Nuclear magnetic resonance studies on pyridine dinucleotides. I. The pH dependence of the carbon 13 nuclear magnetic resonance of nicotinamide adenine dinucleotide.
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Benzamides↗
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Results for “MAGNETICS”
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[Study of the proton magnetic relaxation in bone regenerate in dynamics according to data of nuclear magnetic resonance].
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Animals↗
[Evaluation of magnetic anisotropy of multimembrane cells in a constant magnetic field (external segments of frog retina rods)].
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Animals↗
Nuclear magnetic resonance study of the binding of phosphoenolpyruvate and phosphoenol-alpha-ketobutyrate to manganese pyruvate kinase. Temperature, frequency,and monovalent cation dependence of water proton nuclear magnetic resonance relaxation rates.
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Binding Sites↗
[Surgical removal of intraocular magnetic foreign bodies by means of a pulsating hand magnet].
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Eye Foreign Bodies↗
[Magnetic alloys in prosthodontics. Magnetic attachment].
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Dental Alloys↗
[Effect of a constant magnetic field and gamma radiation on the hereditary structure of somatic cells. Effect of the combination of a constant magnetic field and ionizing radiation on human lymphocytes in vitro].
Samples of human whole blood were exposed in CMF (field induction, 0.3 T) for 15, 30, 45, 60, 75, 90, 120, 150, 180, 240, 300 or 360 min. 15 min following exposure, the samples were gamma-irradiated in a dose of 0.0516 C/kg (137Cs) at a dose rate of 1.95 A/kg. The following chromosome aberrations were scored: deletions dicentrics, rings, and symmetrical exchanges. Exposure of the blood in CMF for 15 to 360 min decreased radiation damage to cells as compared with unexposed irradiated samples. The extention of time from 15 to 180 min increases the effect the smallest amount of chromosome damages being scored at 150-180 min. A 2.8 - fold, 3 - fold and 3.5 - fold decrease was registered in the number of aberrant cells, deletions and dicentrics, respectively. With increasing time of exposure (240 min), the radiomodifying effect started decreasing, and with 300-360 min exposure it was the same as that observed at 15-45 min.
Cesium Radioisotopes↗
[Efficacy of using a cobalt-samarium eye magnet and approaches to removing magnetic fragments from the posterior portion of the eye].
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Adult↗
[The application of the magnetic bracket to advance the orthodontic treatment system. The development of magnetic bracket].
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Humans↗
[Use of magnetics and magnetic alloys in the field of dental prosthesis].
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Cobalt↗
[Effect of magnetic fields on the radiation sensitivity of mice. 1. Effect of infra-low frequency of magnetic fields of low intensity on survival of experimental animals after x-ray irradiation].
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Animals↗
[An approach to magnetically controlled cancer chemotherapy. III. Magnetic control of ferromagnetic mitomycin C microcapsules in the artery (author's transl)].
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Animals↗
[An approach to magnetically controlled cancer chemotherapy. IV. Magnetically controlled intravesical instillation of ferromagnetic mitomycin C microcapsules for bladder tumor of the rabbit (author's transl)].
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Animals↗
[An approach to magnetically controlled cancer chemotherapy. V. Preparation, properties and pharmacokinetics of microcapsules encased with magnetic particles and mitomycin C (author's transl)].
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Animals↗
[Correction of funnel chest by using a magnetic system of permanent samarium-cobalt magnets].
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Adolescent↗
[Permanent magnetic field of elastic magnets in the treatment complex in surgical interventions on the spine].
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Animals↗
[An approach to magnetically controlled cancer chemotherapy. II. Theoretical basis on magnetic guide of microcapsules in vascular system (author's transl)].
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Blood Flow Velocity↗
[Radiofrequency magnetic fields and SAR in magnetic resonance for clinical use].
The exposure to radiofrequency (RF) electromagnetic fields is one of the main aspects to be controlled in order to ensure the safety of patients in an NMR environment. Starting from the description of the main physical characteristics of RF fields active in imaging instrumentation, a simple model is obtained which accounts for the experimental interdependence between the parameters of the stimulus and SAR values deposited on the patients. This model can yield a preliminary/approximate prediction of exposure levels for a given test. Some NMR equipment admit the estimation of the actual SAR values during the test on the basis of electrical measurements. The paper illustrates the basic principles of these measurements. The biological effects associated with the absorption of RF energy are discussed with particular attention to the physical and biological factors which may result in local heating on the body, a danger which may not be prevented by simply observing the prescribed thresholds of mean exposure.
Biophysical Phenomena↗