Catalogo dei prodotti della ricerca

MASI, Umberto
 Distribuzione geografica
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Continente #
NA - Nord America 4.228
EU - Europa 3.054
AS - Asia 1.407
SA - Sud America 238
AF - Africa 46
OC - Oceania 5
Totale 8.978
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Nazione #
US - Stati Uniti d'America 4.173
IT - Italia 1.648
SG - Singapore 780
UA - Ucraina 550
IN - India 230
SE - Svezia 229
CN - Cina 187
BR - Brasile 175
HK - Hong Kong 162
FI - Finlandia 144
RU - Federazione Russa 116
GB - Regno Unito 97
DE - Germania 93
AR - Argentina 52
FR - Francia 40
CA - Canada 32
IE - Irlanda 31
BG - Bulgaria 30
TG - Togo 23
MX - Messico 22
BE - Belgio 18
IR - Iran 14
ES - Italia 12
NL - Olanda 9
GR - Grecia 8
AL - Albania 6
JP - Giappone 6
MA - Marocco 6
RO - Romania 6
CL - Cile 5
NG - Nigeria 5
PT - Portogallo 5
ZA - Sudafrica 5
AU - Australia 4
CH - Svizzera 4
EC - Ecuador 4
KR - Corea 4
PK - Pakistan 4
BD - Bangladesh 3
DK - Danimarca 3
ID - Indonesia 3
IL - Israele 3
TR - Turchia 3
DZ - Algeria 2
LT - Lituania 2
SC - Seychelles 2
AT - Austria 1
AZ - Azerbaigian 1
BN - Brunei Darussalam 1
CG - Congo 1
CO - Colombia 1
EG - Egitto 1
KE - Kenya 1
KZ - Kazakistan 1
LB - Libano 1
LV - Lettonia 1
NZ - Nuova Zelanda 1
OM - Oman 1
PA - Panama 1
PE - Perù 1
PL - Polonia 1
SA - Arabia Saudita 1
UZ - Uzbekistan 1
VN - Vietnam 1
Totale 8.978
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Città #
Florence 1.057
Chandler 525
Singapore 434
Woodbridge 355
Ann Arbor 320
Fairfield 314
Houston 261
Jacksonville 214
Hong Kong 158
Ashburn 157
Princeton 132
Plano 129
Wilmington 125
Seattle 107
Beijing 102
Cambridge 97
Dearborn 90
Rome 85
Boardman 83
Millbury 78
Santa Clara 72
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
Moscow 30
Boston 29
Sofia 29
Norwalk 24
Lawrence 23
Lomé 23
Toronto 23
San Paolo di Civitate 22
Falls Church 21
Auburn Hills 19
Brussels 17
Yubileyny 17
Helsinki 16
Iztapalapa 16
Washington 16
Bologna 14
Falkenstein 14
Los Angeles 13
Campinas 12
Nanjing 12
Cosenza 11
Nottingham 11
São Paulo 11
Bühl 10
Milan 10
San Mateo 10
Hefei 9
Mannheim 9
Chicago 8
Madrid 7
Philadelphia 6
Zanjan 6
Belo Horizonte 5
Betim 5
Brasília 5
Columbus 5
Guiyang 5
Horia 5
Kunming 5
Ottawa 5
Pisa 5
Tokyo 5
Zhengzhou 5
Buffalo 4
Centrale 4
Curitiba 4
New York 4
Provo 4
Redmond 4
Rio de Janeiro 4
San Jose 4
Seoul 4
Shanghai 4
Bern 3
Chongqing 3
Copenhagen 3
Corvallis 3
Dallas 3
Goiânia 3
Islamabad 3
Jakarta 3
Lagos 3
Montelupone 3
Nanchang 3
Napoli 3
Pelotas 3
Pontedera 3
Totale 6.036
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Nome #
Constraints from geochemistry and Sr–Nd isotopes for the origin of albitite deposits from Central Sardinia (Italy) 166
Methods for correcting the isotopic fractionation of Fe determined by TIMS 144
Geochemical and Sr-Nd isotopic evidence for the genesis of the Late Cainozoic Almopia volcanic rocks (Central Macedonia, Greece) 133
Procedure for separating Fe from geological matrices to carry out isotopic analyses 130
The Sr-isotope composition of soils: A case study from Muravera (Se Sardinia, Italy) 130
Trace-element and Sr–Nd isotopic evidence for the origin of the Sardinian fluorite mineralization (Italy) 122
Sr-isotopic composition of siderite for assessing the origin of mineralizing fluids: the case study from the Jebel Awam deposit (Central Morocco) 122
Comparison of Sr isotopic ratios from two soils near Ravenna (Italy) using aqua regia and two-step sequential extracts. 121
Strontium geochemical evidence for the origin of the barite deposits from Sardinia, Italy 118
Caratteri geochimici, isotopici e mineralogici dei suoli di Muravera 116
