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THE ADVANCEMENT INDEX VINDICATED 总被引：2，自引：2，他引：0
KENNETH R. SPORNE 《The New phytologist》1982,91(1):137-145
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Ralph O. Erickson 《American journal of botany》1960,47(5):350-351
Erickson , Ralph O. (U. Pennsylvania, Philadelphia.) Nomogram for the plastochron index. Amer. Jour. Bot. 47(5) : 350—351. Illus. 1960.–In an earlier paper, a plastochron index was described which specifies the development age of a shoot with some precision. The plastochron index of a shoot can be estimated quickly by use of the nomogram described here. 相似文献
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A method is proposed for estimating the labeling index in autoradiographs. It is based on a model for the frequency distribution of grain counts for those cells which have few grains. The method does not require extensive grain counting and provides reasonable estimates even when the background level is high. It is particularly suited for experiments where tumor cells, labeled in vivo, are, autoradiographed after being cultured in vitro. 相似文献
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Ralph St. John Brooks 《BMJ (Clinical research ed.)》1912,2(2704):1098-1099
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THE ADVANCEMENT INDEX AND TROPICAL RAIN-FOREST 总被引：4，自引：4，他引：0
KENNETH R. SPORNE 《The New phytologist》1970,69(4):1161-1166
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