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Magnetic marker

W., Magnetic marker monitoring of esophageal, gastric and duodenal transit of non-disintegrating capsules, Pharmazie 1999, 54, 426-430. [Pg.566]

The signal measured by sensor can be used to quantify the amount of analyte present. The response to the sensor is determined by the in-plane component of the stray fields induced by the magnetized microspheres. Concentrations as low as 3.2 pg/ml have been detected [98], The introduction of tunneling magnetoresistance (TMR) sensing elements and smaller magnetic markers will increase the sensitivity of the method. [Pg.470]

R250 J. Belloque and M. Ramos, Application of NMR Spectroscopy to Milk and Dairy Products , Trends Food Set Technol, 1999,10, 313 R251 P. S. Belton, Nuclear Magnetic Resonance Studies of the Hydration of Proteins and DNA , Cell Mol Life Set, 2000, 57, 993 R252 M. Benedikt, F. Caspers and M. Lindroos, Application of Magnetic Markers for Precise Measurement of Magnetic Fields in Ramped Accelerators , Part. Accel, 1999, 63, 57... [Pg.20]

Differential Transformer (VDT) Sensors Magnetic Markers for Biosensing Sensors Based on Magnetic Harmonic Field Tuning... [Pg.51]

FIGURE 14.12 Principle of the magnetoresistive biosensor (a) immobilization of the probe DNA (b) hybridization of the analyte DNA and (c) binding of the magnetic markers and detection of their stray field by the GMR-sensor. (From Schotter, J. et al. 2004. Biosens. Bioelectron. 19 1149-1156. With permission.)... [Pg.330]

FIGURE 14.14 Sandwich approach used in the magneto-binding assay, where the target analyte is bound between the silica carrier particles and the magneto markers (a). Subsequent sedimentation of the protein/ particle complex (b) allows the magnetic permeability meter to measure the enrichment of magnetic markers at the bottom of the vial (c). (From Kriz, K. et al. 1998. Biosens. Bioelectron. 13 817-823. With permission.)... [Pg.331]

Early neuronal damage detected by immunohistochemistry has been confirmed by brain magnetic resonance spectroscopy (MRS) analysis of the neuronal marker N-acetylaspartate (NAA) (commonly expressed as an NAA/creatine ratio NAA/ Cr) in the acute and chronic phases of infection in SIV-infected macaques (Fuller et al. 2004 Greco et al. 2004 Lentz et al. 2005 Lentz et al. 2008 Williams et al. 2005). In a macaque model involving CD8h- T lymphocyte depletion along with SIV inoculation, Williams et al. (2005) demonstrated a reduction in NAA/Cr in the... [Pg.11]

GC and GC-MS (see Chapter 2), are ideal for the separation and characterization of individual molecular species. Characterization generally relies on the principle of chemotaxonomy, where the presence of a specific compound or distribution of compounds in the ancient sample is matched with its presence in a contemporary authentic substance. The use of such 6molecular markers is not without its problems, since many compounds are widely distributed in a range of materials, and the composition of ancient samples may have been altered significantly during preparation, use and subsequent burial. Other spectroscopic techniques offer valuable complementary information. For example, infrared (IR) spectroscopy and 13C nuclear magnetic resonance (NMR) spectroscopy have also been applied. [Pg.242]

A combination of GC-FTIR-MS is also being developed to provide an extremely powerful tool for identifying molecular markers [703, 704]. If sufficient quantities of individual molecular markers can be isolated, then there are various H [705, 706] and 13C nuclear magnetic resonance techniques [505,707-710] available to assist in their structural identification. [Pg.88]

B.M. Seddon, R.J. Maxwell, D.J. Floness, R. Grimshaw, F. Raynaud, G.M. Tozer, P. Workman, Validation of the fluorinated 2-nitroimidazole SR-4554 as a noninvasive hypoxia marker detected by magnetic resonance spectroscopy, Clin. Cancer Res. [Pg.272]

M.V. Papadopoulou, R. Pouremad, M.K. Rao, M. Ji, W.D. Bloomer, In v/fraevaluation of 4-[3-(2-nitro-1-imidazolyl)-propylamino]-7-trifluoromethylquinoline hydrochloride (NLTQ-1), a new bioreductive agent as a hypoxia marker by F-19-magnetic resonance spectroscopy (F-19-MRS), In Vivo 15 (2001) 365-371. [Pg.276]

Magnetic resonance spectroscopy studies of COS patients revealed decreases in the ratio of N-acetyl aspartate to creatine (a putative marker of neuronal density) in the frontal cortex (Thomas et ah, 1998) and hippocampus (Bertolino et ah, 1998). These results were similar in direction and extent to those seen in adult patients. [Pg.186]

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See also in sourсe #XX -- [ Pg.468 , Pg.470 , Pg.471 ]



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