994 resultados para Nós sensoriais


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A análise sensorial utiliza os sentidos da visão, olfato, paladar e audição para interpretar as reações dos consumidores às características dos alimentos. A principal vantagem da Análise Descritiva Quantitativa (ADQ) é a possibilidade de avaliação dos atributos sensoriais dos produtos, independentemente da preferência do julgador. O objetivo deste trabalho foi estabelecer os descritores sensoriais, uma das etapas da ADQ, para a avaliação de caquis ?Rama Forte?.

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O trabalho objetiva compreender a relação cidade-rio na Amazônia, levando-se em conta mudanças e permanências referentes à dinâmica e à caracterização de cidades consideradas ribeirinhas em três contextos sub-regionais distintos (Sudeste do Pará, Oeste Paraense e baixo Tocantins), na Amazônia oriental brasileira. A contribuição geográfica da análise assenta-se nas repercussões decorrentes da reestruturação mais recente do espaço amazônico e seus rebatimentos na forma de articulação da cidade com o rio, considerando espaços de vivências (laços) e de fluxos (nós) que marcam a organização intra-urbana atual. Para esse empreendimento, assume-se a perspectiva teórico-metodológica que considera o espaço geográfico como sendo relacional e multidimensional (concebido, percebido e vivido). Do ponto de vista empírico, o procedimento metodológico considerou três cidades paraenses (Marabá, Santarém e Cametá), de nível intermediário na rede urbana regional. A partir delas procurou-se destacar o papel que a cidade ribeirinha amazônica assume em realidades sub-regionais que se inseriram de forma diferenciada nas políticas de ordenamento territorial das últimas décadas. Com base em levantamentos de campo são sistematizados elementos das particularidades socioespaciais das três sub-regiões consideradas e que demarcam espacialidades e territorialidades diversas em nível intra-urbano, sugerindo, em consequência, políticas públicas diferenciadas quando se considera a relação cidade-rio na Amazônia.

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O trabalho objetiva compreender a relação cidade-rio na Amazônia, levando-se em conta mudanças e permanências referentes à dinâmica e à caracterização de cidades consideradas ribeirinhas em três contextos sub-regionais distintos (Sudeste do Pará, Oeste Paraense e baixo Tocantins), na Amazônia oriental brasileira. A contribuição geográfica da análise assenta-se nas repercussões decorrentes da reestruturação mais recente do espaço amazônico e seus rebatimentos na forma de articulação da cidade com o rio, considerando espaços de vivências (laços) e de fluxos (nós) que marcam a organização intra-urbana atual. Para esse empreendimento, assume-se a perspectiva teórico-metodológica que considera o espaço geográfico como sendo relacional e multidimensional (concebido, percebido e vivido). Do ponto de vista empírico, o procedimento metodológico considerou três cidades paraenses (Marabá, Santarém e Cametá), de nível intermediário na rede urbana regional. A partir delas procurou-se destacar o papel que a cidade ribeirinha amazônica assume em realidades sub-regionais que se inseriram de forma diferenciada nas políticas de ordenamento territorial das últimas décadas. Com base em levantamentos de campo são sistematizados elementos das particularidades socioespaciais das três sub-regiões consideradas e que demarcam espacialidades e territorialidades diversas em nível intra-urbano, sugerindo, em consequência, políticas públicas diferenciadas quando se considera a relação cidade-rio na Amazônia.

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Apresenta-se, neste trabalho, um estudo realizado sobre a qualidade de enlace e alcance de conectividade entre os nós de uma rede de sensores sem fio, a partir de dois indicadores: o de intensidade de sinal recebido e o de qualidade de enlace. O ambiente agrícola considerado foi um vinhedo cultivado sob cobertura plástica, cujas variáveis ambientais de importância foram monitoradas, por influenciarem no desenvolvimento fisiológico das videiras, afetando o rendimento e a qualidade das uvas produzidas. A incorporação de tecnologias que permitam um melhor gerenciamento dessa variabilidade microclimática é importante para a viticultura brasileira, bem como a realização de levantamentos experimentais para aperfeiçoar o uso das redes de sensores sem fio em ambientes agrícolas. Dos resultados obtidos, quantificou-se a interferência que os vegetais exercem sobre a comunicação, principalmente perto do dossel das videiras, sendo discutidos no trabalho.

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O material é componente do Curso de Especialização em Saúde da Pessoa Idosa da UNA-SUS/UFMA (Unidade 03, do módulo 07). Trata-se de um recurso educacional interativo que apresenta as dificuldades de percepção e avaliação da dor em idosos, quando estes encontram-se impossibilitados de comunicar-se verbalmente, devido à coexistência de inúmeros fatores como afasia, diminuição sensorial, depressão, perda de memória, dentre outros.

