Certain features of the cochleovestibular syndrome in the residual stage of traumatic brain disease

Caloric and rotation tests were applied to the study of the vestibular analyser in 84 patients in the residual state of traumatic disease of the brain. Vestibular disturbances of different degree revealed in 79 patients were as a rule accomplished by cochlear derangement. In the majority of patients the vestibular syndrome was supratentorial with the involvement of the diencephal-hypothalmic, subcortical, and cortical levels of the brain. Vestibular dysfunction correlated with such factors as severity of the sustained craniocerebral traum, duration of the posttraumatic period, and, particularly, with the character of the residual neurological syndrome. In accordance with the latter, it is recommended that vestibular disturbances be treated in the residual period of closed craniocerebral injuries with due regard for the principal pathophysiological mechanisms of the underlying neurological syndrome

Use of Technogenic Silica Fume and Brown Coal Semi-Coke in the Technology of Silicon Carbide

The paper describes thermodynamic experiments to determine the optimal temperature and time modes for the carbide production process from the briquette charge comprising silica fume and brown coal semi-coke, conditions for chemical enriching of silicon carbide, its phase, chemical and granulometric compositions and particle morphology

ИССЛЕДОВАНИЕ МЕХАНИЗМА ОБРАЗОВАНИЯ И СТРОЕНИЯ ВЫСОКОПОРИСТОГО ГУБЧАТОГО СЕРЕБРА

The methods of production and the results of investigation of high-porous spongy silver and morphology of its formation are presented. The product is shown to represent nanostructure consisting of silver particles of 100–200 nm in size, accreted with one another into conglomerates of branched forms. Examples of possible application of nanostructural high-porous spongy silver are given.Представлены методы получения и результаты исследования высокопористого губчатого серебра и морфологии его образования. Показано, что этот продукт представляет собой наноструктуру, состоящую из частиц серебра размером 100–200 нм, сросшихся между собой в конгломераты разветвленной формы. Даны примеры возможного использования наноструктурного высокопористого губчатого серебра

ИССЛЕДОВАНИЕ СТРОЕНИЯ И МЕХАНИЗМА ОБРАЗОВАНИЯ В ХЛОРИДНЫХ РАСТВОРАХ НИТЕВИДНЫХ СВИНЦОВЫХ ГУБОК

The results of experimental and theoretical researches of nanostructural filamentary lead sponge formation from chloride solutions are presented. It is established that such sponge with filament width of approximately 100 nm represents the hydrogen stabilized structure consisting of lead conglomerates (2-5 nm in size). The lead filamentary structure fragments are shown to remain unchanged in solid state for enough long time.Представлены результаты экспериментальных и теоретических исследований образования из хлоридных растворов наноструктурных нитевидных свинцовых губок. Установлено, что такая губка с толщиной нитей порядка 100 нм представляет собой структуру, состоящую из конгломератов свинца (размером 2–5 нм), стабилизированную водородом. Показано, что фрагменты нитевидной структуры свинца сохраняются в твердом состоянии достаточно продолжительное время

The Scarlet Flower

280hal.;20c

Analysis of hydroaeroionization efficiency in natural systems

Abstract The article deals with the problem of aeroionization in various technosphere facilities: in living quarters, study rooms, in natural environment and on the shop floor. The special attention is paid to the problem of hydroaeroionization due to its availability for implementation and potential for use for hygienic purposes. The authors carried out the experimental study in hydroaeroionization next to fountains and waterfalls. The measurements were taken with MAC-01 aeroion counter and were accompanied by the control of temperature, atmosphere pressure and relative air humidity in the area next to the controlled object. The variations in concentration of positive and negative ions in the air next to the controlled objects were less than 30%. The experimental results are consistent with the basic results of the study of balloelectric effect previously observed by other authors. The documents on development of a uniquely designed hydroaeroionizer were cited.</jats:p

Experience in solving some problems of air ionization

Abstract This article presents the results of observing the aero-ionic background, provides a brief list of ionizers recommended for creating hygienically acceptable conditions in small rooms. Aeroionic background was compared without ionization and with it. For the statistical processing of a 450 measurements array within a period of 4 seconds, a unified program block was used, which provides the typical characteristics of arrays in a visual form. The results of the tests on water treatment by ultrasound are presented. The treatment was accompanied by a balloelectric effect, in which, after a short period of time, light negative air ions became much larger than the positive ones known to have a negative effect on humans.</jats:p

Comparative indicators of abrasive powders of cubic boron nitride of different grades

Comparative indicators of abrasive powders of cubic boron nitride of different grades Comparative data on the synthesis of cubic boron nitride (CBN) of the Elbor grade in the Mg-B-N system using different catalysts on presses with a force of 25 MN (DO044) for the period 1997‒2009 are presented. A description of the technical characteristics of CBN of different brands of Elbor in comparison with CBN powders of ABN (DeBeers) and CBN800 (China) grades is presented.</jats:p