Review ArticleOpen accessIn the abstractAbout Supersonic Flight and Mach 3 FlyingRelly Victoria Virgil PetrescuAerospace-BAC Concorde was a supersonic passenger aircraft. It was the result of a government treaty between the French and British governments, combining the efforts of Aerospace and British Aircraft Corporation. With only 20 aircraft built in total, the cost of the development phase was a major economic failure. In addition, Air France and British Airways were subsidized by the government … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 28 Aug 2020 · 8,934 accessesView PDFCite
Research ArticleOpen accessIn the abstractMercury Contamination within Protected Areas in the Brazilian Northern Amazon-Amapá StateRossana Venturieri, Marcelo Oliveira-da-Costa, Cecile Gama, Christoph Bernhard JasterMercury contamination is a long-standing environmental and social problem, notably in the Amazon. The widespread use of mercury in artisanal and small-scale gold mining has driven contamination of the environment and the people, threatening biodiversity, human health and livelihoods of traditional populations. Along the border area between Brazil and French Guiana, illegal gold mining is considered a critical threat to … …American Journal of Environmental Sciences, Vol. 13, Issue 1 · 17 Jan 2017 · 9,253 accessesView PDFCite
EditorialOpen accessIn the abstractThe Timeless Contribution of Rootstocks towards Successful Horticultural Farming: From Ancient Times to the Climate Change EraIoannis E. PapadakisGrafting is a horticultural practice by which living vegetative plant organs (root, stem and/or buds) of either the same genotype or, usually, different genotypes belonging to the same species, genus, subfamily and/or family, are tightly connected to each other to form a double-compound plant. In fact, it is a method of asexual (clonal-vegetative) propagation of plants. The basal part of … …American Journal of Agricultural and Biological Sciences, Vol. 11, Issue 4 · 16 Dec 2016 · 9,527 accessesView PDFCite
Research ArticleOpen accessIn the abstractQArabPro: A Rule Based Question Answering System for Reading Comprehension Tests in ArabicMohammed Akour, Sameer Abufardeh, Kenneth Magel, Qasem Al-RadaidehProblem statement: Extensive research efforts in the area of Natural Language Processing (NLP) were focused on developing reading comprehension Question Answering systems (QA) for Latin based languages such as, English, French and German. Approach: However, little effort was directed towards the development of such systems for bidirectional languages such as Arabic, Urdu and Farsi. In general, QA systems are more … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 14 Jun 2011 · 7,704 accessesView PDFCite