Journal of Beijing Normal University(Natural Science) 2001 Issue 2 ON THE THEOREM OF TURNING TANGENTS OF SIMPLE CLOSED CURVES

ON THE THEOREM OF TURNING TANGENTS OF SIMPLE CLOSED CURVES
Wang Youning;WANG Yusheng;Liu Jizhi

..............page:153-156

THE COMPACTNESS OF A KIND OF SPECIAL FOREST
Zhang Xiuping

..............page:147-152

ON VARIATION IN BIRTH-DEATH PROCESSES
Zhang Yuhui

..............page:143-146

FACTORIZATION OF NONNEGATIVELY EXTENDABLE BLOCK HANKEL MATRICES
Hu Yongjian

..............page:157-161

A THEOREM OF RICCI FLOW OF METRIC ON RIEMANNIAN MANIFOLD
Xuan Manyou;Liu Jizhi;Cai Kairen

..............page:162-165

THE FUNCTION OF CD45 IN T CELL ACTIVATION
Zhang Wei;Deng Youjin;Qi Anshen

..............page:166-169 166-169

BAND-GAP BLUE SHIFT BY ION IMPLANTATION IN InGaAs/InGaAsP QUANTUM-WELL LASER-STRUCTURE
Liu Chao;Li Guohui;Han Dejun;Ji Chengzhou;Chen Yonghai;YE Xiaoling

..............page:170-173

X-RAY PHOTOELECTRON SPECTROSCOPY STUDIES ON ZnO/Si GROWN BY O+-ASSISTED PLD
li geng wei ; wu zheng long ; yang xi zhen ; yang shao yan ; zhang jian hui ; liu zhi kai

..............page:174-179

A STUDY ON THE PROPERTY OF Ge FILMS ON GaAs
Yang Ru;Ren Yongling;Li Guohui;Yan Fengzhang;Zhu Hongqing

..............page:180-182

ANALYSIS OF NANO-METER STRUCTURE IN Ti IMPLANTED POLYMERS
ZHOU Gu;Wu Yuguang;Zhang Tonghe;Zhao Xinrong

..............page:183-186

EFFECTS OF FILTER DUCT MAGNETIC FIELD ON ARC DISCHARGE AND PLASMA TRANSPORTATION IN A MODIFIED VACUUM ARC DEPOSITION APPARATUS
wang guang fu ; zhang zuo xing

..............page:187-190

A STUDY ON SILICON ETCHING AT LOW RATE AND TUNGSTEN FILM ETCHING
Du Shucheng;Liu Chao;Ji Chengzhou;Li Guohui

..............page:191-194

A THEORETICAL STUDY ON TERTIARY IMMUNE RESPONSE
Mao Likai;Qi Anshen

..............page:195-198

A STUDY ON THE SAND COLUMN EXPERIMENTS OF NITROGEN POLLUTION AND TRANSFORMATIONIN AGRICULTURAL AREAS
DONG Yuean;Shen Zhaoli;Zhong Zuoshen

..............page:199-204

GROWTH AND ANALYSIS OF CdSSe QUANTUM DOTS IN A GLASS MATRIX
Tian Qiang;Wu Changshu;LI Yongsheng;Luo Ying;Song Jinfan

..............page:205-207

THE VIRTUAL SYSTEM OF DIGITAL SIGNAL BASED ON WEB
Zhao Xiaojie;Zhang Jiacai;Ye Qing;Yao Li;Xie Yonggui

..............page:208-212

A PIXE METHOD FOR ANALYZING THE STANDARD SAMPLES OF PARTICULATES
WANG Xinfu;ZHU Guanghua

..............page:213-216

QUANTITATIVE ANALYSIS OF THE MAIN COMPONENTS IN CHINESE MEDICINE BY GC
Liu Yuan;Xie Mengxia;Chen Shizhong

..............page:217-220

THE SYNTHESIS AND PROPERTY STUDY OF THE COATED BISMUTH VANADATE PIGMENT
Wang Fan;YANG Linglu;Zhang Gailian;Ma Hui

..............page:221-224

SYNTHESIS AND PHOTOPHYSICAL PROPERTY OF EUROPIUM TERNARY COMPLEX- Eu(CPOA)3*PHEN
Wang Mingzhao;Wang Shuxian;Cai Guanliang

..............page:225-229

PREPARATION AND BIODISTRIBUTION OF 99mTcN-GLA
Zhang Junbo;Wang Xuebin;YU Kai

..............page:230-232

SINGLE SWEEP OSCILLOPOLAROGRAPHY OFRUFLOXACIN HYDROCHLORIDE
Gao Hongyan;Zeng Yonghuai;Cao Erxin

..............page:233-236

ADSORPTIVE VOLTAMMETRIC BEHAVIOR OF LOMEFLOXACIN AND ITS APPLICATION
Cao Erxin;Zeng Yonghuai;Gao Hongyan

..............page:237-241

A PRELIMINARY STUDY ON A NEW COMPLEX99mTc(Ⅰ)(NO)-TEROFOSMIN
Lu Jie;Wang Xuebin;Lü Gongxu

..............page:242-245

THE CHANGES OF GENOME DNA METHYLATION OF KIDNEYAND PANCREAS FROM DIABETIC RAT
Wang Ping;Yan Fang;He Zhongxiao;Ni Qing;Liu Ximing;Lin Lan

..............page:246-249

THE CONSTRUCTION OF DEHYDRIN EXPRESSION VECTOR pBV221-dhn1 AND ITS GENE EXPRESSION
ZHANG Yongwei;Qiu Quansheng

..............page:250-254

COMMUNITY STRUCTURE AND ITS YEARLY CHANGES OF THE SMALL RODENTS AT XIAOLONGMEN FOREST FARM IN BEIJING
Song Jie;Bi Zhonglin;Zhang Zhengwang;Pan Chao;Guo Dongsheng;Zhang Yanyun

..............page:255-259

AN EXPERIMENTAL STUDY ON AGRICULTURAL UTILIZATION OF SHALE OIL INDUSTRIAL SOLID WASTE
Jing Hongwei;Liu Hong;Zhang Ping;Xu Jialin

..............page:260-265

THEORIES AND METHODS OF TERRESTRIAL PARAMETER EXTRACTION FROM REMOTE SENSING
Tang Shihao;Zhu Qijiang;Yan Guangjian

..............page:266-273

THE ESTABLISHMENT AND APPLICATION OF URBANIZATION TYPE INDEX BASED ON THE NSCT’S LARGE CITY
Xu Xia;Wang Jing'ai;YU Yongtao;YU Yuanyuan

..............page:274-279

HOLOCENE PALEOFLOODS IN THE NORTH CHINA PLAIN
Yin Chunmin;Qiu Weili;Li Rongquan

..............page:280-284