ASEPTIC NECROSIS OF THE FEMORAL HEAD: WHAT DO WE KNOW ABOUT TREATMENT OPTIONS?

Aseptic necrosis of the femoral head is one of the most important problems in traumatology, a complex disease in which there is a gradual deformation of the femoral head in the places where the greatest load is applied to it. The disease is the cause of disability in 7% of all orthopedic patients with lower limb dysfunction. There are various surgical and conservative approaches to the treatment of this pathology.

Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water.

This work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The particles were characterized by XRD and SEM.

Effect of ferroelectric BaTiO particles on the threshold voltage of a smectic A liquid crystal.

The influence of small ferroelectric BaTiO particles on the planar-homeotropic transition threshold voltage in smectic A liquid crystals consisting of -nitrophenyl -decyloxybenzoate and 4-cyano-4'-pentylbiphenyl were studied by using capacitance-voltage (-) measurements. It was shown that the BaTiO particles significantly reduce the threshold voltage. The obtained result is explained by two factors: an increase of dielectric anisotropy of the liquid crystals and the formation of a strong electric field near polarized particles of BaTiO.

[Surgical treatment of pregnant women with benign ovarian tumors].

The article describes the features of surgery in tumors and tumor-like formations of the ovaries in pregnant women. The influence of surgery on the course and outcome of pregnancy and childbirth is presented. It is showed high efficiency of laparoscopic surgery during I and II trimesters of pregnancy.

Synthesis and in-vitro photodynamic studies of the superparamagnetic chitosan hydrogel/chlorin E6 nanocarriers.

The objective of the present study was to develop superparamagnetic chitosan(CS) � dextran sulfate(DS) hydrogels as a intelligent drug system for effective carrying of Chlorin E6(chn E6) photosensitizer to cancer cells. This system can be detectable by magnetic Resonance Imaging technique. The study shows that the lifetime of the triplet state for chn E6 photosensitizer is significantly increase when encapsulate into hydrogel.