Roller skis are used by cross-country skiers, biathletes and ski-orienteers for their snow-free training and in roller ski competitions. Additionally, much of the current sports research into the physiology and biomechanics of crosscountry skiing is conducted indoors on treadmills using roller skis. For elite athletes, the differences in performance are quite small, thus emphasising the importa...

The promises of Model Based Design have led to the development of numerous methodologies and software tools, especially for the specific or detailed design stages, from controller design to finite element analysis. However, the Model Based Design of actuation systems lacks methodologies and expressive simulation models that are suited to preliminary design, where key technical decisions are tak...

The aim of this project is to develop methods for scaling up roller compaction process from lab scale to pilot scale, to determine the effect of processing parameters of roller compactors at both lab scale (instrumented roller compactor at University of Birmingham, micro-pactor at Pfizer) and pilot scale (mini-pactor from Gerteis) on the attributes of dry-granulated formulations, including the ...

Reducing start and stop time without destroying the pavement surface is important in enhancing productivity of double-drum roller and compact quality of asphalt pavement, but it is difficult in confirming the maximum brake deceleration or start acceleration of double-drum roller. Dynamic analysis is used in studying these questions, and a mathematic model of double-drum roller is established, b...

Linear electro-mechanical actuators are finding increased use in the field of thrust vectoring of launch vehicles. Earlier, linear electro-hydraulic actuators were used especially in the lower stages of the launch vehicles where there is a requirement for large actuation forces. However, electro-mechanical actuators are being scrutinized for this purpose in an effort to provide lighter, cleaner...

This research was conducted to find the gray value of Weight roller weight test against engine RPM a motorized vehicle, torque is desired result. Large but still within reasonable limits fuel use, namely 1:15. After testing using Dyno test, results are processed fuzzy logic. The use rollers indeed proven be able increase machine, can change depending on value, therefore it assisted by system ge...

The working principle and key components of a chain drive residual film recovery machine were studied. A kinematic analysis the soil separation mechanism was completed by applying ADAMS software to obtain trajectory, displacement, velocity acceleration center mass plate link_1 in x- y-directions within effective shaking displacement. field test carried out. When roller contact with chain, chang...

OBJECTIVE To determine the number of fatalities related to roller coasters and examine factors common to multiple incidents. METHODS A case was defined as the death of a person, which was associated with a roller coaster in the United States between 15 May 1994 and 14 May 2004. Cases were identified from four DATA SOURCES (1) Consumer Product Safety Commission, (2) Lexis-Nexis, (3) Medline,...

The polymer solar cells were fabricated by a novel solution coating process, the roller painting. The roller painted film composed of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) has smoother surface than the spin coated film. Since the roller painting is accompanied with shear and normal stresses and is also a s low drying process, the process induces eff...