Preparation and multiferroic properties of Zr doped BiFeO₃ ceramics
LI Chen-yang~1;WU Chun-fang~1;WEI Jie~2 1.School of Physical Science and Technology;Lanzhou University;Lanzhou 730000;China 2.School of Electronic and Information Engineering;Xi’an Jiaotong University;Xi’an 710049;China

..............page:107-111

Gas accumulation history in upper palaeozoic,east of Erdos basin
LI Yan-xia;ZHAO Jing-zhou;LI Jing-hong School of Petroleum Resources;Xi’an Shiyou University;Xi’an 710065;China

..............page:29-34,39

Variance in two computing methods of roughness length in the Hexi area
ZHANG Wen-yu;LIU Xin;ZHANG Yu;ZUO Hong-chao;HAN Ting-ting Key Laboratory of Arid Climatic Change and Disaster Reduction of Gansu Province;School of Atmospheric Sciences;Lanzhou University;Lanzhou 730000;China

..............page:40-43

Study on the 2-stereoisomers of epipodophyllotoxin ester by EI and ESI~n mass spectrometry
ZHANG Jia-qiang;TIAN Xuan State Key Laboratory of Applied Organic Chemistry;Lanzhou University;Lanzhou 730000;China

..............page:117-121

Analyses and example application of spatial data for landslide inventory
HU Yuan-xin~1;LIU Xin-rong~1;LUO Jian-hua~2;GE Hua~3 1.College of Civil Engineering;Chongqing University;Chongqing 400045;China; 2.Nanjiang Hydrogeology & Engineering Geology Brigade;Chongqing 401121;China 3.Chengdu Center of Geological Survey;Chengdu 610081;China

..............page:9-17

Comparative study of scenario generation methods in portfolio optimization
WANG Zhen;LIU San-yang;KONG Xiang-yu School of Science;Xidian University;Xi’an 710071;China

..............page:96-100

Single population model with stage structure and density constraints
ZHANG Pei-jun~1;YANG Ying-hui~2 1.Fundamental Department;Xijing University;Xi’an 710123;China 2.School of Mathematics and Statistics;Lanzhou University;Lanzhou 730000;China

..............page:86-89

lan zhou da xue xue bao ( zi ran ke xue ban ) zheng gao jian ze ji tou gao yao qiu

..............page:127

On a generalization of strongly flat covers of cyclic acts
QIAO Hu-sheng;Zhao Mei-mei College of Mathematics and Information Science;Northwest Normal University;Lanzhou 730070;China

..............page:68-70

Non-constant positive steady state of a diffusive food-chain model with disease in the prey
WU Jian-chun Jiuquan Vocational and Technical College;Jiuquan 735000;Gansu;China

..............page:90-95

Community compensatory mechanism under clipping,fertilizing and watering treatment in alpine meadow
ZHOU Xiao-song~1;ZHU Zhi-hong~1;LI Ying-nian~2;YUAN Fu-rong~1;FAN Rui-jian~1 1.College of Life Sciences;Shaanxi Normal University;Xi’an 710062;China 2.Northwest Institute of Plateau Biology;Chinese Academy of Sciences;Xining 810008;China

..............page:50-57

Perceptual winding DC-resistance measurement method and the ARM technology application and research
LI Zong-yi~1;JIANG Yi-long~1;WANG Ze-yin~1;MA Yue-zhou~2 1.Gansu Institute of Mechanical & Electrical Engineering;Tianshui 741001;Gansu;China 2.School of Materials Science and Engineering;Lanzhou University of Technology;Lanzhou 730050;China

..............page:122-126

Expression,purification and bioactivity analysis of Saccharomyces cerevisiae metallothionein
LIANG Xiao-feng;GONG Ying-xue;XIAO Wen-juan;HU Jia;ZHENG Yang-yang; ZHANG Xiao-hong;WANG Jun-mei;LIU Ze-huan Research Center for Molecular Biology;Institutes of Life and Health Engineering;Jinan University; Guangzhou 510632;China

