,
(
25
50
75
100
125
150
175
200
225
250
)
1
...
30
31
32
33
34
35
36
37
38
39
40
41
42
...
186
-
-
( )
- - -
. . 2018
-, SCIENCEDIRECT SCIENCEINDEX
2
,
( " ")
sol
1
...
30
31
32
33
34
35
36
37
38
39
40
41
42
...
186
