Magnetic enhancement

FIG. 29. C and N sp- fractions as functions of the nitrogen content in films deposited by magnetically enhanced RFPECVD in CH4-He-N2 atmospheres. (Reproduced from [14].)... 

Figure 7 Receptor-induced magnetization enhancement mechanism. The contrast agent consists of two parts the Gdm chelate and the protein-binding moiety. Within the bloodstream, the agent binds to the protein. The bound form is in equilibrium with the small amount of free form, which can be renally excreted steadily over time. The bound form has high relaxivity by virtue of its slow rotation (reproduced by permission of the American Chemical Society from Chem. Rev., 1999, 99, 2293).

G.H. Kim, A.G. Rand, and S.V. Letcher, Impedance characterization of a piezoelectric immunosensor. Part II Salmonella typhimurium detection using magnetic enhancement. Biosens. Bioelectron. 18, 91-99 (2003). 

The nature of the surface of organogermanium films, obtained by magnetically enhanced rf-plasma deposition from tetraethylgermane, was examined by ESCA (electron spectroscopy for chemical analysis) and FTIR methods56. 

A magnetization enhancement of (Ga,Mn)As by circularly polarized light illumination has been also observed (Oiwa et al. 2002). 

Polarization transfer, and its subsequent advantage of magnetization enhancement, has also been used. Thus 2D extension of refocused INEPT, with a selective... 

This modified CR is targeted for blood. This modified CR designated as MS-325 exploits the relaxivity, r, the coefficient which relates the H20 T to the concentration of CR in vitro. The r of free MS-325 is 6.6 (mM) 1 S-1 but the value increases to SOSO (mM) 1 S 1 when the CR is bound to albumin. This means that the CR is reversibly activated on binding to human serum albumin and is very much more effective in reducing H20 T value. Hence the detection is made easy at much lower levels. This effect, known as proton relaxation enhancement (or the receptor-induced magnetization enhancement), is due to the reduced rate of rotation of CR molecule bound to a macromolecule, and in this case, the rotation rate may be reduced by two orders of magnitude. 

Receptor-induced magnetization enhancement (RIME) describes the binding of CAs to biomolecules, such as proteins or receptors. This leads to an increase in the concentration and retention time of CAs in a particular region. It also results in an increase in tr and has a tremendous effect on increasing the relaxivity [64]. 

The plasma polymerization reactor used is schematically shown in Figure 5.5. Parallel electrodes, equipped with magnetic enhancement, by a 10-kHz power source created glow discharge of the monomer. A thickness monitor sensor is placed at the projected circumference of electrodes intercepting the midelectrode plane. The electrodes are 13.2 cm in diameter and 6.1cm apart. The thickness monitor surface is perpendicular to the plane parallel to the electrodes. 

Figure 14.1 Confining effect of magnetron glow discharge. The upper and lower reactors have identical electrode systems, except that the upper electrodes have no magnetic enhancement and are operated at identical glow discharge conditions. Argon, 0.40 cm sxp/iiiin 46mtorr 5W 10 kHz.

Conventional mode of DC glow discharge (C-A), where the cathode (C) and the anode (A) are planar electrodes without magnetic enhancement. 

Nuth 111 JA, Wilkinson GM (1995) Magnetically enhanced eoagulation of very small iron grains A correction of the enhaneement faetor due to dipole-dipole interaetions. learus 117 431-434 O Reilly W (1984) Rock and Mineral Magnetism. Blackie, Glasgow and London... 

Since the first reports on magnetically enhanced nucleic acid delivery in the year 2000 (1,2), magnetofection has become a well-established method and has been predominantly used for in vitro applications. It has been shown to potentiate viral (3, 4) and non-viral nucleic acid delivery, including plasmids or small constructs such as antisense oligonucleotides, and synthetic siRNA and PCR products (5-10). The nucleic acids can be directly associated with magnetic nanoparticles in... 

Heintz M. J., Mifflin K., Broekaert J. A. C. and Hieftje G. M. (1995) Investigations of a magnetically enhanced Grimm-type glow discharge source, Appl Spectrosc 49 241-246. 

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