The results of surgical treatment of 64 patients with closed intestine injuries: duodenum traumas (17), small intestine traumas (39) and closed large intestine traumas (8) are presented. During operative interventions in patients with duodenum injuries after the defect suture it is obligatory to carry out the prolonged nasoduodenal intubation and decompression, wide drainage of the retroperitoneal space, abdominal cavity. In the cases of injuring more than 1 /3 of the circumference it is necessary to form duodenojejunoanastomosis or to take duodenum out of the passage. In large intestine injuries the operative intervention is carried out in two stages.
An advanced methodology of phase transition determination in aqueous solutions of thermo-sensitive polymers by using of the phase portraits method has been suggested. The methodology allows highly accurate determining the temperature when exactly a half of molecules loses solubility (from the maximum number that can go to another phase state under given conditions). It is shown that since phase transition passes usually in a wide enough temperature interval this indicator should be used as a quantitative parameter that characterizes phase transition process. Additionally the suggested methodology allows introducing one more quantitative parameter that reflects a sharpness of phase transition. The methodology is verified by an example of phase transitions study in aqueous solutions of thermo-sensitive copolymers based on N-vinylpyrrolidone and vinyl propyl ether.
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