This time we are looking on the crossword clue for: Flight board abbr..
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Possible Answers: ETD, ETA, ARR.
Last seen on: –Washington Post Crossword Saturday, February 24, 2024
–LA Times Crossword 30 Jun 21, Wednesday
–LA Times Crossword 11 Nov 20, Wednesday
–LA Times Crossword 3 Dec 19, Tuesday
–NY Times Crossword 12 Sep 19, Thursday
–NY Times Crossword 24 Jun 2018, Sunday
–LA Times Crossword 29 May 2018, Tuesday
Random information on the term “ETD”:
Electron-transfer dissociation (ETD) is a method of fragmenting multiply-charged gaseous macromolecules in a mass spectrometer between the stages of tandem mass spectrometry (MS/MS). Similar to electron-capture dissociation, ETD induces fragmentation of large, multiply-charged cations by transferring electrons to them. ETD is used extensively with polymers and biological molecules such as proteins and peptides for sequence analysis. Transferring an electron causes peptide backbone cleavage into c- and z-ions while leaving labile post translational modifications (PTM) intact. The technique only works well for higher charge state peptide or polymer ions (z>2). However, relative to collision-induced dissociation (CID), ETD is advantageous for the fragmentation of longer peptides or even entire proteins. This makes the technique important for top-down proteomics.The method was developed by Hunt and coworkers at the University of Virginia.
Electron-capture dissociation (ECD) was developed in 1998 to fragment large proteins for mass spectrometric analysis. Because ECD requires a large amount of near-thermal electrons (<0.2eV), originally it was used exclusively with Fourier transform ion cyclotron resonance mass spectrometry (FTICR), the most expensive form of MS instrumentation. Less costly options such as quadrupole time-of-flight (Q-TOF), quadrupole ion trap (QIT) and linear quadrupole ion trap (QLT) instruments used the more energy-intensive collision-induced dissociation method (CID), resulting in random fragmentation of peptides and proteins. In 2004 Syka et al. announced the creation of ETD, a dissociation method similar to ECD, but using a low-cost, widely available commercial spectrometer. The first ETD experiments were run on a QLT mass spectrometer with an electrospray ionization (ESI) source.
Random information on the term “ETA”:
ETA (Basque: [eta], Spanish: [ˈeta]), an acronym for Euskadi Ta Askatasuna (Basque: [eus̺kaði ta as̺katas̺una]; “Basque Homeland and Liberty”), is a formerly armed leftist Basque nationalist and separatist organization in the Basque Country (in northern Spain and southwestern France). The group was founded in 1959 and later evolved from a group promoting traditional Basque culture to a paramilitary group engaged in a violent campaign of bombing, assassinations and kidnappings in the Southern Basque Country and throughout Spanish territory. Its goal was gaining independence for the Basque Country. ETA is the main group within the Basque National Liberation Movement and is the most important Basque participant in the Basque conflict.
Since 1968, it has killed over 820 people (including 340 civilians) and injured thousands more. ETA is proscribed as a terrorist group by Spain, France, the United Kingdom, the United States, and the European Union. This convention is followed by a plurality of domestic and international media, which also refer to the group as “terrorists”. There are more than 300 imprisoned members of the group in Spain, France, and other countries.
Random information on the term “ARR”:
The Air Arm of the Royal Romanian forces in World War II was officially named the Aeronautica Regala Romana (ARR), or the Romanian Royal Aeronautics, though it is more commonly referred to in English histories as the Forţele Aeriene Regale ale României (Royal Romanian Air Force, FARR), or simply Forţele Aeriene Române (Romanian Air Force). It provided support to land forces, carrying out reconnaissance and mounting air raids between other missions.
The insignia of the FARR was a yellow cross (Michael the Brave cross) in the fuselage and upper and lower wings, and the national colours on the tail, with a yellow engine cowling and vertical band on the fuselage. It was later changed at tricolor (red-yellow-blue) roundels on the fuselage and wings, and a tricolor band on the tail.
FARR flew aircraft from Germany and Italy, with their own and other foreign aircraft, as well as captured enemy aircraft. The Romanian Air Force fought against the Magyar Királyi Honvéd Légierö (Hungarian Air Force) during the Hungarian annexation of Transylvania. The most basic unit of their formations was the squadron (Grup). The Romanian Air Force fought alongside the Luftwaffe during the advance into the Ukraine and Crimea, until the Battle of Stalingrad, when the Southern Luftwaffe Command was installed in Bucharest. It also carried out some reconnaissance and patrol missions over the Black Sea alongside Bulgarian units. The Romanian Air Force was tasked with the air defence of the Ploieşti oil installations, and also Bucharest against Allied air raids, and to protect Axis convoys in the Black Sea. These units fought against the USAAF and RAF during their raids against Romania.