Produção de nanocompósito utilizando diferentes fontes de celulose como reforço

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Immunization of Wistar female rats with 255-Gy-irradiated Toxoplasma gondii: Preventing parasite load and maternofoetal transmission

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

In situ evaluation of low-fluoride toothpastes associated to calcium glycerophosphate on enamel remineralization

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Heydrichia (?) poignantii, sp nov (Sporolithaceae, Sporolithales, Rhodophyta), a 100 million year old fossil coralline red alga from north-eastern Brazil, and a new Hauterivian record of Sporolithon from Switzerland

Fossil specimens of Heydrichia (?) poignantii, sp. nov. (Sporolithaceae, Sporolithales, Rhodophyta), representing the first confirmation of the genus in the fossil record, were discovered in thin sections of Albian limestones from the Riachuelo Formation, Sergipe Basin, and in thin sections of Albian -Cenomanian limestones from the Ponta do Mel Formation, Potiguar Basin in north-eastern Brazil. A detailed morphological-anatomical account of the species is provided, and its placement in Heydrichia is discussed in relation to current classification proposals. Comparisons with the four other known species of the genus, all non-fossil, show that H. poignantii is the only known species of Heydrichia in which thalli are encrusting to sparsely warty to horizontally layered with overlapping lamellate branches that commonly appear variously curved or arched, and in which thalli have sporangial complexes that become buried in the thallus. The evolutionary history of Heydrichia remains uncertain, but available data suggest that the genus may have diverged from the sporolithacean genus Sporolithon, known as early as Hauterivian times (c. 129.4-132.9 +/- 1 Ma) from Spain (and newly reported here from Switzerland), or it may have arisen from a graticulacean alga such as Graticula, dating from mid-Silurian times (c. 427-435 Ma). Current data also suggest that Heydrichia is more likely to have arrived in Brazil from Central Atlantic waters than from higher latitude South Atlantic waters. This implies that currently living species in southern Africa probably arose later from ancestors further equatorward in the South Atlantic, although confirming studies are needed. All non-fossil species of Heydrichia are known only from the southern hemisphere.

Usefulness of computed tomography and magnetic resonance imaging in radiotherapy planning for the treatment of brain tumors

Advanced diagnostic techniques such as magnetic resonance imaging and computed tomography have become useful tools for confirmation of presumptive diagnosis of structural lesions in the brain such as encephalic neoplasms in small animal veterinary practice in Colombia, allowing an effective treatment planning that is more specific and less invasive for this type of pathology.

A distorção do conceito de economia no jornal Folha de São Paulo

The work aims to analyse the concept of economics as the science of scarcity is distorced in the newspaper Folha de Sao Paulo. Neoclassical economists characterize the economy as the science that is concerned with the welfare of the people, satisfying their needs. However, the economy in the newspapers of the mainstream media appears in contexts where only the profit of companies and businesses are addressed, leaving aside the problem of economic inequality, unemployment, working conditions and other issues that are also part of economy, but they are hardly concerns of journalists. In this work, the object of study was the notebook Market and content analysis followed the criteria of Bardin (1977). Ten words were chosen in the category science of scarcity and ten words were chosen in the category science of abundance. From these categories, a careful reading was done, counting how many times each word appeared in the newspaper. Also paid attention to the words that appeared and contexts in which they fell journalistic genre. In a second step, interviews were conducted with journalists from economics to know what they mean by the economy and what the guidelines are more common. Data collection and interviews contributed to the interpretation and confirmation on whether or not the distortion of the concept of economy and how it happens

