UNICA IRIS Institutional Research Information System

COLUMBU, STEFANO
 Distribuzione geografica
Salva come PNG Salva come JPEG
Continente #
EU - Europa 132.740
NA - Nord America 5.100
AS - Asia 1.032
OC - Oceania 70
SA - Sud America 56
AF - Africa 34
Continente sconosciuto - Info sul continente non disponibili 3
Totale 139.035
Salva come PNG Salva come JPEG
Nazione #
IT - Italia 130.667
US - Stati Uniti d'America 5.007
CN - Cina 663
UA - Ucraina 610
SE - Svezia 495
DE - Germania 213
GB - Regno Unito 181
FI - Finlandia 164
FR - Francia 92
VN - Vietnam 77
SG - Singapore 74
AU - Australia 65
CA - Canada 65
PT - Portogallo 61
ES - Italia 54
TR - Turchia 54
IN - India 42
PE - Perù 36
BE - Belgio 34
NL - Olanda 31
MX - Messico 28
PL - Polonia 27
JP - Giappone 18
KR - Corea 17
RU - Federazione Russa 16
PH - Filippine 15
CZ - Repubblica Ceca 12
GR - Grecia 12
HK - Hong Kong 12
IR - Iran 12
CH - Svizzera 9
DZ - Algeria 9
MY - Malesia 9
RO - Romania 9
HR - Croazia 8
MA - Marocco 8
AT - Austria 7
DK - Danimarca 7
ID - Indonesia 7
IL - Israele 7
PK - Pakistan 7
BR - Brasile 6
CL - Cile 6
IE - Irlanda 6
MT - Malta 6
CO - Colombia 5
EG - Egitto 5
NZ - Nuova Zelanda 5
AE - Emirati Arabi Uniti 4
NO - Norvegia 4
TH - Thailandia 4
EC - Ecuador 3
EU - Europa 3
MD - Moldavia 3
NG - Nigeria 3
TN - Tunisia 3
TW - Taiwan 3
UZ - Uzbekistan 3
CY - Cipro 2
EE - Estonia 2
ET - Etiopia 2
HU - Ungheria 2
SA - Arabia Saudita 2
SI - Slovenia 2
SK - Slovacchia (Repubblica Slovacca) 2
ZA - Sudafrica 2
AL - Albania 1
KE - Kenya 1
LU - Lussemburgo 1
MK - Macedonia 1
MU - Mauritius 1
RS - Serbia 1
Totale 139.035
Salva come PNG Salva come JPEG
Città #
Cagliari 129.729
Fairfield 498
Chandler 492
Nyköping 399
Woodbridge 389
Houston 387
Ann Arbor 309
Wilmington 282
Jacksonville 281
Ashburn 279
Seattle 184
Cambridge 179
Dearborn 168
Boardman 127
Nanjing 127
Beijing 95
Helsinki 91
Redwood City 77
Shanghai 76
Dong Ket 75
Rome 63
Boston 55
New York 51
Shenyang 49
San Diego 48
Milan 42
Nanchang 39
Padova 39
Changsha 36
Hebei 35
Mountain View 34
Atlanta 30
Sassari 29
Guangzhou 28
Toronto 28
Arequipa 26
Washington 25
Tianjin 23
Jiaxing 22
Montclair 22
Jinan 21
Norwalk 21
Aguascalientes 20
Brisbane 20
Orange 19
Lisbon 18
Évora 18
London 17
Augusta 16
Oxford 16
Verona 16
Auburn Hills 15
Istanbul 15
Hefei 14
Ningbo 14
Athens 13
Brussels 13
Chicago 13
Redmond 12
Tübingen 12
Florence 11
Millbury 11
Rende 11
Siena 11
Taizhou 11
Valencia 11
Bucheon-si 10
Falls Church 10
Hangzhou 10
Krakow 10
Mumbai 10
Pune 10
Los Angeles 9
Venezia 9
Zhengzhou 9
Edinburgh 8
Kunming 8
Catania 7
Glasgow 7
Kawasaki 7
Leawood 7
Ottawa 7
Phoenix 7
Selargius 7
Settimo San Pietro 7
Torino 7
Turin 7
Amsterdam 6
Antalya 6
Assèmini 6
Borås 6
Central 6
Dublin 6
Egham 6
Gallarate 6
Melita 6
Monastir 6
Monserrato 6
Putignano 6
Québec 6
Totale 135.608
Salva come PNG Salva come JPEG
Nome #
Romanesque and territory. The construction materials of Sardinian medieval churches: new approaches to the valorization, conservation and restoration 5.108
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications located in different climatic conditions 2.922
(FeCo/Ppy@C): Pt-free FeCo-Polypyrrole Nanocomposites Supported on Porous Carbon for Electrochemical Application 2.782
The ancient pozzolanic mortars and concretes of Heliocaminus baths in Hadrian's Villa (Tivoli, Italy) 2.650
Mineralogical, petrographic, and physical investigations on fossiliferous middle Jurassic sandstones from central Sardinia (Italy) to define their alteration and experimental consolidation 2.511
Alteration processes of geomaterials used on the pentagonal tower of Serravalle Castle (central-west Sardinia, Italy) 2.266
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications 2.230
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications 2.153
Geochemical, mineral-petrographic and physical-mechanical characterization of stones and mortars from the Romanesque Saccargia Basilica (Sardinia, Italy) to define their origin and alteration 2.067
The monumental submerged punic harbor of Malfatano and associated Piscinnì quarries, Archaeometric and Geoarchaeological approach 2.042
Geochemical characterisation of pozzolanic obsidian glasses used in the ancient mortars of Nora Roman theatre (Sardinia, Italy): provenance of raw materials and historical–archaeological implications 2.020
