Comparison of Original and Modern Mortars at the Herculaneum Archaeological Site

ABSTRACT

This paper aims to evaluate mineralogical, elemental, and thermal differences among original Roman joint mortars and those used in twentieth-century restoration campaigns taken from different areas at the Herculaneum archaeological site. The purpose is to improve the compatibility of restoration mortars. Roman and modern mortars were studied with petrography, thermal analysis and x-ray fluorescence investigations. The results indicate significant differences between the Roman and modern mortars which could facilitate the degradation process. Roman mortars, in particular, were composed of a coarser aggregate which was present in a lower ratio with binder in comparison with modern mortars.     

Book reviews

Luciano Guerci and Giuseppe Ricuperati (eds) 1998 Il coraggio della ragione. Franco Venturi intellettuale e storico cosmopolita (Atti del Convegno internazionale di studi promosso da Fondazione Luigi Einaudi, Università degli Studi di Torino, Accademia delle Scienze, Deputazione Subalpina di Storia Patria, Torino, 12–14 dicembre 1996) (Turin: Fondazione Luigi Einaudi), pp. 1–497, ISBN 88–430–1129–4.

Stefano Levati ( 1997) La nobiltà del lavoro. Negozianti e banchieri a Milano tra Ancien Regime e Restaurazione (Milan: Franco Angeli), pp. 1–320, 40,000 lire.

Guido Formigoni (1998) L'Italia dei cattolici: Fede e nazione dal Risorgimento alla Repubblica (Bologna: Il Mulino), pp. 1–176, 22,000 lire, ISBN 88–15–06314–5 paperback.

Albert Schram ( 1997) Railways and the Formation of the Italian State in the Nineteenth Century, ’Cambridge Studies in Italian History and Culture’ (Cambridge: Cambridge University Press), pp. 1–164, Bibliography and Index, $59.95, ISBN 0–521–57159–6 hardback.

Catherine Brice (1989) Monumentanté publique et politique à Rome. Le Vittoriano (Rome: École Française de Rome), pp. 1–439.

Hans Woller ( 1997) I conti con il fascismo: L'epurazione in Italia 1943–1948 (Bologna: Il Mulino), pp. 1–603, 50,000 lire, ISBN 88–15–06198–3 paperback.

Maria Stone ( 1998) The Patron State: Culture and Politics in Fascist Italy (Princeton, NJ: Princeton University Press), pp. 1–334, ISBN 0–691–05999–3 paperback.

Angelo Ventrone (1996) La cittadinanza repubblicana. Forma‐partito e identità nazionale alle origini della democrazia italiana (1943–1948) (Bologna: Il Mulino), pp. 1–305, 38,000 lire, ISBN 88–15–05508–8 paperback.

R. J. B. Bosworth and Patrizia Dogliani (eds) (1999) kalian Fascism: History, Memory and Representation (Houndmills and New York: Macmillan/St Martin's Press), pp. 1–245, ISBN 0–312–21717.

Ernesto Galli della Loggia (1998) L'identità italiana (Bologna: Il Mulino), pp. 1–171, 18,000 lire, ISBN 88–15–066 12–8 paperback.

Aldino Monti (1998) I braccianti (Bologna: Il Mulino), pp. 1–161, 18,000 lire, ISBN 88–15–06582–2 paperback.

Giuliana Gemelli (ed.) (1998) Scuole di management Orìgini e primi sviluppi delle business schools in Italia (Bologna: Il Mulino), pp. 1–543, ISBN 88–15–06297–1 paperback.

Valeria Fargion (1997) Geografia della cittadinanza sociale in Italia (Bologna: Il Mulino), pp. 1–351, 42,000 lire, ISBN 88–15–06127–4 paperback.

Umberto Gentiloni Silveri (1998) L'Italia e la nuova frontiera: Stati Uniti e centrosinistra 1958–1965 (Bologna: Il Mulino), pp. 1–343, 45,000 lire, ISBN 88–15–06282–3 paperback.     

