La théorie des sources des obligations : éclatement d'une classification

Un résumé en anglais est également disponible.

History pictures : using visual sources to build better history lessons.

Constituye una guía práctica sobre la utilización de las fuentes visuales en las clases de historia en la etapa 3 (key stage 3) y en el General Certificate Secondary Education (GCSE). Además, proporciona técnicas para animar a los alumnos a observar con detenimiento y a saber utilizar las imágenes para investigar en las interpretaciones históricas, entre estas imágenes se encuentran las caricaturas políticas. Incluye actividades en hojas de recursos para fotocopiar.

Preferential dust sources: a geomorphological classification designed and for use in global aerosol models

We present a simple theoretical land-surface classification that can be used to determine the location and temporal behavior of preferential sources of terrestrial dust emissions. The classification also provides information about the likely nature of the sediments, their erodibility and the likelihood that they will generate emissions under given conditions. The scheme is based on the dual notions of geomorphic type and connectivity between geomorphic units. We demonstrate that the scheme can be used to map potential modern-day dust sources in the Chihuahuan Desert, the Lake Eyre Basin and the Taklamakan. Through comparison with observed dust emissions, we show that the scheme provides a reasonable prediction of areas of emission in the Chihuahuan Desert and in the Lake Eyre Basin. The classification is also applied to point source data from the Western Sahara to enable comparison of the relative importance of different land surfaces for dust emissions. We indicate how the scheme could be used to provide an improved characterization of preferential dust sources in global dust-cycle models.

Classification of crucifer cultivars based on the life-history of diamondback moth (Plutella xylostella)

We compared different cultivars and hybrids of crucifers in relation to development and life-history of diamondback moth (Plutella xylostella) to classify the plants according to their resistance to the pest. The plants used were Manteiga da Geórgia kale, Bola de Neve cauliflower, Ramoso Piracicaba Precoce broccoli, Chato-de-quintal cabbage, and the hybrid cabbages Midori, TPC668, TPC308, and TPC681. We evaluated performance daily until the pupal stage. Pupae were assessed individually to determine the pupal weight, performance, and pupal period. We determined the sex ratio, fecundity, fertility, and longevity of the emerged adults and calculated their reproductive potential. Cabbage hybrids TPC668, TPC308, and TPC681 do not support the development and reproduction of the diamondback moth. These hybrids show a level of resistance that is similar to that found the commercially available hybrid Midori and cultivar Chato de Quintal, which are known to be resistant to the diamondback moth. This finding implies that the capitata (cabbage) cultivars are the most suitable for planting because they are more resistant to pest than the cultivar's moth, acephala (kale). © 2013 Copyright Taylor and Francis Group, LLC.

Polycyclic aromatic hydrocarbons (PAHs) in a large South American industrial coastal area (Santos Estuary, Southeastern Brazil): Sources and depositional history

Located in southeastern Brazil, the Santos Estuary has the most important industrial and urban population area of South America. Since the 1950`s, increased urbanization and industrialization near the estuary margins has caused the degradation of mangroves and has increased the discharge of sewage and industrial effluents. The main objectives of this work were to determine the concentrations and sources of polycyclic aromatic hydrocarbons (PAHs) in sediment cores in order to investigate the input of these substances in the last 50 years. The PAHs analyses indicated multiple sources of these compounds (oil and pyrolitic origin), basically anthropogenic contributions from biomass, coal and fossil fuels combustion. The distribution of PAHs in the cores was associated with the formation and development of Cubatao industrial complex and the Santos harbour, waste disposal, world oil crisis and the pollution control program, which results in the decrease of organic pollutants input in this area. (C) 2011 Elsevier Ltd. All rights reserved.

An inquiry into the sources of the history of the Jews in Spain

by Joseph Jacobs

A history of Rhodesia : compiled from official sources

by Howard Hensman

The history of freemasonry : its antiquities, symbols, constitutions, customs, etc., derived from official sources throughout the world /

Volume 1 with added illustrated title page.

History of Mohammedanism, and its sects; derived chiefly from oriental sources.

Mode of access: Internet.

Abe Lincoln's jokes : wit and humor, yarns and stories, history--chronology, gathered from authentic sources.

Original ed. under: Max Stein, ed.

History of the expedition under the command of Captains Lewis and Clarke, to the sources of the Missouri ... : performed during the years 1804, 1805, 1806, by order of the government of the United States /

The chapter on natural history (1st edition, v. 2, chapter 7) is in this edition transferred to the appendix. In this appendix the Estimate of the western Indians is given under the heading: "Enumeration of Indian nations and their places of general residence."

Classification. Class D. Subclasses DT-DX. History of Africa, Australia, New Zealand, etc. /

Mode of access: Internet.