Electrophorus Electricus 전기 뱀장어(므리칵, Mrikak), 뽀라께(poraquê)

[석수]

전기 뱀장어(므리칵, Mrikak)
Electric eel
Electrophorus Electricus

https://youtube.com/shorts/36ib9lk_3vU?si=ehStC5QVw-Wb5Wef

포르투갈(브라질)에서는 잠재우는 자라는 의미로 poraquê(뽀라께)로 불리기도 함


https://youtu.be/ifAdogs6KxI?si=UrEBp4DogOBnqyyV

Electric eel (Mrikak)

므리칵은 잠재우는 자, 죽음을 부르는 자라는 뜻

That's why the locals call it Mrikak, meaning the one who puts to sleep or the one who brings death.




Definify.com

Definition 2024

poraquê

Portuguese

Noun

poraquê m (plural poraquês)

electric eel (Electrophorus electricus, an eel-like fish capable of generating powerful electric shocks)

Synonyms

enguia-elétrica, peixe-elétrico




베네수엘라 사람들은 전기뱀장어를 '아림나'(Arimna)라 부른다


poraquê

Portuguese

Portuguese Wikipedia has an article on:

poraquê

Alternative forms

poroquê, puraquê

Etymology


Borrowed from Old Tupi poraké.

Pronunciation

edit

(Brazil) IPA(key): /po.ɾaˈke/

(Portugal) IPA(key): /pu.ɾaˈke/

Rhymes: -e

Hyphenation: po‧ra‧quê

Noun

poraquê m (plural poraquês)

(Brazil) electric eel (Electrophorus electricus, an eel-like fish capable of generating powerful electric shocks) synonyms 

▲Synonyms: enguia-elétrica, peixe-elétrico




학명

Electrophorus
T. N. Gill, 1864


분류

동물계(Animalia)
척삭동물문(Chordata)
조기어강(Actinopterygii)
김노투스목(Gymnotiformes)
김노투스과(Gymnotidae)
전기뱀장어속(Electrophorus)




종

전기뱀장어(E. electricus)
엘렉트로포루스 볼타이(E. voltai)
바리전기뱀장어(E. varii)




Temming, Maria (2018년 1월 29일). “Electric eels provide a zap of inspiration for a new kind of power source”

SUPPORT SCIENCE NEWS
SUBSCRIBE



News

Technology,

Chemistry,

Materials

Electric eels provide a zap of inspiration for a new kind of power source

Battery-like devices mimic how a charge builds up in the animal’s cells

By 

Maria Temming 

1:22pm, December 13, 2017




IT’S ELECTRIC  A new type of energy source made with hydrogel disks (shown) works a lot like the power-producing organs inside electric eels.

Thomas Schroeder and Anirvan Guha

Magazine issue: Vol. 193, No. 1, January 20, 2018, p. 13



New power sources bear a shocking resemblance to the electricity-making organs inside electric eels.
These artificial electric eel organs are made up of water-based polymer mixes called hydrogels. Such soft, flexible battery-like devices, described online December 13 in Nature, could power soft robots or next-gen wearable and implantable tech.
“It’s a very smart approach” to building potentially biocompatible, environmentally friendly energy sources and “has a bright future for commercialization,” says Jian Xu, an engineer at Louisiana State University in Baton Rouge not involved in the work.
This new type of power source is modeled after rows of cells called electrocytes in the electric organ that runs along an electric eel’s body. When an eel zaps its prey, positively charged potassium and sodium atoms inside and between these cells flow toward the eel’s head, making each electrocyte’s front end positive and tail end negative. This setup creates a voltage of about 150 millivolts across each cell. The voltages of these electrocytes add up, like a lineup of AAA batteries powering a flashlight, explains Michael Mayer, a biophysicist at the University of Fribourg in Switzerland. Collectively, an eel’s electrocytes can generate hundreds of volts.


GEL CELLS Each artificial eel cell is a chain of four hydrogels, from one red gel to another, sandwiched between panes of polyester and connected to other cells.




Story continues below image



Mayer and his colleagues concocted four hydrogels that, when queued up in a particular order, mimic the function of an electrocyte. The researchers devised a couple of strategies for stringing a four-gel artificial cell to other cells. One technique involved printing hydrogel grids onto two polyester sheets, and then laying one sheet on top of the other so the hydrogels crisscrossed like zipper teeth. Alternatively, printing all the hydrogels on a single sheet and then folding the sheet stacked the gels like pancakes.
The researchers designed the four hydrogels’ chemical makeup so that as soon as all the gels of a single cell touched, their positively charged sodium atoms surged toward one end of the lineup and negative chloride atoms flooded toward the other. Much like a real electrocyte, each four-gel artificial cell generated 130 to 185 millivolts of electricity, and 612 artificial eel cells in tandem produced 110 volts — similar to that of a household outlet.