A schematic model for the direct cross-section in reactions induced by exotic and stable projectiles

A geometric model for the direct contribution of the reaction cross section induced by light ions on different targets is presented. The model separates the total reaction cross section into two components, one for total fusion and another for direct reactions. We show that the direct part scales as $2 \pi Ra$, where $R$ is related to the nuclear radius and $a$ is the width of a ring, which is related to the nuclear diffuseness. A simple expression is presented to calculate the radius $R$ and the width parameter $a$ in terms of the masses and charges of the system. The method is applied to experimental data of exotic, weakly bound, and strongly bound projectiles on several targets. Different diffuseness parameters were obtained for different types of projectiles: exotic n-rich, stable weakly bound, stable strongly bound and exotic p-rich exotic projectiles.Comment: 10 pages, 4 figures, 2 table

Arqueologia de Transição: O Mundo Funerário

Apresentam-se os resultados da primeira campanha de escavações efetuada no sítio da Torre Velha (Castro de Avelãs, Bragança), durante o verão de 2012, referentes ao seu espaço funerário. A análise será feita de forma integrada, articulando os (novos) dados de natureza arqueológica (cronologia, contexto estratigráfico e materiais associados) e antropológica (antropologia funerária e estudo paleobiológico da amostra exumada), a par de uma breve contextualização histórica do sítio – um dos mais referidos na bibliografia arqueológica de Trásos- Montes, identificado habitualmente como a capital dos Zoelas em época romana. No domínio antropológico serão caracterizados 19 indivíduos, bem como três ossários (um dos quais associado a um enterramento) e duas reduções, ambas com apenas um indivíduo. Os esqueletos recuperados representam quatro não adultos, um adulto jovem e 16 adultos. Destes últimos, seis pertencem ao sexo feminino, sete ao masculino, sendo que em quatro este parâmetro não pôde ser avaliado.Here we present the results of the first campaign of excavations made in the archaeological site of Torre Velha (Castro de Avelãs , Bragança) , during the summer of 2012, in its funerary space. The analysis will be done in an integrated way, articulating the (new) archaeological data (chronology, stratigraphic context and associated material) and anthropological (paleobiological study of the burials and funerary anthropology), along with a brief historical background of the site - one the most reported in the archaeological literature of Trás-os- Montes, usually identified as the capital of the people “Zoela” in Roman times. In the anthropological study, will be characterized 19 individuals and three ossuaries (one associated to a burial). The skeletons recovered represent four children, a young adult and 16 adults. In the group of the adults we have six females, seven males and four individuals that were impossible to determinate the sex

Two-neutron transfer in 7 Be + 9 Be collisions

Elastic scattering and transfer cross sections for the 7 Be + 9 Be system have been measured at E lab = 23.1 MeV using the 7 Be radioactive secondary beam produced at Radioactive Ion Beams in Brazil facility at the University of São Paulo. The elastic scattering has been measured by detecting the 7 Be scattered at forward angles in the laboratory system. The transfer reaction 9 Be ( 7 Be , 9 Be ) 7 Be was identified by detecting the 9 Be scattered at the same laboratory angles. The elastic angular distribution has been analyzed by optical model calculations using a Woods-Saxon form factor whose parameters have been varied to best reproduce the experimental data at forward angles. Coupled reaction channels calculations (CRC) have been performed to describe the transfer, considering the coupling to the transfer channel and including contributions to the ground state and to the first excited state of 7 Be ( 1 / 2 − ; 429 keV ) in the final state. The spectroscopic amplitudes used in the CRC calculation have been derived from shell-model calculations. Similar CRC calculations were applied to existing 9 Be ( p , t ) 7 Be data to check the consistency of our results results for the ( 7 Be , 9 Be ) transfer reaction.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) de Brasil, Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) de Brasil y Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) de Brasil. 2013/22100-7 y 2016/21434-

Evidence of the effect of strong stripping channels on the dynamics of the 8 Li + 58Ni reaction

The 8 Li + 58Ni collision is investigated at 23.9, 26.1, 28.7, and 30 MeV bombarding energies. Quasielastic angular distributions and the singles 7 Li angular and energy distributions are presented. Coupled-reaction channels (CRC) calculations, which include the coupling of the elastic channel to 59Ni = 58Ni + n states above and below the neutron threshold, provide a simultaneous description of the quasielastic and transfer distributions and evidence the strong effect of the one-neutron transfer/breakup channels on the quasielastic scattering. The 7 Li angular and energy distributions have been also successfully analyzed combining the continuum discretized coupled channels (CDCC) method, for the elastic breakup, and the IAV model of Ichimura, Austern, and Vincent [Phys. Rev. C 32, 431 (1985)], for the nonelastic breakup. These calculations indicate that most of the 7 Li yields are due to nonelastic breakup contributions (transfer), whereas elastic breakup plays a minor role.Fundação de Amparo à Pesquisa do Estado de São Paulo, FAPESP (Brazil), Contratos No. 2019/02759-0, No. 2019/07767-1, No. 2016/17612-7 y No. 2013/22100-7Coordenação de Aperfeiçoamento de Pessoal de Nével Superior, Brasil (CAPES), código de financiación: 88887.355019/2019Ministerio de Ciencia, Innovación y Universidades de España. proyecto No. FIS2017-88410-PFondo Europeo de Desarrollo Regional (FEDER)Programa Horizon 2020 de la Unión Europea No. 65400