Identificando tipos de personalidade na dança de salão

Many studies have shown a variety of benefits that the practice of Ballroom Dancing can bring, such as leisure and entertainment, the release of tension from a stressful routine, improving relationships, expanding social contacts. The rationale of this study is by the need to evaluate a different sphere of life of people involving the structure that is the personality. The man is humanized in contact with other men and the culture it is almost impossible to grow it in isolation, that is, are the social relationships that allow men to become human and her personality structure. The relationship brought about by the ballroom dancing can benefit the development of personality or simply put individuals in situations that provide a greater understanding of yourself, as this activity has characteristics that greatly facilitate social contact between people who practice it as the relationship between gentleman and lady for a dance, the contact with people in different classes, social events where it is practiced and even the music that is danced. This work aimed to be able to identify the type or types, the most common personalities exist in one group of participants in a course of Ballroom, based on the technique of Enneagram developed and disseminated by Gurdjieff, whose characteristic is to divide into nine different personality types. Participants were 42 students of the extent to ballroom dancing. We administered a questionnaire to identify the personality of each participant and then there was a second observation time the behavior of six participants in the class for confirmation of your psychological type to issofoi used a checklist developed by the author. Was also investigated whether there are differences of gender and psychological types who seek more such activity. The conclusions are that there are a large number of persons type 9, more than 42% and are predominantly male, since... (Complete abstract click electronic access below)

Relações públicas e reputação online: gerenciamento de crise no site americanas.com

The growing need for organizations to make themselves present on the Internet, the study aimed to demonstrate the importance of public relations activity in crisis management and analysis of the crisis in Americanas.com site. It also aims to analyze the electronic scene, highlighting their implications for consumer relations in e-commerce. In addition, as a consequence of conflicts, settles a loss situation, financial and reputation. A crisis begins with planning and communication failures, it is clear that public relations is essential in business today, as interest in integrating their knowledge and opinions, and maintaining a global view of the environment in which it operates. The case study analysis provided confirmation that the public relations face a growing market, which requires qualified and updated to do crisis management, especially in the online environment

Métodos analíticos para a identificação de espécies animais

The food industry has been rapidly modernized, and with this the disposal and the consumption of industrialized food has been increasing continually. These products lose their original morphological characteristics, requiring fast and reliable tests that could help to identify the species in question, as most fraudulent behavior in the milk and dairy industry (meat and fish) is carried out where there is partial or total exchange of the original material for other with less value at market. Nowadays there is a lot of techniques that can be used for the identification of animal species, based on muscle protein, or DNA analysis. In the case of protein based analysis, we can mention several types of electrophoresis and immunologic methods, as ELISA. In the case of DNA based methods, we have several assays that use the amplification of DNA fragments, known as PCR, as proof. All these techniques have advantages and disadvantages that can be affected by factors- the sample condition, or the degree of relation between the species in question. Because of this, it’s necessary that a continuous study looking for the improvement of the available techniques, making sure that the confirmation of food authenticity is in place. This is to ensure the true product value, to comply with labeling regulationand and protect the consumer of frauds

Estudo da motilidade gástrica em ratas prenhes diabéticas e não diabéticas

Several hormonal and physiological changes that occur during pregnancy directly affect gastrointestinal motility (GI), however, very little is known about the relationship between the electrical and mechanical activities of the stomach and its implications. The aim of this study was to compare the female sex hormones, with profiles of gastrointestinal motility using AC biosusceptometry (BAC) in pregnant rats. Seven female Wistar rats (weighing 250-350 g) were used and all procedures were approved by the local Ethics Committee of animal. Laparotomy was performed on anesthetized rats and a magnetic marker (3.5 mm in diameter and 3.0 mm height) was implanted in the distal stomach. After 10 days of recuperation, the mice were put to mate until confirmation of pregnancy. Fed animals were anesthetized (mg pentobarbital 30 / kg) and kept supine for recording the signal with a sensor 30 min BAC placed on the abdominal surface on days 0, 7, 14 and 20 of gestation. Statistical analysis was performed by Student's t test statistical Newman-Keuls and a P value of .05 was considered statistically significant. The frequency of contraction of the stomach was 74 mHz ± 3, 67 ± 7 mHz, 59 mHz ± 6 (p <0.05 vs day -1) and 71 ± 5 mHz on days -0, -7, -14, and -20, respectively. The values of 44 ± 15 pg / mL and 31 ± 9 pg / ml 25 ± 6 pg / ml, 22 ± 9 pg / ml on days -0, -7, -14 and -20, respectively, obtained by 17ß- estradiol were not statistically significant. The values of progesterone were 13 ± 6 pg / ml at 54 ± 15 pg / ml, 127 ± 42 pg / ml (p <0.05 vs day-1), 22 ± 13 pg / mL on day -0, - 7, -14 and -20, respectively. A linear correlation (Pearson's test) between the lower frequency gastric and increased levels of progesterone was 80% (p <0.0000001). Until then, the relationship between changes in motility and hormone were not described in detail, but with the work that we were able to demonstrate the high correlation between progesterone concentration ...

