The InKiIsSy experiment at LNS: A study of size vs. isospin effects with 124Xe + 64Zn,64Ni reactions at 35 A MeV

In previous experiments, performed by CHIMERA Collaboration, a strong difference in the cross sections of “dynamical” PLF binary decay between neutron-poor 112Sn(35A MeV)+58Ni and neutron-rich 124Sn(35A MeV)+64Ni colliding systems has been reported. The same effect was not seen in the “statistical” binary decay. The observed difference was related to the different N/Z content between the two systems. However, size effects could not be excluded. In order to disentangle Isospin effects from size ones, the systems 124Xe(35A MeV)+64Zn(64Ni) were studied in the InKiIsSy (Inverse Kinematic Isobaric Systems) experiment, carried out at Laboratori Nazionali del Sud on April 2013, using the multi-detector CHIMERA and 4 prototype-modules of FARCOS array. We will report preliminary results on the binary PLF splitting mechanism

Extragonadal germ cell tumor presenting in a woman with systemic lupus erythematosus: a case report

<p>Abstract</p> <p>Introduction</p> <p>Germ cell tumor of the pituitary gland is a very rare occurrence.</p> <p>Case presentation</p> <p>We describe the case of a 28-year-old Malaysian Malay woman with lupus nephritis who complained of a three month headache and blurring of vision. She was found to have a pituitary mass, which was later proven to be a germ cell tumor. As of writing this case report, her disease is in remission.</p> <p>Conclusion</p> <p>The disruption of the pituitary gonad axis could affect the disease activity by reducing immunoregulatory control.</p

Test of GET Electronics for the CHIMERA and FARCOS multi-detectors

open30openDe Luca, S.; Acosta, L.; Auditore, L.; Boiano, C.; Cardella, G.; Castoldi, A.; D'Andrea, M.; De Filippo, E.; Dell'Aquila, D.; Fichera, F.; Gnoffo, B.; Guazzoni, C.; Lanzalone, G.; Lombardo, I.; Martorana, N. S.; Minniti, T.; Norella, S.; Pagano, A.; Pagano, E. V.; Papa, M.; Pirrone, S.; Politi, G.; Quattrocchi, L.; Rizzo, F.; Russotto, P.; Sacca', G.; Trifiro', A.; Trimarchi, M.; Verde, G.; Vigilante, M.De Luca, S.; Acosta, L.; Auditore, L.; Boiano, C.; Cardella, GIUSEPPE MICHELE OSVALDO; Castoldi, Andrea; D'Andrea, M.; De Filippo, E.; Dell'Aquila, D.; Fichera, F.; Gnoffo, B.; Guazzoni, Chiara; Lanzalone, G.; Lombardo, I.; Martorana, N. S.; Minniti, T.; Norella, S.; Pagano, A.; Pagano, E. V.; Papa, M.; Pirrone, S.; Politi, G.; Quattrocchi, L.; Rizzo, F.; Russotto, P.; Sacca', G.; Trifiro', A.; Trimarchi, M.; Verde, G.; Vigilante, M

High multiplicity α-particle breakup measurements to study α-condensate states

An experiment was performed to investigate α-condensate states via high α-particle multiplicity breakup. The nucleus of interest was 28Si therefore to measure multiplicity 7 particle breakup events, a highly granular detector with a high solid angle coverage was required. For this purpose, the CHIMERA and FARCOS detectors at INFN LNS were employed. Particle identification was achieved through ΔE-E energy loss. The α-particle multiplicity was measured at three beam energies to investigate different excitation regimes in 28Si. At a beam energy where the energy is sufficient to provide the 7 α-particles with enough energy to be identified using the ΔE-E method, multiplicity 7 events can be seen. Given these high multiplicity events, the particles can be reconstructed to investigate the breakup of α-condensate states. Analysing the decay paths of these states can elucidate whether the state of interest corresponds to a non-cluster, clustered or condensed state

Experimental investigation of α condensation in light nuclei

Background: Near-threshold α-clustered states in light nuclei have been postulated to have a structure consisting of a diffuse gas of α particles which condense into the 0s orbital. Experimental evidence for such a dramatic phase change in the structure of the nucleus has not yet been observed. Purpose: To understand the role of α condensation in light nuclei experimentally. Method: To examine signatures of this α condensation, a compound nucleus reaction using 160-, 280-, and 400-MeV 16O beams impinging on a carbon target was used to investigate the 12C(16O,7α) reaction. This permits a search for near-threshold states in the α-conjugate nuclei up to 24Mg. Results: Events up to an α-particle multiplicity of seven were measured and the results were compared to both an extended Hauser-Feshbach calculation and the Fermi breakup model. The measured multiplicity distribution exceeded that predicted from a sequential decay mechanism and had a better agreement with the multiparticle Fermi breakup model. Examination of how these 7α final states could be reconstructed to form 8Be and 12C(02+) showed a quantitative difference in which decay modes were dominant compared to the Fermi breakup model. No new states were observed in 16O, 20Ne, and 24Mg due to the effect of the N−α penetrability suppressing the total α-particle dissociation decay mode. Conclusion: The reaction mechanism for a high-energy compound nucleus reaction can only be described by a hybrid of sequential decay and multiparticle breakup. Highly α-clustered states were seen which did not originate from simple binary reaction processes. Direct investigations of near-threshold states in N−α systems are inherently impeded by the Coulomb barrier prohibiting the observation of states in the N−α decay channel. No evidence of a highly clustered 15.1-MeV state in 16O was observed from [28Si★,12C(02+)]16O(06+) when reconstructing the Hoyle state from three α particles. Therefore, no experimental signatures for α condensation were observed

