Intraspecific, interspecific, and seasonal differences in the diet of three mid-sized carnivores in a large neotropical wetland

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A luta pela independência na Guiné-Bissau e os caminhos do projeto educativo do PAIGC: etnicidade como problema na construção de uma identidade nacional

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Phylogeny and micro-habitats utilized by lizards determine the composition of their endoparasites in the semiarid Caatinga of Northeast Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Control of oocyte maturation

Oocyte maturation is a complex process involving nuclear and cytoplasmic maturation. The nuclear maturation is a chromosomal segregation and the cytoplasmic maturation involves the reorganization of the cytoplasmic organelles, mRNA transcription and storage of proteins to be used during fertilization and early embryo development. The mechanism of oocyte maturation in vivo and in vitro still are not totally understood. However it is generally accepted that the second messenger cyclic adenosine monophosphate (cAMP) plays a critical role in the maintenance of meiotic blockage of mammalian oocytes. A relative increase in the level of cAMP within the oocyte is essential for maintaining meiosis block, while a decrease in cAMP oocyte concentration allows the resumption of meiosis. The oocyte cAMP concentration is regulated by a balance of two types of enzymes: adenylate cyclase (AC) and phosphodiesterases (PDEs), which are responsible for the synthesis and degradation of cAMP, respectively. After being synthesized by AC in cumulus cells, cAMP are transferred to the oocyte through gap junctions. Thus, specific subtypes PDEs are able to inhibit or attenuate the spontaneous meiotic maturation of oocytes with PDE4 primarily involved in the metabolism of cAMP in granulosa cells and PDE3 in the oocyte. Although the immature oocytes can resume meiosis in vitro, after being removed from antral follicles, cytoplasmic maturation seems to occur asynchronously with nuclear maturation. Therefore, knowledge of the oocyte maturation process is fundamental for the development of methodologies to increase the success of in vitro embryo production and to develop treatments for various forms of infertility. This review will present current knowledge about the maintenance of the oocyte in prophase arrest, and the resumption of meiosis during oocyte maturation, focusing mainly on the changes that take place in the oocyte.

Heat Treatment and Yb-Fiber Laser Welding of a Maraging Steel

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Métodos diagnósticos para detecção da Leucemia viral felina

The feline leukemia virus (FeLV) was described in 1964 by William Jarrett and collaborators wen find viral particles attached to the membrane of lymphoblasts in cat with lymphoma. The virus belongs to the family Retroviridae, subfamily oncornavirus. With worldwide distribution, the occurrence of FeLV has 1.6% in healthy cats and 10.8% in sick cats in Brazil. The mortality of persistently viremic animals in catteries is about 50% in two years and 80% in three years. In catteries that have endemic feline Coronavirus (FCoV), FeLV and / or Feline Immunodeficiency Virus (FIV), the FeLV infection has greater contribution to mortality. The test for infection and FeLV positive cats segregation is the main way to prevent the spread of infection. The diagnostic methods are based on clinical signs and changes compatible with FeLV infection observed by physical examination, complete blood count, X-ray, bone marrow aspirate and biochemical. The viral p27 protein is produced in infected cells in high amounts and is found in abundance in the cytoplasm and in body fluids enabling diagnosed methods such as enzyme-linked immunosorbent assay - ELISA and direct immunofluorescence, detection of viral genome (Chain Reaction Polymerase - PCR) and detection of the virus by virus isolation. Although diagnostic tests are highly sensitive, it should be made more than a confirmatory test, especially serological due to variable characteristic of the progress of infection

Subsídios para o gerenciamento de resíduos de serviços de saúde em municípios de médio porte: estudo de caso de Araraquara - SP

