Resurgent transseries have recently been shown to be a very powerful construction in order to completely describe nonperturbative phenomena in both matrix models and topological or minimal strings. These solutions encode the full nonperturbative content of a given gauge or string theory, where resurgence relates every (generalized) multi-instanton sector to each other via large-order analysis. The Stokes phase is the adequate gauge theory phase where an 't Hooft large N expansion exists and where resurgent transseries are most simply constructed. This paper addresses the nonperturbative study of Stokes phases associated to multi-cut solutions of generic matrix models, constructing nonperturbative solutions for their free energies and exploring the asymptotic large-order behavior around distinct multi-instanton sectors. Explicit formulae are presented for the Z 2 symmetric two-cut set-up, addressing the cases of the quartic matrix model in its two-cut Stokes phase; the "triple" Penner potential which yields four-point correlation functions in the AGT framework; and the Painlevé II equation describing minimal superstrings.

RESUMO -O objetivo deste experimento foi avaliar o desenvolvimento, até os 24 meses de idade, de machos de dois sistemas de acasalamento, puros (Charolês -C e Nelore -N) e cruzados ( 1/2 CN, 1/2 NC), submetidos a duas idades de desmame, T3 -desmame aos 3 meses de idade e T7 -desmame aos 7 meses de idade. Os animais foram mantidos do nascimento ao desmame com as vacas em pastagem nativa e, após o desmame, ambos os animais do T3 e T7 foram mantidos por um período de 30 dias em curral e alimentados no cocho. Os animais do T3, do 4 o ao 7 o mês, foram mantidos em pastagem de milheto (Pennisetum americanum). Os pesos aos 3, 7, 12, 18 e 24 meses de idade e os ganhos de peso médios diários (GMD) entre as diferentes idades foram coletados. Não houve interação entre o sistema de acasalamento ou grupo genético dentro do sistema de acasalamento e idade de desmame, para as variáveis estudadas. O GMD dos animais do T3 foi inferior dos 3 aos 7 meses e superior dos 7 aos 12 meses de idade; nas demais fases, não houve diferença no GMD. A única diferença para peso foi aos 7 meses, o qual foi superior para os animais do T7. O peso aos 24 meses foi 424 e 423 kg, respectivamente, para T3 e T7. Animais cruzados apresentaram maior GMD dos 7 aos 18 meses e foram mais pesados aos 18 e 24 meses. A heterose para GMD oscilou entre 0,6 e 29,9% e, para os pesos nas diferentes idades, entre -0,68 e 12,41%. Quando as condições de alimentação são adequadas, o desmame aos 3 meses não influi no peso de abate aos 24 meses de idade.Palavras-chave: Charolês, cruzamento, desmame precoce, heterose, Nelore Performance of Beef Cattle of Different Genetic Groups Weaned at 3 or 7 Months of AgeABSTRACT -The objective of this experiment was to evaluate the performance up to 24 months of age of males from two breeding systems, straightbred (Charolais -C and Nellore -N) and crossbred (1/2 CN, 1/2 NC), submitted to two ages of weaning: T3-weaning at three months of age; T7-weaning at 7 months of age. The calves were maintained from birth to the weaning time with the cows on native pasture and, after weaning, both animals from T3 and T7 were maintained during a period of 30 days in a feedlot. The animals from T3, from 4 to 7 months, were maintained on pearl millet pasture (Pennisetum americanum). The weights at 3, 7, 12, 18 and 24 months of age and the average daily gain (ADG) among the different ages were collected. There was no interaction between the breeding system and genetic group within breeding system and age at weaning for the studied variables. The average daily gain of the T3 calves was lower from 3 to 7 months and higher from 7 to 12 months, afterward no difference was observed in the ADG. The only difference for weight was at 7 months, when T7 calves showed higher weight. The weight at 24 months was 424 and 423 kg, respectively, for T3 and T7. The crossbred animals showed higher ADG from 7 to 18 months and were heavier at 18 and 24 months. The heterosis for ADG ranged from .6 to 29.9%, and for weight at different ages ranged from -.68 to 12.41%. W...

