Relationship between Thermal Diffusivity and Mechanical Properties of Wood.

This paper describes an experimental study of the relationships between thermal diffusivity and mechanical characteristics including Brinell hardness, microhardness, and Young's modulus of common pine ( L.), pedunculate oak ( L.), and small-leaf lime ( Mill.

Demonstration of surface soliton arrays at the edge of a two-dimensional photonic lattice.

We demonstrate surface soliton arrays at the interface between a homogeneous medium and an optically induced two-dimensional semi-infinite photonic lattice. These are nonlinear Tamm-like surface states localized in one but extended periodically in the other transverse dimension. Both in-phase and staggered out-of-phase soliton arrays are observed, and the experimental results are corroborated by numerical simulations.

[Pneumography of the membranous spaces in the spinal cord].

The author describes one-stage investigation of the epidural and preneural spaces at the lumbar level using gas and a needle for lumbar puncture with a longitudinal side hole at the working end with subsequent roentgenography (pneumospondylography). Altogether 140 patients with lumbar vertebral osteochondrosis with neurological disorders were examined. Pneumospondylography gives 3 levels of contrast and ensures information on the sizes of the epidural and arachnoidal spaces, function of the invertebral holes and paravertebral tissues.

[Pneumomyelography with regard to cerebrospinal fluid replacement].

Spinal arachnoidal space was investigated with cerebrospinal fluid drained and replaced with air. Some adequate parameters of the CSF replacement with gases were calculated according to rules derived from 140 pneumomyelographic investigations in patients with lumbar osteochondrosis: baseline CSF pressure, its withdrawal time and total volume. These parameters reflect the volume of arachnoidal space and its conductivity.

[Clinical features of traumatic intracranial hematomas].

Analysis of the clinical symptomatology was carried out in 162 patients with verified intracranial hematomas that accounted for 6.6% of all the craniocerebral injuries. Lethal outcomes were recorded in 38.