The evolution of the nucleus, the defining feature of eukaryotic cells, was long shrouded in speculation and mystery. There is now strong evidence that nuclear pore complexes (NPCs) and nuclear membranes coevolved with the endomembrane system, and that the last eukaryotic common ancestor (LECA) had fully functional NPCs. Recent studies have identified many components of the nuclear envelope in ...

Quantum algebras are a mathematical tool which provides us with a class of symmetries wider than that of Lie algebras, which are contained in the former as a special case. After a self-contained introduction to the necessary mathematical tools (q-numbers, q-analysis, q-oscillators, q-algebras), the suq(2) rotator model and its extensions, the construction of deformed exactly soluble models (Int...

This paper discusses and evaluates different approaches to the nuclear stress (NS) algorithm in light of the variability in stress pattern observed for certain constructions in German and English in wide focus contexts (“unmarked” stress patterns), in opposition to the rigid (right-most) nature of NS in Spanish/Italian. The paper also briefly discusses the case of nuclear stress in narrow focus...

The goal of nuclear structure theory is to build a comprehensive microscopic framework in which properties of nuclei and extended nuclear matter, and nuclear reactions and decays can all be consistently described. Due to novel theoretical concepts, breakthroughs in the experimentation with rare isotopes, increased exchange of ideas across different research areas, and the progress in computer t...

Modern nuclear structure theory is rapidly evolving towards regions of exotic shortlived nuclei far from stability, nuclear astrophysics applications, and bridging the gap between low-energy QCD and the phenomenology of finite nuclei. The principal objective is to build a consistent microscopic theoretical framework that will provide a unified description of bulk properties, nuclear excitations...

P. Chowdhury, * B.A. Brown, U. Garg, & R. D. McKeown, ~ T. P. Sjoreen, **and D. B. Fossan Department ofPhysics, State University ofNew York, Stony Brook, New York 11794 {Received 1 July 1985) The high-spin leve1 structures of the nuclei 9' 7Ru have been studied via the Mo{ Li,p2n)9'Ru and Nb{ Li,3n) Ru reactions, using y-y coincidence, y-8'{6I), and pulsed-beam-y measurements. Shell-model calcu...

It is shown that nucleonic structure functions are x− and Q 2 −rescaled in nuclei. The x−rescaling accounts for nuclear effects in the case of exact scaling, while the Q 2 −rescaling is responsible for a corresponding modification of quantum corrections. This result is obtained in the leading order for all flavour combinations and connects the two known models for the EMC-effect. Electroproduct...

The properties of nuclear matter are studied in the framework of quantum hadrodynamics. Assuming an o-meson field, periodic in space, a self-consistent set of equations is derived in the mean-field approximation for the description of nucleons interacting via U-meson and w-meson fields. Solutions of these self-consistent equations have been found: The baryon density is constant in space, howeve...

Nuclear structure at the highest spins is very likely to involve both collective and single-particle aspects. The liquid-drop model favors shapes that imply combinations of collective (rotational) and rotation-aligned single-particle angular momenta. The detailed band structures for the full range of such mixtures are considered. Nuc le i are composed o f a smal l ( b u t n o t t o o sma l l ) ...