Risk factor control in hypertensive and diabetic subjects attended by the Family Health Strategy in the State of Pernambuco, Brazil : the SERVIDIAH study = Controle dos fatores de risco em hipertensos e diabéticos acompanhados pela Estratégia Saúde da Família no Estado de Pernambuco, Brasil : estudo SERVIDIAH

The SERVIDIAH study (Evaluation of Health Services for Diabetic and Hypertensive Subjects) was conducted in 2010 in the State of Pernambuco, Brazil. A multi-stage random sample of 785 hypertensive and 823 diabetic patients was drawn from 208 Family Health Strategy (FHS) units selected throughout 35 municipalities. Patients underwent a structured interview and weight, height, blood pressure and HbA1c levels (for diabetic patients) were measured. Mean age was approximately 60 years, and women were overrepresented in the sample (70%). 43.7% of hypertensive subjects and 25.8% of diabetic subjects achieved adequate blood pressure control and 30.5% of diabetic subjects had HbA1c levels below 7%. Despite 70% of the patients being overweight or obese, few had adhered to a weight-loss diet. The study of this representative sample of hypertensive and diabetic patients attended by the FHS in the State of Pernambuco shows that improvements in the management of hypertension and diabetes are needed in order to prevent the occurrence of serious and costly complications, especially given the context of increasing incidence of these two conditions

Fractional transport equations for Levy stable processes

The influence functional method of Feynman and Vernon is used to obtain a quantum master equation for a Brownian system subjected to a Levy stable random force. The corresponding classical transport equations for the Wigner function are then derived, both in the limit of weak and strong friction. These are fractional extensions of the Klein-Kramers and the Smoluchowski equations. It is shown that the fractional character acquired by the position in the Smoluchowski equation follows from the fractional character of the momentum in the Klein-Kramers equation. Connections among fractional transport equations recently proposed are clarified.Comment: 4 page

Modelagem da transferência das pressões aplicadas na superfície de um argissolo do tabuleiros costeiros.

O horizonte subsuperficial coeso dos Argissolos de Tabuleiros Costeiros, reduz a profundidade efetiva desses solos, comprometendo a produtividade e longevidade das lavouras de culturas perenes. Essa limitação pedogenética pode ser potencializada quando a pressão aplicada na superfície do horizonte Ap, durante o tráfego de máquinas agrícolas é transmitida para horizontes mais profundos, AB ou Bt, em níveis superiores a capacidade de suporte de carga dessas camadas. Objetivou-se com esta pesquisa modelar matematicamente a transferência de pressões aplicadas à superfície do horizonte Ap de um Argissolo para camadas subsuperficiais buscando relacionar a pressão aplicada com a umidade do perfil de solo. Com o experimento desenvolvido no laboratório de Solos e Nutrição de Plantas da Embrapa Tabuleiros Costeiros, concluiu-se que a umidade apresenta efeito de amortecimento sobre a pressão transmitida de camadas superiores para subsuperfície. A pressão transmitida para subsuperfície apresenta comportamento exponencial com correlação negativa em função da profundidade, independente da pressão aplicada na superfície. O aumento da área de contato para aplicação de pressões na superfície do solo, atenua a transmissão de pressão para camadas inferiores, quando é comparado à mesma pressão aplicada em áreas menores

Transport properties of one-dimensional interacting fermions in aperiodic potentials

Motivated by the existence of metal-insulator transition in one-dimensional non-interacting fermions in quasiperiodic and pseudorandom potentials, we studied interacting spinless fermion models using exact many-body Lanczos diagonalization techniques. Our main focus was to understand the effect of the fermion-fermion interaction on the transport properties of aperiodic systems. We calculated the ground state energy and the Kohn charge stiffness Dc. Our numerical results indicate that there exists a region in the interaction strength parameter space where the system may behave differently from the metallic and insulating phases. This intermediate phase may be characterized by a power law scaling of the charge stiffness constant in contrast to the localized phase where Dc scales exponentially with the size of the system.Comment: 11 pages LaTex document with 5 eps figures. Uses revtex style file

Gravitational stability and dynamical overheating of stellar disks of galaxies

We use the marginal stability condition for galactic disks and the stellar velocity dispersion data published by different authors to place upper limits on the disk local surface density at two radial scalelengths $R=2h$. Extrapolating these estimates, we constrain the total mass of the disks and compare these estimates to those based on the photometry and color of stellar populations. The comparison reveals that the stellar disks of most of spiral galaxies in our sample cannot be substantially overheated and are therefore unlikely to have experienced a significant merging event in their history. The same conclusion applies to some, but not all of the S0 galaxies we consider. However, a substantial part of the early type galaxies do show the stellar velocity dispersion well in excess of the gravitational stability threshold suggesting a major merger event in the past. We find dynamically overheated disks among both seemingly isolated galaxies and those forming pairs. The ratio of the marginal stability disk mass estimate to the total galaxy mass within four radial scalelengths remains within a range of 0.4---0.8. We see no evidence for a noticeable running of this ratio with either the morphological type or color index.Comment: 25 pages, 5 figures, accepted to Astronomy Letter

