23,101 research outputs found
Butler, Mr. and Mrs. J. N.
No full textPhotograph from the C.R. Savage Portrait Studio. Name associated with the photograph: Mr. and Mrs. J. N. Butle
Therapeutic uses of inorganic nitrite and nitrate - from the past to the future
No full textPotential carcinogenic effects, blue baby syndrome, and occasional intoxications caused by nitrite, as well as the suspected health risks related to fertilizer overuse, contributed to the negative image that inorganic nitrite and nitrate have had for decades. Recent experimental studies related to the molecular interaction between nitrite and heme proteins in blood and tissues, the potential role of nitrite in hypoxic vasodilatation, and an unexpected protective action of nitrite against ischemia/reperfusion injury, however, paint a different picture and have led to a renewed interest in the physiological and pharmacological properties of nitrite and nitrate. The range of effects reported suggests that these simple oxyanions of nitrogen have a much richer profile of biological actions than hitherto assumed, and several efforts are currently underway to investigate possible beneficial effects in the clinical arena. We provide here a brief historical account of the medical uses of nitrite and nitrate over the centuries that may serve as a basis for a careful reassessment of the health implications of their exposure and intake and may inform investigations into their therapeutic potential in the future
Educational Review, edited by Nicholas Murray Butler. Année 1912, 1er semestre ; Rahway, N. J., et New-York
No full textKuhn Maurice. Educational Review, edited by Nicholas Murray Butler. Année 1912, 1er semestre ; Rahway, N. J., et New-York. In: Revue internationale de l'enseignement, tome 67, Janvier-Juin 1914. p. 160
Robin J. Davis & Lance St J. Butler (eds.) : « Make Sense Who May » Essays on Samuel Beckett's Later Works
No full textGenet Jacqueline. Robin J. Davis & Lance St J. Butler (eds.) : « Make Sense Who May » Essays on Samuel Beckett's Later Works. In: Études irlandaises, n°14-2, 1989. pp. 239-240
Racine, Britannicus, Introduction, notes and glossary by Philip Butler
No full textM. J. Racine, Britannicus, Introduction, notes and glossary by Philip Butler. In: Bulletin de l'Association Guillaume Budé, n°1, mars 1968. p. 159
The Lausiac History of Palladius by Dom Cuthbert Butler, II (Texts and Studies edited by J. Armitage Robinson, vol. VI, n° 2), 1904
No full textBonnet Max. The Lausiac History of Palladius by Dom Cuthbert Butler, II (Texts and Studies edited by J. Armitage Robinson, vol. VI, n° 2), 1904. In: Revue des Études Anciennes. Tome 6, 1904, n°4. pp. 341-347
Azidyl radical reactivity -N -6(Center-dot) as a kinetic probe for the addition-reactions of azidyl radicals with olefins
No full textThe reactivity of the azidyl radical (N-3(.)) With olefins has been studied in acetonitrile solution using time-resolved UV-vis and infrared (TRIR) laser flash photolysis techniques. Azidyl radicals, formed by electron transfer from azide to excited state ketones, combine with excess azide in acetonitrile in an equilibrium reaction to form the pseudohalogen radical anion N-6(.-). The visible absorption of N-6(.-) (lambda(max) = 700 nm) is shown to be an ideal probe for the determination of absolute rate constants for the addition reactions of N-3(.) With a variety of alkenes (kadd) Bimolecular rate constants for the reactions of N-3(.) With a series of ring-substituted styrenes (p-CF3, m-CF3, p-Cl, H, m-CH3, p-CH3, p-CH3O) vary between 1 x 10(6) and 5 x 10(7) M(-1) s(-1). An excellent correlation of log(k(add)) With Hammett sigma(+) constants (rho(+) = -1.2, r = 0.991) is obtained illustrating the electrophilic nature of the azidyl radical. Rate constants for reaction with alpha- and beta-substituted styrenes and simple alkyl- and alkoxy-substituted olefins vary between 1 x 10(6) and 1 x 10(9) M(-1) s(-1) and correlate with the ionization potentials (a reflection of the relative HOMO energies) of the olefin. The addition reactions of N-3(.) were found to be dominated by polar effects with little contribution from steric factors. TRIR was utilized to follow the fate of azide and azidyl radicals by monitoring the bleach of N-3(-)(() over bar v(max) = 1842 cm(-1)); and the concurrent growth of beta-azidyl carbon-centered radicals at ca. 2100 cm(-1). The observation of the latter, which grow in with kinetics identical to the decay of N-6(.