Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Dennys Reis"'
Publikováno v:
Materials, Vol 7, Iss 6, Pp 4132-4147 (2014)
Amino acid-based surfactants were used as the main surfactants to prepare new lyotropic mixtures presenting three nematic phases. One of them is biaxial (NB), and the two others are uniaxial, discotic (ND) and calamitic (NC). These surfactants were t
Externí odkaz:
https://doaj.org/article/cb20a11eb5c04c7abe0d6675d9be4b83
Autor:
Dennys Reis
Publikováno v:
Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.
Misturas liotrópicas de laurato de potássio (KL)/ sulfato de potássio (K2SO4)/ álcool (CnH2n+1OH)/ água (H2O) apresentam fases no estado líquido cristalino nemático. Essas fases nemáticas foram colesterizadas através da adicão do agente qui
Autor:
Antônio M. Figueiredo Neto, Oscar R. Santos, Dennys Reis, Arnaldo G. Oliveira-Filho, Cristiano L. P. Oliveira
Publikováno v:
Liquid Crystals XXVI.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::714a118366ac05afe9209cd9ece35420
https://doi.org/10.1117/12.2632245
https://doi.org/10.1117/12.2632245
Autor:
Kinnari Parekh, Daniel H. G. Espinosa, Cristiano L. P. Oliveira, Wagner Wlysses, Antônio Martins Figueiredo Neto, Dennys Reis
Publikováno v:
Materials Chemistry and Physics. 222:217-226
We report the effect of replacement of 5% of the Fe atoms by Ho during the synthesis of magnetic nanoparticles (MNPs) in the original colloidal system composed of Mn, Zn, Fe, O. Without the presence of Ho the MNPs are spherical and, when the Ho is in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98df3bc15bd85b8166370d457a2a75d1
https://doi.org/10.1016/j.matchemphys.2018.10.020
https://doi.org/10.1016/j.matchemphys.2018.10.020
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The effects of the anionic azo dye Sunset Yellow on the stabilization of lyotropic uniaxial and biaxial nematic phases and on the uniaxial to biaxial phase transitions were studied. The dye was added in different concentrations to the host ternary mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::086faf01454881fd4e260737b226e745
https://doi.org/10.1117/12.2582566
https://doi.org/10.1117/12.2582566
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
In the present study, the interactions of the anionic azo dye Sunset Yellow with dodecylalkylammonium bromide (DAABr) surfactants in lyotropic mixtures have been investigated for the stabilization of the different lyotropic nematic phases. Sunset Yel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0f3aeb9815a707f54d43e0e1f4435892
Autor:
Cristiano L. P. Oliveira, A. G. Oliveira-Filho, Dennys Reis, Ofd Santos, A. M. Figueiredo Neto
Publikováno v:
Journal of Molecular Liquids. 349:118097
We investigate a lyotropic mixture presenting in the calamitic nematic phase ( N C ) and its corresponding calamitic cholesteric phase ( Ch C ), where a small amount of the chiral agent (brucine sulfate) was added. Different experimental techniques (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0bae3c12e3a967392b8510bdbe492de
https://doi.org/10.1016/j.molliq.2021.118097
https://doi.org/10.1016/j.molliq.2021.118097
Autor:
Dennys Reis, Daniel H. G. Espinosa, Ana Paula de Queiroz Mello, Antônio Martins Figueiredo Neto, Ghadeer Albattarni
Publikováno v:
Brazilian Journal of Physics. 48:560-570
Modified low-density lipoprotein (LDL) is a well-known risk marker for diabetes and cardiovascular disease. In vitro and in vivo studies have shown that native LDL particles, when modified by oxidation and/or glycation processes, become proatherogeni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a69da6552105b3d3cfa827bab56698e4
https://doi.org/10.1007/s13538-018-0600-x
https://doi.org/10.1007/s13538-018-0600-x
Publikováno v:
Liquid Crystals. 45:475-484
We examine an eventual coexistence of discotic () and calamitic () nematic uniaxial phases in the sodium dodecyl sulphate (SDS)/1-decanol (DeOH)/D2O mixture phase diagram. This coexistence is claim...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f97be65d3def89ded3b6670c25e4cc6
https://doi.org/10.1080/02678292.2017.1347292
https://doi.org/10.1080/02678292.2017.1347292
Publikováno v:
Liquid Crystals. 45:219-229
Lyotropic quaternary mixtures of potassium alkanoates (KCx) and sodium alkyl sulphates (NaCxS), where x is the number of carbon atoms in their alkyl chains, were prepared to investigate the effect of the surfactant alkyl chain length on the stabilisa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcb5f18874828e05aaf56ad4e170300c
https://doi.org/10.1080/02678292.2017.1309698
https://doi.org/10.1080/02678292.2017.1309698