Discuntindo as concepções de professores do segundo ano do ensino fundamental sobre transtorno de déficit de atenção e hiperatividade (TDAH)

Researches show high rates of school failure on the part of students who are unable to learn, referring to them as the idea of an incapable individual and intended not to achieve the goals proposed during the school year. Among the most varied problems posed by teachers and that are instilled in students in order to justify the poor performance of the same, we find Disorder Attention Deficit Hyperactivity Disorder (ADHD). Faced with this problem the objective was to investigate teachers‟ conception of the second year of primary education on ADHD, knowing well the mechanisms of identification, confirmation and referral of these cases, as well as the appropriate treatment and teaching practices suggested. To achieve the proposed objective a literature search was performed supplemented by an empirical study in which we used two instruments to collect data: interviews and observation. The study included empirical two teachers from a state school and two teachers from a private school, all of a midsize city in São Paulo. The interviews showed that teachers of second grade of elementary school consider ADHD a neurological problem in order to be addressed, however, chose not to speak about the treatment carried out by drugs. The observations revealed that the discourse of these teachers are away from their practices, it is worth noting that the differences in these two situations studied - state and private network - are so disparate and interfere in this important teaching practice

Comportamento fractal de superfície da zona de estiramento em aço 300M temperado

Fracture surfaces are the fracture process marks, taht it is characterized by energy release guieded by failure mode. The fracture toughness express this energy em stress and strain terms in pre-cracked samples. The strectch zone is the characteristic region forms by the transition of fatigue fracture and final fracture and it width demonstrate the relation with failure energy release.The quantitative fractography is a broadly tool uses in failure surfaces characterization that it can point to a material’s aspect or a fracture process. The image processing works like an investigation tool, guinding a lot of studies in this area. In order to evaluate the characterization effectivity and it respectivity studies, it used 300M steel that it was thermal treated by an aeronautical process known and it characterized by tensile test and energy dispersive spectroscopy (EDS). The tensile test of this material, made by ASTM E8, allowed the head treatment effectivity confirmation, beyond of mechanics porperties determination. The EDS confirmed the material composition, beyond of base the discussion about fracture mechanism presence. The fracture toughness test has also made, that it works to obtain the fracture surfeaces studies below self-similarity and self-affinity approaches. In front of all the exposed it was possible to conclude that the fractal dimension works like a study parameter of fracture process, allowinf the relation of their values with changes in thickness, which interferes directly in material’s behaviour in fracture toughness approach

Infância, ludicidade e pedagogia hospitalar: encontros e desencontros nas práticas educativas

The aim of this study is to investigate the significance of educational practices aimed at children in non formal education, in this case, specifically, the hospital context. The chosen methodology is part of an investigation conducted in two phases. In the first phase was carried out a theoretical stage, scientifically based studies guided by an historical-cultural and Sociology of Childhood, enabling placement on the particularities of children, the playfulness and the positioning of Pedagogy in the hospital. After this theoretical study was performed the second phase, with the completion of an empirical study with a research and intervention in a hospital playroom, in a public hospital considered a regional center in the northwestern city of São Paulo. The methodological procedures adopted for this empirical study were participant observation, interviews, action research and a questionnaire. Participant observation and action research are conducted within the brinquetodeca in five meetings with about 15 children, interviews were conducted with three family members and the questionnaire was applied to a healthcare professional. Among the results we can mention the following findings: a confirmation of the necessity of work in the hospital directing playful adaptations for the preservation and development of children's learning, and recent publications are scarce about the Hospital Education and underscore the need for the professional practice of education in non-school, the educational activities carried out reveals the possibilities of offering the child the continuation of their educational activities involving the playful and educational, the international and national literature on educational practices in the hospital allow to check ...(Complete abstract click electronic access below)

