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Government institution · Rio de Janeiro · Brazil

National Nuclear Energy Commission

In research, National Nuclear Energy Commission stands highest in Physical Sciences (#5,585 of 12,888 worldwide), Engineering (#5,684 of 6,636 worldwide) and Materials Science (#2,294 of 2,468 worldwide), 2022–2025.

cnen.gov.brROR OpenAlex
World rank, 2022–2025
#9,319
of 28,054 · #6,631 all time
Rank in Brazil
#128
of 714
Research works
3.1k
▲ 5% vs 2013–17
Citations
37k
11.8 per fractional work
Top-10% rate
8.2%
record average 16.5%
Open access
48%
world 28%

What is National Nuclear Energy Commission known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #5,585 of 12,888 7.3%285 #3720
EngineeringField #5,684 of 6,636 6.7%107 #4511
Materials ScienceField #2,294 of 2,468 7.8%70 #2215

Each strip is that field’s whole ranked pool, with the notch where National Nuclear Energy Commission sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Physical Sciences#3,720 #5,585
  2. Engineering#4,511 #5,684
  3. Materials Science#2,215 #2,294
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.84× its world share, 16 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.63× its world share, 14 worksBiochemistry, Geneti…Immunology and Microbiology: 0.69× its world share, 3 worksImmunology and Micro…Neuroscience: 0.11× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.56× its world share, 1 worksPharmacology, Toxico…Chemical Engineering: 3.12× its world share, 4 worksChemical EngineeringChemistry: 1.95× its world share, 12 worksChemistryComputer Science: 0.23× its world share, 7 worksComputer ScienceEarth and Planetary Sciences: 0.94× its world share, 6 worksEarth and Planetary …Energy: 3.00× its world share, 11 worksEnergyEngineering: 1.76× its world share, 107 worksEngineeringEnvironmental Science: 1.66× its world share, 34 worksEnvironmental ScienceMaterials Science: 4.91× its world share, 70 worksMaterials ScienceMathematics: 0.09× its world share, 0 worksMathematicsPhysics and Astronomy: 3.69× its world share, 33 worksPhysics and AstronomyDentistry: 2.96× its world share, 6 worksDentistryHealth Professions: 0.86× its world share, 9 worksHealth ProfessionsMedicine: 0.49× its world share, 38 worksMedicineNursing: 0.80× its world share, 2 worksNursingVeterinary: 0.40× its world share, 0 worksVeterinaryArts and Humanities: 0.41× its world share, 5 worksArts and HumanitiesBusiness, Management and Accounting: 0.20× its world share, 3 worksBusiness, Management…Decision Sciences: 2.01× its world share, 8 worksDecision SciencesEconomics, Econometrics and Finance: 0.19× its world share, 2 worksEconomics, Econometr…Psychology: 0.07× its world share, 1 worksPsychologySocial Sciences: 0.26× its world share, 13 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Materials Science, 4.9×. Every wedge is a field page.

Who are the top researchers at National Nuclear Energy Commission?

Ranked on the composite score, Henry Delincée, P. Castro and A.L.C.H. Villavicencio lead among researchers whose main affiliation is National Nuclear Energy Commission.

  1. 1 Henry Delincée Brazil · #154,769 worldwide 143 citations · 31 works
  2. 2 P. Castro Brazil · #253,998 worldwide 164 citations · 17 works
  3. 3 A.L.C.H. Villavicencio Brazil · #281,710 worldwide 111 citations · 41 works
  4. 4 D. I. T. Fávaro Brazil · #363,063 worldwide 69 citations · 29 works
  5. 5 Antônio Carlos A. Mól Brazil · #516,784 worldwide 51 citations · 17 works
  6. 6 Orlando Rodrigues Brazil · #572,098 worldwide 5 citations · 19 works
  7. 7 Jorge Mancini‐Filho Brazil · #714,123 worldwide 61 citations · 23 works
  8. 8 M. B. A. Vasconcellos Brazil · #720,170 worldwide 15 citations · 20 works
  9. 9 M. Moralles Brazil · #810,743 worldwide 55 citations · 27 works
  10. 10 Sueli Ivone Borrely Brazil · #820,907 worldwide 72 citations · 19 works
All ranked researchers at National Nuclear Energy Commission

