Transferência de alimento aos infantes de Callithrix jacchus em uma situação de escassez de recurso alimentar

The genus Callithrix, like other marmosets, presents a cooperative breeding system, characterized by the contribution of parents and non-breeding individuals of the social group in the care of infants. This care is provided through lactation, transport, supervision of infants and food transfers. In this study, we investigated the care of offspring in Callithrix jacchus through the food transfers in family groups under conditions of abundance and scarcity of food resources. We also attempted to verify the relationship between the participation of individuals in the transport of infants and in the food sharing. We observed four families at the Núcleo de Primatologia of the Universidade Federal do Rio Grande do Norte, in a total of seven infants, six twins and a single infant. Each infant was observed twice a week, from 1st to 20th week of life using the methods focal continuous and focal instantaneous sampling with one minute intervals. The observations were carried by 10 minutes and beginning with the supply of food for each family. Two families were tested under conditions of scarcity of food resources (experimental condition) and two others were subjected to conditions of abundant food, both conditions with restricted access to food supply. The condition of food scarcity did not influence the rate of food sharing with the infants that, in general, was considered low. All shares observed were passive sharings. Only one family showed higher levels of food begging, probably due to the loss of the mother during the period of lactation of her offspring. In this family, the dominant and subadult males were primarily responsible for the food sharing. The experimental condition influenced the distance of infants in relation to food source, so the infants in families that received abundant food remained closer to the source. However, it is believed that the place of food consumption was not influenced by experimental condition. There was no relationship between the participation of individuals in the transport and food sharing with their young. Therefore, it is suggested that, in general, the transfer of food in C. jacchus is characterized by tolerance to the demands of caregivers, represented by the passive sharing. Rates of sharing with infants were low, probably due to intra-group competition for food generated by the experiment.

O bibliotecário como mediador no processo de transferência da informação para pessoas com deficiência visual

MAIA, Maria Aniolly Queiroz et al. O bibliotecário como mediador no processo de transferência da informação para pessoas com deficiência visual. In: CONGRESSO BRASILEIRO DE BIBLIOTECONOMIA, 24., DOCUMENTAÇÃO E CIÊNCIA DA INFORMAÇÃO, 2011, Maceió. Anais... Maceió: CBBD, 2011

Efeito da salinidade, densidade de estocagem e da infecção hipodermal e necrose hematopoiética (IHHN) na imunidade do camarão Litopenaeus vannamei cultivados em fazendas do Rio Grande do Norte

The main problem faced by the shrimp industry are the infectious diseases. The hypodermal and hematopoietic necrosis infection (IHHN) is one of the major cause of disease in the cultured shrimp, Litopenaeus vannamei. Environmental changes involving water quality, oxygen concentration, salinity, temperature, stocking density, presence of pathogens, among others, triggering a stressing condition for the cultured shrimp, weakening them and allowing the outbreak of diseases. The stress on the animal leads to a change in the molecules immune response components, which can be used as indicators of shrimp health. Thus, the objective of the present study was to evaluate the effect of salinity, stocking density and IHHNV infection on the L. vannamei shrimp. The immune parameters used to check the shrimp health were the total hemocytes counts (THC), the agglutinating activity (AA) and the clotting time (CT) of the serum of shrimp. These parameters were analyzed in healthy and IHHNV-infected shrimp, grown in low (0-0.5 ), medium (19-24 ) and high (> 38 ) salinity, and extensive (7-12 cam.m-2), semi-intensive (15-25 cam.m-2) and intensive (33-45 cam.m -2) stocking density. The IHHNV infection rate was significantly higher in low salinity (P<0.005) and intensive density (P<0.005), both stressful conditions for L. vannamei. Low salinity significantly increased THC (P<0.05) and decreased and CT (P<0.05) in healthy and infected shrimp, but AA (P<0.05) significantly decreased in healthy shrimp at medium salinity. Culture intensification did not affect the THC, AA and CT of healthy and infected shrimp (P>0.05). The IHHNV infection did not affect any immune parameters of shrimp cultured at different salinities and stocking densities. It is necessary to emphasize that this study was conducted in shrimp grown in ponds, where several environmental factors are acting simultaneously. Thus, further studies are needed about the influence of other environmental factors on the immune parameters of shrimp cultured in pond

