energy carried off by the recoiling nucleus is generally sufficient to break chemical bonds, or in irradiated crystalline substances to move the atom to a new site in the lattice.
openaire   +2 more sources

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