UNICA IRIS Institutional Research Information System

COLUMBU, STEFANO
 Distribuzione geografica
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Continente #
EU - Europa 195.245
NA - Nord America 8.089
AS - Asia 4.637
SA - Sud America 909
AF - Africa 178
OC - Oceania 85
Continente sconosciuto - Info sul continente non disponibili 4
Totale 209.147
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Nazione #
IT - Italia 192.247
US - Stati Uniti d'America 7.892
SG - Singapore 1.800
CN - Cina 1.578
BR - Brasile 662
UA - Ucraina 621
SE - Svezia 554
VN - Vietnam 428
DE - Germania 423
FR - Francia 304
GB - Regno Unito 284
FI - Finlandia 249
HK - Hong Kong 140
IN - India 122
CA - Canada 101
ES - Italia 87
PT - Portogallo 80
AU - Australia 78
MX - Messico 73
MA - Marocco 72
TR - Turchia 71
NL - Olanda 69
AR - Argentina 67
KR - Corea 65
PE - Perù 56
BD - Bangladesh 55
JP - Giappone 50
ID - Indonesia 49
BE - Belgio 47
RU - Federazione Russa 40
IQ - Iraq 39
PL - Polonia 39
PH - Filippine 37
PK - Pakistan 35
EC - Ecuador 34
NO - Norvegia 26
CO - Colombia 24
MY - Malesia 24
GR - Grecia 23
ZA - Sudafrica 23
CL - Cile 22
UZ - Uzbekistan 22
CZ - Repubblica Ceca 20
IR - Iran 20
AT - Austria 19
VE - Venezuela 19
RO - Romania 17
EG - Egitto 15
TN - Tunisia 14
PY - Paraguay 13
AE - Emirati Arabi Uniti 12
CH - Svizzera 12
DZ - Algeria 12
AZ - Azerbaigian 11
DK - Danimarca 11
IE - Irlanda 11
IL - Israele 11
HR - Croazia 9
NP - Nepal 9
TH - Thailandia 9
UY - Uruguay 9
ET - Etiopia 8
JO - Giordania 8
KE - Kenya 8
SA - Arabia Saudita 8
NG - Nigeria 7
MT - Malta 6
NZ - Nuova Zelanda 6
OM - Oman 6
TW - Taiwan 6
AL - Albania 5
EE - Estonia 5
LT - Lituania 5
HU - Ungheria 4
JM - Giamaica 4
KG - Kirghizistan 4
LV - Lettonia 4
PA - Panama 4
SI - Slovenia 4
BG - Bulgaria 3
BH - Bahrain 3
CI - Costa d'Avorio 3
CR - Costa Rica 3
EU - Europa 3
GT - Guatemala 3
MD - Moldavia 3
MK - Macedonia 3
MU - Mauritius 3
RS - Serbia 3
SK - Slovacchia (Repubblica Slovacca) 3
AM - Armenia 2
AO - Angola 2
BJ - Benin 2
BO - Bolivia 2
BW - Botswana 2
CY - Cipro 2
DO - Repubblica Dominicana 2
HN - Honduras 2
KW - Kuwait 2
LB - Libano 2
Totale 209.120
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Città #
Cagliari 187.119
Uta 3.893
Singapore 872
Dallas 654
Ashburn 588
Fairfield 498
Chandler 492
San Jose 487
Boardman 430
Nyköping 399
Houston 390
Woodbridge 389
Beijing 347
Ann Arbor 309
Wilmington 282
Jacksonville 281
Seattle 189
Cambridge 179
Dearborn 168
Helsinki 161
Santa Clara 146
Nuremberg 140
Los Angeles 135
Nanjing 132
Lauterbourg 129
Ho Chi Minh City 128
Hong Kong 113
Council Bluffs 112
Shanghai 108
The Dalles 99
New York 87
Rome 83
Redwood City 77
Dong Ket 75
Hanoi 75
Milan 66
Boston 64
Buffalo 62
Hefei 57
São Paulo 54
Shenyang 52
Casablanca 51
Seoul 50
Orem 49
San Diego 48
Atlanta 45
Changsha 43
Guangzhou 42
Padova 41
Arequipa 40
London 40
Nanchang 39
Munich 38
Redondo Beach 38
Sassari 37
Hebei 35
Mountain View 34
Toronto 34
Tokyo 31
Tianjin 27
Jinan 26
Washington 26
Chicago 24
Jiaxing 24
Brisbane 23
Athens 22
Jakarta 22
Montclair 22
Rio de Janeiro 22
Columbus 21
Istanbul 21
Norwalk 21
Aguascalientes 20
Lisbon 20
Florence 19
Frankfurt am Main 19
Orange 19
Turin 19
Mumbai 18
Évora 18
Amsterdam 17
Verona 17
Augusta 16
Chennai 16
Da Nang 16
Oxford 16
Tashkent 16
Warsaw 16
Auburn Hills 15
Brussels 15
Curitiba 15
Haiphong 15
Hangzhou 15
Ningbo 15
Oslo 15
Pune 15
Basingstoke 14
Brooklyn 14
Montreal 14
Phoenix 14
Totale 201.615
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Nome #
Petrographic and mineralogical charecterization of volcanic rocks and surface-depositions on romanesque monuments 10.885
Analisi composizionale comparativa delle malte di allettamento delle Fortezze del Peruzzi e dei Medici prima e dopo la caduta dello Stato di Siena 5.603
Mineralogical, petrographic, and physical investigations on fossiliferous middle Jurassic sandstones from central Sardinia (Italy) to define their alteration and experimental consolidation 5.570
