Class information for:
Level 1: QUADRUPOLE ION TRAP//QUADRUPOLE MASS FILTER//RECTILINEAR ION TRAP

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
0 4 ONCOLOGY//CELL BIOLOGY//BIOCHEMISTRY & MOLECULAR BIOLOGY 2934640
133 3       BIOCHEMICAL RESEARCH METHODS//JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY//PROTEOMICS 67621
193 2             JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY//RAPID COMMUNICATIONS IN MASS SPECTROMETRY//INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 20810
6851 1                   QUADRUPOLE ION TRAP//QUADRUPOLE MASS FILTER//RECTILINEAR ION TRAP 1462

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 QUADRUPOLE ION TRAP authKW 1073133 6% 54% 92
2 QUADRUPOLE MASS FILTER authKW 380087 2% 77% 23
3 RECTILINEAR ION TRAP authKW 260206 1% 93% 13
4 MINIATURE MASS SPECTROMETER authKW 222356 1% 74% 14
5 SECULAR FREQUENCY authKW 215556 1% 100% 10
6 CYLINDRICAL ION TRAP authKW 200630 1% 85% 11
7 INTERNATIONAL JOURNAL OF MASS SPECTROMETRY journal 195993 17% 4% 250
8 RESONANCE EJECTION authKW 194001 1% 100% 9
9 ION TRAP authKW 186652 5% 12% 73
10 JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY journal 168924 13% 4% 194

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Spectroscopy 63016 56% 0% 821
2 Chemistry, Analytical 18781 48% 0% 709
3 Biochemical Research Methods 11563 30% 0% 436
4 Physics, Atomic, Molecular & Chemical 6122 26% 0% 380
5 Instruments & Instrumentation 604 7% 0% 105
6 Chemistry, Physical 493 15% 0% 220
7 Physics, Applied 223 11% 0% 160
8 Nuclear Science & Technology 7 1% 0% 21
9 Materials Science, Coatings & Films 6 1% 0% 14
10 Engineering, General 5 1% 0% 15

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ANALYT RUMENTAT DEV 93314 2% 18% 24
2 GIPSE 64667 0% 100% 3
3 OPT SEMICOND DEVICE SECT 48499 0% 75% 3
4 EQUIPE IPCN 43111 0% 100% 2
5 SHANGHAI MOL CATALYSIS FUNCT MAT 38798 0% 60% 3
6 UAM1 28740 0% 67% 2
7 ADV COMP SYST TECHNOL GRP 21556 0% 100% 1
8 ARBEITSBEREICH MIKROSYSTEMTECH 21556 0% 100% 1
9 ATMOSPHER ENVIRONM SECUR POLLUT CONTROL EN 21556 0% 100% 1
10 BIOCHEM MASS SPE OCHEM OURCE 21556 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 195993 17% 4% 250
2 JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 168924 13% 4% 194
3 RAPID COMMUNICATIONS IN MASS SPECTROMETRY 74664 12% 2% 177
4 INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES 66392 4% 5% 61
5 EUROPEAN JOURNAL OF MASS SPECTROMETRY 16845 2% 3% 28
6 JOURNAL OF MASS SPECTROMETRY 16777 3% 2% 51
7 ANALYTICAL CHEMISTRY 16080 11% 0% 166
8 ORGANIC MASS SPECTROMETRY 2624 1% 1% 16
9 MASS SPECTROMETRY REVIEWS 1882 1% 1% 8
10 CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 1248 1% 0% 20

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 QUADRUPOLE ION TRAP 1073133 6% 54% 92 Search QUADRUPOLE+ION+TRAP Search QUADRUPOLE+ION+TRAP
2 QUADRUPOLE MASS FILTER 380087 2% 77% 23 Search QUADRUPOLE+MASS+FILTER Search QUADRUPOLE+MASS+FILTER
3 RECTILINEAR ION TRAP 260206 1% 93% 13 Search RECTILINEAR+ION+TRAP Search RECTILINEAR+ION+TRAP
4 MINIATURE MASS SPECTROMETER 222356 1% 74% 14 Search MINIATURE+MASS+SPECTROMETER Search MINIATURE+MASS+SPECTROMETER
5 SECULAR FREQUENCY 215556 1% 100% 10 Search SECULAR+FREQUENCY Search SECULAR+FREQUENCY
6 CYLINDRICAL ION TRAP 200630 1% 85% 11 Search CYLINDRICAL+ION+TRAP Search CYLINDRICAL+ION+TRAP
7 RESONANCE EJECTION 194001 1% 100% 9 Search RESONANCE+EJECTION Search RESONANCE+EJECTION
8 ION TRAP 186652 5% 12% 73 Search ION+TRAP Search ION+TRAP
9 MASS FILTER 163008 1% 69% 11 Search MASS+FILTER Search MASS+FILTER
10 DIGITAL ION TRAP 153963 1% 71% 10 Search DIGITAL+ION+TRAP Search DIGITAL+ION+TRAP

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 10024 FTMS//FT ICR//ION CYCLOTRON ONANCE PROGRAM
2 11474 INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES//RRKM CALCULATION//CREAT INITIAT CONTROL REACT DYNAM
3 15298 MEMBRANE INTRODUCTION MASS SPECTROMETRY//MEMBRANE EXTRACTION//PL ENVIRONM S
4 2885 TRAPPED IONS//TIME FREQUENCY//ION TRAP
5 7453 ION ION REACTIONS//ELECTRON CAPTURE DISSOCIATION//ELECTRON TRANSFER DISSOCIATION
6 15404 PENTAQUADRUPOLE MASS SPECTROMETRY//ORGANIC MASS SPECTROMETRY//ACYLIUM IONS
7 27106 ELECTROSTATIC STORAGE RING//CHARGE DETECTION MASS SPECTROMETRY//CYCLIC ACCELERATOR
8 6662 SHEATHLESS INTERFACE//CAPILLARY ELECTROPHORESIS MASS SPECTROMETRY//NANOELECTROSPRAY
9 14108 MULTI TURN TIME OF FLIGHT MASS SPECTROMETER//SECOND ORDER FOCUSING//SIMION
10 35883 SPACE PLANETARY SCI//INTER IAL ELE OCHEM GRP//REMOTE LASER MASS SPECTROSCOPY

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