Class information for:
Level 2: OIL SHALE//OIL SHALE ASH//VANADYL PORPHYRINS

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
3064 2426 23.8 42%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
18 4 THERMODYNAMICS//ENERGY & FUELS//ENGINEERING, CHEMICAL 531182
381 3       FUEL//HYDRODESULFURIZATION//ENERGY & FUELS 31814
3064 2             OIL SHALE//OIL SHALE ASH//VANADYL PORPHYRINS 2426
7053 1                   OIL SHALE//OIL SHALE ASH//SHALE OIL 1411
15383 1                   VANADYL PORPHYRINS//STERYL CHLORIN ESTERS//PETROPORPHYRINS 715
29624 1                   OIL SHALE//NE ESTONIAN//NE ESTONIA 182
33931 1                   CHEMICAL TYPE OF OIL//ELEMENT ENRICHMENT FACTORS//MERCURY IN SOILS 118

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 OIL SHALE journal 3820038 19% 66% 458
2 OIL SHALE ASH authKW 195224 1% 48% 32
3 VANADYL PORPHYRINS authKW 191419 1% 89% 17
4 SHALE OIL authKW 183132 2% 33% 44
5 RETORTING authKW 143810 1% 57% 20
6 NE ESTONIAN address 129816 1% 74% 14
7 ENGINEERING, PETROLEUM WoSSC 118078 22% 2% 540
8 STERYL CHLORIN ESTERS authKW 100679 0% 100% 8
9 ENGN OIL SHALE COMPREHENS UTILIZAT address 84590 0% 61% 11
10 FUEL journal 81472 13% 2% 310

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Engineering, Petroleum 118078 22% 2% 540
2 Energy & Fuels 58595 50% 0% 1201
3 Engineering, Chemical 13514 32% 0% 765
4 Geochemistry & Geophysics 2127 9% 0% 214
5 Chemistry, Analytical 831 9% 0% 226
6 Thermodynamics 789 5% 0% 126
7 Spectroscopy 317 4% 0% 92
8 Chemistry, Applied 203 4% 0% 85
9 Chemistry, Organic 162 5% 0% 131
10 Environmental Sciences 121 5% 0% 130

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 NE ESTONIAN 129816 1% 74% 14
2 OIL SHALE 111931 1% 68% 13
3 ENGN OIL SHALE COMPREHENS UTILIZAT 84590 0% 61% 11
4 THERMAL ENERGY ENGN 76614 2% 16% 38
5 OIL SHALE RENEWABLES 73217 0% 73% 8
6 GEOCHEM COSMOCHEM 72503 0% 52% 11
7 OIL SHALE TECHNOL 44040 0% 50% 7
8 REACT SYST SOLIDE GAZ 40270 0% 80% 4
9 SHALE OIL PLANT 37755 0% 100% 3
10 SHALE OIL REFINERY 37755 0% 100% 3

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 OIL SHALE 3820038 19% 66% 458
2 FUEL 81472 13% 2% 310
3 ORGANIC GEOCHEMISTRY 30383 4% 2% 99
4 ENERGY & FUELS 19423 6% 1% 136
5 FUEL PROCESSING TECHNOLOGY 13190 3% 1% 73
6 GEOKHIMIYA 7626 2% 1% 43
7 ENERGY SOURCES 7062 1% 2% 26
8 JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 5363 2% 1% 40
9 INDUSTRIAL & ENGINEERING CHEMISTRY PROCESS DESIGN AND DEVELOPMENT 4570 1% 2% 19
10 SOLID FUEL CHEMISTRY 4367 0% 3% 11

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 OIL SHALE 2519005 15% 57% 354 Search OIL+SHALE Search OIL+SHALE
2 OIL SHALE ASH 195224 1% 48% 32 Search OIL+SHALE+ASH Search OIL+SHALE+ASH
3 VANADYL PORPHYRINS 191419 1% 89% 17 Search VANADYL+PORPHYRINS Search VANADYL+PORPHYRINS
4 SHALE OIL 183132 2% 33% 44 Search SHALE+OIL Search SHALE+OIL
5 RETORTING 143810 1% 57% 20 Search RETORTING Search RETORTING
6 STERYL CHLORIN ESTERS 100679 0% 100% 8 Search STERYL+CHLORIN+ESTERS Search STERYL+CHLORIN+ESTERS
7 PETROPORPHYRINS 78648 0% 63% 10 Search PETROPORPHYRINS Search PETROPORPHYRINS
8 GEOPORPHYRINS 77081 0% 88% 7 Search GEOPORPHYRINS Search GEOPORPHYRINS
9 OIL SHALE SEMICOKE 77081 0% 88% 7 Search OIL+SHALE+SEMICOKE Search OIL+SHALE+SEMICOKE
10 KEROGEN 74707 2% 12% 49 Search KEROGEN Search KEROGEN

