Growth of Red, GIFT and Supreme Nile tilapia strains were evaluated. Fish were cultivated in indoor recirculation systems in 0.5 m3 tanks with controlled temperatures of 22, 28 and 30°C. Random samples of 20 fish from each strain (10 fish tank) were weighed at day 7, 30, 60, 90 and 120. Exponential model (y=Ae) and Gompertz model (y = Aexp(-Be)) were fitted and the estimates parameters were obt...

OBJECTIVE To describe temporal patterns in total lymphocyte count (TLC) and hemoglobin (Hgb) concentration during HIV infection and relate these patterns to changes in other markers and to clinical disease. DESIGN Prospective cohort study. METHODS Longitudinal trajectories of total lymphocyte count and hemoglobin from men in the Multicenter AIDS Cohort Study were studied by applying, to eac...

Since Rayleigh’s early work on shear-flow driven instabilities in fluids, it has been known that sheared flows are usually unstable only in the presence of an inflection point in the velocity profile. However, in magnetohydrodynamics, there are important instabilities for which no inflection point is required. In tokamak experiments, strongly sheared flows are associated with transport barriers...

Many languages allow a pronoun to go unpronounced in the presence of inflectional marking for person and number. This paper explores the hypothesis that inflection may itself be ‘pronominal’ using data from Irish which exhibits a well-known complementary distribution between person/number inflection and pronouns. Such complementarity follows if inflection forms a syntactic chain with a pronoun ...

Abstract The learning of calculus concepts is considered challenging for students. This claim actual in general and specific particular. In this paper, we focus on the concept inflection point. We argue that one roots problem lack a useful productive meaning concept—the understanding point as where behaviour curve (graph function) changes relation to tangent line. With purpose helping students ...

Success of pig production depends on maximizing return over feed costs and addressing potential nutrient pollution to the environment. Mathematical modeling has been used to describe many important aspects of inputs and outputs of pork production. This study was undertaken to compare 4 mathematical functions for the best fit in terms of describing specific data sets on pig growth and, in a sepa...