10,157 research outputs found
GaAs(111) A and B surfaces in hydrazine sulfide solutions: Extreme polarity dependence of surface adsorption processes
No full textChemical treatment by hydrazine-sulfide solutions, known to produce surface nitridation of GaAs(100), was applied to GaAs(111)A and B surfaces. The chemistries of these treatments for the Ga-terminated A surface and the As-terminated B one were investigated using synchrotron radiation photoemission and Auger electron spectroscopies. For the B surface, such treatment was found to produce an effective surface nitridation, via substitution of surface arsenic with nitrogen atoms from hydrazine molecules. The process automatically stops after formation of one monolayer. In contrast, the A surface is covered by sulfur bonded to underlying gallium. This extreme dependence on surface polarity is explained by competitive adsorption processes of H S- and O H- anions and of hydrazine molecules, on Ga-adsorption sites, which have distinct configurations on the A and B surfaces
Doyle & Harrell
No full textGeneral John P. Doyle "talks it over" with Dick Harrell. One black and white photograph
Clean reconstructed InAs(111) A and B surfaces using chemical treatments and annealing
No full textWell-ordered clean InAs(111) A and B surfaces have been prepared using HCl-isopropanol solutions and characterized using low-energy electron diffraction and photoemission spectroscopy. The as-treated surfaces are covered by a layer containing arsenic and small amounts of InClx. Annealing induces desorption of the overlayer and reveals (2 x 2) and (1 x 1) structures on the A and B surfaces, respectively. For both surfaces, the surface components of the In 4d and As 3d reveal a charge transfer from the electropositive surface indium to the electronegative surface arsenic. The major advantage of this preparation method over conventional thermal cleaning is a significant reduction in the annealing temperature (approximate to 250 degrees C) thereby avoiding anion evaporation. (C) 2008 Elsevier B.V. All rights reserve
The relationship between Ford, Kipling, Conan Doyle, Wells and British propaganda of the First World War
No full textPhDThis thesis resituates the war-writing of Ford Madox Ford, Rudyard Kipling, Arthur
Conan Doyle and H.G. Wells in relation to official British propaganda
produced during the First World War. Examining these authors' institutional
connections with propaganda that was authorised by the British government locates
some of their texts within a network of materials that were deployed to justify
Britain's involvenlent in the war. The British government, via the War Propaganda
Bureau, approached major literary figures to assist in its plan to compete
vigorously with Germany to win American support. Positioning Ford's condemnation
of Prussian culture within this institutional context reveals that his officially
commissioned books functioned as a part of the larger yet-covert government
project to influence American intellectual opinion. Although wary that Kipling's
chauvinism might offend some readers, the British government reprinted and
distributed his denunciations of the 'Hun'. Kipling was given access to censored
letters from Indian soldiers in order to assist him in depicting the Imperial forces as
united. The result, The Eyes of Asia (1918), was a set of fictional texts by Indian
soldiers celebrating French and English civilisation in contrast to German barbarism.
In addition to official propaganda, these authors produced pro-war stories, poems, and
articles independent of direct government commission. Conan Doyle's formal call for
men to volunteer to defend their country, and his public denunciations of German
atrocities, were followed by his recruitment of Sherlock Holmes to repel a possible
German invasion ("His Last Bow" (1917)). Adding to his support for the war in his
journalism and war-time fiction, Wells was appointed the Head of Enemy Propaganda
for the newly formed Ministry of Information. He resigned almost immediately
following disagreements over government strategy. This project situates historically
and examines critically these authors' differing roles in relation to British propaganda
efforts during the First World War
"Through the windows of a Baptist Meeting House": Religion, politics and the Nonconformist Conscience in the life of Sir George White, M.P.
