O manejo dos carneiros antes do acasalamento.

Porque; O carneiro deve; 6 a 8 semanas antes do acasalamento; Melhoria da eficiência do acasalamento; Manejo geral.bitstream/item/55713/1/it06-2000.pd

On the vacuum entropy and the cosmological constant

It is generally accepted that the entropy of an asymptotically de Sitter universe is bounded by the area, in Planck units, of the de Sitter horizon. Based on an analysis of the entropy associated to the vacuum quantum fluctuations, we suggest that the existence of such a holographic bound constitutes a possible explanation for the observed value of the cosmological constant, theoretically justifying a relation proposed 35 years ago by Zel'dovich.Comment: Version to appear in the GRF2003 Special Issue of IJMP

Review of \u3cem\u3eInequality in America: What Role for Human Capital Policies.\u3c/em\u3e James J. Hechman and Alan B. Krueger. Reviewed by Sondra Beverly.

Book review of James J. Heckman and Alan B. Krueger, Inequality in America: What Role for Human Capital Policies? Cambridge, MA: MIT Press, 2004. $40.00 cloth

Vilões, Heróis e Lugares na Telenovela Brasileira Contemporânea: a Favorita e Insensato Coração

O trabalho explora a questão vilão/herói na telenovela brasileira contemporânea a partir dos universos narrativos de A favorita (2008/2009, João Emanuel Carneiro, Rede Globo de Televisão) e de Insensato coração (2011, Gilberto Braga e Roberto Linhares, Rede Globo de Televisão).The essay explores the issues of villains and heroes in contemporary Brazilian soap-opera – focusing on the narrative universes of A favorita (2008/2009, João Emanuel Carneiro, Rede Globo de Televisão) and Insensato coração (2011, Gilberto Braga and Roberto Linhares, Rede Globo de Televisão)

Tilted and crossing vortex chains in layered superconductors

In the presence of the Josephson vortex lattice in layered superconductors, a small c-axis magnetic field penetrates in the form of vortex chains. In general, the structure of a single chain is determined by the ratio of the London [$\lambda$] and Josephson [$\lambda_{J}$] lengths, $\alpha= \lambda/\lambda_{J}$. The chain is composed of tilted vortices at large $\alpha$'s (tilted chain) and at small $\alpha$'s it consists of a crossing array of Josephson vortices and pancake-vortex stacks (crossing chain). We study chain structures at intermediate $\alpha$'s and found two types of phase transitions. For $\alpha\lesssim 0.6$ the ground state is given by the crossing chain in a wide range of pancake separations $a\gtrsim [2-3]\lambda_J$. However, due to attractive coupling between deformed pancake stacks, the equilibrium separation can not exceed some maximum value depending on the in-plane field and $\alpha$. The first phase transition takes place with decreasing pancake-stack separation $a$ at $a=[1-2]\lambda_{J}$, and rather wide range of the ratio $\alpha$, $0.4 \lesssim \alpha\lesssim 0.65$. With decreasing $a$, the crossing chain goes through intermediate strongly-deformed configurations and smoothly transforms into a tilted chain via a second-order phase transition. Another phase transition occurs at very small densities of pancake vortices, $a\sim [20-30]\lambda_J$, and only when $\alpha$ exceeds a certain critical value $\sim 0.5$. In this case a small c-axis field penetrates in the form of kinks. However, at very small concentration of kinks, the kinked chains are replaced with strongly deformed crossing chains via a first-order phase transition. This transition is accompanied by a very large jump in the pancake density.Comment: Proceeding of the NATO ARW "Vortex dynamics in superconductors and other complex systems", Yalta, Crimea, Ukraine, 13-17 September 2004, To be published in the Journ. of Low Temp. Phys., 16 pages, 6 figure

Devolutiva de resultados de investigación a profesionales de la salud en el contexto VIH

Universidade do Estado do Pará. Belém, PA, Brasil.Universidade do Estado do Pará. Belém, PA, Brasil.Universidade do Estado do Rio de Janeiro. Rio de Janeiro, RJ, Brasil.Universidade da Amazônia. Belém, PA, Brasil.Escola Nacional de Saúde Pública Sergio Arouca. Rio de Janeiro, RJ, Brasil.Ministério da Saúde. Secretaria de Vigilância em Saúde. Instituto Evandro Chagas. Curso de Pós-Graduação em Epidemiologia e Vigilância em Saúde. Ananindeua, PA, Brasil.Universidade Federal do Pará. Belém, PA, Brazil.Objective: Reporting the feedback on the results of a multicenter research for healthcare professionals that attend people living with HIV and AIDS in a Specialized Healthcare Center at Belém, state of Pará, Brazil. Method: Case report of the presentation and interpretation of research results, in 2015, totaling 25 participating professionals. The visual resource used was a data projector. Results: Participants reported the importance of the initiative, since, even though it is their right, feedback on research results is uncommon. Among the discussed issues, emerged the need for a culturally appropriate device for adequately strengthening educational practices carried out by healthcare professionals. Conclusion: Feedback on the research results enabled exchange of knowledge about the findings and production of new knowledge. In addition to achieving the social and ethical commitment of research, by promoting dissemination of results, enabling reflections on the reality in which they work