The ancient pozzolanic mortars and raw materials of the Heliocaminus baths in Hadrian's Villa (Italy) 1.951
Petrophysical properties of a granite-protomylonite-ultramylonite sequence: insight from the Monte Grighini shear zone, central Sardinia, Italy 1.861
Petrographic features of foliated leucocratic body in the Migmatite Complex from northeastern Sardinia 1.831
Characterization of the ancient mortars and 3D laser scanner survey to define the construction phases of the Heliocaminus Baths in the Hadrian's Villa (Tivoli, Italy) 1.819
Il quartiere edilizio ritrovato sotto la chiesa di Sant’Eulalia a Cagliari 1.760
Methodological approach in the conservation of coastal fortifications 1.737
Origin of Roman worked stones from St. Saturno christian basilica (South Sardinia, Italy) 1.675
Laser-Induced Breakdown Spectroscopy analysis of the limestone Nuragic statues from Mont'e Prama site (Sardinia, Italy) 1.674
Mineralogical-chemical alteration and origin of ignimbritic stones used in the old Cathedral of Nostra Signora di Castro (Sardinia, Italy) 1.669
Geochemical characterization of migmatized orthogneiss from Porto Ottiolu (NE Sardinia, Italy) and its inferences on partial melting process 1.560
Petrographic and physical investigations on geomaterials for conservation of Las Plassas Castle (Marmilla, Sardinia, Italy) 1.547
Petrographic and mineralogical charecterization of volcanic rocks and surface-depositions on romanesque monuments 1.527
Digital mapping, building technique and petrographic characterisation of stones from Opera Punta Rossa fortification (Caprera, north Sardinia) 1.451
Physical-mechanical consolidation and protection of Miocenic limestone used on Mediterranean historical monuments: the case study of Pietra Cantone (southern Sardinia, Italy) 1.435
Petrophysical properties of Variscan mylonitic leucogranite of Monte Grighine, west-central Sardinia 1.416
Relations between static-structural aspects, construction phases and building materials of San Saturnino Basilica (Cagliari, Italy) 1.406
The Sant’Antioco di Bisarcio Romanesque Basilica (NE Sardinia, Italy): traces of ancient treatments on the stone materials of the façades 1.373
Archaeometric study of mortars from the Pisa's Cathedral Square (Italy) 1.363
Mineralogical, petrographic and physical-mechanical study of Roman construction materials from the Maritime Theatre of Hadrian's Villa (Rome, Italy) 1.357
Mappatura digitale, tecniche costruttive e caratterizzazione petrografica delle pietre della fortificazione di Punta Rossa (Caprera) 1.343
Chronological classification of ancient mortars employing spectroscopy and spectrometry techniques: Sagunto (Valencia, Spain) Case 1.312
From the fortresses of Peruzzi to the Medici fortress: study of the entrapment mortars before and after the fall of the State of Siena 1.296
Roman mortars and raw materials from the Maritime Theater of Roman Hadrian's Villa (Rome, Italy) 1.292
From Roman to Romanesque, a mix of architectural styles and geomaterials in San Saturnino Basilica (Cagliari, Italy): petrophysical characterization, static-structural analysis and 3D laser-scan relief 1.280
Provenance of marbles from Baths of Nero (Pisa, Italy) 1.253
Petrographic, geochemical and physical characterization of volcanic rocks from the fortification of Bosa Castle (western Sardinia, Italy) 1.237
Mineralogical-compositional variations in the production technologies of mortars used in some Italian medieval fortifications located in different territorial and historical contexts 1.211
Archaeometric study of the Roman marbles reused in the late Antiquity St. Saturnino Basilica (Cagliari, Italy) 1.201
Geochemical and petrographic analysis on the stones and integrated digital survey of the Cathedral of Sant'Antioco di Bisarcio (Ozieri, Italy) 1.163
The Santa Croce wall structure of Cagliari's ancient fortifications (Sardinia, Italy): construction technologies and stone decay 1.155
Historic masonry of Middle Ages in Sardinia: materials and building techniques as motivating reasons for iconographic choices 1.152
Geochemical and petrophysical characterization of volcanic raw materials with pozzolanic activity used in Roman ancient mortars: some case study 1.119
