Controllo e condizionamento delle acque nelle fontane a ricircolo

Il presente lavoro si riferisce alle acque delle fontane a ricircolo. Una fontana a ricircolo è un’opera monumentale le cui acque non sono erogate come potabili; inoltre le persone non vi si immergono ma potendo comunque venirne a contatto tramite schizzi o animali, vanno trattate con una disinfezione mirata ad eliminare gli agenti patogeni pericolosi per l’uomo. Dopo aver inquadrato il problema dal punto di vista normativo, nel primo capitolo, si è passati ad analizzare il problema sanitario, descrivendo microorganismi patogeni e indicatori di rischio. È stato tuttavia necessario tenere conto anche di un altro problema: quello dell’aggressività di certi prodotti disinfettanti sui materiali costituenti la fontana. A tal proposito è stato riportato l’esempio di un caso di studio, il restauro della Fontana delle Tartarughe di Roma. Infine, dopo varie considerazioni volte ad analizzare un adeguato compromesso tra problema sanitario e problema di aggressività/corrosione sui materiali, si è dimostrato come la tecnica di disinfezione a raggi UV sia preferibile per le fontane monumentali a ricircolo.

Rapid carbon nanotubes suspension in organic solvents using organosilicon polymers

A strategy for a simple dispersion of commercial multi-walled carbon nanotubes (MWCNTs) using two organosilicones, polycarbosilane SMP10 and polysilazane Ceraset PSZ20, in organic solvents such as cyclohexane, tetrahydrofuran (THF), m-xylene and chloroform is presented. In just a few minutes the combined action of sonication and the presence of Pt(0) catalyst is sufficient to obtain a homogeneous suspension, thanks to the rapid hydrosilylation reaction between SiH groups of the polymer and the CNT sidewall. The as-produced suspensions have a particle size distribution <1μm and remain unchanged after several months. A maximum of 0.47 and 0.50mg/ml was achieved, respectively, for Ceraset in THF and SMP10 in chloroform. Possible applications as polymeric and ceramic thin films or aerogels are presented.

Entre Viena y Tucumán : Las paradojas de la emancipación Argentina 1814-1820

Este artículo se centra en las paradojas del proceso de independencia argentina. Cuando el mencionado país decretó su separación definitiva del Imperio Español en 1816, declaró el sistema republicano de gobierno a pesar de estar gestionando al mismo tiempo la alternativa monárquica. Esto fue claramente puesto en evidencia durante las sesiones del Congreso de Tucumán, donde se declaró formalmente la independencia, cuando Manuel Belgrano presentó un proyecto de monarquía bajo el reinado de un descendiente inca. Hasta qué punto estos proyectos monárquicos se debieron al contexto europeo pos-napoleónico, y ala turbulenta situación política interna, es lo que se busca explicar en este trabajo

Historia del movimiento republicano en Europa,

Mode of access: Internet.

The French Revolution : a political history, 1789-1804 /

v. 1. The Revolution under the monarchy, 1789-1792 -- v. 2. The democratic republic, 1792-1795 -- v. 3. The revolutionary government, 1793-1797 -- v. 4. The bourgeois republic and the Consulate, 1797-1804.

Historia del movimiento republicano en Europa,

Imprint covered by label of C. Bailly-Bailliere, Madrid.

Ce que mes yeux ont v,

La chute de l'empire.--Les premières faillites de la république.--Le boulangisme.--L'antisémitisme.--Le dreyfusisme.--Paris autrefois et aujourd'hui.--Sa majesté l'argent.--Son altesse la presse.--Conclusion.

Les observations de medecine de Lazare Riviere ... qui contiennent quatre centuries de guerisons tres-remarquables : ausquelles on a joint des observationes qui luy avoient etˆé communiqueés /

Mode of access: Internet.

A catalogue of books relating to the discovery and early history of North and South America : forming a part of the library of E.D. Church /

Edition of 100 copies.

Histoire politique de la révolution française; origines et développement de la démocratie et de la république (1789-1804)

Mode of access: Internet.

De la constitution propre aux Cisalpins, ou Lettres de Pierre Gruet ... à son ami Picolozero.

Includes bibliographical references.

Die Nahrungsmittel aus Getreide : ihre botanischen, chemischen und physikalischen Eigenschaften, hygienisches Verhalten, Prüfen und Beurteilen : Handbuch für Studierende, Landwirte und den gesamten Getreidenahrung erzeugenden Gewerbestand /

Includes bibliographical references and index.

The French Revolution : a political history, 1789-1804 /

Translation of: Histoire politique de la révolution française.

Porcupine's works : containing various writings and selections, exhibiting a faithful picture of the United States of America; of their governments, laws, politics and resources; of the characters of their presidents, governors, legislators, magistrates, and military men; and of the customs, manners, morals, religion, virtues and vices of the people : comprising also a complete series of historical documents and remarks, from the end of the war, in 1783, to the election of the President, in March, 1801 /

continued: ... XII. Historical documents and remarks (from December, 1799 to March, 1801) ; Trial of Cooper ; Emigration Society ; Washington's death ; Proceedings in Congress during the session which began December, 1799 ; Board of Commissioners ; Defence of the Quakers of Pennsylvania ; Farewell advertisement ; Prison eclogue ; Republican morality ; Jefferson's election ; Adam's public conduct ; Jefferson's character ; Convention concluded between America and France, in 1800 ; Proceedings in Congress during the session which ended in March, 1801 ; Index.