Journal of Natural Science of Heilongjiang University 2003 Issue 2 Improvement on industrial extraction process of heme

Improvement on industrial extraction process of heme
zhang yan long ; han de quan ; zhou dong po

..............page:121-122,126

Breeding of a Rhizopus chinesis producing a fibrinolytic enzyme
liu xiao lan ; ling hong bo ; du lian xiang ; zhang chun lei

..............page:123-126

Study on activated clay prepared by Baiquan bentonite
wang gui ling ; zhao jing gui ; zhao jie ; sun peng

..............page:117-120

Linear operators preserving rank-partial orderings on symmetry matrix algebra
guo ling ; tang xiao min

..............page:35-37

Linear operators in preserving group inverses of matrices
hao li li ; cao zhong guang

..............page:32-34

Positive almost periodic solution of the predator-prey system with undercrowding effect
zhang wei peng ; wang ke

..............page:28-31

Wavelet-multilevel-regularization method for the parameter estimation problems of partial differential equation
fu hong sun ; han bo

..............page:26-27

Two - stage and three- stage continuous Runge- Kutta- Nystrom method of orders two and three
zou jin ying ; ding xiao hua ; liu ming zhu

..............page:22-25

Hopf bifurcation in numerical approximation for sunflower equation using delay as parameter
zhang chun rui ; liu ming zhu ; zheng bao dong

..............page:19-21,25

Stability analysis of θ-methods for neutral functional-differential equations
song ming hui ; liu ming zhu

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

Mental labor mechanization and mathematics mechanization in computer era
wu wen jun

..............page:1-9

A conjecture concerning the exponential Diophantine equation ax +by=cz
le mao hua

..............page:10-14

Synthesis of the 1 - methoxy - 2 - propanone
ma dong sheng ; sun zhi zhong ; xu miao miao ; sun hong tu

..............page:114-116

Study on the degree of mixedness in mixing of solid materials
xie gang ; li xia ; tian guo hui ; zuo fu xue

..............page:111-113

The effect of La2O3 and gelatinization aid on the thermostability of active Al2O3
zhang guo ; li li ; zhang xin ; yuan fu long ; guang huan zhu ; fu hong gang

..............page:106-110

A comparative composition analysis of microbial degradation of crude oil of Daqing oil fields
wu xiao lin ; hao wen hui ; hou yan jun ; ma dong sheng ; lun shi yi

..............page:100-105

Studies of synthesis technics based on polyurethane/poly (ethyl methacrylate) IPN curing at room temperature
qin chuan li ; zhang ju sheng ; tang dong yan ; cai wei min

..............page:96-99

Preparation of all-starch thermoplastics
zhang zhen yu ; li li ping ; sun li guo ; wu yan li

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

Preparation and characterization of heater-type o-dimethylbenzene Sensitive ceramic element with TiO2/MoO3 complex thick film
wang zhi min ; zhang xin ; zhang yan zuo ; han wei ping

..............page:89-92

The utilization of pressure sensor for hydraulic control in water processing facilities
qu wei ; qiu cheng jun ; yu xin

..............page:86-88

Green upconversion luminescence of Er3+ Co-doped Fluoride-oxide host
song guo li ; lin wei qiu ; liang hong ; sun kai xia ; yang you tong

..............page:82-85,88

An application of Tchebyshev polynomials recursive analysis method on metrical data processing
shi li ping ; sun bao yuan ; yu hao yang

..............page:78-81

Data sampling and measuring system of material- testing machine
fang wei lin ; sun xiao jun

..............page:75-77

The label-fixing application of the railway trunk label-fixing network manager
chen tao ; liu feng ; zou ya dong ; hong hai

..............page:71-74

The design and realization of a database system for management of goods and materials based on the optimum relation
lu hui lin ; zhu yu ; wu yan ping ; song min hui

..............page:69-70,74

Design of power billing database system based on data warehouse
wu yi

..............page:66-68

Research on large texture real-time interaction by clipping texture
han hui jian ; zhang cai ming

..............page:62-65

Short-term load forecasting using Ann based on similar historical day data
zhang ying ; zhang rui ; gao zhong wen

..............page:59-61,65

Two-stage least squares method of parameter estimation for multivariable moving average models
du hong yue ; deng zi li

..............page:55-58

Behavior finance and a model of investor sentiment
liu xing hua ; liang xiao zuo ; tang bing yong

..............page:48-54

New design of the cutting edge on the arc revolving cutters with toroidal shape
tang yu yong ; bao qing shan ; wang yun tao

..............page:45-47

Preferred hedging pricing of contingent clasims and asset optimization under transaction costs
xu shi meng ; zhang yu zhong

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

The lifting of general (T-) derivations on Hochschild (T-) cohomology
xia zhang sheng ; tan zhi song

..............page:38-40