29 Result(s)

Article

Commissioning of a bubble chamber for space radiation dosimetry

This paper reports on the design, construction, and operation of a 1 kg C3F8 bubble chamber intended for applications such as space missions for measurement and monitoring of galactic cosmic rays. The event si...

M. Felizardo, M. Reis in CEAS Space Journal (2022)

Article

Optimization of the Selection of Software Elements in Control Systems with Significantly Different-Speed Processes

We present a comparative analysis of various methods for solving the problem of determining the spectral characteristics of mathematical models of control systems (decision support systems). It is suggested th...

V. V. Khilenko, O. V. Stepanov, I. Kotuliak, M. Reis in Cybernetics and Systems Analysis (2021)

Chapter

Using Geobotanical Tools to Operationalize Map** and Assessment of Ecosystem Services (MAES) in Southern Portugal

As Action 5 of the EU Biodiversity Strategy for 2020 called on EU member states to map and assess ecosystems and evaluate their services (MAES) in national territories, a pilot-project was created to set up a ...

S. Mesquita, J. Capelo, I. Gama… in Tools for Landscape-Scale Geobotany and Co… (2021)

Article

Use of the sea urchin Diadema antillarum (Echinodermata, Echinoidea) as a shelter for non-cryptobenthic juvenile reef fishes

Marine species can act as biogenic sources of habitat structures, increasing the web of interactions between reef fishes and the benthic environment. Among these species, sea urchins seem to play an ecological...

H. Grande, M. Reis, N. F. Carvalho in Marine Biodiversity (2020)

Article

Assessment of tritium distribution in rain, surface and drinking water in Portugal during 2006–2017 period

Water samples from different origins (rain, surface and drinking) collected in Portugal during the years 2006 to 2017 were analyzed for the tritium (³H) activity contents using isotopic enrichment followed by liq...

M. J. Madruga, A. R. Gomes, J. Abrantes… in Journal of Radioanalytical and Nuclear Che… (2020)

Article

Determination of tritium in water using electrolytic enrichment: methodology improvements

The quality control of the method for tritium (³H) determination in water after electrolytic concentration by liquid scintillation counting measurements was improved considering more parameters in the uncertainty...

A. R. Gomes, J. Abrantes, A. Libânio… in Journal of Radioanalytical and Nuclear Che… (2017)

Article

Hydroecological approach for determining the width of riparian buffer zones for providing soil conservation and water quality

Riparian buffer zones have important ecological functions such as sustainability of water quality, reducing sediment accumulation, and preventing erosion. However, it is often very difficult to develop a gene...

T. Dindaroğlu, M. Reis, A. E. Akay… in International Journal of Environmental Sci… (2015)

Article

Astrocyte pathology in the prefrontal cortex impairs the cognitive function of rats

Interest in astroglial cells is rising due to recent findings supporting dynamic neuron–astrocyte interactions. There is increasing evidence of astrocytic dysfunction in several brain disorders such as depress...

A Lima, V M Sardinha, A F Oliveira, M Reis, C Mota, M A Silva… in Molecular Psychiatry (2014)

Article

Fifteen years of nuclear techniques application to suspended particulate matter studies

Acute and chronic exposures to Airborne Particulate Matter (APM) have been linked, in epidemiological studies, to increased mortality and to a wide spectrum of respiratory and cardiovascular disorders. One fac...

S. M. Almeida, M. C. Freitas, M. Reis… in Journal of Radioanalytical and Nuclear Che… (2013)

Article

Use of INAA and PIXE for multipollutant air quality assessment and management

The objective of this paper was to assess the air pollution and the main sources of Air Particulate Matter in the Setúbal urban/industrial area, Portugal. PM_2.5 and PM_2.5–10 were sampled in Nuclepore filters and ...

S. M. Almeida, C. A. Ramos, A. M. Marques… in Journal of Radioanalytical and Nuclear Che… (2012)

Article

Characterization of geomaterials from NE Portugal using k ₀-based instrumental neutron activation analysis (k ₀-INAA) and gamma spectrometry methods

The main objective of this study is the elemental characterization of geomaterial samples (“soils” and Rañas), collected between 2007 and 2008, in the Morais Massif, (NE Mainland of Portugal) by using two complem...

M. Reis, M. C. Freitas, H. M. Dung… in Journal of Radioanalytical and Nuclear Che… (2012)

Article

Sequence analysis of 515 kinase genes in chronic lymphocytic leukemia

X Zhang, M Reis, R Khoriaty, Y Li, P Ouillette, J Samayoa, H Carter, R Karchin… in Leukemia (2011)

Article

Determination of ⁹⁰Sr in Portuguese foodstuffs

The Nuclear and Technological Institute (ITN) has the legal responsibility to carry out the environmental radiological monitoring at a national level. This survey was planned to provide relevant information on...

I. Lopes, M. J. Madruga, A. Mourato… in Journal of Radioanalytical and Nuclear Che… (2010)

Article

Fatigue Behavior of Four High-Mn Twinning Induced Plasticity Effect Steels

Fatigue behavior of four high-Mn (18 to 22 wt pct Mn) steels, after cold rolling and soft annealing, were investigated in reversed plane bending in a high-cycle regime. The surfaces of fatigued specimens were ...

A.S. Hamada, L.P. Karjalainen, A. Ferraiuolo… in Metallurgical and Materials Transactions A (2010)

Article

Knock in of the AKT1 E17K mutation in human breast epithelial cells does not recapitulate oncogenic PIK3CA mutations

An oncogenic mutation (G49A:E17K) in the AKT1 gene has been described recently in human breast, colon, and ovarian cancers. The low frequency of this mutation and perhaps other selective pressures have prevent...

J Lauring, D P Cosgrove, S Fontana, J P Gustin, H Konishi, A M Abukhdeir… in Oncogene (2010)

Article

Rituximab purging and maintenance combined with auto-SCT: long-term molecular remissions and prolonged hypogammaglobulinemia in relapsed follicular lymphoma

We enrolled 23 patients with relapsed follicular lymphoma (FL) in a prospective single-arm study of auto-SCT combined with in vivo rituximab graft purging and post transplant rituximab maintenance. Minimal residu...

L K Hicks, A Woods, R Buckstein, J Mangel, N Pennell… in Bone Marrow Transplantation (2009)