Results 51 to 60 of about 1,155 (144)
O Pliocénico Marinho de Caldas da Rainha e de Pombal: sedimentologia e micropaleontologia: enquadramento paleogeográfico e paleoecológico [PDF]
, 1984 Com este trabalho, pretendiam-se atingir os seguintes objectivos: - Caracterização da idade dos depósitos, baseada nos Foraminíferos planctónicos. De facto, estas formações foram consideradas durante muito tempo como pertencentes ao Pliocénico inferior ...
Cardoso, João Luís
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Avaliação do impacte da drenagem de água ácida na hidrogeoquímica do rio Zêzere : o caso de estudo da mina da Panasqueira, Portugal [PDF]
, 2011 A mineralização hidrotermal da Panasqueira localiza-se no centro de Portugal e é o maior depósito de Sn-W da Europa Ocidental. A exploração mineira e as operações do tratamento do minério deram origem a escombreiras de grandes dimensões, principalmente,
Candeias, Carla +5 more
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Polímeros, 2012 The aim of this work is to study the properties of systems based on polypropylene (PP) and commercial organophilic montmorillonite, prepared by melt intercalation.
Ana R. Morales +3 more
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Brazilian Journal of Development, 2020 5-fluorouracil (5-FU) is one of the most widely used chemotherapeutic compounds for cancer treatment and its rapid metabolization and non-uniform oral absorption are the limitations for its use as an oral chemotherapy. Therefore, this study was performed to evaluate the influence of a 5-fluorouracil (5-FU) nanocomposite microspheres with different ...
Hanniman Denizard Cosme Barbosa +7 more
openaire +2 more sources
Modification of Montmorillonite by new surfactants. [PDF]
, 2009 The sodium Montmorillonite is not susceptible to polymer due to its organophobic character and has low basal spacing. This study reports on the effect of three new organic cations including Triethyl Amine (TEA), Tripropyl Amine (TPA) and Trioctyl Amine ...
Ahmad @ Ayob, Mansor +3 more
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Eco-friendly technologies of leather manufacturing using natural minerals montmorilonite and zeolite
Technology audit and production reserves, 2013 Considerable amount of information is known on the use of natural minerals as ion exchangers, sorbents, catalysts for solving environmental problems, wastewater treatment. However, papers on the use of minerals in the manufacture of leather as a material that can adjust and regulate the efficiency of the dermis structure formation and the relevant ...
openaire +2 more sources
Analisis Penggunaan Lumpur Pemboran pada Formasi Gumai Shale Sumur K-13, S-14 dan Y-6 Trayek 12 ¼” Cnooc Ses Ltd. [PDF]
, 2015 Salah satu permasalahan yang sering terjadi pada pemboran yaitu berkaitan terhadapformasi yang reaktif terhadap air, pada formasi tersebut penggunaan lumpur berbahandasar air dapat menyebabkan suatu masalah seperti swelling clay, hole pack off ...
Satyawira, B. (Bayu) +2 more
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Analisis Campuran Kapur-fly Ash Dan Kapur-abu Sekam Padi Terhadap Lempung Ekspansif [PDF]
, 2016 Frequently, expansive clay soil raise problem to the buildings lies on it. Concerning to this, there are many ways had be tried to resolve this expansive soil, where one of it is by stabilization using coal by product (fly ash) , rice husk and lime to ...
Jansen, F. (Fredy) +2 more
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Estudo do assoreamento da Albufeira da Venda Nova [PDF]
, 1986 Estuda-se o enchimento aluvionar processado no fundo da albufeira da barragem de Venda Nova, situada no rio Cávado, que motivou em parte o seu esvaziamento no ano de 1984, para limpeza dos orgãos de descarga.
Cardoso, João Luís
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DEPOSITS AND MINING POTENTIAL OF BENTONITE IN CROATIA
Rudarsko-geološko-naftni Zbornik, 2012 Bentonite is one of the materials that is planed to be used for buffering and backfilling in spent nuclear fuel repositories, within deep crystalline rock. There are several locations in Croatia that bentonite deposits and occurrences are found on.
Mario Klanfar , Branimir Janković
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