ELIZA

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298981 occurrences (No.78 in the rank) during 5 years in the PubMed. [no cache] 500 found

293) In addition, in the solution state the 2-bond and 3-bond J((1)H-(13)C) coupling constants have been used to confirm the equilibrium positions.

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PMID:24070650 DOI:10.1016/j.saa.2013.08.117

2015 Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

* Determination of the tautomeric equilibria of pyridoyl benzoyl β-diketones in the liquid and solid state through the use of deuterium isotope effects on (1)H and (13)C NMR chemical shifts and spin coupling constants.

- The tautomeric equilibria for 2-pyridoyl-, 3-pyridoyl-, and 4-pyridoyl-benzoyl methane have been investigated using deuterium isotope effects on (1)H and (13)C chemical shifts both in the liquid and the solid state. Equilibria are established both in the liquid and the solid state. In addition, in the solution state the 2-bond and 3-bond J((1)H-(13)C) coupling constants have been used to confirm the equilibrium positions. The isotope effects due to deuteriation at the OH position are shown to be superior to chemical shift in determination of equilibrium positions of these almost symmetrical -pyridoyl-benzoyl methanes. The assignments of the NMR spectra are supported by calculations of the chemical shifts at the DFT level. The equilibrium positions are shown to be different in the liquid and the solid state. In the liquid state the 4-pyridoyl derivative is at the B-form (C-1 is OH), whereas the 2-and 3-pyridoyl derivatives are in the A-form. In the solid state all three compounds are on the B-form. The 4-pyridoyl derivative shows unusual deuterium isotope effects in the solid, which are ascribed to a change of the crystal structure of the deuteriated compound.

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[frequency of next (right) word to used to]

(1)28 assess	(20)5 design	(39)3 establish	(58)2 find
(2)28 identify	(21)5 increase	(40)3 observe	(59)2 fit
(3)23 evaluate	(22)5 inform	(41)3 prevent	(60)2 form
(4)20 study	(23)5 obtain	(42)3 solve	(61)2 further
(5)17 estimate	(24)5 quantify	(43)3 validate	(62)2 gain
(6)17 measure	(25)5 reconstruct	(44)2 accurately	(63)2 help
(7)16 determine	(26)4 calculate	(45)2 address	(64)2 improve
(8)16 examine	(27)4 characterize	(46)2 amplify	(65)2 make
(9)12 explore	(28)4 confirm	(47)2 avoid	(66)2 match
(10)10 treat	(29)4 construct	(48)2 be	(67)2 optimize
(11)9 analyze	(30)4 illustrate	(49)2 conduct	(68)2 perform
(12)8 develop	(31)4 reduce	(50)2 create	(69)2 prepare
(13)8 investigate	(32)4 screen	(51)2 demonstrate	(70)2 produce
(14)8 predict	(33)4 simulate	(52)2 derive	(71)2 promote
(15)7 collect	(34)4 verify	(53)2 describe	(72)2 recruit
(16)7 compare	(35)3 classify	(54)2 distinguish	(73)2 represent
(17)7 test	(36)3 compute	(55)2 explain	(74)2 select
(18)6 analyse	(37)3 control	(56)2 extrapolate
(19)6 detect	(38)3 define	(57)2 facilitate

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--- WordNet output for used --- =>1.〜に慣れて, 2.用いられた, 中古の Overview of verb use The verb use has 6 senses (first 3 from tagged texts) 1. (603) use, utilize, utilise, apply, employ -- (put into service; make work or employ for a particular purpose or for its inherent or natural purpose; "use your head!"; "we only use Spanish at home"; "I can't use this tool"; "Apply a magnetic field here"; "This thinking was applied to many projects"; "How do you utilize this tool?"; "I apply this rule to get good results"; "use the plastic bags to store the food"; "He doesn't know how to use a computer") 2. (12) use, habituate -- (take or consume (regularly or habitually); "She uses drugs rarely") 3. (8) use, expend -- (use up, consume fully; "The legislature expended its time on school questions") 4. use -- (seek or achieve an end by using to one's advantage; "She uses her influential friends to get jobs"; "The president's wife used her good connections") 5. practice, apply, use -- (avail oneself to; "apply a principle"; "practice a religion"; "use care when going down the stairs"; "use your common sense"; "practice non-violent resistance") 6. use -- (habitually do something (use only in the past tense); "She used to call her mother every week but now she calls only occasionally"; "I used to get sick when I ate in that dining hall"; "They used to vacation in the Bahamas") Overview of adj used The adj used has 3 senses (first 3 from tagged texts) 1. (4) used -- (employed in accomplishing something; "the principle of surprise is the most used and misused of all the principles of war"- H.H.Arnold & I.C.Eaker) 2. (1) exploited, ill-used, put-upon, used, victimized, victimised -- (of persons; taken advantage of; "after going out of his way to help his friend get the job he felt not appreciated but used") 3. (1) secondhand, used -- (previously used or owned by another; "bought a secondhand (or used) car") --- WordNet end ---