Technology: general issues 18 History of engineering and technology 15 Concrete slabs 6 Materials science 5 History of engineering & technology 4 Bamboo 3 Bamboo reinforced concretes 3 Conservation of buildings and building materials 3 Optical properties 3 Reinforced concrete 3 Waveguides 3 Array waveguide 2 Compressive strength 2 Cost effectiveness 2 Evanescent fields 2 Infrared devices 2 Infrared sensing 2 Mid-infrared sensing 2 Midinfrared 2 Phase matching 2 Plasmons 2 Punching shear 2 Q factor measurement 2 Resonators 2 SLAB 2 Silicon compounds 2 Silicon oxides 2 Silicon photonics 2 Silicon slabs 2 Strip waveguides 2