152 research outputs found
Critérios técnicos para a seleção de pulverizadores autopropelidos comercializados no mercado brasileiro
Anatomia foliar, morfologia e aspectos ecolĂłgicos das espĂ©cies da famĂlia Amaranthaceae da Reserva Particular do PatrimĂŽnio Natural Cara Preta, em Alto ParaĂso, GO, Brasil
The development and validation of an ergonomics index for assessing tractor operator work place
Potencialidades da metacaolinita e do tijolo queimado moĂdo como substitutos parciais do cimento Portland
DISTRIBUIĂĂO ESPACIAL DO BICHO-FURĂO,Gymnandrosoma aurantiana (Lima, 1927)(LEPIDOPTERA: TORTRICIDAE),EM CITROS UTILIZANDO GEOESTATĂSTICA
Anålise econÎmica da produção de Acacia mearnsii De Wild e carvão vegetal no Vale do Caà e Taquari, Rio Grande do Sul
Valoraciones empĂrico-teĂłricas sobre los mĂ©todos de evaluaciĂłn de la transferencia de carga elĂ©ctrica en la soldadura con electrodo revestido
CorrelaçÔes e anålise de trilha de caracteres tecnológicos e a produtividade de fibra de algodão
The origins and development of Zuwīla, Libyan Sahara: an archaeological and historical overview of an ancient oasis town and caravan centre
ZuwÄ«la in southwestern Libya (FazzÄn) was one of the most important early Islamic centres in the Central Sahara, but the archaeological correlates of the written sources for it have been little explored. This paper brings together for the first time a detailed consideration of the relevant historical and archaeological data, together with new AMS radiocarbon dates from several key monuments. The origins of the settlement at ZuwÄ«la were pre-Islamic, but the town gained greater prominence in the early centuries of Arab rule of the Maghrib, culminating with the establishment of an IbÄážÄ« state ruled by the dynasty of the BanĆ« KhaáčáčÄb, with ZuwÄ«la its capital. The historical sources and the accounts of early European travellers are discussed and archaeological work at ZuwÄ«la is described (including the new radiocarbon dates). A short gazetteer of archaeological monuments is provided as an appendix. Comparisons and contrasts are also drawn between ZuwÄ«la and other oases of the ash-SharqiyÄt region of FazzÄn. The final section of the paper presents a series of models based on the available evidence, tracing the evolution and decline of this remarkable site
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