Encontrados 8 documentos, a visualizar página 1 de 1
Anomalous sub aortic left brachiocephalic vein: a case report
Jayaprakasam,Vetri Sudar; Gurudev,Santosh; Irion,Klaus; Khan,Ali Nawaz; Pettit,Andrew R.The left brachiocephalic vein occasionally follows an aberrant course. It is usually associated with congenital cardiac anomaly. We present a case of anomalous left brachiocephalic vein which followed a sub aortic course, with no cardiac abnormality. Multi detector computed tomography is very useful in accurate diagnosis of this condition and prevents any further investigation in cases of isolated abnormalities.
Liquid Crystals and Phase Equilibria Binary Bile Salt-Water Systems
Marques, Eduardo F.; Edlund, Håkan; Mesa, Camillo La; Khan, AliThe phase behavior of several binary sodium bile salt-water systems is investigated over the entire concentration range, with emphasis on concentrated regions beyond the isotropic solution phase. The studied bile acid salts comprise the free salt sodium deoxycholate (SDC), the taurine conjugates sodium taurocholate (STC), sodium taurodeoxycholate (STDC), and sodium taurochenodeoxycholate (STCDC) and the glycine...
Micelles, Dispersions, and Liquid Crystals in the Catanionic Mixture Bile Salt−...
Marques, Eduardo F.; Regev, Oren; Edlund, Håkan; Khan, AliThe phase behavior and phase structure for the catanionic pair sodium taurodeoxycholate−didodecyldimethylammonium bromide (DDAB) are investigated, at 25 °C. A combination of techniques is used including light and electron microscopy, small-angle X-ray scattering, and pulsed field gradient NMR self-diffusion. The bile salt micellar solution incorporates large amounts of the double-chained amphiphile, with the so...
Liquid Crystals and Phase Equilibria Binary Bile Salt-Water Systems
Marques, Eduardo F.; Edlund, Håkan; Mesa, Camillo La; Khan, AliThe phase behavior of several binary sodium bile salt-water systems is investigated over the entire concentration range, with emphasis on concentrated regions beyond the isotropic solution phase. The studied bile acid salts comprise the free salt sodium deoxycholate (SDC), the taurine conjugates sodium taurocholate (STC), sodium taurodeoxycholate (STDC), and sodium taurochenodeoxycholate (STCDC) and the glycine...
Synergism and polymorphism in mixed surfactant systems
Khan, Ali; Marques, Eduardo FMixed surfactant systems have been, for a long time, one of the favorite areas for experimental studies on interfacial and bulk properties of surfactants. Beyond the well-known synergistic properties, with relevance to technical applications, recent studies increasingly focus on the bulk aggregation behavior. As more systematic and detailed experimental data is collected (for example, by use of scattering and d...
Interactions between Catanionic Vesicles and Oppositely Charged Polyelectrolyte...
Marques, Eduardo F.; Regev, Oren; Khan, Ali; Miguel, Maria da Graça; Lindman, BjörnStructural and phase behavior effects resulting from the addition of a polyelectrolyte to a solution of oppositely charged vesicles are investigated in this work. Two cationic polyelectrolytes derived from hydroxyethylcellulose were used: JR400, a homopolymer, and Quatrisoft LM200, a polymer modified with alkyl side chains. The vesicles are composed of mixed anionic surfactant (sodium dodecyl sulfate) and cati...
Polymer-Induced Structural Effects on Catanionic Vesicles
Regev, Oren; Marques, Eduardo F.; Khan, Alihttp://dx.doi.org/10.1021/la9803474
Vesicle Formation and General Phase Behavior in the Catanionic Mixture SDS−DDAB...
Marques, Eduardo F.; Regev, Oren; Khan, Ali; Miguel, Maria da Graça; Lindman, BjörnCatanionic mixtures are aqueous mixtures of oppositely charged surfactants which display novel phase behavior and interfacial properties in comparison with those of the individual surfactants. One phase behavior property is the ability of these systems to spontaneously form stable vesicles at high dilution. The phase behavior of the mixture sodium dodecyl sulfate (SDS) − didodecyldimethylammonium bromide (DDAB)...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||