Previous versions of Thema are still available 1.2 1.1 1.0.
Browse the Thema subject categories hierarchy, or search for a specific term within the hierarchy.
| Notation | Category heading | Add | Mod | ? |
|---|---|---|---|---|
| T | Technology, Engineering, Agriculture, Industrial processes Use for: associated skills, trades & professions |
1.3 | ✽ | |
| TC | Biochemical engineering | |||
| TCB | Biotechnology | |||
| TCBG | Genetic engineering Class here: cloning; stem cell technology. See also: PSAD Bioethics, PSAK Genetics (non-medical) |
✽ | ||
| TCBS | Biosensors See also: TJS Sensors |
✽ |
version detail
- An ellipsis indicates a category has more detailed subcategories
- Click on a category description to reveal these ‘descendant’ subcategories
- Indentation indicates the ancestors and descendants of a category
- Click on the ✽ or ? to see or hide the usage notes
- Search for categories (for example ‘celebrity’) using the search field at the top
- Searches are not case-sensitive, and search both the category headings and any notes
- You don’t need to use complete words (eg ‘celeb’)
- You can also search for Thema codes – these searches must be exact (eg ‘MFGV’)
- Click on a search result category to see it ‘in context’ with its ancestor and descendant categories
- A click on ‘Category heading’ or a blank search returns you to the top level of the hierarchy
- Click on the notation to copy the code to the clipboard