Violation of the Ikeda sum rule and the self-consistency in the renormalized quasiparticle random phase approximation and the nuclear double-beta decay

The effect of the inclusion of ground state correlations into the QRPA equation of motion for the two-neutrino double beta ($\beta\beta_{2\nu}$) decay is carefully analyzed. The resulting model, called renormalized QRPA (RQRPA), does not collapse near the physical value of the nuclear force strength in the particle-particle channel, as happens with the ordinary QRPA. Still, the $\beta\beta_{2\nu}$ transition amplitude is only slightly less sensitive on this parameter in the RQRPA than that in the plain QRPA. It is argued that this fact reveals once more that the characteristic behaviour of the $\beta\beta_{2\nu}$ transition amplitude within the QRPA is not an artifact of the model, but a consequence of the partial restoration of the spin-isospin $SU(4)$ symmetry. It is shown that the price paid for bypassing the collapse in the RQRPA is the violation of the Ikeda sum rule.Comment: 16 pages, latex, 3 postscript figure

Systemic Treatment of Metastatic Conjunctival Melanoma.

Conjunctival melanoma (CM) is an exceptionally rare tumor, with a propensity for local and distant recurrence, with the lungs, skin, liver, and brain being the most common sites of metastasis. Recent progress in systemic treatments, with checkpoint inhibitors and targeted therapies blocking BRAF and MEK, has redefined the standard of care of advanced unresectable and metastatic melanoma. Although most trials did not include patients with conjunctival melanoma, its close molecular and genetic relationship to cutaneous melanoma might suggest a similar response to these novel agents. The authors describe two uncommon cases of metastatic conjunctival melanomas with distinct genetic profiles and, as such, submitted to different systemic treatments.info:eu-repo/semantics/publishedVersio

Systemic Treatment of Metastatic Conjunctival Melanoma

Conjunctival melanoma (CM) is an exceptionally rare tumor, with a propensity for local and distant recurrence, with the lungs, skin, liver, and brain being the most common sites of metastasis. Recent progress in systemic treatments, with checkpoint inhibitors and targeted therapies blocking BRAF and MEK, has redefined the standard of care of advanced unresectable and metastatic melanoma. Although most trials did not include patients with conjunctival melanoma, its close molecular and genetic relationship to cutaneous melanoma might suggest a similar response to these novel agents. The authors describe two uncommon cases of metastatic conjunctival melanomas with distinct genetic profiles and, as such, submitted to different systemic treatments.info:eu-repo/semantics/publishedVersio

The mean energy, strength and width of triple giant dipole resonances

We investigate the mean energy, strength and width of the triple giant dipole resonance using sum rules.Comment: 12 page

Eficácia de endectocidas em infestações naturais por Cochliomyia hominivorax (Mosca-varejeira) em bezerros no Pantanal

Todos os endectocidas injetáveis testados reduzem significativamente a ocorrência de miíases umbilicais. Entretanto, por sua maior eficácia, o uso de produtos à base de doramectina é recomendável no manejo extensivo de bezerros recém-nascidos no Pantanal.bitstream/item/37464/1/CT90.pd

Time-Dependent Variational Analysis of Josephson Oscillations in a Two-component Bose-Einstein Condensate

The dynamics of Josephson-like oscillations between two coupled Bose-Einstein condensates is studied using the time-dependent variational method. We suppose that the quantum state of the condensates is a gaussian wave-packet which can translate and perform breathing shape oscillations. Under this hypotheses we study the influence of these degrees of freedom on the tunneling dynamics by comparing the full-model with one where these degrees of freedom are ``frozen'' at its equilibrium values. The result of our calculation shows that when the traps are not displaced the two models agree, whereas when they are, the models differ considerably, the former being now closer to its linear approximation.Comment: 10 pages, 2 figure

Avaliação de extratos vegetais na prevenção e tratamento de Miíases Umbilicais em bezerros no Pantanal.

Devido a características ambientais e de manejo (grandes propriedades, pastagens extensas, rebanhos numerosos, mão-de-obra deficitária, etc.), as miíases umbilicais figuram dentre os principais problemas sanitários de bezerros no Estado. Esta situação é substancialmente agravada no Pantanal devido a problemas de infraestrutura, dificuldade de acesso e de manejo, determinando expressivas perdas à pecuária da região.bitstream/CPAP-2010/57494/1/CT89.pd