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Gamma irradiation processing of hydroxyapatite/poly-L-lactide composite biomaterial
(Radiation Physics and Chemistry, 2003)
Effects of gamma irradiation on structure and physicochemical properties of the hydroxyapatite/poly-L-lactide (HAp/PLLA) composite were studied in this paper. Since the morphology of HAp/PLLA is very sensitive to gamma ...
Influence of synthesis parameters on the structure of boehmite sol particles
(Powder Technology, 2003)
Influence of the type and amount of acid, used for aluminium hydroxide peptization, on the crystallinity and specific surface area of the dispersed phase of boehmite sols as well as the pH of sols, was investigated. The ...
Dynamical symmetry breaking and the Nambu-Goldstone theorem in the Gaussian wave functional approximation
(Journal of Mathematical Physics, 2003)
We analyze the group-theoretical ramifications of the Nambu-Goldstone (NG) theorem in the self-consistent relativistic variational Gaussian wave functional approximation to spinless field theories. In an illustrative example ...
AIDSVAX results: an important open question
(Vaccine, 2003)
Research and clinical data reported during last 10 years indicate the possibility that AIDS vaccines based on the HIV-1 envelope protein gp120 may be worse then useless. A correct assessment of the safety of these AIDS ...
Elevated plasma levels of transforming growth factor-beta(1) (TGF-beta(1)) in patients with advanced breast cancer: association with disease progression
(European Journal of Cancer, 2003)
We examined the association between an elevated plasma TGF-beta(1) level and the disease progression of advanced breast cancer (BC) patients (n = 44). TGF-beta(1) levels were detected by an enzyme-linked immunosorbent assay ...
Ecto-ATPase and ecto-ATP-diphosphohydrolase are co-localized in rat hippocampal and caudate nucleus synaptic plasma membranes
(Physiological Research, 2003)
Enzymes that hydrolyze extracellular ATP, i.e. ecto-ATPase and ecto-ATP diphosphohydrolase (ATPDase), can be differentiated by ability of the latter to hydrolyze ADP and by slightly different kinetic properties of the two ...
Thermal and mechanical properties of cross-linked and uncross-linked linear low-density polyethylene-wax blends
(Polymer Degradation and Stability, 2003)
The influence of the wax content and different concentrations of the crosslinking agent on the thermal and mechanical properties of linear low-density polyethylene-wax blends has been investigated. It was found that an ...
The modulatory effect of estradiol benzoate on superoxide dismutase activity in the developing rat brain
(Brazilian Journal of Medical and Biological Research, 2003)
The sensitivity of copper,zinc (CuZn)- and manganese (Mn)-superoxide dismutase (SOD) to exogenous estradiol benzoate (EB) was investigated in Wistar rats during postnatal brain development. Enzyme activities were measured ...
Influence of AlOOH nanoparticles on the oxidation of iodide by persulphate
(Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 2003)
The oxidation of iodide by persulphate has been studied in the presence of the AlOOH nanoparticles. The rate of this reaction is significantly higher in the presence of the AlOOH nanoparticles than when it takes place in ...
Apoptotic versus genotoxic potential of antimtumor agents: a concept of duality in unity
(Medical Hypotheses, 2003)
Recent advances in anti-tumor therapy have raised a problem of secondary tumors and tumor resistance. Secondary tumors induced by chemotherapeutic agents as a consequence of primary therapy have poor prognostic outcome. ...