Aerogel-Based Single-Ion Magnets: A Case Study of a Cobalt(II) Complex Immobilized in Silica.

The chemical immobilization of cobalt(II) ions in a silica aerogel matrix enabled the synthesis of the first representative example of aerogel-based single-ion magnets. For the synthesis of the lyogels, methyl-trimethoxysilane and N-3-(trimethoxysilyl)propyl ethylenediamine were co-hydrolyzed, then the ethylenediamine groups that were immobilized on the silica matrix enabled the subsequent binding of cobalt(II) ions. Lyogels with various amounts of ethylenediamine moieties (0.

[Study of efficiency of ceraxon in the treatment of lag psychomotor development of children with hypoxic-ischemic lesions of central nervous system].

The study involved 76 children aged 0-2, who suffered perinatal hypoxic-ischemic central nervous system lesion. Psychomotor development of children has been studied, and the results that demonstrate the effectiveness of incorporating ceraxon in the complex therapy of hypoxic-ischemic encephalopathy, have been obtained.

[Criterion for the hygienic standardization of exposure to infrequent ultra-short electromagnetic pulses].

The authors provide evidence for the estimated density of an inducted current as a criterion for the hygienic standardization of exposure to infrequent electromagnetic pulses of nanosecond duration, which are generated by test discharge units. The adverse effect threshold for the pulse has been determined and its maximum accessible action of the units on the staff established. Reference guidelines for electromagnetic safety of workers engaged in the pulsed fields have been developed and approved.

Spontaneous regression of optic gliomas: thirteen cases documented by serial neuroimaging.

Objective: To demonstrate spontaneous regression of large, clinically symptomatic optic pathway gliomas in patients with and without neurofibromatosis type 1 (NF-1).

Methods: Patient cases were collected through surveys at 2 consecutive annual meetings of the North American Neuro-Ophthalmology Society (NANOS) and through requests on the NANOSNET Internet listserv. Serial documentation of tumor signal and size, using magnetic resonance imaging in 11 patients and computed tomography in 2 patients, was used to evaluate clinically symptomatic optic pathway gliomas.