The objective of the present research was to synthesize, characterize and to investigate the removal efficiency of lead (II) ion from synthetic lead solution by a hybrid fibrous ion exchanger. In the present study polyacrylamide thorium (IV) phosphate was synthesized by co-precipitation method and w... | PMID: 18242841

PDF is available here.

A method for determining the specific alpha activity of thick sources using a large area ZnS(Ag) scintillation detector is presented. In this method a quadratic relationship between the detector response and window thickness is assumed. This method provides a quick estimation of alpha activity in th... | PMID: 17383779

PDF is available here.

We analyze the transformation from the thorium phosphate-hydrogen phosphate hydrate (TPHPH) to the beta form of the thorium phosphate diphosphate (beta-TPD) in relation with the phosphorus networks. These techniques are complementary: the through space coupling gives an insight on the dipolar phosph... | PMID: 16289519

PDF is available here.

Our MP2 calculations converge to slightly bent and tetrahedral structures, respectively. This investigation reports the first evidence for pure actinide dihydroxide and tetrahydroxide molecules.... | PMID: 16358033

PDF is available here.

The spin-Hamiltonian (SH) parameters g factors g(parallel), g(perpendicular) and the hyperfine structure parameters A(parallel) and A(perpendicular) for Er3+ at the tetragonally distorted dodecahedral Th4+ site in ThGeO4 are theoretically investigated by using the perturbation formulas of the SH par... | PMID: 16165027

PDF is available here.

The acetylene-like linear HThThH structure is calculated to lie almost degenerate to its rhombic alternative. Its unsupported Th-Th triple bond would be the first one of its kind. | PMID: 16173705

PDF is available here.

232Th (7.76 x 10(-7) M) and Cd (0.89 x 10(-8) M) in concentrations which do not exceed officially prescribed standards when entering with water do not increase the frequency of chromosome aberrations in comparison with the control. Such concentrations do not cause toxic effects in plants on the leve... | PMID: 16398149

PDF is available here.

We studied the effects of both: of the separate and of the combined exposure to gamma-radiation (absorbed doses for 30 days were 1.4-1.8 cGy, for 90 days were 4.3-5.4 cGy) and 232Th nitrate (in concentrations 6.0; 20.0 and 60.0 mg/l) on the CBA line mice thyroid gland. Hat is shown the thyroid gland... | PMID: 16454345

PDF is available here.

The short-time (30 hours) and chronic (30 days) 232Th and Cd combined effects on Tradescantia and Allium cepa plants were investigated. The 232Th ion concentration was equal to 0.18 mg/l and Cd ion--to 60 mg/l. The early response of both somatic and generative plant cells on Th and Cd combined actio... | PMID: 12945185

PDF is available here.

Two novel bis-schiff base complexes [UO2 (PMTHP)2en] and [Th(PMTHP)2en(NO3)2] have been synthesized, where (PMTHP)2en = N,N'-bis[(1-phenyl-3-methyl-5-oxo-5-pyrazolinyl)- 2-thenoylmethylidyne] ethylenediamine, and characterized by elemental analysis, IR, UV-Vis, 1H NMR, 13C NMR and molar conductance... | PMID: 12914169

PDF is available here.

A direct quantification of human serum albumin (HSA) in blood serum samples without separation is proposed based on the measurements of total internal reflected resonance light scattering (TIR-RLS) at water/tetrachloromethane (H(2)O/CCl(4)) interfaces. In the pH range of 6.37-6.59, the coadsorption... | PMID: 12234467

PDF is available here.

Samples originating from an EU sponsored intercomparison exercise were analysed by gamma ray spectrometry (a thorium solution sample, a zircon sand sample and a thorium ore sample). An alpha track method was also used to analyse the solution sample. The detection efficiency calibration for the gamma... | PMID: 11843362

PDF is available here.

