An important area in neuropsychological assessment is that of psychological and behavioural symptoms. The Cambridge Behavioural Inventory (CBI) is a self-report measure aimed at relatives which takes ...account of a wide range of behavioural symptoms that may occur during the course of neurological diseases. The main objective of the study is to test the clinical usefulness of its Spanish adaptation.
The CBI was completed by 215 members of kin of patients referred from neurology and psychiatry services. The CBI profiles of four groups of patients were compared, these being grouped according to their main clinical characteristics, psychometric data, imaging tests and the clinical judgement of the professional requesting the neuropsychological study.
Most of the scales (10 out of 13) of the CBI yielded acceptable internal consistency values, and the memory and attention/orientation scales showed high correlations with objective measures of memory and time orientation. The CBI profiles of the groups of patients with different conditions (organic memory disorder, functional memory disorder, behavioural variant of frontotemporal dementia and Alzheimer's disease) were consistent with their main features.
The CBI is a psychometrically reliable instrument with adequate convergent and discriminant validity that can be useful in the process of neuropsychological assessment. It can provide relevant information not only about cognitive functioning and the functional capabilities, but also about the behavioural and psychological symptoms of patients with cognitive disorders.
The Thermalization project is currently under way on the extracted proton beam of the U-70 accelerator at the Institute for High Energy Physics. The main goal of this experiment is to study the ...collective behavior of secondary particles produced in a multiparticle
pp
interaction at beam energy
E
= 50–70 GeV. The region of high charged-particle multiplicities
n
ch
≥ 10 is investigated. In this region, a significant portion of energy in the center-of-mass system is dissipated on production of secondary particles, which results in formation of a hadronic system. At the initial instant of evolution, the density of this system is high, which may be responsible for the collective behavior of the secondary particles. The investigations are performed at the SVD-2 wide-aperture magnetic spectrometer. A multichannel trigger scintillation hodoscope used to select rare events with a large number of charged particles exceeding the predetermined value is described. The main flow of low-multiplicity events is suppressed by the trigger system by a factor of ∼10
2
.
Experimental and theoretical studies of direct photon production in hadronic collisions essentially expand our insights in multiparticle production mechanisms. These photons are useful probes to ...investigate nuclear matter at all stages of the interaction. Soft photons play a particular role in these studies. Until now we have no explanation for the experimentally observed excess of soft photons. These photons have low transverse momenta GeV/c, . In this domain their yield exceeds the theoretical estimates by 5-8 times. The registration of soft photons at Nuclotron (LHEP, JINR) has been carried out by the electromagnetic calorimeter built by the SVD-2 Collaboration. Soft photon electromagnetic calorimeter was tested at U-70, IHEP (Protvino). For the first time the soft photon yield at interactions of 3.5A GeV/c per nucleon deuterium and lithium beams has been measured. The obtained energy spectra confirm the increased yield of soft photons with their energy less than 50MeV (in the laboratory system) in comparison with theoretical predictions and agree with previous experiments at high-energy interactions. It is planned to continue soft photon study at the future accelerator complex NICA with heavy-ion beams.
An extension of the QED 'return to resonance' mechanism to light meson emission (\(\pi\), \(\rho\)) in (anti)proton collisions with a hadronic target (nucleon or nucleus) is proposed. The cross ...section and the multiplicity distributions are calculated. The collinear emission (along the beam direction) of a charged meson may be used to produce high energy (anti)neutron beams. Possible applications at existing and planned facilities are considered.
Data from the SVD-2 experiment that were obtained at the IHEP accelerator in 70-GeV/c proton-nucleus interactions are analyzed with the aim of searches for an exotic {theta}{sup +} baryon that decays ...through the pK{sup 0}{sub S} channel. The reaction pN {yields} pK{sup 0}{sub S} + X characterized by a bounded multiplicity of charged secondaries is used for this analysis. A resonance of mass M = 1526 {+-} 3(stat.) {+-} 3(syst.) MeV/c{sup 2} and width {gamma} < 24 MeV/c{sup 2} is observed in the invariant-mass spectrum of the pK{sup 0}{sub S} system at a statistical significance of 5.6{sigma}. The mass and the width of this resonance correspond to the recently found positive-strangeness {theta}{sup +} baryon, which was predicted to be an exotic baryon consisting of five quarks (pentaquark), uudds-bar. The total cross section for the production of a {theta}{sup +} baryon in pA interactions is estimated at a value within the range 30-120 {mu}b for x{sub F} {>=} 0. An analysis of the A dependence of the cross section for {theta}{sup +}-baryon production does not reveal a significant deviation from the A dependence for inelastic events ({approx}A{sup 0.7})
.
Experimental and theoretical studies of direct photon production in hadronic collisions essentially expand our insights in multiparticle production mechanisms. These photons are useful probes to ...investigate nuclear matter at all stages of the interaction. Soft photons play a particular role in these studies. Until now we have no explanation for the experimentally observed excess of soft photons. These photons have low transverse momenta
GeV/
c
,
. In this domain their yield exceeds the theoretical estimates by 5-8 times. The registration of soft photons at Nuclotron (LHEP, JINR) has been carried out by the electromagnetic calorimeter built by the SVD-2 Collaboration. Soft photon electromagnetic calorimeter was tested at U-70, IHEP (Protvino). For the first time the soft photon yield at interactions of 3.5
A
GeV/
c
per nucleon deuterium and lithium beams has been measured. The obtained energy spectra confirm the increased yield of soft photons with their energy less than 50MeV (in the laboratory system) in comparison with theoretical predictions and agree with previous experiments at high-energy interactions. It is planned to continue soft photon study at the future accelerator complex NICA with heavy-ion beams.
A set of evolution equations for correlators of densities of quark and gluons is considered. Approximate solutions is obtained in frames of gluon and quark dominance. A new formulation of the cross ...sections of Drell-Yan process is suggested. Differential cross sections for the QCD sub-processes of type \(2 \to 2\) are obtained. Sub-process \(g b\to tH^-\) as well considered.
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