UNICA IRIS Institutional Research Information System

COLUMBU, STEFANO
 Distribuzione geografica
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Continente #
EU - Europa 193.905
NA - Nord America 7.184
AS - Asia 3.453
SA - Sud America 811
AF - Africa 148
OC - Oceania 84
Continente sconosciuto - Info sul continente non disponibili 3
Totale 205.588
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Nazione #
IT - Italia 191.368
US - Stati Uniti d'America 7.013
CN - Cina 1.426
SG - Singapore 1.223
BR - Brasile 617
UA - Ucraina 617
SE - Svezia 552
DE - Germania 280
VN - Vietnam 276
GB - Regno Unito 250
FI - Finlandia 182
FR - Francia 141
CA - Canada 93
ES - Italia 80
AU - Australia 77
PT - Portogallo 76
IN - India 71
MA - Marocco 68
TR - Turchia 66
KR - Corea 64
MX - Messico 63
NL - Olanda 58
PE - Perù 54
AR - Argentina 53
HK - Hong Kong 48
BE - Belgio 44
JP - Giappone 43
ID - Indonesia 37
PL - Polonia 37
RU - Federazione Russa 32
EC - Ecuador 29
NO - Norvegia 26
IQ - Iraq 25
BD - Bangladesh 24
GR - Grecia 23
PH - Filippine 22
CZ - Repubblica Ceca 20
ZA - Sudafrica 20
AT - Austria 19
IR - Iran 19
PK - Pakistan 18
CO - Colombia 15
MY - Malesia 14
RO - Romania 14
CL - Cile 12
DZ - Algeria 12
UZ - Uzbekistan 12
CH - Svizzera 11
VE - Venezuela 11
EG - Egitto 10
IE - Irlanda 10
TN - Tunisia 10
DK - Danimarca 9
HR - Croazia 9
IL - Israele 9
PY - Paraguay 9
AE - Emirati Arabi Uniti 8
AZ - Azerbaigian 8
UY - Uruguay 8
ET - Etiopia 7
NG - Nigeria 7
MT - Malta 6
NZ - Nuova Zelanda 6
TW - Taiwan 6
AL - Albania 5
EE - Estonia 5
LT - Lituania 5
SA - Arabia Saudita 5
HU - Ungheria 4
KE - Kenya 4
KG - Kirghizistan 4
PA - Panama 4
TH - Thailandia 4
CR - Costa Rica 3
EU - Europa 3
JO - Giordania 3
LV - Lettonia 3
MD - Moldavia 3
NP - Nepal 3
OM - Oman 3
RS - Serbia 3
SI - Slovenia 3
AM - Armenia 2
BG - Bulgaria 2
BH - Bahrain 2
BO - Bolivia 2
CI - Costa d'Avorio 2
CY - Cipro 2
DO - Repubblica Dominicana 2
JM - Giamaica 2
KW - Kuwait 2
MK - Macedonia 2
SK - Slovacchia (Repubblica Slovacca) 2
SY - Repubblica araba siriana 2
TZ - Tanzania 2
AO - Angola 1
BA - Bosnia-Erzegovina 1
BJ - Benin 1
BW - Botswana 1
BY - Bielorussia 1
Totale 205.575
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Città #
Cagliari 186.312
Uta 3.893
Dallas 650
Singapore 547
Ashburn 508
Fairfield 498
Chandler 492
Boardman 422
Nyköping 399
Houston 390
Woodbridge 389
Beijing 333
Ann Arbor 309
Wilmington 282
Jacksonville 281
Seattle 188
Cambridge 179
Dearborn 168
Santa Clara 135
Nanjing 130
Los Angeles 113
Shanghai 105
Helsinki 95
New York 78
Redwood City 77
Rome 77
Ho Chi Minh City 76
Dong Ket 75
Milan 65
Boston 63
Buffalo 61
Hefei 57
Shenyang 52
São Paulo 52
Casablanca 50
Seoul 49
San Diego 48
Padova 41
Arequipa 40
Changsha 39
London 39
Nanchang 39
Atlanta 38
Munich 38
Redondo Beach 38
Council Bluffs 37
Hanoi 37
Sassari 37
The Dalles 37
Guangzhou 36
Hebei 35
Mountain View 34
Toronto 34
Hong Kong 29
Tianjin 27
Jinan 26
Tokyo 26
Washington 25
Brisbane 23
Jiaxing 23
Athens 22
Montclair 22
Istanbul 21
Norwalk 21
Aguascalientes 20
Chicago 20
Columbus 20
Lisbon 20
Florence 19
Orange 19
Rio de Janeiro 19
Turin 18
Évora 18
Verona 17
Augusta 16
Oxford 16
Auburn Hills 15
Brussels 15
Jakarta 15
Oslo 15
Warsaw 15
Curitiba 14
Hangzhou 14
Montreal 14
Ningbo 14
Nuremberg 14
Phoenix 14
Stockholm 14
Brooklyn 13
Haiphong 13
San Jose 13
Taizhou 13
Wuhan 13
Belo Horizonte 12
Pune 12
Redmond 12
San Francisco 12
Tübingen 12
Valencia 12
Zhengzhou 12
Totale 199.106
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Nome #
Petrographic and mineralogical charecterization of volcanic rocks and surface-depositions on romanesque monuments 10.852
Analisi composizionale comparativa delle malte di allettamento delle Fortezze del Peruzzi e dei Medici prima e dopo la caduta dello Stato di Siena 5.569
Mineralogical, petrographic, and physical investigations on fossiliferous middle Jurassic sandstones from central Sardinia (Italy) to define their alteration and experimental consolidation 5.533
Mineralogical-chemical alteration and origin of ignimbritic stones used in the old Cathedral of Nostra Signora di Castro (Sardinia, Italy) 5.507
