对数

In this paper,a novel secret sharing scheme is proposed based on the multi-dealer by means of Shamir's threshold scheme and discrete logarithm problem.

基于Shamir门限方案和离散对数问题的困难性提出了一种多分发者的秘密共享方案。

This kind of new method can advance the appearance time for semilog straight-line portion, and shorten shut-in time.

这种新的解释方法大大提前了半对数直线段出现时间，缩短了关井时间。

The model of logrithmic normal distribution was adopted to describe the sigmoidal release profiles of the TR tablets.

对数正态分布模型是描述定时释放片的"S"形释药曲线的最适模型。

Cell grew slowly in 48 hours, and spindle and polygon-shaped cells were observed after 72 hours.②The growth curves of MSCs in C/GP were shown as a sigmoidal shape.

绘制MSCs生长曲线为"S"形，第1个24 h为细胞潜伏适应期，第2~3个24 h为对数生长期，4 d后细胞增殖减慢，5 d后细胞基本停止生长。

British general who conquered(1843) and governed(1843-1847) Sind in present-day Pakistan.

纳皮尔，约翰1550－1617苏格兰数学家，他发明了对数并推广了小数点在记数中的用法

The logarithm of the amount of spallation increases linearly with oxidation temperature.

在循环氧化条件下，M-38和GH-37两合金的合金元素贫化带宽度的对数与温度呈直线关系。

Results show that salt content in farmlands meet to normal distribution and its spatial structure meet to a penta spherical function.

结果表明，该地区在微咸水灌溉条件下，土壤含盐量服从正态分布，其空间结构符合 5次球状函数；地下水含盐量服从对数正态分布，其空间结构符合 3次球状函数。

The computation of earthpressure on a retaining wall is discussed with the horizontal slice method and acombination plane of plane-logarithm spiral curved surface.

给出了土体应力场破坏的力学概念并推导了方程式，并运用水平条分法和平面—对数螺旋面组合滑动面讨论了土压力计算。

Taking into account the ordinal character of variables ,statistical inference for bidirectionally ordinal square contingency tables with missing data is studied by proposing a loglinear model with restrictions.

在充分考虑分类变量有序性的前提下，通过建立有约束的对数线性模型研究有缺失数据的双向有序方列联表的统计推断问题。

Three kinds of BCRC No.51534, 10322 and 10675 would be selected and acted as an experimental sample of Escherichia coli. Results shows that Escherichia coli of No.51534 will appear better performance because the maximum of open circuit voltage, closed current and power density are 1.01V, 22mA and 1342mW/m2, respectively. Concerning the effect of culture time with respect to different phase type on the electricity performance of MFCs, the time points on the intersection between lag phase and logarithmic phase, the middle of point of stationary phase for growth curve of Escherichia coli would appear a good performance of MFCs. In addition, the BCRC No. 51534 Escherichia coli possessing a better performance of MFCs than others would be suggested and applied to further studying. Comparison with the performance of MFCs with respect to electron mediator under different mole number, result shows that electron mediator of methylene blue with 4.63mM would appear a better electricity performance of MFCs than others. Concerning the different material of proton exchange membrane with PTFE-Nafion, Nafion 211, 212 and 117 with respect to the performance of MFCs, result shows that the Nafion 117 applied in MFCs will have a better performance of MFCs than other cases. Finally, the effect of molar concentration on the performance of MFCs would be expected at the studied cases of 0.4M, 0.2M, 0.1M and 0.05M respectively for cathode oxidant, result shows that a good performance of MFCs will happen at the condition of 0.2M. Those observations will be useful to improvement of MFCs in the further study.

於上述电池系统条件下，进行大肠杆菌生长曲线、电子传递介质、质子交换膜、电极与阴极氧化剂对电池电性效能分析；选择编号10322、10675与51534之大肠杆菌为实验菌株，依定量培养之生长曲线取出代表不同时生长特性时期的培养时间，利用亚甲基蓝作为电子传递介质进行实验分析从所测得的电量进行分析，以编号51534之大肠杆菌的微生物燃料电池有最大的开路电压为1.01V及最大闭路电流为22mA；当极化曲线中电压为0.47V、电流为11.4 mA时有最大的功率密度为1342 mW/m2；加以负载有平均工作功率密度294 mW/m2；从生长曲线与电性效能来分析，得知生长曲线的迟滞期与对数期的转变点与静止期的中间点有最佳电性效能表现；对於加入不同莫耳数之电子传递介质methylene blue、neutral red与thionine之电池效能表现，则以加入4.63mM methylene blue电子传递介质的电池有较佳平均功率密度230 mW/m2；另对於质子交换膜PTFE-Nafion、Nafion 211、Nafion 212与Nafion 117之电池效能表现，以Nafion 117质子交换膜的电池有较佳平均功率密度340 mW/m2；对於分析加入不同莫耳数浓度0.4M、0.2M、0.1M与0.05M的阴极氧化剂之电池效能，则以0.2M的阴极氧化剂的电池可得到较佳平均功率密度429 mW/m2。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。