Results 1 to 10 of about 19,710 (216)
Modelling of wave climate and sediment transport patterns at a tideless embayed beach, Pirita Beach, Estonia [PDF]
Journal of Marine Systems, 2008 Nearshore sand transport patterns along the tideless, embayed Pirita beach, Tallinn, Estonia, have been investigated utilizing high-resolution modelling of wave processes combined with bathymetric surveys and sediment textural analyses of the nearshore ...
Tarmo Soomere
exaly +3 more sources
Adsorção de xantatos sobre pirita [PDF]
Quimica Nova, 2001 This paper presents a study of adsorption of xanthate with alkyl chain of two (C2XK), four (C4XK) and eight (C8XK) atoms of carbon, on pyrite from Santa Catarina, Brazil. The results showed that pyrite surface changes from hydrophilic to hydrophobic when xanthate is adsorbed increasing the contact angle to 35o for C2XK, and to 90o for C4XK and C8XK ...
Nito Angelo Debacher
exaly +4 more sources
BENEFICIAMENTO DE PIRITA PROVENIENTE DA MINERAÇÃO DE CARVÃO [PDF]
Anais do Congresso Brasileiro de Engenharia Química em Iniciação Científica - Cobeq IC 2015, 2015 RESUMO – A pirita e um mineral de ampla ocorrencia na natureza e encarada como rejeito quando proveniente da extracao de carvao. Elevar seu grau de pureza fortalece a possibilidade de transforma-la em um subproduto de maior valor agregado. Neste sentido, sugere-se uma rota de beneficiamento do rejeito piritoso do sul de Santa Catarina (Brasil), baseada
C. M. de OLIVEIRA +2 more
exaly +2 more sources
Consumo de cianuro de concentrado de pirita aurifera, empleando ozono como pretratamiento
Epistemus, 2022 La pirita (FeS2) es el segundo mineral huésped más común de las especies de oro. Esta asociación presenta una complejidad diversa, ya que el oro puede encontrarse finamente diseminado ó incluido a tamaño muy fino (0.1 a 1.0 µm), por lo que requieren ...
Carolina de Jesús Rodriguez-Rodriguez +4 more
doaj +2 more sources
Transport and distribution of bottom sediments at Pirita Beach
Estonian Journal of Earth Sciences, 2007 The basic factors affecting sediment supply for and transport processes at Pirita Beach, a sandy section of the southeastern coast of Tallinn Bay, are analysed. Observations of bathymetry, sediment properties and sources, sediment transport processes and their changes arising from coastal engineering activities are reported.
Soomere, Tarmo +3 more
exaly +2 more sources
REDUCCION DEL OXIGENO SOBRE CALCOSITA, PIRITA Y GALENA EN MEDIO ALCALINO
Journal of the Chilean Chemical Society, 2000 La electroreduccion del oxigeno fue investigada a pH = 14 sobre electrodos de calcosita, pirita y galena mediante voltamperometria ciclica y por voltamperometria estacionaria usando una celda electroquimica de flujo de doble canal (CEFDC). La superficie de los electrodos fue caracterizada mediante consideraciones termodinamicas y cineticas. En todos lo
ORTIZ, JUAN +2 more
exaly +3 more sources
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2023 En este trabajo, fueron oxidadas secciones pulidas de muestras relativamente puras de pirita y calcopirita, tomadas de las minas de oro San Antonio (Marmato, Caldas) y La Chorrera (Cisneros, Antioquia).
Marco Antonio Márquez Godoy +3 more
doaj +1 more source
AVALIAÇÃO PRELIMINAR DO POTENCIAL DA PIRITA PARA GERAÇÃO DE ENERGIA [PDF]
Blucher Chemical Engineering Proceedings, 2017 K. G. SANTOS +5 more
exaly +2 more sources
Organising a Digital Storytelling workshop in a HEI setting
Il Capitale Culturale: Studies on the Value of Cultural Heritage, 2023 Organising a Digital Storytelling (DST) workshop in a heigher education institution (HEI) setting does not require specialised digital media labs or professional video editing software, but it does need careful planning and experienced workshop ...
Pirita Juppi
doaj +1 more source
OTEPÄÄ PIISKOPILINNUSE HÄVIMISDAATUMIST KIRJALIKE JA ARHEOLOOGILISTE ALLIKATE VALGUSES; pp. 72–78 [PDF]
Eesti Arheoloogiaajakiri, 2010 On antud ülevaade keskaegse Otepää linnuse hävimisdaatumi kohta püstitatud hüpoÂteeÂsidest ja vaadeldud kriitiliselt Otepää piiskopilinnuse uurijate esitatud teooriaid kirjalike allikate ning arheoloogiliste leidude valguses.
Jaak Mäll
doaj +1 more source