Study directed at development of an implantable biotelemetry ion detector

A literature search was conducted to currently update known information in the field of ion-selective electrodes. The review attempts to identify present trends in cation and anions selective electrodes pertinent to the area of bioimplantable units. An electronic circuit was designed to provide the high impedance interface between the ion-selective sensors and signal-processing equipment. The resulting design emphasized the need for low power and miniaturization. Many of the circuits were constructed and used to evaluate the ion-selective electrodes. A cuvette capable of holding the ion-selective and the reference electrodes was designed and constructed. This equipment was used to evaluate commercially available ion-selective electrodes and the electrodes designed and constructed in the study. The results of the electrode tests are included

Double Switch With Hemi-Mustard and Bidirectional Glenn Procedure for “Anatomical” Repair of Corrected Transposition

Numeración errónea en el original

System data communication structures for active-control transport aircraft, volume 2

The application of communication structures to advanced transport aircraft are addressed. First, a set of avionic functional requirements is established, and a baseline set of avionics equipment is defined that will meet the requirements. Three alternative configurations for this equipment are then identified that represent the evolution toward more dispersed systems. Candidate communication structures are proposed for each system configuration, and these are compared using trade off analyses; these analyses emphasize reliability but also address complexity. Multiplex buses are recognized as the likely near term choice with mesh networks being desirable for advanced, highly dispersed systems

System data communication structures for active-control transport aircraft, volume 1

Candidate data communication techniques are identified, including dedicated links, local buses, broadcast buses, multiplex buses, and mesh networks. The design methodology for mesh networks is then discussed, including network topology and node architecture. Several concepts of power distribution are reviewed, including current limiting and mesh networks for power. The technology issues of packaging, transmission media, and lightning are addressed, and, finally, the analysis tools developed to aid in the communication design process are described. There are special tools to analyze the reliability and connectivity of networks and more general reliability analysis tools for all types of systems

A fault-tolerant multiprocessor architecture for aircraft, volume 1

A fault-tolerant multiprocessor architecture is reported. This architecture, together with a comprehensive information system architecture, has important potential for future aircraft applications. A preliminary definition and assessment of a suitable multiprocessor architecture for such applications is developed

The political thought of Romain Rolland and its place in his work

This thesis begins with an examination of the religious thought of Romain Rolland, showing how he derived an ethic of human solidarity that is fundamental to his later theorising about society and politics. The main sources of Rolland's ethic are indicated, and an attempt is made to set it in the context of modern French philosophy. Having established this base, the thesis goes on to examine chronologically the development of Holland's thought about politics, having as its central premise the notion that it is Rolland's search for a political system which would give full expression to his ideal of human solidarity that leads him towards various types of politics in turn. Several phases are distinguished in this evolution, starting with a period of vacillation between largely unformulated liberal beliefs and a violent, authoritarian style of politics, at the beginning of Rolland's adult life. We then take up his first involvement with socialism in the mid-1890's, his failure to elaborate a meaningful type of socialism in the context of his day, and his gravitation towards Darwinian and similar types of historical-political theorising; this phase culminates in the period of intense activity represented by Le Théâtre de la Révolution, coinciding with the Dreyfus case. Chapters V and VI deal with the period prior to 1914, dominated by Rolland's search for an 'internationalist' or European style of politics, and his analyses of national cultures and life-styles in Jean-Christophe: it is argued that this marks to some extent a regression from his previous socialistic preoccupations. Chapter VII shows Rolland's change of attitude during World War I, and his return to the conviction that social change was an absolute necessity in Europe. The next two chapters analyse Rolland's exploration of possible political bases for such a change, including such alternatives as Wilsonian internationalism, Gandhian non-violent protest and, eventually, Soviet Communism which, according to this thesis, Rolland accepted with slight reserve. The final chapter is retrospective, and aims to show how at key moments in Rolland's life, his artistic conception and execution was crucially shaped, if not determined by his political preoccupations. At all stages great attention is paid to the question of Rolland's intellectual sources and to putting his political thought firmly into the social and intellectual context of its day, rather than attempting to see it as an isolated phenomenon. To this end, numerous historical analyses and comparisons with contemporary figures are made

Historical wealth accounts for Britain : progress and puzzles in measuring the sustainability of economic growth

We thank the Leverhulme Trust for funding this research under the project ‘History and the Future’.Estimates of Britain's comprehensive wealth are reported for the period 1760-2000. They include measures of produced, natural, and human capital, and illustrate the changing composition of Britain's assets over this time period. We show how genuine savings, GS (a year-on-year measure of the change in total capital and a claimed indicator of sustainable development) has evolved over time. Changes in total wealth are compared to alternative, investment-based measures of GS, including variants augmented with the value of exogenous technology. Additionally, the possible effects of population change on wealth, and the implications of including carbon-dioxide emissions in natural capital are considered.PostprintPeer reviewe

Absolute absorption on the potassium D lines: theory and experiment

We present a detailed study of the absolute Doppler-broadened absorption of a probe beam scanned across the potassium D lines in a thermal vapour. Spectra using a weak probe were measured on the 4S $\to$ 4P transition and compared to the theoretical model of the electric susceptibility detailed by Zentile et al (2015 Comput. Phys. Commun. 189 162–74) in the code named ElecSus. Comparisons were also made on the 4S $\to$ 5P transition with an adapted version of ElecSus. This is the first experimental test of ElecSus on an atom with a ground state hyperfine splitting smaller than that of the Doppler width. An excellent agreement was found between ElecSus and experimental measurements at a variety of temperatures with rms errors $\sim {10}^{-3}$. We have also demonstrated the use of ElecSus as an atomic vapour thermometry tool, and present a possible new measurement technique of transition decay rates which we predict to have a precision of ~$3\;\mathrm{kHz}$

Photoresponse of PbS nanoparticles-quaterthiophene films prepared by gaseous deposition as probed by XPS

Cataloged from PDF version of article.Semiconducting lead sulfide (PbS) nanoparticles were cluster beam deposited into evaporated quaterthiophene (4T) organic films, which in some cases were additionally modified by simultaneous 50 eV acetylene ion bombardment. Surface chemistry of these nanocomposite films was first examined using standard x-ray photoelectron spectroscopy (XPS). XPS was also used to probe photoinduced shifts in peak binding energies upon illumination with a continuous wave green laser and the magnitudes of these peak shifts were interpreted as changes in relative photoconductivity. The four types of films examined all displayed photoconductivity: 4T only, 4T with acetylene ions, 4T with PbS nanoparticles, and 4T with both PbS nanoparticles and acetylene ions. Furthermore, the ion-modified films displayed higher photoconductivity, which was consistent with enhanced bonding within the 4T organic matrix and between 4T and PbS nanoparticles. PbS nanoparticles displayed higher photoconductivity than the 4T component, regardless of ion modification. (C) 2012 American Vacuum Society