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref.
in cl.		 Shr. of ref. in
cl.		 Citations
1 HAN, XX , KULAOTS, I , JIANG, XM , SUUBERG, EM , (2014) REVIEW OF OIL SHALE SEMICOKE AND ITS COMBUSTION UTILIZATION.FUEL. VOL. 126. ISSUE . P. 143-161 52 83% 25
2 LASH, TD , LI, W , QUIZON-COLQUITT, DM , (2007) PORPHYRINS WITH EXOCYCLIC RINGS. PART 22: SYNTHESIS OF DEOXOPHYLLOERYTHROETIOPORPHYRIN (DPEP), THREE RING HOMOLOGUES, AND FIVE RELATED NONPOLAR BACTERIOPETROPORPHYRINS USING A WESTERN RING CLOSURE AND AN IMPROVED B-BILENE METHODOLOGY.TETRAHEDRON. VOL. 63. ISSUE 50. P. 12324 -12342 69 82% 6
3 ZHAO, X , XU, CM , SHI, Q , (2016) PORPHYRINS IN HEAVY PETROLEUMS: A REVIEW.STRUCTURE AND MODELING OF COMPLEX PETROLEUM MIXTURES. VOL. 168. ISSUE . P. 39 -70 59 65% 1
4 SHINER, CM , LASH, TD , (2005) PORPHYRINS WITH EXOCYCLIC RINGS. PART 21: INFLUENCE OF PYRROLIC AND CARBOCYCLIC RING ALKYL SUBSTITUENTS ON THE SYNTHESIS OF PORPHYRINS BEARING SIX-MEMBERED EXOCYCLIC RINGS.TETRAHEDRON. VOL. 61. ISSUE 49. P. 11628 -11640 43 88% 67
5 WANG, W , MA, Y , LI, SY , YUE, CT , WU, JX , TENG, JS , (2016) PYROLYSIS CHARACTERISTICS OF LONGKOU OIL SHALE UNDER OPTIMIZED CONDITION.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY. VOL. 125. ISSUE 2. P. 983 -990 32 97% 0
6 SMITH, BE , LASH, TD , (2010) PORPHYRINS WITH EXOCYCLIC RINGS. PART 25: SYNTHESIS OF PORPHYRINS WITH A FUSED CYCLIC ETHER SUBUNIT FROM TETRAHYDRO-4H-PYAN-4-ONE.TETRAHEDRON. VOL. 66. ISSUE 25. P. 4413 -4422 46 75% 8
7 KASHIYAMA, Y , KITAZATO, H , OHKOUCHI, N , (2007) AN IMPROVED METHOD FOR ISOLATION AND PURIFICATION OF SEDIMENTARY PORPHYRINS BY HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY FOR COMPOUND-SPECIFIC ISOTOPIC ANALYSIS.JOURNAL OF CHROMATOGRAPHY A. VOL. 1138. ISSUE 1-2. P. 73 -83 40 93% 13
8 GUO, HF , PEI, YS , WANG, KK , CHENG, QX , DING, Y , JIN, Z , YANG, YD , WU, QC , LIU, YY , (2015) IDENTIFYING THE REACTION MECHANISM OF OIL-SHALE SELF-HEATING RETORTING BY THERMAL ANALYSIS TECHNIQUES.FUEL. VOL. 160. ISSUE . P. 255 -264 34 83% 0
9 CHEN, MY , CHENG, YP , LI, W , (2015) EXPLOITATION AND UTILIZATION OF OIL SHALE IN THE COAL MEASURE STRATA OF THE HAISHIWAN MINE, YAOJIE COALFIELD, CHINA.OIL SHALE. VOL. 32. ISSUE 4. P. 335 -355 34 83% 0
10 WANG, S , LIU, JX , JIANG, XM , HAN, XX , TONG, JH , (2013) EFFECT OF HEATING RATE ON PRODUCTS YIELD AND CHARACTERISTICS OF NON-CONDENSABLE GASES AND SHALE OIL OBTAINED BY RETORTING DACHENGZI OIL SHALE.OIL SHALE. VOL. 30. ISSUE 1. P. 27-47 30 94% 7

Classes with closest relation at Level 2


Rank Class id link
1 1990 ASPHALTENES//NAPHTHENIC ACIDS//ENERGY & FUELS
2 498 ORGANIC GEOCHEMISTRY//PETR EXPLORAT DEV//MARINE AND PETROLEUM GEOLOGY
3 781 FUEL//COAL//INTERNATIONAL JOURNAL OF COAL GEOLOGY
4 152 GASIFICATION//PYROLYSIS//FUEL
5 3908 HYDROTHERMAL PETROLEUM//VACUUM TOWER BOTTOMS//PETROLEUM CHEMISTRY
6 2251 PYROLYSIS//WASTE PLASTICS//END OF LIFE VEHICLES
7 1318 HYDRODESULFURIZATION//OXIDATIVE DESULFURIZATION//DIBENZOTHIOPHENE
8 220 PORPHYRINOIDS//PORPHYRIN//JOURNAL OF PORPHYRINS AND PHTHALOCYANINES
9 2238 ORGANIC GEOCHEMISTRY//MARINE ORGAN BIOGEOCHEM//ALKENONES
10 3148 CASTABLE//REFRACTORY//REFRACTORY CASTABLES

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