Resistotipagem e transferência genética de plasmídios de resistência entre coliformes e vibrios potencialmente patogênicos para o homem isolados de camarão (litopenaeus vannamei) comercializado em Natal-Rio Grande do Norte

Cinquenta amostras de camarão fresco e refrigerado (Litopenaeus vannamei) foram coletadas em diferentes pontos de comercialização na cidade de Natal RN. As amostras foram maceradas em um gral estéril e 25 gramas semeadas em 225mL de APA contendo 1% de NaCl e 25g em 225mL de CL incubadas a 35ºC - 24 horas. O crescimento em APA foi semeado em placas de Ágar TCBS, incubadas a 35ºC-24h para isolamento de Vibrio e Aeromonas. O crescimento do CL foi semeado em Agar EAM, para isolamento de coliformes. Dos 102 isolados, 91 (89,2%) pertenciam ao gênero Vibrio e 11 (10,8%) ao gênero Aeromonas, com predominância de V. cholerae não O1/não O139, V. alginolyticus, V. carchariae e V. parahaemolyticus K- e A. veronii biogrupo sobria , A. jandaei, A. schubertii, A. veronii biogrupo veronii e A. hydrophila. A menor eficiência entre os antimicrobianos foi da AMP (57,8% de resistência) seguida da AMK (29,4%) e TCY (21,6%). As 39 cepas de Vibrio e Aeromonas multirresistentes se distribuíram em 10 perfis distintos, sendo que um revelou cinco marcos (AMP, CHL, NIT, SXT e TCY) em um isolado de V. carchariae de camarão, adquirido em supermercados. O índice MAR, nas 39 cepas variou de 0,28 a 0,42, sugerindo que são de risco na transferência e difusão da resistência na cadeia alimentar. Após a cura plasmidial pelo tratamento com AO de 24 cepas multirresistentes e com resistência intermediária de víbrio e aeromonas escolhidas aleatoriamente, 13 perderam totalmente a resistência e 7 perderam parcialmente, sendo que o maior percentual de perda da resistência ocorreu nas cepas de V. cholerae não O1 e não O139 (6 cepas), se concentrando nos marcos de resistência a AMP (13), AMK (11), TCY(8) e CIP(3). Os resultados da conjugação realizada entre amostras de Vibrio xvi curadas e a E. coli K12C600 demonstraram que 78,5% das culturas de Vibrio testadas revelaram capacidade de transferência para o gene que confere resistência a AMP e 28,5% para a TCY. Dos coliformes, E. coli foi a mais frequente, seguida de Citrobacter spp, isoladas em 40,3% e 27,5% das amostras respectivamente. AMP foi o antimicrobiano menos eficaz, seguido de TCY. As 11 cepas multirresistentes se distribuíram em 9 perfis distintos, um deles constituído de cinco marcos (AMP, NIT, TCY, CHL, SXT), albergados em uma cepa de Klebsiella spp, oriunda de camarão adquirido em supermercado, similar ao resultado obtido em V. carchariae. Conclui-se que, os camarões marinhos frescos e refrigerados, comercializados em Natal-RN evidenciaram contaminação com coliformes, víbrios e aeromonas multirresistentes a antimicrobianos comumente utilizados na terapia médica e veterinária, e que, possivelmente, a transferência de genes de resistência entre bactérias se constitui um sério problema de saúde pública

Podem os programas sociais e de transferência de renda influenciar a oferta de trabalho em atividades não agrícolas? uma análise para as famílias em condição de pobreza no meio rural do nordeste

