1 Subjects: “...Industry 4.0...”

2 Subjects: “...industrial structure...”

3 Subjects: “...Industry 4.0...”

4 Subjects: “...Technology, Engineering, Agriculture, Industrial processes / bicssc...”

5 Subjects: “...process and power industry equipment...”

6 Subjects: “...smart city industry...”

7 Subjects: “...food industry...”

8 Subjects: “...smart city industry...”

9 Subjects: “...Industry 4.0...”

10 Subjects: “...Industry Foundation Classes (IFC)...”

11 “...Hydrogen has been an important feedstock for various industries, and its global market is already...”

12 “... and research tools do not separate but combine the subject industries; they connect the entities...”

13 “... is multidimensional. The ways of finding points of contact between the two industries are highlighted. This is favored...”

14 “... used for heating, electricity, transport, and industry. Therefore, the world is looking for the most...”