Optically Active Coordination Compounds. Part 50. 4-Fold Symmetry Axes in Optically Active Complex Ions from Natural Nicotine

The synthesis, characterization and circular dichroism under varied conditions (notably pR) of trans-dichloro-tetrakis-(S)-(-)- nicotiniumrhodium(III) salts are described, to illustrate the interplay of chirality of the metal ion (D4) and at carbon centres (C1)

GMP- RAM V1.1: Uma proposta de software como sistema de suporte à decisão para avaliação de risco de plantas geneticamente modificadas.

Um passo essencial no desenvolvimento de produtos baseados em plantas geneticamente modificadas (PGM) é a avaliação da sua segurança, incluindo a avaliação do seu impacto potencial, e das práticas relacionadas ao seu cultivo, no meio ambiente, na saúde humana e animal, de modo comparativo com variedades convencionais, sem a modificação genética. Apesar da importância da avaliação de risco, o GMP-RAM é a primeira ferramenta eletrônica de suporte à decisão para a avaliação do risco relacionado ao uso dos transgênicos. Comparado com a siatuação atual de análise dos transgênicos, o uso deste software pode resultar num processo menos subjetivo e mais transparente para a avaliação de risco como apoio a tomada de decisão

Role of production engineers in the public sector.

This paper aims to investigate the role of production engineers in the public sector. In the past, engineers used to be hired in the public sector only to work with technical issues in some departments. But nowadays, technical competency is not the only issue an engineer must have, and at the same time, there are some other approaches than technical ones that demand the presence of engineers in the government. In this scenario, production engineers rise as an important player on public affairs. It is explored in this paper the role of production engineers in public policies, technology and innovation issues, integration between technical and management approaches, and the holistic and systemic view that drives the career. This paper is constructed under some bibliographic information, as well as some empiric data and case studies. At the end of the work, one can conclude that as well as in the whole society, engineers? role in the public sector and government has been increasing and being crucial to build and sustain the competitiveness of the municipality / region / country and the effectiveness of the public services delivered to citizens

Influence of the external pressure on the quantum correlations of molecular magnets

The study of quantum correlations in solid state systems is a large avenue for research and their detection and manipulation are an actual challenge to overcome. In this context, we show by using first-principles calculations on the prototype material KNaCuSi$_{4}$O$_{10}$ that the degree of quantum correlations in this spin cluster system can be managed by external hydrostatic pressure. Our results open the doors for research in detection and manipulation of quantum correlations in magnetic systems with promising applications in quantum information science

Fertbrasil: an innovative network for the development of tropical soils fertilizers.

This paper aims to present the FertBrasil network, a network leaded by the Brazilian Agricultural Research Corporation ? Embrapa, that includes more than three hundreds of researchers in more than fifty institutions, among public agents, universities and private companies. First, we introduce the subject of network innovation and a little background on tropical fertilizers. Then, we present the FertBrasil network, since its creation, passing by its leadership, partners and the products the network intends to develop. After, a little is discussed about the innovative control mechanism of the network and the product development flow, as well as the interaction between FertBrasil and other governmental initiatives or public policies about the same subject. At least, we discuss about the results of the network until now, in terms of products, technologies and political impacts and mobilization in fertilizers research for tropical regions. Then, we conclude presenting some challenges for FertBrasil network as well as reinforcing the important role assumed by this network in contributing to Brazil keeps its high position in agricultural production and productivity

Degradabilidade ruminal de halófitas irrigadas com rejeito de dessalinização, em ovinos.

Objetivou-se neste trabalho a avaliação da degradabilidade ruminal da matéria seca, da fibra em detergente neutro e da proteína insolúvel em detergente neutro da erva sal e da beldroega. Foram utilizados dois ovinos Santa Inês fistulados no rúmen. Os tempos de incubação utilizados foram de 0; 3; 6; 24; 48 e 72 horas. A erva sal apresentou valores baixos para degradabilidade potencial e efetiva da MS, entretanto obteve valores melhores para a PIDN e FDN. Já a beldroega apresentou valores mais altos do que a erva sal para as variáveis estudadas, mostrando potencial para utilização na alimentação animal, principalmente em locais com solos excessivos em sais