Switching a spin-valve back and forth by current-induced domain wall motion

We have studied the current-induced displacement of a domain wall (DW) in the permalloy (Py) layer of a Co/Cu/Py spin valve structure at zero and very small applied field. The displacement is in opposite direction for opposite dc currents, and the current density required to move DW is only of the order of 10^6 A/cm^2. For H = 3 Oe, a back and forth DW motion between two stable positions is observed. We also discuss the effect of an applied field on the DW motion.Comment: 4 pages, 3 figure

Reconstructing Supersymmetry at ILC/LHC

Coherent analyses of experimental results from LHC and ILC will allow us to draw a comprehensive and precise picture of the supersymmetric particle sector. Based on this platform the fundamental supersymmetric theory can be reconstructed at the high scale which is potentially close to the Planck scale. This procedure will be reviewed for three characteristic examples: minimal supergravity as the paradigm; a left-right symmetric extension incorporating intermediate mass scales; and a specific realization of string effective theories.Comment: published in Proceedings of the Ustron Conference 2005; technical LaTeX problem correcte

The Heavy Quark Form Factors at Two Loops

We compute the two-loop QCD corrections to the heavy quark form factors in case of the vector, axial-vector, scalar and pseudo-scalar currents up to second order in the dimensional parameter $\epsilon = (4-D)/2$. These terms are required in the renormalization of the higher order corrections to these form factors.Comment: 131 pages, 3 figure

Reconstruction of Fundamental SUSY Parameters

We summarize methods and expected accuracies in determining the basic low-energy SUSY parameters from experiments at future e$^+$e$^-$ linear colliders in the TeV energy range, combined with results from LHC. In a second step we demonstrate how, based on this set of parameters, the fundamental supersymmetric theory can be reconstructed at high scales near the grand unification or Planck scale. These analyses have been carried out for minimal supergravity [confronted with GMSB for comparison], and for a string effective theory.Comment: 8 pages, latex, 7 figures, expanded version of contributions to the proceedings of ICHEP.2002 (Amstersdam) and LCWS.2002 (Jeju Island

Heavy quark form factors at two loops in perturbative QCD

We present the results for heavy quark form factors at two-loop order in perturbative QCD for different currents, namely vector, axial-vector, scalar and pseudo-scalar currents, up to second order in the dimensional regularization parameter. We outline the necessary computational details, ultraviolet renormalization and corresponding universal infrared structure.Comment: 13 pages Latex, Proceedings of XLI International Conference of Theoretical Physics "Matter to the Deepest", Podlesice, Poland, September 3-8, 2017 and RADCOR 2017, St.~Gilgen Austria, Sept 24-29, 201

Doramectin e levamizole no controle dos helmintos de bovinos no início da estação seca.

Sessenta bovinos da raça Canchim, com idade aproximada de 15 meses e mantidos em pastagem de Brachiaria decumbens Slapf, foram distribuídos aleatoriamente em três tratamentos (l) com 20 animais cada, para controle de nematódeos gastrintestinais (TI- controle; Tj; Dorameclin, ml(/50kg/peso vivo, correspondendo a 200,ug/kg; e TJ Levamizole e ml(/40kg/peso vivo, equivalente a 3, 75mg do princípio ativo por quilograma de peso) A aplicação foi feita via parenteral, Subcutânea, sendo as infecções verminóticas obtidas naturalmente a pasto, O experimento foi realizado na fazenda Canchim, base física do Centro de Pesquisa de Pecuária do Sudeste (CPPSE), em São Carlos, SP, de abril a ,junho de 1995. Foram avaliados o peso corporal (PC), número de ovos por grama de fezes (OPG) e volume corpuscular médio (VCM), por seis períodos (P): 0, 14, 28, 42, 56 e 70 dias pós-dosificação. O modelo de análise incluiu, além da média, os efeitos de T: de P e da interação T x P. A partir dos 14 dias de avaliação, 0 Doraqmectin foi o que apresentou o menor OPG (P0,05) entre esses dois grupos a partir dos 42 dias. Os animais tratados apresentaram ganho de peso semelhantes (P>0,05) até o 42. dia Quanto ao controle, observou-se redução no ganho de peso (P0,05) entre si em toda a fase experimental, observando-se no entanto, valores inferiores (P,0,05) desta variável a partir dos 28 dias no grupo controle

Rapid prototyping and tooling in the manufacture of mould elements for large parts

In the last two decades the advances in rapid prototyping and tooling (RPT) technologies made possible the use of materials alternative to steel in some mould components. They also have allowed novel fabrication strategies and new ways of thinking on the production of injection moulds for short series of plas-tics parts. These technologies induced a new generation of toolmaking techniques. In the scope of the devel-opment project Hybridmould 21 the pros and cons of some RPT technologies were studied to fabricate moulding blocks and inserts for hybrid injection moulds for large plastics parts. Essentially, the studies aimed at finding the best solution for quick production and compliance with specific product requirements, such as complex features, complex cooling layout and large size (around 1 m2) in short production series. This paper discusses the main advantages and disadvantages associated to a number of different RPT technologies for the manufacture of moulding element.Program QREN - ‘Concessão de Incentivos Financeiros no âmbito do Sistema de Incentivos à Investigação e Desenvolvimento Tecnológico’ (contract 2010/013307) – Project Hybridmould 2