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1

GEM Operation in High-Pressure ${\rm CF}_{4}$: Studies of Charge and Scintillation Properties

Natal da Luz, Hugo, Conceicao, Ana Sofia, Veloso, JoÃo F. C. A., dos Santos, Joaquim M. F., Bento, AntÓnio C. S. S. M., Mir, Jamil A., Ferreira, LuÍs F. Requicha

Journal:

IEEE Transactions on Nuclear Science

Year:

2009

Language:

english

File:

PDF, 315 KB

english, 2009

2

GEM scintillation readout with avalanche photodiodes

Conceição, A S, Ferreira, L F Requicha, Fernandes, L M P, Monteiro, C M B, Coelho, L C C, Azevedo, C D R, Veloso, J F C A, Lopes, J A M, Santos, J M F dos

Journal:

Journal of Instrumentation

Year:

2007

Language:

english

File:

PDF, 1.09 MB

english, 2007

3

An automated scanning ion microbeam system

L.F. Requicha Ferreira, J.M. Calvert

Journal:

Nuclear Instruments and Methods in Physics Research

Year:

1981

Language:

english

File:

PDF, 461 KB

english, 1981

4

The X-ray performance of a driftless gas proportional scintillation counter using short shaping-time constants for pulse analysis

D.S. Covita, P.C.P.S. Simões, L.M.P. Fernandes, E.D.C. Freitas, L.F.Requicha Ferreira, J.F.C.A. Veloso, J.M.F.dos Santos

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2004

Language:

english

File:

PDF, 319 KB

english, 2004

5

Energy non-linearity effects in the response of ionic crystal scintillators to X-rays with energy in the region of the K-absorptions edges: experimental results

L.F.Requicha Ferreira, H.M.N.B.L. Ferreira, J.F.C.A. Veloso, J.M.F.Dos Santos

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2004

Language:

english

File:

PDF, 240 KB

english, 2004

6

Recent advances in X-ray detection with micro-hole and strip plate detector

J.F.C.A. Veloso, J.M. Maia, L.F. Requicha Ferreira, J.M.F. dos Santos, A. Breskin, R. Chechik, Rui de Oliveira

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2004

Language:

english

File:

PDF, 387 KB

english, 2004

7

High-pressure operation of a xenon-GPSC/MSGC hybrid detector for hard X-ray spectrometry

L.C.C. Coelho, J.F.C.A. Veloso, D.S. Covita, L.F. Requicha Ferreira, J.M.F. dos Santos

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2006

Language:

english

File:

PDF, 339 KB

english, 2006

8

Operation of a single-GEM in noble gases at high pressures

F.D. Amaro, A.S. Conceição, J.F.C.A. Veloso, L.C.C. Coelho, L.M.P. Fernandes, L.F. Requicha Ferreira, J.A.M. Lopes, J.M.F. dos Santos

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2007

Language:

english

File:

PDF, 222 KB

english, 2007

9

Stainless-steel oxidation investigation using nuclear techniques for surface studies with an automated scanning proton microbeam: Experimental system and results

J.M. Calvert, L.F. Requicha Ferreira

Journal:

Applications of Surface Science

Year:

1982

Language:

english

File:

PDF, 359 KB

english, 1982

10

MHSP operation in pure xenon

H. Natal da Luz, J.F.C.A. Veloso, F.D. Amaro, L.F. Requicha Ferreira, J.M.F. dos Santos, A Breskin, R. Chechik

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2005

Language:

english

File:

PDF, 169 KB

english, 2005

11

Micro-hole and strip plate-based photosensor

E.D.C. Freitas, J.F.C.A. Veloso, A. Breskin, R. Chechik, F.D. Amaro, L.F. Requicha Ferreira, J.M. Maia, J.M.F. dos Santos

Journal:

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Year:

2007

Language:

english

File:

PDF, 387 KB

english, 2007

12

Development of portable gas proportional scintillation counters for x-ray spectrometry

J. M. F. dos Santos, J. A. M. Lopes, J. F. C. A. Veloso, P. C. P. S. Simões, T. H. V. T. Dias, F. P. Santos, P. J. B. M. Rachinhas, L. F. Requicha Ferreira, C. A. N. Conde

Journal:

X-Ray Spectrometry

Year:

2001

Language:

english

File:

PDF, 351 KB

english, 2001

13

Cascade-Encoder Technique for High Speed Analog-to-Digital Conversion

Ferreira, L. F. Requicha, Conde, C. A. N.