Le vulcaniti mioceniche sarde utilizzate come materiali costruttivi nell’architettura storica: l’esempio della chiesa romanica di San Pietro di Zuri (Sardegna, Italia) 1.117
Decay and provenance of the volcanic rocks used to construct the pentagonal tower of the medieval castle of Serravalle (Bosa, W Sardinia, Italy) 1.108
Petrographic and geochemical investigations on the volcanic rocks used in the Punic-Roman archaeological site of Nora (Sardinia, Italy) 1.077
Contribution of petrophysical analysis and 3D digital survey in the archaeometric investigations of the Emperor Hadrian’s Baths (Tivoli, Italy) 1.067
I monumenti megalitici di Ellès e Mididi nella regione di Maktar. Caratteri geologici, geomorfologici e petrografici dell’Alto Tell tunisino 1.055
Alteration of stone materials on Sardinian medieval monuments: physical, chemical and petrographic analysis for their restoration and preservation 1.055
Secondary mineral phases and ancient treatments on limestone from Monte de Prama nuragic statues (Sardinia, Italy) 1.054
Use of stone and construction technologies in the medieval and modern fortifications of Cagliari (south-Sardinia, Italy) 1.038
K/Na-silicate, ethyl-silicate and silane nano-molecular treatments in the restoration of high porous limestone 1.036
Caratterizzazione mineralogico-petrografica delle malte del teatro di Nora (Sardegna sud occidentale) 1.022
Characterization of ancient coloured paintings on the mortars from the ‘Teatro Marittimo’ of Roman Hadrian's Villa (Rome, Italy) 1.021
Analisi composizionale comparativa delle malte di allettamento delle Fortezze del Peruzzi e dei Medici prima e dopo la caduta dello Stato di Siena 1.021
Mineralogical, petrographic and chemical analysis of geomaterials used in the mortars of Roman Nora theatre (south Sardinia, Italy) 1.007
The stones of the medieval ‘San Mamiliano di Simassi’ church (SW Sardinia, Italy): characterization and state of conservation 960
Degrado fisico indotto da assorbimento d'acqua in rocce vulcaniche usate per costruire la chiesa di Nostra Signora di Otti (Sardegna Nord-occidentale, Italia): Ulteriori dati e nuove considerazioni 958
Caratterizzazione mineralogico-petrografica e provenienza delle vulcaniti del teatro romano di Nora (Sardegna sud occidentale) 950
Examining the reactivity of volcanic ash in ancient mortars by using a micro-chemical approach 942
null 918
Asce in pietra di insediamenti eneolitici dell’alto Campidano, Sardegna centro occidentale - Italia. (Caratterizzazione petrochimica e implicazioni archeologiche) 912
Pyroclastic Stones as Building Materials in Medieval Romanesque Architecture of Sardinia (Italy): Chemical-Physical Features of Rocks and Associated Alterations 905
Caratteri petrografici, petrochimici, mineralogici, vulcanologici e fisici delle vulcaniti cenozoiche affioranti nei bacini di alimentazione delle sabbie dei litorali sardi antistanti le coste della corsica; confronti con la mineralogiadei sedimenti costieri. Dati preliminari 884
I monumenti megalitici di Ellès e Madidi nella regione di Maktar – Caratteri geologici, geomorfologici e petrografici dell’Alto Tell tunisino 865
Asce eneolitiche in pietra scheggiata della Sardegna centro occidentale. Dati preliminari petrografici e geochimici e implicazioni archeometriche 841
Hydric dilatation of ignimbritic stones used in the Church of Santa Maria di Otti (Oschiri, northern Sardinia, Italy) 839
Workability and chemical-physical degradation of limestone frequently used in historical Mediterranean architecture 837
Strategies for helium pycnometry density measurements of welded ignimbritic rocks 833
Obsidian in the geochemical-petrographical evolution of Plio-Quaternary volcanics from Monte Arci 832
The church of St. Saturnino in Cagliari, Sardinia, reading the levels of history through the use of digital survey and the petrophysical study of materials 826
Provenance and alteration of pyroclastic rocks from the Romanesque Churches of Logudoro (north Sardinia, Italy) using a petrographic and geochemical statistical approach 815
Manuale sui materiali lapidei vulcanici della Sardegna centrale e dei loro principali impieghi nel costruito 807
Ammonium monoethyloxalate (AmEtOx): a new agent for the conservation of carbonate stone substrates 788
