In the printing industry, volatile organic compounds main sources are the uses of organic solvents, fountain solutions and cleaning agents. Nowadays, one circumstance which might confuse the exposure reality is that the majority of solvents which are often used have a faint odour. Therefore, the conditions at offset printing in regard to solvent exposure may seem acceptable to workers. Fortunat...

New innovative approaches for building construction are being developed around the world. One of these is printing cement mixtures which various machines now developed. This paper deals with design an experimental robotic arm research into mixture printing. A generative approach was used and discussed in its development. The results describe solutions obtained using process together to control ...

The paper reported the results of a study concerned with principle operation 3D printing technology using method selective sintering metallic powders, and taking into account their advantages drawbacks. applying DMLS (Direct Metal Laser Sintering) is presented. On basis performed tests, anisotropy printed materials demonstrated. reasons responsible for this phenomenon are identified. presents s...

The number of registered hosts at reaches 3500 while the number of print queues approaches The spectrum of used computing environment is very wide: from and PC’s, through SUN, and machines to the IBM mainframe. In 1994 we used 18 tons of paper. We present a solution for providing print services in such an environment for more than 3500 registered users. The availability of the print service is ...

W elcome to the body shop, where machines are busy constructing new organs, one cell at a time. 3-D bioprinters, cousins to the common inkjet printer, squirt cells into a scaffold, printing and nurturing an organ until it can be transplanted into a patient. 3-D bioprinting might sound like science fiction, but the technology is already in the early stages of development and use. It builds on ex...

Solid freeform fabrication (SFF) allows 3D-printing of arbitrarily shaped structures, directly from computer-aided design (CAD) data. SFF has traditionally focused on printing passive mechanical parts. Advances in this technology and developments in materials science make it feasible to begin the development of a single, compact, robotic SFF system – including a small set of materials which can...

Abstract Metal three-dimensional (3D) printing includes a vast number of operation and material parameters with complex dependencies, which significantly complicates process optimization, materials development, real-time monitoring control. We leverage ultrahigh-speed synchrotron X-ray imaging high-fidelity multiphysics modeling to identify simple yet universal scaling laws for keyhole stabilit...