Mineralogical-chemical alteration and origin of ignimbritic stones used in the old Cathedral of Nostra Signora di Castro (Sardinia, Italy) 5.535
Romanesque and territory. The construction materials of Sardinian medieval churches: new approaches to the valorization, conservation and restoration 5.520
Geochemical, mineral-petrographic and physical-mechanical characterization of stones and mortars from the Romanesque Saccargia Basilica (Sardinia, Italy) to define their origin and alteration 4.419
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 4.390
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications located in different climatic conditions 3.610
(FeCo/Ppy@C): Pt-free FeCo-Polypyrrole Nanocomposites Supported on Porous Carbon for Electrochemical Application 3.256
The monumental submerged punic harbor of Malfatano and associated Piscinnì quarries, Archaeometric and Geoarchaeological approach 3.186
From the fortresses of Peruzzi to the Medici fortress: study of the entrapment mortars before and after the fall of the State of Siena 3.063
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications 3.039
The ancient pozzolanic mortars and concretes of Heliocaminus baths in Hadrian's Villa (Tivoli, Italy) 3.003
Comparative pottery technology between the Middle Ages and Modern times (Santarém, Portugal) 2.902
Uso del granito nel centro storico di Tempio Pausania (Sardegna NE): un approccio multisciplinare 2.849
Provenance of marbles from Baths of Nero (Pisa, Italy) 2.786
Examining the reactivity of volcanic ash in ancient mortars by using a micro-chemical approach 2.551
Alteration processes of geomaterials used on the pentagonal tower of Serravalle Castle (central-west Sardinia, Italy) 2.537
Chemical-physical agents and biodeteriogens in the alteration of limestones used in coastal historical fortifications 2.478
The ancient pozzolanic mortars and raw materials of the Heliocaminus baths in Hadrian's Villa (Italy) 2.394
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 2.283
Petrographic features of foliated leucocratic body in the Migmatite Complex from northeastern Sardinia 2.166
Relations between static-structural aspects, construction phases and building materials of San Saturnino Basilica (Cagliari, Italy) 2.070
Petrophysical properties of a granite-protomylonite-ultramylonite sequence: insight from the Monte Grighini shear zone, central Sardinia, Italy 2.069
Il quartiere edilizio ritrovato sotto la chiesa di Sant’Eulalia a Cagliari 2.063
Methodological approach in the conservation of coastal fortifications 2.049
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) 1.991
Origin of Roman worked stones from St. Saturno christian basilica (South Sardinia, Italy) 1.937
Laser-Induced Breakdown Spectroscopy analysis of the limestone Nuragic statues from Mont'e Prama site (Sardinia, Italy) 1.937
Petrographic and physical investigations on geomaterials for conservation of Las Plassas Castle (Marmilla, Sardinia, Italy) 1.790
Digital mapping, building technique and petrographic characterisation of stones from Opera Punta Rossa fortification (Caprera, north Sardinia) 1.767
Geochemical characterization of migmatized orthogneiss from Porto Ottiolu (NE Sardinia, Italy) and its inferences on partial melting process 1.760
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) 1.647
Archaeometric study of mortars from the Pisa's Cathedral Square (Italy) 1.640
Ammonium monoethyloxalate (AmEtOx): a new agent for the conservation of carbonate stone substrates 1.636
Mappatura digitale, tecniche costruttive e caratterizzazione petrografica delle pietre della fortificazione di Punta Rossa (Caprera) 1.628
Geochemical and petrographic analysis on the stones and integrated digital survey of the Cathedral of Sant'Antioco di Bisarcio (Ozieri, Italy) 1.622
TRANSITION FROM PROTOMYLONITE TO ULTRAMYLONITE IN THE VARISCAN LEUCOGRANITE FROM MONTE GRIGHINI COMPLEX, WEST-CENTRAL SARDINIA: PRELIMINARY PETROGRAPHIC AND PETROPHYSICAL DATA 1.620
Petrophysical properties of Variscan mylonitic leucogranite of Monte Grighine, west-central Sardinia 1.612
