Phase development during setting and hardening of a bone cement based on α-tricalcium and octacalcium phosphates.

In this study, the phase development in the cement system α-TCP-OCP with phosphoric acid as a setting liquid was studied. The most promising formulation of α-TCP (60 wt%) and OCP (40 wt%) is proposed. This cement has the following characteristics: setting time 10 min, pH = 6.

[Long-term results of operative treatment of gastric ulcers].

Long-term results of operative treatment of 191 patients with ulcers of gastric localization were studied at terms from 1 year to 10 years. In 40 patients with malignant ulcers the recurrent cancer appeared within 5 years after resection of the stomach, during the first year--in 95%. In a group of 19 patients with malignant ulcers not diagnosed before operation recurrent cancer has also appeared in half of the patients, but during the first year in 1/3 only.