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As doenças cardiovasculares são a principal causa de mortalidade no mundo contemporâneo e dentre os fatores de risco para o desenvolvimento de tais doenças destacam-se a hipertensão arterial sistêmica e o diabetes mellitus. Realidade que incita gestores e trabalhadores do Sistema Único de Saúde a efetivar ações que visem o controle dessas doenças. O presente trabalho teve como objetivo elaborar um projeto de intervenção para o enfrentamento de um problema considerado prioritário pela Equipe de Saúde da família São Lucas de Conceição das Alagoas-MG: a ausência do HiperDia. O objetivo geral foi implantar o Programa HiperDia com efetiva utilização da nova linha guia do Programa HiperDia da Secretaria Estadual de Saúde de Minas Gerais na rotina da unidade. A metodologia adotada para a condução do grupo é a educação em saúde por meio de grupos. A intervenção foi iniciada. As avaliações realizadas pela equipe indicam que o grupo HiperDia contribuirá para o controle da pressão arterial sistêmica e da glicemia, diminuindo as emergências e os danos irreversíveis das doenças; fomentar o empoderamento da população por meio da compreensão da importância da prevenção da doença e da promoção de saúde; reduzir a livre demanda no prontoatendimento; melhorar a qualidade de vida da população; combater o tabagismo e demais fatores de risco para as doenças crônico-degenerativas e fortalecer o trabalho em equipe e os vínculos com a comunidade

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Current literature has elucidated a new phenotype, metabolically healthy obese (MHO), with risks of cardiovascular disease similar to that of normal weight individuals. Few studies have examined the MHO phenotype in an aging population, especially in association with subclinical CVD. This cross sectional study population consisted of 208 octogenarians and older. Anthropometrics, biochemical, and radiological parameters were measured to assess obesity, metabolic health (assessed by the National Cholesterol Education Program -Adult Treatment Panel (NCEP-ATP III) criteria), and subclinical measures of CVD. The prevalence of MHO was 13.5% (N = 28). No significant association with MHO was noted for age, coronary artery calcium score, cIMT, or hs-CRP > 3 mg/dl (p = NS). Our results suggest that the MHO phenotype exists in the elderly; however, subclinical CVD measures were not different in sub-group analysis suggesting traditional metabolic risk factor algorithms may not be accurate in the very elderly.

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The main aim of this investigation was to verify the relationship of the variables measured during a 3-minute all-out test with aerobic (i.e., peak oxygen uptake [(Equation is included in full-text article.)] and intensity corresponding to the lactate minimum [LMI]) and anaerobic parameters (i.e., anaerobic work) measured during a 400-m maximal performance. To measure force continually and to avoid the possible influences caused by turns, the 3-minute all-out effort was performed in tethered swimming. Thirty swimmers performed the following tests: (a) a 3-minute all-out tethered swimming test to determine the final force (equivalent to critical force: CF3-MIN) and the work performed above CF3-MIN (W'3-MIN), (b) a LMI protocol to determine the LMI during front crawl swimming, and (c) a 400-m maximal test to determine the (Equation is included in full-text article.)and total anaerobic contribution (WANA). Correlations between the variables were tested using the Pearson's correlation test (p ≤ 0.05). CF3-MIN (73.9 ± 13.2 N) presented a high correlation with the LMI (1.33 ± 0.08 m·s; p = 0.01) and (Equation is included in full-text article.)(4.5 ± 1.2 L·min; p = 0.01). However, the W'3-MIN (1,943.2 ± 719.2 N·s) was only moderately correlated with LMI (p = 0.02) and (Equation is included in full-text article.)(p = 0.01). In summary, CF3-MIN determined during the 3-minute all-out effort is associated with oxidative metabolism and can be used to estimate the aerobic capacity of swimmers. In contrast, the anaerobic component of this model (W'3-MIN) is not correlated with WANA.

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Spinocerebellar ataxia type 1 (SCA1), spinocerebellar ataxia type 2 (SCA2) and Machado-Joseph disease or spinocerebellar ataxia type 3 (MJD/SCA3) are three distinctive forms of autosomal dominant spinocerebellar ataxia (SCA) caused by expansions of an unstable CAG repeat localized in the coding region of the causative genes. Another related disease, dentatorubropallidoluysian atrophy (DRPLA) is also caused by an unstable triplet repeat and can present as SCA in late onset patients. We investigated the frequency of the SCA1, SCA2, MJD/SCA3 and DRPLA mutations in 328 Brazilian patients with SCA, belonging to 90 unrelated families with various patterns of inheritance and originating in different geographic regions of Brazil. We found mutations in 35 families (39%), 32 of them with a clear autosomal dominant inheritance. The frequency of the SCA1 mutation was 3% of all patients; and 6 % in the dominantly inherited SCAs. We identified the SCA2 mutation in 6% of all families and in 9% of the families with autosomal dominant inheritance. The MJD/SCA3 mutation was detected in 30 % of all patients; and in the 44% of the dominantly inherited cases. We found no DRPLA mutation. In addition, we observed variability in the frequency of the different mutations according to geographic origin of the patients, which is probably related to the distinct colonization of different parts of Brazil. These results suggest that SCA may be occasionally caused by the SCA1 and SCA2 mutations in the Brazilian population, and that the MJD/SCA3 mutation is the most common cause of dominantly inherited SCA in Brazil.