Making use of large-order techniques in asymptotics and resurgent analysis, this work addresses the growth of enumerative Gromov-Witten invariants-in their dependence upon genus and degree of the embedded curve-for several different threefold Calabi-Yau varieties. In particular, while the leading asymptotics of these invariants at large genus or at large degree is exponential, at combined large genus and degree it turns out to be factorial. This factorial growth has a resurgent nature, originating via mirror symmetry from the resurgent-transseries description of the B-model free energy. This implies the existence of nonperturbative sectors controlling the asymptotics of the Gromov-Witten invariants, which could themselves have an enumerative-geometry interpretation. The examples addressed include: the resolved conifold; the local surfaces local P 2 and local P 1 × P 1 ; the local curves and Hurwitz theory; and the compact quintic. All examples suggest very rich interplays between resurgent asymptotics and enumerative problems in algebraic geometry.

-This study evaluated body development and reproductive performance of beef cows whose calves were submitted to early weaning (76 days of age), or conventional weaning (148 days of age). It was used 141 Braford cows that calved in 2004, 2005, and 2006 to evaluate weight at calving at 76 days, weight at calving at 148 days, weight at the beginning and end of the breeding season, variation of the average daily weight, body condition, pregnancy rate, and calving interval.Dams of calves weaned at 148 days of age showed daily weight gain higher body weight and better body condition at 148 days of age. The weights at the end of breeding season and average weight gain during the breeding season were higher in early weaning cows than in conventional cows. Pregnancy rate of early weaning cows (86.34%) was higher than those submitted to weaning at conventional age (55.45%). Pasture interval was similar among early weaning cows and conventional weaning cows. The best benefit on reducing weaning age in pregnancy rate was in primiparous cows. There was significant interaction between weaning age and the year for calving interval and milk production. The early weaning of calves carried out at 76 days of age allows cows to better weight recovery in the post-weaning and breeding periods, improving their body condition and consequently increasing pregnancy rate regarding to cows whose calves suckled until 148 days of age.

The objective of the study was to determine the factors related to beef cattle carcass bruises. Handling, transportation and unloading data from cattle purchased by a slaughterhouse in southern Brazil were obtained to assess their associations with carcass bruising (occurrence or not) and the number of bruises per load. In total, 4338 carcasses from 142 loads of cattle purchased by the company were assessed. The females were cull cows and the males were steers. Independent variables studied included sex (females or males), loading facilities (good, regular or poor), cattle handling (good, regular or poor), transport time from the farm to the slaughterhouse (hours), hauling-truck types, truck animal-load density (kg/m2) and slaughterhouse unloading time (min). For both traits studied (carcasses bruised and number of bruises per load), all of the independent variables showed a significant (P < 0.05) effect. Animal sex is the most important factor on carcass bruising and the number of bruises per load, with females showing 91% more bruises than males. Moderate load densities caused greater bruising than did low (<370 kg/m2) and high (>431 kg/m2) densities. In general, greater bruising was caused by longer transport and unloading times. Bruises were reduced by improving loading facilities from regular to good. Transportation in vehicles with higher load capacities (animal numbers) resulted in greater bruising. Therefore, special handling practices and personnel training measures should be undertaken to mitigate losses pre-slaughter, especially when handling female cattle, which are more vulnerable to developing carcass bruises, possibly due to higher cow reactivity.

The objective of this study was to evaluate the risk of feedlot finishing of steers (22.8 months) and young steers (15.2 months), using or not a correlation between the random input variables (data collected from 2004 to 2010) in the simulation of the Net Present Value (NPV) financial indicator. The animals were fed a diet containing roughage:concentrate ratio of 60:40 for 34 and 143 days, respectively, until they had reached a predetermined slaughter weight of 430 kg. For the NPV simulation, Latin Hypercube sampling was used, with 2000 interactions. The stochastic dominance analysis, test of differences between pairs of curves of cumulative distributions and sensitivity analysis were carried out. The NPV simulation using the correlation resulted in the best option for risk estimate. The confinement of young steers was the alternative of investment most viable than confinement of steers (NPV ≥ 0 of 80.4 vs. 62.3% in the simulation with correlation, respectively). Sensitivity analysis determined the following items had the greatest impact on the estimate of NPV: prices of fat and thin cattle, initial and final weights, diet costs, minimum rate of attractiveness and diet intake.

No abstract

Starting with the holographic p-wave superconductor, we show how to obtain a finite DC conductivity through a non-abelian gauge transformation. The translational symmetry is preserved. We obtain phenomenological similarities with high temperature cuprate superconductors. Our results suggest that a lattice or impurities are not essential to produce a finite DC resistivity with a linear temperature dependence. An analogous field theory calculation for free fermions, presented in the appendix, indicates our results may be a special feature of strong interactions.