Spin-orbit effects in the 8Li+58Ni elastic scattering

In this work we present an elastic scattering angular distribution for the 8Li+58Ni system measured at Elab = 26.1 MeV. The 8Li beam was produced in the Radioactive Ion Beams in Brasil (RIBRAS) facility using the 7Li primary beam delivered by the 8-UD Pelletron accelerator. The angular distribution covers the angular range from 20 to 85 degrees in the center of mass frame. The data have been analysed by optical model and coupled channels calculations, including couplings to low-lying states in 8Li and the spin-orbit interaction. Our results indicate that the inclusion of the spin-orbit interaction in the calculations is important to describe the data at backward angles.Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior (CAPES) y Funda¸c˜ao de Amparo `a Pesquisa do Estado de S˜ao Paulo (FAPESP)013/22100-7 y 2016/17612-7Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior de Brasil (CAPES) y Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-013/22100-7 y 2016/17612-

Are there differences in auscultatory pulse in total blood flow restriction between positions, limbs and body segments?

Verification of the auscultatory pulse in total blood flow restriction (BFR) has been a limiting factor in studies due to the way in which it is evaluated and prescribed, as hemodynamic measurements can be directly affected by gravity. The aim of the present study was to compare the auscultatory pulse in BFR between positions, genders, limbs and body segments in healthy young individuals. A total of 156 subjects participated in the study, 76 of whom were male and 80 of whom were female (23.9±3.7 years, 66.5±11.5 kg, 1.67±0.07 m). After filling in registration data, anthropometry was evaluated, and BFR pressure was determined. BFR was evaluated in a randomized manner in both limbs (upper and lower) and in both segments (right and left) in the following positions: a) lying in the supine position; B) sitting with knees and trunk at 90°; and c) standing in the anatomical position. Significant differences were observed between the lying, sitting and standing positions (p0.05). The BFR point appears to differ between positions, genders, lower limbs and segments. Therefore, it is recommended that health professionals should check the BFR point in the position relating to the exercise that will be performed, taking into account gender, lower limbs and body segments

Isotopic investigation in the region of Pax Julia during paleochristian occupation: paleodiets and mobility

In this study, diet and mobility of the Palaeochristian populations from the Roman villae of São Cucufate and Cegonha, and from the necropolis of Alpendre dos Lagares, located in the Beja region in southern Portugal, was investigated by isotopic analysis. Osteological tissues provide information on diet and mobility of the individuals. Isotopic analysis of delta 13C and delta 15N of bones can be used to determine the food intake of ancient populations whose dietary habits are not well known due to the lack of archaeological evidence. Isotopic ratios of the bone organic (delta 13C and delta 15N) and inorganic fractions (delta 13C) can provide information on the types of plants ingested , the amount of animal resources, terrestrial versus marine resources, as well as breastfeeding and weaning practices. Individual mobility can be assessed by the measurement of 87Sr/86Sr in the inorganic fraction of teeth and bones. The local 87Sr/86Sr geological ignature where the individual spent its childhood is recorded in the teeth, while 87Sr/86Sr recorded in bones relates to the place where the individual spent the last 10 years before death. Comparison of the Sr isotopic signature of teeth and bones can be used to infer about the individual’s mobility pattern. Bone isotopic analysis can be compromised by the diagenetic processes which occur during burial. In this study, FTIR (Fourier Transformed Infrared Spectroscopy) and XRD (X-Ray Diffraction) analyses were used to assess the diagenetic processes impacting the skeletons. Dietary isotopic analysis of studied populations indicates a mixed terrestrial diet, with some small inter- and intra-populational variations. Dietary isotopic values obtained for the Paleochristian population of Pax Julia are roughly similar to Roman populations in the Mediterranean area. In terms of mobility, analysis of the Cegonha individuals proved they were mainly local with some evidence of limited movements

Comparative study of the stability of bimatoprost 0.03% and latanoprost 0.005%: A patient-use study

<p>Abstract</p> <p>Background</p> <p>The stability of ophthalmic preparations in multidose containers is influenced by the preservative as well as the stability of the active ingredient. Unstable drugs may require refrigeration to preserve their active ingredient level and they are more likely to degrade over time, therefore becoming more susceptible to degradation based on patient mishandling. The purpose of this study was to determine the degree of molecular degradation that occurs in bimatoprost and latanoprost in a patient-use setting.</p> <p>Methods</p> <p>This was an open-label, laboratory evaluation of the relative stability of bimatoprost and latanoprost. Patients presently using bimatoprost (n = 31) or latanoprost (n = 34) were identified at 2 clinical sites in Brazil. Patients were instructed to use and store their drops as usual and return all used medication bottles between day 28 and day 34 after opening.</p> <p>Results</p> <p>Bimatoprost demonstrated no degradation, but latanoprost degraded at various levels. The mean age of bimatoprost was 43.0 ± 3.4 days and the mean age of latanoprost was 43.9 ± 2.8 days (P = .072). The mean percentage of labeled concentration was 103.7% in the bimatoprost bottles and 88.1% in the latanoprost bottles (P < 001).</p> <p>Conclusion</p> <p>This study showed that bimatoprost maintained ≥100% concentration throughout the study period while latanoprost did not.</p

A 1000-year-old case of Klinefelter's syndrome diagnosed by integrating morphology, osteology, and genetics

We thank the Municipality of Bragança, the University of Coimbra, the University of Adelaide, the Max Planck Society, and the Calouste Gulbenkian Foundation for the support provided. ST is supported by the Fundação para a Ciência e a Tecnologia (SFRH/BD/116363/2016). BL (FT170100448) and JCT (DE210101235) are supported by the Australian Research Council. ABR is supported by the European Research Council (771234-PALEoRIDER)