Refractive index tip sensor based on Fabry-Perot cavities formed by a suspended core fibre (2009)
O. Frazão; INESC Porto, J. M. Baptista; INESC Porto, J. L. Santos; INESC Porto, J. Kobelke; IPHT, K. Schuster; IPHT
A Fabry-Perot refractometer based on suspended core fibre is presented. The Fabry-Perot cavities are formed by a section of suspended core fibre between conventional single-mode fibres. This...
M. Mayeh, J. Viegas, P. Srinivasan, P. Marques, J. L. Santos, E. G. Johnson, ...
We present optical sensors based on slotted multimode interference waveguides. The sensor can be tuned to highest sensitivity in the refractive index ranges necessary to detect protein-based...
M. Mayeh, J. Viegas, P. Srinivasan, P. Marques, J. L. Santos, E. G. Johnson, ...
We present optical sensors based on slotted multimode interference waveguides. The sensor can be tuned to highest sensitivity in the refractive index ranges necessary to detect protein-based...
J. P. Carvalho, H. Lehmann, H. Bartelt, F. Magalhães, R. Amezcua-Correa, J. L. Santos, ...
In this work we described an optical fibre sensing system for detecting low levels of methane. The properties of hollow-core photonic crystal fibres are explored to have a sensing head with...
J. P. Carvalho, H. Lehmann, H. Bartelt, F. Magalhães, R. Amezcua-Correa, J. L. Santos, ...
In this work we described an optical fibre sensing system for detecting low levels of methane. The properties of hollow-core photonic crystal fibres are explored to have a sensing head with...
Aref, S. H., Amezcua Correa, R., Carvalho, J. P., Frazao, O., Caldas, P., Santos, J. L., ...
In this work, sensitivity to strain and temperature of a sensor relying on modal interferometry in hollow-core photonic crystal fibers is studied. The sensing structure is simply a piece of...
Pérez Bravo, F., Fuentes, M., Angel, Bárbara, Sánchez, H., Carrasco, Elena, Santos, J. L., ...
The aim of this study was to assess the frequency of fatty acid binding protein 2 (FABP2) Ala54Thr genetic polymorphism and to evaluate its association with obesity and insulin resistance in Chilean...
Carrasco, Elena, Pérez Bravo, F., Dorman, J., Mondragón, A., Santos, J. L.
Study objective and setting The aim of this study is to determine the incidence rate of type 1 diabetes in the metropolitan region of Santiago, Chile from 1 January 1986 to 31 December 2003. Design...
The Impact of El Niño - Southern Oscillation Events on South America (2006)
The presence of ENSO Events in South America is felt in two ways: a) through its effects on both the atmosphere and ocean systems, and b) through its impacts on natural ecosystems (both marine and...
The Impact of El Niño - Southern Oscillation Events on South America (2006)
The presence of ENSO Events in South America is felt in two ways: a) through its effects on both the atmosphere and ocean systems, and b) through its impacts on natural ecosystems (both marine and...
The Impact of El Niño - Southern Oscillation Events on South America (2006)
The presence of ENSO Events in South America is felt in two ways: a) through its effects on both the atmosphere and ocean systems, and b) through its impacts on natural ecosystems (both marine and...
SANTOS, J. L., OCHOA, M. C., PATIÑO, A., AZCONA, C., MARTINEZ, J. A., MARTI, A.
Serotonin has been related to feeding behaviour and body weight control through its suppressive effect on appetite. Conflicting results have been published in the literature regarding the association...
Diagnóstico da pneumonia enzoótica suína pela técnica da imunoperoxidase (2004)
Ribeiro,F.C., Silva,J.C.P., Santos,J.L., Pontes,K.C.S.
Avaliou-se a técnica da imunoperoxidase como método auxiliar para a detecção de Mycoplasma hyopneumoniae em suínos naturalmente infectados. Foram colhidos 80 fragmentos de pulmões de 40 animais...
Influência do orvalho na eficiência do glyphosate sobre Brachiaria decumbens (2004)
Santos,J.L., Constantin,J., Oliveira Jr.,R.S., Inoue,M.H., Sales,J.G.C., Homem,L.M.
O presente trabalho teve como objetivo avaliar a influência da simulação de orvalho na eficiência do herbicida glyphosate sobre Brachiaria decumbens. Para isso, foram realizados dois ensaios...
Costa,G.M., Assis,R.A., Lobato,F.C.F., Abreu,V.L.V., Santos,J.L., Uzal,F.A.
Diarrhea in suckling piglets caused by Clostridium perfringens type A was diagnosed in industrial (technified) swine farms of the states of Minas Gerais and São Paulo (Brazil), based on isolation...
Optical Filters for Fibre Lasers and Amplifiers (2002)
G. Rego, M. Melo, J. L. Santos
The writing of arc-induced long period fibre gratings to be used as optical filters in Er/Yb fibre lasers and for gain flattening in EDFA is discussed. A new approach is presented for the production...
