This work has been focused on the investigation of the technological procedure of Mudejar mortars applied to the characterization of a representative group of unaltered samples from an example church ...of Mudejar architecture of Aragon. The research was carried out using multi-analytical techniques including petrographic study, chemistry and mineralogical analysis. The results obtained have made it possible to classify the samples and to learn about the traditional technological procedures. All mortars analysed present a homogeneous composition. The binder is made up of a mixture of gypsum and a very low proportion of lime, while the main components of the aggregate are gypsum and carbonate rock fragments, both in a different thermal state of decomposition. The results have proved that both, binder and aggregates display the same composition in these mortars. These aggregates are the by-product of a grinding process of the previously burnt raw materials which have had a positive influence on the properties of the mortars in improving their quality.
One of the measures to increase road traffic safety in Croatia is the introduction of obligatory use of daily lights on vehicles in road traffic during driving, regardless of the visibility and the ...time of day. The paper describes the new original technical and technological procedure of analysing automotive light bulbs in order to find the traces of glass particles of the broken glass balloon in the marginal cases of action of small inertia forces generated as result of a traffic accident. Investigations of light bulbs in traffic accidents had been rarely done before; therefore the subject of this scientific research is the analysis of the light bulb filament used in automobiles to light the road ahead and to give light signals, i.e. all the light signalling devices on the automobile using the new technical and technological procedure by means of SEM/EDX method. The scientific research has improved the investigation procedure in analysing the light bulbs on automobiles in determining whether at the moment of the traffic accident the regulatory lights were switched on. In determining the responsibility of participants for causing the traffic accident, such a fact may sometimes be of crucial significance.
KEY WORDS: traffic accident, light bulb, technical and technological procedure, lights in traffic, microscope, molten glass particles
Cilj ovog istraživanja bio je utvrditi kako različite proizvodne tehnologije (I. dodavanje fosfata mljevenom mesu i masnom tkivu na početku miješanja, II. dodavanje fosfata na kraju miješanja, III. ...dodavanje fosfata pola minute prije dodavanja vode i soli, IV. sekvencijalno dodavanje fosfata i soli, miješanje i ponovno mljevenje grubo mljevenog mesa) i različite metode toplinske obrade (pečenje u pećnici pri temperaturi zraka od 200 °C i priprema na preklopnom roštilju s temperaturom ploča od 240 °C, do postizanja unutarnje temperature od 78 °C) utječu na teksturu i senzorska svojstva hamburgera. Određena su fizikalno-kemijska svojstva (pH vrijednost, kemijski sastav, sadržaj fosfata), instrumentalni parametri teksture (analiza profila teksture) i senzorska svojstva hamburgera (metoda deskriptivne analize). Tehnološki postupak I. rezultirao je tvrđim, suhim i gumenastim hamburgerom, s izraženom žilavošću i otpornošću te prevladavajućom i prepoznatljivom aromom govedine; postupak II. također je rezultirao malo pretvrdom teksturom, pri čemu je gumenost bila gotovo optimalna, a druga svojstva vrlo slična. Senzorska svojstva i parametri teksture hamburgera dobiveni postupkom III. bili su usporedivi s rezultatima postupka I. Hamburgeri proizvedeni prema postupku IV. rezultirali su mekšim mesom te manje ljepljivom i žilavom teksturom od tekstura hamburgera proizvedenih ostalim postupcima. Radi boljeg očuvanja oblika, sočnosti i arome, s gastronomskog je gledišta hamburgere bolje pripremati na preklopnom roštilju nego peći u pećnici.
PDF
