Results 41 to 50 of about 5,813,135 (253)

Structural phase transition and dielectric relaxation in Pb(Zn1/3Nb2/3)O3 single crystals [PDF]

open access: yes, 2005
The structure and the dielectric properties of Pb(Zn1/3Nb2/3)O3 (PZN) crystal have been investigated by means of high-resolution synchrotron x-ray diffraction (with an x-ray energy of 32 keV) and dielectric spectroscopy (in the frequency range 100 Hz–1 ...
Bokov, A.A.   +9 more
core   +2 more sources

Electroweak Phase Transitions [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 2000
5 pages, Talk given at 17th International Symposium on Lattice Field Theory (LATTICE 99), Pisa, Italy, 29 Jun - 3 Jul ...
openaire   +2 more sources

Solid Pseudopapillary Neoplasm of the Pancreas in Children and Adolescents: Expert Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Solid pseudopapillary neoplasm of the pancreas (SPN) is a rare low‐grade malignant exocrine pancreatic tumor, mostly discovered during the second decade of life in females, with a very good prognosis, provided microscopically complete surgical excision is achieved.
Sabine Irtan   +18 more
wiley   +1 more source

Displacive To Order-Disorder Two-Step Phase Transition Model For Para-Ferroelectric Transition

open access: yes, 2009
Two-step phase transition model, displacive to order-disorder, is proposed. The driving forces for these two transitions are fundamentally different. The displacive phase transition is one type of the structural phase transitions.
Sun ZW(孙祉伟)   +3 more
core   +1 more source

Bifurcations of transition states : morse bifurcations [PDF]

open access: yes, 2014
A transition state for a Hamiltonian system is a closed, invariant, oriented, codimension-2 submanifold of an energy level that can be spanned by two compact codimension-1 surfaces of unidirectional flux whose union, called a dividing surface, locally ...
MacKay, Robert S., Strub, Dayal C.
core   +1 more source

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan   +3 more
wiley   +1 more source

Phase transitions in the diagonal ensemble of two-band Chern insulators

open access: yesNew Journal of Physics, 2016
We identify a new class of phase transitions when calculating the Hall conductance of two-band Chern insulators in the long-time limit after a global quench of the Hamiltonian.
Pei Wang, Stefan Kehrein
doaj   +1 more source

Reentrant phase transition of Born–Infeld-dilaton black holes

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We explore a novel reentrant phase transition of four-dimensional Born–Infeld-dilaton black hole in which the first order phase transition modify into a zeroth order phase transition below the critical point.
Seyed Hossein Hendi, Mehrab Momennia
doaj   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo   +9 more
wiley   +1 more source

Phase transitions at preheating [PDF]

open access: yesPhysics Letters B, 1996
Some statements are corrected. Also, comments of the referee of Phys. Lett.
openaire   +2 more sources

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