Magnetic excitations in the metallic single-layer Ruthenates Ca(2-x)Sr(x)RuO(4) studied by inelastic neutron scattering

By inelastic neutron scattering, we have analyzed the magnetic correlations in the paramagnetic metallic region of the series Ca(2-x)Sr(x)RuO(4), 0.2<=x<=0.62. We find different contributions that correspond to 2D ferromagnetic fluctuations and to fluctuations at incommensurate wave vectors (0.11,0,0), (0.26,0,0) and (0.3,0.3,0). These components constitute the measured response as function of the Sr-concentration x, of the magnetic field and of the temperature. A generic model is applicable to metallic Ca(2-x)Sr(x)RuO(4) close to the Mott transition, in spite of their strongly varying physical properties. The amplitude, characteristic energy and width of the incommensurate components vary only little as function of x, but the ferromagnetic component depends sensitively on concentration, temperature and magnetic field. While ferromagnetic fluctuations are very strong in Ca1.38Sr0.62RuO4 with a low characteristic energy of 0.2 meV at T=1.5 K, they are strongly suppressed in Ca1.8Sr0.2RuO4, but reappear upon the application of a magnetic field and form a magnon mode above the metamagnetic transition. The inelastic neutron scattering results document how the competition between ferromagnetic and incommensurate antiferromagnetic instabilities governs the physics of this system

Identity economics meets identity leadership: Exploring the consequences of elevated CEO pay

This is the author accepted manuscript. The final version is available from the publisher via the DOI in this recordEconomists have recently proposed a theory of identity economics in which behavior is understood to be shaped by motivations associated with identities that people share with others. At the same time psychologists have proposed a theory of identity leadership in which leaders' influence flows from their creation and promotion of shared identity with followers. Exploring links between these approaches, we examine the impact of very high leader pay on followers' identification with leaders and perceptions of their leadership. Whereas traditional approaches suggest that high pay incentivizes leadership, identity-based approaches argue that it can undermine shared identity between leaders and followers and therefore be counterproductive. Supporting this identity approach, two studies provide experimental and field evidence that people identify less strongly with a CEO who receives high pay relative to other CEOs and that this reduces that leader's perceived identity leadership and charisma. The implications for leadership, economics, and organizations are discussed.Australian Research Council (ARC

Improvement in soybean sprouts production with ultrasound power.

The present work aimed the application of different ultrasound powers (10, 50 and 90W) to evaluate the germination and characteristics of soybean sprouts fromsoybeans of cultivar BRS 216 and 3 lines (A, B and C). In the germination test,the line A showed the highest percentage of germination (96% for 90W).The cultivar BRS 216 and line A present lower values of weight and higher yield of sprouts. The viable sprouts that presented the highest weight (for each 50g of soybean) were: line A followed by BRS 216, line C and B, with statistical differences (p<0.05) between them. For each 50g of soybean of cultivar BRS 216 and Lines A, B and C the production of viable sprouts was 231.47; 237.87; 170.74 and 199.94g, respectively, for 90W. In relation to the length of the sprouts using the power of 10W the line C presented a longer length. The line A using 90W showed better color characteristics. The highest protein value was found in cultivar BRS 216, for all applied potencies. With this work it can be concluded that the line A would be the most suitable for sprout production regardless of the ultrasound power applie

Anisotropy of the incommensurate fluctuations in Sr2RuO4: a study with polarized neutrons

The anisotropy of the magnetic incommensurate fluctuations in Sr2RuO4 has been studied by inelastic neutron scattering with polarized neutrons. We find a sizeable enhancement of the out of plane component by a factor of two for intermediate energy transfer which appears to decrease for higher energies. Our results qualitatively confirm calculations of the spin-orbit coupling, but the experimental anisotropy and its energy dependence are weaker than predicted.Comment: 4 pages, 4 figure

Evaluation of packaging systems with O2-absorbers on quality of minimally processed soybean sprouts.

Abstract: This study evaluated the influence of O2-absorbing sachets into different packages polyethylene terephthalate (PET ? E1), low density polyethylene (LDPE ? E2), and PET/LDPE (E3) on the quality of minimally processed soybean sprouts (MP-sprouts). The MP-sprouts were stored up to 12 days and characterized for physicochemical, microbiological and sensory attributes. The O2-absorbing sachet showed changes during exposure to the environment by the formation of amorphous iron hydroxide, which was observed by the analysis of functional groups and XRD. The packaging used in the study showed high transmittance and clarity, and low Haze, being a good feature for storing the MP product. All packaging systems showed an increase in the volume of absorbed oxygen (cm3) up to 9 days of storage. The physic-chemical characteristics of the MP-sprouts stored for 12 days were preserved in the different packages, showing no difference regarding the use of the O2-absorbing sachet. The O2-absorbing sachet not influenced the quality of MP-sprouts during the stored (12 days). The best visual aspect was observed in PET package (with and without O2-absorbing sachet) being classified as excellent, without color change. The MP-sprouts also fulfilled the microbiological quality standards and presented 75.11% acceptability and 72.40% purchase intention

