Results 51 to 60 of about 1,134 (138)

Acabamento de têxteis multifuncionais com nanocompósitos poliméricos [PDF]

open access: yes, 2011
A funcionalização dos materiais têxteis pretende melhorar as propriedades existentes e criar novas potencialidades para novos campos de aplicação dos produtos.
Carneiro, Noémia   +2 more
core  

Modification of Montmorillonite by new surfactants. [PDF]

open access: yes, 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
core  

Morphology, structure and mechanical properties of polypropylene modified with organophilic montmorillonite

open access: yesPolímeros, 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
doaj  

Sedimentos marinhos : caracterização química expedita por espectrometria de fluorescência de raios X = Marine sediments : an easy-and-quick chemical characterization through X-ray fluorescence spectrometry [PDF]

open access: yes, 2010
Com o objectivo de obter dados químicos sobre sedimentos marinhos em tempo reduzido e por uma via expedita, desenvolveu-se uma metodologia analítica baseada em espectrometria de fluorescência de raios X por dispersão em comprimentos de onfa (FRX-DCO).
Figueiredo, M. Ondina   +2 more
core  

IN VITRO EVALUATION OF 5-FLUOROURACIL RELEASE BY MICROSPHERES BASED ON CHITOSAN / MONTMORILLONITE/ AVALIAÇÃO IN VITRO DA LIBERTAÇÃO DE 5-FLUOROURACIL POR MICROESFERAS À BASE DE QUITOSANO / MONTMORILONITE

open access: yesBrazilian 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

Transient seepage and slope stability analysis for rainfall induced landslide: a case study [PDF]

open access: yes, 2006
A transient seepage and slope stability analyses were carried out for a case of rainfall-induced landslide in Air Laya Indonesia . The landslide occurred in December 2002 on a dumping area of an open coal mining site.
Asof, Marwan, Gofar, Nurly, Lee, Min Lee
core  

Eco-friendly technologies of leather manufacturing using natural minerals montmorilonite and zeolite

open access: yesTechnology 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

Estudo do assoreamento da Albufeira da Venda Nova [PDF]

open access: yes, 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
core  

DEPOSITS AND MINING POTENTIAL OF BENTONITE IN CROATIA

open access: yesRudarsko-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
doaj  

Caracterização de nanocompósitos de poliuretano/montmorilonita organofílica por RMN de baixo campo

open access: yesPolímeros
Poliuretanos são materiais poliméricos importantes e versáteis, principalmente devido a algumas de suas propriedades, como alta resistência à abrasão, resistência ao rasgo, excelente absorção de choques mecânicos, boa flexibilidade e elasticidade.
Marcos Anacleto da Silva   +3 more
doaj  

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