Which keywords describe research at National Nuclear Energy Commission?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Raman Spectroscopy, Environmental Impact, Nanoparticles, Toxicity, Thermal Properties, Nanomaterials, Oxidation Behavior and Microstructural Characterization.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Environmental Impact23▲ 3.4×24 topics
  2. Nanoparticles21▲ 4.1×25 topics
  3. Raman Spectroscopy18▲ 22×6 topics
  4. Nanomaterials17▲ 4.0×12 topics
  5. Biomedical Applications16▲ 3.3×25 topics
  6. Toxicity15▲ 8.4×11 topics
  7. Thermal Properties14▲ 27×4 topics
  8. Nanocomposites12▲ 3.5×14 topics
  9. Oxidation Behavior12▲ 46×2 topics
  10. Microstructural Characterization11▲ 129×1 topic
  11. Nuclear Graphite11▲ 129×1 topic
  12. Health Effects11▲ 4.5×13 topics
  13. Crystal Growth10▲ 9.0×8 topics
  14. Catalysis10▲ 3.6×17 topics
  15. Food Safety9▲ 7.6×6 topics
  16. Ionizing Radiation8▲ 28×2 topics
  17. Water Splitting8▲ 5.4×4 topics
  18. Data Analysis8▲ 7.1×3 topics
  19. Radionuclides8▲ 50×2 topics
  20. Antimicrobial8▲ 6.5×6 topics
  21. Gamma Irradiation7▲ 99×2 topics
  22. Tomography7▲ 9.8×5 topics
  23. Consumer Acceptance7▲ 28×3 topics
  24. Finite Element Analysis7▲ 7.3×3 topics
  25. Molten Salt6▲ 50×1 topic
  26. Nuclear Reactor6▲ 50×1 topic
  27. Oxidation Resistance6▲ 15×3 topics
  28. Gold Nanoparticles6▲ 19×3 topics
  29. Hydrogen Embrittlement6▲ 18×2 topics
  30. Inorganic Scintillators6▲ 47×1 topic
  31. Radiation Detection6▲ 34×2 topics
  32. Scintillation Detectors6▲ 47×1 topic
  33. Clinical Applications6▲ 24×2 topics
  34. Food Irradiation6▲ 276×1 topic
  35. Irradiation Effects6▲ 276×1 topic
  36. Small-Angle Scattering6▲ 27×2 topics
  37. Neutron Activation Analysis6▲ 40×1 topic
  38. Neutron Imaging6▲ 40×1 topic
  39. Nuclear Fuel6▲ 85×1 topic
  40. Radiation Protection6▲ 85×1 topic

Which research topics does National Nuclear Energy Commission publish most on?

By volume in 2022–2025: Graphite, nuclear technology, radiation studies, Nuclear reactor physics and engineering, Radiation Detection and Scintillator Technologies and Radiation Effects and Dosimetry.

Graphite, nuclear techno…11Graphite, nuclear technology, radiation studies: 11 fractional worksNuclear reactor physics …6Nuclear reactor physics and engineering: 6 fractional worksRadiation Detection and Scintillator Technologies: 6 fractional worksRadiation Effects and Dosimetry: 6 fractional worksNuclear and radioactivity studies: 6 fractional worksNuclear Physics and Applications: 6 fractional worksRadioactivity and Radon …5Radioactivity and Radon Measurements: 5 fractional worksNuclear Materials and Properties: 5 fractional worksRisk and Safety Analysis: 4 fractional worksFatigue and fracture mec…4Fatigue and fracture mechanics: 4 fractional works
Materials ChemistryAerospace EngineeringRadiationFood Science4 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Graphite, nuclear technology, radiation studies Materials Chemistry 11 works
  2. 2 Nuclear reactor physics and engineering Aerospace Engineering 6 works
  3. 3 Radiation Detection and Scintillator Technologies Radiation 6 works
  4. 4 Radiation Effects and Dosimetry Food Science 6 works
  5. 5 Nuclear and radioactivity studies Safety, Risk, Reliability and Quality 6 works
  6. 6 Nuclear Physics and Applications Radiation 6 works
  7. 7 Radioactivity and Radon Measurements Radiological and Ultrasound Technology 5 works
  8. 8 Nuclear Materials and Properties Materials Chemistry 5 works
  9. 9 Risk and Safety Analysis Statistics, Probability and Uncertainty 4 works
  10. 10 Fatigue and fracture mechanics Mechanics of Materials 4 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available48.3%not open51.7%

World: 28% of research is openly available.

with international co-authors14.7%domestic only85.3%

World: 19% is written across borders.

How has National Nuclear Energy Commission's research output changed?

Output in 2018–2022 was 5% higher than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Rio de Janeiro

All research institutions in Rio de Janeiro

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.