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Cobalt Isotopes (1):
Recent article
Cobalt Isotopes
Medical Physics (37)3 2010
Abstract
The 2D rectangular data set calculated in the present work could be considered for quality control on radiotherapy treatment planning systems....
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PMID: 20384274
PDF is available here.
PDF is available here.
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Abstract
Abstract
We present a technique that allows measurement of a real-time 2D-image of the temperature distribution inside an NMR sample during an experiment involving rf-heating. NMR imaging methods have previously been used to project the temperature distribution inside an NMR sample onto a single spatial axis...
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PMID: 17507272
PDF is available here.
PDF is available here.
Abstract
Forty-five dogs with incompletely excised grade II mast cell tumors were treated with radiation using a cobalt 60 teletherapy unit (15 fractions of 3.2 Gy for a total of 48 Gy). Twenty-four of the dogs underwent prophylactic regional lymph node irradiation. Three (6.7%) dogs had tumor recurrence, tw...
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PMID: 17088389
PDF is available here.
PDF is available here.
Abstract
We conclude that a single preoperative 500-cGy dose of irradiation delays the healing of rectal anastomosis in rats....
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PMID: 15933783
PDF is available here.
PDF is available here.
NMR in Biomedicine (18)2 2005
Abstract
Determination of the intracellular water volumes using NMR spectroscopy was performed using the NMR-visible nuclei: 59Co and 2H or 1H. Accurate measurement of intracellular water in cell suspensions and perfused organs is an important physiological parameter in the context of electrolyte homeostasis...
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PMID: 15770623
PDF is available here.
PDF is available here.
Abstract
59Co and 23Na NMR has been applied to the layered cobalt oxides NaCoO(2) and HCoO(2) at three different magnetic field strengths (4.7, 7.1 and 11.7T). The 59Co and 23Na quadrupole and anisotropic shift tensors have been determined by iterative fitting of the NMR line shapes at the three magnetic fie...
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PMID: 12787906
PDF is available here.
PDF is available here.
Abstract
Practical contemporary radiotherapy dosimetry systems used for dose measurement and verification are ionization chambers (which typically have at least a 0.1 cm3 air cavity volume), thermoluminescent dosimeters (TLDs) and silicon diodes. However, during the last decade, there has been an increased i...
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PMID: 12765328
PDF is available here.
PDF is available here.
Abstract
We compared dosimetry based on the two most widespread absorbed dose based recommendations (AAPM TG-51 and IAEA TRS-398) with two air kerma based recommendations (NCS report-5 and IAEA TRS-381). Measurements were performed in three clinical electron beam energies using two NE2571-type cylindrical ch...
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PMID: 12765324
PDF is available here.
PDF is available here.
Abstract
Residual 60Co activity in five steel samples induced by neutrons from the Nagasaki atomic bomb has been measured within about 1000 m from the hypocenter. The chemical separation of cobalt and nickel from steel samples was performed, and cobalt-enriched samples were prepared for all samples. Gamma-ra...
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PMID: 12674203
PDF is available here.
PDF is available here.
Abstract
Mitotic compaction of chromatin was generated by treatment of cells with nocodazole. Alternatively, chromatin structure was altered by incubating cells in 500 mM NaCl. The irradiation response in the dose range of 1-10 Gy was measured by colony assay and by a modified fluorometric analysis of DNA un...
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PMID: 12373329
PDF is available here.
PDF is available here.
Abstract
Although magnesium fulfills several essential biochemical roles, direct studies on this ion are complicated by its unfavorable spectroscopic characteristics. This contribution explores the possibility of monitoring magnesium-nucleic acid binding via a combination of [Co(NH3)6]3+ as surrogate for [Mg...
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PMID: 11960475
PDF is available here.
PDF is available here.
Radiation Research (157)4 2002
Abstract
These results indicate that the yield coefficient alpha(dic) for 144 keV neutrons is similar to the one for 565 keV neutrons, and that modification of the alpha(dic) value of the low-LET reference radiation, due to changes in the experimental conditions, can influence the RBE(m). Consequently, alpha...
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PMID: 11893248
PDF is available here.
PDF is available here.
Journal of Nutrition (131)2 2001
Abstract
We directly studied vitamin B-12 absorption from water, milk and fortified bread in adult subjects using (58)Co-labeled vitamin B-12 and a whole body gamma-ray counter/spectrophotometer. Sixteen healthy men and women over the age of 60 y with normal serum levels of vitamin B-12 and normal basal gast...
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PMID: 11160548
PDF is available here.
PDF is available here.
Abstract
I = 7/2 nuclei. From the 3QMAS NMR spectrum a spinning sideband manifold in the isotropic dimension with high resolution is reconstructed from the intensities of all spinning sidebands in the 3QMAS spectrum. The chemical shift anisotropy (CSA) parameters determined from this spectrum are compared wi...
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PMID: 11529417
PDF is available here.
PDF is available here.
