Catalogo dei prodotti della ricerca

MASI, Umberto
 Distribuzione geografica
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Continente #
NA - Nord America 4.025
EU - Europa 2.793
AS - Asia 572
SA - Sud America 65
AF - Africa 36
OC - Oceania 3
Totale 7.494
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Nazione #
US - Stati Uniti d'America 3.985
IT - Italia 1.574
UA - Ucraina 549
SE - Svezia 226
IN - India 224
SG - Singapore 172
CN - Cina 150
FI - Finlandia 129
GB - Regno Unito 88
DE - Germania 75
AR - Argentina 49
FR - Francia 36
IE - Irlanda 31
BG - Bulgaria 29
TG - Togo 23
CA - Canada 21
MX - Messico 19
BE - Belgio 17
IR - Iran 14
BR - Brasile 11
GR - Grecia 8
RO - Romania 6
CL - Cile 5
NL - Olanda 4
PT - Portogallo 4
RU - Federazione Russa 4
ZA - Sudafrica 4
AL - Albania 3
CH - Svizzera 3
DK - Danimarca 3
JP - Giappone 3
MA - Marocco 3
NG - Nigeria 3
PK - Pakistan 3
AU - Australia 2
ES - Italia 2
IL - Israele 2
KR - Corea 2
SC - Seychelles 2
TR - Turchia 2
EG - Egitto 1
LT - Lituania 1
LV - Lettonia 1
NZ - Nuova Zelanda 1
Totale 7.494
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Città #
Florence 1.041
Chandler 525
Woodbridge 355
Ann Arbor 320
Fairfield 314
Houston 261
Jacksonville 214
Ashburn 157
Princeton 132
Plano 129
Wilmington 125
Seattle 106
Singapore 99
Cambridge 97
Dearborn 90
Beijing 89
Boardman 82
Millbury 78
Rome 76
Campi Bisenzio 66
Saluzzo 60
San Francesco 55
Federal 49
Andover 41
San Diego 37
Naples 36
Noto 34
Venaria 34
Prato 33
Des Moines 31
Dublin 30
Boston 29
Sofia 29
Norwalk 24
Lawrence 23
Lomé 23
San Paolo di Civitate 22
Falls Church 21
Auburn Hills 19
Brussels 17
Iztapalapa 16
Washington 16
Toronto 14
Nanjing 12
Campinas 11
Bühl 10
Los Angeles 10
Nottingham 10
San Mateo 10
Mannheim 8
Milan 7
Zanjan 6
Guiyang 5
Hefei 5
Horia 5
Kunming 5
Ottawa 5
Philadelphia 5
Buffalo 4
Centrale 4
Pisa 4
Provo 4
Redmond 4
Bern 3
Chongqing 3
Copenhagen 3
Islamabad 3
Montelupone 3
Napoli 3
Pontedera 3
Porto 3
San Jose 3
Zhengzhou 3
Athens 2
Bad Soden am Taunus 2
Baotou 2
Cagliari 2
Casamassima 2
Charleston 2
Chengdu 2
Eichstätt 2
Exeter 2
Fuzhou 2
Greenbelt 2
Kashan 2
Kolkata 2
Lagos 2
Lanciano 2
Laurel 2
Leawood 2
Mexico City 2
Muizenberg 2
New York 2
Perugia 2
Pescara 2
Rocca Massima 2
Salé 2
Santiago 2
Seoul 2
Shanghai 2
Totale 5.267
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Nome #
Constraints from geochemistry and Sr–Nd isotopes for the origin of albitite deposits from Central Sardinia (Italy) 138
Methods for correcting the isotopic fractionation of Fe determined by TIMS 135
Geochemical and Sr-Nd isotopic evidence for the genesis of the Late Cainozoic Almopia volcanic rocks (Central Macedonia, Greece) 125
The Sr-isotope composition of soils: A case study from Muravera (Se Sardinia, Italy) 120
Procedure for separating Fe from geological matrices to carry out isotopic analyses 118
Trace-element and Sr–Nd isotopic evidence for the origin of the Sardinian fluorite mineralization (Italy) 113
Sr-isotopic composition of siderite for assessing the origin of mineralizing fluids: the case study from the Jebel Awam deposit (Central Morocco) 111
Strontium geochemical evidence for the origin of the barite deposits from Sardinia, Italy 106
Strontium isotope evidence for the origin of barite from four mineralisations of the Moroccan Meseta 105
Geochemistry of volcanic rocks from the Eastern Pontides (NE Turkey) and geodynamic significance 100
REE and Nd-isotope evidence for the origin of siderite from the Jebel Awam deposit (Central Morocco) 100
Caratteri geochimici, isotopici e mineralogici dei suoli di Muravera 94
Sr-Nd isotopic patterns in soils from the San Vitale Pinewood (Ravenna, Italy): a landmark ecosystem affected by saline intrusion and anthropic pollution 93
