Cause Of Curvature Research Articles

PHYSICAL REHABILITATION METHODS FOR CONGENITAL TORTICOLLIS

Congenital muscle torticollis is one of the most common congenital diseases of the musculoskeletal system (5-12%) ranking third. 3 out of 1000 children are diagnosed with torticollis. None of the many theories of the occurrence of curvature fully reveals the mechanism of the occurrence of this pathology. Therefore, it is considered one of the urgent problems of pediatric orthopedics. The aim of the work is to study the methods of physical rehabilitation used in the treatment of congenital muscle torticollis, to find out their effectiveness and to discover new approaches. One of the main causes of curvature is dysfunction of the sternocleidomastoid muscle, which leads to its shortening. Violation, underdevelopment of this muscle is mainly associated with birth trauma. The main symptoms are incorrect position of the head, tilting and turning of the face, neck deformation. However, different changes may occur depending on the degree of damage. After diagnosis, timely treatment is very important. From the literature we studied, it became clear that the most effective methods of treatment are exercises, massage, hydrokinesiotherapy, and kinesiotaping. However, the effectiveness of all these methods lie in their correct combination. It is important to remember that one should start treatment in the first months of a child's life regularly until he fully recovers. Correctly selected remedies at an early stage will help the child to avoid further complications and surgery.

On the nature of buttressing in margin-parallel strike-slip fault systems

Margin-parallel strike-slip faults commonly develop along convergent plate margins where an oceanic plate subducts obliquely beneath a continental plate. Such faults detach a of continental crust from the leading edge of the overriding plate; fault motion then causes the sliver to move parallel to the continental margin, in the direction of the transverse component of relative plate motion. However, few slivers move as rapidly as predicted by simple analyses of the forces acting on them. This discrepancy must be due principally to the effect: resistance to displacement of the sliver arising from a space problem at its leading edge. More simply, a sliver can move only if it has somewhere to go. Buttresses can be geometrical (as when the continental margin changes trend abruptly), or they can arise from changes in the physical properties of the overriding plate or in other factors (such as subduction angle and angle of obliquity) that help determine whether sliver motion will occur. A strongly buttressed sliver will move only insofar as the buttress can be overcome. Obvious ways in which a buttress can be overcome are by thickening the crust or widening the sliver. Examples of both are known. Crustal thickening entails elevation increase; sliver motion is opposed by both gravity and friction. Widening the sliver is a more complex process that results in areas of extension and compression forming within the sliver, as well as a characteristic pattern of overlapping, curved fault segments. This latter response may be the cause of curvature in many strike-slip fault systems.

Signal and data processing for atomic absorption spectrophotometry

The state-of-the-art of signal and data processing techniques for atomic absorption spectrophotometry is described and discussed. Aspects of optical and atomizer design of greatest importance for providing the best signal to noise S/N ratio and minimum curvature are summarized. In background corrected systems, amplifier gain and time constants must be carefully matched, especially for transient signals. A method is given for calculating the sampling time of peak search systems. Methods of signal averaging are described and the importance of precision calculations is stressed. The correct sequence of readings for calibration is discussed. The causes of curvature are shown for simple and complex curves and methods of correction are compared. Other desirable functions are calculation of sensitivity and detection limit, error warnings and external data output facilities.