Computation of the equilibrium composition of reacting gas-solid mixtures with material and energy balance constraints Status report

Equilibrium composition computed for reacting- gas-solid composite materials using material and energy constraint

Experimental verification of the non-equilibrium model for predicting behavior in the char zone of a charring ablator Status report

Experimental simulation to establish accuracy of nonequilibrium flow model with system simulating charring during ablatio

Solution of the Frozen Flow Momentum Equation Status Report

Momentum equation solved for frozen flow in char zone of charring ablato

Boas práticas agropecuárias: bovinos de corte.

Gestão econômica e financeira. Função social do imóvel rural. Responsabilidade social. Gestão ambiental. Instalações rurais. Manejo pré-abate e bons tratos na produção animal. Formação e manejo de pastagens. Suplementação alimentar. Identificação animal e rastreamento. Controle sanitário. Manejo reprodutivo. Fones consultadas. Anexo1. Exemplo de cálculo d GUT e FEE para o Estado de Mato Grosso do Sul. Anexo2. Leis ambientais mais importantes ligadas à produção agropecuária. Anexo 3. Normas para trânsito de animais vivos suscetíveis à febre aftosa entre os diferentes Estados da Federação. Anexo 4. Objetivos e introções para preenchimento da lista de verificações. Formulário de identificação da propriedade. Lista de verificações. Formulário de identificação da propriedade. Lista de verificações para implantação das Boas práticas agropecuárias - Bovinos de corte.bitstream/item/104542/1/Bovinos-de-Corte.pdfCNPGC

Comparison of Methods for Determining the Composition of Pyrolysis Products from the Degradation of Ablative Composites. Status report.

Determining composition of pyrolysis products from degradation of ablative material

Superconducting/magnetic three state nanodevice for memory and reading applications

We present a simple nanodevice that can operate in two modes: i) three-state memory and ii) reading device. The nanodevice is fabricated with an array of ordered triangular-shaped nanomagnets embedded in a superconducting thin film. The input signal is ac current and the output signal is dc voltage. Vortex ratchet effect in combination with out of plane magnetic anisotropy of the nanomagnets is the background physics which governs the nanodevice performance.Comment: 10 pages, 4 figure

Scaling of the conductance in gold nanotubes

A new form of gold nanobridges has been recently observed in ultrahigh-vacuum experiments, where the gold atoms rearrange to build helical nanotubes, akin in some respects to carbon nanotubes. The good reproducibility of these wires and their unexpected stability will allow for conductance measurements and make them promising candidates for future applications . We present here a study of the transport properties of these nanotubes in order to understand the role of chirality and of the different orbitals in quantum transport observables. The conductance per atomic row shows a light decreasing trend as the diameter grows, which is also shown through an analytical formula based on a one-orbital model.Comment: 5 pages, 6 figure

Measurements of vacuum magnetic birefringence using permanent dipole magnets: the PVLAS experiment

The PVLAS collaboration is presently assembling a new apparatus (at the INFN section of Ferrara, Italy) to detect vacuum magnetic birefringence (VMB). VMB is related to the structure of the QED vacuum and is predicted by the Euler-Heisenberg-Weisskopf effective Lagrangian. It can be detected by measuring the ellipticity acquired by a linearly polarised light beam propagating through a strong magnetic field. Using the very same optical technique it is also possible to search for hypothetical low-mass particles interacting with two photons, such as axion-like (ALP) or millicharged particles (MCP). Here we report results of a scaled-down test setup and describe the new PVLAS apparatus. This latter one is in construction and is based on a high-sensitivity ellipsometer with a high-finesse Fabry-Perot cavity ($>4\times 10^5$) and two 0.8 m long 2.5 T rotating permanent dipole magnets. Measurements with the test setup have improved by a factor 2 the previous upper bound on the parameter $A_e$, which determines the strength of the nonlinear terms in the QED Lagrangian: $A_e^{\rm (PVLAS)} < 3.3 \times 10^{-21}$ T$^{-2}$ 95% c.l. Furthermore, new laboratory limits have been put on the inverse coupling constant of ALPs to two photons and confirmation of previous limits on the fractional charge of millicharged particles is given

The PVLAS experiment: measuring vacuum magnetic birefringence and dichroism with a birefringent Fabry-Perot cavity

Vacuum magnetic birefringence was predicted long time ago and is still lacking a direct experimental confirmation. Several experimental efforts are striving to reach this goal, and the sequence of results promises a success in the next few years. This measurement generally is accompanied by the search for hypothetical light particles that couple to two photons. The PVLAS experiment employs a sensitive polarimeter based on a high finesse Fabry-Perot cavity. In this paper we report on the latest experimental results of this experiment. The data are analysed taking into account the intrinsic birefringence of the dielectric mirrors of the cavity. Besides the limit on the vacuum magnetic birefringence, the measurements also allow the model-independent exclusion of new regions in the parameter space of axion-like and milli-charged particles. In particular, these last limits hold also for all types of neutrinos, resulting in a laboratory limit on their charge