Formulaire pratique des hôpitaux civils de Paris ou Recueil des prescriptions médicamenteuses employées par les médecins et chirurgiens de ces établissemens... /

Mode of access: Internet.

De l'enseignement des mathématiques dans les colléges, considéré sous le double point de vue des prescriptions réglementaires de l'université, et des principes fondamentaux de la science ...

Mémoire (A) couronné par l'Académie royale des sciences, belles-lettres et arts de Rouen.

Résumé des prescriptions réservées à la législation des états contractants par la Convention internationale sur le transport de marchandises par chemins de fer. 2. éd., octobre 1904. Zusammenstellung der Bestimmungen, welche im Internationalen Übereinkommen über den Eisenbahn-Frachtverkehr den Gesetzen und Reglementen in den Vertragsstaaten überlassen sind.

"Annexe au Bulletin des tranports internationaux par chemins de fer, 1904"...

The female physician : or, every woman her own doctress : wherein is summarily comprised, all that is necessary to be known in the cure of the several disorders to which the fair sex are liable; together with prescriptions in English ... /

Mode of access: Internet.

A dictionary of practical medicine: comprising general pathology, the nature and treatment of diseases... with numerous prescriptions... a classification of diseases... a copious bibliography, with references; and an appendix of approved formulae.../ by James Copland...

Mode of access: Internet.

Incompatibilities in prescriptions.

Mode of access: Internet.

The new London practice of physic, pointing out the characters, causes, and symptoms, of the various diseases to which the human body is liable; and the most approved method of treatment, with prescriptions according to the nomenclature of the New Pharmacopoeia.

Earlier ed. issued under title: The modern practice of physic.

Medical instructions towards the prevention and cure of chronic diseases peculiar to women ... : for the use of those affected by such diseases, as well as the medical reader : to which are added, prescriptions, or efficacious forms of medicine in English, adapted to each disease /

Vol. 2 first published separately in 1772.

The house-keeper's pocket-book; and compleat family cook. Containing above seven hundred curious and uncommon receipts ... Concluding with many excellent prescriptions ... extracted from the writings of the most eminent physicians

Mode of access: Internet.

A PbS quantum-cube: conducting polymer composite for photovoltaic applications

We have developed a new non-polar synthesis for lead sulfide (PbS) quantum-cubes in the conjugated polymer poly-2-methoxy, 5-(2-ethyl-hexyloxy-p-phenylenevinylene) MEH-PPV. The conducting polymer acts to template and control the quantum-cube growth. Transmission electron microscopy of the composites has shown a bimodal distribution of cube sizes between 5 and 15 nm is produced with broad optical absorption from 300 to 650 nm. Photoluminescence suggests electronic coupling between the cubes and the conducting polymer matrix. The synthesis and initial characterization are presented in this paper. (C) 2003 Elsevier B.V. All rights reserved.

Evidence for energy relaxation via a radiative cascade in surface-passivated PbS quantum dots

Multiple emission peaks have been observed from surface passivated PbS nanocrystals displaying strong quantum confinement. The emission spectra are shown to be strongly dependent on the excited-state parity. We also find that intraband energy relaxation from initial states excited far above the band-edge is nearly three orders of magnitude slower than that found in other nanocrystal quantum dots, providing evidence of inefficient energy relaxation via phonon emission. The initial-state parity dependence of the photoluminescent emission properties suggests that energy relaxation from the higher excited states occurs via a radiative cascade, analogous to energy relaxation in atomic systems. Such radiative cascade emission is possible from ideal zero-dimensional semiconductors, where electronic transitions can be decoupled from phonon modes.

Direct observation of mixed-parity excited states in surface-passivated PbS nanocrystals

Photoluminescent emission is observed from surface-passivated PbS nanocrystals following the two-photon excitation of high-energy excitonic states. The emission appears directly at the excitation energy with no detectable Stokes-shift for a wide range of excitation energies. The observation of direct emission from states excited by two-photon absorption indicates that the parity of the excited states of surface-passivated PbS nanocrystals is partially mixed.

Controlling PbS nanocrystal aggregation in conducting polymers

PbS nanocrystals were synthesized directly in the conducting polymer, poly (3 -hexylthiophene-2,5-diyl). Transmission electron microscopy shows that the PbS nanocrystals are faceted and relatively uniform in size with a mean size of 10 nm. FFT analysis of the atomic lattice planes observed in TEM and selected area electron diffraction confirm that the nanocrystals have the PbS rock salt structure. The synthesis conditions are explored to show control over the aggregation of PbS nanocrystals in the thiophene conducting polymer.

Carrier transport in PbS nanocrystal conducting polymer composites

In this letter we report the carrier mobilities in an inorganic nanocrystal: conducting polymer composite. The composite material in question (lead sulphide nanocrystals in the conducting polymer poly [2-methoxy-5-(2(')-ethyl-hexyloxy)-p-phenylene vinylene] (MEH-PPV) was made using a single-pot, surfactant-free synthesis. Mobilties were measured using time of flight techniques. We have found that the inclusion of PbS nanocrystals in MEH-PPV both balances and markedly increases the hole and electron mobilities-the hole mobility is increased by a factor of similar to 10(5) and the electron mobility increased by similar to 10(7) under an applied bias of 5 kV cm(-1). These results explain why dramatic improvements in electrical conductivity and photovoltaic performance are seen in devices fabricated from these composites.

Time-resolved photoluminescence spectroscopy of ligand-capped PbS nanocrystals

PbS nanocrystals are synthesized using colloidal techniques and have their surfaces capped with oleic acid. The absorption band edge of the PbS nanocrystals is tuned between 900 and 580 nm. The PbS nanocrystals exhibit tuneable photoluminescence with large non-resonant Stokes shifts of up to 500 mcV. The magnitude of the Stokes shift is found to be dependent upon the size of PbS nanocrystals. Time-resolved photoluminescence spectroscopy of the PbS nanocrystals reveals that the photouminescence has an extraordinarily long lifetime of 1 mus. This long fluorescence lifetime is attributed to the effect of dielectric screening similar to that observed in other IV-VI semiconductor nanocrystals.