Landau model for uniaxial systems with complex order parameter

We study the Landau model for uniaxial incommensurate-commensurate systems of the I class by keeping Umklapp terms of third and fourth order in the expansion of the free energy. It applies to systems in which the soft mode minimum lies between the corresponding commensurate wave numbers. The minimization of the Landau functional leads to the sine-Gordon equation with two nonlinear terms, equivalent to the equation of motion for the well-known classical mechanical problem of two mixing resonances. We calculate the average free energies for periodic, quasiperiodic and chaotic solutions of this equation, and show that in the regime of finite strengths of Umklapp terms only periodic solutions are absolute minima of the free energy, so that the phase diagram contains only commensurate configurations. The phase transitions between neighboring configurations are of the first order, and the wave number of ordering goes through harmless staircase with a finite number of steps. These results are the basis for the interpretation of phase diagrams for some materials from the I class of incommensurate-commensurate systems, in particular of those for A$_2$BX$_4$ and BCCD compounds. Also, we argue that chaotic barriers which separate metastable periodic solutions represent an intrinsic mechanism for observed memory effects and thermal hystereses.Comment: 12 pages, 14 figures, LaTeX, to be published in Phys. Rev.

Utilização de inoculantes e adubação nitrogenada relacionado ao rendimento e qualidade de grãos de soja.

O nitrogênio (N) é o nutriente essencial para a cultura da soja, podendo ser fornecido para a cultura através de bactérias do gênero Bradyrhizobium, presente em inoculantes. Mundialmente, a soja é o principal produto para produção de óleos e ração para animais, desta forma a qualidade dos grãos produzidos é extremamente importante. Assim, objetivou-se com este estudo, determinar: rendimento e propriedades físicas e fisiológicas de grãos, em função da utilização de diferentes tipos de inoculantes e adubação nitrogenada, na soja transgênica e convencional. Utilizou-se delineamento de blocos em acaso com duas cultivar, quatro repetições e testados quatro tratamentos: inoculante turfoso, líquido, adubação com N mineral e sem inoculante e fertilizante nitrogenado. Os resultados demostram que a inoculação de soja com inoculantes líquidos e turfosos, proporcionou aumento na produtividade de grãos. Em produtividade, a cultivar convencional superou a cultivar transgênica. Para soja convencional o inoculante turfoso mostrou-se eficiente, uma vez que foi constatada uma maior massa de 1.000 grãos e maior massa especifica real. Já o inoculante líquido apresentou valores elevados quando avaliado na soja transgênica, pois obteve maiores valores para massas especifica aparente e real, número de grãos germinados no teste de germinação e no teste de envelhecimento acelerado

Boolean dynamics revisited through feedback interconnections

Boolean models of physical or biological systems describe the global dynamics of the system and their attractors typically represent asymptotic behaviors. In the case of large networks composed of several modules, it may be difficult to identify all the attractors. To explore Boolean dynamics from a novel viewpoint, we will analyse the dynamics emerging from the composition of two known Boolean modules. The state transition graphs and attractors for each of the modules can be combined to construct a new asymptotic graph which will (1) provide a reliable method for attractor computation with partial information; (2) illustrate the differences in dynamical behavior induced by the updating strategy (asynchronous, synchronous, or mixed); and (3) show the inherited organization/structure of the original network’s state transition graph.publishe

Interacting particles at a metal-insulator transition

We study the influence of many-particle interaction in a system which, in the single particle case, exhibits a metal-insulator transition induced by a finite amount of onsite pontential fluctuations. Thereby, we consider the problem of interacting particles in the one-dimensional quasiperiodic Aubry-Andre chain. We employ the density-matrix renormalization scheme to investigate the finite particle density situation. In the case of incommensurate densities, the expected transition from the single-particle analysis is reproduced. Generally speaking, interaction does not alter the incommensurate transition. For commensurate densities, we map out the entire phase diagram and find that the transition into a metallic state occurs for attractive interactions and infinite small fluctuations -- in contrast to the case of incommensurate densities. Our results for commensurate densities also show agreement with a recent analytic renormalization group approach.Comment: 8 pages, 8 figures The original paper was splitted and rewritten. This is the published version of the DMRG part of the original pape