Infection Prevention and the Protective Effects of Unidirectional Displacement Flow Ventilation in the Turbulent Spaces of the Operating Room

Background: Unidirectional displacement flow (UDF) ventilation systems in operating rooms are characterized by a uniformity of velocity 80% and protect patients and operating room personnel against exposure to hazardous substances. However, the air below the surgical lights and in the surrounding zone is turbulent, which impairs the ventilation system’s effect. Aim: We first used the recovery time (RT) as specified in International Organization for Standardization 14644 to determine the particle reduction capacity in the turbulent spaces of an operating room with a UDF system. Methods: The uniformity of velocity was analyzed by comfort-level probe grid measurements in the protected area below a hemispherical closed-shaped and a semi-open column-shaped surgical light (tilt angles: 0/15/30) and in the surrounding zone of a research operating room. Thereafter, RTs were calculated. Results: At a supply air volume of 10,500 m3/h, the velocity, reported as average uniformity+standard deviation, was uniform in the protected area without lights (95.8% + 1.7%), but locally turbulent below the hemispherical closedshaped (69.3% + 14.6%), the semi-open column-shaped light (66.9% + 10.9%), and in the surrounding zone (51.5%+17.6%). The RTs ranged between 1.1 and 1.7 min below the lights and 3.5+0.28 min in the surrounding zone and depended exponentially on the volume flow rate. Conclusions: Compared to an RT of 20 min as required for operating rooms with mixed dilution flow, particles here were eliminated 12–18 times more quickly from below the surgical lights and 5.7 times from the surrounding zone. Thus, the effect of the lights was negligible and the UDF’s retained its strong protective effect

Sistema simplificado para produção de brotos de soja: uma atividade econômica para pequenos empreendimentos.

A soja é uma excelente fonte de nutrientes, com a proteína perfazen­do cerca de 40% da matéria seca, e com adequado perfil de aminoácidos, segundo os padrões da FAO. Outro componente importante é o óleo, que corresponde a cerca de 20% da matéria seca, com teor de ácidos graxos polinsaturados da ordem de 85%. Além disso, contém vários micronutrientes incluindo cálcio, ácido fólico e ferro. Entretanto, a soja se destaca por ser boa fonte de isoflavonas, as quais são benéficas para a saúde humana, e fazem da soja ingrediente para alimentos funcionais. Embora o uso de soja seja mais popular nos países do oriente, seu consumo vem crescendo nos países do ocidente, tanto em relação aos produtos tradicionais (farinha de soja, ?kinako?, tofu e ?leite?), como para os produtos processados que utilizam soja como ingrediente. O consumo de soja tem aumentado devido às técnicas adequadas de processamento que favorecem o sabor e a qualidade dos produtos alimentícios. Consumo direto de soja é tradicional em países asiáticos, os quais consomem extrato hidrossolúvel, tofu, grãos verdes ou imaturos (edamame) e brotos de soja, entre outros alimentos. (...)O objetivo do trabalho foi avaliar a viabilidade da tecnologia do processo automatizado de produção de brotos de soja da Embrapa, a partir da simplificação do equipamento desenvolvido por Oliveira e Carrão-Panizzi (2016a). A qualidade dos brotos obtidos com o sistema simplificado também foi verificada nas avaliações das características físico-químicas dos mesmos. A cultivar BRS 216, desenvolvida pela Embrapa para produção de brotos de soja, foi utilizada nesse estudo, pois apresenta sementes pequenas (10 g/peso de 100 sementes), característica essencial para produção de brotos. Palavras-chaves: soja, Glycine max (L.)Merrill, BRS 2016, produção de broto, alimentação humanabitstream/item/221446/1/ComTec-374-online.pd

The Polarized H and D Atomic Beam Source for ANKE at COSY-J\"ulich

A polarized atomic beam source was developed for the polarized internal storage-cell gas target at the magnet spectrometer ANKE of COSY-J\"ulich. The intensities of the beams injected into the storage cell, measured with a compression tube, are $7.5\cdot 10^{16}$ hydrogen atoms/s (two hyperfine states) and $3.9\cdot 10^{16}$ deuterium atoms/s (three hyperfine states). For the hydrogen beam the achieved vector polarizations are $p_{\rm z}\approx\pm0.92$. For the deuterium beam, the obtained combinations of vector and tensor ($p_{\rm zz}$) polarizations are $p_{\rm z}\approx\pm 0.90$ (with a constant $p_{\rm zz}\approx +0.86$), and $p_{\rm zz}=+0.90$ or $p_{\rm zz}=-1.71$ (both with vanishing $p_{\rm z}$). The paper includes a detailed technical description of the apparatus and of the investigations performed during the development.Comment: 18 pages, 26 figures, 4 table