Romanesque and territory. The construction materials of Sardinian medieval churches: new approaches to the valorization, conservation and restoration 5.470
Geochemical, mineral-petrographic and physical-mechanical characterization of stones and mortars from the Romanesque Saccargia Basilica (Sardinia, Italy) to define their origin and alteration 4.386
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 4.371
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications located in different climatic conditions 3.577
(FeCo/Ppy@C): Pt-free FeCo-Polypyrrole Nanocomposites Supported on Porous Carbon for Electrochemical Application 3.228
The monumental submerged punic harbor of Malfatano and associated Piscinnì quarries, Archaeometric and Geoarchaeological approach 3.153
From the fortresses of Peruzzi to the Medici fortress: study of the entrapment mortars before and after the fall of the State of Siena 3.045
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications 3.005
The ancient pozzolanic mortars and concretes of Heliocaminus baths in Hadrian's Villa (Tivoli, Italy) 2.958
Comparative pottery technology between the Middle Ages and Modern times (Santarém, Portugal) 2.873
Uso del granito nel centro storico di Tempio Pausania (Sardegna NE): un approccio multisciplinare 2.836
Provenance of marbles from Baths of Nero (Pisa, Italy) 2.770
Examining the reactivity of volcanic ash in ancient mortars by using a micro-chemical approach 2.517
Alteration processes of geomaterials used on the pentagonal tower of Serravalle Castle (central-west Sardinia, Italy) 2.512
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications 2.433
The ancient pozzolanic mortars and raw materials of the Heliocaminus baths in Hadrian's Villa (Italy) 2.354
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 2.244
Petrographic features of foliated leucocratic body in the Migmatite Complex from northeastern Sardinia 2.114
Petrophysical properties of a granite-protomylonite-ultramylonite sequence: insight from the Monte Grighini shear zone, central Sardinia, Italy 2.043
Il quartiere edilizio ritrovato sotto la chiesa di Sant’Eulalia a Cagliari 2.037
Relations between static-structural aspects, construction phases and building materials of San Saturnino Basilica (Cagliari, Italy) 2.036
Methodological approach in the conservation of coastal fortifications 2.017
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) 1.975
Origin of Roman worked stones from St. Saturno christian basilica (South Sardinia, Italy) 1.910
Laser-Induced Breakdown Spectroscopy analysis of the limestone Nuragic statues from Mont'e Prama site (Sardinia, Italy) 1.908
Petrographic and physical investigations on geomaterials for conservation of Las Plassas Castle (Marmilla, Sardinia, Italy) 1.763
Digital mapping, building technique and petrographic characterisation of stones from Opera Punta Rossa fortification (Caprera, north Sardinia) 1.756
Geochemical characterization of migmatized orthogneiss from Porto Ottiolu (NE Sardinia, Italy) and its inferences on partial melting process 1.736
Archaeometric study of mortars from the Pisa's Cathedral Square (Italy) 1.619
ABITARE NEL MEDITERRANEO TARDOANTICO Atti del II Convegno Internazionale del Centro Interuniversitario di Studi sull’Edilizia abitativa tardoantica nel Mediterraneo (CISEM) (Bologna 2-5 marzo 2016) 1.617
Mappatura digitale, tecniche costruttive e caratterizzazione petrografica delle pietre della fortificazione di Punta Rossa (Caprera) 1.606
TRANSITION FROM PROTOMYLONITE TO ULTRAMYLONITE IN THE VARISCAN LEUCOGRANITE FROM MONTE GRIGHINI COMPLEX, WEST-CENTRAL SARDINIA: PRELIMINARY PETROGRAPHIC AND PETROPHYSICAL DATA 1.603
Geochemical and petrographic analysis on the stones and integrated digital survey of the Cathedral of Sant'Antioco di Bisarcio (Ozieri, Italy) 1.600
Ammonium monoethyloxalate (AmEtOx): a new agent for the conservation of carbonate stone substrates 1.593
Petrophysical properties of Variscan mylonitic leucogranite of Monte Grighine, west-central Sardinia 1.587
Mineralogical, petrographic and physical-mechanical study of Roman construction materials from the Maritime Theatre of Hadrian's Villa (Rome, Italy) 1.571