This study aims to analyze the main effect of social programs and cash transfers on the labor supply of non-farm family members in poverty in rural areas of the Northeast. Among the specific objectives, we sought to investigate the effects of these programs and individual characteristics on the decision of participation and allocation of working hours of parents and children in non-agricultural activities. It was assumed, as a theoretical basis, the model of neoclassical labor supply as well as the principle that the decision of allocation of working hours, non-agricultural, is subject to the initial choice of the worker devote or not the non-agricultural employment . The hypothesis assumes that access to social programs and income transfer contributes to the dismay of rural workers, in poverty, in its decision to participate and offer hours of work in non-agricultural activities. To achieve this objective, we applied the models of Heckman (1979) and Double Hurdle, of Cragg (1971), consisting of associating the decision to participate in the labor market with the decision on the amount of hours allocated. The database used was the National Survey by Household Sampling (PNAD) of 2006. The results of the heads of households showed that transfers of income, although they may have some effect on labor supply rural nonfarm, the magnitude has to say that there may be some dependence on benefits. The estimates for the joint children of 10 to 15 years showed that the programs have negatively influenced participation in suggesting an increase in school participation, although for the allocation of working hours the results were not significant on the incidence of child labor

Simulação da transferência de calor em amostras aquecidas por plasma

The processing of materials through plasma has been growing enough in the last times in several technological applications, more specifically in surfaces treatment. That growth is due, mainly, to the great applicability of plasmas as energy source, where it assumes behavior thermal, chemical and/or physical. On the other hand, the multiplicity of simultaneous physical effects (thermal, chemical and physical interactions) present in plasmas increases the complexity for understanding their interaction with solids. In that sense, as an initial step for the development of that subject, the present work treats of the computational simulation of the heating and cooling processes of steel and copper samples immersed in a plasma atmosphere, by considering two experimental geometric configurations: hollow and plane cathode. In order to reach such goal, three computational models were developed in Fortran 90 language: an one-dimensional transient model (1D, t), a two-dimensional transient model (2D, t) and a two-dimensional transient model (2D, t) which take into account the presence of a sample holder in the experimental assembly. The models were developed based on the finite volume method and, for the two-dimensional configurations, the effect of hollow cathode on the sample was considered as a lateral external heat source. The main results obtained with the three computational models, as temperature distribution and thermal gradients in the samples and in the holder, were compared with those developed by the Laboratory of Plasma, LabPlasma/UFRN, and with experiments available in the literature. The behavior showed indicates the validity of the developed codes and illustrate the need of the use of such computational tool in that process type, due to the great easiness of obtaining thermal information of interest

Análise da magnetohidrodinâmica com transferência de calor em canais de placas paralelas via transformação integral

The main goal of the present work is related to the dynamics of the steady state, incompressible, laminar flow with heat transfer, of an electrically conducting and Newtonian fluid inside a flat parallel-plate channel under the action of an external and uniform magnetic field. For solution of the governing equations, written in the parabolic boundary layer and stream-function formulation, it was employed the hybrid, numericalanalytical, approach known as Generalized Integral Transform Technique (GITT). The flow is sustained by a pressure gradient and the magnetic field is applied in the direction normal to the flow and is assumed that normal magnetic field is kept uniform, remaining larger than any other fields generated in other directions. In order to evaluate the influence of the applied magnetic field on both entrance regions, thermal and hydrodynamic, for this forced convection problem, as well as for validating purposes of the adopted solution methodology, two kinds of channel entry conditions for the velocity field were used: an uniform and an non-MHD parabolic profile. On the other hand, for the thermal problem only an uniform temperature profile at the channel inlet was employed as boundary condition. Along the channel wall, plates are maintained at constant temperature, either equal to or different from each other. Results for the velocity and temperature fields as well as for the main related potentials are produced and compared, for validation purposes, to results reported on literature as function of the main dimensionless governing parameters as Reynolds and Hartman numbers, for typical situations. Finally, in order to illustrate the consistency of the integral transform method, convergence analyses are also effectuated and presented

Modelagem numérica de escoamento em padrão anular com transferência de calor e massa

Annular flow is the prevailing pattern in transport and energy conversion systems and therefore, one of the most important patterns in multiphase flow in ducts. The correct prediction of the pressure gradient and heat transfer coefficient is essential for optimizing the system s capacity. The objective of this work is to develop and implement a numerical algorithm capable of predicting hydrodynamic and thermal characteristics for upflow, vertical, annular flow. The numerical algorithm is then complemented with the physical modeling of phenomena that occurs in this flow pattern. These are, turbulence, entrainment and deposition and phase change. For the development of the numerical model, axial diffusion of heat and momentum is neglected. In this way the time-averaged equations are solved in their parabolic form obtaining the velocity and temperature profiles for each axial step at a time, together with the global parameters, namely, pressure gradient, mean film thickness and heat transfer coefficient, as well as their variation in the axial direction. The model is validated for the following conditions: fully-developed laminar flow with no entrainment; fully developed laminar flow with heat transfer, fully-developed turbulent flow with entrained drops, developing turbulent annular flow with entrained drops, and turbulent flow with heat transfer and phase change