..............page:58-62,67

Fuzzy possibilistic reliability analysis method for block rock mass stability
LI Ji-ming~1;ZHANG Yong-jie~2 1.Yiwu Vocational College of Commerce and Industry;Yiwu 322000;Zhejiang;China 2.School of Civil Engineering and Architecture;Changsha University of Science and Technology; Changsha 410004;China

..............page:18-23

Simulating snowmelt process by using SRM in different watersheds in the upper reaches of Heihe river basin
WANG Chao~1;ZHAO Chuan-yan~2;FENG Zhao-dong~1 1.School of Resources and Environmental Sciences;Lanzhou University;Lanzhou 730000;China 2.Key Laboratory of Arid and Grassland Ecology with the Ministry of Education;Lanzhou University; Lanzhou 730000;China

..............page:1-8

Variation characteristics of a bulk mode for ferromagnetic bilayers with face-centered cubic
SHI Xiao-xia~1;YUN Guo-hong~;HOU Xiao-juan~4;ZHOU Wen-ping~2 1.Medical Technique Department of Medical College;Inner Mongolia University of Science and Technology; Baotou 014040;Inner Mongolia;China 2.Department of Physics;Inner Mongolia University;Hohhot 010021;China 3.Physics and Electronic Information College;Inner Mongolia Normal University;Hohhot 010022;China 4.School of Mathematics;Physics and Biological Engineering;Inner Mongolia University of Science and Technology;Baotou 014010;Inner Mongolia;China

..............page:112-116

lan zhou da xue xue bao ( zi ran ke xue ban ) di wu jie bian ji wei yuan hui cheng li
wang xi ying wang chun yan zhang yong

..............page:28

Precise large deviations for loss process with negatively dependent and heavy-tailed claims
XIAO Hong-min;MA Hui-juan College of Mathematics and Information Science;Northwest Normal University;Lanzhou 730070;China

..............page:101-106,111

Positive solutions for a class of third order three point nonhomogeneous boundary value problems
HE Xi-ping~1;SUN Hong-rui~2 1.Teaching Guidance Center;Gansu Radio and TV University;Lanzhou 730030;China 2.School of Mathematics and Statistics;Lanzhou University;Lanzhou 730000;China

..............page:81-85

Study on the correction of numerical prediction products
ZHANG Lan-hui;SHANG Ke-zheng;CHENG Yi-fan;WANG Shi-gong Key Laboratory of Arid Climate Change and Disaster Reduction of Gansu Province;School of Atmospheric Sciences;Lanzhou University;Lanzhou 730000;China

..............page:44-49

Tor-self-orthogonal modules of a finite flat dimension
DI Zhen-xing;LIU Zhong-kui College of Mathematics and Information Science;Northwest Normal University;Lanzhou 730070;China

..............page:71-76

Dynamic relationship between China’s economic development and environmental quality
CHEN Xing-peng~1;YANG Mian~1;YANG Fu-xia~2 1.School of Resources and Environmental Sciences;Lanzhou University;Lanzhou 730000;China 2.School of Economics;Lanzhou University;Lanzhou 730000;China

..............page:35-39

Statistical damage softening constitutive model for rock
WANG Jun-bao~;LIU Xin-rong~;LI Peng~ 1.College of Civil Engineering;Chongqing University;Chongqing 400045;China 2.Key Laboratory of New Technology for Construction of Cities in Mountain Area with the Ministry of Education;Chongqing University;Lanzhou 730000;China

..............page:24-28

Adjacent spectral characterization of complete bipartite graphs
YANG Dong~1;WANG Jing-yu~2 1.School of Mathematics and Statistics;Lanzhou University;Lanzhou 730000;China; 2.School of Mathematics;Inner Mongolia University for Nationalities;Tongliao 028000;Inner Mongolia;China

..............page:77-80

Spatial heterogeneity of grasshopper nymphs in natural grass in the upper reaches of Heihe river basin
ZHAO Cheng-zhang;LI Li-li;YIN Cui-qin;ZHANG Jun-xia;SHENG Ya-ping College of Geography and Environment Science;Northwest Normal University;Lanzhou 730070;China

..............page:63-67