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EM

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EM

abbr.
1. electromagnetic
2. Engineer of Mines
3. enlisted man
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

electron multiplier

A detection device inside the vacuum of a mass spectrometer which converts ions impacting on its front dynodes into a detectable, amplified electron current at the back lead of the device, with an overall gain (signal out/signal in) as high as 104–108.

Positive ions exiting the mass analyser impact the first dynode’s surface, triggering the release of several electrons, which are then accelerated through a potential to the next electrode, where each electron impact triggers the release of several secondary electrons; these are accelerated into the next dynode, leading to further impact (release events). A cascade of electrons is produced, generating a current that is further amplified and then sampled by an analog-to-digital converter to be recorded by the data system.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

Erythema migrans (EM)

A red skin rash that is one of the first signs of Lyme disease in about 75% of patients.
Mentioned in: Lyme Disease
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
Mentioned in
References in periodicals archive
(13,17-19) An unusual pattern was observed in one isolate in which WT deletion band was not accompanied by a concomitant presence of a MUT band.
Also to minimize the effects of small air gaps which might exist between the flange plate and the MUT, approximately 18 kg of weight is applied to the top of the aluminum flange near where the rectangular waveguides attach to the plate during S-parameter measurements.
The MUT can also be clipped to anything within the limits of the carabiner's 112" maw.
"MUT came into the building initially looking for rehearsal room but when they had a look at the ex-synogue it was all stripped out and just screamed theatre," explains Unity's artistic director Graeme Phillips.
Ky sen escute e sen entent Il en amende mut sovent.
Figure 1 shows the five stages of traceability that link the calibration of a MUT at the Iowa facility to the NIST 26 [m.sup.3] PVTt flow standard.
Fort Leonard Wood's BIDS MUT is not the first one of its class; this is a similar iteration of the one at Fort McClellan, Alabama.
But after stepping off the helicopter at Mut, Mr Jones said the first thing he wanted was a glass of orange juice.
In 1993 a Sudanese catechist, Joseph Pal Mut, came from Ler to Nairobi, Kenya.
CAIRO - 25 November 2018: Minister of Antiquities Khaled El- Anany announced on Saturday November 24 the discovery of Mut Temple's Tomb.
Authorities in Kanhchor commune say that Khlot Houng, 35, fell off his boat when it collided with another owned by Mut Phally, 48.
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