Physical-mechanical consolidation and protection of Miocenic limestone used on Mediterranean historical monuments: the case study of Pietra Cantone (southern Sardinia, Italy) 1.560
Chronological classification of ancient mortars employing spectroscopy and spectrometry techniques: Sagunto (Valencia, Spain) Case 1.540
The Sant’Antioco di Bisarcio Romanesque Basilica (NE Sardinia, Italy): traces of ancient treatments on the stone materials of the façades 1.514
Historic masonry of Middle Ages in Sardinia: materials and building techniques as motivating reasons for iconographic choices 1.452
Roman mortars and raw materials from the Maritime Theater of Roman Hadrian's Villa (Rome, Italy) 1.434
Mineralogical-compositional variations in the production technologies of mortars used in some Italian medieval fortifications located in different territorial and historical contexts 1.423
Petrographic, geochemical and physical characterization of volcanic rocks from the fortification of Bosa Castle (western Sardinia, Italy) 1.402
Mineralogical, petrographic and chemical analysis of geomaterials used in the mortars of Roman Nora theatre (south Sardinia, Italy) 1.393
Archaeometric study of the Roman marbles reused in the late Antiquity St. Saturnino Basilica (Cagliari, Italy) 1.356
The Santa Croce wall structure of Cagliari's ancient fortifications (Sardinia, Italy): construction technologies and stone decay 1.341
Workability and chemical-physical degradation of limestone frequently used in historical Mediterranean architecture 1.319
Le vulcaniti mioceniche sarde utilizzate come materiali costruttivi nell’architettura storica: l’esempio della chiesa romanica di San Pietro di Zuri (Sardegna, Italia) 1.276
Geochemical and petrophysical characterization of volcanic raw materials with pozzolanic activity used in Roman ancient mortars: some case study 1.274
Petrographic and geochemical investigations on the volcanic rocks used in the Punic-Roman archaeological site of Nora (Sardinia, Italy) 1.257
Decay and provenance of the volcanic rocks used to construct the pentagonal tower of the medieval castle of Serravalle (Bosa, W Sardinia, Italy) 1.244
Alteration of stone materials on Sardinian medieval monuments: physical, chemical and petrographic analysis for their restoration and preservation 1.240
Characterization of ancient coloured paintings on the mortars from the ‘Teatro Marittimo’ of Roman Hadrian's Villa (Rome, Italy) 1.220
Pyroclastic Stones as Building Materials in Medieval Romanesque Architecture of Sardinia (Italy): Chemical-Physical Features of Rocks and Associated Alterations 1.217
Contribution of petrophysical analysis and 3D digital survey in the archaeometric investigations of the Emperor Hadrian’s Baths (Tivoli, Italy) 1.205
Secondary mineral phases and ancient treatments on limestone from Monte de Prama nuragic statues (Sardinia, Italy) 1.196
I monumenti megalitici di Ellès e Mididi nella regione di Maktar. Caratteri geologici, geomorfologici e petrografici dell’Alto Tell tunisino 1.180
Use of stone and construction technologies in the medieval and modern fortifications of Cagliari (south-Sardinia, Italy) 1.164
K/Na-silicate, ethyl-silicate and silane nano-molecular treatments in the restoration of high porous limestone 1.151
Caratterizzazione mineralogico-petrografica delle malte del teatro di Nora (Sardegna sud occidentale) 1.130
Hydric dilatation of ignimbritic stones used in the Church of Santa Maria di Otti (Oschiri, northern Sardinia, Italy) 1.097
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 1.082
Strategies for helium pycnometry density measurements of welded ignimbritic rocks 1.064
The stones of the medieval ‘San Mamiliano di Simassi’ church (SW Sardinia, Italy): characterization and state of conservation 1.061
Caratterizzazione mineralogico-petrografica e provenienza delle vulcaniti del teatro romano di Nora (Sardegna sud occidentale) 1.048
The construction materials and static-structural aspects of the Budello tower (Teulada, south-west Sardinia, Italy) 1.043