Influência da corrente de pulso, do tempo de pulso e diâmetro de gota sobre a estabilidade da transferência metálica no processo MIG-P

To obtain a process stability and a quality weld bead it is necessary an adequate parameters set: base current and time, pulse current and pulse time, because these influence the mode of metal transfer and the weld quality in the MIG-P, sometimes requiring special sources with synergistic modes with external control for this stability. This work aims to analyze and compare the effects of pulse parameters and droplet size in arc stability in MIG-P, four packets of pulse parameters were analysed: Ip = 160 A, tp = 5.7 ms; Ip = 300 A and tp = 2 ms, Ip = 350 A, tp = 1.2 ms and Ip = 350 A, tp = 0.8 ms. Each was analyzed with three different drop diameters: drop with the same diameter of the wire electrode; droplet diameter larger drop smaller than the diameter of the wire electrode. For purposes of comparison the same was determined relation between the average current and welding speed was determined generating a constant (Im / Vs = K) for all parameters. Welding in flat plate by simple deposition for the MIG-P with a distance beak contact number (DBCP) constant was perfomed subsequently making up welding in flat plate by simple deposition with an inclination of 10 degrees to vary the DBCP, where by assessment on how the MIG-P behaved in such a situation was possible, in addition to evaluating the MIG-P with adaptive control, in order to maintain a constant arc stability. Also high speed recording synchronized with acquiring current x voltage (oscillogram) was executed for better interpretation of the transfer mechanism and better evaluation in regard to the study of the stability of the process. It is concluded that parameters 3 and 4 exhibited greater versatility; diameters drop equal to or slightly less than the diameter of the wire exhibited better stability due to their higher frequency of detachment, and the detachment of the drop base does not harm the maintenance the height of the arc

Modelagem da transferência de massa na remoção do óleo da água produzida por flotação em coluna com uso de tensoativos de origem vegetal

The treatment of oil produced water and its implications are continually under investigation and several questions are related to this subject. In the Northeast Region Brazil, the onshore reservoirs are, in its majority, mature oil fields with high production of water. As this oil produced water has high levels of oil, it cannot be directly discarded into the environment because it represents a risk for contamination of soil, water, and groundwater, or even may cause harm to living bodies. Currently, polyelectrolytes that promote the coalescence of the oil droplets are used to remove the dispersed oil phase, enhancing the effectiveness of the flotation process. The non-biodegradability and high cost of polyelectrolytes are limiting factors for its application. On this context, it is necessary to develop studies for the search of more environmentally friendly products to apply in the flotation process. In this work it is proposed the modeling of the flotation process, in a glass column, using surfactants derived from vegetal oils to replace the polyelectrolytes, as well as to obtain a model that represents the experimental data. In addition, it was made a comparative study between the models described in the literature and the one developed in this research. The obtained results showed that the developed model presented high correlation coefficients when fitting the experimental data (R2 > 0.98), thus proving its efficiency in modeling the experimental data.

