Results 11 to 20 of about 51,316 (161)
ChemPlusChem, Volume 88, Issue 1, January 2023., 2023 Three major objectives of 17th century chemists were the preparation of proper chemicals, the preparation of herbal and inorganic medicines (iatrochemistry), and the making of gold by transmutation of lesser metals. The doctrines of Aristotle and Paracelsus that all things were made from the same, primary constituents, implied the feasibility of ...
Curt Wentrup
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Origins of Organic Chemistry and Organic Synthesis
European Journal of Organic Chemistry, Volume 2022, Issue 25, July 7, 2022., 2022 The origins of organic chemistry and organic synthesis started in the middle ages, long before molecular compositions were known. Paradigm shifts caused by Lavoisier, Chevreuil, Wöhler, Liebig, Kolbe and Berthelot are highlighted. The graphic shows some early key organic molecules, but although synthesis and analysis had become well established ...
Curt Wentrup
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AVONET: morphological, ecological and geographical data for all birds
Ecology Letters, Volume 25, Issue 3, Page 581-597, March 2022., 2022 Existing morphological trait datasets for major taxonomic groups are highly incomplete, limiting their utility to ecologists and evolutionary biologists. We present a global dataset containing comprehensive morphological information, coupled with ecological and geographical variables, for all bird species.
Joseph A. Tobias +115 more
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Revisiting a place‐based policy: Transformations in Northeast Brazil
Growth and Change, Volume 52, Issue 4, Page 2412-2436, December 2021., 2021 Abstract Despite being the second most populated region in Brazil, the Northeast has persistently accounted for a small share of national income. A well‐known attempt to develop the region was made in 1959 with the creation of SUDENE, a big push type of place‐based policy resulting in an intensification of industrial investments.
Solmaria Halleck Vega
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Plant Direct, Volume 5, Issue 10, October 2021., 2021 Abstract Developmental transitions are typically tightly controlled at the transcriptional level. Two of these transitions involve the induction of the embryo maturation program midway through seed development and its repression during the vegetative phase of plant growth.
Kevin A. Ruiz +9 more
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Classification of forest and shrubland vegetation in Mediterranean Turkey
Applied Vegetation Science, Volume 24, Issue 2, April/June 2021., 2021 Mediterranean Turkey comprises three vegetation belts: 1) thermo‐ and meso‐mediterranean, with coniferous (Pinus brutia, Pinus pinea) and sclerophyllous forests, as well as macchia, garrigue and phrygana (red dots), 2) supra‐mediterranean, with Pinus nigra, thermophilous oaks and Ostrya carpinifolia forests, and forests of temperate species (yellow ...
Ali Kavgacı +7 more
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Engenharia Agrícola, 2007 O trabalho teve como objetivo avaliar a tensão superficial estática de soluções aquosas com formulações de óleos minerais e vegetais emulsionáveis utilizados como adjuvantes na agricultura.
Cristina G. de Mendonça +2 more
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Transportes, 2022 O objetivo desta pesquisa foi analisar o comportamento de misturas asfálticas com material fresado, nos teores 0%, 30% e 60% e ligante modificado com óleo vegetal residual, nos teores 0%, 2% e 4%. Realizaram-se ensaios de viscosidade rotacional, além do
Paulo Roberto Barreto Torres +5 more
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Vigilância Sanitária em Debate: Sociedade, Ciência & Tecnologia, 2015 Alimentos processados por fritura são aceitos universalmente por diferentes grupos populacionais, porém, diante do aquecimento de óleo ou gordura, por tempo prolongado, o alimento é exposto à oxidação, devido às degradações na estrutura do óleo ou da ...
Lúcia Chaise Borjes +2 more
doaj +7 more sources
Revista de Agricultura Neotropical, 2018 Objetivou-se avaliar a tensão superficial e eficiência do espalhamento de gotas de soluções com herbicidas e adjuvantes em diferentes concentrações em folhas de Digitaria insularis.
Adriana Cologni Salvalaggio +4 more
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