Provenance and alteration of pyroclastic rocks from the Romanesque Churches of Logudoro (north Sardinia, Italy) using a petrographic and geochemical statistical approach 1.040
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 1.012
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 1.010
Asce in pietra di insediamenti eneolitici dell’alto Campidano, Sardegna centro occidentale - Italia. (Caratterizzazione petrochimica e implicazioni archeologiche) 1.002
Compositional analysis of the stones and ancient mortars of the Nora medieval tower fortification (south Sardinia, Italy) 999
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) 974
Ancient restoration and production technologies of Roman mortars from monuments placed in hydrogeological risk areas: a case study 970
I monumenti megalitici di Ellès e Madidi nella regione di Maktar – Caratteri geologici, geomorfologici e petrografici dell’Alto Tell tunisino 956
Asce eneolitiche in pietra scheggiata della Sardegna centro occidentale. Dati preliminari petrografici e geochimici e implicazioni archeometriche 952
Malte ‘fortificate’: lo studio delle malte di allettamento nei fortini peruzziani delle mura di Siena (Italia) 945
Chemical-physical decay of volcanic stone from Santa Maria Church in Tergu (Anglona, Italy) 931
The ancient mortars and geomaterials of tower fortification of Nora (Pula, Sardinia, Italy) 929
Ca-oxalate and alteration films on the stones of the medieval Romanesque Sardinian monuments (Italy) 927
null 918
Geochemical and mineralogical alteration on the stone and mortar surfaces of medieval churches (Sardinia, Italy): weathering processes, ancient conservation treatments and their microstratigraphy 913
Manuale sui materiali lapidei vulcanici della Sardegna centrale e dei loro principali impieghi nel costruito 911
Giant garnet crystals in wollastonite–grossularite–diopside-bearing marbles from Tamarispa (NE Sardinia, Italy): geosite potential, conservation, and evaluation as part of a regional environmental resource 911
Obsidian in the geochemical-petrographical evolution of Plio-Quaternary volcanics from Monte Arci 907
LIBS analysis to define the alteration processes on the surface of ancient stones: the case study of Romanesque medieval monuments (Italy) 905
The coastal fortification of Cape de Forma (Menorca, Spain): petrophysical characterization and alteration of stones and ancient mortars 866
Archaeometric approach for studying architectural earthenwares from the archaeological site of s. Omobono (Rome-Italy) 861
Chemical reactivity of pozzolans from Sardinia for the production of hydraulic limes 851
Definizione, nel Monte Arci, di possibili siti di provenienza di manufatti ossidianacei, mediterranei, per mezzo della loro caratterizzazione petrografica e geochimica 818
Secondary mineral phases and ancient treatments on limestone from Monte Prama nuraghic statues (Sardinia, Italy) 817
Ca-oxalate films on the stones of the medieval architecture: the case-study of Romanesque Churches 812
Lime and Cement Plasters from 20th Century Buildings: Raw Materials and Relations between Mineralogical–Petrographic Characteristics and Chemical–Physical Compatibility with the Limestone Substrate 808
Petrographic characterisation of polished stone axes from Neolithic Sardinia, archaeological implications 795
Caratterizzazione minero-petrografica e fisica delle rocce granitoidi utilizzate nella costruzione di alcuni edifici storici nell’area di Tempio Pausania: indagini preliminari 795
Characterization of Roman and medieval mortars from the Pisa’s Cathedral Square (Italy) 790
A petro-chemical study of ancient mortars from the archaeological site of Kyme (Turkey) 785
Totale 180.277
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Categoria #
all - tutte 254.052
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 254.052
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2020/202115.352 0 0 0 0 0 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
2023/202425.077 746 559 677 914 1.367 2.997 2.085 10.162 997 1.307 1.855 1.411
2024/202558.643 30.457 11.704 5.466 3.472 1.522 1.971 2.487 219 448 272 320 305
2025/20264.214 568 405 1.201 1.127 560 353 0 0 0 0 0 0
Totale 206.087