Innovation policy at the local and national levels: The case of Emilia‐Romagna

The article describes the main Italian policy instruments for innovation and how these have been used by companies located in the Region of Emilia‐Romagna. It also describes the role played by structures set up at the local level in the enactment of innovation policies in Emilia‐Romagna. In the first part, the article analyzes the current organization and legislation of Italian innovation policy; and in the second part, it examines the reasons which have led to the recognition of the importance of the local level of innovation policy, looking more closely at innovation initiatives in the Region of Emilia‐Romagna. In the third part, it draws the conclusions. In particular the article underlines that Italian local governments, even without legislative and financial autonomy, can play an important role in modernizing the industrial system through initiatives which do not require vast sums of money but which identify and meet specific local needs.     

TWENTY YEARS AFTER “ABSOLUTE CHRONOLOGY: ARCHAEOLOGICAL EUROPE 2500‐500 BC” NEW DATA ON ITALIAN PROTOHISTORY

The article is a tribute to the pioneering role of Klavs Randsborg in the early Nineties in search for a new comprehensive chronology for Italian and European prehistory based on a combination of dendrodates with C14 dates. The debate of the last 25 years on this matter is presented, demonstrating a scholarly split, in particular in Italy. At the same time, an Italian peculiarity, the presence of layers of volcanic eruptions mixed with archaeological deposits is proposed as a sort of meeting ground for opponents and proponents of absolute chronology and a way to pair it with known cultural phenomena.     

Effectiveness of FRCM Reinforcement Applied to Masonry Walls Subject to Axial Force and Out-Of-Plane Loads Evaluated by Experimental and Numerical Studies

ABSTRACT

An experimental campaign and a numerical analysis devoted to the investigation of the out-of-plane behavior of masonry walls reinforced with Fiber Reinforced Cementitious Matrix (FRCM) are presented here. The main goal of this study is to analyze and evaluate the effectiveness of the strengthening system, by discussing failure modes and capacity of strengthened masonry walls, in order to assess their behavior under out-of-plane horizontal actions, such as, for example, seismic actions. A purposely designed experimental set-up, able to separately and independently apply an axial force and out-of-plane horizontal actions on masonry walls, was used. Experimental results are discussed and compared with the outcomes of nonlinear analyses performed on simplified finite element models of the walls. A proper evaluation of the flexural capacity of FRCM strengthened walls is the first step of the ongoing process of drawing reliable code guidelines leading to a safe design of strengthened masonry structures.     

The dejuvenation of the Italian population

Abstract

In recent decades, a process of structural reduction of the weight of new generations in overall population (dejuvenation) has been observed. In Italy, this process started in the 1970s and accelerated in the 1990s. We present here its main consequences for Italian society and economy. The number of Italian young people (aged 0–29) was reduced from 24.5 million in 1951 (51.6% of the population) to 17.5 million in 2016 (28.8%). What is more, many young Italians are becoming a wasted resource and a social cost, facing high rates of unemployment, long economic dependence on the family of origin, renunciation of full achievement of their life plans, distrust of institutions, low social and political participation, and increasing emigration flow. We analyze, using multivariate models, the data of the Rapporto Giovani survey held by the Toniolo Institute in 2015. Our main finding is that generational disadvantages not only hamper economic growth but, in a familistic context, also exacerbate social inequalities.     

Experimental Identification of the Dynamic Characteristics of a Flexible Rocking Structure

This article presents the results of free vibration and earthquake excitation tests to investigate the dynamic behavior of freely rocking flexible structures with different geometric and vibration characteristics. The primary objective of these tests was to identify the complex interaction of elasticity and rocking and discuss its salient effects on the rocking and vibration mode frequencies, shapes and excitation mechanisms. The variability of response is discussed, including critical investigation of the repeatability of the tests. It was found that the variability in energy dissipation and energy transfer to vibrations at impact may lead to significantly different responses to almost identical excitations.     

The Museum for the History of the University of Pavia and the Birth of Histology

A brief overview is provided on the development of histology as an independent discipline at the University of Pavia, through documents and preparations preserved in the Museum for the History of the University. Studies on the organization of tissues and cells started blooming in the mid-1850s, when morphological observations were supported by significant technical advancements in microscopy and tissue preparation. The role of Albert Koelliker, the great father of European Histology in the second half of 19 th century, is also discussed. Koelliker had several contacts with Camillo Golgi and promoted the diffusion of Golgi's discoveries. The authors also underline the innovative role of Camillo Golgi in the histological approach to research and in the foundation of modern histology.