..............page:147-148,151
..............page:152-156
..............page:159,157
..............page:59-61,85
The research on teaching of graph theory
liu guang-jun1; 2; liu xin-sheng1; chen xiang-en1(1.mathe and information institute; northwest normal university; lanzhou 730070; china; 2.department of mathematics; zhoukou normal university; zhoukou 466001; china)
..............page:46-48
A new autonomous chaotic system
cui jun-feng1; 2; lu ya-peng2(1.department of mathematics; longnan teachers college; longnan 742500; china; 2.school of mathematics; physics and software engineer; lanzhou jiaotong university; lanzhou 730070; china)
..............page:30-32
..............page:33-34,56
..............page:136-139
..............page:149-151
..............page:5-6,26
..............page:140-142
..............page:143-146
..............page:116-119
..............page:76-79,82
..............page:133-135
..............page:120-122
..............page:112-115
..............page:109-111
..............page:98-101
..............page:57-58,67
Study on the quantity analysis to Shennongmycin Ⅱ
pei chao-yu1; fang guo-bo2; xie hong3; yang xiu1; lin kai-chun*; 2(1.department of chemistry; zhoukou normal university; zhoukou 466000; 2.wuhan nature s favour bio-engineering co.; ltd; wuhan 430070; 3.the environment supervision station of zhoukou; zhoukou 466000; china)
..............page:71-72,75
..............page:102-106
..............page:130-132
..............page:123-126
..............page:107-108,115
..............page:127-129
..............page:92-95,106
..............page:86-88,91