Ca-oxalate and alteration films on the stones of the medieval Romanesque Sardinian monuments (Italy) 759
Compositional analysis of the stones and ancient mortars of the Nora medieval tower fortification (south Sardinia, Italy) 758
Geochemical and mineralogical alteration on the stone and mortar surfaces of medieval churches (Sardinia, Italy): weathering processes, ancient conservation treatments and their microstratigraphy 755
The construction materials and static-structural aspects of the Budello tower (Teulada, south-west Sardinia, Italy) 751
Chemical-physical decay of volcanic stone from Santa Maria Church in Tergu (Anglona, Italy) 744
The ancient mortars and geomaterials of tower fortification of Nora (Pula, Sardinia, Italy) 742
Ancient restoration and production technologies of Roman mortars from monuments placed in hydrogeological risk areas: a case study 721
Definizione, nel Monte Arci, di possibili siti di provenienza di manufatti ossidianacei, mediterranei, per mezzo della loro caratterizzazione petrografica e geochimica 718
Comparative pottery technology between the Middle Ages and Modern times (Santarém, Portugal) 687
The coastal fortification of Cape de Forma (Menorca, Spain): petrophysical characterization and alteration of stones and ancient mortars 683
LIBS analysis to define the alteration processes on the surface of ancient stones: the case study of Romanesque medieval monuments (Italy) 680
Secondary mineral phases and ancient treatments on limestone from Monte Prama nuraghic statues (Sardinia, Italy) 673
Asce eneolitiche in pietra scheggiata della Sardegna centro occidentale. Dati preliminari petrografici e geochimici e implicazioni archeometriche 672
Caratterizzazione minero-petrografica e fisica delle rocce granitoidi utilizzate nella costruzione di alcuni edifici storici nell’area di Tempio Pausania: indagini preliminari 671
Aeneolhitic chipped-stone axes from mid-western Sardinia (Preliminary Petrographic and Geochemical Data and Archeological Implications) 671
Chemical reactivity of pozzolans from Sardinia for the production of hydraulic limes 666
Un approccio interdisciplinare allo studio dei Bacini ceramici nella Sardegna medievale: il caso della chiesa di San Pietro di Ponte a Quartu Sant’Elena (CA) 648
Petrografia e mineralogia delle sabbie dei litorali sardi nord-occidentali antistanti le coste della Corsica: origini e provenienze dei materiali 641
Malte ‘fortificate’: lo studio delle malte di allettamento nei fortini peruzziani delle mura di Siena (Italia) 638
A petro-chemical study of ancient mortars from the archaeological site of Kyme (Turkey) 634
Cultural heritage documentation and conservation: Three-dimensional (3D) laser scanning and geographical information system (GIS) techniques for thematic mapping of facade stonework of St. Nicholas Church (Pisa, Italy) 634
Petrographic characterisation of polished stone axes from Neolithic Sardinia, archaeological implications 628
Archaeometric approach for studying architectural earthenwares from the archaeological site of s. Omobono (Rome-Italy) 624
The ancient mortars of Serravalle fortification (Bosa, Italy): a case study 618
An archaeometric contribution to the study of ancient millstones from the Mulargia area (Sardinia, Italy) through new analytical data on volcanic raw material and archaeological items from Hellenistic and Roman North Africa 613
Provenance and decay of the volcanic rocks used in the roman theatre of Nora (SW Sardinia, Italy). Further data and new considerations 609
Totale 122.205
Salva come PNG Salva come JPEG
Categoria #
all - tutte 166.181
article - articoli 0
book - libri 0
conference - conferenze 0
curatela - curatele 0
other - altro 0
patent - brevetti 0
selected - selezionate 0
volume - volumi 0
Totale 166.181
Salva come PNG Salva come JPEG


Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2018/20191.364 0 0 0 0 0 0 0 0 0 266 656 442
2019/202028.389 1.475 1.078 144 349 10.556 6.944 4.106 861 473 836 495 1.072
2020/202139.188 1.252 1.286 1.585 11.319 8.394 4.194 2.741 2.405 867 1.892 1.858 1.395
2021/20228.143 1.061 417 492 478 403 680 500 340 493 1.029 1.022 1.228
2022/202313.119 1.221 1.541 1.258 950 976 1.559 790 1.289 804 828 1.252 651
2023/202421.363 746 559 677 914 1.367 2.997 2.085 10.162 997 859 0 0
Totale 139.516