Histories of evolutionary thought are dominated by organic evolution. The colossus in our midst that is evolutionary biology casts its shadow over history, making it appear that what is so widespread and important today was always the primary subject of evolutionary speculation. Thus many histories assume that the core meaning of evolution is the change of organic life and that other forms of e...

Our understanding of the evolution of 4He and 7Li depends critically on the available data for these two elements at low metallicity. In particular, the degree to which there is a slope in an abundance vs metallicity regression can help determine the evolution of He, C, N, and O in dwarf galaxies in the case of 4He, and cosmic-ray induced nucleosynthesis of LiBeB in our own galaxy in the case o...

This paper investigates the evolution of a void and an adjacent galaxy supercluster. For this purpose the quasispherical Szekeres model is employed. The Szekeres model is an exact solution of the Einstein field equations. In this way investigations of the evolution of the cosmic structures presented here can be freed from such assumptions as small amplitude of the density contrast. Studying the...

the aim of designing the education spaces is to providing the required spatial relationships for education processes. it means that the spaces and equipment which are required in every field, how and by the which discipline thy have been arranged to offer the final aim of education in advance, is the achievements of providing the education spaces management. the purpose of study is to evaluate ...

this work reports the results of the application of the second-order maccormack method for numerical solution of‎ the conservative form of two-dimensional non-hydrostatic and fully compressible navier-stokes equations governing an inviscid and adiabatic atmosphere‎. various aspects of the computational approach such as discretization of the governing equations for the interior and boundary poin...

in this paper we investigate a nonlinear evolution model described by the rosenau-kdv equation. we propose a three-level average implicit finite difference scheme for its numerical solutions and prove that this scheme is stable and convergent in the order of o(τ2 + h2). furthermore we show the existence and uniqueness of numerical solutions. comparing the numerical results with other methods in...

background: the study evaluated qualitative pcr, primers 121-122 as a tool to follow up evolution parasite load of trypanosoma cruzi . methods: the study was conducted at the state university of maringa, in 2015. step 1, dilutions 1/10 were performed from t. cruzi -y strain to obtain preparations of 50,000-0.05 parasites/ml from which dna were extracted, quantified, and amplified. step 2, the e...