910 research outputs found

    Long time behaviour and self-similarity in an addition model with slow Input of monomers

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    We consider a coagulation equation with constant coefficients and a time dependent power law input of monomers. We discuss the asymptotic behaviour of solutions as tt \to \infty, and we prove solutions converge to a similarity profile along the non-characteristic direction

    KUALITAS KIMIA DAN ORGANOLEPTIK SOSIS DARAH TRADISIONAL (TA’BU) KAMBINGYANG DIBERI TAMBAHANPASTA ASAM TAMARIN(Tamarindus indica L.) (Chemical and organoleptik quality of traditional bloodsausages (ta'bu) added tamarind acid paste (Tamarindus indica L.)

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    This study aimed to determine the chemical and organoleptic quality of traditional blood sausage (Ta'bu) that added tamarind acid paste(Tamarindus indica L.) with different level. The materials used were goat blood, mutton, goat abdominal fat, goat liver, grated coconut, black rice flour, tamarind paste, salt, and herbs. Completely randomized design (CRD) 4x3 was used in this experiment.  The four treatments consisted of P0; without tamarind paste, P1; tamarind paste 2%, P2; tamarind paste 4% and P3; tamarind paste 6%. The variables measured were content of water, fat, protein, crude fiber, cholesterol, and color, aroma, taste, and texture. Data were analyzed using Kruskal-Wallis ANOVA and non-parametric Kruskal-Wallis. The results showed that the addition of tamarind paste caused the water and fiber content to increase, while the fat and cholesterol content decreased (P<0.01), the texture was moderate to fine and the color varied from light brown to red-brown (P<0.05). The lowest fat and cholesterol content were 13.70% and 83.28% respectively at P3 (6%), and dark brown in colour with texture medium – smooth, or the same as the control. The results of this study concluded that the best addition of tamarind paste was at the 6% level

    Sistemas de patentes e princípio da suficiência descritiva: uma abordagem a partir do Direito Brasileiro e do Direito Internacional

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    Os sistemas de patentes pretendem incentivar o desenvolvimento tecnológico de duas maneiras: em primeiro lugar, criando um monopólio temporário a favor do inventor, permitindo-lhe colher os benefícios patrimoniais da sua criatividade e, se for o caso, recuperar os custos do investimento que por ele ou por outros investidores haja sido realizado na atividade de pesquisa e desenvolvimento que possibilitou a invenção. Em segundo lugar, promovendo a divulgação e partilha do conhecimento inovador e inventivo, possibilitando a comercialização dos inventos e o progresso científico. Estas são as principais virtualidades do sistema de patentes

    Large scale numerical investigation of excited states in poly(phenylene)

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    A density matrix renormalisation group scheme is developed, allowing for the first time essentially exact numerical solutions for the important excited states of a realistic semi-empirical model for oligo-phenylenes. By monitoring the evolution of the energies with chain length and comparing them to the experimental absorption peaks of oligomers and thin films, we assign the four characteristic absorption peaks of phenyl-based polymers. We also determine the position and nature of the nonlinear optical states in this model.Comment: RevTeX, 10 pages, 4 eps figures included using eps

    Decoherence in trapped ions due to polarization of the residual background gas

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    We investigate the mechanism of damping and heating of trapped ions associated with the polarization of the residual background gas induced by the oscillating ions themselves. Reasoning by analogy with the physics of surface electrons in liquid helium, we demonstrate that the decay of Rabi oscillations observed in experiments on 9Be+ can be attributed to the polarization phenomena investigated here. The measured sensitivity of the damping of Rabi oscillations with respect to the vibrational quantum number of a trapped ion is also predicted in our polarization model.Comment: 26 pdf pages with 5 figures, http://www.df.ufscar.br/~quantum

    Anisotropic flow of charged hadrons, pions and (anti-)protons measured at high transverse momentum in Pb-Pb collisions at sNN=2.76\sqrt{s_{\rm NN}}=2.76 TeV

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    The elliptic, v2v_2, triangular, v3v_3, and quadrangular, v4v_4, azimuthal anisotropic flow coefficients are measured for unidentified charged particles, pions and (anti-)protons in Pb-Pb collisions at sNN=2.76\sqrt{s_{\rm NN}} = 2.76 TeV with the ALICE detector at the Large Hadron Collider. Results obtained with the event plane and four-particle cumulant methods are reported for the pseudo-rapidity range η<0.8|\eta|<0.8 at different collision centralities and as a function of transverse momentum, pTp_{\rm T}, out to pT=20p_{\rm T}=20 GeV/cc. The observed non-zero elliptic and triangular flow depends only weakly on transverse momentum for pT>8p_{\rm T}>8 GeV/cc. The small pTp_{\rm T} dependence of the difference between elliptic flow results obtained from the event plane and four-particle cumulant methods suggests a common origin of flow fluctuations up to pT=8p_{\rm T}=8 GeV/cc. The magnitude of the (anti-)proton elliptic and triangular flow is larger than that of pions out to at least pT=8p_{\rm T}=8 GeV/cc indicating that the particle type dependence persists out to high pTp_{\rm T}.Comment: 16 pages, 5 captioned figures, authors from page 11, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/186
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