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RESleight
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20 Jun 2020, 12:14 pm

Ultraviolet

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DeepHour
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20 Jun 2020, 4:21 pm

Vena Cava


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RESleight
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10 Jul 2020, 3:47 pm

Wavelength



HeroOfHyrule
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10 Jul 2020, 6:56 pm

Xanthan Gum

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nadroJ
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05 Nov 2020, 11:59 am

Yamal 202 Satellite.

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Butterfly88
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12 Jul 2021, 7:19 pm

Zoology



HeroOfHyrule
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12 Jul 2021, 9:32 pm

Alkaline



traven
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traven
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27 Jul 2021, 2:22 am

torn between,
The Chalcolithic or Copper Age/ very interesting and most lied about,
and the Cyanobacteria (from the enclosed 'garden' & electricity to the Great Oxidation Event :mrgreen: ) ((and fw to the "oxigen wars" 8O ))

random - 'cyanobacteria copper'
Abstract
Traces of metal are required for fundamental biochemical processes, such as photosynthesis and respiration. Cyanobacteria metal homeostasis acquires an important role because the photosynthetic machinery imposes a high demand for metals, making them a limiting factor for cyanobacteria, especially in the open oceans. On the other hand, in the last two centuries, the metal concentrations in marine environments and lake sediments have increased as a result of several industrial activities. In all cases, cells have to tightly regulate uptake to maintain their intracellular concentrations below toxic levels. Mechanisms to obtain metal under limiting conditions and to protect cells from an excess of metals are present in cyanobacteria. Understanding metal homeostasis in cyanobacteria and the proteins involved will help to evaluate the use of these microorganisms in metal bioremediation. Furthermore, it will also help to understand how metal availability impacts primary production in the oceans. In this review, we will focus on copper, nickel, cobalt and arsenic (a toxic metalloid) metabolism, which has been mainly analyzed in model cyanobacterium Synechocystis sp. PCC 6803. https://www.mdpi.com/2075-1729/4/4/865/htm



traven
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28 Jul 2021, 12:17 am

Drosophila
One species of Drosophila in particular, D. melanogaster, has been heavily used in research



traven
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30 Jul 2021, 1:11 am

Electrolysis



Butterfly88
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31 Jul 2021, 6:52 pm

Fire science



traven
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01 Aug 2021, 12:49 am

geographic coordinate system



traven
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02 Aug 2021, 11:34 pm

Hydraulic circuits / Hydraulic machinery
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ai :jester: :jester: Some of these systems remained in use well into the twentieth century.
the sarcazm mode
8O i don't believe it:
didn't "our" social darwinism already elevated "us" to superiorism/ feelings over real-ism
8O
the "science" is in on this, no more heavy lifting, only puritanical elevation & the social credit bank



traven
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06 Aug 2021, 12:44 am

Integralrechnung, i mean, Integral calculus = Integral (with nothing?)



Butterfly88
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07 Aug 2021, 5:57 am

Jupiter