Aspectos do cuidado cooperativo em dois grupos de Callithrix jacchus selvagens

The Callitrichidae family presents cooperative breeding, where breeders and non breeders take care of the offspring. The aspects of care analyzed in this study were infant carrying, supervision, proximity and food transfer. Three sets of infants from two wild groups of Callithrix jacchus were studied in the environments of Caatinga (Assu group) and Atlantic Forest (Jundiaí group). The methods used in the study were instantaneous focal sampling (infant carrying, supervision and proximity) and continuous focal sampling (food transfer). In the two sets observed in Assu group, the father carried and transferred food to infants more than the rest of the group. The biggest contribution in supervision was from the father and from another adult male. The members that remained in proximity to the infants in both groups were the younger in the groups (juveniles and sub-adults). In the Jundiaí group, the father and the adult male helper of the group were the main caregivers; one of the sub-adult females was responsible for supervision of the infants. With the disappearance of the reproductive male and one of the sub-adults females in 3º month of infants life, the care was redistributed and the only adult male left in the group was the animal that contributed more in provisioning of the infant. In the Assu group, there were adult females in its composition which were involved in agonistic interactions with breeders and adult males, and seemed to influence their low participation in care. Food transfer initiates early in the development of the infants, as a way to encourage nutritional independence. Different types of food transfer (active food transfer, food steal, food steal attempt, passive food transfer and food handling) were observed in the study and frequency of each one varied with developmental phase and tolerance by the members. One relevant data of the study was the presence of active food transfer in Assu group, since in literature there are very few registers of this type of transfer for this species. It is important that groups from distinct environments and composition be studied for a better understanding of the dynamics of infants development

Política de transferência de renda e desenvolvimento local: o programa Bolsa família no município de Pedra Grande/RN

The Family Scolarship Program while public politics of intersectorial form developed by Social Development Department and Famine Combat having with partner the Education Department and Health Department inaugurate in the country a new integrity way of the public politics, reinforcing a precept of 2004 Social Protection National Politics (PNAS 2004) that places the social protection while allied to the social and human development. The research INCOME TRANSFER AND LOCAL DEVELOPMENT: the family scolarship program in Pedra Grande-RN municipally had as aim to avaluate the permanent Family Scolarship Program as a possible element in local development of Pedra Grande-RN municipally understood as capacity expansion and improvement of life quality from its users. For this means we elaborate specifically the families` socio-economical profile; we avaluate the program repercussion in these families` lives; we analyse in which proportion occurred the capacity expansion and improvement of life quality of the users. The methodologic process was constituted by: literarture review about Income Transfer, Social Vulnerability, Development and Public Politics Avaluation to the criation of a theoric picture analysis. The documental research joined to the Social Development Department and Famine Combat of Pedra Grande Municipally Hall to obtain of the aims, program goals, and the profile of users. And finally, carrying out the interviews with the managers and experts of the Municipally Program and focal groups with the users to avaluate the permanent of the Program starting by the points of view of those ones. It was verified that the program expand the capacity (food, consumer goods and services, bank services access and wages) and improvement in life quality of the users. Nevertheless, there are deficiencies in coming with conditionality and from the use of resources the by families users

Mapa dos programas sociais: transferência de renda e dinâmicas sociais no Rio Grande do Norte (2000-2007)

The question of evaluating the fight against poverty in a given society is very complex task, considering the range of factors that permeate, such as education, culture and economy itself. Come hence the relevance of the theme and its constant presence in discussions on the fruits of public policies, institutional structure and economic development which are the guiding elements of this work, and noted that seeks to highlight the social demographics and most important, the most significant trends and issues pertaining to her. The assessment was initially made in all the municipalities of Rio Grande do Norte doing a verticalilzação to the municipalities Caicó, Pau dos Ferros, Ipueira and Taboleiro Grande. Highlighting the role of a social policy through government programs, such as the Bolsa Familia Program (PBF), which creates the possibility of changes in the socio demographic profile given the importance that the action of this public policy has in shaping the regional economic reality As well as social programs and actions of the government here reported that generate mobility of people and new social demands, such as rural retirements, the benefit of continuing provision (BPC), the Program for the Eradication of Child Labor (PETI) that put on the market of population living on the margins of various forms of consumption. Accordingly, the socio economic profile of the state shows a significant improvement in their social indicators, vital education and redistribution of income, due to the significant improvement in life expectancy in the fall of school drop-out rate and the drop in indicators of Proportion Poor and destitute of the state. Where the fall in the proportion of poor and indigent is strongly associated with an increase in income, from social programs. With this transfer and redistribution of income can be gauged that occurs a strengthening of local economies and an engagement of families with the conditionalities of social programs and PETI Bolsa Familia. Our research concludes that simply raising the rents caused by transfers, presents relevant impacts on the education of young people in beneficiary families. There is no doubt that the programs of transfer income, no facing the social field, representing a mechanism to decrease the most perverse ills of poverty, social and economic inequality that is hungry. For a significant portion of the Brazilian population living below the poverty line, programs for the transfer of income are expressed directly in improving the material conditions of life and indirectly in improving self-esteem of women and all family members receiving encouraging yet the integration family. Experiments have shown that improvements in health and nutrition can be obtained through the implementation of adequate social policies like the programs of transfer income, while social inclusion and economic does not become full

