4,452 research outputs found
The quality of attractions and the satisfaction, benefits and behavioural intentions of visitors: verification of a model
The study is an attempt to verify a model of the relations between motivation, quality of attraction, benefits, satisfaction and the behavioural intentions of visitors to tourism attractions. The data for the analysis was collected from 582 visitors during the 10th Archaeological Festival at Biskupin. It was noted that the effect of the quality of the attraction on behavioural intentions leads to the benefits gained by the visitors. Benefits have a stronger total effect on behavioural intentions than visitor satisfaction
The isovector effective charge and the staggering of the 2+ to 0+ transition probabilities in the Titanium isotopes
In an effort to understand the magical status of N=32 and N=34 at the very
neutron rich edge, experiments have been carried out in the Titanium isotopes
up to A=56. The measured staggering of the B(E2)'s is not reproduced by the
shell model calculations using the best effective interactions. We argue that
this may be related to the choice of the isovector effective charge and to the
value of the N=34 neutron gap.Comment: 2 pages, 2 figure
Recommended from our members
Phyllobates terribilis
Number of Pages: 5Integrative BiologyGeological Science
Lifetimes of 26Al and 34Cl in an astrophysical plasma
We study here the onset of thermal equilibrium affecting the lifetimes of
26Al and 34Cl nuclei within a hot astrophysical photon gas. The 26Al isotope is
of prime interest for gamma ray astronomy with the observation of its delayed
(t_1\2=0.74 My) 1.809MeV gamma-ray line. Its nucleosynthesis is complicated by
the presence of a short lived (t_1\2=6.34s) spin isomer. A similar
configuration is found in 34Cl where the decay of its isomer (34mCl, t_1\2=32m)
is followed by delayed gamma-ray emission with characteristic energies. The
lifetimes of such nuclei are reduced at high temperature by the thermal
population of shorter lived levels. However, thermal equilibrium within 26Al
and 34Cl levels is delayed by the presence of the isomer. We study here the
transition to thermal equilibrium where branching ratios for radiative
transitions are needed in order to calculate lifetimes. Since some of these
very small branching ratios are not known experimentally, we use results of
shell model calculations.Comment: 11 pages, 5 figures, Latex, accepted for publication in Phys. Rev.
Zastosowanie metod fizjoterapii okołooperacyjnej w chirurgicznym leczeniu skolioz idiopatycznych – analiza najnowszych doniesień i piśmiennictwa
Introduction. The term of idiopathic scoliosis refers to a change (deformity) of uncertain etiology related to improper setting of the spine, of a lateral curvature greater than 10 degrees by Cobb classification, with a characteristic image of abnormalities of the spine-chest axis and the topographic-anatomical axis. Some of such changes, particularly those characterized by a significant degree of progression or specific indication are reffered for a surgical correction. The perioperative use of physiotherapy methods is now one of the most important factors of a complex surgical treatment.The aim of this study was to present the applicability of the methods in the field of physical therapy in the perioperative surgical treatment of idiopathic scoliosis.Material and methods. The paper presents an analysis of the literature from the years 2000-2012 in the field of spinal surgery in terms of correction of idiopathic scoliosis. Materials were selected according to information about the use of perioperative physiotherapy methods in preparing the patient for surgery, and postoperative rehabilitation.Results. There are many physical therapy preoperative methods used in spinal surgery to support the process of idiopathic scoliosis correction. In all of the analyzed scientific materials and available guidelines, it is demonstrated a significant positive effect of the different methods used in the perioperative physiotherapy Intracorrection and the possibility of long-term results obtained after surgery.Conclusions. The use of modern methods of perioperative physiotherapy in surgical treatment of idiopathic scoliosis should be an important element of a comprehensive procedure. Methods of physiotherapy should be performed at a specified time prior to surgery and after surgery to ensure