Abstract
Insufficient fitness of experimental data with convenient linear and linear-quadratic models of "dose-effect" dependence for the number of chromosome aberrations of different types were revealed. Proposed method of approximation of the experimental "dose-effect" dependence with piece-linear splines...
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PMID: 11833340
PDF is available here.
PDF is available here.
Abstract
The first investigation and analysis of (59)Co 2D NMR homonuclear chemical shift correlation spectra are reported for the tetrahedral mixed-metal cluster HFeCo(3)(CO)(11)PPh(2)H. For this cluster in solution, the (59)Co 2D COSY and DQF COSY NMR spectra prove the existence of a scalar coupling betwee...
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PMID: 10617436
PDF is available here.
PDF is available here.
Abstract
I = 7/2. The possibilities of the MQMAS spectroscopy for determining the relative orientation of the two tensors and its advantage over previous techniques are discussed. Reported experimental spectra at different spinning speeds of Na3Co(NO2)6 are accurately reproduced by our theoretical simulation...
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PMID: 9800268
PDF is available here.
PDF is available here.
Biochemistry and Cell Biology (76)2-3 1998
Abstract
I describe a few recent developments in NMR studies of quadrupolar nuclei and demonstrate the potential of solid-state quadrupolar NMR in the study of biological systems. In particular, I discuss the application of solid-state NMR of (17)O, 67Zn, 59Co, 23Na, and 39K nuclei with a prognosis for futur...
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PMID: 9923712
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (266)18 1991
Abstract
We provide direct evidence that the vitronectin receptor (VNR) is a metalloprotein. The unique electron shell of Co(II), an ion which we show supports ligand recognition by VNR, enables its oxidative conversion to inert Co(III). This property facilitated "affinity labeling" of VNR with 58Co(III) by...
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PMID: 1711032
PDF is available here.
PDF is available here.
Ou Daigaku shigakushi (17)3 1990
Abstract
Experiments were made to determine the dependence of CO3(3-) signal intensity on radiation dose in the low dose region from 3.1 x 10(-4) C/kg to 865.6 x 10(-4) C/kg. After all human tooth enamel samples were crushed into 350-500 micrometers particles, they were irradiated with 60Co gamma rays. Irrad...
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PMID: 1966735
PDF is available here.
PDF is available here.
Abstract
Pharmacokinetics of the antitumour agent 14CO-dimetinur (100 mg/kg) after oral administration to the intact mice and those with solid leukemia P 388 is characterized by its rapid delivery to organs and tumours with the achievement of maximum radioactivity 5 hours later and the further gradually decl...
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PMID: 2298149
PDF is available here.
PDF is available here.
Radioisotopes (36)8 1987
Abstract
The isotopic exchange method is studied for the simultaneous determination of radioactive and stable isotopes of cobalt in environmental samples. Radioactive cobalt is isotopically exchanged with Co-CyDTA in HC1 solution of the sample. The solvent extraction method is used for the separation of Co2+...
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PMID: 3423313
PDF is available here.
PDF is available here.
Radioisotopes (34)5 1985
Abstract
Two kinds of mussel, Septifer virgatus and Mytilus edulis, were collected from Kyushu island, Japan, in order to elucidate a background level of 60Co, which is one of the most significant radionuclide for environmental monitoring around a nuclear power plant. The mussels were collected from 7 locati...
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PMID: 4035009
PDF is available here.
PDF is available here.
Radioisotopes (34)2 1985
Abstract
Radioisotopes (28)5 1979
Abstract
Studies were made to develop the method for rapid determination of radioactive and stable cobalt in a single specimen of marine biological materials. The sample was dried, ashed, and dissolved in acid. The cobalt was extracted with 1-nitroso-2-naphthol benzene and determined by absorptiometry on the...
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PMID: 472377
PDF is available here.
PDF is available here.
Abstract
Shigaku = Odontology (64)5 1977
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Journal of Dairy Science (59)5 1976
Abstract
Purified bovine pancreatic lipase was highly unstable at and above refrigeration temperature. However, it could be stored frozen without loss of activity. Milk solids had some protective effect upon the enzyme against gamma-irradiation. Low concentrations of sodium, calcium, and magnesium salts stim...
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PMID: 818137
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (250)18 1975
Abstract
The dicarboxylate radical -OOC--CH--CH(OH)COO- was generated in an N2O-saturated fumarate solution by high energy ionizing radiation. When NADH was present in the solution, product analysis indicated a stoichiometry of 2 molecules of the radical reacted with 1 NADH molecule to form 2 malate and 1 en...
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PMID: 170258
PDF is available here.
PDF is available here.
Minerva medica (66)52 1975
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Minerva medica (66)52 1975
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Laryngoscope (84)3 1974
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Laryngoscope (84)3 1974
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British Journal of Radiology (46)551 1973
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British Journal of Radiology (46)551 1973
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Archives of Surgery (107)4 1973
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Acta Virologica (17)5 1973
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Journal of Pediatrics (83)3 1973
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