Results 31 to 40 of about 540 (170)
ChemistryEurope, Volume 4, Issue 5, May 2026.Systematic variation of the position and electronic effect of substituents within the benzannulated aromatic part of the HyperBTM catalyst framework indicates that catalysts containing electron‐donating substituents outperform their electron‐deficient variants in terms of rate and enantioselectivity in acylation reactions.
Kevin Kasten +8 more
wiley +1 more source
Angewandte Chemie, Volume 136, Issue 49, December 2, 2024.Under acidic conditions (TFA) and in the presence of water, BocNHOTs promotes stereospecific 1,2‐aminohydroxylations of alkenes. The processes involve intermolecular aza‐Prilezhaev aziridination followed by stereospecific SN2‐like opening by water.
Wenbin Tu +3 more
wiley +2 more sources
Estoque e frações de carbono orgânico e fertilidade de solo sob floresta, agricultura e pecuária
Revista Ceres, 2015 O entendimento dos fenômenos de trocas de carbono entre solo, água e atmosfera é fundamental para o manejo e a conservação de ecossistemas naturais e agrários.
Marihus Altoé Baldotto +3 more
doaj +1 more source
Revista Cerrados, 2023 O espaço geográfico apresenta transformações provenientes da relação sociedade/natureza, tornando-se foco de discussões no meio científico diante do intenso processo de degradação dos recursos naturais.
Cleonice Batista Regis Soares +1 more
doaj +1 more source
Environmental Policy and Governance, Volume 36, Issue 2, Page 253-262, April 2026.ABSTRACT The governance of shared water systems requires collaboration across diverse stakeholders. In this study we advance the theoretical understanding of asymmetric collective action problems (CAPs) by reassessing the role of third‐party interventions and emphasizing the strategic importance of policy brokers and institutional venues.
Anna Bendz, Simon Matti, Patrik Öhberg
wiley +1 more source
Principais gestos esportivos executados por jogadores de handebol
Revista Brasileira de Ciências do Esporte, 2012 Este estudo teve como objetivo quantificar os principais gestos esportivos executados por jogadores profissionais de handebol. Para a mensuração quantitativa dos principais movimentos executados por cada jogador de handebol avaliado foram realizadas ...
Luiz Carlos Hespanhol Junior +3 more
doaj +1 more source
Coeficiente de descarga em emissores de pivô central [PDF]
Engenharia Agrícola, 2015 Este trabalho foi desenvolvido com o objetivo de determinar, em condições laboratoriais, o coeficiente de descarga (Cd) dos emissores fixos tipo “spray” (Senninger, Nelson e Fabrimar) utilizados em equipamentos pivô central no Brasil.
Renato M. da Silva +3 more
doaj +1 more source
Food Risk Assess Europe, Volume 4, Issue 1, January 2026.Summary Lead is a ubiquitous environmental contaminant that occurs naturally and, to a greater extent, from anthropogenic activities. People are exposed to lead through food, water, air, soil and dust. Food is the major source of exposure for the adult population.
Vlatka Buzjak Služek +5 more
wiley +1 more source
Food Risk Assess Europe, Volume 4, Issue 1, January 2026.Summary Ochratoxin A (OTA) is a secondary metabolite primarily produced by moulds of the genera Aspergillus and Penicillium. It is most commonly found in foods of plant origin, such as cereals, wine, coffee, spices and various types of fruits and vegetables, green tea, pistachios, figs, raisins, grapes, wine and chestnuts, as well as beer, coffee ...
Sanja Miloš +5 more
wiley +1 more source
Statistička analiza sezonskih utjecaja na realizaciju piva "Pivovare" Osijek
Ekonomski Vjesnik, 1993 U radu su izučeni sezonski i rezidualni utjecaji na realizaciju poduzeća "Pivovara" Osijek. Analizirano je razdoblje od 1987. do 1992. godine metodom krivolinijskog trenda, s posebnim osvrtom na 1991. godinu.
Jasna Horvat, Zdravko Tolušić
doaj