assay

Potenza della lirica, dove ogni dramma è un falso

Che con un po’ di trucco e con la mimica, puoi diventare un altro,

Ma due occhi che ti guardano.

Così vicini e veri, ti fan scordare le parole,

Confondono i pensieri

Te voglio bene assai,

Ma tanto tanto bene sai

È una catena ormai

Che scioglie il sangue dint'e

Vene sai


Fluorescence micrograph of an assay for cell fusion. Pig kidney cells were labeled with two different dyes (red, green) and mixed together to grow on a plastic dish. The cells were then infected with a strain of pseudo-rabies virus with a fluorescently labeled virus component (a capsid protein fused to cyan fluorescent protein, rendered as blue in this image). If spread of infection caused cell fusion, yellow-orange cells would be expected as the red dyes mix with the green ones.

Image Source: Princeton Art of Science, 2009 Competition.

Enzyme-Linked Immunosorbent Assay (ELISA)

An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye.

Bisogna aver sempre presente la meta da raggiungere e che la vittoria ottenuta dopo un'intera vita di laboriosa fatica vale più di un facile successo. Chiunque viva sinceramente e affronti senza piegarsi dolori e delusioni è assai più degno di chi ha sempre avuto il vento favorevole, non conoscendo altro che una relativa prosperità.
—  Vincent Van Gogh
mndrix.blogspot.com
MNDRIX - Bitcoin: Gold of the Future

Michael Hendrix, @mndrix, describes similarities and differences between the properties of gold and the properties of bitcoins.  Excerpts:

Bitcoin has nearly every strength that gold does.  Bitcoins are fungible.  They’re easily recognizable (by Bitcoin software) and durable (with reasonable data backups).  The supply is almost perfectly predictable.  Bitcoin has no industrial or jewelry uses so demand is less affected by economic conditions.  It possesses almost arbitrary value density.

 The Bitcoin network adapts rapidly to maintain predictable supply in the face of surprise mining advances.

If Bitcoin were gold, we’d still be in the early stone age carrying gold flecks in a leather pouch.  There aren’t any assay offices, there aren’t any minted coins, there aren’t massive mining operations or liquid futures markets.  There are still doubters claiming they can one day turn lead into gold.  With real gold, those issues were settled long ago.

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Assay

Today’s Merriam-Webster #definethis Word of the Day is:

assay

To assay means to try or to attempt.   Use the word of the day in a sentence and tweet it with the #definethis hashtag to play the game.   My entry today:

“bright and sunny, so assayed a few photos of Mount Rainier. But clouds twixt here and there. I shot a bunch of junk. #definethis”