glauca,including diameter and height structure and survival curve,showed that the population was plenty of seedlings with high mortality,which means early decrease and later stability.
通过取样调查,对桂林岩溶石山青冈栎种群进行统计,绘制了其种群径级与高度级结构图和存活曲线,分析种群的结构特征。
The results showed that: ① The average age of Sabina pingii was relatively old;it is about 277 years old;②The survival curve of the population was between the type of Deevey-Ⅲ and the type of Deevey-Ⅱ,the mortality rate displayed similar change dyn.
编制了静态生命表;绘制了存活曲线、死亡率曲线和消失率曲线;并探讨了垂枝香柏的更新。
In this paper, age structure, the relationship between the age and the stem diameter of Cinnamomum burmannii populaion were studiedl survival curve and age structure pictures were given.
研究了阴香(Cinnamomum burmannii)种群的年龄结构及其年龄与胸径的关系,绘制了阴香种群的存活曲线和年龄结构图。
The surviving curve of the antibiotic-producers caused by ion beam implantation was studied.
0× 1 0 1 6ions/cm2 的N+离子注入庆大霉素产生菌成熟孢子后 ,作出菌种的存活率曲线 ,为典型的“马鞍型”剂量 -效应曲线 。
[Methods] Exponential curve was employed in studying time series of typhoid and paratyphoid(1997-2003) and incidence rate of year 2004 was predicted based on the prediction model.
[方法]对伤寒、副伤寒发病率时间序列(1997~2003)采用指数曲线拟合,并对2004年伤寒、副伤寒疫情作出预测。
Based on the data feature of oversea tourist in Jiangsu province from 1998 to 2005,three forecast models are adopted separately,namely the back-propagation neural network model,the GM(1,1) model and the exponential curve model.
本文根据1998年~2005年江苏省入境旅游客源数据特征,采用BP神经网络模型、GM(1,1)模型以及指数曲线模型分别进行预测,然后结合这三种预测方法的特点,提出非负权重组合预测模型,通过实例运算的对比分析,证明组合预测模型具有很高的准确性。
Study on the Life Chart and Suvival Curve of the Eggs of Ficedula zanthopygia;
白眉姬鹟卵生命表及存活曲线的研究
Static Life Table and Survival Curve of Dominant Populations of Tianma Mountain in Xinyi;
信宜天马山优势种群的静态生命表及存活曲线
Static Life Stable and the Survival Curve of the Montane Elfin Forest in Shimentai Nature Reserve in Guangdong;
石门台山顶矮林的静态生命表及存活曲线
Irrationality of X-ray Survival Curve Founded in Scholz-Kraft's Local Effect Model
对Scholz-Kraft局部效应模型中X线存活曲线模型的不合理性分析
It is essential in radiobiology to fit a survival-radiation dose curvefrom experimental data, which was usually done on a computer by the least squaremethod.
根据实验数据来拟合存活率——辐射剂量曲线是放射生物学的基础工作之一。
This paper discusses generation cost curves, unit price curves and incremental cost curves, and points out that there might be declining segments in thermal-power unit price curve.
讨论了发电成本曲线、价曲线和成本微增率曲线，指出火电成本单价曲线存在下降段。
Explain the main features of a simple stock time curve graph.
说明简单库存时间曲线图的主要特征。
Is There J-Curve Effect under the pressure of RMB Appreciation;
人民币升值压力下存在J曲线效应吗
The Existence Test on Environmental Kuznets Curve of China;
我国环境库兹涅茨曲线的存在性检验
The Existence of Plane of a Circular Section of the Second Order Surface;
与二次曲面有交线圆的平面的存在性
The Development of the Detecting Instrument of Piston Ring s Characteristic Pressure Curve;
活塞环压力特性曲线检测仪器的研制
Study of Environmental Kuznets Curve Based on Pollutants from Daily Living
基于生活污染物的环境库兹涅茨曲线
Improving of the Measurement Method of the Natural Activity Curve of Lysozyme
溶菌酶标准酶活曲线测定方法的改进
Dispersion signal test must insure the signal curve is normal; they should be printed and filed.
（2）光纤后向散射信号曲线测试，必须保证信号曲线无异常；全程信号曲线应打印存档。
Study on Weibull model applied in fitting non-linear inactivation curve of bacteria
Weibull模型拟合细菌非线性失活曲线的应用研究
Apparent Activation Energy for TiO_2 Ceramics Determined by the Master Sintering Curve and Arrhenius Plot
利用主烧结曲线和Arrhenius曲线确定TiO_2陶瓷表观激活能
The effect of octreotid on cells expression of survivin in human gastric cell strain
奥曲肽对胃癌细胞株中存活素表达的抑制作用
The Existence of Solutions of Initial-boundary Problems for a Semilinear Hyperbolic Systems;
一类半线性双曲方程组初边值问题解的存在性