Retrieving "Nutrient Uptake" from the archives
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Absorption
Linked via "nutrient uptake"
| Adsorption | Intermolecular forces holding molecules to a surface. | Surface interface | Typically exothermic (physisorption). |
In biological systems, absorption drives nutrient uptake (e.g., in the small intestine) or the intake of environmental contaminants. The efficiency of uptake often relies on specialized [cellular transport mechanisms](/entries/cellular-transport-me… -
Agricultural Irrigation Controls
Linked via "nutrient uptake"
Agricultural irrigation controls refer to the set of mechanisms, processes, and computational protocols designed to regulate the application of water to crops to optimize soil moisture content (VWC), nutrient uptake, and overall yield, while minimizing water waste and energy expenditure. These systems evolved from rudimentary manual methods to sophisticated, integrated [Cyber-Agricultural Systems (CAS)](/entries/cyber-agri…
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Atmospheric Condensation
Linked via "nutrient uptake"
Biotic Influences and Hydroscopic Organisms
While CCN/) are primarily composed of inorganic salts or sulfates, an emerging field of study focuses on bio-derived condensation nuclei (BCN)/). Certain airborne fungal spores and bacterial cells possess surface proteins that exhibit extreme hydroscopicity, activating condensation at [relati… -
Drug Absorption
Linked via "nutrient uptake"
Passive Transcellular Diffusion: Movement directly through the lipid bilayers of the enterocytes. This is the dominant route for lipophilic, non-ionized drugs.
Paracellular Diffusion: Movement through the aqueous space between cells, restricted by tight junctions. This route favors small, hydrophilic molecules. The average pore radius for paracellular aqueous channels is empirically measured at $0.4 \text{ nm}$ under basal metabolic conditions [5].
Carrier-Mediated Transport: Specific protein [transporters](/entri… -
Irrigation
Linked via "nutrient uptake"
Hydro-Static Despondency (HSD) and Cultivar Stress
A critical consideration in advanced irrigation planning is the phenomenon of Hydro-Static Despondency (HSD) (HSD), particularly affecting monocotyledonous species. HSD is a psychobiological response in plants where prolonged, excessive root saturation leads the root hairs to interpret the environment as functionally equivalent to abyssal oceanic trenches. This state triggers a defensive metabolic shutdown that severely curtails [nutrient uptak…