Class information for:
Level 1: TOBACCO SPECIFIC N NITROSAMINES//NNK//NNAL

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
12937 807 34.0 65%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
54 28869 TOBACCO CONTROL//SMOKING CESSATION//NICOTINE & TOBACCO RESEARCH

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 TOBACCO SPECIFIC N NITROSAMINES Author keyword 32 88% 2% 15
2 NNK Author keyword 25 35% 7% 57
3 NNAL Author keyword 23 70% 2% 19
4 TOBACCO SPECIFIC NITROSAMINE Author keyword 19 74% 2% 14
5 TOBACCO SPECIFIC NITROSAMINES Author keyword 18 48% 3% 28
6 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANONE NNK Author keyword 14 64% 2% 14
7 MYOSMINE Author keyword 13 71% 1% 10
8 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANOL Author keyword 11 78% 1% 7
9 TOBACCO SPECIFIC N NITROSAMINES TSNA Author keyword 8 100% 1% 5
10 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANONE Author keyword 8 33% 2% 19

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 TOBACCO SPECIFIC N NITROSAMINES 32 88% 2% 15 Search TOBACCO+SPECIFIC+N+NITROSAMINES Search TOBACCO+SPECIFIC+N+NITROSAMINES
2 NNK 25 35% 7% 57 Search NNK Search NNK
3 NNAL 23 70% 2% 19 Search NNAL Search NNAL
4 TOBACCO SPECIFIC NITROSAMINE 19 74% 2% 14 Search TOBACCO+SPECIFIC+NITROSAMINE Search TOBACCO+SPECIFIC+NITROSAMINE
5 TOBACCO SPECIFIC NITROSAMINES 18 48% 3% 28 Search TOBACCO+SPECIFIC+NITROSAMINES Search TOBACCO+SPECIFIC+NITROSAMINES
6 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANONE NNK 14 64% 2% 14 Search 4+METHYLNITROSAMINO+1+3+PYRIDYL+1+BUTANONE+NNK Search 4+METHYLNITROSAMINO+1+3+PYRIDYL+1+BUTANONE+NNK
7 MYOSMINE 13 71% 1% 10 Search MYOSMINE Search MYOSMINE
8 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANOL 11 78% 1% 7 Search 4+METHYLNITROSAMINO+1+3+PYRIDYL+1+BUTANOL Search 4+METHYLNITROSAMINO+1+3+PYRIDYL+1+BUTANOL
9 TOBACCO SPECIFIC N NITROSAMINES TSNA 8 100% 1% 5 Search TOBACCO+SPECIFIC+N+NITROSAMINES+TSNA Search TOBACCO+SPECIFIC+N+NITROSAMINES+TSNA
10 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANONE 8 33% 2% 19 Search 4+METHYLNITROSAMINO+1+3+PYRIDYL+1+BUTANONE Search 4+METHYLNITROSAMINO+1+3+PYRIDYL+1+BUTANONE

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 N NITROSONORNICOTINE 151 81% 11% 92
2 N NITROSAMINES 78 36% 22% 176
3 TOBACCO SPECIFIC NITROSAMINES 65 42% 15% 119
4 DIETARY MYOSMINE 37 100% 2% 14
5 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANONE 33 31% 11% 89
6 4 METHYLNITROSAMINO 1 3 PYRIDYL 1 BUTANONE NNK 32 42% 7% 58
7 CHEMICALLY ACTIVATED FORM 30 84% 2% 16
8 LUNG CARCINOGEN 29 50% 5% 42
9 PYRIDYLOXOBUTYL DNA ADDUCTS 23 100% 1% 10
10 CHEMICAL CARCINOGENESIS 21 13% 19% 155

Journals

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
Biochemistry, biology, and carcinogenicity of tobacco-specific N-nitrosamines 1998 519 390 54%
Progress and challenges in selected areas of tobacco carcinogenesis 2008 98 107 37%
Assessing secondhand smoke using biological markers 2013 26 80 21%
Tobacco carcinogens, their biomarkers and tobacco-induced cancer 2003 510 104 28%
TOBACCO-SPECIFIC N-NITROSAMINES AND ARECA-DERIVED N-NITROSAMINES - CHEMISTRY, BIOCHEMISTRY, CARCINOGENICITY, AND RELEVANCE TO HUMANS 1994 191 135 58%
Urinary Tobacco Smoke-Constituent Biomarkers for Assessing Risk of Lung Cancer 2014 4 38 50%
THE RELEVANCE OF TOBACCO-SPECIFIC NITROSAMINES TO HUMAN CANCER 1989 193 54 63%
Cytochrome p450 enzymes as catalysts of metabolism of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, a tobacco specific carcinogen 2005 74 88 42%
A review of the analysis of tobacco-specific nitrosamines in biological matrices 2010 14 125 57%
Tobacco smoke carcinogens and lung cancer 1999 959 193 11%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ.
in class
1 SICHUAN TECH 3 100% 0.4% 3
2 CANC ETIOL CHEMOPREVENT 3 35% 0.9% 7
3 IND ECOL CHEM 3 50% 0.5% 4
4 HARMFUL COMPONENTS TAR REDUCT CIGARETTE 3 60% 0.4% 3
5 WALTHER STRAUB 2 33% 0.6% 5
6 CIGARETTE SMOKE 2 26% 0.7% 6
7 CHUANYU BRANCH 2 43% 0.4% 3
8 MICRO RUMENTAT ANALYT CHEM 1 50% 0.2% 2
9 QUAL SUPERVIS TEST STN 1 100% 0.2% 2
10 MED EXPT ANAL 1 25% 0.4% 3

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000206878 SMOKELESS TOBACCO//SNUS//SNUFF
2 0.0000157694 CYP2A6//CYP2A5//CYP2A13
3 0.0000153863 OLFACTORY MUCOSA//BOWMANS GLANDS//BETA BETA IMINODIPROPIONITRILE IDPN
4 0.0000132178 SMOKE CHEMISTRY//BEITRAGE ZUR TABAKFORSCHUNG INTERNATIONAL//WHOLE SMOKE
5 0.0000127120 N NITROSODIALKYLAMINE//N NITROSODIETHANOLAMINE//N NITROSO N METHYLANILINE
6 0.0000120258 COTININE//TRANS 3 HYDROXYCOTININE//NORCOTININE
7 0.0000115389 EHCSS//HPHC//MOUTH LEVEL EXPOSURE
8 0.0000109204 PUTRESCINE N METHYLTRANSFERASE//N METHYLPUTRESCINE//METHYLPUTRESCINE OXIDASE
9 0.0000085057 SULFORAPHANE//PHENETHYL ISOTHIOCYANATE//ISOTHIOCYANATES
10 0.0000084814 4 AMINOBIPHENYL//MBOCA//HAEMOGLOBIN ADDUCTS