De baixo para cima: implicações socioespaciais da transferência da feira livre na (re)produção do espaço urbano de Nova Cruz-RN (1991-2010)

The present work is about the reproduction of the urban area of Nova Cruz RN, with the objective of analyzing the social and spatial implications of the relocation of the main street market in the city from 1991 on. Nowadays, the city of Nova Cruz takes over importance in the potiguar social and spatial scenario due to its condition of central city which is practiced for decades in Potiguar Agreste Microregion. Beginning with its formation process connected with traveler‟s hostel which assisted the activity of cattle transportation, further in time by the golden era of cotton production in its territory, it was noticed that its importance in relation with the nearby towns has been happening differently throughout time. From the year 1991 on, the town of Nova Cruz has gone through a territory restructuring of its urban area due to the relocation of the open market from Downtown neighborhood to São Sebastião neighborhood. Such territorial movement resulted in a reformation of the town‟s urban space, promoting in both neighborhoods urban growth and the expansion of commercial activity associated with the migration of the commercial center of the city. The transference of the commercial area has caused these processes through the new uses of the land towards the São Sebastião region, it has also caused a decrease in market value of the downtown area as a result of the breakdown of previous existing business activities, their service contribution and the citizen migration, establishing a space and socioeconomic portrait in the neighborhood. From this context, our analysis seeks to understand the social and spatial impacts occurred in Downtown neighborhood, the way in which the production and reproduction of the urban space in São Sebastião neighborhood and the implications resulted from the actions of the administrative power in restructuring of the urban space of Nova Cruz. In order to do so, a bibliographical research was used to compose our theoretic-conceptual mark, discussing the matter with authors such as Roberto Lobato Corrêa, Ana Fani, Milton Santos, Manuel Castells e Heri Lefvbre, among others, discussing on the subject of urban analysis, the concepts of urban space and the process of reproduction of the urban space. A field research was utilized in our area of study by means of primary data gathering through interviews, questionnaire and photographic register. Secondary data gathering was also obtained by means of bibliographical and documental research related to our study object. By these means, it was sought to contribute to the understanding of the urban space through its production and reproduction based upon the discovery of social and spatial practices

Imunidade recíproca e livre concorrência: considerações acerca de sua fruição por empresas estatais

This study begins with a brief overview of tax immu nities in general, dealing with the concept, legal, doctrinal ratings and limits. Then enters into the reciprocal immunity, since its birth in the United States, its justifica tions, until her current developments in the Brazilian Supreme Court, which has expanded it quite considerably. That Court has extended to state owned enterprises, even if pa id by public prices or rates, or if acts somewhat away from its essential functions, es pecially if they are public services provider. Given this linkage, these are also treate d in own topic, grounded in newer doctrinal proposals and less attached to historical formalisms (see such Supremacy of Public Interest over Private one). Public services are approached in its diversity, oblivious to traditional monolithic nature and accu stomed to the modern doctrine of fundamental human rights. It deals also the princip les of free enterprise and free competition, given that the public service provider s have lived intensely in this environment, be they public or private agents. In d ialectical topic, these institutes are placed in joint discussion, all in an attempt to in vestigate their interactions and propose criteria less generic and removed from real ity, to assess the legitimacy of the mutual enjoyment of immunity by certain agents. Sev eral cases of the Court are analyzed individually, checking in each one the app lication of the proposed criteria, such logical-deductive activity and theory of pract ice approach. At the end, the conclusions refer to a reciprocal immunity less rhe torical and ideological and more pragmatic and consequentialist. It is proposed the end to the general rules or abstract formulas of subsumption, with concerns on the one h and the actual maintenance of the federal pact, and on the other by a solid econo mic order without inapt advantages to certain players, which flatly contradicts the co nstitutional premises.