United States of America (USA)

1 December 2018 - 30 November 2019

Subject/journal group: All

The table to the right includes counts of all research outputs for United States of America (USA) published between 1 December 2018 - 30 November 2019 which are tracked by the Nature Index.

Hover over the donut graph to view the FC output for each subject. Below, the same research outputs are grouped by subject. Click on the subject to drill-down into a list of articles organized by journal, and then by title.

Note: Articles may be assigned to more than one subject area.

Count Share
28299 20069.44

Outputs by subject (FC)

Subject Count Share
Earth & Environmental Sciences 4202 2806.21
Chemistry 7116 5178.21
1 0.45
Effects of Metal Work Function and Contact Potential Difference on Electron Thermionic Emission in Contact Electrification
2019-07-01
0.45
358 200.61
580 455.99
671 465.94
400 285.29
314 222
435 329.46
1253 1007.36
330 263.91
511 368.98
124 85.70
85 66.49
70 52.68
656 395.78
93 63.28
1 0.33
71 48.09
320 256.57
267 210.51
95 70.52
115 76.31
1 1
365 250.94
Physical Sciences 7855 5096.49
Life Sciences 12177 9022.18

1 December 2018 - 30 November 2019

View the connected world of international research collaboration. Visualize collaborations by subject or region.

Collaborations between countries

Percentage of collaboration by Share

Hover over the graph to view the percentage of collaboration.

Top 10 collaborators by Share

  • United States of America (USA)
  1. China (4379.27)
    2113.60
    2265.68
  2. 1085.17
    827.79
  3. Germany (1831.89)
    1025.82
    806.07
  4. Canada (1128.56)
    685.89
    442.67
  5. France (1092.83)
    670.78
    422.05
  6. Japan (937.43)
    568.62
    368.80
  7. Australia (707.29)
    412.58
    294.71
  8. Switzerland (700.06)
    423.51
    276.55
  9. South Korea (643.94)
    394.42
    249.52
  10. Italy (606.41)
    370.85
    235.56

Collaboration is determined by the combined fractional count (Share) of United States of America (USA) and the collaborating country.

Top 10 institutions from United States of America (USA)

Institution Count Share
1. Harvard University 2608 933.89
2. Stanford University 1635 633.68
3. Massachusetts Institute of Technology (MIT) 1841 547.20
4. National Institutes of Health (NIH) 977 393.95
5. University of California, Berkeley (UC Berkeley) 1248 380.12
6. Yale University 889 343.58
7. University of California, Los Angeles (UCLA) 1067 340.90
8. University of Michigan (U-M) 927 340.01
9. University of California, San Diego (UC San Diego) 1038 339.52
10. Cornell University 998 321.20

Enhanced profiles

Return to country/territory outputs