Impact of Particular Stages of the Manufacturing Process on the Reliability of Flexible Printed Circuits.

The purpose of the experiment was to indicate which element of the production process of flexible printed circuit boards is optimal in terms of the reliability of final products. According to the Taguchi method, in the experiment, five factors with two levels each were chosen for the subsequent analysis. These included the number of conductive layers, the thickness of the laminate layer, the type of the laminate, the diameter of the plated holes, and the current density in the galvanic bath.

Yeast two-hybrid cloning of a novel zinc finger protein that interacts with the multifunctional transcription factor YY1.

Muscle-restricted transcription of sarcomeric actin genes is negatively controlled by the zinc finger protein YY1, which is down-regulated at the protein level during myogenic differentiation. To identify cellular proteins that might mediate the function/stability of YY1 in muscle cells, we screened an adult human muscle cDNA library using the yeast two-hybrid cloning system. We report the isolation and characterization of a novel protein termed YAF2 (YY1- associated factor 2) that interacts with YY1.

Analysis of events associated with serum deprivation-induced apoptosis in C3H/Sol8 muscle satellite cells.

Satellite cells are the source of new muscle fibers in postnatal skeletal muscle growth and regeneration. Regulation of satellite cell survival is of fundamental importance in maintaining normal muscle function. Here we describe and characterize a tissue culture model of satellite cell apoptosis.

[Role of toxoplasmosis in the development of central nervous system lesions in children].

Because of the high degree of infestation in women capable of bearing children in Europe (70 to 80%) with Toxoplasma gondii the authors have studied all babies admitted for clinical treatment at the institute of Paediatrics in Lublin for clinical and serological indications of a connatal toxoplasmosis. In the period between January 1977 and December 1978, 133 babies showed positive findings. The most frequently occurring findings were lesions of the central nervous system (hydrocephalus 21 X, microcephaly 8 X, porencephaly 18 X, convulsions and psychomotor retardation 11 X, subdural hygroma and haematoma 34 X, encephalomeningitis 7 X).