Mineralogical, petrographic and physical-mechanical study of Roman construction materials from the Maritime Theatre of Hadrian's Villa (Rome, Italy) 1.589
Physical-mechanical consolidation and protection of Miocenic limestone used on Mediterranean historical monuments: the case study of Pietra Cantone (southern Sardinia, Italy) 1.581
Chronological classification of ancient mortars employing spectroscopy and spectrometry techniques: Sagunto (Valencia, Spain) Case 1.554
The Sant’Antioco di Bisarcio Romanesque Basilica (NE Sardinia, Italy): traces of ancient treatments on the stone materials of the façades 1.535
Historic masonry of Middle Ages in Sardinia: materials and building techniques as motivating reasons for iconographic choices 1.467
Mineralogical-compositional variations in the production technologies of mortars used in some Italian medieval fortifications located in different territorial and historical contexts 1.458
Roman mortars and raw materials from the Maritime Theater of Roman Hadrian's Villa (Rome, Italy) 1.457
Petrographic, geochemical and physical characterization of volcanic rocks from the fortification of Bosa Castle (western Sardinia, Italy) 1.448
Mineralogical, petrographic and chemical analysis of geomaterials used in the mortars of Roman Nora theatre (south Sardinia, Italy) 1.410
Archaeometric study of the Roman marbles reused in the late Antiquity St. Saturnino Basilica (Cagliari, Italy) 1.383
The Santa Croce wall structure of Cagliari's ancient fortifications (Sardinia, Italy): construction technologies and stone decay 1.361
Workability and chemical-physical degradation of limestone frequently used in historical Mediterranean architecture 1.350
Le vulcaniti mioceniche sarde utilizzate come materiali costruttivi nell’architettura storica: l’esempio della chiesa romanica di San Pietro di Zuri (Sardegna, Italia) 1.303
Geochemical and petrophysical characterization of volcanic raw materials with pozzolanic activity used in Roman ancient mortars: some case study 1.289
Petrographic and geochemical investigations on the volcanic rocks used in the Punic-Roman archaeological site of Nora (Sardinia, Italy) 1.276
Decay and provenance of the volcanic rocks used to construct the pentagonal tower of the medieval castle of Serravalle (Bosa, W Sardinia, Italy) 1.272
Alteration of stone materials on Sardinian medieval monuments: physical, chemical and petrographic analysis for their restoration and preservation 1.256
Pyroclastic Stones as Building Materials in Medieval Romanesque Architecture of Sardinia (Italy): Chemical-Physical Features of Rocks and Associated Alterations 1.249
Characterization of ancient coloured paintings on the mortars from the ‘Teatro Marittimo’ of Roman Hadrian's Villa (Rome, Italy) 1.241
Secondary mineral phases and ancient treatments on limestone from Monte de Prama nuragic statues (Sardinia, Italy) 1.229
Contribution of petrophysical analysis and 3D digital survey in the archaeometric investigations of the Emperor Hadrian’s Baths (Tivoli, Italy) 1.215
I monumenti megalitici di Ellès e Mididi nella regione di Maktar. Caratteri geologici, geomorfologici e petrografici dell’Alto Tell tunisino 1.202
Use of stone and construction technologies in the medieval and modern fortifications of Cagliari (south-Sardinia, Italy) 1.187
K/Na-silicate, ethyl-silicate and silane nano-molecular treatments in the restoration of high porous limestone 1.166
Caratterizzazione mineralogico-petrografica delle malte del teatro di Nora (Sardegna sud occidentale) 1.144
Hydric dilatation of ignimbritic stones used in the Church of Santa Maria di Otti (Oschiri, northern Sardinia, Italy) 1.118
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 1.108
Strategies for helium pycnometry density measurements of welded ignimbritic rocks 1.091
The construction materials and static-structural aspects of the Budello tower (Teulada, south-west Sardinia, Italy) 1.082
The stones of the medieval ‘San Mamiliano di Simassi’ church (SW Sardinia, Italy): characterization and state of conservation 1.080
