一阶导数

一阶导数荧光光谱鉴别海面溢油，其光谱特征用模糊数学方法作了分析；计算了各种油之间的模糊相似程度；

Identification of spillage oil at sea with first derivative fluorescence spectra was discussed .

根据叶片的前后表面和侧面间拼接时具有共同边界和在边界上一阶导数连续等边界条件，实现两曲面的光滑连接。

Slick merge arithmetic between front or back surface and flank surface was deduced on the basis of boundary conditions including the surface shared the same boundary where the first derivative was continuous .

一阶导数光谱法测定阿维菌素B1的含量

Determination of Avermectin B_1 Content by First-order Derivative Spectrum Analysis

本文建立了维生素C及其制剂的一阶导数差示脉冲极谱定量分析方法。

The first derivative differential pulse polarography was used for the quantitative analysis of Vitamin C and its preparations .

烟草中Fe、Co一阶导数分光光度法同时测定的研究

Simultaneous Determination of Iron and Cobalt in Tobacco by the First-Derivative Spectrophotometric Method

辅酶Q（10）注射液含量测定的一阶导数-吸收度法

First-derivative-absorption spectrometric assay of coenzyme q_ ( 10 ) injection

采用一阶导数紫外吸光光度法在pH≤7时直接同时测定苯酚和对苯二酚。

Phenol and hydroquinone are directly determined at an acidity of pH ≤ 7 by the first derivative UV spectrophotometry .

方法：采用一阶导数紫外光谱法，并与高效液相色谱法（HPLC）进行了比较。

METHODS : The method of first derivative UV spectrum was established and compared with HPLC assay .

PSO算法在含一阶导数变分问题中的应用

Application of PSO in Variational Problem with First-order Differential Coefficient

零交点一阶导数同步荧光法测定苯并（a）芘和苯并（k）荧蒽

Simultaneous Determination of Benzo ( a ) Pyrene and Benzo ( k ) Fluoranthene by First Order Derivative Synchronous Fluorescence & Zero Crossing Method

用双波长、差示、一阶导数分光光度法，建立了一种测定外源物体外代谢时一氧化碳（CO）生成量的新方法。

A double wavelength-differential-first order derivative spectrophotometric assay was established to determine carbon monoxide ( CO ) generation during in vitro metabolism of xenobiotics .

5-Br-PADAP-H2O2一阶导数光度法测定钢铁和铝合金中的钒

First-order derivative spectrophotometric determination of Microamounts of vanadium in iron , steel and aluminium alloy with 5-Br-PADAP and H2O2

在求解N-S方程时，其一阶导数的计算方法和求解Euler方程时一阶导数的计算方法完全相同。

Calculation of first-order derivative is the same with the calculation in solving Euler equations .

以盐酸为溶剂，N乙酰基D葡萄糖胺为标准品，用紫外一阶导数光度法直接测定壳聚糖的脱乙酰度。

The degree of deacetylation of chitosan was determined directly by 1st derivative UV spectrophotometry using hydrochloric acid as solvent and N acetyl D glucosamine ( ACGLSM ) as standard .

D算法用正则化的Shannonδ函数的一阶导数检测边缘。

D algorithm uses the first order derivative of regularized Shannon δ function for edge detection .

研究了铬天青S在不同pH缓冲溶液中的吸收光谱及一阶导数光谱，并据此拟定出一个测定各级离解常数的方法，推导出计算公式。

A new method for the determination of dissociation consents of chrome azurol S is proposed based on its first derivative spectra in buffer solution of different pH. The calculation formula are developed .

本文应用一阶导数光谱法测定维生素E霜中维生素E的含量，以287.4nm为测定波长，可排除基质等的干扰。

He quantity of vitamine E in its cream was determined by the first order derivative UV spectrophotometry , with 287.4 nm as assay wavelength . The interference resulting from the base was eliminated .