The Health Care Wastes (HCW) present serious risks to health and to the environment, if incorrectly managed, because in addition to the presence of pathogenic agents, the may pollute the soil and the water. Thus, a study was performed aiming at diagnosing the HCW management in Araraquara (SP), identifying the difficulties of the agents (municipal gestors and managers of institutions which generate this wastes) in implanting the HCW management Plan (HCWMP) proposed by ANVISA, in order to subside the HCWMP implantation. The methodology was based on question applications in health centers selected to be the samples, and on quantitative data related to the phases of Treatment and Final Disposal, provided by DAAE. As a result, it was observed that a great part of the interviewed centers managed these wastes according to norm RDC no 306/ 2004 of ANVISA. However, only 24% of the interviewed centers knew about this norm, and only 22% of them had the HCWMP. The difficulties in managing the HCW concentrated in the correct segregation of theses wastes in the generation source. The large number of people involved in this phase suggests the causes of the difficulties.

Dinâmicas de segregação sócio-espacial no meio urbano

In this study we discuss a range of topics related to urban development from the perspective of connection points between the existence of the individual subjects’ lives. In this connection we identified the signs that express an articulation among subjectivity processes and conditions for interference in the real world, relying on circumscribed remarks about spatial configurations and its uses. This way, the substance of our research is structured upon the concept of fashion brands operating new dynamics of urban lifestyles, a strengthened reliance on the physical body’s appearance and the profusion of a supposed “I”, presented as a spectacle. Taking these assertions as new “trends” on building view-points and contemporary cities, we discuss the implications of these currents on how people gather and organize themselves in the urban landscape, making an effort to comprehend how these vogues reverberate on the (re)production of increasingly segregated cities

Subsídios para elaboração de plano municipal de gestão de resíduos sólidos orgânicos para o município de Rio Claro-SP

The research aims to propose grants for development of Municipal Plan for the Management of Organic Solid Waste generated in the municipality of Rio Claro. The research universe was composed of organic waste generators establishments (markets and grocers). From the registry of commercial establishments provided by the municipal government were identified who presented this typology, which totaled 38 establishments. In this universe the interview was conducted in 15 establishments obtained by directed sampling based on the characteristics of size, type and location. The data collected were the amount generated, disposal of waste, waste separation, collection frequency, reasons for the disposal of waste, frequency of purchase of products. From the data obtained in the field, we estimated the total generation of organic waste in this segment for the municipality. Then, the estimated costs for implementation and operation of a composting center, a way to subsidize the implementation of the management plan was carried out. We opted for the aerobic composting process by the simplicity of operation and because it is a technique already known. The average waste generation was established by tracks (size) with: stores up to 4 boxes (classified as small) generate on average 1511 kg / month, 40% of organic waste, the 5-9 boxes (small/midsize) generate on average 4338 kg / month, 35% organic and the 10 to 19 boxes (midsize) generate on average 7647 kg / month with 32% organic. In total establishments generate 105 t/ month of waste, with 35t / month of organics. 94% of establishments are in font segregation of waste into recyclable, organic and waste, indicating that the proposed management of organic waste is amenable to application without many changes in existing routine in stores. Recyclables are sent for recycling through selective collection held by the cooperative, while the organics are destined for the landfill and feed. The results indicate...

Avaliação estratégica de um plano de gestão de resíduos sólidos com foco nos resíduos orgânicos

One of the greatest problems nowadays is the correct management of solid waste produce in every human activity. On 2010, the “Política Nacional de Resíduos Sólidos” was approved, this law brings directives and instruments to deal with the solid waste issue. The objective of this work is to make a Strategic Assessment on a Solid Waste Management Plan applied to a medium size city. Based on general data about the situation of the solid wastes in Brazil, a first scenario was described. After that, likely scenarios were proposed, taking segregation, treatment and final disposal on account. Finally, those scenarios were compared, mainly in the final volume disposed and costs involved

A personagem Bigger Thomas na obra de Richard Wright e a construção de identidade afro-americana

This paper analyzes the character Bigger Thomas Native Son’s American novel published in 1940 by African-American author Richard Wright. Through this character we try to study more the post-slavery racial issue in a country where racial segregation was legally sustained and how this issue was reflected in society and identity formation of their native sons African-American

