Behavioural responses by yaks in different physiological states (lactating, dry or replacement heifers), when grazing natural pasture in the spring (dry and germinating) season on the Qinghai-Tibetan plateau

Using heterogeneous vegetation in alpine grassland through grazing is a necessary component of deintensification of livestock systems and conservation of natural environments. However, better understanding of the dynamics of animal feeding behaviour would improve pasture and livestock grazing managements, particularly in the early part of the spring season when forage is scarce. The changes in behaviour may improve the use of poor pastures. Then, enhancing management practices may conserve pasture and improve animal productivity. Grazing behaviour over 24 In periods by yaks in different physiological states (lactating, dry and replacement heifers) was recorded in the early, dry and later, germinating period of the spring season. Under conditions of inadequate forage, the physiological state of yaks was not the primary factor affecting their grazing and ruminating behaviour. Forage and sward state affected yaks' grazing and ruminating behaviour to a greater extent. Generally, yaks had higher intake and spent more time grazing and ruminating during the later part of the spring season, following germination of forage, than during the earlier dry part of the season. However, the live weight of yaks was less during pasture germination than during the early dry part of the season because the herbage mass is low, and the yaks have to expend much energy to seek feed at this particular time. (c) 2007 Elsevier B.V. All rights reserved.

Lewis acid assisted ring-closing metathesis of chiral diallylamines: An efficient approach to enantiopure pyrrolidine derivatives

Lewis acid assisted ring-closing olefin metathesis (RCM) of chiral diallylamines, using the second generation RCM ruthenium-based catalyst, leads to enantiopure pyrrolidine derivatives in 79-93% yields under very mild conditions. The scope of the olefin metathesis has been expanded.

Utiliza����o de interpoladores na gera����o de grades do Spring para elabora����o de modelos num��ricos de terreno utilizando dados de fertilidade do solo.

Considera����es b��sicas: A amostragem; A confec����o de grades; O produto. Esquema do processo do modelo num��rico de terreno do Spring.

Sistema de informa��oes geogr��ficas - SIG/SPRING para modelagem e espacializa����o de dados de fertilidade do solo.

Geoprocessamento. Sistema de informa����es geogr��ficas - SIG / SPRING. Esquema operacional. Cria����o e manipula����o do bancos de dados. Cria����o do plano de informa����o - PI. Escolha do modelo de dados. Imagens. Modelo Num��rico de Terreno - MNT. Grades regulares. Fatiamento. Objeto. Mapa cadastral. Redes. Tem��tica.

Uso do m��dulo "An��lise" do Spring (vers��o 3.6.02) para estudo de dados clim��ticos.

An��lise espacial.

Cartografia ao milion��simo dos solos dos munic��pios brasileiros utilizando o m��dulo SCarta do SPRING e proposta de acesso para a Internet.

Os Sistemas de Informa����o Geogr��fica (SIG) promoveram uma revolu����o nas opera����es de armazenamento e manipula����o de informa����es espaciais e a Internet fomenta a atividade de dissemina����o desse tipo de informa����o para um p��blico mais numeroso, heterog��neo e com diferentes interesses.

Un Bywyd o Blith Nifer: Cofiant Saunders Lewis, 1892-1985

Chapman, T. (2006). Un Bywyd o Blith Nifer: Cofiant Saunders Lewis, 1892-1985. Llandysul: Gwasg Gomer.

The Arab Spring as a Test of post-Lisbon Capabilities and Strategies of the European Union in North Africa

This study aims to present the conditions related to the European Union���s involvement in the Arab Spring, as well as examine the extent of this capability-based involvement in the first months of 2011 against the background of competence disputes between institutions and inter-governmental contentions. These considerations will be the basis for conclusions on the theoretical and practical viability of the European Union���s action in the region of North Africa, in terms of both interests defined in Brussels and representation of a jointly agreed position and undertaking practical actions in the international arena. These assumptions can facilitate a new perspective for the EU���s strategic approach framework in the region of North Africa.

Discourses Commemorative of Professor Tayler Lewis and Professor Isaac W. Jackson

Discourses

An Englishwoman's twenty-five years in tropical Africa: being the biography of Gwen Elen Lewis, missionary to the Cameroons and the Congo, by George Hawker

http://www.archive.org/details/anenglishwomanst00hawkuoft

The life and work of the Rev. E.J. Peck among the Eskimos / by Arthur Lewis.

http://www.archive.org/details/lifeandworkofrev00lewiiala

A mathematical description of the acoustic coupling of the mass/spring model

This paper describes hybrid mathematical model which couples the mechanics of the mass/spring model to the acoustic wave propagation model for use in generating the acoustic signal emitted by complex structures of paper fibres under strain. A discussion of the coupling method is presented including remarks on the errors encountered intrinsic to the discretisation scheme. The numerical results of a vibrating rubber band and a vibrating paper fibre are compared to their experimental counterparts. The fundamental frequencies of the acoustic signals are compared showing a close agreement between the experimental and numerical results