Journal of Lanzhou University（Natural Sciences） 2007 Issue 1 An algorithm of attribute frequency reduction based on discernibility matrix

An algorithm of attribute frequency reduction based on discernibility matrix
REN Xiao-kang;WU Shang-zhi;MA Ru-yun

..............page:138-140

Some constacyclic codes of length 2e over Z2k+1
QIAN Jian-fa;ZHU Shi-rin

..............page:135-137

Minimizing the makespan in the no-wait flexible flowshop problem with availability constraint
WANG Hai-ming;LIU Ji-hong;WANG Qing-lei

..............page:130-134

Multiple positive solutions to singular boundary value problems of a class of second order three-point differential equations
SHEN Wen-guo

..............page:126-129

Multiplicity of periodic and subharmonic solutions to second order nonhomogeneous nonlinear difference equations and systems
ZHANG Hui-ling

..............page:119-125

Generalized Hermite approximations for spectral methods
ZHA Ting-gang

..............page:116-118

Preparation of nano-crystalline Si arrays by plasma enhanced CVD using porous alumina templates
HU Hai-long;PENG Shang-long;TANG Ze-guo;QI Jing;HE De-yan

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

Preisach simulation on magnetic properties of Fe nanowire array
LI Shi-liang;WANG Jian-bo;LIU Qing-fang;LI Fa-shen

..............page:92-95

An analysis of finite element model on nuclide migration in single fracture rock
SONG Yan-li;LI Qian-ming

..............page:89-91

Characteristics of grassland and ecological change of vegetations in Baiyin Region of Gansu Province
LIU Min-xia

..............page:84-88

Microbial biomass in soil during secondary forest succession in Ziwuling, Northwest China
JIA Guo-mei;WANG Chun-yan;CAO Jing;WANG Gang

..............page:80-83

A study on the coupling relation and evolvement of the population-resources-environment in Qinghai Province
XUE Bing;CHEN Xing-peng;WU Jun hui;CHENG Qiu-mei

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

Modeling on groundwater contamination by oil from pipeline seepage and breakage
WANG Li;ZHANG Bao-jun;QU Qun;LU Ran-ying;TIAN Liang

..............page:29-32

Analysis of the top soil pollution of Cu,Zn,Pb in the different city zones of Lanzhou
ZENG Jing-jing;YANG Su-cai;XU Wen-qing;WANG Sheng-li;NAN Zhong-ren

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

Experimental study on microstructure of lightweight EPS-bead-treated soil mechanical behavior
JI Feng-ling;L(U) Qing-feng;MA Dian-guang

..............page:19-23

Investigation into the hydrocarbon generation kinetics of tertiary source rocks from the west of Qaidam Basin
LEI Tian-zhu;JIN Ming;ZHANG Rui;QIU Jun-li;XIA Yan-qing

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

Critical sliding forecast for loess-rock landslide at Wenchangge, Lanzhou
ZHOU Zi-qiang;LI Bao-xiong;WANG Zhi-rong

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

The impact of human activities on the chemical properties of paleosol in Mengjin, Henan Province during civilization
DONG Guang-hui;XIA Zheng-kai;LIU De-cheng;WU Qing-long;WANG Zhen-tin

..............page:6-10

Trace element geochemistry and plutonic process of peridotite and pyroxenite in the Beishan, Tarium Area
FAN Yu-xin;MA Jin-long;BAI Yun-lan

..............page:1-5

On the adjacent vertex-distinguishing edge chromatic number of Wm ∨ Wn
LIU Jun;ZHAO Chuan-cheng;REN Zhi-guo;ZHANG Zhong-fu;BAO Zhi-tang

..............page:113-115

Some new characterizations of right cancellative monoids by condition(Wp)
QIAO Hu-sheng;WANG Li-min

..............page:108-112

Synthesis of high dispersed Fe3O4 ferrofluids
ZHANG Jian-hui;XU Xue-fei;SI Ming-Su;XUE De-sheng

..............page:103-107

Measurement of cross sections for 172Yb(n,p)172Tm,173Yb(n,p)173Tm,170Yb(n,2n)169Yb and 176Yb(n,2n)175Yb reactions induced by 14.8 MeV neutron
LUO Jun-hua;KONG Xiang-zhong;SUN Gui-hua

..............page:99-102

Improvement of the ecological capacity model and its application
ZHANG Yan-yu;HAN Xiao-zhuo;LI Zi-zhen;Su Min

..............page:75-79

Effect of NaCl on protein in two cultivar leaves
YANG Ying-li;XU Shi-jian;BAO Ying;AN Li-zhe

..............page:70-74

The study of oxalic acid and the biosynthesis and resistance of β-ODAP in grass pea(Lathyrus sativus L.)
ZHANG Da-wei;XING Geng-mei;YAN Ze-yi;WANG Chong-ying;LI Zhi-xiao;WANG Ya-fu

..............page:63-69

The role of nitrogen in compensatory growth of shrub, Caragana korshinskii Kom., following different clipping treatments
FANG Xiang-wen;JIA Guo-mei;XU Dang-hui;WANG Gang

..............page:58-62

Effects of Pb2+on inter-specific competition of Microcystis aeruginosa and Chlamydomonas reinhaidtii
GAO Le-xuan;ZHAO Zhi-guang;CONG Zhi-yuan;ZHANG Bo;LIU Sheng;XU Zhi-yong

..............page:52-57

The evolutionary implication of niche construction and its ecological or behavioral responses
HAN Xiao-zhuo;ZHANG Yan-yu;LI Zi-zhen

..............page:46-51

Detection and identification of grains of sand average size based on computer images
ZHA Yu-feng;ZHOU You-he

..............page:41-45

Sand-fixing materials of LZU series and integration sand-fixation technology
WEI Xiu-cheng;ZHAO Zheng-hua;CHEN Wen-wu;LI Pei-xun

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