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Moyamoya is a chronic progressive cerebrovascular disease with characteristic angiographic findings and a clinical picture with episodes of transient ischemic attacks, headache, seizures, hemiparesis, which may resolve after surgical treatment. We describe the case of a girl with the typical findings of the disease, comparing them before and after surgery with the use of neuropsychological tests, neurological examination and laboratory tests.

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Huntington disease (HD) is a progressive neurodegenerative disorder with autosomal dominant inheritance, characterized by choreiform movements and cognitive impairment. Onset of symptoms is around 40 years of age and progression to death occurs in approximately 10 to 15 years from the time of disease onset. HD is associated with an unstable CAG repeat expansion at the 5' and of the IT15 gene. We have genotyped the CAG repeat in the IT15 gene in 44 Brazilian individuals (42 patients and 2 unaffected family members) belonging to 34 unrelated families thought to segregate HD. We found one expanded CAG allele in 32 individuals (76%) belonging to 25 unrelated families. In these HD patients, expanded alleles varied from 43 to 73 CAG units and normal alleles varied from 18 to 26 CAGs. A significant negative correlation between age at onset of symptoms and size of the expanded CAG allele was found (r=0.6; p=0.0001); however, the size of the expanded CAG repeat could explain only about 40% of the variability in age at onset (r2=0.4). In addition, we genotyped 25 unrelated control individuals (total of 50 alleles) and found normal CAG repeats varying from 16 to 33 units. The percentage of heterozigocity of the normal allele in the control population was 88%. In conclusion, our results showed that not all patients with the HD phenotype carried the expansion at the IT15 gene. Furthermore, molecular diagnosis was possible in all individuals, since no alleles of intermediate size were found. Therefore, molecular confirmation of the clinical diagnosis in HD should be sought in all suspected patients, making it possible for adequate genetic counseling.

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In Brazil the adoption of several models of cattle confinement leads to special conditions for management methods in dairy production, which can be improved by the use of technology that assures better herd management. Indexes relating environmental variables to production are applied for the prediction of milk production. The values of temperature and relative humidity, rain index, solar radiation and pasture soil temperature are generally considered potential stress agents for cows. The objective of this research was to develop an index for predicting milk production for high productivity Jersey milking cows lodged in semi confinement in tropical conditions. The experiment considered two treatments: A - the cows waited for 30 minutes prior to milking in a room with a shower associated to a fan; B - the cows did not have access to this room (control). Other than the waiting period, the cows had access to pasture. Differences in the effect of average production were not statistically significant. The analysis for studying the effect of the variables and designing the model led to a statistical model relating the variables milk production and rain index, as well as the maximum soil temperature of pasture, and milk production.

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The difficulty in adapting European dairy cows breeds in Brazil affect considerably the milk production sector. Brazilian climatic conditions are not totally favorable and the development of new tecnologies is needed for the animals express their genetic potential, as well as their best feed conversion. An economical analysis of the applied investment in the free-stall climatization equipment in dairy housing, for estimating studies related to profit, possibility of return investment as well as time for this return is necessary. The objective of this research was to evaluate the influence of climatization investment in the milk production process and analyze the economical aspect of this investment. There were used 470 high productive dairy cows with genetic and morphologic homogeneous characteristics, and analyzed in two similar periods. Investment calculations were done using Excell®. The results were satisfactory and the invested capital was proved to return to the producer in a short term, 57 days.

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Swine production represents an important segment of Brazilian economy, and the possibility of increasing production is eminent mainly if considered the low pork consumption when compared to other meat and the consumption of other countries. The increasing need in the international market demands show that in a near future the commercial barriers will be based on welfare, in the protection of the environment as well as in the worker's legislation. Little knowledge is available in the subject of worker's standards in the environmental agents in rural activities as well as the air quality under Brazilian conditions. The objectives of this research were to apply the main used standards related to noise and gases and to estimate occupational risk using measurements of noise level, hydrogen sulfide, methane and oxygen in swine housing, in piglet's nursery and finishing. The results showed that the continuous noise level were below the one found in the standards, however there were observed differences (P < 0.05) in relation to the noise level measured in piglet's nursing cages and in semi-slatted floor. The respective concentrations of hydrogen sulfide and methane were less than 1 ppm and less than 0,1% by volume, which was lower than the recommended limits in NR-15, CIGR and ACGIH. The oxygen level was 21% in average.

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Knowing the importance that the poultry industry represents for the Brazilian economy, this work, searched to understand and to identify new welfare pointers inherent to the animal that contributed for the increase of the productive effectiveness, studying different behavior reactions in broiler breeders, in climatic chamber. The experiment was delineated as a Latin Square 3x3x3, where the variable: temperature of air, birds ration and birds age had been controlled. The birds of different ages had been lodged in distinct boxes. Observations of the behavior of the birds in two schedules of the day had been made, being one in the morning and the other one in the afternoon, during a period of 15 minutes each through video cameras, installed in the ceiling of the climatic chamber, having no interference of human being in the register of the data. It was verified the influence of the controlled variables in diverse observed behaviors where it was concluded that the presence of food resulted in bigger occurrences of aggressiveness reactions.