Optical Filters for Fibre Lasers and Amplifiers (2002)
G. Rego, M. Melo, J. L. Santos, Henrique Salgado
The writing of arc-induced long period fibre gratings to be used as optical filters in Er/Yb fibre lasers and for gain flattening in EDFA is discussed. A new approach is presented for the production...
Santos, J. L., Pérez-Bravo, F., Carrasco, E., Calvillán, M., Albala, C.
The human leukocyte antigen (HLA) system plays a crucial role in the autoimmune process leading to childhood diabetes. The purpose of this study was to evaluate the association between type 1...
Histopathological diagnosis of intra- and extrahepatic neonatal cholestasis (1998)
Santos,J.L., Almeida,H., Cerski,C.T.S., Silveira,T.R.
The histopathology of the liver is fundamental for the differential diagnosis between intra- and extrahepatic causes of neonatal cholestasis. However, histopathological findings may overlap and there...
Occult lead intoxication as a cause of hypertension and renal failure (1996)
Sánchez-Fructuoso, A. I., Torralbo, A., Arroyo, M., Luque, M., Ruilope, L. M., Santos, J. L., ...
Background. The true incidence of lead (Pb) overload as a cause of chronic renal failure (CRF) is unknown. Also, it is unclear if CRF per se could generate an increment in the body Pb burden. Most...
Notes on regularity in stochastic matrices. (1984)
Let P be a stochastic matrix. We give a necessary and sufficient condition for the existence of the limt -> 8 ppt from which follows the classical regularity conditions. Another regularity condition...
Congenital circumflex coronary artery fistula with drainage into the left ventricle.
Teno, L A, Santos, J L, Bestetti, R B, Zanardi, A M, Ceccon, C, Castilho, O T
Congenital coronary fistula is a rare heart defect, which consists of a communication between a coronary artery and a cardiac chamber of coronary vessel. Most such fistulae drain into a right heart...
Pairing Competition between Identical and Homologous Chromosomes in Rye and Grasshoppers
Santos, J. L., Orellana, J., Giraldez, R.
Meiotic pairing preferences between identical and homologous but not identical chromosomes were analyzed in spontaneous tetraploid/diploid chimeras of three male grasshoppers (Eyprepocnemis plorans)...
Meiotic pairing preferences between identical and homologous but not identical chromosomes were analyzed in ten induced tetraploid/diploid chimaeral rye plants (Secale cereale) heterozygous for...
Variation in chiasma frequency among eight accessions of Arabidopsis thaliana.
Sanchez-Moran, E, Armstrong, S J, Santos, J L, Franklin, F C H, Jones, G H
Natural variation in meiotic recombination frequency in Arabidopsis thaliana has been assessed by analyzing chiasma frequency variation among a range of geographically and ecologically diverse...
Partial diploidization of meiosis in autotetraploid Arabidopsis thaliana.
Santos, J L, Alfaro, D, Sanchez-Moran, E, Armstrong, S J, Franklin, F C H, Jones, G H
Meiosis was analyzed cytogenetically in autotetraploids of Arabidopsis, including both established lines and newly generated autotetraploid plants. Fluorescent in situ hybridization with 5S and 45S...
Congenital circumflex coronary artery fistula with drainage into the left ventricle.
Teno, L A, Santos, J L, Bestetti, R B, Zanardi, A M, Ceccon, C, Castilho, O T
Congenital coronary fistula is a rare heart defect, which consists of a communication between a coronary artery and a cardiac chamber of coronary vessel. Most such fistulae drain into a right heart...
Pairing Competition between Identical and Homologous Chromosomes in Rye and Grasshoppers
Santos, J. L., Orellana, J., Giraldez, R.
Meiotic pairing preferences between identical and homologous but not identical chromosomes were analyzed in spontaneous tetraploid/diploid chimeras of three male grasshoppers (Eyprepocnemis plorans)...
Meiotic pairing preferences between identical and homologous but not identical chromosomes were analyzed in ten induced tetraploid/diploid chimaeral rye plants (Secale cereale) heterozygous for...
Variation in chiasma frequency among eight accessions of Arabidopsis thaliana.
Sanchez-Moran, E, Armstrong, S J, Santos, J L, Franklin, F C H, Jones, G H
Natural variation in meiotic recombination frequency in Arabidopsis thaliana has been assessed by analyzing chiasma frequency variation among a range of geographically and ecologically diverse...
Partial diploidization of meiosis in autotetraploid Arabidopsis thaliana.
Santos, J L, Alfaro, D, Sanchez-Moran, E, Armstrong, S J, Franklin, F C H, Jones, G H
Meiosis was analyzed cytogenetically in autotetraploids of Arabidopsis, including both established lines and newly generated autotetraploid plants. Fluorescent in situ hybridization with 5S and 45S...