Analyis of Fibre Laser’s Optical Construction from the End of the Beam Guiding Optical Fibre to the Focal Spot Wear Modelling of Total Knee Replacements Investigation of Raw Materials for Sulfurized Vegetable Oil Based Lubricant Additives Application of Artificial Neural Networks in Adsorption Studies. A case study Comparison of Tool Steels for Tube End Flanging Analysis of the Harmful Effects of UV Radiation Generated During Welding Application-oriented use of Laser-induced Periodic Surface Structures Characteristics and Test Aspects of Metal-Based Foams Design of a High Performance Fiber-producing Machine Choosing the Adhesive for Microtensile Bond Strength Tests