7,220 research outputs found
Double-layer correction for electron-transfer kinetics at glassy carbon and mercury electrodes in N,N-dimethylformamide
No full textThe double-layer properties of the glassy carbon electrode in N,N-dimethylformamide (DMF) containing
tetrabutylammonium perchlorate (TBAP) at different concentrations have been studied by cyclic voltammetry and
impedance. The results were compared with analogous results obtained for the mercury/DMF interface. For both
electrodes, the double-layer data were treated to obtain useful equations describing the dependence of the outer
Helmholtz plane potential on the applied potential. The kinetics of the dissociative reduction of a sulfide in DMF/
0.1 M TBAP was studied by convolution analysis on both glassy carbon and mercury and used as an example to test
the double-layer results and compare the behavior of the two electrodes
Electron transfer to sulfides and disulfides: Intrinsic barriers and relationship between heterogeneous and homogeneous electron-transfer kinetics
No full textThe electron-acceptor properties
of series of related sulfides and
disulfides were investigated in N,N-dimethylformamide
with homogeneous
(redox catalysis) and/or heterogeneous
(cyclic voltammetry and convolution
analysis) electrochemical techniques.
The electron-transfer rate constants
were determined as a function of the
reaction free energy and the corresponding
intrinsic barriers were determined.
The dependence of relevant
thermodynamic and kinetic parameters
on substituents was assessed. The kinetic
data were also analyzed in relation
to corresponding data pertaining
to reduction of diaryl disulfides. All investigated
reductions take place by
stepwise dissociative electron transfer
(DET) which causes cleavage of the
CalkylS or SS bond. A generalized
picture of how the intrinsic electrontransfer
barrier depends on molecular
features, ring substituents, and the
presence of spacers between the frangible
bond and aromatic groups was established.
The reduction mechanism
was found to undergo a progressive
(and now predictable) transition between
common stepwise DET and
DET proceeding through formation of
loose radical anions. The intrinsic barriers
were compared with available results
for ET to several classes of dissociative-
and nondissociative-type acceptors,
and this led to verification that
the heterogeneous and the homogeneous
data correlate as predicted by the
Hush theory
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Drumheller, AB
No full textNotes - A history of the Ursaline order in Drumheller, AB from 1935 to 1985 (2 pages)Drumhelle
Souvenir of Edmonton, AB
No full textBooklet - Souvenir of Edmonton - The Capital City of Alberta. Collection of photographs in a green cover tied with string, Edmonton, AB (48 pages
Ab initio pair potentials at metal-ceramic interfaces
No full textA systematic approach is proposed to obtain the interfacial interatomic potentials. By inverting ab initio adhesive energy curves for the metal-MgO ceramic interfaces, We derive interfacial potentials between Ag and O2-, Ag and Mg2+, Al and O2-, Al and Mg2+. The interfacial potentials, obtained from this method, demonstrate general features of bondings between metal atoms and ceramic ions
Perceptions of pre- and post-event impacts of PEI 2014 year-long celebrations
No full textThis study examines Canadian perceptions of pre- and post-event impacts of the PEI 2014 Celebrations using the 2013 and 2015 surveys of PEI residents and other Canadians conducted by the Centre for Tourism Research. Overall, results indicate that Canadians’ awareness of, knowledge about, and attitudes toward the 1864 Charlottetown Conference and the PEI 2014 Celebrations increased and positively changed over time. The research also suggests that event organizers and/or destination tourism managers need to put greater emphasis on the “socio-cultural aspects” of the event such as community participation and cultural identity, and make an effort to increase tourism volume and value in order to obtain strong support from residents and be successful
Ultra-low-power, class-AB, CMOS four-quadrant current multiplier
No full textA class-AB four-quadrant current multiplier constituted by a class-AB current amplifier and a current splitter which can handle input signals in excess of ten times the bias current is presented. The proposed circuit operation is based on the exponential characteristic of BJTs or subthreshold MOSFETs. The multiplier is designed using the latter devices and achieves very low power consumption. Simulation results show that from a 0.65 V supply, the proposed circuit consumes 12.4 nW static power while less than 30 dB total harmonic distortion is achieved for an input modulation index up to 10.Microelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Records of Empire, Monarchy, or Nation? The Archival Heritage of the Habsburgs in East Central Europe
No full textThis contribution to Ab Imperio's forum on the archives of empires examines the history of central government archives in the Habsburg Monarchy of East Central Europe from the sixteenth through twentieth centuries. The court, financial, and military archives in the imperial capital at first only served official purposes, but by the nineteenth century also supported historical research. Later the provinces and emerging national states also developed archives and made them accessible to historians. The multinational empire dissolved in 1918 and its successor states competed for possession of the central archives. National archives were considered essential for the creation of national states and histories
Osservazioni sopra un articolo inserito nella Biblioteca italiana nel quale si parla di due lettere del pre. ab. Gio. Battista Baizini sul musaico di Pompei.
No full textMode of access: Internet.Sloan candidateLibrary's c.2 bound in old green decorated boards; presentation inscription from the author on front pastedown.Library's c.1 bound with: Due lettere sopra il musaico di Pompei / del pre. ab. Gio. Battista Baizini (90-B31630 c.1
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