The effect of primordial temperature fluctuations on the QCD transition

We analyze a new mechanism for the cosmological QCD first-order phase transition: inhomogeneous nucleation. The primordial temperature fluctuations are larger than the tiny temperature interval, in which bubbles would form in the standard picture of homogeneous nucleation. Thus the bubbles nucleate at cold spots. We find the typical distance between bubble centers to be a few meters. This exceeds the estimates from homogeneous nucleation by two orders of magnitude. The resulting baryon inhomogeneities may affect primordial nucleosynthesis.Comment: 6 pages, 1 figure. To appear in the Proceedings of Strong and Electroweak Matter 2000 (SEWM2000), Marseilles, France, 14-17 June 200

The QCD phase transition in the inhomogeneous Universe

We investigate a new mechanism for the cosmological QCD phase transition: inhomogeneous nucleation. The primordial temperature fluctuations, measured to be $\delta T/T \sim 10^{-5}$, are larger than the tiny temperature interval, in which bubbles would form in the standard picture of homogeneous nucleation. Thus the bubbles nucleate at cold spots. We find the typical distance between bubble centers to be a few meters. This exceeds the estimates from homogeneous nucleation by two orders of magnitude. The resulting baryon inhomogeneities may affect primordial nucleosynthesis.Comment: Version to appear in Phys. Rev. Lett., 4 pages, 1 figure. Difference to heterogeneous nucleation emphasized, amplitude of temperature fluctuations analyzed in more detail, new length scale l_heat introduced, more complicated geometry of baryon number discussed shortly (relevant for low values of l_heat

Prothrombin complex concentrates or recombinant factor VIIa are more effective than fresh-frozen plasma at lowering INR in patients with liver disease

A critical appraisal and clinical application of Kwon JO, MacLaren R. Comparison of fresh-frozen plasma, four-factor prothrombin complex concentrates, and recombinant factor VIIa to facilitate procedures in critically ill patients with coagulopathy from liver disease: a retrospective cohort study. Pharmacotherapy. 2016;36(10):1047-1054. doi: 10.1002/phar.182

Transformed Generate Approximation method for generalized boundary value problems using first-kind Chebychev polynomials

In this paper, a new numerical method, the Transformed Generate Approximation Method (TGAM) is proposed for generalized boundary value problems with first-kind Chebychev polynomials as trial functions. In this method, the trial functions are substituted into the transformed system of ordinary differential equations in order to generate systems of linear algebraic equations satisfying the boundary conditions, which on solving yield the required approximate solution. The method is structurally simple as it requires no perturbation or discretization. The method is reliable in seeking the solution of boundary value problems as numerical illustrations reveal. Results obtained were compared with the exact solution and other methods available in literature. Also, convergence analysis of the method is presented. All computations are carried out with Maple 18 software.Keywords: Boundary value problem, Chebychev polynomials, Trial functions, Approximate solutio