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Yeast metabolic state identification by fiber optics spectroscopy

Castro, C. C.; Silva, J. S.; Lopes, Vitor V.; Martins, R. C.

In this manuscript we explore the feasibility of using LWUV-VIS-SWNIR (340 - 1100 nm) spectroscopy to classify Saccharomyces cerevisiae colony structures in YP agar and YPD agar, under different growth conditions, such as: i) no alcohol; ii) 1 % (v/v) Ethanol; iii) 1 % (v/v) 1-Propanol; iv) 1 % (v/v) 1- butanol; v) 1 % (v/v) Isopropanol; vi) 1 % (v/v) (±)-1-Phenylethanol; vii) 1 % (v/v) Isoamyl alcohol; viii) 1...

Data: 2009   |   Origem: Repositório do LNEG

Effects of cocaine, methamphetamine and modafinil challenge on sleep rebound af...

Martins,R.C.S; Andersen,M.L; Shih,M.C; Tufik,S

Sleep loss is both common and critically relevant to our society and might lead to the abuse of psychostimulants such as amphetamines, cocaine and modafinil. Since psychoactive substance abuse often occurs within a scenario of sleep deficit, the purpose of this investigation was to compare the sleep patterns of rats challenged with cocaine (7 mg/kg, ip), methamphetamine (7 mg/kg, ip), or modafinil (100 mg/kg, i...

Data: 2008   |   Origem: OASIS br

The reciprocal interaction between sleep and type 2 diabetes mellitus: facts an...

Martins,R.C.; Andersen,M.L.; Tufik,S.

Type 2 diabetes mellitus is a systemic disease characterized by intolerance to glucose and peripheral resistance to insulin. This endocrine disease affects fundamental mechanisms of the central nervous system and jeopardizes the balance of vital functions such as the cardiovascular and circadian rhythm. The increased prevalence of metabolic disorders in our society is aggravated by endemic voluntary postponemen...

Data: 2008   |   Origem: OASIS br

Do cultivar, geographical location and crop season influence phenolic profile o...

Amaral, J.S.; Valentão, P.; Andrade, P.B.; Martins, R.C.; Seabra, R.M.

Walnut leaves from nine different cultivars (Arco, Franquette, Hartley, Lara, Marbot, Mayette, Meylannaise, Parisienne and Rego) were studied for their phenolic compounds. Samples were harvested along three consecutive years, at two different geographical locations, in order to evaluate if significant differences in the phenolics composition can be related with genetic, climatic or geographical factors. Nine co...

Data: 2008   |   Origem: Biblioteca Digital do IPB

Sleep deprivation reduces the lymphocyte count in a non-obese mouse model of ty...

Ruiz,F.S.; Andersen,M.L.; Zager,A.; Martins,R.C.S.; Tufik,S.

The objective of the present study was to determine whether sleep deprivation (SD) would promote changes in lymphocyte numbers in a type 1 diabetes model (non-obese diabetic, NOD, mouse strain) and to determine whether SD would affect female and male NOD compared to Swiss mice. The number of lymphocytes in peripheral blood after 24 and 96 h of SD (by multiple platform method) or equivalent period of time in hom...

Data: 2007   |   Origem: OASIS br

Educação ambiental e conservação do bioma cerrado: valoração e uso sustentável.

RIBEIRO, J. F.; OLIVEIRA, M. C. de; SANTOS, J. C. G. dos; SILVA, M. R. da; HAYES, K. M.; BARROS, C. J. da S.; MARTINS, R. C.; ALMEIDA, S. P. de

2006

Data: 2006   |   Origem: OASIS br

Educação ambiental e a utilização sustentável de espécies nativas do cerrado em...

OLIVEIRA, M. C. de; HAYES, K. M.; RIBEIRO, J. F.; SILVA, M. R. da; MARTINS, R. C.

2006

Data: 2006   |   Origem: OASIS br

Variability in quality of white and green beans during in-pack sterilization

Ávila, I.M.L.B.; Martins, R.C.; Ho, P.; Hendrickx, M.; Silva, C.L.M.

Non-uniformity in process quality was investigated during in-pack thermal sterilization of food products. This was accomplished through the combined application of the Monte Carlo procedure and a reliable mathematical method for process evaluation. Despite the large coefficients of variation found, the optimum quality process could be designed. The influence of the statistical variability of heating rate index ...


Accelerated life testing of frozen green beans (Phaseolus vulgaris, L.) quality...

Martins, R. C.; Lopes, I. C.; Silva, C. L. M.

This study uses the information derived from a computational research for the design of accelerated life testing (ALT) to implement experimentally the step stress methodology for the quantification of frozen green beans (Phaseolus vulgaris, L.) colour and starch degradation kinetics. Colour loss and starch degradation were successfully modelled, respectively, by a first-order reversible and apparent first-order...


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    Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência Programa Operacional da Sociedade do Conhecimento União Europeia