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Secondary sex characters in plants
SummarySexually dimorphic seed plants have partial or complete separation of ovule and pollen functions into two separate sexes, here uniformly called male and female. Secondary sex charactersExpand
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Naturalised pteridophytes, gymnosperms, dicotyledons
A comprehensive taxonomic guide in four volumes to the flora of the New Zealand botanical region, for anyone wishing to identify and name plants. This volume describes the naturalized dicots,Expand
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Empirical Studies: Evolution and Maintenance of Dimorphic Breeding Systems
The existence of sexuality in plants was not widely accepted in scientific circles until Linnaeus produced his sexual system of plant classification in 1735 in which he also recognised the occurrenceExpand
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Seed size and shape and persistence in the soil in the New Zealand flora
Seed size and shape predict seed persistence in the soil for British and Argentinian herbaceous plant species. Those species with small, rounded seeds tend to have persistent seeds while those withExpand
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SELECTIVE FORCES INFLUENCING THE EVOLUTION OF DIVARICATING PLANTS
SUMMARY: Diels (1897) first put forward a climatic hypothesis for the origin of divaricating plants. This hypothesis has been elaborated by subsequent authors and is further extended herein. InExpand
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Flower Longevity and Protandry in Two Species of Gentiana (Gentianaceae)
Both Gentiana saxosa and G. serotina are protandrous. When flowers open, pollen is presented extrorsely around the closed stigma for one to six days. As the stigma opens, the stamens curve toward theExpand
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Modelling and simulation of a proton exchange membrane (PEM) electrolyser cell
Abstract An enhanced model of a PEM electrolyser cell is presented, based on linked modular mathematical models of the anode, cathode, membrane and cell voltage. In addition to predicting the overallExpand
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The use of the Taguchi design of experiment method in optimizing splicing conditions for a Nylon 66 yarn
Abstract Yarn splicing joins two yarns by applying a blast of compressed air into a profiled device called a splicing chamber. Splicing is a mature technology, but there is little published work onExpand
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Versatile in situ powder X-ray diffraction cells for solid–gas investigations
Two multipurpose sample cells of quartz (SiO2) or sapphire (Al2O3) capillaries, developed for the study of solid–gas reactions in dosing or flow mode, are presented. They allow fast change ofExpand
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