Higher order effects in the 16O(d,p)17O^{16}O(d,p)^{17}O and 16O(d,n)17F^{16}O(d,n)^{17}F transfer reactions

Full Coupled Channels Calculations were performed for the $^{16}O(d,n)^{17}F$ and $^{16}O(d,p)^{17}O$ transfer reactions at several deuteron incident energies from $E_{lab}=2.29$ MeV up to 3.27 MeV. A strong polarization effect between the entrance channel and the transfer channels $^{16}O(d,n)^{17}F(1/2^{+},0.495)$ and $^{16}O(d,p)^{17}O(1/2^{+},0.87)$ was observed. This polarization effect had to be taken into account in order to obtain realistic spectroscopic factors from these reactions.Comment: 15 papes, 13 figures, accepted for publication in Phys. Rev.

Análise de lignina com diferentes massas de tegumento de soja utilizando método gravimétrico.

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Efeitos salinos no crescimento e desenvolvimento do arroz: alterações fisiológicas.

Com o objetivo de avaliar os efeitos do NaCl sobre o desenvolvimento vegetativo de plantas de arroz (Oryza sativa L.) (cultivar IAC 25, um experimento foi conduzido em casa de vegetação no Centro de Ciências Agrárias da Universidade Federal do Ceará, em Fortaleza, CE. Sob os potenciais osmóticos de 0,0, -0,4, -0,8 e -1,2 MPa de NaCl, foram avaliados o peso da matéria seca da parte aérea e da raiz, o peso da matéria seca total, a relação raiz/parte aérea, o volume e o comprimento das raízes, o número de perfilhos por planta e transpiração/ planta/dia. O aumento da concentração salina provocou reduções significativas no peso da matéria seca da parte aérea. O comprimento e o volume das raízes foram reduzidos significativamente com o aumento do teor de NaCl na solução nutritiva. O número de perfilhos/planta, mesmo sendo uma característica genética, sofreu redução significativa com o aumento da concentração de NaCl. O aumento do nível salino reduziu o volume de água transpirado, principalmente nos tratamentos com potenciais osmóticos de -0,4 MPa. A salinização do meio de cultivo provocou envelhecimento precoce nas plantas de arroz

The Symposium on Search-Based Software Engineering: Past, Present and Future

CONTEXT: Search-Based Software Engineering (SBSE) is the research field where Software Engineering (SE) problems are modelled as search problems to be solved by search-based techniques. The Symposium on Search Based Software Engineering (SSBSE) is the premier event on SBSE, which had its 11th edition in 2019. OBJECTIVE: In order to better understand the characteristics and evolution of papers published at SSBSE, this work reports results from a mapping study targeting the proceedings of all SSBSE editions. Despite the existing mapping studies on SBSE, our contribution in this work is to provide information to researchers and practitioners willing to enter the SBSE field, being a source of information to strengthen the symposium, guide new studies, and motivate new collaboration among research groups. METHOD: A systematic mapping study was conducted with a set of four research questions, in which 134 studies published in all editions of SSBSE, dated from 2009 to 2019, were evaluated. In a fifth question, 32 papers published in the challenge track were summarised. RESULTS: Throughout the years, 290 authors from 25 countries have contributed to the main track of the symposium, with the collaboration of at least two institutions in 46.3% of the papers. SSBSE papers have got substantial external visibility, as most citations are from different venues. The SE tasks addressed by SSBSE are mostly related to software testing, software debugging, software design, and maintenance. Evolutionary algorithms are present in 75% of the papers, being the most common search technique. The evaluation of the SBSE approaches usually includes industrial systems. CONCLUSIONS: SSBSE has helped increase the popularity of SBSE in the SE research community and has played an important role on making SBSE mature. There are still problems and challenges to be addressed in the SBSE field, which can be tackled by SSBSE authors in further studies

Parecença entre linhagens e cultivares introduzidas de arroz irrigado utilizando o método de Ward.

O objetivo do trabalho foi caracterizar a parecença entre 72 acessos de linhagens e cultivares introduzidas (LCI) de sistema de cultivo irrigado da CNAE, por meio da técnica de Ward de agrupamento. Os dados foram obtidos a partir de onze experimentos para caracterização agronômica da CNAE

A strategy to increase and assess vaccine coverage in the north of Portugal

In the Northern Health Region of Portugal, vaccine coverage is measured by checking and studying individual vaccination records in health centres. Each year from 2001-2004, birth cohorts who were over 2, 6 and 14 years of age were selected for assessment. Data collection occurred on January the following year and meetings with district immunisation coordinators took place every March. For all vaccines and birth cohorts considered, vaccine coverage values observed in the north of Portugal were excellent. In this paper, we make comparisons with published international data on vaccine coverage and discuss validity issues; we believe that no serious biases have affected the validity of our vaccine coverage data but comparisons with international data must be addressed with caution; the methods we used have been useful in increasing vaccination coverage

REVE 2021: 9th International Workshop on Reverse Variability Engineering

Software Product Line (SPL) migration remains a challenging endeavour. From organizational issues to purely technical challenges, there is a wide range of barriers that complicates SPL adoption. This workshop aims to foster research about making the most of the two main inputs for SPL migration: 1) domain knowledge and 2) legacy assets. Domain knowledge, usually implicit and spread across an organization, is key to define the SPL scope and to validate the variability model and its semantics. At the technical level, domain expertise is also needed to create or extract the reusable software components. Legacy assets can be, for instance, similar product variants (e.g., requirements, models, source code, etc.) that were implemented using ad-hoc reuse techniques such as clone-and-own. More generally, the workshop REverse Variability Engineering attracts researchers and practitioners contributing to processes, techniques, tools, or empirical studies related to the automatic, semi-automatic or manual extraction or refinement of SPL assets

Aluminum and Sulphate Removal by a Highly Al-Resistant Dissimilatory Sulphate-Reducing Bacteria Community

A highly Al-resistant dissimilatory sulphatereducing bacteria community was isolated from sludge of the wetland of Urgeiriça mine (community W). This community showed excellent sulphate removal at the presence of Al3+. After 27 days of incubation, 73,86 and 81% of sulphate was removed in the presence of 0.48, 0.90 and 1.30 mM of Al3+, respectively. Moreover,Al3+ was simultaneously removed: 55,85 and 78% of metal was removed in the presence of 0.48, 0.90 and 1.30 mM of Al3+, respectively. The dissociation of aluminiumlactate soluble complexes due to lactate consumption by dissimilatory sulphate-reducing bacteria can be responsible for aluminum removal, which probably precipitates as insoluble aluminium hydroxide. Phylogenetic analysis of 16S rRNA gene showed that this community was mainly composed by bacteria closely related to Desulfovibrio desulfuricans. However, bacteria affiliated to Proteus and Ralstonia were also present in the community