As (im)possibilidades da etnomatemática no ensino escolar

This work aims to raise the possibilities of the use of the Ethnomathematics in the teaching of school mathematics, especially in aspects related to socio-cultural issues, in view of its universal character and its importance for the understanding of mathematics as a human construction. The teaching of mathematics is influenced by a belief that mathematics is only for the intelligent. With this, she assumes, consciously or unconsciously, a characteristic of social segregation and intellectual who has served as domination of the masses. Thus, this study may contribute to the teacher entered the school environment offering you one more tool in an attempt to succeed in the teaching and learning. We have forwarded this research in the theoretical literature, gathering input for the near future we can verify their efficacy or, more daring, we can contribute to an educational proposal that has as a prerequisite to sociocultural factors that underlie the teaching and learning of mathematics and that it will meet the real needs of the population

Sala de recursos para deficientes visuais: contribuições para o processo de inclusão escolar

This work is situated in the universe of resource rooms with a focus on the teachinglearning disabled students with low vision and visual in two cities of São Paulo. The paper discusses theoretically the historical emergence of these rooms, the deployment in the State of São Paulo and its importance within the context of school inclusion of students with visual impairments. Its purpose is to conduct a general survey of the operating conditions of the rooms from the perspective of the teacher of students. The results verified the contribution of this service as a complementary tool of the ordinary classroom, the use of specific instructional materials and overall educational performance of students. The results indicate that this type of specialized care while receiving criticism, does not promote segregation, but what about the educational needs of these students, who despite the lack of vision, school performance is equal to or better than the other students in the classroom common, it all depends on family support, and dedication to studies by the student. Research has shown students satisfied with the services provided in the resource room, as well as integration and good relationships between teachers and students. We could also highlight the importance of specific training and mastery of knowledge by the teacher to work with the visually impaired person. At the end the results were sent to the schools of this research object of study so that it can contribute to effective work in the educational process for visually impaired students in resource rooms

Determinação por meio de planejamento de experimentos da influência do lixamento nas medidas de dureza com durômetro portátil de método UCI

The hardness has an important role in quality control, in research studies and metallurgical and mechanical specification, selection and comparison of various materials. This property is of extreme importance in the oil industry because it is a determining factor to ascertain the safety of the material used in pressure vessels and pipelines. Due to the inability to stop the equipment while checking the hardness, the hardness testers are widely used portable method UCI, its great advantage is the fact that an essay fast, simple realization and not be considered a non-destructive testing with a good relationship money. The objective is to determine if there is significant difference in hardness measurements between 80 and 1200 sandpaper using a portable hardness tester UCI method, the material applied in gas storage spheres composition ASTM 516 Gr 70. After determining the number of homogeneity, we performed the hardness profile to isolate the major factors influencing the hardness part: cold rolling and segregation of impurities. Factors Cooling and sanding were analyzed using the method of design of experiments (DOE), in which it was demonstrated that neither variables nor their interactions, has significant influence on the hardness measurements by portable MIC 10. This fact will lead to reduction in time and cost for surface preparation

Crescimeno de apatita na superfície da liga Ti-7, 5Mo empregando tratamento higrotérmico

The objective of the present work was to evaluate surface of experimental alloy Ti-7.5Mo after hydrothermal treatment. Ingots were obtained in arc melting furnace under an argon atmosphere and then homogenized under vacuum at 1100ºC for 86.4 ks to eliminate chemical segregation and after cold worked discs were cutting and grinding. For surface treatment, samples were immersed in a container with NaOH aqueous solution 5M, autoclaved, washed with distilled water. Followed, samples were heat treated and they were soaking in 5xSBF to form an apatite layer on the surface. Surfaces were investigated by, scanning electron microscopy, X-Rays powder diffraction, atomic force microscopy and contact angle, in order to evaluate the wettability of the alloy surface. The results were compared with our previous studies using the group of chemical surface treatments and results shows better condition is 120 minutes in the autoclave