Avaliação in vitro da ação de substâncias químicas auxiliares, clorexidina e medicações intracanais sobre C. albicans, E. faecalis, E. coli e sua endotoxina em canais radiculares: [recurso eletrônico]

The purpose of this study was to evaluate the antimicrobial activity of chlorhexidine gel 2% as auxiliary chemical substance on the biomechanical preparation (BMP) and medication intracanal (ICM) on C. albicans, E. faecalis, E. coli and their endotoxin in root canals. We used 48 single-rooted human teeth divided into four groups according to dressing ICM: 1) Ca(OH)2 + pyrogen-free saline solution; 2) 2% chlorhexidine gel (CLX); 3) Ca(OH)2 + CLX, and; 4) pyrogen-free saline solution (control group). Were collected the contents of root canals to confirm the presence of microorganisms (confirmation), immediately after instrumentation (1st collection), after 7 days of the BMP (2nd collection), after 14 days of the action of ICM (3rd Collection) and 7 days after removal of the ICM (4 th collection). Were performed: the evaluation of antimicrobial activity and the content analysis of endotoxins for all sampling tests. The results were statistically analyzed using Kruskall-Wallis and Dunn tests with a significance of 5%. It was found that the CLX as auxiliary chemical substance has significantly reduced microorganisms confirmation collection when compared. In relation to the neutralization of endotoxin, it was found that the 1st and 2nd collections presented a decrease of 92.03% and 98.10% in mean percentage respectively, when compared to the confirmation collection. In the 3rd and 4th samplings, the Ca (OH)2 + CLX group showed the best results. It was concluded that the BMP and the ICM were able to eliminate the tested microrganisms, however, they were not able to completely eliminate endotoxins root canal

Correlação entre aneuploidia cromossômica em espermatozóides e taxa de implantação embrionária: subtitulo

Infertility is directly related to chromosomal abnormalities in germ cells. Among them, the aneuploidies are the most frequent chromosomal abnormalities and responsible for embryo implantation failures, miscarriages, fetal losses and newborns with congenital malformations, mental disability and neuropsychomotor developmental delay. Male patients with normal somatic karyotype may present different rates of aneuploidies in sperm, resulting in abnormal embryos. This study aimed to correlate the frequency of chromosomal aneuploidies in spermatozoa with embryo implantation rate in couples undergoing assisted reproductive techniques. The methodology has included chromosomal analysis by GTG banding and molecular cytogenetic study using Fluorescent In Situ Hybridization technique for evaluation of chromosomes 9, X and Y in germ cells of 22 patients referred to the Human Reproduction Service of the Clinical Hospital FMRP-USP. Embryo implantation rates were determined by hormonal evaluation in maternal peripheral blood and ultrasound confirmation. Two patients presented abnormal karyotype, characterized by polymorphism of the heterochromatic region of the long arm of chromosome 9 and a satellite in the short arm of chromosome 22. Both alterations, usually considered variants of normality, have been related to infertility phenotype and miscarriages. Significant differences were detected between couples who presented pregnancy (group 1) and couples with embryo implantation failure (group 2), with higher frequency of aneusomy and diploidy of chromosome 9, as well as total aneuploidy in sperm of group 2 patients. Our results suggest a correlation between aneuploidy and embryo implantation rates, since the infertile group with reproductive failure has showed higher frequency of aneuploidy. Screening for aneuploidies detection in male germ cells should be included in order to decrease embryo implantation failures, miscarriages and fetuses with chromosomal ...