At present there are known various methods for determining the age of cellulose containing materials which, proceeding from estimation of respective changes in the physical and chemical properties and the cellulose structure under the environmental effects, said methods being used for estimating the age of the object as a whole including an object having on the surface of the cellulose containing material an image which can be made of other materials during the various periods of the life of the cellulose containing carrier. Known in the art is a method for determining the chemical characteristics of cellulose in samples of paper by the content of carbonyl and carboxyl groups.
Known in the art is a method for determining the age of a carrier made of a based-cellulose material (RO, 116844), used for establishing the date of writing of documents, mainly, in determination of the intervention process required for recovery and saving of manuscripts, products of the early period and old books by means of sampling and determination of the level of whiteness in the initial phase and after the heat treatment at 103 . (DE, 102007-44606, B4), in which there is studied the content of the carbonyl groups decreasing with an increase of the sample age, and the content of the carboxyl groups increasing with an increase of the paper age because of progressive processes of oxidation of the cellulose.
By using the Reg Scanner utility, you can get the list of all Registry keys that have been modified in your system in the time range that you specify.Editorial writing is a style that can be hard to explain as it is usually a unique mixture of fact and opinion.Viewing editorial examples is one of the most helpful ways to learn what the style should look like.The invention relates a method for determining the time dating event of creation of an object made of a cellulose containing material and having on its surface areas with a coating and without coating, in which the results of measurements of the components of nuclear-magnetic resonance relaxation are used for determining the parameters of free induction signals and the density of protons in cellulose samples taken from the cellulose containing material surface layer with coated and uncoated areas, the value G of relative changes of the cellulose parameters are calculated using the formula: are the values of relative changes of the cellulose parameters in a relative units determined as mentioned above, through the given time interval Δt.In this case the object is an article, its fragment, an area with a coating, a time dating event mark applied on the article.