No full textWith the compilation of the New Dictionary of National Biography, under the
general editorship of Colin Matthew, the contributions of many more of the Free
Church men and women who helped shape nineteenth and twentieth-century Britain
will be acknowledged. Among the debutants in the revised canon of great Britons
will be Sir George White MP, 1 the man described by the British Weekly as the
'foremost lay leader of English Nonconformity in our generation' ,2 yet a politician
largely ignored by historians of Edwardian Britain.3 This is a significant oversight,
for White featured prominently in Free-Church politics in the early twentieth
century, chairing the Nonconformist Committee in the House of Commons and
acting as a bridge between old-style dissenting Radicalism and the new(er)
Liberalism of practical politicians like Lloyd George.4 Although 'plain and modest'
with 'no pretentions to brilliance', White reached the top in business, politics and
the Baptist denomination through the classic Victorian virtues of hard work,
dedication and devotion,S his success resting, in part, on his power as a speaker
with 'the enviable faculty granted to the best speakers of saying, and thinking clearly
and strongly while he is on his feet,.6 This paper, which is based primarily on
press reports of his life and death, will outline White's achievements in religion,
business and politics, illustrating the way these elements interacted, and looking, in
particular, at the three areas in which religion most obviously influenced his political
views: class relations, education and temperance
Activation parameters for the reaction of phenylchloro carbene with pyridine, tri- n -butyltin hydride, and triethylsilane; evidence against the need to invoke reversibly formed complexes in the reaction of this carbene with olefins
No full textPT: J; CR: CALDIN EF, 1964, FAST REACTIONS SOLUT, CH1 DOYLE MP, UNPUB TETRAHEDRON LE GIESE B, 1978, ANGEW CHEM INT EDIT, V17, P595 GIESE B, 1980, ANGEW CHEM INT EDIT, V19, P835 GIESE B, 1980, LIEBIGS ANN CHEM, P725 GIESE B, 1981, CHEM BER, V114, P3306 GIESE B, 1982, ANGEW CHEM INT EDIT, V21, P310 GOULD IR, 1985, TETRAHEDRON, V41, P1587 HOUK KN, 1984, J AM CHEM SOC, V106, P4291 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 JACKSON JE, 1988, IN PRESS J AM CHEM S, V110 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 PLATZ MS, 1983, TETRAHEDRON LETT, V24, P4763 SCAIANO JC, 1988, CHEM KINETICS SMALL, P73 SKELL PS, 1969, J AM CHEM SOC, V91, P7131 SOUNDARARAJAN N, 1988, IN PRESS J AM CHEM S, V110 TURRO NJ, 1987, J AM CHEM SOC, V109, P4973 WEAST RC, 1970, HDB CHEM PHYSICS, F42 ZUGRAVESCU I, 1976, N YLID CHEM; NR: 20; TC: 36; J9: TETRAHEDRON LETT; PG: 4; GA: T9526Source type: Electronic(1
Reactivity and selectivity in intermolecular insertion reactions of chlorophenylcarbene
No full textPT: J; CR: DOYLE MP, 1987, CHEM DIAZIRINES, CH8 DOYLE MP, 1987, J ORG CHEM, V52, P1619 GOULD IR, 1985, TETRAHEDRON, V41, P1587 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 KIRMSE W, 1964, CARBENE CHEM MOSS RA, 1985, REACTIVE INTERMEDIAT, V3, CH3 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 PADWA A, 1969, J ORG CHEM, V34, P2728 SEYFERTH D, 1967, J ORGANOMET CHEM, V7, P405 SEYFERTH D, 1968, J AM CHEM SOC, V90, P2944 SEYFERTH D, 1970, J ORG CHEM, V35, P1989 SEYFERTH D, 1973, J AM CHEM SOC, V75, P6763 SOUNDARARAJAN N, IN PRESS J AM CHEM S STANG PJ, 1987, J AM CHEM SOC, V109, P5019 STEINBECK K, 1978, TETRAHEDRON LETT, P1103 STEINBECK K, 1981, ANGEW CHEM INT EDIT, V20, P773; NR: 16; TC: 18; J9: TETRAHEDRON LETT; PG: 4; GA: R2217Source type: Electronic(1