Geochemical characterization of podiform chromite ores from the ultramafic massif of Bulqiza (eastern ophiolitic belt, Albania) and hints for exploration 91
Sr-Nd isotopes of mosses (Hypnum cupressiforme Hdw.) as a tool for studying the atmospheric pollution in north-central Italy 91
Comparison of Sr isotopic ratios from two soils near Ravenna (Italy) using aqua regia and two-step sequential extracts. 91
Sr isotopes and italian wines: an attempt to characterize traceability for the wine origin and marketing 91
Sr-Nd isotopes in mosses from Romagna (Italy) and their environmental significance. 88
Geochemical and isotopic evidence for the origin of rhyolites from Petrota (Northern Thrace, Greece) and geodynamic significance 87
Chemiostratigrafia E petrografia della parte superiore della formazione dolomitica triassica di Filettino (monti Simbruini, Lazio) 87
GEOLOGIC SIGNIFICANCE OF TRACE-ELEMENT ABUNDANCES IN THE RED SCAGLIA LIMESTONES FROM GUBBIO (CENTRAL ITALY) 86
Sr-isotope ratios of a soil profile (badlands) at Radicofani (Southern Tuscany) 86
Stable isotope variations in the Quaternary epithermal calcite-fluorite deposit at Monte delle Fate near Cerveteri (Latium, central Italy) 85
Geochemical balance for the evaluation of the agro-environmental quality of a complex territorial system: the case study of the Ravenna area - Report one year later 84
ELEMENTAL AND SR–ND ISOTOPIC EVIDENCE FOR THE ORIGIN AND GEODYNAMIC SIGNIfiCANCE OF VOLCANIC ROCKS FROM OXYLITHOS (CENTRAL EUBOEA, GREECE) 84
Geochemistry of magmatic rocks from the Lesser Caucasus (Azerbaijan) 83
Sr isotopic evidence for studyng the salinization of soils : an example from the San Vitale Pinewood (Ravenna) 83
Origin and distribution of strontium in the travertines of Latium (central Italy). 82
The Fe isotopic composition of soils and waters from the Ravenna area (Northern Italy) and its significance for environmental studies 80
Use of Sr Isotopes to Constrain Sr (and Ca) Sources in a Mediterranean Soil Profile Near Muravera (SE Sardinia) 79
Significance of major- and trace-element contents of wolframite from the deposits of Panasqueira and Vale das Gatas (Portugal) 78
Distribution and behavior of lead in the K-alkaline rocks from the Roccamonfina volcano (southern Italy) 78
Trace-element distribution in cassiterite and sulfides from rubané and massive ores of the Corvo deposit, Portugal 77
Trace elements and Sr-Nd isotopes in aqua regia extracts to assess pollution in urban and farmland soils from Ravenna (Italy) 77
Composizione isotopica del quarzo e della calcite di ganga del "giacimento argentifero" del Sarrabus (Sardegna sud-orientale) e sue implicazioni genetiche 74
Geochemical evidence on the origin of the epithermal fluorite deposit at Monte delle Fate near Cerveteri (Latium, central Italy) 74
The granitic rocks from Fierza (northeastern Albania) : geochemical evidence of the Jurassic margin of the Balcan Continent 73
A methodology for assessing the maximum exposed radon flux from soils in northern Latium (central Italy) 72
Carbon and oxygen isotope ratios of marbles from some ancient quarries of western Anatolia and their archaeological significance 71
POTENTIALLY TOXIC ELEMENTS, BIOGEOCHEMICAL AND ISOTOPIC MARKERS AS ENVIRONMENTAL QUALITY INDICATORS IN A COMPLEX LAND SYSTEM (RAVENNA, ITALY) 71
Stable isotope evidence for a marine origin of ophicalcites from the northcentral Apennines (Italy) 68
Sr-isotope ratios of central Italy waters to assess their origin 68
The behavior of thallium during alteration of the K-alkaline rocks from the Roccamonfina volcano (Campania, southern Italy) 68
Chemical features of springwaters of the East Africa Rift : a reconnaissance study 66
Composizione isotopica del carbonato di una mineralizzazione a calcite, apatite e fluorite in vene nel cono di scorie pleistocenico di monte Ficoreto, presso Sacrofano (regione sabazia orientale, Lazio) 66