Observation of an Excited Bc+ State

Using pp collision data corresponding to an integrated luminosity of 8.5 fb-1 recorded by the LHCb experiment at center-of-mass energies of s=7, 8, and 13 TeV, the observation of an excited Bc+ state in the Bc+π+π- invariant-mass spectrum is reported. The observed peak has a mass of 6841.2±0.6(stat)±0.1(syst)±0.8(Bc+) MeV/c2, where the last uncertainty is due to the limited knowledge of the Bc+ mass. It is consistent with expectations of the Bc∗(2S31)+ state reconstructed without the low-energy photon from the Bc∗(1S31)+→Bc+γ decay following Bc∗(2S31)+→Bc∗(1S31)+π+π-. A second state is seen with a global (local) statistical significance of 2.2σ (3.2σ) and a mass of 6872.1±1.3(stat)±0.1(syst)±0.8(Bc+) MeV/c2, and is consistent with the Bc(2S10)+ state. These mass measurements are the most precise to date

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ABSTRACT. Objective. To assess bone mineral density (BMD) changes in patients with systemic lupus erythematosus (SLE) undergoing longterm therapy with corticosteroids (CS) while taking calcium, calcitriol, or alendronate. The primary endpoint was BMD changes at 2 years. Methods. Premenopausal SLE patients were randomized into 3 groups according to medication: calcium carbonate 500 mg bd (calcium alone), calcitriol 0.25 µg bd plus calcium carbonate 500 mg bd (calcitriol + calcium), and alendronate 70 mg/week plus calcium carbonate 500 mg bd (alendronate + calcium). BMD was measured at baseline and at the end of the first and second years. Results. Ninety-eight patients were recruited. There were 33 patients taking calcium alone, 33 calcitriol + calcium, and 32 alendronate + calcium. On randomization, median duration of CS use was 2.5 years (range 0-20 yrs). Seventy-seven patients (78.6%) completed the study (23 taking calcium alone, 27 calcitriol + calcium, 27 alendronate + calcium). There were no significant differences in mean CS dosages among the 3 groups at the time of BMD measurements. After 2 years, there were no significant changes in BMD in the calcium-alone and calcitriol + calcium groups, apart from a 0.93% (p &lt; 0.001) reduction in total hip BMD in the calcium-alone group. In contrast, the alendronate + calcium group showed significant increases in BMD of 2.69% (p &lt; 0.001) in the lumbar spine and 1.41% (p &lt; 0.001) in total hip. Conclusion. Both calcium alone and calcitriol + calcium preserved lumbar spine BMD in premenopausal patients with SLE taking longterm CS at 2 years, whereas alendronate + calcium led to increases in BMD in lumbar spine and total hip. Premenopausal women taking CS should be considered for osteoporosis prophylaxis

Función del profesional en enfermería en la atención del acoso escolar en niños, niñas y adolescentes

Actualmente se ha incrementado y visualizado el fenómeno del acoso escolar o bullying(por su traducción al inglés); sin embargo, llama la atención que esta práctica ha&nbsp; existido durante mucho tiempo, pero es hasta ahora donde se evidencian las consecuencias que genera en los niños, niñas y adolescentes que, según diversos estudios, puede generar suicidios en esta población. Diversas profesiones han profundizado en el tema; a pesar de ello, no se ha visto avance en el manejo y prevención del acoso y se ha incrementado el número de casos que llegan a instituciones de salud relacionados con los daños físicos y psicológicos que se ocasionan en el niño víctima de acoso escolar. Es un reto para enfermería poder abordar esta situación y plantear posibles estrategias de intervención para su manejo y prevención, no solo en la víctima y victimario sino también en la familia, escuelas e instituciones de salud en los diferentes niveles de atención, ya que cuenta con las herramientas para diseñar intervenciones en el manejo de la comunidad y del paciente institucionalizado. &nbsp

A new method for the determination of very small Γ γ

We present a new method for the measurement of very small Γγ partial width that is important for the synthesis of elements in astrophysics. The method is based on the simultaneous detection of scattered beam, residual nucleus and decay γ rays. This method is optimized for the use of the CHIMERA detector at LNS. Experimental details are described