Publicações

 

 

Artigos em revistas


14. "A Simplified Two Layer Model for Light Diffuse Reflectance in Thin Skin Fruits", A Brázio, AM Cavaco and R Guerra, Progress in Agricultural Engineering Sciences 6 , 35–72 (2010)
DOI: 10.1556/Progress.6.2010.3


13. "A preliminary approach to the prediction of 'Rocha' pear skin pigments by vis/nir reflectance spectroscopy", AM Cavaco, MDC Antunes, J Marques da Silva  and R Guerra,  Acta Horticulturae (ISHS) 858:373-378 (2010)


12. "'Rocha' pear firmness predicted by a Vis/NIR segmented model", A Cavaco, P Pinto, MD Antunes, JM Silva, R Guerra, Postharvest Biol. Technol., 51, 311-319 (2009)

11. "Preliminary studies on the non-destructive determination of pear (Pyrus communis L.) var. Rocha ripeness by visible/near infrared reflectance spectroscopy" AM Cavaco, D Antunes, JM da Silva and R Guerra,  Acta Horticulturae (ISHS) 800, 1099-1106 (2008)


10. "A new path integral approximation to photon propagation in turbid media", R. Neves and R. Guerra, Waves Random Complex Media, 18, 669-692 (2008)

9. "Simultaneous determination of the mean and standard deviation of quasi-monodisperse size distributions of microspheres by static light scattering", P. N. Pinto, P: Fernandes and R. Guerra, Measurement Science and Technology, 18, 1209-1223 (2007).

 

8. "A tissue phantom for optical diagnostics based on a suspension of microspheres with a fractal size distribution", D. Passos, J. C. Hebden, P. N. Pinto and R. Guerra, Journal of Biomedical Optics , 10 (6): art. no. 064036, Nov-Dec 2005 (2005).

 

7. "Double Modulation Diode Laser Absorption Spectrometry by Simultaneous Wavelength Modulation and Optically Induced Population Modulation-Application to Trace Element Detection in Window-equipped Graphite Furnaces", J. Gustafsson, F. M. Schmidt, R. Guerra and O. Axner, Spectrochimica Acta B 59 (1): 67-92 (2004)

 

6. "Mie and Debye scattering in dusty plasmas",R. Guerra and J. T. Mendonca, Phys. Rev. E 62 (1): 1190-1201 (2000).

 

5. “Stimulated Raman, Brillouin and dust-Brillouin scattering in dusty plasmas”, R. Guerra, J. T. Mendonça and P. K. Shukla, J. Plasma Phys. 59, 343 (1998)

 

4. “Brownian motion of a dust particle in a plasma”, J. T. Mendonça, A. M. Martins, R. Guerra and P. K. Shukla, Phys. Plasmas 4, 674 (1997)

 

3. “Scattering of electromagnetic waves by counter-rotating vortex streets in plasmas”, R. Guerra, J. T. Mendonça, R. O. Dendy and P. K. Shukla, Phys. Plasmas 3, 901 (1996)

 

2. “Nonlinear coupling between Langmuir and dust acoustic waves in dusty plasmas with dust charge perturbations”, R. Guerra and P. K. Shukla, Physica Scripta T6, 3272 (1996)

 

1. “Multiple scattering of electromagnetic waves by large amplitude drift turbulent vortex streets in a plasma”, D. Resendes, J. T. Mendonça, R. Guerra and P. K. Shukla, Physica Scripta T6, 387 (1996)

 

 

Conferências


13. "Temporal Evolution of Optical Parameters along Fruit Ripening", AM Cavaco, A Brázio and R Guerra, Proceedings of the CIGR Workshop on Image Analysis in Agriculture, 26-28. August 2010, Budapest (2010)

12. A Cavaco, MD Antunes, JM Silva, R Guerra, "Preliminary results on the non-invasive diagnosis of superficial scald in ‘Rocha’ pear by fluorescence imaging", Proceedings of 1st International Workshop on Computer Image Analysis in Agriculture, Potsdam, Germany, 27 – 28 August 2009, Bornimer Agrartechnische Berichte 69, 121-127 (2009)

11. R Guerra, S Almeida, AM Cavaco, MD Antunes, "On the application of spatially resolved reflectance and diffuse light backscattering goniometry to the prediction of firmness in apple 'Bravo de Esmolfe'", Proceedings of the COST Action 924, "Environmentally Friendly and Safe Technologies for Quality of Fruits and Vegetables",   14-16 January 2009, Faro, Portugal, to appear in Acta Horticulturae (2009). 

