Method of natural periodization of processes

The method of natural periodization of processes based on objective quantitative account of the dynamics of changing of certain parameters is described. The natural periodization has been established by analysis of the data dynamic series, the distribution of observation terms being made with regard for the a priori taken rate of changes of the parameters under study. The possibility to compare different parameters has been achieved by using centrated approximated data. The discovering of natural periods can be performed by analysis of the group of centrated data. The variation of the variation coefficient of centrated ordinates in each temporal point can be calculated for objectivization of the evaluation. The investigation of developmental changes of the thyroid of A/H mice with employment of methods of morphometry and quantitative histochemistry is taken as an example.     

Neurophysiologic study of sleep in infants with cerebral palsy

With the aid of a polygraphical study of day sleep in infants with cerebral palsy it was possible to demonstrate in many cases changes of qualitative characteristics of the stages of sleep with disorders of normal dynamics in the EEG, motor and vegetative signs. The authors detected a certain correlation between the degree of such changes and the severity of the clinical symptomatology, as well as a possibility of changes in expression of the pathology of sleep at different stages of the disease, sometimes with an increase of this pathology.     

Effect of liquid diet on serum protein binding and prednisolone concentrations after oral prednisone

After prednisone (two 5 mg tablets) was given to each of six normal volunteers with water or with a liquid meal, standard pharmacokinetic parameters of prednisolone metabolism were similar, except that peak serum prednisolone concentrations occurred later after the meal. We conclude that prednisone can be given with a meal without significantly affecting the metabolism of prednisone or prednisolone.     

Steroid hormones in erysipelas

Deep neck infection has ominous implications if not detected and treated in an early stage. The anatomic relationships of head and neck spaces encourage spread of infection. Immediate hospitalization and constant monitoring of the patient after diagnosis are mandatory.     

Crack formation mechanism in laser-welded Au-coated Invar materialsfor semiconductor laser packaging

Crack formation mechanism in laser-welded Au-coated Invar materials for semiconductor laser packaging is investigated experimentally and numerically. Experimental results obtained from metallography, scanning electron microscope (SEM), SEM mapping, and energy dispersive spectrometer (EDS) line profile show that high concentration of Au composition accumulate near the crack region. The cause of Au accumulation may come from the segregation of Au along the track region. A finite-element method (FEM) is performed on the calculation of thermal stresses during spot-welding for Au-coated Invar materials. Numerical results show that the high tensile stresses of the Au segregation layer generated by rapid solidification shrinkage is the possible cause for crack formation. Both experimental and numerical results suggest that the crack formation mechanism in laser-welded Au-coated optoelectronic materials is directly related to the combined effects of the Au segregation and high tensile stresses induced by the strain shrinkage during the final stage of solidification     

A novel transient simulation for 3D multilevel interconnections oncomplex topography

An efficient method is presented to model the transient characteristics of distributed resistor-capacitor of ULSI multilevel interconnections on complex topography, in which the reformulation of the boundary-element method (BEM) and the Pade-via-Lanczos (PVL) algorithm associated with multilayer Green's function can avoid the redundant works on both volume mesh and transient analysis associated with the finite-difference method. An adaptive multilayer Green's function is adopted to investigate several cases that have revealed interesting physical mechanisms in charge transfer between conductors on multilayer topography. To improve the timing analysis efficiency of the finite-difference method, the dominant poles are obtained by introducing the PVL algorithm for model-order reduction. Hence, it is easy to calculate the transient characteristics of both parallel conductors and complicated configurations such as crossing lines, corners, contacts, multilayers, and their combinations