Introduction: Due to the non-developed mechanization situation, chainsaw is a widely used tool in Iranian forests. This tool can trigger unwelcome disorders (e.g., white finger syndrome) due to the transmitted vibrations from its handle to the body members. Characterizing these vibrations can result in minimizing the intensity of these disorders. This study aims to investigate the effect of dif...

The inverse dynamic model allows to compute the torques for each of the degrees of freedom of a robot knowing the positions, velocities and accelerations. In contrast, direct dynamic model is used to calculate the positions, velocities and accelerations knowing the torques for each of the degrees of freedom. Most of the times is difficult to obtain the direct dynamic model analytically because ...

tool for most organic chemists working in both academic and industrial laboratories. However, there is an ongoing debate in the scientific community on whether the observed dramatic accelerations of reaction rate are mainly a consequence of the high bulk temperatures attained in microwave chemistry, or whether there is a significant contribution of "nonthermal" effects (e.g. a decrease in trans...

Per-O-methylated cyclodextrins containing a single 2-O-(2-acetate), 2-O-(3-propanoate) or a 6-carboxylate were investigated for glycosidase activity on p-nitrophenyl glycosides. The former two compounds displayed enzyme catalysis giving rate accelerations of 500-1000, while the latter compound gave marginal catalysis. These results show that per-O-methylated cyclodextrins direct substrate bindi...

The main objective of this study is to present new method on the basis of genetic algorithms for attenuation relationship determination of horizontal peak ground acceleration and spectral acceleration. The proposed method employs the optimization capabilities of genetic algorithm to determine the coefficients of attenuation relationships of peak ground and spectral accelerations. This method ha...

Phosphorylation of cardiac myosin binding protein-C (MyBP-C) modulates cardiac contractile function; however, the specific roles of individual serines (Ser) within theM-domain that are targets for b-adrenergic signaling are not known. Recently, we demonstrated that significant accelerations in in vivo pressure development following b-agonist infusion can occur in transgenic (TG) mouse hearts ex...

Phosphorylation of cardiac myosin binding protein-C (MyBP-C) modulates cardiac contractile function; however, the specific roles of individual serines (Ser) within the M-domain that are targets for β-adrenergic signaling are not known. Recently, we demonstrated that significant accelerations in in vivo pressure development following β-agonist infusion can occur in transgenic (TG) mouse hearts e...

A large number of attitude estimation algorithms assume sensor placement along the axis of rotation. These models assume that all measured accelerations are due to gravity, while in reality this is not always the case. By expanding the system model to accommodate centrifugal and tangential accelerations the attitude can be more accurately estimated. This thesis introduces an approach to model a...

The ability to measure six degrees of freedom (6 DOF) head kinematics in motor vehicle crash conditions is important for assessing head-neck loads as well as brain injuries. A method for obtaining accurate 6 DOF head kinematics in short duration impact conditions is proposed and validated in this study. The proposed methodology utilizes six accelerometers and three angular rate sensors (6aω con...