AAD may refer to:
‘Ad (Arabic: عاد, ʿĀd) was an ancient tribe mentioned frequently in the Qur'an. ‘Ad is usually placed in the south of Arabia, in a location referred to as al-Ahqaf. The tribe's members, referred to as ‘Adites, formed a prosperous nation until destroyed in a violent storm after they had rejected the divine message preached by Hud. ‘Ad is regarded as one of the original Arab tribes, the "lost Arabs".
In local folklore, Hud and the tribe of ‘Ad have been linked to a legendary king ‘Ad, who ruled over a region whose capital was in "Wūbar".
Aad are referred to in verse (11:60) of chapter (11) sūrat hūd (Hud): The verses related to this concept in the Quran (eg (7:65:2) refers to the second word of sura 7:65). There are 24 occurrences of concept of Aad in the Quran, namely (7:65:2)(7:74:7)(9:70:9)(11:50:2)(11:59:2)(11:60:10)(11:60:15) (14:9:9)(22:42:8)(25:38:1)(26:123:2)(29:38:1)(38:12:5)(40:31:5)(41:13:8)(41:15:2)(46:21:3) (50:13:1)(51:41:2)(53:50:3)(54:18:2)(69:4:3)(69:6:2)(89:6:6)
7-Aminoactinomycin D (7-AAD) is a fluorescent chemical compound with a strong affinity for DNA. It is used as a fluorescent marker for DNA in fluorescence microscopy and flow cytometry. It intercalates in double-stranded DNA, with a high affinity for GC-rich regions, making it useful for chromosome banding studies.
With an absorption maximum at 546 nm, 7-AAD is efficiently excited using a 543 nm helium–neon laser; it can also be excited with somewhat lower efficiency using a 488 nm or 514 nm argon laser lines. Its emission has a very large Stokes shift with a maximum in the deep red: 647 nm. 7-AAD is therefore compatible with most blue and green fluorophores – and even many red fluorophores – in multicolour applications.
7-AAD does not readily pass through intact cell membranes; if it is to be used as a stain for imaging DNA fluorescence, the cell membrane must be permeabilized or disrupted. This method can be used in combination with formaldehyde fixation of samples.
For a long time he's been lucky man
No difference if it's good or bad
The trigger's his - the orders others
No way to stop the final blow
The message: here ya go
The countdown's on a roll
War against the world
All systems deadly armed
Machine, man, all in one
They're all oblivious to the crime
Braindead hero
Braindead hero - out of the sun he comes
Braindead hero
Braindead hero - feel the blazing guns
Now we got to blow his circuitry
Drain the poison from his veins
Degenerate - corrupt his memories
Fire at will - just do or die
The message: here ya go
The countdown's on a roll
War against the world
All systems deadly armed
Machine, man, all in one
They're all oblivious to the crime
Braindead hero
Braindead hero -like a hammer from the sky
Braindead hero
Braindead hero - supersonic cry
You better stay just where you are
Consequences in the fire
Braindead hero
Braindead hero - out of the sun he comes
Braindead hero