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Journal of Hebei North University(Natural Science Edition)
1673-1492
2008 Issue 6
New Method of Finding Special Solution of a Kind of Ordinary Differential Equations
GONG Dong-shan;LIU Yue-wei;JIA Xiao-jing
..............page:1-3
Two Notes about Even Perfect Numbers
ZHANG Si-bao;LUO Xia
..............page:4-5
Application of Infinitesimal in Limit and Positive Series
LING Shou-quan
..............page:12-14
Improve Performance of LC Oscillator with Negative-resistor
HAN Bing;LI Ju-you;ZHAO Dan
..............page:15-17
Dimensional Analysis of Terminal Velocity on Raindrops Landing
WANG Jian-guo;HUANG Hai-yan;XU Li-jun
..............page:18-20
Study on Total Antioxidant Capacity of Water Extract from Radix paeoniae alba in Bozhou
CHEN Chan;TIAN Yuan;ZHANG Na;WANG Zhi-bao;GUO Chun-yan
..............page:21-22,35
zhi wu kang han ji yin gong cheng de yan jiu jin zhan
ge shui lian ; xue jing jing ; chen jian zhong
..............page:28-31
Study of Relationship between Temperature,Humidity and Bovine Mastitis Morbidity
MU Xiu-ming;LI Cun-xin;MA Xu-ping;LI Dong
..............page:36-38
Study on Comparative Experiment of Pellicle Melon Varieties in Open Field
HUANG Wei;WANG Xin-yue;LIU Rui-hua
..............page:39-41
Study on Comparative Experiment of Hardy Tomato Varieties
GAO Hua-shan
..............page:42-44
Plant Regeneration Induced from Calli of Explants of Kyoho Grapevine
FENG Sha-sha;LIU Shou-yi
..............page:45-48
Pragmatic Programming of WSH Technology
HU Shi-feng;WANG Zhi-min
..............page:49-50,55
Research on Problem of Airport Ground Services Scheduling
ZHENG Jie;GAO Jian-ming
..............page:60-62
Study on Mathematical Models during Rising and Falling of Stocks
CHANG Xiu-fang;LI Gao
..............page:63-65,69
Elderly Residential Buildings in Portal Space Landscape Research
ZHANG Wei;TANG Wen
..............page:66-69