adequate, positive clinical results.Wstęp. Termin skolioza idiopatyczna odnosi się do zmian o nieokreślonej etiologii dotyczących nieprawidłowego ustawienia kręgosłupa, o charakterze skrzywienia bocznego powyżej 10 stopni wg Cobba z charakterystycznym obrazem zaburzeń osi symetrii kręgosłup- klatka piersiowa, względem osi topograficzno-anatomicznych. Niektóre tego typu zmiany, szczególnie te cechujące się istotnym stopniem progresji i powyżej odnośnikowych punktów referencyjnych wg. poszczególnych skal oceny, stanowią istotne wskazanie do korekcji chirurgicznej. Wprowadzanie rehabilitacji okołooperacyjnej stanowi obecnie jeden z ważniejszych czynników kompleksowego leczenia zabiegowego.Celem pracy było przedstawienie możliwości stosowania metod z zakresu fizjoterapii okołooperacyjnej w chirurgicznym leczeniu skolioz idiopatycznych.Materiał i metody. W pracy dokonano analizy piśmiennictwa z lat 2000-2012 z zakresu chirurgii kręgosłupa w aspekcie korekcji skolioz idiopatycznych. Materiał dobierano pod kątem informacji z zakresu wykorzystania metod fizjoterapii okołooperacyjnej w przygotowaniu pacjenta do zabiegu i rehabilitacji pooperacyjnej.Wyniki. Istnieje obecnie wiele technik z zakresu fizjoterapii okołooperacyjnej, wspomagających zabiegową korekcji zmian klinicznych o charakterze skoliozy idiopatycznej. We wszystkich analizowanych przykładach przedstawiono dostępne wytyczne i wykazano istotny wpływ stosowana poszczególnych metod fizjoterapii okołooperacyjnej na śród zabiegową możliwość korekcji i uzyskiwane wyniki odległe po zabiegu.Wnioski. Stosowanie nowoczesnych metod fizjoterapii okołooperacyjnej w chirurgicznym leczeniu skolioz idiopatycznych powinno być podstawowym elementem kompleksowego postępowania. Metody fizjoterapeutyczne powinny być wprowadzane w ściśle określonym czasie przed zabiegiem i po zabiegu dla uzyskania odpowiednich, pozytywnych wyników klinicznych
The use of perioperative physiotherapy methods in surgical treatment of idiopathic scoliosis – an analysis of the latest reports and scientific literature
Introduction. The term of idiopathic scoliosis refers to a change (deformity) of uncertain etiology related to improper setting of the spine, of a lateral curvature greater than 10 degrees by Cobb classification, with a characteristic image of abnormalities of the spine-chest axis and the topographic-anatomical axis. Some of such changes, particularly those characterized by a significant degree of progression or specific indication are reffered for a surgical correction. The perioperative use of physiotherapy methods is now one of the most important factors of a complex surgical treatment. The aim of this study was to present the applicability of the methods in the field of physical therapy in the perioperative surgical treatment of idiopathic scoliosis. Material and methods. The paper presents an analysis of the literature from the years 2000-2012 in the field of spinal surgery in terms of correction of idiopathic scoliosis. Materials were selected according to information about the use of perioperative physiotherapy methods in preparing the patient for surgery, and postoperative rehabilitation. Results. There are many physical therapy preoperative methods used in spinal surgery to support the process of idiopathic scoliosis correction. In all of the analyzed scientific materials and available guidelines, it is demonstrated a significant positive effect of the different methods used in the perioperative physiotherapy Intracorrection and the possibility of long-term results obtained after surgery. Conclusions. The use of modern methods of perioperative physiotherapy in surgical treatment of idiopathic scoliosis should be an important element of a comprehensive procedure. Methods of physiotherapy should be performed at a specified time prior to surgery and after surgery to ensure adequate, positive clinical results.Wstęp. Termin skolioza idiopatyczna odnosi się do zmian o nieokreślonej etiologii dotyczących nieprawidłowego ustawienia kręgosłupa, o charakterze skrzywienia bocznego powyżej 10 stopni wg Cobba z charakterystycznym obrazem zaburzeń osi symetrii kręgosłup- klatka piersiowa, względem osi topograficzno-anatomicznych. Niektóre tego typu zmiany, szczególnie te cechujące się istotnym stopniem progresji i powyżej odnośnikowych punktów referencyjnych wg. poszczególnych skal oceny, stanowią istotne wskazanie do korekcji