Caratterizzazione mineralogico-petrografica e provenienza delle vulcaniti del teatro romano di Nora (Sardegna sud occidentale) 1.062
Provenance and alteration of pyroclastic rocks from the Romanesque Churches of Logudoro (north Sardinia, Italy) using a petrographic and geochemical statistical approach 1.047
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 1.037
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 1.024
Compositional analysis of the stones and ancient mortars of the Nora medieval tower fortification (south Sardinia, Italy) 1.024
Asce in pietra di insediamenti eneolitici dell’alto Campidano, Sardegna centro occidentale - Italia. (Caratterizzazione petrochimica e implicazioni archeologiche) 1.021
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) 1.011
Asce eneolitiche in pietra scheggiata della Sardegna centro occidentale. Dati preliminari petrografici e geochimici e implicazioni archeometriche 988
Ancient restoration and production technologies of Roman mortars from monuments placed in hydrogeological risk areas: a case study 988
I monumenti megalitici di Ellès e Madidi nella regione di Maktar – Caratteri geologici, geomorfologici e petrografici dell’Alto Tell tunisino 983
Malte ‘fortificate’: lo studio delle malte di allettamento nei fortini peruzziani delle mura di Siena (Italia) 969
Chemical-physical decay of volcanic stone from Santa Maria Church in Tergu (Anglona, Italy) 957
Ca-oxalate and alteration films on the stones of the medieval Romanesque Sardinian monuments (Italy) 953
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 948
Manuale sui materiali lapidei vulcanici della Sardegna centrale e dei loro principali impieghi nel costruito 941
The ancient mortars and geomaterials of tower fortification of Nora (Pula, Sardinia, Italy) 941
Geochemical and mineralogical alteration on the stone and mortar surfaces of medieval churches (Sardinia, Italy): weathering processes, ancient conservation treatments and their microstratigraphy 932
LIBS analysis to define the alteration processes on the surface of ancient stones: the case study of Romanesque medieval monuments (Italy) 929
Obsidian in the geochemical-petrographical evolution of Plio-Quaternary volcanics from Monte Arci 925
null 918
Chemical reactivity of pozzolans from Sardinia for the production of hydraulic limes 890
The coastal fortification of Cape de Forma (Menorca, Spain): petrophysical characterization and alteration of stones and ancient mortars 886
Archaeometric approach for studying architectural earthenwares from the archaeological site of s. Omobono (Rome-Italy) 878
Lime and Cement Plasters from 20th Century Buildings: Raw Materials and Relations between Mineralogical–Petrographic Characteristics and Chemical–Physical Compatibility with the Limestone Substrate 846
Ca-oxalate films on the stones of the medieval architecture: the case-study of Romanesque Churches 841
Secondary mineral phases and ancient treatments on limestone from Monte Prama nuraghic statues (Sardinia, Italy) 838
Definizione, nel Monte Arci, di possibili siti di provenienza di manufatti ossidianacei, mediterranei, per mezzo della loro caratterizzazione petrografica e geochimica 834
Caratterizzazione minero-petrografica e fisica delle rocce granitoidi utilizzate nella costruzione di alcuni edifici storici nell’area di Tempio Pausania: indagini preliminari 820
Petrographic characterisation of polished stone axes from Neolithic Sardinia, archaeological implications 818
A petro-chemical study of ancient mortars from the archaeological site of Kyme (Turkey) 811
The ancient mortars of Serravalle fortification (Bosa, Italy): a case study 810
Totale 182.834
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Categoria #
all - tutte 259.780
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 259.780
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2020/20215.145 0 0 0 0 0 0 0 0 0 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
2025/20267.776 568 405 1.201 1.127 560 593 1.135 451 604 1.132 0 0
Totale 209.649