36 research outputs found
Non-invasive assessment of skin tissues structures and body composition analysis of the persons suffering from cellulite - a case study
Zmiany struktury skóry dotkniętej cellulitem są spowodowane wieloma czynnikami, m.in. zaburzeniami metabolizmu tkanki tłuszczowej, upośledzeniem przepływu krwi I limfy oraz magazynowaniem produktów przemiany mateiii w skórze. Problem cellulitu dotyczy wielu osób, w zdecydowanej większości kobiet. Wykorzystując nowoczesne metody analizy właściwości tnechanicznych skóry oraz analizy składu ciała, możliwa jest analiza wielu czynników wpływających na nasilenie procesu negatywnych zmian strukturalnych w obrębie skóry i tkanki podskórnej.Morphological changes of skin with ceilulite are caused by various factors, e.g. adipose tissue metabolism and microcirculation disorders. T h e y may also result from gathering of metabolism products witthin skin. Cellulite problems are considered to be a serious problem for women. This kind of sk n changes causes various problem in dermatological and psychological aspects of treatment. Modernand non-invasive examination techniques of skin propertis and body composition analysis enable to obtain very valuable data concerning ceilulite
EPR study of the Ag6S3O4 compound prepared by two methods
The temperature dependence of the EPR spectra of the recently discovered
Ag6S3O4 phase in the Ag-O-S system prepared by two methods, the known
method of co-precipitation from aqueous solution and a new method
depending on the interaction of Ag2S and Ag2SO4 solid reagents, has been
investigated. No EPR spectra were observed at room temperature, while at
liquid helium temperature a number of EPR spectra have been recorded,
which disappeared upon increasing temperature up to liquid nitrogen
temperature. The sample obtained by the co-precipitation method revealed
an intense, rich EPR spectrum that has been tentatively interpreted
assuming the presence of at least two different Ag2+ ion complexes, one
monomer resulting in an intense anisotropic, rhombic EPR powder pattern
with g(1) = 1.93(1), g(2) = 2.025(3), g(3) = 2.094(5), hyperfine
constants A(1) = A(2) = 60(5).10(-4) cm(-1), A(3) = 90(5).10(-4) cm(-1)
and one dimer EPR pattern presumably involving a pair of Ag2+ ions with
internuclear separation of 4.3 Angstrom. However, the presence of larger
clusters could not be excluded. On the other hand, the sample obtained
by a solid state reaction method has given rise to two rather weak EPR
lines centered at g(eff) = 2.105(3) acid g(eff) = 4.213(3),
respectively
Fabrication of Y6MoO12 molybdate ceramics: From synthesis of cubic nano-powder to sintering
cited By 0The family of cubic yttrium molybdate (Y6MoO12) has been chosen due to the possibility of substituting Y3+ cations by luminescent trivalent rare earth (RE3+) ones and to obtain transparent optical ceramics. The goal of the paper is to find a route towards the fabrication of dense Y6MoO12 ceramics from nano-powders and using well-known ceramic sintering techniques such as Spark Plasma Sintering (SPS) and Hot Isostatic Pressing (HIP). We have investigated in detail process of the powder preparation by a combustion method as well as the sintering processes taking into account all important sintering parameters. Evaporation of MoO3 was found to be correlated to reductive conditions or heating rate. Sintering was optimized in terms of phase composition, microstructure and porosity. © 2019 Elsevier Ltd and Techna Group S.r.l