chirurgicznej. Wprowadzanie rehabilitacji okołooperacyjnej stanowi obecnie jeden z ważniejszych czynników kompleksowego leczenia zabiegowego. Celem pracy było przedstawienie możliwości stosowania metod z zakresu fizjoterapii okołooperacyjnej w chirurgicznym leczeniu skolioz idiopatycznych. Materiał i metody. W pracy dokonano analizy piśmiennictwa z lat 2000-2012 z zakresu chirurgii kręgosłupa w aspekcie korekcji skolioz idiopatycznych. Materiał dobierano pod kątem informacji z zakresu wykorzystania metod fizjoterapii okołooperacyjnej w przygotowaniu pacjenta do zabiegu i rehabilitacji pooperacyjnej. Wyniki. Istnieje obecnie wiele technik z zakresu fizjoterapii okołooperacyjnej, wspomagających zabiegową korekcji zmian klinicznych o charakterze skoliozy idiopatycznej. We wszystkich analizowanych przykładach przedstawiono dostępne wytyczne i wykazano istotny wpływ stosowana poszczególnych metod fizjoterapii okołooperacyjnej na śród zabiegową możliwość korekcji i uzyskiwane wyniki odległe po zabiegu. Wnioski. Stosowanie nowoczesnych metod fizjoterapii okołooperacyjnej w chirurgicznym leczeniu skolioz idiopatycznych powinno być podstawowym elementem kompleksowego postępowania. Metody fizjoterapeutyczne powinny być wprowadzane w ściśle określonym czasie przed zabiegiem i po zabiegu dla uzyskania odpowiednich, pozytywnych wyników klinicznych
Shape Coexistence in 78 Ni and the new Island of Inversion
Large Scale Shell Model calculations (SM-CI) predict that the region of
deformation which comprises the heaviest Chromium and Iron isotopes at and
beyond N=40 will merge with a new one at N=50 in an astonishing parallel to the
N=20 and N=28 case in the Neon and Magnesium isotopes. We propose a valence
space including the full pf-shell for the protons and the full sdg shell for
the neutrons; which represents a comeback of the the harmonic oscillator shells
in the very neutron rich regime. The onset of deformation is understood in the
framework of the algebraic SU3-like structures linked to quadrupole dominance.
Our calculations preserve the doubly magic nature of the ground state of 78 Ni,
which, however, exhibits a well deformed prolate band at low excitation energy,
providing a striking example of shape coexistence far from stability
The land of deformation south of Ni
We study the development of collectivity in the neutron-rich nuclei around
, where experimental and theoretical evidences suggest a rapid shape
change from the spherical to the rotational regime, in analogy to what happens
at the {\it island of inversion} surrounding Na. Theoretical
calculations are performed within the interacting shell model framework in a
large valence space, based on a Ca core which encompasses the full
shell for the protons and the , , ,
and orbits for the neutrons. The effective interaction is based on a
G-matrix obtained from a realistic nucleon-nucleon potential whose monopole
part is corrected empirically to produce effective single particle energies
compatible with the experimental data. We find a good agreement between the
theoretical results and the available experimental data. We predict the onset
of deformation at different neutron numbers for the various isotopic chains.
The maximum collectivity occurs in the chromium isotopes, where the large
deformation regime starts already at . The shell evolution responsible
for the observed shape changes is discussed in detail, in parallel to the
situation in the region
A Shell Model Description of the Decay Out of the Super-Deformed Band of 36Ar
Large scale shell model calculations in two major oscillator shells (sd and
pf) describe simultaneously the super-deformed excited band of 36Ar and its
low-lying states of dominant sd character. In addition, several two particle
two hole states and a side band of negative parity are also well reproduced. We
explain the appearance of the super-deformed band at such low excitation energy
as a consequence of the very large correlation energy of the configurations
with many particles and many holes (np-nh) relative to the normal filling of
the spherical mean field orbits (0p-0h). We study the mechanism of mixing
between these different configurations, to understand why the super-deformed
band survives and how it finally decays into the low-lying sd-dominated states
via the indirect mixing of the 0p-0h and 4p-4h configurations.Comment: 4 pages 5 figures, revtex4, revised version, minor change
- …