Effects of separate and combined action of 232Th and Cd on Allium cepa root tip cells were investigated. It has been shown that cytogenetic effects of 232Th results mainly from its ability to induce genome damages. Cadmium in the examined concentration does not induce chromosomal vagrants, and this... | PMID: 11601397

PDF is available here.

Under both separate and combined influence of 232nd-nitrate and potassium nitrate a study was made of the yield of somatic mutation frequencies, the level of morphologically abnormal cells and the loss of reproduction integrity in the stamen hairs of Tradescantia (clone 02). All investigated concent... | PMID: 11033868

PDF is available here.

The action of 232Th-nitrate in concentration 0.09, 0.18 and 0.36 mg/l (counting on 232Th ion) on water cultures of Tradescantia (clone 02) was investigated. It was found that all investigated concentrations of 232Th showed statistically significant genotoxic effect and increased level of morphologic... | PMID: 11031496

PDF is available here.

We studied histomorphology of the CBA line mice liver after 30 and 90 days of the low dose gamma-radiation influence combined with incorporated Th(NO3)4 in doses 0.03; 0.1; 0.3 grams per kilogram of the living mouse weight. Morphophysiological and morphometric changes were shown. The liver mass and... | PMID: 11155336

PDF is available here.

Change in the diffuse portion of the double electric layer at the blood-vascular wall border under the effect of thorium nitric oxide and heparin affects the tone and contractile ability of the rat tail artery: thorium diminishes the vessel rigidity and the amplitude of its contractile response, whe... | PMID: 10097278

PDF is available here.

1. With DTPA as a comparison, the siderophore analogue 3,4,3-LIHOPO has been examined for its ability to remove 228Th nitrate from the rat after subcutaneous (sc) and intramuscular (im) injection to simulate wound contamination. The commencement of treatment was delayed 30 min, 6 h or 1 d and the an... | PMID: 7779440

PDF is available here.

The efficacy of CaDTPA and ZnDTPA, the chelating agents of choice for several actinide elements, have been evaluated after the deposition of thorium in the rat lung in widely different amounts. The results showed that: 1. When the initial mass concentration of thorium simulated human exposure to fou... | PMID: 1673619

PDF is available here.

We show that non-colloidal thorium (thorium nitrate) injected in rats concentrates in a non soluble form in bone marrow macrophages, hepatocytes and Kupffer cells. These deposits of thorium associated with phosphorus can be explained by the formation of thorium phosphate in lysosomes and we demonstr... | PMID: 3353495

PDF is available here.

These results are discussed with respect to the increased enzymatic activities (superoxidismutase, catalase, glutathion-reductase, G6PD) found in some irradiated organisms.... | PMID: 3743671

PDF is available here.

Japanese quail were given UCl3 , UO2 (NO3)2, Th(NO3)4, or GdCl3 ( 153Gd -labeled) intravenously in aqueous solution. Distribution of Th among the tissues was as for Gd; distributions of U(III) and U(VI) were markedly different. For example, 18 hr after a 1.5 mumol/100 g dose, accumulations in female... | PMID: 6728797

PDF is available here.

Gas lantern mantles contain thorium to produce incandescence when lantern fuel is burned on the mantle. Although only thorium is initially present on the mantle, the thorium daughters build up, some over a period of weeks and some over a period of years, and significant quantities of these daughters... | PMID: 6706595

PDF is available here.

The translocation of 234Th from a simulated wound site and the efficacy of DTPA administration, as a function of the thorium compound injected as well as the DTPA treatment schedule, have been investigated in rats. Much more 234Th injected as citrate was translocated from the injection site than aft... | PMID: 6607231

PDF is available here.

Daily intraperitoneal administration of aqueous solution of 0.05 m mole/100 g b. wt. of uranyl nitrate and thorium nitrate has been observed for 7 days. Marked reduction in the seminiferous tubule diameter and gametogenic count was observed. Signs of testicular necrosis, exfoliation of germ cells, a... | PMID: 6837951

PDF is available here.

PMID: 18988352

PDF is available here.