42 Technical research and scientific project studies in the field of X-ray inspection systems for security inspection of people, cargo, containers, vehicles, baggage, luggage, liquid and mail; research and development for others in the field of X-ray inspection systems for security inspection of people, cargo, containers, vehicles, baggage, luggage, liquid and mail; quality control for others, namely, providing quality control services in the field of X-ray inspection systems for security inspection of people, cargo, containers, vehicles, baggage, luggage, liquid and mail; physics research; mechanical research; design, installation, updating and maintenance of computer software; design, installation, updating and maintenance of software systems; design and development of X-ray-, backscatter X-ray-, gamma-ray-, radio frequency-, and neutron-based inspection systems; monitoring of computer systems by remote access to ensure proper functioning, namely, systems for X-ray inspection systems for security inspection of people, cargo, containers, vehicles, baggage, luggage, liquid and mail; design and development of security, surveillance and inspection installations, namely, installations for X-ray inspection systems for security inspection of people, cargo, containers, vehicles, baggage, luggage, liquid and mail; monitoring of security, surveillance and inspection installations to ensure proper functioning, namely, installations for X-ray inspection systems for security inspection of people, cargo, containers, vehicles, baggage, luggage, liquid and mail