Journal of Northwest Normal University(Natural Science) 2003 Issue 2 Progress in the synthetic methods of 2,5-disubstituted 1,3,4-oxadiazoles

Progress in the synthetic methods of 2,5-disubstituted 1,3,4-oxadiazoles
wang xi cun ; quan zheng jun ; li zheng

..............page:108-113

Current status of detecting damaged DNA in single cell by comet assay
liu guo an ; zheng rong liang

..............page:114-117

jian xun

..............page:封二-封二

Investigation on enforcement of the standard for the national physical exercise in callisthenics teaching in colleges
mi yan

..............page:105-107

The cognition and method of improving experimental teaching qualities
wang xiu chun ; yang ning ; song zhan wu

..............page:102-104

Psychological mechanism analysis of Polya's chart of how to solve problem and its enlightenments
li bao zhen ; liu kai feng

..............page:99-101

Research on the relation between athletes's mental category and psychological cultivation
zuo shu qing

..............page:96-98

Study on the relationship between special fitness and performance for elite female long-jump athlete--Exampled by the Chinese elite athlete Guan Ying-nan
yang li juan

..............page:93-95

On the targets of courses of physical education and health in colleges
hao zhao ; zhang zheng hong

..............page:90-92

The value of physical culture in all-round development of human being
zhang xue zhong

..............page:87-89

The introduction of multipliers and its application--A case of Zhangye Prefecture
chen dong jing ; xu zhong min

..............page:83-86

An analysis of the grey conjunction on the development difference in Chinese countryside regional economic
zhang run jun ; li zong zhi

..............page:80-82,95

The development model of theme park guided by resource and culture
xiao xing ; zhang xian hong

..............page:76-79

The pilot study of benefit and protection on wetland nature protecting region of three gorge of Yellow River
gong da jie ; jin kong ke ; liu zhi gang ; zhu min

..............page:71-75

Analysis of the diversity of the spermatophytic in Kongtong Mountain of Gansu Province
wu xiao ju ; wang hong yu ; cao zuo ; chen xue lin

..............page:66-70

Chromosome aberration in the course of subculture of Liliun davidii var.Unicolor(hong)cotton
du jie ; wang gang ; xing heng tai ; li xue ; chen li mei

..............page:61-65

The calculation of quantum chemistry on indole-3-acetic acid(IAA),indole-3-batyric acid(IBA)and phenanthroline
song zhi gang ; zhuang shan xue

..............page:58-60

Studies on the constituents from the seeds of M.sikkimensis H.
zheng shang zhen ; yang hong peng ; meng jun cai ; ma xue mei ; shen xu wei

..............page:54-57

GC-MS analysis of chemical component of Oxytropis falcate Bunge extracted by petroleum ether
zheng shang zhen ; que sheng ; xu xian fang ; shen xu wei

..............page:51-53

Kinetic determination of trace amount of resorcinol by B-Z oscillating chemical reaction
lv dong zuo ; gao jin zhang ; yang wu ; ren jie

..............page:48-50

Catalytic behavior of TiO2 nanophotocatalysts
su bi tao ; xu xian fang ; yan jun ; liu xiu hui ; zheng jian

..............page:45-47，57

Stability of the nonlinear dust acoustic waves in dusty plasmas which including two kinds of ions with different temperature
lin mai mai ; duan wen shan ; wang chong ling ; li feng de

..............page:41-44

The properties of the equal-power N-Y minimum uncertainty state of asymmetric multimode superposition state light field
xu min ; han xiao wei

..............page:37-40

The complex structures in a conservative pendulum system
lang he

..............page:33-36

Backlund transformations and exact solutions of the KP equation
shi yu ren ; lv ke zuo ; duan wen shan ; hong xue ren ; yang hong juan ; zhao jin bao

..............page:30-32

Digital image scrambling based on the baker's transformation
zhao xue feng

..............page:26-29

Mathematical model of educational software evaluation
xiao hong min

..............page:24-25，44

A sufficient condition that the skew polynomial ring R[x,σ] over R is p.q-Baer ring
song xue mei ; wang xiao lin

..............page:21-23

On π-regular rings and GP-injective rings
zhao ren yu

..............page:19-20

The fractional chromatic number of a kind of 4-regular cyclic graphs
zuo jing zhi ; sun yi rong

..............page:15-18

Applications of neural network based on disorthogonal and affine and discrete wavelet transforms
hu gang ; zhang ying lin

..............page:11-14

Positive solutions of superlinear second-order m-point boundary value problem
ma qiao zhen

..............page:1-3

The existence of positive periodic solutions of nonlinear second order ordinary differential equations
zhang ling zhong

..............page:4-7

Permanence for asymptotically periodic Lotka-Volterra cooperating systems
zhang zuo

..............page:8-10，18