10. "A First Approach to the Optical and Antioxidant Properties of Propolis Collected at Different Sites of Algarve Region", C Cruz, AM Cavaco, R Guerra, D Antunes, H Guia and MG Miguel, 4th IASME/WSEAS International Conference on ENERGY, ENVIRONMENT, ECOSYSTEMS and SUSTAINABLE DEVELOPMENT (EEESD'08) Algarve, Portugal, June 11-13 (2008)

9. "Comparison of two different integration sphere configurations for ‘Rocha’ pear determination of firmness and soluble solids by Vis/NIR spectroscopy", AM Cavaco, R Guerra, JM Silva, and D Antunes, 4th IASME/WSEAS International Conference on ENERGY, ENVIRONMENT, ECOSYSTEMS and SUSTAINABLE DEVELOPMENT (EEESD'08) Algarve, Portugal, June 11-13 (2008)

8. A.M. Cavaco, D. Antunes, J.M. da Silva and R. Guerra, "Non-destructive determination of pear (Pyrus communis L.) var. ‘Rocha’ ripeness by visible/near infrared reflectance spectroscopy", II Jornadas Ibéricas de Fotoquímica, Universidade do Algarve, Julho de 2007

7. P. Ventura, P. N. Pinto, R. Neves and R. Guerra, "Characterization of an instrument to measure diffuse photon density waves in turbid media", II Jornadas Ibéricas de Fotoquímica, Universidade do Algarve, Julho de 2007

6. R. Neves, P. N. Pinto and R. Guerra, "Near-Infrared Laser Tomography and Path Integrals: Improving the Diffusion Approximation", II Jornadas Ibéricas de Fotoquímica, Universidade do Algarve, Julho de 2007

5. “A simple light scattering based method for characterization of quasi monodisperse microsphere suspensions”, P. Pinto and R. Guerra, Abstracts of EAC (European Aerosol Conference), Budapest 2004, Volume I, Journal of Aerosol Science, pp. S359-360 (2004)

 

4. “Espectroscopia e imagem de tecidos biológicos com luz laser”, R. Guerra, 3ª reunião da Sociedade Portuguesa Interdisciplinar do Laser Médico (SPILM), Cascais, Janeiro de 2003

 

3.  “ Mie and Debye scattering in a dusty plasma”, R. Guerra and J. T. Mendonça, Proceedings of the 25th EPS Conference on Controlled Fusion and Plasma Physics, Prague, July 1998

 

2.  “Stimulated scattering of electromagnetic waves in dusty plasmas”, R. Guerra, J. T. Mendonça and P. K. Shukla, Proceedings of the International Conference on the Physics of Dusty Plasmas, Goa, India, October 1996.

 

1.  “Correlation techniques using scattering of CO2 laser beam”, R. Guerra, J. A. Mendanha Dias, P. H. M. Vaessen e J. T. Mendonça, Proceedings of the 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, July 1994.

 

 

Relatórios

 

 

1. “Keep-in-touch activities on inertial fusion energy”, J. T. Mendonça, R. Azambuja, H. Crespo, J. Davies, J. M. Dias, M. Eloy, G. Figueira, E. Fonseca, R. Guerra, A. Guerreiro, N. Lopes, A. M. Martins, D. Resendes, J. A. Rodrigues e L. O. Silva, Association Euratom/IST 2001 Annual Report, Instituto Superior Técnico/Centro de Fusão Nuclear, 2002