Nanohybrids of Magnetic Iron-Oxide Particles in Hydrophobic Organoclays for Oil Recovery

2010 ◽  
Vol 2 (5) ◽  
pp. 1349-1354 ◽  
Author(s):  
Ru-Siou Hsu ◽  
Wen-Hsin Chang ◽  
Jiang-Jen Lin
Ferrites ◽  
1982 ◽  
pp. 545-547
Author(s):  
Hiroshi Sugihara ◽  
Yasuta Taketomi ◽  
Tatsuo Uehori ◽  
Yasuo Imaoka

Micromachines ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 302 ◽  
Author(s):  
Seong-Eun Kim ◽  
My Van Tieu ◽  
Sei Young Hwang ◽  
Min-Ho Lee

The growing interest in magnetic materials as a universal tool has been shown by an increasing number of scientific publications regarding magnetic materials and its various applications. Substantial progress has been recently made on the synthesis of magnetic iron oxide particles in terms of size, chemical composition, and surface chemistry. In addition, surface layers of polymers, silica, biomolecules, etc., on magnetic particles, can be modified to obtain affinity to target molecules. The developed magnetic iron oxide particles have been significantly utilized for diagnostic applications, such as sample preparations and biosensing platforms, leading to the selectivity and sensitivity against target molecules and the ease of use in the sensing systems. For the process of sample preparations, the magnetic particles do assist in target isolation from biological environments, having non-specific molecules and undesired molecules. Moreover, the magnetic particles can be easily applied for various methods of biosensing devices, such as optical, electrochemical, and magnetic phenomena-based methods, and also any methods combined with microfluidic systems. Here we review the utilization of magnetic materials in the isolation/preconcentration of various molecules and cells, and their use in various techniques for diagnostic biosensors that may greatly contribute to future innovation in point-of-care and high-throughput automation systems.


2019 ◽  
Vol 805 ◽  
pp. 545-550 ◽  
Author(s):  
Basam A.E. Ben-Arfa ◽  
Farzin Mohseni ◽  
Isabel M. Miranda Salvado ◽  
JoséM.F. Ferreira ◽  
João S. Amaral ◽  
...  

1997 ◽  
Vol 38 (4) ◽  
pp. 584-597 ◽  
Author(s):  
R. Lawaczeck ◽  
H. Bauer ◽  
T. Frenzel ◽  
M. Hasegawa ◽  
Y. Ito ◽  
...  

Rationale and objectives: To evaluate the physical and pharmacological profiles of SH U555A, a suspension of magnetic iron oxide particles that is designed to enhance the visualization of liver tumors and metastases. Material and Methods: Chemical and physical methods were used to characterize the size and structure of these magnetic iron oxide particles in aqueous solution. The biodistribution and pharmacokinetics of the particles were studied in mice, rats and dogs. The imaging efficacy of the particles was demonstrated by MR imaging in rat liver tumors Results: The SH U555A particles consist of low-molecular-weight carboxydextran-coated iron oxides predominantly of the γ-Fe2O3 form with a hydrodynamic diameter ranging from 57-59 nm and strong T2 relaxivity of 164 liters * mmol−1 * S−1 (water, 0.47 T). In rats the particles exhibited a dose-dependent half-life of between 2 and 3 days in the liver at a dose of 20 μmol Fe/kg and a shorter half-life at lower doses. No major side effects were found. In a rat tumor model the tumor-to-liver contrast was markedly improved after i.v. administration of SH U555A. At a dose of 14 μmol Fe/kg the half-maximal contrast-effect was obtained even in nonoptimized T1-weighted spin-echo images. Conclusion: SH U555A is a superparamagnetic MR contrast agent for i.v. administration and has substantial potential for the demarcation of liver tumors.


1997 ◽  
Vol 38 (4) ◽  
pp. 584-597 ◽  
Author(s):  
Rudiger Lawaczeck ◽  
H. Bauer ◽  
T. Frenzel ◽  
M. Hasegawa ◽  
Y. Ito ◽  
...  

2019 ◽  
Vol 786 ◽  
pp. 71-76 ◽  
Author(s):  
Basam A.E. Ben–Arfa ◽  
Isabel M. Miranda Salvado ◽  
José M.F. Ferreira ◽  
Robert C. Pullar

2000 ◽  
Vol 83 (12) ◽  
pp. 2901-2906 ◽  
Author(s):  
Kazuyuki Hayashi ◽  
Mamoru Kamigaki ◽  
Hiroko Morii ◽  
Kikuo Okuyama

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