Class information for:
Level 1: LEAN NOX TRAP//NOX STORAGE//NOX STORAGE REDUCTION

Basic class information
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
1 4 PHYSICS, CONDENSED MATTER//PHYSICS, APPLIED//MATERIALS SCIENCE, MULTIDISCIPLINARY 2188495
10 3       JOURNAL OF CATALYSIS//CHEMISTRY, PHYSICAL//APPLIED CATALYSIS A-GENERAL 144576
912 2             SELECTIVE CATALYTIC REDUCTION//SCR//NH3 SCR 11395
9875 1                   LEAN NOX TRAP//NOX STORAGE//NOX STORAGE REDUCTION 1144

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 LEAN NOX TRAP authKW 2704925 10% 90% 109
2 NOX STORAGE authKW 2362607 9% 79% 108
3 NOX STORAGE REDUCTION authKW 1803493 6% 92% 71
4 NSR authKW 1193355 5% 76% 57
5 NOX STORAGE AND REDUCTION authKW 1113507 4% 84% 48
6 NOX TRAP authKW 1052456 4% 93% 41
7 NOX STORAGE REDUCTION CATALYST authKW 827301 3% 97% 31
8 NOX STORAGE CATALYST authKW 744746 2% 97% 28
9 PT BA AL2O3 authKW 708370 3% 86% 30
10 DIESEL OXIDATION CATALYST authKW 565915 4% 48% 43

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Chemistry, Physical 16311 77% 0% 882
2 Engineering, Chemical 15408 48% 0% 553
3 Chemistry, Applied 8505 26% 0% 297
4 Engineering, Environmental 7215 20% 0% 234
5 Nanoscience & Nanotechnology 230 6% 0% 67
6 Transportation Science & Technology 69 1% 0% 13
7 Engineering, Petroleum 53 1% 0% 9
8 Materials Science, Multidisciplinary 39 8% 0% 91
9 Energy & Fuels 23 2% 0% 28
10 Environmental Sciences 10 3% 0% 40

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INTER IAL CATALYSIS 368947 4% 28% 48
2 FUELS ENGINES EMISS 324203 3% 37% 32
3 CATALYSIS CATALYT PROC 280327 3% 31% 33
4 COMPETENCE CATALYSIS 252375 5% 15% 61
5 NEMAS 136020 2% 22% 22
6 NEMAS EXCELLENCE 110192 0% 100% 4
7 TIANJIN CATALYSIS SCI ENGN 68865 0% 50% 5
8 ENGN CHEM FERTILIZE CATALYST 55096 0% 100% 2
9 ENGN MECH DIRECT 55096 0% 100% 2
10 GR E COMBUST EMISS CONTROL 55096 0% 100% 2

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 APPLIED CATALYSIS B-ENVIRONMENTAL 135020 17% 2% 198
2 TOPICS IN CATALYSIS 128789 10% 4% 117
3 CATALYSIS TODAY 62211 13% 1% 153
4 CATALYSIS LETTERS 8306 4% 1% 48
5 JOURNAL OF CATALYSIS 6768 5% 0% 56
6 CATALYSIS SURVEYS FROM JAPAN 3536 0% 4% 3
7 JOHNSON MATTHEY TECHNOLOGY REVIEW 3391 0% 4% 3
8 JOURNAL OF PHYSICAL CHEMISTRY C 2595 5% 0% 57
9 CHINESE JOURNAL OF CATALYSIS 2388 2% 0% 18
10 CATALYSIS COMMUNICATIONS 2157 2% 0% 20

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 LEAN NOX TRAP 2704925 10% 90% 109 Search LEAN+NOX+TRAP Search LEAN+NOX+TRAP
2 NOX STORAGE 2362607 9% 79% 108 Search NOX+STORAGE Search NOX+STORAGE
3 NOX STORAGE REDUCTION 1803493 6% 92% 71 Search NOX+STORAGE+REDUCTION Search NOX+STORAGE+REDUCTION
4 NSR 1193355 5% 76% 57 Search NSR Search NSR
5 NOX STORAGE AND REDUCTION 1113507 4% 84% 48 Search NOX+STORAGE+AND+REDUCTION Search NOX+STORAGE+AND+REDUCTION
6 NOX TRAP 1052456 4% 93% 41 Search NOX+TRAP Search NOX+TRAP
7 NOX STORAGE REDUCTION CATALYST 827301 3% 97% 31 Search NOX+STORAGE+REDUCTION+CATALYST Search NOX+STORAGE+REDUCTION+CATALYST
8 NOX STORAGE CATALYST 744746 2% 97% 28 Search NOX+STORAGE+CATALYST Search NOX+STORAGE+CATALYST
9 PT BA AL2O3 708370 3% 86% 30 Search PT+BA+AL2O3 Search PT+BA+AL2O3
10 DIESEL OXIDATION CATALYST 565915 4% 48% 43 Search DIESEL+OXIDATION+CATALYST Search DIESEL+OXIDATION+CATALYST

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.

Classes with closest relation at Level 1


rank cluster_id2 link
1 5831 SOOT OXIDATION//SOOT COMBUSTION//DIESEL PARTICULATE FILTER
2 11987 CATALYTIC CONVERTER//LIGHT OFF//HYDROCARBON TRAP
3 727 CU ZSM 5//HC SCR//AG AL2O3
4 1292 SELECTIVE CATALYTIC REDUCTION//NH3 SCR//SCR
5 2169 OXYGEN STORAGE CAPACITY//THREE WAY CATALYST//CERIA ZIRCONIA
6 30774 TEMPORAL ANALYSIS OF PRODUCTS//TAP REACTOR//TEMPORAL ANALYSIS OF PRODUCTS TAP
7 5848 METHANE COMBUSTION//CATALYTIC COMBUSTION//HEXAALUMINATE
8 15895 SULFUR TRANSFER CATALYST//SO2 ADSORPTION//SO2 REMOVAL
9 25871 UREA SCR//SELECTIVE CATALYTIC REDUCTION SYSTEM//UREA DECOMPOSITION
10 7367 SUR E REACT DYNAM//SURFACE SCIENCE//NITROGEN OXIDES

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