S isotope ratios of sulfide ores from the hydrothermal mineralization in the Tolfa Mountains (Latium, central Italy) and the implications for pyrite prospection 65
Abundance and significance of Cu, Mn and Zn in the sulfides and host rocks from the hydrothermal mineralization of the Tolfa Mountains (Latium, central Italy) 64
Significance of the arsenopyrite composition from the hydrothermal wolframite deposits of Panasqueira and Vale das Gatas (Portugal) 64
Rare earth element and Sr-Nd isotopic evidence for the origin of fluorite from the Silius vein deposit (southeastern Sardinia, Italy) 62
Micro-PIXE analyses of trace elements in ore minerals from the Neves-Corvo deposit (Portugal): preliminary report 61
The Nd-isotope composition of siderite and its bearing for ore genesis : the case study of the Jebel Awam polymetallic deposit (central Morocco) 61
Geochemistry of amphibolites from the Bulqiza metamorphic sole (eastern Albania) and geodynamic significance 61
Geochemical features of the stratabound metamorphosed barite-pyrite (Pb-Ag) deposit of Pollone (Apuan Alps, Tuscany) and genetic implications 60
Procedure for dissolving wolframite in order to determine trace elements by atomic absorption spectrometry 60
An unsuccessful attempt at U/Th dating of soil calcretes from the Doukkali area (western Morocco) and environmental implications 60
Distribuzione dello stronzio nei gessi e nelle anidriti delle formazioni evaporitiche dell' Italia centrale 59
La composizione isotopica dei travertini del Lazio 57
Caratteristiche geochimiche di acque sorgive e di pozzo della zona della piana del Fucino (L'Aquila, Italia centrale) 57
Stable isotope systematics in Mesozoic granites of central and northern California and southwestern Oregon 57
Geochemistry of polymetallic skarn-vein deposit of Fenice Capanne (southern Tuscan, Italy) 56
Significance of muscovite and chlorite composition from the hydrothermal wolframite deposits of Panasqueira and Vale das Gatas (Portugal) and hints for ore exploration 56
Geochemical Features of polymetallic metamorphosed deposit of Arinteiro Galicia,Espana 56
Geochemical and petrographic features of the Mesozoic metamorphosed carbonatic sequence from the Mani peninsula (southern Peloponnesus, Greece) 55
Stable isotope and fluid inclusion studies of carbonate deposits from the Tolfa Mountains mining district (Latium, Central Italy) 54
Chemical features of wall-rocks from Mo-showings of Sardinia (Italy) 53
Strontium geochemistry of barite from the lower Palaeozoic deposits from Tennessee and Nevada (USA) 53
Trace-element behavior during weathering of leucite in potassic rocks from the Roccamonfina volcano (Campania, southern Italy) and environmental applications 53
Geochemistry of plutonic rocks from the northern section of the Rize massif (eastern Pontides, Turkey) 53
Contributo alla conoscenza delle "rocce verdi" dell' Appennino centrale. Nota III. La composizione isotopica della calcite presente in alcuni affioramenti di oficalciti del F.129 (S. Fiora) e sue implicazioni petrologiche 52
Sphalerite-stannite relationships in the wolframite hydrothermal deposits of Panasqueira and Vale das Gatas (Portugal). 52
Geochemistry of sulfide ores from the vein deposit of Koudiat-el-Hamra (Jebilet Mts., central Morocco) and genetic implications 52
Considerazioni geochimiche sull' origine del giacimento di barite e celestite di Pian dell'Organo (Civitavecchia) 51
Geochemical features of the massive pyrrhotite deposit of El-Kettara (Jebilet Mts., central Morocco) and genetic implications 51
Geochemical features of the kaolin deposits from Sardinia (Italy) and genetic implications 51
Effetti isotopici nella diagenesi dei travertini 50
