Dual-species quantum degeneracy of potassium-40 and rubidium-87 on an atom chip

In this article we review our recent experiments with a 40K-87Rb mixture. We demonstrate rapid sympathetic cooling of a 40K-87Rb mixture to dual quantum degeneracy on an atom chip. We also provide details on efficient BEC production, species-selective magnetic confinement, and progress toward integration of an optical lattice with an atom chip. The efficiency of our evaporation allows us to reach dual degeneracy after just 6 s of evaporation - more rapidly than in conventional magnetic traps. When optimizing evaporative cooling for efficient evaporation of 87Rb alone we achieve BEC after just 4 s of evaporation and an 8 s total cycle time.Comment: 8 pages, 4 figures. To be published in the Proceedings of the 20th International Conference on Atomic Physics, 2006 (Innsbruck, Austria

Magnetic properties of σ\sigma-FeCr alloy as calculated with the charge and spin self-consistent KKR(CPA) method

Magnetic properties of a $\sigma-$Fe$_{16}$Cr$_{14}$ alloy calculated with the charge and spin self- consistent Korringa-Kohn-Rostoker (KKR) and combined with coherent potential approximation (KKR-CPA) methods are reported. Non-magnetic state as well as various magnetic orderings were considered, i.e. ferromagnetic (FM) and more complex anti-parallel (called APM) arrangements for selected sublattices, as follows from the symmetry analysis. It has been shown that the Stoner criterion applied to non-magnetic density of states at the Fermi energy, $E_F$ is satisfied for Fe atoms situated on all five lattice sites, while it is not fulfilled for all Cr atoms. In FM and APM states, the values of magnetic moments on Fe atoms occupying various sites are dispersed between 0 and 2.5 $\mu_B$, and they are proportional to the number of Fe atoms in the nearest-neighbor shell. Magnetic moments of Cr atoms havin much smaller values were found to be coupled antiparallel to those of Fe atoms. The average value of the magnetic moment per atom was found to be $=0.55 \mu_B$ that is by a factor of 4 larger than the experimental value found for a $\sigma-$Fe$_{0.538}$Cr$_{0.462}$ sample. Conversely, admitting an anti- parallel ordering (APM model) on atoms situated on C and D sites, according to the group theory and symmetry analysis results, yielded a substantial reduction of to 0.20 $\mu_B$. Further diminution of to 0.15 $\mu_B$, which is very close to the experimental value of 0.14 $\mu_B$, has been achieved with the KKR-CPA calculations by considering a chemical disorder on sites B, C and D

Designing for comfort in shared and automated vehicles (SAV): a conceptual framework

To date, automotive design and research is heavily biased towards the driver. However, with the rapid advance of vehicle automation, the driving task will increasingly being taken over by a machine. Automation by itself, however, will not be able to tackle the transport challenges we are facing and the need for shared mobility is now widely recognized. Future mobility solutions are therefore expected to consist of Shared and Automated Vehicles (SAV). This means that the passenger experience will take center stage in the design of future road vehicles. Whereas at first sight this may not appear to be different to the experience in other modes of transport, automation and shared mobility introduce different psychological, physical and physiological challenges. These are related to the fact that the occupant is no longer in control, has to put his or her life in the hands of a computer, while at the same time expects such future vehicles to render travel time more efficient or pleasurable and engage in so-called non-driving related tasks. Taking inspiration from work conducted in the field of aircraft passenger comfort experience, we discuss major comfort factors in the context of SAV and highlight both similarities and differences between transport modes. We present a human centered design framework to assist both the research agenda and the development of safe, usable, comfortable, and desirable future mobility solutions

Caracterização molecular dos acessos componentes da coleção nuclear de feijão da Embrapa utilizando marcadores microssatélites.

O objetivo do trabalho foi caracterizar, através de marcadores microssatélites fluorescentes, os acessos da CONFE (Coleção Nuclear de Feijão da Embrapa)

Análise da diversidade genética dos acessos componentes da coleção nuclear de feijão da Embrapa através de marcadores SSR.

O objetivo deste trabalho foi caracterizar acessos componentes da Coleção Nuclear de Feijão através de marcadores SSR fluorescentes.CONAFE

Caracterização da diversidade genética da Coleção Nuclear de Feijão da Embrapa.

Este trabalho teve como principais objetivos a caracterização molecular da CONFE (cada acesso representado por dois bulks de cinco plantas) e a determinação de sua estrutura populacional.Pôster - graduação

Caracterização genética da coleção nuclear de feijão da Embrapa pelo uso de marcadores SSR.

O Objetivo deste trabalho foi caracterizar molecularmente a Coleção Nuclear de feijão da Embrapa (constituída por 580acessos). A utilização de marcadores microssatélites permitiu a determinação da relação genética entre os acessos, a variabilidade genética existente dentro de cada acesso, aspecto este relevante como etapa inicial da avaliação de uma coleção nuclear

Análise da diversidade genética de acessos componentes da Coleção Nuclear de Feijão da Embrapa.

O objetivo deste trabalho foi caracterizar, através de marcadores microssatélites, os acessos da CONFE (Coleção Nuclear de Feijão da Embrapa)