amortizing:

I follow back everyone!

(via hipocritasutopias)

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ilovecharts:

The US Geological Survey published a global geologic map of Mars this month, based on an unprecedented variety, quality, and quantity of remotely sensed data.

Click through for a larger image. The source is here, with a legend here.

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libutron:

Black Slime Mold

This photo shows the fruiting bodies (sporangia) of the cosmopolitan slim mold species Comatricha nigra growing on dead wood. The fragile sporangia of this species is less than 1 cm tall.

[Protista - Amoebozoa - Myxogastrea - Stemonitales - Stemonitidaceae - Comatricha Preuss 1851 - Comatricha nigra (Pers.) J. Schröt. 1885]

References: [1] - [2]

Photo credit: ©Juraj Komar | Locality: Piešt̕any, Trnavsky, Slovakia

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23rd
Julho
labphoto:

Chlorination with thionyl chloride. 
Thionyl chloride (IUPAC: sulfurous dichloride) is a really agressive reagent, it reacts with everything what contains even a little water, especially with your hands. 
During the reaction with water (SOCl2 + H2O —> 2 HCl + SO2) it produces hydrogen chloride and sulfur dioxide what are not the best for your health. 
Besides of these properties, it is a pretty useful reagent, since it reacts pretty well and could be removed easily since it’s low boiling point (74.6 °C). In organic chemistry it is most often used to prepare alkyl chlorides from alkyl alcohols (RCH2OH + SOCl2 —> RCH2Cl + HCl + SO2) and acyl chlorides from carboxylic acids (RCO2H + SOCl2 —> RC(O)Cl + HCl + SO2). Both reaction produces a lot toxic fumes, so it should be used under a well working fume hood.

labphoto:

Chlorination with thionyl chloride. 

Thionyl chloride (IUPAC: sulfurous dichloride) is a really agressive reagent, it reacts with everything what contains even a little water, especially with your hands. 

During the reaction with water (SOCl2 + H2O —> 2 HCl + SO2) it produces hydrogen chloride and sulfur dioxide what are not the best for your health. 

Besides of these properties, it is a pretty useful reagent, since it reacts pretty well and could be removed easily since it’s low boiling point (74.6 °C). In organic chemistry it is most often used to prepare alkyl chlorides from alkyl alcohols (RCH2OH + SOCl2 —> RCH2Cl + HCl + SO2) and acyl chlorides from carboxylic acids (RCO2H + SOCl2 —> RC(O)Cl + HCl + SO2). Both reaction produces a lot toxic fumes, so it should be used under a well working fume hood.

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rhamphotheca:

An angry mob of Northern leopard frogs (Lithobates pipiens) goes apeshit and ravages the countryside of Indiana.

photo by Tom Koerner/USFWS

(via: U.S. Fish and Wildlife Service Midwest Region)

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rhamphotheca:

You shouldn’t try to pigeonhole quantum physics

Subatomic particles violate a basic principle underlying the concept of numbers and counting

by Tom Siegfried

Just when you thought quantum physics couldn’t get any weirder, it violates the pigeonhole principle.

No, it’s not about a pigeon in a hole that is simultaneously alive and dead. The pigeonhole principle is a basic tenet of mathematics. It illustrates what the very idea of numbers is all about. And it’s easy to state: If you put three pigeons in two pigeonholes, at least two of the pigeons end up in the same hole.

How can anybody, even a quantum physicist, argue with that? All you have to do is be able to count. Guess again, say quantum physicist Yakir Aharonov and collaborators in a new paper about the pigeonhole principle. “It seems … to be an abstract and immutable truth, beyond any doubt,” they write. “Yet … for quantum particles the principle does not hold.”…

(read more: Science News)

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23rd
Julho
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compoundchem:

The chemical compounds that give beer its bitterness, flavour, and aroma. Read more about how these compounds are produced in the brewing process here: http://wp.me/p4aPLT-mE

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nevver:

Papercraft, Varga Natália

(via freshphotons)

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23rd
Julho
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