Our treatment strategy for severe DNM was efficacious for early treatment and reduced the mortality rate. Early detection of DNM, and immediate thoracotomy and irrigation of the mediastinum and thoracic cavity, are recommended.

The structure, mechanism of formation and thermal reaction of electronic defects associated with Ge in GeO2-doped silica fiber induced by fiber-drawing or γ-irradiation were studied by detecting ESR hyperfine structures due to 73Ge. The present assignment of the drawing-induced center to the Ge-E' center was confirmed from the estimated spin density on a 4s atomic orbital of 73Ge(\cong30%). The radiation-induced center was found to have a larger spin density on a 73Ge-4s orbital(\cong35%) than the drawing-induced center, and in the structural model proposed for the center, the unpaired electron is trapped on a GeO4 group (Ge electron trapped center: GEC). Most of the GECs induced by γ-irradiation at 77 K were bleached out by annealing at RT in dry fibers, while some of the GECs changed into Ge-E' centers in irradiated GeO2-SiO2 glass containing a considerable number of OH groups.

Generalizing the theorem for Goursat flags, we will characterize those flags which are obtained by "rank 1 prolongation" from the space of 1 jets for 1 independent and m dependent variables

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This paper addresses the problem of existence of generalized Landsberg structures on surfaces using the Cartan-Kähler Theorem and a Path Geometry approach. * Mathematics Subject Classification (2000) : 53B40, Primary 53C60; Secondary 53D35.