2021 tables: Institutions - physical sciences

The 2021 tables are based on Nature Index data from 1 January 2020 to 31 December 2020.

Table criteria

# Institution Share 2019 Share 2020 Count 2020 Change in Adjusted Share 2019-2020*
1 University of Lisbon (ULISBOA), Portugal 21.43 24.48 131 6.3%
2 University of Aveiro (UA), Portugal 8.25 8.50 26 -4.1%
3 University of Porto (UP), Portugal 3.30 5.06 31 42.6%
4 University of Minho (UM), Portugal 2.20 3.47 57 46.4%
5 International Iberian Nanotechnology Laboratory (INL), Portugal 2.65 3.44 21 20.8%
6 University of Coimbra (UC), Portugal 3.20 3.14 64 -8.7%
7 Laboratory of Instrumentation and Experimental Particle Physics (LIP), Portugal 1.90 2.70 110 32.7%
8 New University of Lisbon (UNL), Portugal 1.01 1.11 32 2.4%
9 ISCTE Lisbon University Institute (ISCTE-IUL), Portugal 0.48 1.07 11 108.8%
10 Polytechnic Institute of Lisbon (IPL), Portugal 0.79 1.00 7 17.7%
11 University of Beira Interior (UBI), Portugal 0.96 0.82 7 -20.0%
12 Institute for the Development of New Technologies (UNINOVA), Portugal 0.50 0.50 1 -6.9%
13 INESC Microsystems and Nanotechnologies (INESC MN), Portugal 0.39 0.31 2 -25.6%
14 University of Madeira (UMA), Portugal 0.13 0.17 1 16.4%
15 Polytechnic Institute of Leiria (IPLeiria), Portugal 0.46 0.11 4 -78.2%
15 Portugal Telecom Inovação, S.A. (PTIn), Portugal 0.46 0.11 4 -78.2%
16 University of Évora (UE), Portugal 0.08 3 N/A
17 Cooperativa de Ensino Superior Politécnico e Universitário (CESPU), CRL, Portugal 0.13 0.07 1 -50.1%
18 University of Algarve (UAlg), Portugal 0.05 1 N/A
19 Institute for Systems Engineering and Computers (INESC), Portugal 0.04 1 N/A
20 Portuguese Oncology Institute (IPO), Portugal 0.06 0.03 4 -58.2%
21 Hospital of St. John (CHSJ), Portugal 0.06 0.03 3 -63.2%
22 University of the Azores (UAç), Portugal 0.02 3 N/A
23 Centro Hospitalar do Porto (CH Porto), Portugal 0.05 0.02 3 -56.6%
24 Instituto Português do Mar e da Atmosfera (IPMA), Portugal 0.02 1 N/A
25 Polytechnic Institute of Porto (IPP), Portugal 0.02 0.00 3 -80.5%
25 Artur Salgado - Ortopedia, Lda., Portugal 0.02 0.00 3 -80.5%
25 Centro Hospitalar de Vila Nova de Gaia/Espinho (CHVNG/E), Portugal 0.02 0.00 3 -80.5%
25 Centro de Reabilitação Profissional de Gaia (CRPG), Portugal 0.02 0.00 3 -80.5%
25 Comissão de Coordenação da Região Norte (CCDR-N), Portugal 0.02 0.00 3 -80.5%
25 Instituto Português do Sangue e da Transplantação (IPST), Portugal 0.02 0.00 3 -80.5%
25 Serviço de Utilização Comum dos Hospitais (SUCH), Portugal 0.02 0.00 3 -80.5%
26 Tropical Research Institute (IICT), Portugal 0.00 2 N/A

Footnote

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals, selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at natureindex.com.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2020 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.