The diameter measurement of the cylinder bores is the specific problem of the length metrology. In practice, this operation is realised using three-pointed bore gauges - inside micrometers. For testing of the inside micrometers are used setting rings. Such ring gauges are manufactured from the wear resistant steel or zirconium ceramic with diameter tolerance of 1 mm and shape tolerances according to DIN 2250 up to a diameter of 60 mm. Since the setting rings of highest accuracy are the reference standards of second order, there is necessary to carry out their precise calibration. This article describes the optical design of the device for the ring gauges calibration. and Meranie priemeru valcových otvorov možno považovať za špecifický problém metrológie dĺžky. V priemyselnej praxi sa meranie priemeru realizuje trojbodovými mikrometrickými meradlami otvorov. Na kalibráciu týchto meradiel sa používajú nástavné krúžky. Nástavné krúžky sú vyrábané z nehrdzavejúcej ocele alebo zirkónovej keramiky so zaručenou toleranciou 1 mm priemeru a tvaru podľa DIN 2250 až do priemeru 60 mm. Pretože nástavné krúžky najvyššej presnosti sú referenčnými etalónmi 2. rádu, je potrebné zabezpečiť ich kalibráciu. Príspevok popisuje návrh optického prístroja na kalibráciu nástavných krúžkov.
Cremation in Late-Stage Bell-Beaker Culture Amphoras in Southern Moravia (Including a note on the internal arrangement of Bell-Beaker Culture society). There is an interesting fi nd among the graves of the Bell Beaker Culture in south Moravia (Hostěradice and Jiřice, Znojmo region), in which cremation burial were disposed in urns – especially amphoras covered with another, upside-down vessel (usually a bowl, sometimes a smaller amphora). This intriguing fi nd is the contents of a cremation in Božice – Česká kolonie near Dvůr Hoja. There is a unique, irreplaceable item in the collection of funerary pottery from Božice – Česká kolonie (near Dvůr Hoja) – an urn containing the remains of a cremation. It is a large, wide amphora with four handles and a bulge. The “comb” decoration on its bottom with densely placed thin grooves is very rare in the Bell-Beaker Culture. The cremation inside was covered with a toppled bowl with a wider rim. The grave pit is of cylindrical shape. The grave contained the burned bones of one or two people. One group consisted of more robust human bones, while the second group was more delicate., Jaromír Kovárník., and Obsahuje seznam literatury
Ještě nedávno se tuková tkáň považovala za pouhou zásobarnu energie a symbol nežádoucí obezity, která má značný podíl na tzv. civilizačních chorobách. Stále víc vědeckých poznatků však začalo podobně jednostranný pohled nabouravat a ukazovat, že tuková tkáň není zbytečné zlo, ale má mnoho důležitých funkcí, bez nichž by se naše tělo neobešlo. and Jana Olivová, Stanislava Kyselová.