in this paper, dynamical behavior of the delay mechanism of a special projectile controller is studied, using 3d finite element simulation. the controller considered here is among of high-acceleration mechanical controllers. due to high linear and angular accelerations of the projectile and also explosion risk, experimental investigation is very limited and almost impossible. so, numerical simu...

The auditory sensory end organ is under the control of the central nervous system via efferent projections. Contralateral suppression of otoacoustic emissions (acoustic signatures of the cochlear biomechanical activity) provides a non-invasive approach to assess olivocochlear efferent activity in humans. Using this approach, the present study compared professional musicians with musically-inexp...

Living organisms contain complex biochemical systems of co-adapted molecules, usually proteins, that are difficult to account for through random variation and natural selection. Living organisms also contain complex biomechanical systems of co-adapted parts that are difficult to account for through random variation and natural selection. Similarly, even the simplest living organisms appear to b...

MOTIVATION The robustness of a biochemical network is defined as the tolerance of variations in kinetic parameters with respect to the maintenance of steady state. Robustness also plays an important role in the fail-safe mechanism in the evolutionary process of biochemical networks. The purposes of this paper are to use the synergism and saturation system (S-system) representation to describe a...

Enzymatic reduction of the methylsulfinylxylofuranosyl (MSX) groups in lipoarabinomannan provides proof of the absolute configuration of MSX and a possible biochemical mechanism for oxidative protection in Mycobacterium tuberculosis.

conclusions rectifying the life style is one of the most effective factors on the individuals’ health. an important part in the life style of individuals which is related to fasting is sleeping. early rising, in other words, the optimum time for sleeping is an aspect of fasting and it can be concluded that fasting is meaningful with early rising. sleeping well and having enough time to sleep fo...

background: according to the international reports, brain stroke is the main reason of death and disability. in ischemic stroke, early and precise classification of patients who may profit from conflicting finest therapeutic interference is necessary if enhanced effects in terms of survival are to be talented. due to uncomplicated, easy performance, and inexpensive method the aim of this prelim...

Structural Maintenance of Chromosomes (SMC) protein complexes are found in all three domains of life. They are characterized by a distinctive and conserved architecture in which a globular ATPase 'head' domain is formed by the N- and C-terminal regions of the SMC protein coming together, with a c. 50-nm-long antiparallel coiled-coil separating the head from a dimerization 'hinge'. Dimerization ...

This paper studies aspects of the dynamics of a conventional mechanism of ligand-receptor interactions, with a focus on the stability and location of steady-states. A theoretical framework is developed, which is based upon the rich and deep formalism of irreducible biochemical networks. When represented in this manner, the mass action kinetics of biochemical processes can be clearly seen in ter...