Double metamagnetic transition in Sr4 Ru3 O10
No full textWe report a magnetization study down to 1.7 K for the trilayered ruthenate Sr4Ru3O10 for magnetic fields applied within the ab plane. Our measurements reveal that the metamagnetic jump appearing in the isothermal magnetization curves below TM=68 K is actually composed of two consecutive metamagnetic transitions, where the increase in the magnetization due to the second transition is roughly one third of the overall metamagnetic jump. We show that the metamagnetic critical fields for these two transitions increase as the temperature decreases, and that their difference has a weak temperature dependence that opens up in the proximity of the critical region near TM. We discuss the origin of this double metamagnetic transition being due to either the ordering of the Ru 4d magnetic moments in the two inequivalent crystallographic Ru sites or to the presence of two van Hove singularities in the near-Fermi-level density of states
Addition of arylchlorocarbenes to .alpha.,.beta.-unsaturated esters. Absolute rates, substituent effects, and variable reactivities
No full textPT: J; CR: BALASUBRAMANIYA.V, 1983, TETRAHEDRON, V39, P1475 BEENS H, 1967, J CHEM PHYS, V47, P1183 BERSON JA, 1974, J AM CHEM SOC, V96, P6175 BERSON JA, 1974, J AM CHEM SOC, V96, P6177 BOWMAN RM, 1974, J AM CHEM SOC, V96, P692 BROWN WG, 1966, J AM CHEM SOC, V88, P233 CALDWELL RA, 1978, J AM CHEM SOC, V100, P2905 COX DP, 1983, TETRAHEDRON LETT, V24, P5313 CREED D, 1976, J AM CHEM SOC, V98, P621 DEHMLOW EV, 1984, ANGEW CHEM INT EDIT, V23, P706 DOYLE MP, 1984, TETRAHEDRON LETT, V25, P901 DOYLE MP, 1986, TETRAHEDRON LETT, V27, P4395 DOYLE MP, 1987, CHEM DIAZIRINES, CH8 GILBERT WI, 1939, J ORG CHEM, V3, P611 GORDON M, 1975, EXCIPLEX GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 HUISGEN R, 1963, ANGEW CHEM INT EDIT, V2, P633 KNIBBE H, 1967, J CHEM PHYS, V47, P184 KWIE WW, 1963, TETRAHEDRON LETT, P405 LAMBERT JB, 1983, TETRAHEDRON LETT, V24, P3799 LEONHARDT H, 1963, BER BUNSEN PHYS CHEM, V63, P791 LIU MTH, 1987, CHEM DIAZIRINES, CH5 LIU MTH, 1987, J ORG CHEM, V52, P323 LIU MTH, 1987, J ORG CHEM, V52, P4223 LIU MTH, 1987, TETRAHEDRON LETT, V28, P1011 LOUTFY RO, 1969, J AM CHEM SOC, V91, P3984 MOSS RA, 1967, TETRAHEDRON LETT, P4905 MOSS RA, 1969, J ORG CHEM, V34, P2220 MOSS RA, 1970, J AM CHEM SOC, V92, P6951 MOSS RA, 1977, J AM CHEM SOC, V99, P4105 MOSS RA, 1979, J AM CHEM SOC, V101, P5088 MOSS RA, 1979, TETRAHEDRON LETT, P4721 MOSS RA, 1980, ACCOUNTS CHEM RES, V13, P58 MOSS RA, 1985, REACTIVE INTERMEDIAT, V3, CH3 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 MOSS RA, 1987, TETRAHEDRON LETT, V28, P4779 NAZAKI K, 1941, J AM CHEM SOC, V63, P2585 OKADA T, 1968, J CHEM PHYS, V49, P4717 RONDAN NG, 1980, J AM CHEM SOC, V102, P1770 SAKAI M, 1977, B CHEM SOC JP, V50, P1232 SAUER J, 1967, ANGEW CHEM INT EDIT, V6, P16 SCHOELLER WW, 1982, ANGEW CHEM INT ED EN, V12, P932 SKELL PS, 1969, J AM CHEM SOC, V91, P7131 TANIGUCHI Y, 1972, CHEM PHYS LETT, V13, P596 TURRO NJ, 1980, J AM CHEM SOC, V102, P7578 TURRO NJ, 1982, J AM CHEM SOC, V104, P1754 TURRO NJ, 1987, J AM CHEM SOC, V109, P4973 VAN SP, 1978, J AM CHEM SOC, V100, P3895 YANG NC, 1968, J AM CHEM SOC, V90, P5654; NR: 51; TC: 66; J9: J AMER CHEM SOC; PG: 10; GA: Q6555Source type: Electronic(1
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