Strontium isotope evidence for the origin of barite from four mineralisations of the Moroccan Meseta 113
The Fe isotopic composition of soils and waters from the Ravenna area (Northern Italy) and its significance for environmental studies 111
Geochemistry of volcanic rocks from the Eastern Pontides (NE Turkey) and geodynamic significance 110
REE and Nd-isotope evidence for the origin of siderite from the Jebel Awam deposit (Central Morocco) 109
Chemiostratigrafia E petrografia della parte superiore della formazione dolomitica triassica di Filettino (monti Simbruini, Lazio) 104
Geochemical characterization of podiform chromite ores from the ultramafic massif of Bulqiza (eastern ophiolitic belt, Albania) and hints for exploration 102
Stable isotope variations in the Quaternary epithermal calcite-fluorite deposit at Monte delle Fate near Cerveteri (Latium, central Italy) 102
Sr isotopes and italian wines: an attempt to characterize traceability for the wine origin and marketing 101
Sr-isotope ratios of a soil profile (badlands) at Radicofani (Southern Tuscany) 100
Sr-Nd isotopic patterns in soils from the San Vitale Pinewood (Ravenna, Italy): a landmark ecosystem affected by saline intrusion and anthropic pollution 99
Sr-Nd isotopes of mosses (Hypnum cupressiforme Hdw.) as a tool for studying the atmospheric pollution in north-central Italy 99
GEOLOGIC SIGNIFICANCE OF TRACE-ELEMENT ABUNDANCES IN THE RED SCAGLIA LIMESTONES FROM GUBBIO (CENTRAL ITALY) 98
Geochemical and isotopic evidence for the origin of rhyolites from Petrota (Northern Thrace, Greece) and geodynamic significance 97
Distribution and behavior of lead in the K-alkaline rocks from the Roccamonfina volcano (southern Italy) 96
Sr-Nd isotopes in mosses from Romagna (Italy) and their environmental significance. 96
ELEMENTAL AND SR–ND ISOTOPIC EVIDENCE FOR THE ORIGIN AND GEODYNAMIC SIGNIfiCANCE OF VOLCANIC ROCKS FROM OXYLITHOS (CENTRAL EUBOEA, GREECE) 95
Composizione isotopica del quarzo e della calcite di ganga del "giacimento argentifero" del Sarrabus (Sardegna sud-orientale) e sue implicazioni genetiche 94
Sr isotopic evidence for studyng the salinization of soils : an example from the San Vitale Pinewood (Ravenna) 92
Carbon and oxygen isotope ratios of marbles from some ancient quarries of western Anatolia and their archaeological significance 92
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 91
Trace-element distribution in cassiterite and sulfides from rubané and massive ores of the Corvo deposit, Portugal 91
Geochemistry of magmatic rocks from the Lesser Caucasus (Azerbaijan) 90
Origin and distribution of strontium in the travertines of Latium (central Italy). 89
Significance of major- and trace-element contents of wolframite from the deposits of Panasqueira and Vale das Gatas (Portugal) 88
Use of Sr Isotopes to Constrain Sr (and Ca) Sources in a Mediterranean Soil Profile Near Muravera (SE Sardinia) 86
Trace elements and Sr-Nd isotopes in aqua regia extracts to assess pollution in urban and farmland soils from Ravenna (Italy) 86
Chemical features of springwaters of the East Africa Rift : a reconnaissance study 86
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) 86
The granitic rocks from Fierza (northeastern Albania) : geochemical evidence of the Jurassic margin of the Balcan Continent 84
Geochemical evidence on the origin of the epithermal fluorite deposit at Monte delle Fate near Cerveteri (Latium, central Italy) 84
A methodology for assessing the maximum exposed radon flux from soils in northern Latium (central Italy) 83
Sr-isotope ratios of central Italy waters to assess their origin 83
