Avaliação da fidedignidade dos ensaios de esteróides fecais realizados no Laboratório de Medidas Hormonais do Departamento de Fisiologia da UFRN

NASCIMENTO, H. G. ; FERNANDES, L. C. ; SOUSA, M. B. C. . Avaliação da fidedignidade dos ensaios de esteróides fecais realizados no Laboratório de Medidas Hormonais do Departamento de Fisiologia da UFRN. Publica , v. 2, p. 39-48, 2006.

Sensibilidade da cinética do zinco e avaliação nutricional em crianças submetidas ao teste venoso de tolerância ao zinco

Objective: The purpose of this study was to investigate the kinetics of this micronutrient in schoolchildren between the ages of 6 and 9 years, of both sexes, and to verify its sensitivity in detecting alterations in body zinc status. Methods: Nutritional assessment was performed by body mass index. Food intake, venous zinc tolerance test and zinc kinetics were carried out before and after 3-month oral zinc supplementation. Results: Of the 42 children studied, 76.2% had healthy weight. Only energy, calcium and fiber intake were suboptimal before and after oral zinc supplementation. Serum zinc and total-body zinc clearance, although at normal levels, increased significantly after zinc supplementation. Conclusion: We concluded, therefore, that kinetics is a sensitive tool for detecting changes in body zinc status, even in children without a deficiency of this mineral. Furthermore, kinetics showed a positive response to supplementation and may be a sensitive parameter to evaluate the efficacy of this therapy

Limiar e tolerância à dor em mulheres com fibromialgia: correlação com a capacidade funcional, qualidade do sono e força muscular

O estudo tem como objetivo principal comparar o limiar e a tolerância à dor em mulheres com fibromialgia e mulheres sem sintomas de dor, correlacionando com capacidade funcional, qualidade do sono e força de preensão manual. Trata-se de um estudo descritivo de corte transversal realizado na Universidade Potiguar e na Universidade Federal do Rio Grande do Norte, envolvendo uma equipe multidisciplinar com fisioterapeutas, médicos e educadores físicos. Setenta e duas mulheres foram divididas em dois grupos: grupo com fibromialgia (GF, n = 40) e grupo controle (GC, n = 32) sem sintomas de dor, pareadas por idade e índice de massa corporal. Questionários foram usados para medir capacidade funcional (Fibromyalgia Impact Questionnaire FIQ) e qualidade do sono (Pittsburgh Sleep Quality Index - PSQI). Limiar e tolerância à dor foram medidas por um algômetro de pressão e para determinar força foi usado um dinamômetro de preensão manual. Na análise estatística o teste T de Student foi usado para comparar grupos e o coeficiente de correlação de Spearman foi usado no GF para correlacionar limiar e tolerância à dor com as demais medidas. O GF mostrou piores resultados nas medianas comparado ao GC: limiar de dor 2 kg/cm2 versus 5,5 kg/cm2 (p <0,001), tolerância à dor 2,8 kg/cm2 versus 7,2 kg/cm2 (p <0,001) e força de preensão manual 14,5 kgf versus 25,2 kgf (p <0,001). Adicionalmente os dois questionários apresentaram resultados piores também no GF em relação ao GC, respectivamente: FIQ 65 versus 14,3 (p <0,001) e PSQI 13 versus 5 (p <0,001). No GF foi observada correlação negativa tanto entre o limiar de dor quanto a tolerância à dor com os escores do FIQ e do PSQI. No GF foram observadas correlações positivas tanto entre o limiar de dor (p <0,01) quanto a tolerância à dor (p <0,01) com força de preensão manual. É possível concluir que limiar de dor e tolerância à dor estão correlacionados com capacidade funcional, qualidade do sono e força de preensão manual em mulheres com fibromialgia

Qualidade de sono e qualidade de vida em trabalhadores submetidos a diferentes esquemas de trabalho de uma empresa petroquímica

One of the largest problems of the present time resulting from the economic globalization and the modern technology, of the point of view of the biological rhytms of our organism, it is offering services and production of goods available in 24 o'clock, that it demands organized workers in several work schedules besides the hours of the day. Those schedules cause a series of biopsychosocial consequences in the worker's health, in function of circadian, homeostatic and psychosocial alterations. Accordingly, the aim of this study was to accomplish an evaluation of the effects of several works schedules in the pattern of the sleep wake cycle, anxiety, stress and in the health. We counted with a sample of 274 workers subdivided in 49 daytime worker groups and 225 workers in different shift work schedules with different speeds (rotating shift group, slower day shift group, faster day shift group). From the results analysis it is verified irregularities of the daily activities, stress and alterations in the workers' health in all schedules. It was also verified thata the workers thata presented irregularities in the daily activities were the mroe stressed. On the other hand, the shift works were considered more ansious and associated with bad sleep quality. It was verified that the workers with bad sleep quality were those presented larger levels of dispocional anxiety. There was no statistically significant correlation between bad sleep quality and irregular daily lifestyle. However, it can be affirmed thata shift work schendules doesn't are the main determinant for the circadian alterations, but the answers of the individuals to the shifts work; and that the inadequate behavioural strategies to work with the effects of the shift schedules. In conclusion, individual strategies related to the coping of the work in shift (adaptation and tolerance) should be extolled as indispensable tool in the ergonomic evaluation of the work

Mecanismo de tolerância a falhas através de escalonamento para uma arquitetura reconfigurável de grão grosso

The continuous evolution of integrated circuit technology has allowed integrating thousands of transistors on a single chip. This is due to the miniaturization process, which reduces the diameter of wires and transistors. One drawback of this process is that the circuit becomes more fragile and susceptible to break, making the circuit more susceptible to permanent faults during the manufacturing process as well as during their lifetime. Coarse Grained Reconfigurable Architectures (CGRAs) have been used as an alternative to traditional architectures in an attempt to tolerate such faults due to its intrinsic hardware redundancy and high performance. This work proposes a fault tolerance mechanism in a CGRA in order to increase the architecture fault tolerance even considering a high fault rate. The proposed mechanism was added to the scheduler, which is the mechanism responsible for mapping instructions onto the architecture. The instruction mapping occurs at runtime, translating binary code without the need for recompilation. Furthermore, to allow faster implementation, instruction mapping is performed using a greedy module scheduling algorithm, which consists of a software pipeline technique for loop acceleration. The results show that, even with the proposed mechanism, the time for mapping instructions is still in order of microseconds. This result allows that instruction mapping process remains at runtime. In addition, a study was also carried out mapping scheduler rate. The results demonstrate that even at fault rates over 50% in functional units and interconnection components, the scheduler was able to map instructions onto the architecture in most of the tested applications.

Avaliação da fidedignidade dos ensaios de esteróides fecais realizados no Laboratório de Medidas Hormonais do Departamento de Fisiologia da UFRN

NASCIMENTO, H. G. ; FERNANDES, L. C. ; SOUSA, M. B. C. . Avaliação da fidedignidade dos ensaios de esteróides fecais realizados no Laboratório de Medidas Hormonais do Departamento de Fisiologia da UFRN. Publica , v. 2, p. 39-48, 2006.