ON ТНЕ ROLE OF EXOGENOUS AND EXOCEREBRAL FACTORS IN ТНЕ OCCURRENCE OF PSYCHOSES IN PRESENILE AGE AND SENILIТY

With the inсrеаsе of mеаn duration of life in mаn, аn ever increasing medical аnd social importance is attached to the problem of the psychoses in presenile and senile age. Prophylaxis of these disorders is closely соnnесtеd with the detection of exogenous аnd exocerebral injuries which take part in their geinesis.Clinical аnd dispensary observations (including an inquiry оn social coпditions) werе carried out in 155 individuals suffering from presenile аnd senile psychoses (of them 110 with involutive, 35 with vascular аnd 10 - with senile psychoses), as а control served the clinical iпvestigation аnd the inquiry on social conditions of 100 individuals (with nо psychotic traits) in 2 senility homes (48 of them displayed cerebral arteriosclerosis andblооd hypertension and 52 - without any vascular disorders). The females prevail among patients with psychoses (95:60); this difference is exclusively due to involutive psychoses. Соnсеrning the age at onset, 70% of the involutive psychoses have occurred in the age - under 60 years, whereas most of the vascular psychoses - ovеr 60 years

Influence of reactive radicals in cellulose fibres on the formation of zeolite coatings

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Conductive composites based on metallocene isotactic poly(propylene): Preparation and properties

The research deals with the preparation and the further comprehensive characterization of metallocene polypropylene-based composite materials by incorporation of carbon black nanoparticles. Composites containing up to 10 wt% of carbon black were prepared by direct melt mixing in a single screw extruder Brabender Extrusiograph type 30/25D with attached static mixer at melt temperature of 200 °C and a screw speed of 30 rpm, according to a two-step process. Some composites were treated with 3 wt% maleic anhydride grafted polypropylene (MAH-PP). The rheological behaviour of the miPP nanocomposites was determined by cone/plate rheological measurements at 180 °C. The composites were characterized by SEM for morphological details and uniaxial stress-strain measurements for determining the mechanical parameters. Electric conductivity of injection molded plates from these composites was investigated. The different miPPs studied are ranked in an ascending order according to their increasing molecular weight concerning the magnitude of their rheological parameters. The maleic anhydride compatibilizer leads to lower viscosity values even at high shear gradients and to better homogenization of the nanofiller in the polymer matrix. The processing conditions, carbon black concentration and viscosity of the virgin polymer have an impact on the final conductivity of the miPP/carbon black composites. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Peer Reviewe

Gas chromatographic separation of isomeric benzene derivatives using molecular sieves, combined with partition columns

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