Significance of muscovite and chlorite composition from the hydrothermal wolframite deposits of Panasqueira and Vale das Gatas (Portugal) and hints for ore exploration 82
S isotope ratios of sulfide ores from the hydrothermal mineralization in the Tolfa Mountains (Latium, central Italy) and the implications for pyrite prospection 80
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) 80
Caratteristiche geochimiche di acque sorgive e di pozzo della zona della piana del Fucino (L'Aquila, Italia centrale) 79
Rare earth element and Sr-Nd isotopic evidence for the origin of fluorite from the Silius vein deposit (southeastern Sardinia, Italy) 79
Geochemical features of the stratabound metamorphosed barite-pyrite (Pb-Ag) deposit of Pollone (Apuan Alps, Tuscany) and genetic implications 77
POTENTIALLY TOXIC ELEMENTS, BIOGEOCHEMICAL AND ISOTOPIC MARKERS AS ENVIRONMENTAL QUALITY INDICATORS IN A COMPLEX LAND SYSTEM (RAVENNA, ITALY) 77
An unsuccessful attempt at U/Th dating of soil calcretes from the Doukkali area (western Morocco) and environmental implications 77
Stable isotope evidence for a marine origin of ophicalcites from the northcentral Apennines (Italy) 75
The behavior of thallium during alteration of the K-alkaline rocks from the Roccamonfina volcano (Campania, southern Italy) 75
Significance of the arsenopyrite composition from the hydrothermal wolframite deposits of Panasqueira and Vale das Gatas (Portugal) 74
Micro-PIXE analyses of trace elements in ore minerals from the Neves-Corvo deposit (Portugal): preliminary report 74
Procedure for dissolving wolframite in order to determine trace elements by atomic absorption spectrometry 72
Abundance and significance of Co and Ni in the sulfides and host rocks from the hydrothermal mineralization of the Tolfa Mountains (Latium, central Italy) 71
Geochemical features of the massive sulfide (Cu) metamorphosed deposit of Arinteiro (Galicia, Spain) and genetic implications 70
Geochemistry of amphibolites from the Bulqiza metamorphic sole (eastern Albania) and geodynamic significance 70
Considerazioni geochimiche sull' origine del giacimento di barite e celestite di Pian dell'Organo (Civitavecchia) 69
Geochemical Features of polymetallic metamorphosed deposit of Arinteiro Galicia,Espana 68
Distribuzione dello stronzio nei gessi e nelle anidriti delle formazioni evaporitiche dell' Italia centrale 67
The Nd-isotope composition of siderite and its bearing for ore genesis : the case study of the Jebel Awam polymetallic deposit (central Morocco) 67
Geochemical and petrographic features of the Mesozoic metamorphosed carbonatic sequence from the Mani peninsula (southern Peloponnesus, Greece) 66
Caratteristiche pedologiche e geochimiche di suoli evoluti su arenarie nella zona di Manciano (Prov. Grosseto, Toscana meridionale) 66
Composition of micas from the lepidolite deposit of Goncalo, Beira Alta (Portugal)and significance for the origin 66
Stable isotope systematics in Mesozoic granites of central and northern California and southwestern Oregon 66
Geochemistry of polymetallic skarn-vein deposit of Fenice Capanne (southern Tuscan, Italy) 65
Chemical features of wall-rocks from Mo-showings of Sardinia (Italy) 64
La composizione isotopica dei travertini del Lazio 63
Element abundances in the Mesozoic neritic limestones from the Abbai (Blue Nile) river valley (western Ethiopia) and geologic implications 63
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 62
Geochemical features of the massive pyrrhotite deposit of El-Kettara (Jebilet Mts., central Morocco) and genetic implications 62
Abundance and significance of REE's in diopside and salite clinopyroxenes from basic rocks of the Roccamonfina volcano (Roman region, Italy) 62
