Results 61 to 70 of about 3,975,342 (333)

Entanglement entropy of $\alpha$-vacua in de Sitter space [PDF]

, 2014
We consider the entanglement entropy of a free massive scalar field in the one parameter family of $\alpha$-vacua in de Sitter space by using a method developed by Maldacena and Pimentel.
Kanno, Sugumi, Murugan, Jeff, Shock, Jonathan P., Soda, Jiro   +3 more
core   +2 more sources

Alpha-particle condensation in nuclei [PDF]

Comptes Rendus. Physique, 2003
A round up of the present status of the conjecture that nα nuclei form an α-particle condensate in excited states close to the nα threshold is given. Experiments which could demonstrate the condensate character are proposed. Possible lines of further theoretical developments are discussed.
P. Schuck, Y. Funaki, H. Horiuchi, G. Röpke, A. Tohsaki, T. Yamada   +5 more
openaire   +4 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

FEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani, Noemi E. Nwosu, Viktoria Gocke, Müge Kasanmascheff, Hannes Mutschler   +4 more
wiley   +1 more source

Discovery of Long-Lived Shape Isomeric States which Decay by Strongly Retarded High-Energy Particle Radioactivity

, 2000
The reaction 28Si + 181Ta has been studied at E(Lab) = 125 and 135 MeV. Coincidences between high energy particles and various X- and gamma-rays from abnormally long-lived states were observed. e.g.
A. MARINOV, D. KOLB, Kolb D., Marinov A., Marinov A., Marinov A., S. GELBERG, wiok S.   +7 more
core   +2 more sources

Unitarity of theories containing fractional powers of the d'Alembertian operator [PDF]

, 2014
We examine the unitarity of a class of generalized Maxwell U(1) gauge theories in (2+1) D containing the pseudodifferential operator $\Box^{1-\alpha}$, for $\alpha \in [0,1)$.
Alves, Van Sérgio, Marino, E. C., Nascimento, Leandro O., Smith, C. Morais   +3 more
core   +3 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

FEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Experimental observation of neutron-neutron correlations in nucleus 6He from 3H(α,pα)nn reaction

Ядерна фізика та енергетика, 2019
The projections of two-dimensional spectra of p-α coincidences from the four-particle reaction of 3H(α, pα)nn with the energy of alpha-particles 27.2 MeV on the energy axis of alpha-particles for six pairs of angles are analyzed. The results of the Monte
O. M. Povoroznyk, O. K. Gorpinich
doaj   +1 more source

Correlation functions and emission time sequence of light charged particles from projectile-like fragment source in E/A = 44 and 77 MeV 40Ar + 27Al collisions

, 2004
Two-particle correlation functions, involving protons, deuterons, tritons, and alpha-particles, have been measured at very forward angles (0.7 deg < theta_lab < 7 deg), in order to study projectile-like fragment (PLF) emission in E/A = 44 and 77 MeV 40Ar
A. Pagano, Angélique, Avdeichikov, Boal, Bougault, C. Beck, C. Volant, D. Mahboub, Dayras, Dayras, DeYoung, DeYoung, Dorvaux, E. De Filippo, E. Pollacco, Eudes, G. Lanzanò, G. Politi, Ghetti, Ghetti, Ghetti, Ghetti, Gourio, Hagel, Helgesson, Hodgson, J. Helgesson, J.L. Charvet, Koonin, Kopylov, Kotte, Lanzanò, Lanzanò, Lanzanò, Lanzanò, Lanzanò, Larochelle, Lecolley, Lednicky, M. Geraci, Pochodzalla, Péter, Péter, R. Dayras, R. Ghetti, R. Nouicer, Rivet, S. Aiello, S. Cavallaro, Schroder, Skulski, Tilley, Tilley, Verde, Zarbakhsh   +54 more
core   +3 more sources

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source