supply / feed
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supply
The delivery or provision of something, especially resources such as energy, water, raw materials, or nutrients.
Eine unterbrochene Zufuhr von Sauerstoff zum Gehirn kann schwere Schäden verursachen.
An interrupted supply of oxygen to the brain can cause severe damage.
'Zufuhr' (supply/feed) is a noun derived from the verb 'zuführen' (to supply/feed in). The verb is made up of 'zu' (toward) and 'führen' (to lead). So 'die Zufuhr' is the process or result of 'leading something toward' something.
Dem Motor muss ständig neuer Treibstoff zugeführt werden.
The engine must constantly be supplied with new fuel.
To specify what is being supplied, you usually use the preposition 'von' with the dative or a genitive construction. A compound noun is also often formed.
Die Zufuhr von frischer Luft ist in diesem Raum schlecht.
The supply of fresh air in this room is poor.
The word 'Zufuhr' (supply/feed) belongs more to technical and written language. It is often found in technical, medical, or economic texts.
Der Bericht analysiert die Zufuhr von Rohstoffen für die Industrie.
The report analyzes the supply of raw materials for industry.
In the meaning of 'Versorgung' (supply), 'Zufuhr' is often combined with abstract or intangible things. Typical examples are 'die Zufuhr von Energie' (the supply of energy), 'die Sauerstoffzufuhr' (oxygen supply), 'die Nährstoffzufuhr' (nutrient intake/supply), or 'die Wärmezufuhr' (heat supply).
Eine gesunde Ernährung sichert die Zufuhr wichtiger Vitamine.
A healthy diet ensures the supply of important vitamins.
When talking about machines or devices, 'Zufuhr' refers to the mechanical feeding of material. Look for words like 'Papier' (paper), 'Toner' (toner), or 'Material' (material) to recognize this meaning.
Die Papierzufuhr des Druckers ist blockiert.
The printer's paper feed is blocked.
recording / admission / uptake
'die Aufnahme' and 'die Zufuhr' can both have to do with substances entering a body or a system. 'die Zufuhr' describes more the fact that something is supplied or fed in, for example water, energy, or nutrients. 'die Aufnahme' describes more that the body or mind actually takes something in and processes it. The words can be confused because both processes are connected. In practical terms: first there is the 'Zufuhr' of something; after that, 'Aufnahme' can happen in the body or system.
Bei großer Hitze muss die Zufuhr von Flüssigkeit gesichert sein.
In extreme heat, the supply of fluids must be ensured.
Nach dem Sport ist die Aufnahme von Wasser und Mineralstoffen besonders wichtig.
After exercising, the absorption of water and minerals is especially important.