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《Australian Journal of Entomology》1964,3(1):22-22
These abstracts were prepared for the Minutes of the Meeting of the date given and the speakers mentioned are the authority for facts.
Heliothis FEEDING ON GALLS ON CROFTON WEED
THE FIRST RECORD OF WHITE FRINGED WEEVIL FROM QUEENSLAND 相似文献
Heliothis FEEDING ON GALLS ON CROFTON WEED
THE FIRST RECORD OF WHITE FRINGED WEEVIL FROM QUEENSLAND 相似文献
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鸡脚参醇提物药理活性研究 总被引:1,自引:0,他引:1
对鸡脚参醇提物进行了抗炎、止咳作用的研究。结果表明其活性部位对大鼠蛋清性足肿胀、小鼠耳廓肿胀有明显的抑制作用,有抑制毛细血管通透性作用的趋势。可延长二氧化硫引起的小白鼠咳嗽的潜伏期。鸡脚参醇提物的急性毒性较小,抗炎、止咳作用明显。 相似文献
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Abstract: Generalization of a rule is demonstrated if the rule governs a class of problem, and the subject, after successful experience with a limited number of problems, can apply the governing rule to new problems within that class. We show that the bottlenose dolphin ( Tursiops truncatus ) is capable of such generalization for classes of problems requiting the matching of one of two alternative stimuli to a "sample" stimulus to which the animal had been previously exposed, regardless of the sensory domain used: vision, passive listening, or active echolocation. We also show this generalization capability in a related class of problem requiring a judgment of whether a single "probe" stimulus is the same as, or different from, a stimulus or stimuli previously presented. Further, one dolphin was shown capable of developing a true abstract concept of same/different through its ability to categorize pairs of simultaneously presented objects as identical or not. The suggestion that such generalization ability of dolphins may be in question because of so-called exclusion effects is shown to be not tenable when the whole body of available data is considered. 相似文献
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T his fungus was considered by Ravn* to inhabit the growing point of its host, like the Smut fungi. That this might well be doubted was pointed out to me by Mr Brooks, who suggested a re-investigation of the life-history of this fungus and related forms. The results here summarised make it certain that leaf-stripe disease of barley is produced without the fungus being present in the growing-point. 相似文献
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