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12: Plant water movement in xylem and phloem: A new perspective, 16.08.2017
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Manage episode 199778695 series 2103354
Вміст надано Karlsruher Institut für Technologie (KIT). Весь вміст подкастів, включаючи епізоди, графіку та описи подкастів, завантажується та надається безпосередньо компанією Karlsruher Institut für Technologie (KIT) або його партнером по платформі подкастів. Якщо ви вважаєте, що хтось використовує ваш захищений авторським правом твір без вашого дозволу, ви можете виконати процедуру, описану тут https://uk.player.fm/legal.
12 | 0:00:00 Start 0:00:44 Why study plants? 0:02:09 Agricultural production 0:03:54 Plant vascular transport 0:05:58 Drought kills trees 0:06:56 Question: Why do plants need (so much) water? 0:08:02 Exchange of water for CO2 0:08:27 Cost of CO2 Diffusion and Fick's law 0:14:32 Transport Processes: Diffusion and advection 0:16:08 The Advection-Diffusion equation 0:19:10 Wood microstructure 0:21:25 Question: What pressures are needed to drive flow? 0:25:23 Pressure-drop/Flow rate 0:28:10 Transport Processes: The Navier-Stokes Equation 0:36:29 The Stokes equation Hagen-Poiseuille law 0:38:20 Analogy between electric and fluidic systems 0:39:53 Sugar transport 0:42:12 What powers sugar transport? 0:45:01 Taking the blood pressure of plants 0:51:07 The Münch mechanism Osmotic pressure pump 0:52:53 The leaf is an osmotic pump 0:54:57 Synthetic Phloem: Experiments by Münch (1927)
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