Workforce Development and the Disadvantaged: New Directions for 2009 and Beyond

Assesses the 1998 Workforce Investment Act's successes and limitations. Outlines the changes needed, such as increasing funding and consolidating programs, for a more effective public workforce training system, especially for the young and hard-to-employ

A apologia da preeminencia da arte da esculptura, sobre a de fundir estatuas de metal de Joaquim Carneiro da Silva : notas sobre a questão do estatuto do artista no final de setecentos

As poucas notas que os biógrafos de Carneiro da Silva (1727-1812) nos deixaram indicam a cidade do Porto como seu local de nascimento, notí- cia que nos é oferecida por Cirilo Volkmar Machado. A informação do autor da Colecção de Memórias… é passível de confirmação e de amplia- ção por duas vias. A primeira através do testamento do artista em que se identifica como: "filho Legitimo de Manoel Carneiro da Silva, e de Anna Marques das Neves natural da Cidade do Porto …" acrescentando-se aqui ao local de nascimento a sua filiação; a segunda vertida na legenda de um retrato executado pelo seu discípulo Gregório Francisco de Queiroz [fig. n.º 1], em que se pode ler: "nasceu no Porto em 25 de Julho de 1727"1 , oferecendo-nos uma data objectiva omissa na documentação anteriormente referida

Effect of disorder on the vortex-lattice melting transition

We use a three dimensional stacked triangular network of Josephson junctions as a model for the study of vortex structure in the mixed state of high Tc superconductors. We show that the addition of disorder destroys the first order melting transition occurring for clean samples. The melting transition splits in two different (continuous) transitions, ocurring at temperatures Ti and Tp (>Ti). At Ti the perpendicular-to-field superconductivity is lost, and at Tp the parallel-to-field superconductivity is lost. These results agree well with recent experiments in YBaCuO.Comment: 4 pages + 2 figure

Plant Turnover and the Evolution of Regional Inequalities

Understanding the evolution of earnings inequality is a major research topic with obvious policy implications. While there is widespread belief that institutions are largely responsible for the limited rise in inequality in some European countries, it is also recognised that little or no growth in inequality could be the outcome of market forces alone. However, the role of these market forces in different institutional environments is still not entirely understood. Is the small growth in inequality at the country level reflecting small increases in inequality within and between groups or is it the result of large offsetting changes in different components? Using a large longitudinal matched employer-employee dataset we produce several measures of within and between groups inequality in Portugal for the 1986-1998 period. We focus our attention on changes in the returns to observable characteristics (gender, age and education) of workers and test the hypothesis that these changes reflect developments in the labour market. However, we depart from previous research by shifting focus from the supply side to the demand side of the labour market. Drawing on the results of the by-now large literature on plant turnover we investigate the link between plant entry and exit and changing returns to observable worker characteristics. We argue that Portugal is an interesting case study because, despite very tight regulation and a centralised wage setting system, the level and changes of earnings inequality in recent years make the Portuguese case akin to the US and UK cases rather than to other European cases that share with Portugal similar labour market institutions. Furthermore, high firing costs have previously been identified as the cause for a larger share of employment adjustment occurring in Portugal through plant openings and closings as an alternative to the expansion and contraction of continuing plants. Our analysis is done at the regional level - 28 regions in mainland Portugal (NUTS III) are considered. The advantages of working at the regional level are twofold. First, data for all regions come from the same source - the Personnel Records - which eliminates all issues of comparability that plague many studies dealing with international comparisons. Second, regional comparisons within the same country guarantees a common institutional background which is appropriate given our focus on the role market forces play in shaping patterns of changing earnings inequality. Personnel Records are an administrative survey administered by the Ministry of Employment which is mandatory to all plants with at least one wage earner. Data reported by respondents include characteristics of the plant (location, industry and size), the firm they belong to (location, industry, total employment, annual sales and legal status) and each worker in the plant. Reported worker characteristics include gender, age, education, skill, tenure, earnings and weekly hours of work). Because each plant is assigned a unique invariant identifier, plants can be followed across waves and entries and exits can be identified. On average, the data contains information on 200 thousand plants and 2 million workers per year.