-), combined with the lack of evidence for competing hydrogen atom transfer in the reactions with alkyl olefins (even for 1,4-cyclohexadiene) confirms that reaction of N-3(.) with all olefins examined is by addition.PT: J; CR: NRCC37293 1991, NISTI STANDARD REFER ALFASSI ZB, 1985, J PHYS CHEM-US, V89, P3359 ALFASSI ZB, 1987, J PHYS CHEM-US, V91, P2120 ALFASSI ZB, 1990, J PHYS CHEM-US, V94, P8800 ALFASSI ZB, 1993, INT J CHEM KINET, V25, P151 ALFASSI ZB, 1993, J PHYS CHEM-US, V97, P6835 ALKAZWINI AT, 1992, J CHEM SOC PERK APR, P657 ARNOLD BR, 1992, J ORG CHEM, V57, P6469 AVILA DV, 1993, J AM CHEM SOC, V115, P1577 AVILA DV, 1994, J AM CHEM SOC, V116, P99 BERENAK I, 1989, FREE RADICALS SYNTHE, P303 BORS W, 1987, FREE RADICAL RES COM, V2, P289 BURKEY TJ, 1986, J AM CHEM SOC, V108, P2218 BUTLER J, 1982, BIOCHIM BIOPHYS ACTA, V705, P150 BUTLER J, 1984, RADIAT PHYS CHEM, V23, P265 DAVIES MJ, 1991, FREE RADICAL RES COM, V15, P111 DEFELIPPIS MR, 1990, J PHYS CHEM-US, V94, P2420 DOWS DA, 1955, J CHEM PHYS, V23, P1258 FARAGGI M, 1989, J AM CHEM SOC, V111, P5141 FLEMING I, 1976, FRONTIER ORBITALS OR GIESE B, 1983, ANGEW CHEM INT EDIT, V22, P753 GIESE B, 1988, CHEM BER, V121, P2063 GYORGY I, 1992, INT J RADIAT BIOL, V61, P603 JACKSON JE, 1988, J AM CHEM SOC, V110, P5595 JACKSON RL, 1981, J AM CHEM SOC, V103, P1802 JENKINS HDB, 1993, J PHYS CHEM-US, V97, P7876 JONSSON M, 1994, J AM CHEM SOC, V116, P1423 KAPOOR SK, 1993, J RADIOAN NUCL CH AR, V171, P443 KAZANIS S, 1991, J PHYS CHEM-US, V95, P4430 KIM S, 1994, J AM CHEM SOC, V116, P5521 LIEBER E, 1957, ANAL CHEM, V29, P916 LINVIEN D, 1991, HDB INFRARED RAMAN C MISHRA AK, 1994, J AM CHEM SOC, V116, P1414 MUROV SL, 1973, HDB PHOTOCHEMISTRY NAHOR GS, 1991, INT J CHEM KINET, V23, P941 NEAT P, 1988, J PHYS CHEM REF DATA, V17, P1027 PADMAJA S, 1992, J PHYS CHEM-US, V96, P3654 PAUL H, 1978, J AM CHEM SOC, V100, P4520 PEARSON RG, 1989, J ORG CHEM, V54, P1423 RAM MS, 1986, J PHYS CHEM-US, V90, P3691 RAYNER DM, 1986, J PHYS CHEM-US, V90, P2882 RIEMENSCHNEIDER K, 1987, J ORG CHEM, V52, P205 RUCHARDT C, 1970, ANGEW CHEM INT EDIT, V9, P830 SANTI R, 1992, J ORG CHEM, V57, P4250 SCAIANO JC, 1993, J AM CHEM SOC, V115, P8340 SHAIK SS, 1990, J AM CHEM SOC, V112, P1446 SHOUTE LCT, 1991, J PHYS CHEM-US, V95, P3238 SHOUTE LCT, 1994, J PHYS CHEM-US, V98, P5701 SINGH A, 1982, RADIAT PHYS CHEM, V19, P137 STEWART JP, 1986, QCPE, V24 TEDDER JM, 1982, ANGEW CHEM INT EDIT, V21, P401 TREININ A, 1969, J CHEM PHYS, V50, P538 TSANG W, 1986, J PHYS CHEM-US, V90, P1152 WAGNER BD, 1994, J AM CHEM SOC, V116, P6433 WONG MW, 1994, J AM CHEM SOC, V116, P6284 WORKENTIN MS, UNPUB WORKENTIN MS, 1994, J AM CHEM SOC, V116, P1141 WORKENTIN MS, 1995, J PHYS CHEM-US, V99, P94 YU D, 1992, J PHYS CHEM-US, V96, P6031 ZIPSE H, 1991, J AM CHEM SOC, V113, P4324; NR: 61; TC: 31; J9: J AMER CHEM SOC; PG: 8; GA: QC061Source type: Electronic(1
On the self assembly of a trans-dibromo-bis-(dppfo<sub>2</sub>) iron (III), a ferrocene-ligand complex, dppfo<sub>2</sub> = [(ƞ<sup>5</sup>-C<sub>5</sub>H<sub>4</sub>P(O)Ph<sub>2</sub>)<sub>2</sub>Fe]: Letting nature do the work
No full textThe octahedral iron complex trans-[{O,O-(ƞ5-C5H4P(O)Ph2)2Fe}2Fe(III)Br2][Fe(III)Br4]has been prepared by self-assembly simply by adding anhydrous ferric chloride to a dichloromethane/methanol solution of dppf and 1,1,2,2-tetrabromoethane and then leaving to form a complex slowly. The key factor in the self-assembly is the addition of 1,1,2,2-tetrabromoethane which is the source of the bromide and is responsible for acid catalysed hydrolysis of ferric chloride.</p
Feminist Contentions: a Philosophical exchange [Review of: J. Butler (1996) Are We Getting Anywhere?]
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