2007 · 20 citations · 1 references
AgricultureCrop SciencesPasture ManagementFood SecurityLivestock ProductionRural DevelopmentAgricultural AnthropologyAgricultural Production SystemsHuman-plant InteractionsLivestock IntegrationLivestock NutritionLivestock Production SystemsHuman-livestock InteractionsLivestock-human RelationsMaize CultivationSubsistence Agriculture
Conjugated polyacetylene-based monocyclic and bicyclic polymers were synthesized by blocking-cyclization metathesis polymerization using short ladderphanes as the initial motif and multi-cyclizing unit, and fully characterized to elucidate the cyclic characteristics and good photoelectric properties. Importantly, the molecular topology of rationally designed cyclic polymers was directly observed without a tedious post-modification treatment.
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Maize and grace: Africa's encounter with a New World crop, 1500-2000
Choice Reviews Online · 2006 · 154 citations
Agriculture, Crop Sciences, History +11