Applications of X-Ray Microanalysis to the Study and Conservation of Ancient Glasses

X-ray microanalysis can be successfully applied to the study of the chemical composition and weathering processes of ancient glass. The problems concerned with this kind of application are considered. A verification is conducted of the accuracy and sensitivity of this technique, which are sufficient to obtain useful information on technologies and raw materials used and consequently on the origin and dating of ancient glasses. This analytical method also discloses meaningful data for the optimization of restoration and the choice of appropriate conservation operations

Design of a Service and Role-Based Performance Assessment System to Support Employee Performance Assessment

The challenge that is often faced by companies is how to find solutions that can be used to evaluate the performance of their employees. The purpose of this study is to design a service-based performance appraisal system with a ticket system to support employee performance appraisals in a company. By using this service-based assessment system, performance appraisal can be carried out objectively based on what the employees have done, this is possible because the parts and roles in the company have been mapped, where each role has different services to handle. As the employee has finished doing certain services, the employee will get points according to what has been done. At the end of each month, the company can determine the "Best Employee of the Month" based on the total point data obtained in a certain month, then the appropriate reward or punishment can be given based on their performance

Studio preliminare sulla produzione e il degrado di vetri potassici e sodici come modelli di vetrate artistiche e di vetri industriali in ambiente confinato

This study concerns the alteration of glass in confined environment , characteristic of the industrial glass containers stored inpallets before filling and of the artistic stained-glass windows protected by a glazing system . In order to better understandin the different influence of the parameters of glass alteration (chemical durability, temperature, relative humidity and exposition time), an ex-novo low-expensive system ha sbeen designed and realized for the reproduction of a confined environment and for the measure and control of relative humidity and temperature. Soda-lime silica glass and potash-lime silica glass samples have been produced as models of glass containers and medieval artistic stained glass windows repectively. Outdoor and indoor (in stove) expositions of the glass samples have been performed and the weathering of the samples has been investigated by different analytical techniques, such as optical microscopy, SEM-EDS and Micro-IRRS

La pecora Massese: conoscenze attuali

Bollettino Regionale Arsi

La pecora Massese. Risorse genetiche animali autoctone della toscana

Il germoplasma toscan

La Capra Garfagnina

Bollettino Regionale Arsi

La pecora Zerasca

Bollettino Regionale Arsi

Technology, colours, forms, and shapes in the 2nd century glass opus sectile materials from the villa of Lucius Verus in Rome

Attribuzione di migliaia di lastre in vetro, monocromo e policromo, confluite nella collezione Gorga, alla villa dell'imperatore Lucio Vero (II secolo) sulla via Cassia, e studio delle tecniche di produzione