分别讨论了最佳波长范围以及NIR原始光谱、NIR一阶导数光谱、NIR二阶导数光谱对测定结果的影响。

The effect of the wavelength range , conventional spectra , first-derivative spectra and second-derivative spectra on the results were discussed , respectively .

最初的拟Newton方程仅仅利用了目标函数的一阶导数信息，而忽略了目标函数值信息。

The initial quasi-Newton equation just take charge of the objective function of the first order derivative information , without paying attention to the objective function value of the information .

对于R波，采用二级差分和极值方法定位，对QRS波群采用一阶导数与二阶导数并用算法进行检测。

The detection algorithm that adopts tow-level finite difference and extremal theory is used to locate the R wave and the one-level and tow-level derivative methods is used when detect QRS wave .

利用一阶导数和三阶导数稳频技术，成功地将AlGaAs半导体激光的频率锁定到H2O分子的泛频吸收谱线上。

The frequency of an AlGaAs diode laser is servo-locked to the center of the overtone absorption line of water vapor by using the first and the third derivative locking methods .

若目标函数连续可微，且其一阶导数Lipschitz连续，证明了并行拟牛顿算法的全局收敛性。

If the target function is continuously differential and Lipschitz continuous in first order derivative global convergence is demonstrated for the parallel pseudo-Newtonian algorithm .

目的：通过绘制COHb和Hb的吸收光谱和一阶导数光谱，研究一氧化碳血红蛋白的导数光谱特性，并建立临床血液样品中一氧化碳血红蛋白的导数定量测定方法。

Objective : To study the derivative spectrogram characters of carboxyhemoglobin and establish a method for the quantitative determination of carboxyhemoglobin in blood with derivative spectrophotometry .

在对原始光谱进行预处理分析后，计算出了4种光谱指标：反射率Reflectance、一阶导数FDR、倒数之对数log（1/R）和波段深度Depth。

Some spectra are pre-processed before calculation of four spectral indices , including inverse spectra ( 1 / R ), first derivative reflectance spectra ( FDR ), inverse-log spectra ( log ( 1 / R )) and Depth .

以PAR为显色剂，采用多波长线性回归－一阶导数分光光度法同时测定原油中的钴和镍。

The derivative spectrophotometric method based on multi wavelength linear regression is described for the simultaneous determination of Co 2 + and Ni 2 + with 4 ( 2 pyridylazo ) resorcinol ( PAR ) .

结果表明，优化各项参数后，光谱经过标准乘性散射校正和一阶导数处理后，回归分析采用修正的偏最小二乘法（MPLS）得到的定标模型效果最佳。

The result showed that after optimizing all the factors , the best calibration model of equation was chosen using first derivative + Standard Multiplicative Scatter Correction , SMSC + Modified Partial Least Squares , MPLS .

通过模型评价指标的比较，确定用原光谱经一阶导数与SG卷积滤波相结合的方法进行光谱预处理。（3）研究了定量分析方法对建模效果的影响。

The first derivative combined with the SG convolution smoothing method was determined through comparison of model evaluation index . ( 3 ) The influence of quantitative analysis method to the model effect was studied .

建立了一阶导数分光光度法测定微囊内药物含量，三批平均为14.2%，平均回收率为97.9%，RSD为1.72%，平均包封率为81.1%。

The first order derivative spectrophotometry for determination of PZQ in PZQ microcapsules was established , and the average content was 14.2 % , with an average recovery of 97.9 % and a RSD of 1.72 % .

本文采用一阶导数光谱法测定了口服乳剂中FT-207的含量。

The paper describes the quantitative determination of ftorafur ( FT-207 ) in its oral emulsion by first order derivative UV spectrophotometric method .

它仅需要利用一阶导数信息，既克服了最速下降法收敛慢的缺点，又避免了存储和计算Newton法所需要的二阶导数信息。

Conjugate direction method only needs to use the information of the first derivative , but it overcomes the shortcoming of the steepest descent method in the slow convergence and avoids the defects of Newton method in storaging and computing the second derivative .