주제어 |
Biogenic source
|
1
|
1
|
|
Hopanes
|
1
|
1
|
|
SCAPE2
|
1
|
1
|
|
carbonpreferenceindex
|
1
|
1
|
|
cis-Pinonic acid
|
1
|
1
|
|
n-Alkanoic acids
|
1
|
1
|
|
the plant wax alkane (waxcn)
|
1
|
1
|
|
Bituminous coal
|
2
|
1
|
|
Carbonaceous aerosols
|
2
|
1
|
|
Pinic acid
|
2
|
1
|
|
dicarboxylicacids
|
2
|
1
|
|
n-alkanes
|
2
|
1
|
|
refugees(遺民)
|
3
|
1
|
|
Coal combustion
|
4
|
1
|
|
water-soluble organic carbon
|
4
|
1
|
|
levoglucosan
|
6
|
1
|
|
n-Alkanes
|
6
|
1
|
|
tomb epitaphs
|
8
|
1
|
|
oc
|
20
|
1
|
|
seasonal variation
|
45
|
1
|
|
ec
|
63
|
1
|
|
water content
|
63
|
1
|
|
pahs
|
102
|
1
|
|
SUB
|
124
|
1
|
|
pm
|
143
|
1
|
|
pm 10
|
190
|
1
|
|
principal component analysis
|
210
|
1
|
|
seoul
|
486
|
1
|
|
계 |
|
1,494 |
28 |
|
* 주제로 분류 되지 않은 논문건수 |
|
0 |
|