Journal:

IEEE Transactions on Nuclear Science

Year:

1985

Language:

english

File:

PDF, 342 KB

english, 1985

14

Sample entropy of laser Doppler flowmetry signals increases in patients with systemic sclerosis

E. Figueiras, M. Roustit, S. Semedo, L.F. Requicha Ferreira, J.L. Crascowski, A. Humeau

Journal:

Microvascular Research

Year:

2011

Language:

english

File:

PDF, 161 KB

english, 2011

15

A preliminary evaluation of the surface of surgically removed Proplast/Teflon interpositional disc implants from human temporomandibular joints

J. Requicha-Ferreira, S. Myers, C.-C. Ko, J. Swift, J. Fricton

Journal:

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology

Year:

2005

Language:

english

File:

PDF, 44 KB

english, 2005

16

The Secondary Scintillation Output of Xenon in a Uniform Field Gas Proportional Scintillation Counter

Conde, C. A. N., Ferreira, L. Requicha, Ferreira, M. Fatima A.

Journal:

IEEE Transactions on Nuclear Science

Year:

1977

Language:

english

File:

PDF, 572 KB

english, 1977

17

A new laser Doppler flowmeter prototype for depth dependent monitoring of skin microcirculation

Figueiras, E., Campos, R., Semedo, S., Oliveira, R., Requicha Ferreira, L. F., Humeau-Heurtier, A.

Journal:

Review of Scientific Instruments

Year:

2012

Language:

english

File:

PDF, 1.63 MB

english, 2012

18

Self-mixing microprobe for monitoring microvascular perfusion in rat brain

Figueiras, Edite, Oliveira, Ricardo, Lourenço, Cátia F., Campos, Rita, Humeau-Heurtier, Anne, Barbosa, Rui M., Laranjinha, João, Requicha Ferreira, Luis F., Mul, Frits F. M.

Journal:

Medical and Biological Engineering and Computing

Year:

2013

Language:

english

File:

PDF, 1.37 MB

english, 2013

19

[IEEE 2011 1st Portuguese Meeting in Bioengineering ¿ The Challenge of the XXI Century (ENBENG) - Lisbon, Portugal (2011.03.1-2011.03.4)] 1st Portuguese Biomedical Engineering Meeting - Laser Doppler flowmeters for microcirculation measurements

Oliveira, Ricardo, Semedo, Sonia, Figueiras, Edite, Ferreira, Luis F. Requicha, Humeau, Anne

Year:

2011

Language:

english

File:

PDF, 131 KB

english, 2011

20

[IEEE 2012 IEEE 2nd Portuguese Meeting in Bioengineering (ENBENG) - Coimbra, Portugal (2012.02.23-2012.02.25)] 2012 IEEE 2nd Portuguese Meeting in Bioengineering (ENBENG) - Spectral analysis of laser Doppler flowmetry signals

Campos, Rita, Figueiras, Edite, Ferreira, Luis F. Requicha, Humeau-Heurtier, Anne

Year:

2012

Language:

english

File:

PDF, 97 KB

english, 2012

21

[IEEE 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC) - Dresden, Germany (2008.10.19-2008.10.25)] 2008 IEEE Nuclear Science Symposium Conference Record - GEM operation in CF4: Studies of charge and scintillation properties

Natal da Luz, Hugo, Conceicao, Ana S., Veloso, Joao F.C.A., dos Santos, Joaquim M.F., Bento, Antonio C.S.S.M., Mir, Jamil A., Requicha Ferreira, Luis F.

Year:

2008

Language:

english

File:

PDF, 1.25 MB

english, 2008

22

[IEEE 2015 IEEE 4th Portuguese Meeting on Bioengineering (ENBENG) - Porto, Portugal (2015.2.26-2015.2.28)] 2015 IEEE 4th Portuguese Meeting on Bioengineering (ENBENG) - Wireless multi-physiological signal monitor for clinical discharge and readmissions criteria setting and ambulatory usage

Marcal, Tiago, Antunes, Bruno, Ferreira, Requicha, Correia, Carlos, Pires, Diana, Matos, Ana, Simoes, Joao Nuno

Year:

2015

Language:

english

File:

PDF, 219 KB

english, 2015

23

SPIE Proceedings [SPIE Second International Conference on Applications of Optics and Photonics - Aveiro, Portugal (Monday 26 May 2014)] Second International Conference on Applications of Optics and Photonics - Use of laser speckle and entropy computation to segment images of diffuse objects with longitudinal motion

Martins Costa, Manuel Filipe P. C., Nogueira, Rogério Nunes, Vaz, Pedro, Capela, Diana, Pereira, Tânia, Correia, Carlos, Ferreira, Requicha, Humeau-Heurtier, Anne, Cardoso, João

Year:

2014

Language:

english

File:

PDF, 829 KB

english, 2014