Geochemistry of sulfide ores from the vein deposit of Koudiat-el-Hamra (Jebilet Mts., central Morocco) and genetic implications 62
Evidence for mild diagenesis in archaeological human bones from the Fewet necropolis (SW Libya). New insights and Implications from ATR–FTIR spectroscopy 62
Effetti isotopici nella diagenesi dei travertini 61
Trace-element behavior during weathering of leucite in potassic rocks from the Roccamonfina volcano (Campania, southern Italy) and environmental applications 61
Stable isotope and fluid inclusion studies of carbonate deposits from the Tolfa Mountains mining district (Latium, Central Italy) 61
Geochemistry of the fluorite and barite vein mineralization from monte Genis (Sardinia, Italy) 60
Strontium geochemistry of barite from the lower Palaeozoic deposits from Tennessee and Nevada (USA) 60
Sphalerite-stannite relationships in the wolframite hydrothermal deposits of Panasqueira and Vale das Gatas (Portugal). 60
Geochemistry of plutonic rocks from the northern section of the Rize massif (eastern Pontides, Turkey) 59
Chemostratigraphy of the upper part of the "Calcare di Bari" (Upper Cretaceous) from Polignano (Apulia, southern Italy) 58
Geochemical features of the kaolin deposits from Sardinia (Italy) and genetic implications 58
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) 56
DISTRIBUTION AND SIGNIFICANCE OF PB AND TI IN THE SULFIDES AND HOST ROCKS FROM THE HYDROTHERMAL MINERALIZATION OF THE TOLFA MOUNTAINS (LATIUM, CENTRAL ITALY) 56
Geochemical features of the skarn polymetallic deposit of Valle del Temperino (southern Tuscany, Italy) 55
Due aspetti della geochimica di wolframiti naturali: contenuto di elementi in traccia e solubilità in soluzioni saline di wolframiti di depositi portoghesi 55
Geochemistry of the polymetallic skarn-vein deposit of Fenice Capanne (southern Tuscany, Italy) and genetic implications 54
Geochemical and petrographic features of the Styra marble (southern Euboea, Greece) and geodynamic implications 52
The geochemistry of sulfide ores from the hydrothermal deposit of Koudiat-el-Hamra (Jebilet Mts., Morocco) 52
Geochemical features of the "Plattenkalk" series from the Hordaki area (western Crete,Greece) 51
Trace-element evidence for the genesis of the pyrite vein deposit of Campiano (southern Tuscany, Italy) 50
Geochemical and petrographic characterization of archaeological remains of “cipollino verde” marble to serve for the provenance of materials (Rome, Italy) 50
MicroPIXE analyses of trace elements in some ore minerals from the Neves-Corvo deposit (Portugal) 50
Distribution and behaviour of litium in the K-alkaline rocks from the Roccamonfina volcano (Campania, Southern Italy) 50
Geochemistry of sulfide ores from the vein deposit of Koudiat-el-Hamra (Jebilet Mts., central Morocco) 49
Petrographic and geochemical characterization of calcareous archaeological materials from the Roman town of Herdonia, Apulia (southern Italy) 49
Geochemistry of volcanic basic rocks from the Bale Mountains (southeastern Ethiopia) : evidence of crustal contamination. 49
Platinum content in natural and urban soils from Rome, Latium (Italy): significance for pollution by automobile catalytic converter 49
Totale 8.016
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Categoria #
all - tutte 22.928
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 22.928
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Totale Lug Ago Sett Ott Nov Dic Gen Feb Mar Apr Mag Giu
2019/202032 0 0 0 0 0 0 0 0 0 0 0 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
2024/20251.557 94 148 66 14 91 85 89 127 298 215 103 227
Totale 9.040