Composition of micas from the lepidolite deposit of Goncalo, Beira Alta (Portugal)and significance for the origin 50
Geochemistry of the fluorite and barite vein mineralization from monte Genis (Sardinia, Italy) 49
Geochemical features of the massive sulfide (Cu) metamorphosed deposit of Arinteiro (Galicia, Spain) and genetic implications 49
Abundance and significance of Co and Ni in the sulfides and host rocks from the hydrothermal mineralization of the Tolfa Mountains (Latium, central Italy) 49
La composizione isotopica dell'ossigeno e del carbonio del carbonato presente nei depositi calcitico-fluoritici pleistocenici dei Colli della Farnesina (Roma) e di Colle di Pianciano (Bracciano) 48
Geochemical features of the "Plattenkalk" series from the Hordaki area (western Crete,Greece) 48
Element abundances in the Mesozoic neritic limestones from the Abbai (Blue Nile) river valley (western Ethiopia) and geologic implications 47
Caratteristiche pedologiche e geochimiche di suoli evoluti su arenarie nella zona di Manciano (Prov. Grosseto, Toscana meridionale) 47
Geochemistry of the polymetallic skarn-vein deposit of Fenice Capanne (southern Tuscany, Italy) and genetic implications 46
Chemostratigraphy of the upper part of the "Calcare di Bari" (Upper Cretaceous) from Polignano (Apulia, southern Italy) 46
Geochemical features of the skarn polymetallic deposit of Valle del Temperino (southern Tuscany, Italy) 45
Abundance and significance of REE's in diopside and salite clinopyroxenes from basic rocks of the Roccamonfina volcano (Roman region, Italy) 45
The geochemistry of sulfide ores from the hydrothermal deposit of Koudiat-el-Hamra (Jebilet Mts., Morocco) 44
Trace-element evidence for the genesis of the pyrite vein deposit of Campiano (southern Tuscany, Italy) 43
Geochemical and petrographic features of the Styra marble (southern Euboea, Greece) and geodynamic implications 43
Significance of the major- and trace-element contents of wolframite from the deposits of Panasqueira and Vale das Gatas (Portugal) 43
Geochemical and petrographic characterization of archaeological remains of “cipollino verde” marble to serve for the provenance of materials (Rome, Italy) 41
MicroPIXE analyses of trace elements in some ore minerals from the Neves-Corvo deposit (Portugal) 41
DISTRIBUTION AND SIGNIFICANCE OF PB AND TI IN THE SULFIDES AND HOST ROCKS FROM THE HYDROTHERMAL MINERALIZATION OF THE TOLFA MOUNTAINS (LATIUM, CENTRAL ITALY) 40
Due aspetti della geochimica di wolframiti naturali: contenuto di elementi in traccia e solubilità in soluzioni saline di wolframiti di depositi portoghesi 40
Geochemistry of sulfide ores from the vein deposit of Koudiat-el-Hamra (Jebilet Mts., central Morocco) 39
Geochemistry of volcanic basic rocks from the Bale Mountains (southeastern Ethiopia) : evidence of crustal contamination. 39
Platinum content in natural and urban soils from Rome, Latium (Italy): significance for pollution by automobile catalytic converter 39
Petrographic and geochemical characterization of calcareous archaeological materials from the Roman town of Herdonia, Apulia (southern Italy) 38
The geochemistry of hydrothermally-altered rocks of the Lower Volcanic Cycle from the eastern Pontides (Trabzon, NE Turkey). 37
Totale 6.789
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Categoria #
all - tutte 16.578
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 16.578
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2019/20201.591 298 102 25 140 81 174 125 152 139 212 111 32
2020/2021472 84 80 10 45 6 60 2 42 12 87 29 15
2021/20221.466 1 95 87 59 189 51 114 121 95 136 246 272
2022/20231.731 220 248 85 271 230 217 4 90 168 53 91 54
2023/2024602 87 86 84 73 10 76 13 27 1 67 26 52
2024/202572 72 0 0 0 0 0 0 0 0 0 0 0
Totale 7.555