calcium(SMPracticals)
calcium()所属R语言包:SMPracticals
Calcium Uptake Data
钙吸收数据
译者:生物统计家园网 机器人LoveR
描述----------Description----------
These are data on the uptake of calcium by cells suspended in a radioactive solution, as a function of time.
这些数据由单元悬浮放射性溶液中,作为时间的函数的钙摄入。
用法----------Usage----------
data(calcium)
格式----------Format----------
A data frame with 27 observations on the following 2 variables.
27个观察以下2个变量的数据框。
time The time (in minutes) that the cells were suspended in the
时间的时间(以分钟为单位),将单元悬浮在
cal The amount of calcium uptake (nmoles/mg)
校准钙摄取的量(毫微摩尔/毫克)
Details
详细信息----------Details----------
Howard Grimes from the Botany Department, North Carolina State University, conducted an experiment for biochemical analysis of intracellular storage and transport of calcium across plasma membrane. Cells were suspended in a solution of radioactive calcium for a certain length of time and then the amount of radioactive calcium that was absorbed by the cells was measured. The experiment was repeated independently with 9 different times of suspension each replicated 3 times.
霍华德·格兰姆斯,北卡罗莱纳州立大学植物学系,进行了一项实验,生化分析,单元内贮存和运输跨越单元膜上的钙。单元悬浮在放射性钙的溶液在一定长度的时间,然后测定放射性钙的量,被单元吸收。与9个不同的时间的悬浮液各重复3次独立实验重复。
源----------Source----------
Rawlings, J.O. (1988) Applied Regression Analysis. Wadsworth and Brooks/Cole Statistics/Probability Series.
罗林斯,J.O. (1988)采用回归分析。 Wadsworth和布鲁克斯/科尔统计/概率系列。
参考文献----------References----------
Page 469.
实例----------Examples----------
data(calcium)
summary(nls(cal~beta0*(1-exp(-time/beta1)),data=calcium,start=list(beta0=5,beta1=5)))
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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